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 is used internally by Configure to determine the
13 full pathname (if any) of the Mcc program. After Configure runs,
14 the value is reset to a plain "Mcc" and is not useful.
16 PERL_REVISION (Oldsyms.U):
17 In a Perl version number such as 5.6.2, this is the 5.
18 This value is manually set in patchlevel.h
20 PERL_SUBVERSION (Oldsyms.U):
21 In a Perl version number such as 5.6.2, this is the 2.
22 Values greater than 50 represent potentially unstable
23 development subversions.
24 This value is manually set in patchlevel.h
26 PERL_VERSION (Oldsyms.U):
27 In a Perl version number such as 5.6.2, this is the 6.
28 This value is manually set in patchlevel.h
31 This variable defines the extension used for ordinary library files.
32 For unix, it is '.a'. The '.' is included. Other possible
33 values include '.lib'.
36 This variable defines the extension used for executable files.
37 DJGPP, Cygwin and OS/2 use '.exe'. Stratus VOS uses '.pm'.
38 On operating systems which do not require a specific extension
39 for executable files, this variable is empty.
42 This variable defines the extension used for object files.
43 For unix, it is '.o'. The '.' is included. Other possible
44 values include '.obj'.
47 This variable is set to 'true' if AFS (Andrew File System) is used
48 on the system, 'false' otherwise. It is possible to override this
49 with a hint value or command line option, but you'd better know
53 This variable is by default set to '/afs'. In the unlikely case
54 this is not the correct root, it is possible to override this with
55 a hint value or command line option. This will be used in subsequent
56 tests for AFSness in the Perl configure and test process.
58 alignbytes (alignbytes.U):
59 This variable holds the number of bytes required to align a
60 double-- or a long double when applicable. Usual values are
61 2, 4 and 8. The default is eight, for safety.
63 ansi2knr (ansi2knr.U):
64 This variable is set if the user needs to run ansi2knr.
65 Currently, this is not supported, so we just abort.
67 aphostname (d_gethname.U):
68 This variable contains the command which can be used to compute the
69 host name. The command is fully qualified by its absolute path, to make
70 it safe when used by a process with super-user privileges.
72 api_revision (patchlevel.U):
73 The three variables, api_revision, api_version, and
74 api_subversion, specify the version of the oldest perl binary
75 compatible with the present perl. In a full version string
76 such as '5.6.1', api_revision is the '5'.
77 Prior to 5.5.640, the format was a floating point number,
80 perl.c:incpush() and lib/lib.pm will automatically search in
81 $sitelib/.. for older directories back to the limit specified
82 by these api_ variables. This is only useful if you have a
83 perl library directory tree structured like the default one.
84 See INSTALL for how this works. The versioned site_perl
85 directory was introduced in 5.005, so that is the lowest
86 possible value. The version list appropriate for the current
87 system is determined in inc_version_list.U.
89 XXX To do: Since compatibility can depend on compile time
90 options (such as bincompat, longlong, etc.) it should
91 (perhaps) be set by Configure, but currently it isn't.
92 Currently, we read a hard-wired value from patchlevel.h.
93 Perhaps what we ought to do is take the hard-wired value from
94 patchlevel.h but then modify it if the current Configure
95 options warrant. patchlevel.h then would use an #ifdef guard.
97 api_subversion (patchlevel.U):
98 The three variables, api_revision, api_version, and
99 api_subversion, specify the version of the oldest perl binary
100 compatible with the present perl. In a full version string
101 such as '5.6.1', api_subversion is the '1'. See api_revision for
104 api_version (patchlevel.U):
105 The three variables, api_revision, api_version, and
106 api_subversion, specify the version of the oldest perl binary
107 compatible with the present perl. In a full version string
108 such as '5.6.1', api_version is the '6'. See api_revision for
109 full details. As a special case, 5.5.0 is rendered in the
110 old-style as 5.005. (In the 5.005_0x maintenance series,
111 this was the only versioned directory in $sitelib.)
113 api_versionstring (patchlevel.U):
114 This variable combines api_revision, api_version, and
115 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
116 for use as a directory name. This is filesystem dependent.
119 This variable is used internally by Configure to determine the
120 full pathname (if any) of the ar program. After Configure runs,
121 the value is reset to a plain "ar" and is not useful.
124 This variable holds the name of the directory in which the user wants
125 to put architecture-dependent public library files for $package.
126 It is most often a local directory such as /usr/local/lib.
127 Programs using this variable must be prepared to deal
128 with filename expansion.
130 archlibexp (archlib.U):
131 This variable is the same as the archlib variable, but is
132 filename expanded at configuration time, for convenient use.
134 archname64 (use64bits.U):
135 This variable is used for the 64-bitness part of $archname.
137 archname (archname.U):
138 This variable is a short name to characterize the current
139 architecture. It is used mainly to construct the default archlib.
142 This variable defines any additional objects that must be linked
143 in with the program on this architecture. On unix, it is usually
144 empty. It is typically used to include emulations of unix calls
145 or other facilities. For perl on OS/2, for example, this would
148 asctime_r_proto (d_asctime_r.U):
149 This variable encodes the prototype of asctime_r.
150 It is zero if d_asctime_r is undef, and one of the
151 REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
155 This variable is used internally by Configure to determine the
156 full pathname (if any) of the awk program. After Configure runs,
157 the value is reset to a plain "awk" and is not useful.
160 The base revision level of this package, from the .package file.
163 This variable is defined but not used by Configure.
164 The value is a plain '' and is not useful.
167 This variable holds the name of the directory in which the user wants
168 to put publicly executable images for the package in question. It
169 is most often a local directory such as /usr/local/bin. Programs using
170 this variable must be prepared to deal with ~name substitution.
173 This is the same as the bin variable, but is filename expanded at
174 configuration time, for use in your makefiles.
177 This variable is used internally by Configure to determine the
178 full pathname (if any) of the bison program. After Configure runs,
179 the value is reset to a plain "bison" and is not useful.
182 This variable is used internally by Configure to determine the
183 full pathname (if any) of the byacc program. After Configure runs,
184 the value is reset to a plain "byacc" and is not useful.
186 byteorder (byteorder.U):
187 This variable holds the byte order in a UV. In the following,
188 larger digits indicate more significance. The variable byteorder
189 is either 4321 on a big-endian machine, or 1234 on a little-endian,
190 or 87654321 on a Cray ... or 3412 with weird order !
193 This variable contains the \c string if that is what causes the echo
194 command to suppress newline. Otherwise it is null. Correct usage is
195 $echo $n "prompt for a question: $c".
197 castflags (d_castneg.U):
198 This variable contains a flag that precise difficulties the
199 compiler has casting odd floating values to unsigned long:
201 1 = couldn't cast < 0
202 2 = couldn't cast >= 0x80000000
203 4 = couldn't cast in argument expression list
206 This variable is used internally by Configure to determine the
207 full pathname (if any) of the cat program. After Configure runs,
208 the value is reset to a plain "cat" and is not useful.
211 This variable holds the name of a command to execute a C compiler which
212 can resolve multiple global references that happen to have the same
213 name. Usual values are 'cc' and 'gcc'.
214 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
216 cccdlflags (dlsrc.U):
217 This variable contains any special flags that might need to be
218 passed with 'cc -c' to compile modules to be used to create a shared
219 library that will be used for dynamic loading. For hpux, this
220 should be +z. It is up to the makefile to use it.
223 This variable contains any special flags that might need to be
224 passed to cc to link with a shared library for dynamic loading.
225 It is up to the makefile to use it. For sunos 4.1, it should
229 This variable contains any additional C compiler flags desired by
230 the user. It is up to the Makefile to use this.
232 ccflags_uselargefiles (uselfs.U):
233 This variable contains the compiler flags needed by large file builds
234 and added to ccflags by hints files.
237 This can set either by hints files or by Configure. If using
238 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
239 Some platforms, however, make good use of this by storing the
240 flavor of the C compiler being used here. For example if using
241 the Sun WorkShop suite, ccname will be 'workshop'.
243 ccsymbols (Cppsym.U):
244 The variable contains the symbols defined by the C compiler alone.
245 The symbols defined by cpp or by cc when it calls cpp are not in
246 this list, see cppsymbols and cppccsymbols.
247 The list is a space-separated list of symbol=value tokens.
249 ccversion (Checkcc.U):
250 This can set either by hints files or by Configure. If using
251 a (non-gcc) vendor cc, this variable may contain a version for
255 Login name of the person who ran the Configure script and answered the
256 questions. This is used to tag both config.sh and config_h.SH.
258 cf_email (cf_email.U):
259 Electronic mail address of the person who ran Configure. This can be
260 used by units that require the user's e-mail, like MailList.U.
263 Holds the output of the "date" command when the configuration file was
264 produced. This is used to tag both config.sh and config_h.SH.
266 charsize (charsize.U):
267 This variable contains the value of the CHARSIZE symbol, which
268 indicates to the C program how many bytes there are in a character.
271 This variable is defined but not used by Configure.
272 The value is a plain '' and is not useful.
275 This variable is used internally by Configure to determine the
276 full pathname (if any) of the chmod program. After Configure runs,
277 the value is reset to a plain "chmod" and is not useful.
280 This variable is defined but not used by Configure.
281 The value is a plain '' and is not useful.
283 clocktype (d_times.U):
284 This variable holds the type returned by times(). It can be long,
285 or clock_t on BSD sites (in which case <sys/types.h> should be
289 This variable is used internally by Configure to determine the
290 full pathname (if any) of the comm program. After Configure runs,
291 the value is reset to a plain "comm" and is not useful.
294 This variable is defined but not used by Configure.
295 The value is a plain '' and is not useful.
297 contains (contains.U):
298 This variable holds the command to do a grep with a proper return
299 status. On most sane systems it is simply "grep". On insane systems
300 it is a grep followed by a cat followed by a test. This variable
301 is primarily for the use of other Configure units.
304 This variable is used internally by Configure to determine the
305 full pathname (if any) of the cp program. After Configure runs,
306 the value is reset to a plain "cp" and is not useful.
309 This variable is defined but not used by Configure.
310 The value is a plain '' and is not useful.
313 This variable is used internally by Configure to determine the
314 full pathname (if any) of the cpp program. After Configure runs,
315 the value is reset to a plain "cpp" and is not useful.
317 cpp_stuff (cpp_stuff.U):
318 This variable contains an identification of the catenation mechanism
319 used by the C preprocessor.
321 cppccsymbols (Cppsym.U):
322 The variable contains the symbols defined by the C compiler
323 when it calls cpp. The symbols defined by the cc alone or cpp
324 alone are not in this list, see ccsymbols and cppsymbols.
325 The list is a space-separated list of symbol=value tokens.
327 cppflags (ccflags.U):
328 This variable holds the flags that will be passed to the C pre-
329 processor. It is up to the Makefile to use it.
331 cpplast (cppstdin.U):
332 This variable has the same functionality as cppminus, only it applies
333 to cpprun and not cppstdin.
335 cppminus (cppstdin.U):
336 This variable contains the second part of the string which will invoke
337 the C preprocessor on the standard input and produce to standard
338 output. This variable will have the value "-" if cppstdin needs
339 a minus to specify standard input, otherwise the value is "".
342 This variable contains the command which will invoke a C preprocessor
343 on standard input and put the output to stdout. It is guaranteed not
344 to be a wrapper and may be a null string if no preprocessor can be
345 made directly available. This preprocessor might be different from the
346 one used by the C compiler. Don't forget to append cpplast after the
347 preprocessor options.
349 cppstdin (cppstdin.U):
350 This variable contains the command which will invoke the C
351 preprocessor on standard input and put the output to stdout.
352 It is primarily used by other Configure units that ask about
353 preprocessor symbols.
355 cppsymbols (Cppsym.U):
356 The variable contains the symbols defined by the C preprocessor
357 alone. The symbols defined by cc or by cc when it calls cpp are
358 not in this list, see ccsymbols and cppccsymbols.
359 The list is a space-separated list of symbol=value tokens.
361 crypt_r_proto (d_crypt_r.U):
362 This variable encodes the prototype of crypt_r.
363 It is zero if d_crypt_r is undef, and one of the
364 REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
367 cryptlib (d_crypt.U):
368 This variable holds -lcrypt or the path to a libcrypt.a archive if
369 the crypt() function is not defined in the standard C library. It is
370 up to the Makefile to use this.
373 This variable is used internally by Configure to determine the
374 full pathname (if any) of the csh program. After Configure runs,
375 the value is reset to a plain "csh" and is not useful.
377 ctermid_r_proto (d_ctermid_r.U):
378 This variable encodes the prototype of ctermid_r.
379 It is zero if d_ctermid_r is undef, and one of the
380 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
383 ctime_r_proto (d_ctime_r.U):
384 This variable encodes the prototype of ctime_r.
385 It is zero if d_ctime_r is undef, and one of the
386 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
389 d_Gconvert (d_gconvert.U):
390 This variable holds what Gconvert is defined as to convert
391 floating point numbers into strings. By default, Configure
392 sets this macro to use the first of gconvert, gcvt, or sprintf
393 that pass sprintf-%g-like behaviour tests. If perl is using
394 long doubles, the macro uses the first of the following
395 functions that pass Configure's tests: qgcvt, sprintf (if
396 Configure knows how to make sprintf format long doubles--see
397 sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
398 The gconvert_preference and gconvert_ld_preference variables
399 can be used to alter Configure's preferences, for doubles and
400 long doubles, respectively. If present, they contain a
401 space-separated list of one or more of the above function
402 names in the order they should be tried.
404 d_Gconvert may be set to override Configure with a platform-
405 specific function. If this function expects a double, a
406 different value may need to be set by the uselongdouble.cbu
407 call-back unit so that long doubles can be formatted without
410 d_PRIEUldbl (longdblfio.U):
411 This variable conditionally defines the PERL_PRIfldbl symbol, which
412 indiciates that stdio has a symbol to print long doubles.
413 The 'U' in the name is to separate this from d_PRIeldbl so that even
414 case-blind systems can see the difference.
416 d_PRIFUldbl (longdblfio.U):
417 This variable conditionally defines the PERL_PRIfldbl symbol, which
418 indiciates that stdio has a symbol to print long doubles.
419 The 'U' in the name is to separate this from d_PRIfldbl so that even
420 case-blind systems can see the difference.
422 d_PRIGUldbl (longdblfio.U):
423 This variable conditionally defines the PERL_PRIfldbl symbol, which
424 indiciates that stdio has a symbol to print long doubles.
425 The 'U' in the name is to separate this from d_PRIgldbl so that even
426 case-blind systems can see the difference.
428 d_PRIXU64 (quadfio.U):
429 This variable conditionally defines the PERL_PRIXU64 symbol, which
430 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
431 The 'U' in the name is to separate this from d_PRIx64 so that even
432 case-blind systems can see the difference.
434 d_PRId64 (quadfio.U):
435 This variable conditionally defines the PERL_PRId64 symbol, which
436 indiciates that stdio has a symbol to print 64-bit decimal numbers.
438 d_PRIeldbl (longdblfio.U):
439 This variable conditionally defines the PERL_PRIfldbl symbol, which
440 indiciates that stdio has a symbol to print long doubles.
442 d_PRIfldbl (longdblfio.U):
443 This variable conditionally defines the PERL_PRIfldbl symbol, which
444 indiciates that stdio has a symbol to print long doubles.
446 d_PRIgldbl (longdblfio.U):
447 This variable conditionally defines the PERL_PRIfldbl symbol, which
448 indiciates that stdio has a symbol to print long doubles.
450 d_PRIi64 (quadfio.U):
451 This variable conditionally defines the PERL_PRIi64 symbol, which
452 indiciates that stdio has a symbol to print 64-bit decimal numbers.
454 d_PRIo64 (quadfio.U):
455 This variable conditionally defines the PERL_PRIo64 symbol, which
456 indiciates that stdio has a symbol to print 64-bit octal numbers.
458 d_PRIu64 (quadfio.U):
459 This variable conditionally defines the PERL_PRIu64 symbol, which
460 indiciates that stdio has a symbol to print 64-bit unsigned decimal
463 d_PRIx64 (quadfio.U):
464 This variable conditionally defines the PERL_PRIx64 symbol, which
465 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
467 d_SCNfldbl (longdblfio.U):
468 This variable conditionally defines the PERL_PRIfldbl symbol, which
469 indiciates that stdio has a symbol to scan long doubles.
471 d__fwalk (d__fwalk.U):
472 This variable conditionally defines HAS__FWALK if _fwalk() is
473 available to apply a function to all the file handles.
475 d_access (d_access.U):
476 This variable conditionally defines HAS_ACCESS if the access() system
477 call is available to check for access permissions using real IDs.
479 d_accessx (d_accessx.U):
480 This variable conditionally defines the HAS_ACCESSX symbol, which
481 indicates to the C program that the accessx() routine is available.
484 This variable conditionally defines the HAS_ALARM symbol, which
485 indicates to the C program that the alarm() routine is available.
487 d_archlib (archlib.U):
488 This variable conditionally defines ARCHLIB to hold the pathname
489 of architecture-dependent library files for $package. If
490 $archlib is the same as $privlib, then this is set to undef.
492 d_asctime_r (d_asctime_r.U):
493 This variable conditionally defines the HAS_ASCTIME_R symbol,
494 which indicates to the C program that the asctime_r()
495 routine is available.
498 This variable conditionally defines the HAS_ATOLF symbol, which
499 indicates to the C program that the atolf() routine is available.
502 This variable conditionally defines the HAS_ATOLL symbol, which
503 indicates to the C program that the atoll() routine is available.
505 d_attribut (d_attribut.U):
506 This variable conditionally defines HASATTRIBUTE, which
507 indicates the C compiler can check for function attributes,
508 such as printf formats.
511 This variable conditionally defines the HAS_BCMP symbol if
512 the bcmp() routine is available to compare strings.
515 This variable conditionally defines the HAS_BCOPY symbol if
516 the bcopy() routine is available to copy strings.
519 This symbol conditionally defines the symbol BSD when running on a
522 d_bsdgetpgrp (d_getpgrp.U):
523 This variable conditionally defines USE_BSD_GETPGRP if
524 getpgrp needs one arguments whereas USG one needs none.
526 d_bsdsetpgrp (d_setpgrp.U):
527 This variable conditionally defines USE_BSD_SETPGRP if
528 setpgrp needs two arguments whereas USG one needs none.
529 See also d_setpgid for a POSIX interface.
532 This variable conditionally defines the HAS_BZERO symbol if
533 the bzero() routine is available to set memory to 0.
535 d_casti32 (d_casti32.U):
536 This variable conditionally defines CASTI32, which indicates
537 whether the C compiler can cast large floats to 32-bit ints.
539 d_castneg (d_castneg.U):
540 This variable conditionally defines CASTNEG, which indicates
541 wether the C compiler can cast negative float to unsigned.
543 d_charvspr (d_vprintf.U):
544 This variable conditionally defines CHARVSPRINTF if this system
545 has vsprintf returning type (char*). The trend seems to be to
546 declare it as "int vsprintf()".
549 This variable conditionally defines the HAS_CHOWN symbol, which
550 indicates to the C program that the chown() routine is available.
552 d_chroot (d_chroot.U):
553 This variable conditionally defines the HAS_CHROOT symbol, which
554 indicates to the C program that the chroot() routine is available.
556 d_chsize (d_chsize.U):
557 This variable conditionally defines the CHSIZE symbol, which
558 indicates to the C program that the chsize() routine is available
559 to truncate files. You might need a -lx to get this routine.
562 This variable conditionally defines the HAS_CLASS symbol, which
563 indicates to the C program that the class() routine is available.
565 d_closedir (d_closedir.U):
566 This variable conditionally defines HAS_CLOSEDIR if closedir() is
569 d_cmsghdr_s (d_cmsghdr_s.U):
570 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
571 which indicates that the struct cmsghdr is supported.
574 This variable conditionally defines the HASCONST symbol, which
575 indicates to the C program that this C compiler knows about the
579 This variable conditionally defines the CRYPT symbol, which
580 indicates to the C program that the crypt() routine is available
581 to encrypt passwords and the like.
583 d_crypt_r (d_crypt_r.U):
584 This variable conditionally defines the HAS_CRYPT_R symbol,
585 which indicates to the C program that the crypt_r()
586 routine is available.
589 This variable conditionally defines the CSH symbol, which
590 indicates to the C program that the C-shell exists.
592 d_ctermid_r (d_ctermid_r.U):
593 This variable conditionally defines the HAS_CTERMID_R symbol,
594 which indicates to the C program that the ctermid_r()
595 routine is available.
597 d_ctime_r (d_ctime_r.U):
598 This variable conditionally defines the HAS_CTIME_R symbol,
599 which indicates to the C program that the ctime_r()
600 routine is available.
602 d_cuserid (d_cuserid.U):
603 This variable conditionally defines the HAS_CUSERID symbol, which
604 indicates to the C program that the cuserid() routine is available
605 to get character login names.
607 d_dbl_dig (d_dbl_dig.U):
608 This variable conditionally defines d_dbl_dig if this system's
609 header files provide DBL_DIG, which is the number of significant
610 digits in a double precision number.
612 d_dbminitproto (d_dbminitproto.U):
613 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
614 which indicates to the C program that the system provides
615 a prototype for the dbminit() function. Otherwise, it is
616 up to the program to supply one.
618 d_difftime (d_difftime.U):
619 This variable conditionally defines the HAS_DIFFTIME symbol, which
620 indicates to the C program that the difftime() routine is available.
623 This variable conditionally defines the HAS_DIRFD constant,
624 which indicates to the C program that dirfd() is available
625 to return the file descriptor of a directory stream.
627 d_dirnamlen (i_dirent.U):
628 This variable conditionally defines DIRNAMLEN, which indicates
629 to the C program that the length of directory entry names is
630 provided by a d_namelen field.
632 d_dlerror (d_dlerror.U):
633 This variable conditionally defines the HAS_DLERROR symbol, which
634 indicates to the C program that the dlerror() routine is available.
636 d_dlopen (d_dlopen.U):
637 This variable conditionally defines the HAS_DLOPEN symbol, which
638 indicates to the C program that the dlopen() routine is available.
640 d_dlsymun (d_dlsymun.U):
641 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
642 indicates that we need to prepend an underscore to the symbol
643 name before calling dlsym().
645 d_dosuid (d_dosuid.U):
646 This variable conditionally defines the symbol DOSUID, which
647 tells the C program that it should insert setuid emulation code
648 on hosts which have setuid #! scripts disabled.
650 d_drand48_r (d_drand48_r.U):
651 This variable conditionally defines the HAS_DRAND48_R symbol,
652 which indicates to the C program that the drand48_r()
653 routine is available.
655 d_drand48proto (d_drand48proto.U):
656 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
657 which indicates to the C program that the system provides
658 a prototype for the drand48() function. Otherwise, it is
659 up to the program to supply one.
662 This variable conditionally defines HAS_DUP2 if dup2() is
663 available to duplicate file descriptors.
665 d_eaccess (d_eaccess.U):
666 This variable conditionally defines the HAS_EACCESS symbol, which
667 indicates to the C program that the eaccess() routine is available.
669 d_endgrent (d_endgrent.U):
670 This variable conditionally defines the HAS_ENDGRENT symbol, which
671 indicates to the C program that the endgrent() routine is available
672 for sequential access of the group database.
674 d_endgrent_r (d_endgrent_r.U):
675 This variable conditionally defines the HAS_ENDGRENT_R symbol,
676 which indicates to the C program that the endgrent_r()
677 routine is available.
679 d_endhent (d_endhent.U):
680 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
681 available to close whatever was being used for host queries.
683 d_endhostent_r (d_endhostent_r.U):
684 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
685 which indicates to the C program that the endhostent_r()
686 routine is available.
688 d_endnent (d_endnent.U):
689 This variable conditionally defines HAS_ENDNETENT if endnetent() is
690 available to close whatever was being used for network queries.
692 d_endnetent_r (d_endnetent_r.U):
693 This variable conditionally defines the HAS_ENDNETENT_R symbol,
694 which indicates to the C program that the endnetent_r()
695 routine is available.
697 d_endpent (d_endpent.U):
698 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
699 available to close whatever was being used for protocol queries.
701 d_endprotoent_r (d_endprotoent_r.U):
702 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
703 which indicates to the C program that the endprotoent_r()
704 routine is available.
706 d_endpwent (d_endpwent.U):
707 This variable conditionally defines the HAS_ENDPWENT symbol, which
708 indicates to the C program that the endpwent() routine is available
709 for sequential access of the passwd database.
711 d_endpwent_r (d_endpwent_r.U):
712 This variable conditionally defines the HAS_ENDPWENT_R symbol,
713 which indicates to the C program that the endpwent_r()
714 routine is available.
716 d_endsent (d_endsent.U):
717 This variable conditionally defines HAS_ENDSERVENT if endservent() is
718 available to close whatever was being used for service queries.
720 d_endservent_r (d_endservent_r.U):
721 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
722 which indicates to the C program that the endservent_r()
723 routine is available.
725 d_eofnblk (nblock_io.U):
726 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
727 when reading from a non-blocking I/O source.
730 This variable conditionally defines the symbols EUNICE and VAX, which
731 alerts the C program that it must deal with ideosyncracies of VMS.
733 d_fchdir (d_fchdir.U):
734 This variable conditionally defines the HAS_FCHDIR symbol, which
735 indicates to the C program that the fchdir() routine is available.
737 d_fchmod (d_fchmod.U):
738 This variable conditionally defines the HAS_FCHMOD symbol, which
739 indicates to the C program that the fchmod() routine is available
740 to change mode of opened files.
742 d_fchown (d_fchown.U):
743 This variable conditionally defines the HAS_FCHOWN symbol, which
744 indicates to the C program that the fchown() routine is available
745 to change ownership of opened files.
748 This variable conditionally defines the HAS_FCNTL symbol, and indicates
749 whether the fcntl() function exists
751 d_fcntl_can_lock (d_fcntl_can_lock.U):
752 This variable conditionally defines the FCNTL_CAN_LOCK symbol
753 and indicates whether file locking with fcntl() works.
755 d_fd_macros (d_fd_set.U):
756 This variable contains the eventual value of the HAS_FD_MACROS symbol,
757 which indicates if your C compiler knows about the macros which
758 manipulate an fd_set.
760 d_fd_set (d_fd_set.U):
761 This variable contains the eventual value of the HAS_FD_SET symbol,
762 which indicates if your C compiler knows about the fd_set typedef.
764 d_fds_bits (d_fd_set.U):
765 This variable contains the eventual value of the HAS_FDS_BITS symbol,
766 which indicates if your fd_set typedef contains the fds_bits member.
767 If you have an fd_set typedef, but the dweebs who installed it did
768 a half-fast job and neglected to provide the macros to manipulate
769 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
771 d_fgetpos (d_fgetpos.U):
772 This variable conditionally defines HAS_FGETPOS if fgetpos() is
773 available to get the file position indicator.
775 d_finite (d_finite.U):
776 This variable conditionally defines the HAS_FINITE symbol, which
777 indicates to the C program that the finite() routine is available.
779 d_finitel (d_finitel.U):
780 This variable conditionally defines the HAS_FINITEL symbol, which
781 indicates to the C program that the finitel() routine is available.
783 d_flexfnam (d_flexfnam.U):
784 This variable conditionally defines the FLEXFILENAMES symbol, which
785 indicates that the system supports filenames longer than 14 characters.
788 This variable conditionally defines HAS_FLOCK if flock() is
789 available to do file locking.
791 d_flockproto (d_flockproto.U):
792 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
793 which indicates to the C program that the system provides
794 a prototype for the flock() function. Otherwise, it is
795 up to the program to supply one.
798 This variable conditionally defines the HAS_FORK symbol, which
799 indicates to the C program that the fork() routine is available.
801 d_fp_class (d_fp_class.U):
802 This variable conditionally defines the HAS_FP_CLASS symbol, which
803 indicates to the C program that the fp_class() routine is available.
805 d_fpathconf (d_pathconf.U):
806 This variable conditionally defines the HAS_FPATHCONF symbol, which
807 indicates to the C program that the pathconf() routine is available
808 to determine file-system related limits and options associated
809 with a given open file descriptor.
811 d_fpclass (d_fpclass.U):
812 This variable conditionally defines the HAS_FPCLASS symbol, which
813 indicates to the C program that the fpclass() routine is available.
815 d_fpclassify (d_fpclassify.U):
816 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
817 indicates to the C program that the fpclassify() routine is available.
819 d_fpclassl (d_fpclassl.U):
820 This variable conditionally defines the HAS_FPCLASSL symbol, which
821 indicates to the C program that the fpclassl() routine is available.
823 d_fpos64_t (d_fpos64_t.U):
824 This symbol will be defined if the C compiler supports fpos64_t.
826 d_frexpl (d_frexpl.U):
827 This variable conditionally defines the HAS_FREXPL symbol, which
828 indicates to the C program that the frexpl() routine is available.
830 d_fs_data_s (d_fs_data_s.U):
831 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
832 which indicates that the struct fs_data is supported.
834 d_fseeko (d_fseeko.U):
835 This variable conditionally defines the HAS_FSEEKO symbol, which
836 indicates to the C program that the fseeko() routine is available.
838 d_fsetpos (d_fsetpos.U):
839 This variable conditionally defines HAS_FSETPOS if fsetpos() is
840 available to set the file position indicator.
842 d_fstatfs (d_fstatfs.U):
843 This variable conditionally defines the HAS_FSTATFS symbol, which
844 indicates to the C program that the fstatfs() routine is available.
846 d_fstatvfs (d_statvfs.U):
847 This variable conditionally defines the HAS_FSTATVFS symbol, which
848 indicates to the C program that the fstatvfs() routine is available.
851 This variable conditionally defines the HAS_FSYNC symbol, which
852 indicates to the C program that the fsync() routine is available.
854 d_ftello (d_ftello.U):
855 This variable conditionally defines the HAS_FTELLO symbol, which
856 indicates to the C program that the ftello() routine is available.
859 This variable conditionally defines the HAS_FTIME symbol, which indicates
860 that the ftime() routine exists. The ftime() routine is basically
861 a sub-second accuracy clock.
863 d_getcwd (d_getcwd.U):
864 This variable conditionally defines the HAS_GETCWD symbol, which
865 indicates to the C program that the getcwd() routine is available
866 to get the current working directory.
868 d_getespwnam (d_getespwnam.U):
869 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
870 available to retrieve enchanced (shadow) password entries by name.
872 d_getfsstat (d_getfsstat.U):
873 This variable conditionally defines the HAS_GETFSSTAT symbol, which
874 indicates to the C program that the getfsstat() routine is available.
876 d_getgrent (d_getgrent.U):
877 This variable conditionally defines the HAS_GETGRENT symbol, which
878 indicates to the C program that the getgrent() routine is available
879 for sequential access of the group database.
881 d_getgrent_r (d_getgrent_r.U):
882 This variable conditionally defines the HAS_GETGRENT_R symbol,
883 which indicates to the C program that the getgrent_r()
884 routine is available.
886 d_getgrgid_r (d_getgrgid_r.U):
887 This variable conditionally defines the HAS_GETGRGID_R symbol,
888 which indicates to the C program that the getgrgid_r()
889 routine is available.
891 d_getgrnam_r (d_getgrnam_r.U):
892 This variable conditionally defines the HAS_GETGRNAM_R symbol,
893 which indicates to the C program that the getgrnam_r()
894 routine is available.
896 d_getgrps (d_getgrps.U):
897 This variable conditionally defines the HAS_GETGROUPS symbol, which
898 indicates to the C program that the getgroups() routine is available
899 to get the list of process groups.
901 d_gethbyaddr (d_gethbyad.U):
902 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
903 indicates to the C program that the gethostbyaddr() routine is available
904 to look up hosts by their IP addresses.
906 d_gethbyname (d_gethbynm.U):
907 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
908 indicates to the C program that the gethostbyname() routine is available
909 to look up host names in some data base or other.
911 d_gethent (d_gethent.U):
912 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
913 available to look up host names in some data base or another.
915 d_gethname (d_gethname.U):
916 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
917 indicates to the C program that the gethostname() routine may be
918 used to derive the host name.
920 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
921 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
922 which indicates to the C program that the gethostbyaddr_r()
923 routine is available.
925 d_gethostbyname_r (d_gethostbyname_r.U):
926 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
927 which indicates to the C program that the gethostbyname_r()
928 routine is available.
930 d_gethostent_r (d_gethostent_r.U):
931 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
932 which indicates to the C program that the gethostent_r()
933 routine is available.
935 d_gethostprotos (d_gethostprotos.U):
936 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
937 which indicates to the C program that <netdb.h> supplies
938 prototypes for the various gethost*() functions.
939 See also netdbtype.U for probing for various netdb types.
941 d_getitimer (d_getitimer.U):
942 This variable conditionally defines the HAS_GETITIMER symbol, which
943 indicates to the C program that the getitimer() routine is available.
945 d_getlogin (d_getlogin.U):
946 This variable conditionally defines the HAS_GETLOGIN symbol, which
947 indicates to the C program that the getlogin() routine is available
948 to get the login name.
950 d_getlogin_r (d_getlogin_r.U):
951 This variable conditionally defines the HAS_GETLOGIN_R symbol,
952 which indicates to the C program that the getlogin_r()
953 routine is available.
955 d_getmnt (d_getmnt.U):
956 This variable conditionally defines the HAS_GETMNT symbol, which
957 indicates to the C program that the getmnt() routine is available
958 to retrieve one or more mount info blocks by filename.
960 d_getmntent (d_getmntent.U):
961 This variable conditionally defines the HAS_GETMNTENT symbol, which
962 indicates to the C program that the getmntent() routine is available
963 to iterate through mounted files to get their mount info.
965 d_getnbyaddr (d_getnbyad.U):
966 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
967 indicates to the C program that the getnetbyaddr() routine is available
968 to look up networks by their IP addresses.
970 d_getnbyname (d_getnbynm.U):
971 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
972 indicates to the C program that the getnetbyname() routine is available
973 to look up networks by their names.
975 d_getnent (d_getnent.U):
976 This variable conditionally defines HAS_GETNETENT if getnetent() is
977 available to look up network names in some data base or another.
979 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
980 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
981 which indicates to the C program that the getnetbyaddr_r()
982 routine is available.
984 d_getnetbyname_r (d_getnetbyname_r.U):
985 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
986 which indicates to the C program that the getnetbyname_r()
987 routine is available.
989 d_getnetent_r (d_getnetent_r.U):
990 This variable conditionally defines the HAS_GETNETENT_R symbol,
991 which indicates to the C program that the getnetent_r()
992 routine is available.
994 d_getnetprotos (d_getnetprotos.U):
995 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
996 which indicates to the C program that <netdb.h> supplies
997 prototypes for the various getnet*() functions.
998 See also netdbtype.U for probing for various netdb types.
1000 d_getpagsz (d_getpagsz.U):
1001 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1002 is available to get the system page size.
1004 d_getpbyname (d_getprotby.U):
1005 This variable conditionally defines the HAS_GETPROTOBYNAME
1006 symbol, which indicates to the C program that the
1007 getprotobyname() routine is available to look up protocols
1010 d_getpbynumber (d_getprotby.U):
1011 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1012 symbol, which indicates to the C program that the
1013 getprotobynumber() routine is available to look up protocols
1016 d_getpent (d_getpent.U):
1017 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1018 available to look up protocols in some data base or another.
1020 d_getpgid (d_getpgid.U):
1021 This variable conditionally defines the HAS_GETPGID symbol, which
1022 indicates to the C program that the getpgid(pid) function
1023 is available to get the process group id.
1025 d_getpgrp2 (d_getpgrp2.U):
1026 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1027 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1028 is available to get the current process group.
1030 d_getpgrp (d_getpgrp.U):
1031 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1032 available to get the current process group.
1034 d_getppid (d_getppid.U):
1035 This variable conditionally defines the HAS_GETPPID symbol, which
1036 indicates to the C program that the getppid() routine is available
1037 to get the parent process ID.
1039 d_getprior (d_getprior.U):
1040 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1041 is available to get a process's priority.
1043 d_getprotobyname_r (d_getprotobyname_r.U):
1044 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1045 which indicates to the C program that the getprotobyname_r()
1046 routine is available.
1048 d_getprotobynumber_r (d_getprotobynumber_r.U):
1049 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1050 which indicates to the C program that the getprotobynumber_r()
1051 routine is available.
1053 d_getprotoent_r (d_getprotoent_r.U):
1054 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1055 which indicates to the C program that the getprotoent_r()
1056 routine is available.
1058 d_getprotoprotos (d_getprotoprotos.U):
1059 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1060 which indicates to the C program that <netdb.h> supplies
1061 prototypes for the various getproto*() functions.
1062 See also netdbtype.U for probing for various netdb types.
1064 d_getprpwnam (d_getprpwnam.U):
1065 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1066 available to retrieve protected (shadow) password entries by name.
1068 d_getpwent (d_getpwent.U):
1069 This variable conditionally defines the HAS_GETPWENT symbol, which
1070 indicates to the C program that the getpwent() routine is available
1071 for sequential access of the passwd database.
1073 d_getpwent_r (d_getpwent_r.U):
1074 This variable conditionally defines the HAS_GETPWENT_R symbol,
1075 which indicates to the C program that the getpwent_r()
1076 routine is available.
1078 d_getpwnam_r (d_getpwnam_r.U):
1079 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1080 which indicates to the C program that the getpwnam_r()
1081 routine is available.
1083 d_getpwuid_r (d_getpwuid_r.U):
1084 This variable conditionally defines the HAS_GETPWUID_R symbol,
1085 which indicates to the C program that the getpwuid_r()
1086 routine is available.
1088 d_getsbyname (d_getsrvby.U):
1089 This variable conditionally defines the HAS_GETSERVBYNAME
1090 symbol, which indicates to the C program that the
1091 getservbyname() routine is available to look up services
1094 d_getsbyport (d_getsrvby.U):
1095 This variable conditionally defines the HAS_GETSERVBYPORT
1096 symbol, which indicates to the C program that the
1097 getservbyport() routine is available to look up services
1100 d_getsent (d_getsent.U):
1101 This variable conditionally defines HAS_GETSERVENT if getservent() is
1102 available to look up network services in some data base or another.
1104 d_getservbyname_r (d_getservbyname_r.U):
1105 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1106 which indicates to the C program that the getservbyname_r()
1107 routine is available.
1109 d_getservbyport_r (d_getservbyport_r.U):
1110 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1111 which indicates to the C program that the getservbyport_r()
1112 routine is available.
1114 d_getservent_r (d_getservent_r.U):
1115 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1116 which indicates to the C program that the getservent_r()
1117 routine is available.
1119 d_getservprotos (d_getservprotos.U):
1120 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1121 which indicates to the C program that <netdb.h> supplies
1122 prototypes for the various getserv*() functions.
1123 See also netdbtype.U for probing for various netdb types.
1125 d_getspnam (d_getspnam.U):
1126 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1127 available to retrieve SysV shadow password entries by name.
1129 d_getspnam_r (d_getspnam_r.U):
1130 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1131 which indicates to the C program that the getspnam_r()
1132 routine is available.
1134 d_gettimeod (d_ftime.U):
1135 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1136 indicates that the gettimeofday() system call exists (to obtain a
1137 sub-second accuracy clock). You should probably include <sys/resource.h>.
1139 d_gmtime_r (d_gmtime_r.U):
1140 This variable conditionally defines the HAS_GMTIME_R symbol,
1141 which indicates to the C program that the gmtime_r()
1142 routine is available.
1144 d_gnulibc (d_gnulibc.U):
1145 Defined if we're dealing with the GNU C Library.
1147 d_grpasswd (i_grp.U):
1148 This variable conditionally defines GRPASSWD, which indicates
1149 that struct group in <grp.h> contains gr_passwd.
1151 d_hasmntopt (d_hasmntopt.U):
1152 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1153 indicates to the C program that the hasmntopt() routine is available
1154 to query the mount options of file systems.
1156 d_htonl (d_htonl.U):
1157 This variable conditionally defines HAS_HTONL if htonl() and its
1158 friends are available to do network order byte swapping.
1160 d_index (d_strchr.U):
1161 This variable conditionally defines HAS_INDEX if index() and
1162 rindex() are available for string searching.
1164 d_inetaton (d_inetaton.U):
1165 This variable conditionally defines the HAS_INET_ATON symbol, which
1166 indicates to the C program that the inet_aton() function is available
1167 to parse IP address "dotted-quad" strings.
1169 d_int64_t (d_int64_t.U):
1170 This symbol will be defined if the C compiler supports int64_t.
1172 d_isascii (d_isascii.U):
1173 This variable conditionally defines the HAS_ISASCII constant,
1174 which indicates to the C program that isascii() is available.
1176 d_isfinite (d_isfinite.U):
1177 This variable conditionally defines the HAS_ISFINITE symbol, which
1178 indicates to the C program that the isfinite() routine is available.
1180 d_isinf (d_isinf.U):
1181 This variable conditionally defines the HAS_ISINF symbol, which
1182 indicates to the C program that the isinf() routine is available.
1184 d_isnan (d_isnan.U):
1185 This variable conditionally defines the HAS_ISNAN symbol, which
1186 indicates to the C program that the isnan() routine is available.
1188 d_isnanl (d_isnanl.U):
1189 This variable conditionally defines the HAS_ISNANL symbol, which
1190 indicates to the C program that the isnanl() routine is available.
1192 d_killpg (d_killpg.U):
1193 This variable conditionally defines the HAS_KILLPG symbol, which
1194 indicates to the C program that the killpg() routine is available
1195 to kill process groups.
1197 d_lchown (d_lchown.U):
1198 This variable conditionally defines the HAS_LCHOWN symbol, which
1199 indicates to the C program that the lchown() routine is available
1200 to operate on a symbolic link (instead of following the link).
1202 d_ldbl_dig (d_ldbl_dig.U):
1203 This variable conditionally defines d_ldbl_dig if this system's
1204 header files provide LDBL_DIG, which is the number of significant
1205 digits in a long double precision number.
1208 This variable conditionally defines HAS_LINK if link() is
1209 available to create hard links.
1211 d_localtime_r (d_localtime_r.U):
1212 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1213 which indicates to the C program that the localtime_r()
1214 routine is available.
1216 d_locconv (d_locconv.U):
1217 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1218 available for numeric and monetary formatting conventions.
1220 d_lockf (d_lockf.U):
1221 This variable conditionally defines HAS_LOCKF if lockf() is
1222 available to do file locking.
1224 d_longdbl (d_longdbl.U):
1225 This variable conditionally defines HAS_LONG_DOUBLE if
1226 the long double type is supported.
1228 d_longlong (d_longlong.U):
1229 This variable conditionally defines HAS_LONG_LONG if
1230 the long long type is supported.
1232 d_lseekproto (d_lseekproto.U):
1233 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1234 which indicates to the C program that the system provides
1235 a prototype for the lseek() function. Otherwise, it is
1236 up to the program to supply one.
1238 d_lstat (d_lstat.U):
1239 This variable conditionally defines HAS_LSTAT if lstat() is
1240 available to do file stats on symbolic links.
1242 d_madvise (d_madvise.U):
1243 This variable conditionally defines HAS_MADVISE if madvise() is
1244 available to map a file into memory.
1246 d_mblen (d_mblen.U):
1247 This variable conditionally defines the HAS_MBLEN symbol, which
1248 indicates to the C program that the mblen() routine is available
1249 to find the number of bytes in a multibye character.
1251 d_mbstowcs (d_mbstowcs.U):
1252 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1253 indicates to the C program that the mbstowcs() routine is available
1254 to convert a multibyte string into a wide character string.
1256 d_mbtowc (d_mbtowc.U):
1257 This variable conditionally defines the HAS_MBTOWC symbol, which
1258 indicates to the C program that the mbtowc() routine is available
1259 to convert multibyte to a wide character.
1261 d_memchr (d_memchr.U):
1262 This variable conditionally defines the HAS_MEMCHR symbol, which
1263 indicates to the C program that the memchr() routine is available
1264 to locate characters within a C string.
1266 d_memcmp (d_memcmp.U):
1267 This variable conditionally defines the HAS_MEMCMP symbol, which
1268 indicates to the C program that the memcmp() routine is available
1269 to compare blocks of memory.
1271 d_memcpy (d_memcpy.U):
1272 This variable conditionally defines the HAS_MEMCPY symbol, which
1273 indicates to the C program that the memcpy() routine is available
1274 to copy blocks of memory.
1276 d_memmove (d_memmove.U):
1277 This variable conditionally defines the HAS_MEMMOVE symbol, which
1278 indicates to the C program that the memmove() routine is available
1279 to copy potentatially overlapping blocks of memory.
1281 d_memset (d_memset.U):
1282 This variable conditionally defines the HAS_MEMSET symbol, which
1283 indicates to the C program that the memset() routine is available
1284 to set blocks of memory.
1286 d_mkdir (d_mkdir.U):
1287 This variable conditionally defines the HAS_MKDIR symbol, which
1288 indicates to the C program that the mkdir() routine is available
1289 to create directories..
1291 d_mkdtemp (d_mkdtemp.U):
1292 This variable conditionally defines the HAS_MKDTEMP symbol, which
1293 indicates to the C program that the mkdtemp() routine is available
1294 to exclusively create a uniquely named temporary directory.
1296 d_mkfifo (d_mkfifo.U):
1297 This variable conditionally defines the HAS_MKFIFO symbol, which
1298 indicates to the C program that the mkfifo() routine is available.
1300 d_mkstemp (d_mkstemp.U):
1301 This variable conditionally defines the HAS_MKSTEMP symbol, which
1302 indicates to the C program that the mkstemp() routine is available
1303 to exclusively create and open a uniquely named temporary file.
1305 d_mkstemps (d_mkstemps.U):
1306 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1307 indicates to the C program that the mkstemps() routine is available
1308 to exclusively create and open a uniquely named (with a suffix)
1311 d_mktime (d_mktime.U):
1312 This variable conditionally defines the HAS_MKTIME symbol, which
1313 indicates to the C program that the mktime() routine is available.
1316 This variable conditionally defines HAS_MMAP if mmap() is
1317 available to map a file into memory.
1319 d_modfl (d_modfl.U):
1320 This variable conditionally defines the HAS_MODFL symbol, which
1321 indicates to the C program that the modfl() routine is available.
1323 d_modfl_pow32_bug (d_modfl.U):
1324 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1325 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1326 For example from 4294967303.150000 one would get 4294967302.000000
1327 and 1.150000. The bug has been seen in certain versions of glibc,
1328 release 2.2.2 is known to be okay.
1330 d_modflproto (d_modfl.U):
1331 This symbol, if defined, indicates that the system provides
1332 a prototype for the modfl() function. Otherwise, it is up
1333 to the program to supply one. C99 says it should be
1334 long double modfl(long double, long double *);
1336 d_mprotect (d_mprotect.U):
1337 This variable conditionally defines HAS_MPROTECT if mprotect() is
1338 available to modify the access protection of a memory mapped file.
1341 This variable conditionally defines the HAS_MSG symbol, which
1342 indicates that the entire msg*(2) library is present.
1344 d_msg_ctrunc (d_socket.U):
1345 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1346 which indicates that the MSG_CTRUNC is available. #ifdef is
1347 not enough because it may be an enum, glibc has been known to do this.
1349 d_msg_dontroute (d_socket.U):
1350 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1351 which indicates that the MSG_DONTROUTE is available. #ifdef is
1352 not enough because it may be an enum, glibc has been known to do this.
1354 d_msg_oob (d_socket.U):
1355 This variable conditionally defines the HAS_MSG_OOB symbol,
1356 which indicates that the MSG_OOB is available. #ifdef is
1357 not enough because it may be an enum, glibc has been known to do this.
1359 d_msg_peek (d_socket.U):
1360 This variable conditionally defines the HAS_MSG_PEEK symbol,
1361 which indicates that the MSG_PEEK is available. #ifdef is
1362 not enough because it may be an enum, glibc has been known to do this.
1364 d_msg_proxy (d_socket.U):
1365 This variable conditionally defines the HAS_MSG_PROXY symbol,
1366 which indicates that the MSG_PROXY is available. #ifdef is
1367 not enough because it may be an enum, glibc has been known to do this.
1369 d_msgctl (d_msgctl.U):
1370 This variable conditionally defines the HAS_MSGCTL symbol, which
1371 indicates to the C program that the msgctl() routine is available.
1373 d_msgget (d_msgget.U):
1374 This variable conditionally defines the HAS_MSGGET symbol, which
1375 indicates to the C program that the msgget() routine is available.
1377 d_msghdr_s (d_msghdr_s.U):
1378 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1379 which indicates that the struct msghdr is supported.
1381 d_msgrcv (d_msgrcv.U):
1382 This variable conditionally defines the HAS_MSGRCV symbol, which
1383 indicates to the C program that the msgrcv() routine is available.
1385 d_msgsnd (d_msgsnd.U):
1386 This variable conditionally defines the HAS_MSGSND symbol, which
1387 indicates to the C program that the msgsnd() routine is available.
1389 d_msync (d_msync.U):
1390 This variable conditionally defines HAS_MSYNC if msync() is
1391 available to synchronize a mapped file.
1393 d_munmap (d_munmap.U):
1394 This variable conditionally defines HAS_MUNMAP if munmap() is
1395 available to unmap a region mapped by mmap().
1397 d_mymalloc (mallocsrc.U):
1398 This variable conditionally defines MYMALLOC in case other parts
1399 of the source want to take special action if MYMALLOC is used.
1400 This may include different sorts of profiling or error detection.
1402 d_nanosleep (d_nanosleep.U):
1403 This variable conditionally defines HAS_NANOSLEEP
1404 if nanosleep() is available to sleep with 1E-9 sec accuracy.
1407 This variable conditionally defines the HAS_NICE symbol, which
1408 indicates to the C program that the nice() routine is available.
1410 d_nl_langinfo (d_nl_langinfo.U):
1411 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1412 indicates to the C program that the nl_langinfo() routine is available.
1414 d_nv_preserves_uv (perlxv.U):
1415 This variable indicates whether a variable of type nvtype
1416 can preserve all the bits a variable of type uvtype.
1418 d_off64_t (d_off64_t.U):
1419 This symbol will be defined if the C compiler supports off64_t.
1421 d_old_pthread_create_joinable (d_pthrattrj.U):
1422 This variable conditionally defines pthread_create_joinable.
1423 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1425 d_oldpthreads (usethreads.U):
1426 This variable conditionally defines the OLD_PTHREADS_API symbol,
1427 and indicates that Perl should be built to use the old
1428 draft POSIX threads API. This is only potentially meaningful if
1431 d_oldsock (d_socket.U):
1432 This variable conditionally defines the OLDSOCKET symbol, which
1433 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1435 d_open3 (d_open3.U):
1436 This variable conditionally defines the HAS_OPEN3 manifest constant,
1437 which indicates to the C program that the 3 argument version of
1438 the open(2) function is available.
1440 d_pathconf (d_pathconf.U):
1441 This variable conditionally defines the HAS_PATHCONF symbol, which
1442 indicates to the C program that the pathconf() routine is available
1443 to determine file-system related limits and options associated
1444 with a given filename.
1446 d_pause (d_pause.U):
1447 This variable conditionally defines the HAS_PAUSE symbol, which
1448 indicates to the C program that the pause() routine is available
1449 to suspend a process until a signal is received.
1451 d_perl_otherlibdirs (otherlibdirs.U):
1452 This variable conditionally defines PERL_OTHERLIBDIRS, which
1453 contains a colon-separated set of paths for the perl binary to
1454 include in @INC. See also otherlibdirs.
1456 d_phostname (d_gethname.U):
1457 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1458 contains the shell command which, when fed to popen(), may be
1459 used to derive the host name.
1462 This variable conditionally defines the HAS_PIPE symbol, which
1463 indicates to the C program that the pipe() routine is available
1464 to create an inter-process channel.
1467 This variable conditionally defines the HAS_POLL symbol, which
1468 indicates to the C program that the poll() routine is available
1469 to poll active file descriptors.
1471 d_portable (d_portable.U):
1472 This variable conditionally defines the PORTABLE symbol, which
1473 indicates to the C program that it should not assume that it is
1474 running on the machine it was compiled on.
1476 d_procselfexe (d_procselfexe.U):
1477 Defined if $procselfexe is symlink to the absolute
1478 pathname of the executing program.
1480 d_pthread_atfork (d_pthread_atfork.U):
1481 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1482 which indicates to the C program that the pthread_atfork()
1483 routine is available.
1485 d_pthread_yield (d_pthread_y.U):
1486 This variable conditionally defines the HAS_PTHREAD_YIELD
1487 symbol if the pthread_yield routine is available to yield
1488 the execution of the current thread.
1491 This variable conditionally defines PWAGE, which indicates
1492 that struct passwd contains pw_age.
1494 d_pwchange (i_pwd.U):
1495 This variable conditionally defines PWCHANGE, which indicates
1496 that struct passwd contains pw_change.
1498 d_pwclass (i_pwd.U):
1499 This variable conditionally defines PWCLASS, which indicates
1500 that struct passwd contains pw_class.
1502 d_pwcomment (i_pwd.U):
1503 This variable conditionally defines PWCOMMENT, which indicates
1504 that struct passwd contains pw_comment.
1506 d_pwexpire (i_pwd.U):
1507 This variable conditionally defines PWEXPIRE, which indicates
1508 that struct passwd contains pw_expire.
1510 d_pwgecos (i_pwd.U):
1511 This variable conditionally defines PWGECOS, which indicates
1512 that struct passwd contains pw_gecos.
1514 d_pwpasswd (i_pwd.U):
1515 This variable conditionally defines PWPASSWD, which indicates
1516 that struct passwd contains pw_passwd.
1518 d_pwquota (i_pwd.U):
1519 This variable conditionally defines PWQUOTA, which indicates
1520 that struct passwd contains pw_quota.
1522 d_qgcvt (d_qgcvt.U):
1523 This variable conditionally defines the HAS_QGCVT symbol, which
1524 indicates to the C program that the qgcvt() routine is available.
1526 d_quad (quadtype.U):
1527 This variable, if defined, tells that there's a 64-bit integer type,
1530 d_random_r (d_random_r.U):
1531 This variable conditionally defines the HAS_RANDOM_R symbol,
1532 which indicates to the C program that the random_r()
1533 routine is available.
1535 d_readdir64_r (d_readdir64_r.U):
1536 This variable conditionally defines the HAS_READDIR64_R symbol,
1537 which indicates to the C program that the readdir64_r()
1538 routine is available.
1540 d_readdir (d_readdir.U):
1541 This variable conditionally defines HAS_READDIR if readdir() is
1542 available to read directory entries.
1544 d_readdir_r (d_readdir_r.U):
1545 This variable conditionally defines the HAS_READDIR_R symbol,
1546 which indicates to the C program that the readdir_r()
1547 routine is available.
1549 d_readlink (d_readlink.U):
1550 This variable conditionally defines the HAS_READLINK symbol, which
1551 indicates to the C program that the readlink() routine is available
1552 to read the value of a symbolic link.
1554 d_readv (d_readv.U):
1555 This variable conditionally defines the HAS_READV symbol, which
1556 indicates to the C program that the readv() routine is available.
1558 d_recvmsg (d_recvmsg.U):
1559 This variable conditionally defines the HAS_RECVMSG symbol, which
1560 indicates to the C program that the recvmsg() routine is available.
1562 d_rename (d_rename.U):
1563 This variable conditionally defines the HAS_RENAME symbol, which
1564 indicates to the C program that the rename() routine is available
1567 d_rewinddir (d_readdir.U):
1568 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1571 d_rmdir (d_rmdir.U):
1572 This variable conditionally defines HAS_RMDIR if rmdir() is
1573 available to remove directories.
1575 d_safebcpy (d_safebcpy.U):
1576 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1577 the bcopy() routine can do overlapping copies. Normally, you
1578 should probably use memmove().
1580 d_safemcpy (d_safemcpy.U):
1581 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1582 the memcpy() routine can do overlapping copies.
1583 For overlapping copies, memmove() should be used, if available.
1585 d_sanemcmp (d_sanemcmp.U):
1586 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1587 the memcpy() routine is available and can be used to compare relative
1588 magnitudes of chars with their high bits set.
1590 d_sbrkproto (d_sbrkproto.U):
1591 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1592 which indicates to the C program that the system provides
1593 a prototype for the sbrk() function. Otherwise, it is
1594 up to the program to supply one.
1596 d_sched_yield (d_pthread_y.U):
1597 This variable conditionally defines the HAS_SCHED_YIELD
1598 symbol if the sched_yield routine is available to yield
1599 the execution of the current thread.
1601 d_scm_rights (d_socket.U):
1602 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1603 which indicates that the SCM_RIGHTS is available. #ifdef is
1604 not enough because it may be an enum, glibc has been known to do this.
1606 d_seekdir (d_readdir.U):
1607 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1610 d_select (d_select.U):
1611 This variable conditionally defines HAS_SELECT if select() is
1612 available to select active file descriptors. A <sys/time.h>
1613 inclusion may be necessary for the timeout field.
1616 This variable conditionally defines the HAS_SEM symbol, which
1617 indicates that the entire sem*(2) library is present.
1619 d_semctl (d_semctl.U):
1620 This variable conditionally defines the HAS_SEMCTL symbol, which
1621 indicates to the C program that the semctl() routine is available.
1623 d_semctl_semid_ds (d_union_semun.U):
1624 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1625 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1627 d_semctl_semun (d_union_semun.U):
1628 This variable conditionally defines USE_SEMCTL_SEMUN, which
1629 indicates that union semun is to be used for semctl IPC_STAT.
1631 d_semget (d_semget.U):
1632 This variable conditionally defines the HAS_SEMGET symbol, which
1633 indicates to the C program that the semget() routine is available.
1635 d_semop (d_semop.U):
1636 This variable conditionally defines the HAS_SEMOP symbol, which
1637 indicates to the C program that the semop() routine is available.
1639 d_sendmsg (d_sendmsg.U):
1640 This variable conditionally defines the HAS_SENDMSG symbol, which
1641 indicates to the C program that the sendmsg() routine is available.
1643 d_setegid (d_setegid.U):
1644 This variable conditionally defines the HAS_SETEGID symbol, which
1645 indicates to the C program that the setegid() routine is available
1646 to change the effective gid of the current program.
1648 d_seteuid (d_seteuid.U):
1649 This variable conditionally defines the HAS_SETEUID symbol, which
1650 indicates to the C program that the seteuid() routine is available
1651 to change the effective uid of the current program.
1653 d_setgrent (d_setgrent.U):
1654 This variable conditionally defines the HAS_SETGRENT symbol, which
1655 indicates to the C program that the setgrent() routine is available
1656 for initializing sequential access to the group database.
1658 d_setgrent_r (d_setgrent_r.U):
1659 This variable conditionally defines the HAS_SETGRENT_R symbol,
1660 which indicates to the C program that the setgrent_r()
1661 routine is available.
1663 d_setgrps (d_setgrps.U):
1664 This variable conditionally defines the HAS_SETGROUPS symbol, which
1665 indicates to the C program that the setgroups() routine is available
1666 to set the list of process groups.
1668 d_sethent (d_sethent.U):
1669 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1672 d_sethostent_r (d_sethostent_r.U):
1673 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1674 which indicates to the C program that the sethostent_r()
1675 routine is available.
1677 d_setitimer (d_setitimer.U):
1678 This variable conditionally defines the HAS_SETITIMER symbol, which
1679 indicates to the C program that the setitimer() routine is available.
1681 d_setlinebuf (d_setlnbuf.U):
1682 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1683 indicates to the C program that the setlinebuf() routine is available
1684 to change stderr or stdout from block-buffered or unbuffered to a
1687 d_setlocale (d_setlocale.U):
1688 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1689 available to handle locale-specific ctype implementations.
1691 d_setlocale_r (d_setlocale_r.U):
1692 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1693 which indicates to the C program that the setlocale_r()
1694 routine is available.
1696 d_setnent (d_setnent.U):
1697 This variable conditionally defines HAS_SETNETENT if setnetent() is
1700 d_setnetent_r (d_setnetent_r.U):
1701 This variable conditionally defines the HAS_SETNETENT_R symbol,
1702 which indicates to the C program that the setnetent_r()
1703 routine is available.
1705 d_setpent (d_setpent.U):
1706 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1709 d_setpgid (d_setpgid.U):
1710 This variable conditionally defines the HAS_SETPGID symbol if the
1711 setpgid(pid, gpid) function is available to set process group ID.
1713 d_setpgrp2 (d_setpgrp2.U):
1714 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1715 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1716 is available to set the current process group.
1718 d_setpgrp (d_setpgrp.U):
1719 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1720 available to set the current process group.
1722 d_setprior (d_setprior.U):
1723 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1724 is available to set a process's priority.
1726 d_setproctitle (d_setproctitle.U):
1727 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1728 which indicates to the C program that the setproctitle() routine
1731 d_setprotoent_r (d_setprotoent_r.U):
1732 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1733 which indicates to the C program that the setprotoent_r()
1734 routine is available.
1736 d_setpwent (d_setpwent.U):
1737 This variable conditionally defines the HAS_SETPWENT symbol, which
1738 indicates to the C program that the setpwent() routine is available
1739 for initializing sequential access to the passwd database.
1741 d_setpwent_r (d_setpwent_r.U):
1742 This variable conditionally defines the HAS_SETPWENT_R symbol,
1743 which indicates to the C program that the setpwent_r()
1744 routine is available.
1746 d_setregid (d_setregid.U):
1747 This variable conditionally defines HAS_SETREGID if setregid() is
1748 available to change the real and effective gid of the current
1751 d_setresgid (d_setregid.U):
1752 This variable conditionally defines HAS_SETRESGID if setresgid() is
1753 available to change the real, effective and saved gid of the current
1756 d_setresuid (d_setreuid.U):
1757 This variable conditionally defines HAS_SETREUID if setresuid() is
1758 available to change the real, effective and saved uid of the current
1761 d_setreuid (d_setreuid.U):
1762 This variable conditionally defines HAS_SETREUID if setreuid() is
1763 available to change the real and effective uid of the current
1766 d_setrgid (d_setrgid.U):
1767 This variable conditionally defines the HAS_SETRGID symbol, which
1768 indicates to the C program that the setrgid() routine is available
1769 to change the real gid of the current program.
1771 d_setruid (d_setruid.U):
1772 This variable conditionally defines the HAS_SETRUID symbol, which
1773 indicates to the C program that the setruid() routine is available
1774 to change the real uid of the current program.
1776 d_setsent (d_setsent.U):
1777 This variable conditionally defines HAS_SETSERVENT if setservent() is
1780 d_setservent_r (d_setservent_r.U):
1781 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1782 which indicates to the C program that the setservent_r()
1783 routine is available.
1785 d_setsid (d_setsid.U):
1786 This variable conditionally defines HAS_SETSID if setsid() is
1787 available to set the process group ID.
1789 d_setvbuf (d_setvbuf.U):
1790 This variable conditionally defines the HAS_SETVBUF symbol, which
1791 indicates to the C program that the setvbuf() routine is available
1792 to change buffering on an open stdio stream.
1795 This variable conditionally defines the USE_SFIO symbol,
1796 and indicates whether sfio is available (and should be used).
1799 This variable conditionally defines the HAS_SHM symbol, which
1800 indicates that the entire shm*(2) library is present.
1802 d_shmat (d_shmat.U):
1803 This variable conditionally defines the HAS_SHMAT symbol, which
1804 indicates to the C program that the shmat() routine is available.
1806 d_shmatprototype (d_shmat.U):
1807 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1808 symbol, which indicates that sys/shm.h has a prototype for
1811 d_shmctl (d_shmctl.U):
1812 This variable conditionally defines the HAS_SHMCTL symbol, which
1813 indicates to the C program that the shmctl() routine is available.
1815 d_shmdt (d_shmdt.U):
1816 This variable conditionally defines the HAS_SHMDT symbol, which
1817 indicates to the C program that the shmdt() routine is available.
1819 d_shmget (d_shmget.U):
1820 This variable conditionally defines the HAS_SHMGET symbol, which
1821 indicates to the C program that the shmget() routine is available.
1823 d_sigaction (d_sigaction.U):
1824 This variable conditionally defines the HAS_SIGACTION symbol, which
1825 indicates that the Vr4 sigaction() routine is available.
1827 d_sigprocmask (d_sigprocmask.U):
1828 This variable conditionally defines HAS_SIGPROCMASK
1829 if sigprocmask() is available to examine or change the signal mask
1830 of the calling process.
1832 d_sigsetjmp (d_sigsetjmp.U):
1833 This variable conditionally defines the HAS_SIGSETJMP symbol,
1834 which indicates that the sigsetjmp() routine is available to
1835 call setjmp() and optionally save the process's signal mask.
1837 d_sockatmark (d_sockatmark.U):
1838 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1839 indicates to the C program that the sockatmark() routine is available.
1841 d_sockatmarkproto (d_sockatmarkproto.U):
1842 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1843 which indicates to the C program that the system provides
1844 a prototype for the sockatmark() function. Otherwise, it is
1845 up to the program to supply one.
1847 d_socket (d_socket.U):
1848 This variable conditionally defines HAS_SOCKET, which indicates
1849 that the BSD socket interface is supported.
1851 d_socklen_t (d_socklen_t.U):
1852 This symbol will be defined if the C compiler supports socklen_t.
1854 d_sockpair (d_socket.U):
1855 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1856 indicates that the BSD socketpair() is supported.
1858 d_socks5_init (d_socks5_init.U):
1859 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1860 indicates to the C program that the socks5_init() routine is available.
1862 d_sqrtl (d_sqrtl.U):
1863 This variable conditionally defines the HAS_SQRTL symbol, which
1864 indicates to the C program that the sqrtl() routine is available.
1866 d_srand48_r (d_srand48_r.U):
1867 This variable conditionally defines the HAS_SRAND48_R symbol,
1868 which indicates to the C program that the srand48_r()
1869 routine is available.
1871 d_srandom_r (d_srandom_r.U):
1872 This variable conditionally defines the HAS_SRANDOM_R symbol,
1873 which indicates to the C program that the srandom_r()
1874 routine is available.
1876 d_sresgproto (d_sresgproto.U):
1877 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1878 which indicates to the C program that the system provides
1879 a prototype for the setresgid() function. Otherwise, it is
1880 up to the program to supply one.
1882 d_sresuproto (d_sresuproto.U):
1883 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1884 which indicates to the C program that the system provides
1885 a prototype for the setresuid() function. Otherwise, it is
1886 up to the program to supply one.
1888 d_statblks (d_statblks.U):
1889 This variable conditionally defines USE_STAT_BLOCKS
1890 if this system has a stat structure declaring
1891 st_blksize and st_blocks.
1893 d_statfs_f_flags (d_statfs_f_flags.U):
1894 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1895 symbol, which indicates to struct statfs from has f_flags member.
1896 This kind of struct statfs is coming from sys/mount.h (BSD),
1897 not from sys/statfs.h (SYSV).
1899 d_statfs_s (d_statfs_s.U):
1900 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1901 which indicates that the struct statfs is supported.
1903 d_statvfs (d_statvfs.U):
1904 This variable conditionally defines the HAS_STATVFS symbol, which
1905 indicates to the C program that the statvfs() routine is available.
1907 d_stdio_cnt_lval (d_stdstdio.U):
1908 This variable conditionally defines STDIO_CNT_LVALUE if the
1909 FILE_cnt macro can be used as an lvalue.
1911 d_stdio_ptr_lval (d_stdstdio.U):
1912 This variable conditionally defines STDIO_PTR_LVALUE if the
1913 FILE_ptr macro can be used as an lvalue.
1915 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1916 This symbol is defined if using the FILE_ptr macro as an lvalue
1917 to increase the pointer by n leaves File_cnt(fp) unchanged.
1919 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1920 This symbol is defined if using the FILE_ptr macro as an lvalue
1921 to increase the pointer by n has the side effect of decreasing the
1922 value of File_cnt(fp) by n.
1924 d_stdio_stream_array (stdio_streams.U):
1925 This variable tells whether there is an array holding
1928 d_stdiobase (d_stdstdio.U):
1929 This variable conditionally defines USE_STDIO_BASE if this system
1930 has a FILE structure declaring a usable _base field (or equivalent)
1933 d_stdstdio (d_stdstdio.U):
1934 This variable conditionally defines USE_STDIO_PTR if this system
1935 has a FILE structure declaring usable _ptr and _cnt fields (or
1936 equivalent) in stdio.h.
1938 d_strchr (d_strchr.U):
1939 This variable conditionally defines HAS_STRCHR if strchr() and
1940 strrchr() are available for string searching.
1942 d_strcoll (d_strcoll.U):
1943 This variable conditionally defines HAS_STRCOLL if strcoll() is
1944 available to compare strings using collating information.
1946 d_strctcpy (d_strctcpy.U):
1947 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1948 indicates to the C program that this C compiler knows how to copy
1951 d_strerrm (d_strerror.U):
1952 This variable holds what Strerrr is defined as to translate an error
1953 code condition into an error message string. It could be 'strerror'
1954 or a more complex macro emulating strrror with sys_errlist[], or the
1955 "unknown" string when both strerror and sys_errlist are missing.
1957 d_strerror (d_strerror.U):
1958 This variable conditionally defines HAS_STRERROR if strerror() is
1959 available to translate error numbers to strings.
1961 d_strerror_r (d_strerror_r.U):
1962 This variable conditionally defines the HAS_STRERROR_R symbol,
1963 which indicates to the C program that the strerror_r()
1964 routine is available.
1966 d_strftime (d_strftime.U):
1967 This variable conditionally defines the HAS_STRFTIME symbol, which
1968 indicates to the C program that the strftime() routine is available.
1970 d_strtod (d_strtod.U):
1971 This variable conditionally defines the HAS_STRTOD symbol, which
1972 indicates to the C program that the strtod() routine is available
1973 to provide better numeric string conversion than atof().
1975 d_strtol (d_strtol.U):
1976 This variable conditionally defines the HAS_STRTOL symbol, which
1977 indicates to the C program that the strtol() routine is available
1978 to provide better numeric string conversion than atoi() and friends.
1980 d_strtold (d_strtold.U):
1981 This variable conditionally defines the HAS_STRTOLD symbol, which
1982 indicates to the C program that the strtold() routine is available.
1984 d_strtoll (d_strtoll.U):
1985 This variable conditionally defines the HAS_STRTOLL symbol, which
1986 indicates to the C program that the strtoll() routine is available.
1988 d_strtoq (d_strtoq.U):
1989 This variable conditionally defines the HAS_STRTOQ symbol, which
1990 indicates to the C program that the strtoq() routine is available.
1992 d_strtoul (d_strtoul.U):
1993 This variable conditionally defines the HAS_STRTOUL symbol, which
1994 indicates to the C program that the strtoul() routine is available
1995 to provide conversion of strings to unsigned long.
1997 d_strtoull (d_strtoull.U):
1998 This variable conditionally defines the HAS_STRTOULL symbol, which
1999 indicates to the C program that the strtoull() routine is available.
2001 d_strtouq (d_strtouq.U):
2002 This variable conditionally defines the HAS_STRTOUQ symbol, which
2003 indicates to the C program that the strtouq() routine is available.
2005 d_strxfrm (d_strxfrm.U):
2006 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2007 available to transform strings.
2009 d_suidsafe (d_dosuid.U):
2010 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2011 if setuid scripts can be secure. This test looks in /dev/fd/.
2013 d_symlink (d_symlink.U):
2014 This variable conditionally defines the HAS_SYMLINK symbol, which
2015 indicates to the C program that the symlink() routine is available
2016 to create symbolic links.
2018 d_syscall (d_syscall.U):
2019 This variable conditionally defines HAS_SYSCALL if syscall() is
2020 available call arbitrary system calls.
2022 d_syscallproto (d_syscallproto.U):
2023 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2024 which indicates to the C program that the system provides
2025 a prototype for the syscall() function. Otherwise, it is
2026 up to the program to supply one.
2028 d_sysconf (d_sysconf.U):
2029 This variable conditionally defines the HAS_SYSCONF symbol, which
2030 indicates to the C program that the sysconf() routine is available
2031 to determine system related limits and options.
2033 d_sysernlst (d_strerror.U):
2034 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2035 is available to translate error numbers to the symbolic name.
2037 d_syserrlst (d_strerror.U):
2038 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2039 available to translate error numbers to strings.
2041 d_system (d_system.U):
2042 This variable conditionally defines HAS_SYSTEM if system() is
2043 available to issue a shell command.
2045 d_tcgetpgrp (d_tcgtpgrp.U):
2046 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2047 indicates to the C program that the tcgetpgrp() routine is available.
2048 to get foreground process group ID.
2050 d_tcsetpgrp (d_tcstpgrp.U):
2051 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2052 indicates to the C program that the tcsetpgrp() routine is available
2053 to set foreground process group ID.
2055 d_telldir (d_readdir.U):
2056 This variable conditionally defines HAS_TELLDIR if telldir() is
2059 d_telldirproto (d_telldirproto.U):
2060 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2061 which indicates to the C program that the system provides
2062 a prototype for the telldir() function. Otherwise, it is
2063 up to the program to supply one.
2066 This variable conditionally defines the HAS_TIME symbol, which indicates
2067 that the time() routine exists. The time() routine is normaly
2068 provided on UNIX systems.
2070 d_times (d_times.U):
2071 This variable conditionally defines the HAS_TIMES symbol, which indicates
2072 that the times() routine exists. The times() routine is normaly
2073 provided on UNIX systems. You may have to include <sys/times.h>.
2075 d_tm_tm_gmtoff (i_time.U):
2076 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2077 indicates to the C program that the struct tm has the tm_gmtoff field.
2079 d_tm_tm_zone (i_time.U):
2080 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2081 indicates to the C program that the struct tm has the tm_zone field.
2083 d_tmpnam_r (d_tmpnam_r.U):
2084 This variable conditionally defines the HAS_TMPNAM_R symbol,
2085 which indicates to the C program that the tmpnam_r()
2086 routine is available.
2088 d_truncate (d_truncate.U):
2089 This variable conditionally defines HAS_TRUNCATE if truncate() is
2090 available to truncate files.
2092 d_ttyname_r (d_ttyname_r.U):
2093 This variable conditionally defines the HAS_TTYNAME_R symbol,
2094 which indicates to the C program that the ttyname_r()
2095 routine is available.
2097 d_tzname (d_tzname.U):
2098 This variable conditionally defines HAS_TZNAME if tzname[] is
2099 available to access timezone names.
2101 d_u32align (d_u32align.U):
2102 This variable tells whether you must access character data
2103 through U32-aligned pointers.
2105 d_ualarm (d_ualarm.U):
2106 This variable conditionally defines the HAS_UALARM symbol, which
2107 indicates to the C program that the ualarm() routine is available.
2109 d_umask (d_umask.U):
2110 This variable conditionally defines the HAS_UMASK symbol, which
2111 indicates to the C program that the umask() routine is available.
2112 to set and get the value of the file creation mask.
2114 d_uname (d_gethname.U):
2115 This variable conditionally defines the HAS_UNAME symbol, which
2116 indicates to the C program that the uname() routine may be
2117 used to derive the host name.
2119 d_union_semun (d_union_semun.U):
2120 This variable conditionally defines HAS_UNION_SEMUN if the
2121 union semun is defined by including <sys/sem.h>.
2123 d_unordered (d_unordered.U):
2124 This variable conditionally defines the HAS_UNORDERED symbol, which
2125 indicates to the C program that the unordered() routine is available.
2127 d_usleep (d_usleep.U):
2128 This variable conditionally defines HAS_USLEEP if usleep() is
2129 available to do high granularity sleeps.
2131 d_usleepproto (d_usleepproto.U):
2132 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2133 which indicates to the C program that the system provides
2134 a prototype for the usleep() function. Otherwise, it is
2135 up to the program to supply one.
2137 d_ustat (d_ustat.U):
2138 This variable conditionally defines HAS_USTAT if ustat() is
2139 available to query file system statistics by dev_t.
2141 d_vendorarch (vendorarch.U):
2142 This variable conditionally defined PERL_VENDORARCH.
2144 d_vendorbin (vendorbin.U):
2145 This variable conditionally defines PERL_VENDORBIN.
2147 d_vendorlib (vendorlib.U):
2148 This variable conditionally defines PERL_VENDORLIB.
2150 d_vfork (d_vfork.U):
2151 This variable conditionally defines the HAS_VFORK symbol, which
2152 indicates the vfork() routine is available.
2154 d_void_closedir (d_closedir.U):
2155 This variable conditionally defines VOID_CLOSEDIR if closedir()
2156 does not return a value.
2158 d_voidsig (d_voidsig.U):
2159 This variable conditionally defines VOIDSIG if this system
2160 declares "void (*signal(...))()" in signal.h. The old way was to
2161 declare it as "int (*signal(...))()".
2163 d_voidtty (i_sysioctl.U):
2164 This variable conditionally defines USE_IOCNOTTY to indicate that the
2165 ioctl() call with TIOCNOTTY should be used to void tty association.
2166 Otherwise (on USG probably), it is enough to close the standard file
2167 decriptors and do a setpgrp().
2169 d_volatile (d_volatile.U):
2170 This variable conditionally defines the HASVOLATILE symbol, which
2171 indicates to the C program that this C compiler knows about the
2172 volatile declaration.
2174 d_vprintf (d_vprintf.U):
2175 This variable conditionally defines the HAS_VPRINTF symbol, which
2176 indicates to the C program that the vprintf() routine is available
2177 to printf with a pointer to an argument list.
2179 d_wait4 (d_wait4.U):
2180 This variable conditionally defines the HAS_WAIT4 symbol, which
2181 indicates the wait4() routine is available.
2183 d_waitpid (d_waitpid.U):
2184 This variable conditionally defines HAS_WAITPID if waitpid() is
2185 available to wait for child process.
2187 d_wcstombs (d_wcstombs.U):
2188 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2189 indicates to the C program that the wcstombs() routine is available
2190 to convert wide character strings to multibyte strings.
2192 d_wctomb (d_wctomb.U):
2193 This variable conditionally defines the HAS_WCTOMB symbol, which
2194 indicates to the C program that the wctomb() routine is available
2195 to convert a wide character to a multibyte.
2197 d_writev (d_writev.U):
2198 This variable conditionally defines the HAS_WRITEV symbol, which
2199 indicates to the C program that the writev() routine is available.
2202 This variable conditionally defines the symbol XENIX, which alerts
2203 the C program that it runs under Xenix.
2206 This variable is used internally by Configure to determine the
2207 full pathname (if any) of the date program. After Configure runs,
2208 the value is reset to a plain "date" and is not useful.
2210 db_hashtype (i_db.U):
2211 This variable contains the type of the hash structure element
2212 in the <db.h> header file. In older versions of DB, it was
2213 int, while in newer ones it is u_int32_t.
2215 db_prefixtype (i_db.U):
2216 This variable contains the type of the prefix structure element
2217 in the <db.h> header file. In older versions of DB, it was
2218 int, while in newer ones it is size_t.
2220 db_version_major (i_db.U):
2221 This variable contains the major version number of
2222 Berkeley DB found in the <db.h> header file.
2224 db_version_minor (i_db.U):
2225 This variable contains the minor version number of
2226 Berkeley DB found in the <db.h> header file.
2227 For DB version 1 this is always 0.
2229 db_version_patch (i_db.U):
2230 This variable contains the patch version number of
2231 Berkeley DB found in the <db.h> header file.
2232 For DB version 1 this is always 0.
2234 defvoidused (voidflags.U):
2235 This variable contains the default value of the VOIDUSED symbol (15).
2237 direntrytype (i_dirent.U):
2238 This symbol is set to 'struct direct' or 'struct dirent' depending on
2239 whether dirent is available or not. You should use this pseudo type to
2240 portably declare your directory entries.
2243 This variable contains the extension that is to be used for the
2244 dynamically loaded modules that perl generaties.
2247 This variable contains the name of the dynamic loading file that
2248 will be used with the package.
2250 doublesize (doublesize.U):
2251 This variable contains the value of the DOUBLESIZE symbol, which
2252 indicates to the C program how many bytes there are in a double.
2254 drand01 (randfunc.U):
2255 Indicates the macro to be used to generate normalized
2256 random numbers. Uses randfunc, often divided by
2257 (double) (((unsigned long) 1 << randbits)) in order to
2258 normalize the result.
2259 In C programs, the macro 'Drand01' is mapped to drand01.
2261 drand48_r_proto (d_drand48_r.U):
2262 This variable encodes the prototype of drand48_r.
2263 It is zero if d_drand48_r is undef, and one of the
2264 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2267 dynamic_ext (Extensions.U):
2268 This variable holds a list of XS extension files we want to
2269 link dynamically into the package. It is used by Makefile.
2271 eagain (nblock_io.U):
2272 This variable bears the symbolic errno code set by read() when no
2273 data is present on the file and non-blocking I/O was enabled (otherwise,
2274 read() blocks naturally).
2277 This variable conditionally defines EBCDIC if this
2278 system uses EBCDIC encoding. Among other things, this
2279 means that the character ranges are not contiguous.
2283 This variable is used internally by Configure to determine the
2284 full pathname (if any) of the echo program. After Configure runs,
2285 the value is reset to a plain "echo" and is not useful.
2288 This variable is used internally by Configure to determine the
2289 full pathname (if any) of the egrep program. After Configure runs,
2290 the value is reset to a plain "egrep" and is not useful.
2293 This variable is defined but not used by Configure.
2294 The value is a plain '' and is not useful.
2296 endgrent_r_proto (d_endgrent_r.U):
2297 This variable encodes the prototype of endgrent_r.
2298 It is zero if d_endgrent_r is undef, and one of the
2299 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2302 endhostent_r_proto (d_endhostent_r.U):
2303 This variable encodes the prototype of endhostent_r.
2304 It is zero if d_endhostent_r is undef, and one of the
2305 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2308 endnetent_r_proto (d_endnetent_r.U):
2309 This variable encodes the prototype of endnetent_r.
2310 It is zero if d_endnetent_r is undef, and one of the
2311 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2314 endprotoent_r_proto (d_endprotoent_r.U):
2315 This variable encodes the prototype of endprotoent_r.
2316 It is zero if d_endprotoent_r is undef, and one of the
2317 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2320 endpwent_r_proto (d_endpwent_r.U):
2321 This variable encodes the prototype of endpwent_r.
2322 It is zero if d_endpwent_r is undef, and one of the
2323 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2326 endservent_r_proto (d_endservent_r.U):
2327 This variable encodes the prototype of endservent_r.
2328 It is zero if d_endservent_r is undef, and one of the
2329 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2333 When running under Eunice this variable contains a command which will
2334 convert a shell script to the proper form of text file for it to be
2335 executable by the shell. On other systems it is a no-op.
2338 This is an old synonym for _exe.
2341 This variable is used internally by Configure to determine the
2342 full pathname (if any) of the expr program. After Configure runs,
2343 the value is reset to a plain "expr" and is not useful.
2345 extensions (Extensions.U):
2346 This variable holds a list of all extension files (both XS and
2347 non-xs linked into the package. It is propagated to Config.pm
2348 and is typically used to test whether a particular extesion
2352 This variable holds a list of extra modules to install.
2354 fflushNULL (fflushall.U):
2355 This symbol, if defined, tells that fflush(NULL) does flush
2356 all pending stdio output.
2358 fflushall (fflushall.U):
2359 This symbol, if defined, tells that to flush
2360 all pending stdio output one must loop through all
2361 the stdio file handles stored in an array and fflush them.
2362 Note that if fflushNULL is defined, fflushall will not
2363 even be probed for and will be left undefined.
2366 This variable is defined but not used by Configure.
2367 The value is a plain '' and is not useful.
2369 firstmakefile (Unix.U):
2370 This variable defines the first file searched by make. On unix,
2371 it is makefile (then Makefile). On case-insensitive systems,
2372 it might be something else. This is only used to deal with
2373 convoluted make depend tricks.
2376 This variable is defined but not used by Configure.
2377 The value is a plain '' and is not useful.
2379 fpossize (fpossize.U):
2380 This variable contains the size of a fpostype in bytes.
2382 fpostype (fpostype.U):
2383 This variable defines Fpos_t to be something like fpos_t, long,
2384 uint, or whatever type is used to declare file positions in libc.
2386 freetype (mallocsrc.U):
2387 This variable contains the return type of free(). It is usually
2388 void, but occasionally int.
2391 This variable contains the command used by Configure
2392 to copy files from the target host. Useful and available
2393 only during Perl build.
2394 The string ':' if not cross-compiling.
2397 This variable contains the full pathname to 'ar', whether or
2398 not the user has specified 'portability'. This is only used
2402 This variable contains the full pathname to 'csh', whether or
2403 not the user has specified 'portability'. This is only used
2404 in the compiled C program, and we assume that all systems which
2405 can share this executable will have the same full pathname to
2408 full_sed (Loc_sed.U):
2409 This variable contains the full pathname to 'sed', whether or
2410 not the user has specified 'portability'. This is only used
2411 in the compiled C program, and we assume that all systems which
2412 can share this executable will have the same full pathname to
2415 gccansipedantic (gccvers.U):
2416 If GNU cc (gcc) is used, this variable will enable (if set) the
2417 -ansi and -pedantic ccflags for building core files (through
2418 cflags script). (See Porting/pumpkin.pod for full description).
2420 gccosandvers (gccvers.U):
2421 If GNU cc (gcc) is used, this variable holds the operating system
2422 and version used to compile gcc. It is set to '' if not gcc,
2423 or if nothing useful can be parsed as the os version.
2425 gccversion (gccvers.U):
2426 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2427 indicate whether the compiler is version 1 or 2. This is used in
2428 setting some of the default cflags. It is set to '' if not gcc.
2430 getgrent_r_proto (d_getgrent_r.U):
2431 This variable encodes the prototype of getgrent_r.
2432 It is zero if d_getgrent_r is undef, and one of the
2433 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2436 getgrgid_r_proto (d_getgrgid_r.U):
2437 This variable encodes the prototype of getgrgid_r.
2438 It is zero if d_getgrgid_r is undef, and one of the
2439 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2442 getgrnam_r_proto (d_getgrnam_r.U):
2443 This variable encodes the prototype of getgrnam_r.
2444 It is zero if d_getgrnam_r is undef, and one of the
2445 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2448 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2449 This variable encodes the prototype of gethostbyaddr_r.
2450 It is zero if d_gethostbyaddr_r is undef, and one of the
2451 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2454 gethostbyname_r_proto (d_gethostbyname_r.U):
2455 This variable encodes the prototype of gethostbyname_r.
2456 It is zero if d_gethostbyname_r is undef, and one of the
2457 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2460 gethostent_r_proto (d_gethostent_r.U):
2461 This variable encodes the prototype of gethostent_r.
2462 It is zero if d_gethostent_r is undef, and one of the
2463 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2466 getlogin_r_proto (d_getlogin_r.U):
2467 This variable encodes the prototype of getlogin_r.
2468 It is zero if d_getlogin_r is undef, and one of the
2469 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2472 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2473 This variable encodes the prototype of getnetbyaddr_r.
2474 It is zero if d_getnetbyaddr_r is undef, and one of the
2475 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2478 getnetbyname_r_proto (d_getnetbyname_r.U):
2479 This variable encodes the prototype of getnetbyname_r.
2480 It is zero if d_getnetbyname_r is undef, and one of the
2481 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2484 getnetent_r_proto (d_getnetent_r.U):
2485 This variable encodes the prototype of getnetent_r.
2486 It is zero if d_getnetent_r is undef, and one of the
2487 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2490 getprotobyname_r_proto (d_getprotobyname_r.U):
2491 This variable encodes the prototype of getprotobyname_r.
2492 It is zero if d_getprotobyname_r is undef, and one of the
2493 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2496 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2497 This variable encodes the prototype of getprotobynumber_r.
2498 It is zero if d_getprotobynumber_r is undef, and one of the
2499 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2502 getprotoent_r_proto (d_getprotoent_r.U):
2503 This variable encodes the prototype of getprotoent_r.
2504 It is zero if d_getprotoent_r is undef, and one of the
2505 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2508 getpwent_r_proto (d_getpwent_r.U):
2509 This variable encodes the prototype of getpwent_r.
2510 It is zero if d_getpwent_r is undef, and one of the
2511 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2514 getpwnam_r_proto (d_getpwnam_r.U):
2515 This variable encodes the prototype of getpwnam_r.
2516 It is zero if d_getpwnam_r is undef, and one of the
2517 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2520 getpwuid_r_proto (d_getpwuid_r.U):
2521 This variable encodes the prototype of getpwuid_r.
2522 It is zero if d_getpwuid_r is undef, and one of the
2523 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2526 getservbyname_r_proto (d_getservbyname_r.U):
2527 This variable encodes the prototype of getservbyname_r.
2528 It is zero if d_getservbyname_r is undef, and one of the
2529 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2532 getservbyport_r_proto (d_getservbyport_r.U):
2533 This variable encodes the prototype of getservbyport_r.
2534 It is zero if d_getservbyport_r is undef, and one of the
2535 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2538 getservent_r_proto (d_getservent_r.U):
2539 This variable encodes the prototype of getservent_r.
2540 It is zero if d_getservent_r is undef, and one of the
2541 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2544 getspnam_r_proto (d_getspnam_r.U):
2545 This variable encodes the prototype of getspnam_r.
2546 It is zero if d_getspnam_r is undef, and one of the
2547 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2551 This variable contains the format string used for printing a Gid_t.
2553 gidsign (gidsign.U):
2554 This variable contains the signedness of a gidtype.
2555 1 for unsigned, -1 for signed.
2557 gidsize (gidsize.U):
2558 This variable contains the size of a gidtype in bytes.
2560 gidtype (gidtype.U):
2561 This variable defines Gid_t to be something like gid_t, int,
2562 ushort, or whatever type is used to declare the return type
2563 of getgid(). Typically, it is the type of group ids in the kernel.
2566 This variable holds the general path (space-separated) used to
2567 find libraries. It may contain directories that do not exist on
2568 this platform, libpth is the cleaned-up version.
2571 This variable is used internally by Configure to determine the
2572 full pathname (if any) of the gmake program. After Configure runs,
2573 the value is reset to a plain "gmake" and is not useful.
2575 gmtime_r_proto (d_gmtime_r.U):
2576 This variable encodes the prototype of gmtime_r.
2577 It is zero if d_gmtime_r is undef, and one of the
2578 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2581 gnulibc_version (d_gnulibc.U):
2582 This variable contains the version number of the GNU C library.
2583 It is usually something like '2.2.5'. It is a plain '' if this
2584 is not the GNU C library, or if the version is unknown.
2587 This variable is used internally by Configure to determine the
2588 full pathname (if any) of the grep program. After Configure runs,
2589 the value is reset to a plain "grep" and is not useful.
2592 This variable contains a command that produces the text of the
2593 /etc/group file. This is normally "cat /etc/group", but can be
2594 "ypcat group" when NIS is used.
2595 On some systems, such as os390, there may be no equivalent
2596 command, in which case this variable is unset.
2598 groupstype (groupstype.U):
2599 This variable defines Groups_t to be something like gid_t, int,
2600 ushort, or whatever type is used for the second argument to
2601 getgroups() and setgroups(). Usually, this is the same as
2602 gidtype (gid_t), but sometimes it isn't.
2605 This variable is used internally by Configure to determine the
2606 full pathname (if any) of the gzip program. After Configure runs,
2607 the value is reset to a plain "gzip" and is not useful.
2609 h_fcntl (h_fcntl.U):
2610 This is variable gets set in various places to tell i_fcntl that
2611 <fcntl.h> should be included.
2613 h_sysfile (h_sysfile.U):
2614 This is variable gets set in various places to tell i_sys_file that
2615 <sys/file.h> should be included.
2618 Gives the type of hints used for previous answers. May be one of
2619 "default", "recommended" or "previous".
2622 This variable contains a command that produces the text of the
2623 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2624 "ypcat hosts" when NIS is used.
2625 On some systems, such as os390, there may be no equivalent
2626 command, in which case this variable is unset.
2629 This variable is the size of an I16 in bytes.
2632 This variable contains the C type used for Perl's I16.
2635 This variable is the size of an I32 in bytes.
2638 This variable contains the C type used for Perl's I32.
2641 This variable is the size of an I64 in bytes.
2644 This variable contains the C type used for Perl's I64.
2647 This variable is the size of an I8 in bytes.
2650 This variable contains the C type used for Perl's I8.
2652 i_arpainet (i_arpainet.U):
2653 This variable conditionally defines the I_ARPA_INET symbol,
2654 and indicates whether a C program should include <arpa/inet.h>.
2656 i_bsdioctl (i_sysioctl.U):
2657 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2658 indicates to the C program that <sys/bsdioctl.h> exists and should
2661 i_crypt (i_crypt.U):
2662 This variable conditionally defines the I_CRYPT symbol, and indicates
2663 whether a C program should include <crypt.h>.
2666 This variable conditionally defines the I_DB symbol, and indicates
2667 whether a C program may include Berkeley's DB include file <db.h>.
2670 This variable conditionally defines the I_DBM symbol, which
2671 indicates to the C program that <dbm.h> exists and should
2674 i_dirent (i_dirent.U):
2675 This variable conditionally defines I_DIRENT, which indicates
2676 to the C program that it should include <dirent.h>.
2679 This variable conditionally defines the I_DLD symbol, which
2680 indicates to the C program that <dld.h> (GNU dynamic loading)
2681 exists and should be included.
2683 i_dlfcn (i_dlfcn.U):
2684 This variable conditionally defines the I_DLFCN symbol, which
2685 indicates to the C program that <dlfcn.h> exists and should
2688 i_fcntl (i_fcntl.U):
2689 This variable controls the value of I_FCNTL (which tells
2690 the C program to include <fcntl.h>).
2692 i_float (i_float.U):
2693 This variable conditionally defines the I_FLOAT symbol, and indicates
2694 whether a C program may include <float.h> to get symbols like DBL_MAX
2695 or DBL_MIN, i.e. machine dependent floating point values.
2698 This variable conditionally defines the I_FP symbol, and indicates
2699 whether a C program should include <fp.h>.
2701 i_fp_class (i_fp_class.U):
2702 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2703 whether a C program should include <fp_class.h>.
2706 This variable conditionally defines the I_GDBM symbol, which
2707 indicates to the C program that <gdbm.h> exists and should
2711 This variable conditionally defines the I_GRP symbol, and indicates
2712 whether a C program should include <grp.h>.
2714 i_ieeefp (i_ieeefp.U):
2715 This variable conditionally defines the I_IEEEFP symbol, and indicates
2716 whether a C program should include <ieeefp.h>.
2718 i_inttypes (i_inttypes.U):
2719 This variable conditionally defines the I_INTTYPES symbol,
2720 and indicates whether a C program should include <inttypes.h>.
2722 i_langinfo (i_langinfo.U):
2723 This variable conditionally defines the I_LANGINFO symbol,
2724 and indicates whether a C program should include <langinfo.h>.
2726 i_libutil (i_libutil.U):
2727 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2728 whether a C program should include <libutil.h>.
2730 i_limits (i_limits.U):
2731 This variable conditionally defines the I_LIMITS symbol, and indicates
2732 whether a C program may include <limits.h> to get symbols like WORD_BIT
2735 i_locale (i_locale.U):
2736 This variable conditionally defines the I_LOCALE symbol,
2737 and indicates whether a C program should include <locale.h>.
2739 i_machcthr (i_machcthr.U):
2740 This variable conditionally defines the I_MACH_CTHREADS symbol,
2741 and indicates whether a C program should include <mach/cthreads.h>.
2743 i_malloc (i_malloc.U):
2744 This variable conditionally defines the I_MALLOC symbol, and indicates
2745 whether a C program should include <malloc.h>.
2748 This variable conditionally defines the I_MATH symbol, and indicates
2749 whether a C program may include <math.h>.
2751 i_memory (i_memory.U):
2752 This variable conditionally defines the I_MEMORY symbol, and indicates
2753 whether a C program should include <memory.h>.
2755 i_mntent (i_mntent.U):
2756 This variable conditionally defines the I_MNTENT symbol, and indicates
2757 whether a C program should include <mntent.h>.
2760 This variable conditionally defines the I_NDBM symbol, which
2761 indicates to the C program that <ndbm.h> exists and should
2764 i_netdb (i_netdb.U):
2765 This variable conditionally defines the I_NETDB symbol, and indicates
2766 whether a C program should include <netdb.h>.
2768 i_neterrno (i_neterrno.U):
2769 This variable conditionally defines the I_NET_ERRNO symbol, which
2770 indicates to the C program that <net/errno.h> exists and should
2773 i_netinettcp (i_netinettcp.U):
2774 This variable conditionally defines the I_NETINET_TCP symbol,
2775 and indicates whether a C program should include <netinet/tcp.h>.
2778 This variable conditionally defines I_NETINET_IN, which indicates
2779 to the C program that it should include <netinet/in.h>. Otherwise,
2780 you may try <sys/in.h>.
2783 This variable conditionally defines the I_POLL symbol, and indicates
2784 whether a C program should include <poll.h>.
2787 This variable conditionally defines the I_PROT symbol, and indicates
2788 whether a C program should include <prot.h>.
2790 i_pthread (i_pthread.U):
2791 This variable conditionally defines the I_PTHREAD symbol,
2792 and indicates whether a C program should include <pthread.h>.
2795 This variable conditionally defines I_PWD, which indicates
2796 to the C program that it should include <pwd.h>.
2798 i_rpcsvcdbm (i_dbm.U):
2799 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2800 indicates to the C program that <rpcsvc/dbm.h> exists and should
2801 be included. Some System V systems might need this instead of <dbm.h>.
2804 This variable conditionally defines the I_SFIO symbol,
2805 and indicates whether a C program should include <sfio.h>.
2807 i_sgtty (i_termio.U):
2808 This variable conditionally defines the I_SGTTY symbol, which
2809 indicates to the C program that it should include <sgtty.h> rather
2812 i_shadow (i_shadow.U):
2813 This variable conditionally defines the I_SHADOW symbol, and indicates
2814 whether a C program should include <shadow.h>.
2816 i_socks (i_socks.U):
2817 This variable conditionally defines the I_SOCKS symbol, and indicates
2818 whether a C program should include <socks.h>.
2820 i_stdarg (i_varhdr.U):
2821 This variable conditionally defines the I_STDARG symbol, which
2822 indicates to the C program that <stdarg.h> exists and should
2825 i_stddef (i_stddef.U):
2826 This variable conditionally defines the I_STDDEF symbol, which
2827 indicates to the C program that <stddef.h> exists and should
2830 i_stdlib (i_stdlib.U):
2831 This variable conditionally defines the I_STDLIB symbol, which
2832 indicates to the C program that <stdlib.h> exists and should
2835 i_string (i_string.U):
2836 This variable conditionally defines the I_STRING symbol, which
2837 indicates that <string.h> should be included rather than <strings.h>.
2839 i_sunmath (i_sunmath.U):
2840 This variable conditionally defines the I_SUNMATH symbol, and indicates
2841 whether a C program should include <sunmath.h>.
2843 i_sysaccess (i_sysaccess.U):
2844 This variable conditionally defines the I_SYS_ACCESS symbol,
2845 and indicates whether a C program should include <sys/access.h>.
2847 i_sysdir (i_sysdir.U):
2848 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2849 whether a C program should include <sys/dir.h>.
2851 i_sysfile (i_sysfile.U):
2852 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2853 whether a C program should include <sys/file.h> to get R_OK and friends.
2855 i_sysfilio (i_sysioctl.U):
2856 This variable conditionally defines the I_SYS_FILIO symbol, which
2857 indicates to the C program that <sys/filio.h> exists and should
2858 be included in preference to <sys/ioctl.h>.
2861 This variable conditionally defines I_SYS_IN, which indicates
2862 to the C program that it should include <sys/in.h> instead of
2865 i_sysioctl (i_sysioctl.U):
2866 This variable conditionally defines the I_SYS_IOCTL symbol, which
2867 indicates to the C program that <sys/ioctl.h> exists and should
2870 i_syslog (i_syslog.U):
2871 This variable conditionally defines the I_SYSLOG symbol,
2872 and indicates whether a C program should include <syslog.h>.
2874 i_sysmman (i_sysmman.U):
2875 This variable conditionally defines the I_SYS_MMAN symbol, and
2876 indicates whether a C program should include <sys/mman.h>.
2878 i_sysmode (i_sysmode.U):
2879 This variable conditionally defines the I_SYSMODE symbol,
2880 and indicates whether a C program should include <sys/mode.h>.
2882 i_sysmount (i_sysmount.U):
2883 This variable conditionally defines the I_SYSMOUNT symbol,
2884 and indicates whether a C program should include <sys/mount.h>.
2886 i_sysndir (i_sysndir.U):
2887 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2888 whether a C program should include <sys/ndir.h>.
2890 i_sysparam (i_sysparam.U):
2891 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2892 whether a C program should include <sys/param.h>.
2894 i_sysresrc (i_sysresrc.U):
2895 This variable conditionally defines the I_SYS_RESOURCE symbol,
2896 and indicates whether a C program should include <sys/resource.h>.
2898 i_syssecrt (i_syssecrt.U):
2899 This variable conditionally defines the I_SYS_SECURITY symbol,
2900 and indicates whether a C program should include <sys/security.h>.
2902 i_sysselct (i_sysselct.U):
2903 This variable conditionally defines I_SYS_SELECT, which indicates
2904 to the C program that it should include <sys/select.h> in order to
2905 get the definition of struct timeval.
2907 i_syssockio (i_sysioctl.U):
2908 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2909 C program that socket ioctl codes may be found in <sys/sockio.h>
2910 instead of <sys/ioctl.h>.
2912 i_sysstat (i_sysstat.U):
2913 This variable conditionally defines the I_SYS_STAT symbol,
2914 and indicates whether a C program should include <sys/stat.h>.
2916 i_sysstatfs (i_sysstatfs.U):
2917 This variable conditionally defines the I_SYSSTATFS symbol,
2918 and indicates whether a C program should include <sys/statfs.h>.
2920 i_sysstatvfs (i_sysstatvfs.U):
2921 This variable conditionally defines the I_SYSSTATVFS symbol,
2922 and indicates whether a C program should include <sys/statvfs.h>.
2924 i_systime (i_time.U):
2925 This variable conditionally defines I_SYS_TIME, which indicates
2926 to the C program that it should include <sys/time.h>.
2928 i_systimek (i_time.U):
2929 This variable conditionally defines I_SYS_TIME_KERNEL, which
2930 indicates to the C program that it should include <sys/time.h>
2931 with KERNEL defined.
2933 i_systimes (i_systimes.U):
2934 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2935 whether a C program should include <sys/times.h>.
2937 i_systypes (i_systypes.U):
2938 This variable conditionally defines the I_SYS_TYPES symbol,
2939 and indicates whether a C program should include <sys/types.h>.
2941 i_sysuio (i_sysuio.U):
2942 This variable conditionally defines the I_SYSUIO symbol, and indicates
2943 whether a C program should include <sys/uio.h>.
2945 i_sysun (i_sysun.U):
2946 This variable conditionally defines I_SYS_UN, which indicates
2947 to the C program that it should include <sys/un.h> to get UNIX
2948 domain socket definitions.
2950 i_sysutsname (i_sysutsname.U):
2951 This variable conditionally defines the I_SYSUTSNAME symbol,
2952 and indicates whether a C program should include <sys/utsname.h>.
2954 i_sysvfs (i_sysvfs.U):
2955 This variable conditionally defines the I_SYSVFS symbol,
2956 and indicates whether a C program should include <sys/vfs.h>.
2958 i_syswait (i_syswait.U):
2959 This variable conditionally defines I_SYS_WAIT, which indicates
2960 to the C program that it should include <sys/wait.h>.
2962 i_termio (i_termio.U):
2963 This variable conditionally defines the I_TERMIO symbol, which
2964 indicates to the C program that it should include <termio.h> rather
2967 i_termios (i_termio.U):
2968 This variable conditionally defines the I_TERMIOS symbol, which
2969 indicates to the C program that the POSIX <termios.h> file is
2973 This variable conditionally defines I_TIME, which indicates
2974 to the C program that it should include <time.h>.
2976 i_unistd (i_unistd.U):
2977 This variable conditionally defines the I_UNISTD symbol, and indicates
2978 whether a C program should include <unistd.h>.
2980 i_ustat (i_ustat.U):
2981 This variable conditionally defines the I_USTAT symbol, and indicates
2982 whether a C program should include <ustat.h>.
2984 i_utime (i_utime.U):
2985 This variable conditionally defines the I_UTIME symbol, and indicates
2986 whether a C program should include <utime.h>.
2988 i_values (i_values.U):
2989 This variable conditionally defines the I_VALUES symbol, and indicates
2990 whether a C program may include <values.h> to get symbols like MAXLONG
2993 i_varargs (i_varhdr.U):
2994 This variable conditionally defines I_VARARGS, which indicates
2995 to the C program that it should include <varargs.h>.
2997 i_varhdr (i_varhdr.U):
2998 Contains the name of the header to be included to get va_dcl definition.
2999 Typically one of varargs.h or stdarg.h.
3001 i_vfork (i_vfork.U):
3002 This variable conditionally defines the I_VFORK symbol, and indicates
3003 whether a C program should include vfork.h.
3005 ignore_versioned_solibs (libs.U):
3006 This variable should be non-empty if non-versioned shared
3007 libraries (libfoo.so.x.y) are to be ignored (because they
3008 cannot be linked against).
3010 inc_version_list (inc_version_list.U):
3011 This variable specifies the list of subdirectories in over
3012 which perl.c:incpush() and lib/lib.pm will automatically
3013 search when adding directories to @INC. The elements in
3014 the list are separated by spaces. This is only useful
3015 if you have a perl library directory tree structured like the
3016 default one. See INSTALL for how this works. The versioned
3017 site_perl directory was introduced in 5.005, so that is the
3018 lowest possible value.
3020 inc_version_list_init (inc_version_list.U):
3021 This variable holds the same list as inc_version_list, but
3022 each item is enclosed in double quotes and separated by commas,
3023 suitable for use in the PERL_INC_VERSION_LIST initialization.
3026 This variable must preceed the normal include path to get hte
3027 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3028 Value can be "" or "/bsd43" on mips.
3031 This variable is defined but not used by Configure.
3032 The value is a plain '' and is not useful.
3034 installarchlib (archlib.U):
3035 This variable is really the same as archlibexp but may differ on
3036 those systems using AFS. For extra portability, only this variable
3037 should be used in makefiles.
3040 This variable is the same as binexp unless AFS is running in which case
3041 the user is explicitely prompted for it. This variable should always
3042 be used in your makefiles for maximum portability.
3044 installman1dir (man1dir.U):
3045 This variable is really the same as man1direxp, unless you are using
3046 AFS in which case it points to the read/write location whereas
3047 man1direxp only points to the read-only access location. For extra
3048 portability, you should only use this variable within your makefiles.
3050 installman3dir (man3dir.U):
3051 This variable is really the same as man3direxp, unless you are using
3052 AFS in which case it points to the read/write location whereas
3053 man3direxp only points to the read-only access location. For extra
3054 portability, you should only use this variable within your makefiles.
3056 installprefix (installprefix.U):
3057 This variable holds the name of the directory below which
3058 "make install" will install the package. For most users, this
3059 is the same as prefix. However, it is useful for
3060 installing the software into a different (usually temporary)
3061 location after which it can be bundled up and moved somehow
3062 to the final location specified by prefix.
3064 installprefixexp (installprefix.U):
3065 This variable holds the full absolute path of installprefix
3066 with all ~-expansion done.
3068 installprivlib (privlib.U):
3069 This variable is really the same as privlibexp but may differ on
3070 those systems using AFS. For extra portability, only this variable
3071 should be used in makefiles.
3073 installscript (scriptdir.U):
3074 This variable is usually the same as scriptdirexp, unless you are on
3075 a system running AFS, in which case they may differ slightly. You
3076 should always use this variable within your makefiles for portability.
3078 installsitearch (sitearch.U):
3079 This variable is really the same as sitearchexp but may differ on
3080 those systems using AFS. For extra portability, only this variable
3081 should be used in makefiles.
3083 installsitebin (sitebin.U):
3084 This variable is usually the same as sitebinexp, unless you are on
3085 a system running AFS, in which case they may differ slightly. You
3086 should always use this variable within your makefiles for portability.
3088 installsitelib (sitelib.U):
3089 This variable is really the same as sitelibexp but may differ on
3090 those systems using AFS. For extra portability, only this variable
3091 should be used in makefiles.
3093 installstyle (installstyle.U):
3094 This variable describes the "style" of the perl installation.
3095 This is intended to be useful for tools that need to
3096 manipulate entire perl distributions. Perl itself doesn't use
3097 this to find its libraries -- the library directories are
3098 stored directly in Config.pm. Currently, there are only two
3099 styles: "lib" and "lib/perl5". The default library locations
3100 (e.g. privlib, sitelib) are either $prefix/lib or
3101 $prefix/lib/perl5. The former is useful if $prefix is a
3102 directory dedicated to perl (e.g. /opt/perl), while the latter
3103 is useful if $prefix is shared by many packages, e.g. if
3106 Unfortunately, while this "style" variable is used to set
3107 defaults for all three directory hierarchies (core, vendor, and
3108 site), there is no guarantee that the same style is actually
3109 appropriate for all those directories. For example, $prefix
3110 might be /opt/perl, but $siteprefix might be /usr/local.
3111 (Perhaps, in retrospect, the "lib" style should never have been
3112 supported, but it did seem like a nice idea at the time.)
3114 The situation is even less clear for tools such as MakeMaker
3115 that can be used to install additional modules into
3116 non-standard places. For example, if a user intends to install
3117 a module into a private directory (perhaps by setting PREFIX on
3118 the Makefile.PL command line), then there is no reason to
3119 assume that the Configure-time $installstyle setting will be
3120 relevant for that PREFIX.
3122 This may later be extended to include other information, so
3123 be careful with pattern-matching on the results.
3125 For compatibility with perl5.005 and earlier, the default
3126 setting is based on whether or not $prefix contains the string
3129 installusrbinperl (instubperl.U):
3130 This variable tells whether Perl should be installed also as
3131 /usr/bin/perl in addition to
3134 installvendorarch (vendorarch.U):
3135 This variable is really the same as vendorarchexp but may differ on
3136 those systems using AFS. For extra portability, only this variable
3137 should be used in makefiles.
3139 installvendorbin (vendorbin.U):
3140 This variable is really the same as vendorbinexp but may differ on
3141 those systems using AFS. For extra portability, only this variable
3142 should be used in makefiles.
3144 installvendorlib (vendorlib.U):
3145 This variable is really the same as vendorlibexp but may differ on
3146 those systems using AFS. For extra portability, only this variable
3147 should be used in makefiles.
3149 intsize (intsize.U):
3150 This variable contains the value of the INTSIZE symbol, which
3151 indicates to the C program how many bytes there are in an int.
3153 issymlink (issymlink.U):
3154 This variable holds the test command to test for a symbolic link
3155 (if they are supported). Typical values include 'test -h' and
3158 ivdformat (perlxvf.U):
3159 This variable contains the format string used for printing
3160 a Perl IV as a signed decimal integer.
3163 This variable is the size of an IV in bytes.
3166 This variable contains the C type used for Perl's IV.
3168 known_extensions (Extensions.U):
3169 This variable holds a list of all XS extensions included in
3173 This variable is defined but not used by Configure.
3174 The value is a plain '' and is not useful.
3177 This variable indicates the program to be used to link
3178 libraries for dynamic loading. On some systems, it is 'ld'.
3179 On ELF systems, it should be $cc. Mostly, we'll try to respect
3180 the hint file setting.
3182 lddlflags (dlsrc.U):
3183 This variable contains any special flags that might need to be
3184 passed to $ld to create a shared library suitable for dynamic
3185 loading. It is up to the makefile to use it. For hpux, it
3186 should be '-b'. For sunos 4.1, it is empty.
3188 ldflags (ccflags.U):
3189 This variable contains any additional C loader flags desired by
3190 the user. It is up to the Makefile to use this.
3192 ldflags_uselargefiles (uselfs.U):
3193 This variable contains the loader flags needed by large file builds
3194 and added to ldflags by hints files.
3196 ldlibpthname (libperl.U):
3197 This variable holds the name of the shared library
3198 search path, often LD_LIBRARY_PATH. To get an empty
3199 string, the hints file must set this to 'none'.
3202 This variable is used internally by Configure to determine the
3203 full pathname (if any) of the less program. After Configure runs,
3204 the value is reset to a plain "less" and is not useful.
3207 This is an old synonym for _a.
3210 This variable contains the location of the C library.
3212 libperl (libperl.U):
3213 The perl executable is obtained by linking perlmain.c with
3214 libperl, any static extensions (usually just DynaLoader),
3215 and any other libraries needed on this system. libperl
3216 is usually libperl.a, but can also be libperl.so.xxx if
3217 the user wishes to build a perl executable with a shared
3221 This variable holds the general path (space-separated) used to find
3222 libraries. It is intended to be used by other units.
3225 This variable holds the additional libraries we want to use.
3226 It is up to the Makefile to deal with it. The list can be empty.
3229 This variable holds the directory names aka dirnames of the libraries
3230 we found and accepted, duplicates are removed.
3233 This variable holds the filenames aka basenames of the libraries
3234 we found and accepted.
3237 This variable holds the full pathnames of the libraries
3238 we found and accepted.
3241 This variable holds the directory names probed for libraries.
3243 libswanted (Myinit.U):
3244 This variable holds a list of all the libraries we want to
3245 search. The order is chosen to pick up the c library
3246 ahead of ucb or bsd libraries for SVR4.
3248 libswanted_uselargefiles (uselfs.U):
3249 This variable contains the libraries needed by large file builds
3250 and added to ldflags by hints files. It is a space separated list
3251 of the library names without the "lib" prefix or any suffix, just
3255 This variable is defined but not used by Configure.
3256 The value is a plain '' and is not useful.
3259 This variable is defined but not used by Configure.
3260 The value is a plain '' and is not useful.
3262 lkflags (ccflags.U):
3263 This variable contains any additional C partial linker flags desired by
3264 the user. It is up to the Makefile to use this.
3267 This variable is used internally by Configure to determine the
3268 full pathname (if any) of the ln program. After Configure runs,
3269 the value is reset to a plain "ln" and is not useful.
3272 This variable holds the name of the command to make
3273 symbolic links (if they are supported). It can be used
3274 in the Makefile. It is either 'ln -s' or 'ln'
3276 localtime_r_proto (d_localtime_r.U):
3277 This variable encodes the prototype of localtime_r.
3278 It is zero if d_localtime_r is undef, and one of the
3279 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3282 locincpth (ccflags.U):
3283 This variable contains a list of additional directories to be
3284 searched by the compiler. The appropriate '-I' directives will
3285 be added to ccflags. This is intended to simplify setting
3286 local directories from the Configure command line.
3287 It's not much, but it parallels the loclibpth stuff in libpth.U.
3289 loclibpth (libpth.U):
3290 This variable holds the paths (space-separated) used to find local
3291 libraries. It is prepended to libpth, and is intended to be easily
3292 set from the command line.
3294 longdblsize (d_longdbl.U):
3295 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3296 indicates to the C program how many bytes there are in a long double,
3297 if this system supports long doubles.
3299 longlongsize (d_longlong.U):
3300 This variable contains the value of the LONGLONGSIZE symbol, which
3301 indicates to the C program how many bytes there are in a long long,
3302 if this system supports long long.
3304 longsize (intsize.U):
3305 This variable contains the value of the LONGSIZE symbol, which
3306 indicates to the C program how many bytes there are in a long.
3309 This variable is defined but not used by Configure.
3310 The value is a plain '' and is not useful.
3313 This variable is defined but not used by Configure.
3314 The value is a plain '' and is not useful.
3317 This variable is used internally by Configure to determine the
3318 full pathname (if any) of the ls program. After Configure runs,
3319 the value is reset to a plain "ls" and is not useful.
3321 lseeksize (lseektype.U):
3322 This variable defines lseektype to be something like off_t, long,
3323 or whatever type is used to declare lseek offset's type in the
3324 kernel (which also appears to be lseek's return type).
3326 lseektype (lseektype.U):
3327 This variable defines lseektype to be something like off_t, long,
3328 or whatever type is used to declare lseek offset's type in the
3329 kernel (which also appears to be lseek's return type).
3332 This variable is defined but not used by Configure.
3333 The value is a plain '' and is not useful.
3336 This variable is defined but not used by Configure.
3337 The value is a plain '' and is not useful.
3340 This variable is used internally by Configure to determine the
3341 full pathname (if any) of the make program. After Configure runs,
3342 the value is reset to a plain "make" and is not useful.
3344 make_set_make (make.U):
3345 Some versions of 'make' set the variable MAKE. Others do not.
3346 This variable contains the string to be included in Makefile.SH
3347 so that MAKE is set if needed, and not if not needed.
3348 Possible values are:
3350 make_set_make='#' # If your make program handles this for you,
3352 make_set_make="MAKE=$make" # if it doesn't.
3354 This uses a comment character to distinguish a
3355 'set' value (from a previous config.sh or Configure '-D' option)
3356 from an uncomputed value.
3358 mallocobj (mallocsrc.U):
3359 This variable contains the name of the malloc.o that this package
3360 generates, if that malloc.o is preferred over the system malloc.
3361 Otherwise the value is null. This variable is intended for generating
3362 Makefiles. See mallocsrc.
3364 mallocsrc (mallocsrc.U):
3365 This variable contains the name of the malloc.c that comes with
3366 the package, if that malloc.c is preferred over the system malloc.
3367 Otherwise the value is null. This variable is intended for generating
3370 malloctype (mallocsrc.U):
3371 This variable contains the kind of ptr returned by malloc and realloc.
3373 man1dir (man1dir.U):
3374 This variable contains the name of the directory in which manual
3375 source pages are to be put. It is the responsibility of the
3376 Makefile.SH to get the value of this into the proper command.
3377 You must be prepared to do the ~name expansion yourself.
3379 man1direxp (man1dir.U):
3380 This variable is the same as the man1dir variable, but is filename
3381 expanded at configuration time, for convenient use in makefiles.
3383 man1ext (man1dir.U):
3384 This variable contains the extension that the manual page should
3385 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3388 man3dir (man3dir.U):
3389 This variable contains the name of the directory in which manual
3390 source pages are to be put. It is the responsibility of the
3391 Makefile.SH to get the value of this into the proper command.
3392 You must be prepared to do the ~name expansion yourself.
3394 man3direxp (man3dir.U):
3395 This variable is the same as the man3dir variable, but is filename
3396 expanded at configuration time, for convenient use in makefiles.
3398 man3ext (man3dir.U):
3399 This variable contains the extension that the manual page should
3400 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3403 mips_type (usrinc.U):
3404 This variable holds the environment type for the mips system.
3405 Possible values are "BSD 4.3" and "System V".
3408 This variable is used internally by Configure to determine the
3409 full pathname (if any) of the mkdir program. After Configure runs,
3410 the value is reset to a plain "mkdir" and is not useful.
3412 mmaptype (d_mmap.U):
3413 This symbol contains the type of pointer returned by mmap()
3414 (and simultaneously the type of the first argument).
3415 It can be 'void *' or 'caddr_t'.
3417 modetype (modetype.U):
3418 This variable defines modetype to be something like mode_t,
3419 int, unsigned short, or whatever type is used to declare file
3420 modes for system calls.
3423 This variable is used internally by Configure to determine the
3424 full pathname (if any) of the more program. After Configure runs,
3425 the value is reset to a plain "more" and is not useful.
3427 multiarch (multiarch.U):
3428 This variable conditionally defines the MULTIARCH symbol
3429 which signifies the presence of multiplatform files.
3430 This is normally set by hints files.
3433 This variable is defined but not used by Configure.
3434 The value is a plain '' and is not useful.
3436 myarchname (archname.U):
3437 This variable holds the architecture name computed by Configure in
3438 a previous run. It is not intended to be perused by any user and
3439 should never be set in a hint file.
3441 mydomain (myhostname.U):
3442 This variable contains the eventual value of the MYDOMAIN symbol,
3443 which is the domain of the host the program is going to run on.
3444 The domain must be appended to myhostname to form a complete host name.
3445 The dot comes with mydomain, and need not be supplied by the program.
3447 myhostname (myhostname.U):
3448 This variable contains the eventual value of the MYHOSTNAME symbol,
3449 which is the name of the host the program is going to run on.
3450 The domain is not kept with hostname, but must be gotten from mydomain.
3451 The dot comes with mydomain, and need not be supplied by the program.
3453 myuname (Oldconfig.U):
3454 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3455 pseudo variables assignments in the output are stripped, thank you. The
3456 whole thing is then lower-cased.
3459 This variable contains the '-n' flag if that is what causes the echo
3460 command to suppress newline. Otherwise it is null. Correct usage is
3461 $echo $n "prompt for a question: $c".
3463 need_va_copy (need_va_copy.U):
3464 This symbol, if defined, indicates that the system stores
3465 the variable argument list datatype, va_list, in a format
3466 that cannot be copied by simple assignment, so that some
3467 other means must be used when copying is required.
3468 As such systems vary in their provision (or non-provision)
3469 of copying mechanisms, handy.h defines a platform-
3470 independent macro, Perl_va_copy(src, dst), to do the job.
3472 netdb_hlen_type (netdbtype.U):
3473 This variable holds the type used for the 2nd argument to
3474 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3475 This is only useful if you have gethostbyaddr(), naturally.
3477 netdb_host_type (netdbtype.U):
3478 This variable holds the type used for the 1st argument to
3479 gethostbyaddr(). Usually, this is char * or void *, possibly
3480 with or without a const prefix.
3481 This is only useful if you have gethostbyaddr(), naturally.
3483 netdb_name_type (netdbtype.U):
3484 This variable holds the type used for the argument to
3485 gethostbyname(). Usually, this is char * or const char *.
3486 This is only useful if you have gethostbyname(), naturally.
3488 netdb_net_type (netdbtype.U):
3489 This variable holds the type used for the 1st argument to
3490 getnetbyaddr(). Usually, this is int or long.
3491 This is only useful if you have getnetbyaddr(), naturally.
3494 This variable is used internally by Configure to determine the
3495 full pathname (if any) of the nm program. After Configure runs,
3496 the value is reset to a plain "nm" and is not useful.
3499 This variable holds the options that may be necessary for nm.
3501 nm_so_opt (usenm.U):
3502 This variable holds the options that may be necessary for nm
3503 to work on a shared library but that can not be used on an
3504 archive library. Currently, this is only used by Linux, where
3505 nm --dynamic is *required* to get symbols from an ELF library which
3506 has been stripped, but nm --dynamic is *fatal* on an archive library.
3507 Maybe Linux should just always set usenm=false.
3509 nonxs_ext (Extensions.U):
3510 This variable holds a list of all non-xs extensions included
3511 in the package. All of them will be built.
3514 This variable is used internally by Configure to determine the
3515 full pathname (if any) of the nroff program. After Configure runs,
3516 the value is reset to a plain "nroff" and is not useful.
3518 nvEUformat (perlxvf.U):
3519 This variable contains the format string used for printing
3520 a Perl NV using %E-ish floating point format.
3522 nvFUformat (perlxvf.U):
3523 This variable confains the format string used for printing
3524 a Perl NV using %F-ish floating point format.
3526 nvGUformat (perlxvf.U):
3527 This variable contains the format string used for printing
3528 a Perl NV using %G-ish floating point format.
3530 nv_preserves_uv_bits (perlxv.U):
3531 This variable indicates how many of bits type uvtype
3532 a variable nvtype can preserve.
3534 nveformat (perlxvf.U):
3535 This variable contains the format string used for printing
3536 a Perl NV using %e-ish floating point format.
3538 nvfformat (perlxvf.U):
3539 This variable confains the format string used for printing
3540 a Perl NV using %f-ish floating point format.
3542 nvgformat (perlxvf.U):
3543 This variable contains the format string used for printing
3544 a Perl NV using %g-ish floating point format.
3547 This variable is the size of an NV in bytes.
3550 This variable contains the C type used for Perl's NV.
3552 o_nonblock (nblock_io.U):
3553 This variable bears the symbol value to be used during open() or fcntl()
3554 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3555 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3556 but that is only supported by some devices.
3559 This is an old synonym for _o.
3561 old_pthread_create_joinable (d_pthrattrj.U):
3562 This variable defines the constant to use for creating joinable
3563 (aka undetached) pthreads. Unused if pthread.h defines
3564 PTHREAD_CREATE_JOINABLE. If used, possible values are
3565 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3567 optimize (ccflags.U):
3568 This variable contains any optimizer/debugger flag that should be used.
3569 It is up to the Makefile to use it.
3571 orderlib (orderlib.U):
3572 This variable is "true" if the components of libraries must be ordered
3573 (with `lorder $* | tsort`) before placing them in an archive. Set to
3574 "false" if ranlib or ar can generate random libraries.
3576 osname (Oldconfig.U):
3577 This variable contains the operating system name (e.g. sunos,
3578 solaris, hpux, etc.). It can be useful later on for setting
3579 defaults. Any spaces are replaced with underscores. It is set
3580 to a null string if we can't figure it out.
3582 osvers (Oldconfig.U):
3583 This variable contains the operating system version (e.g.
3584 4.1.3, 5.2, etc.). It is primarily used for helping select
3585 an appropriate hints file, but might be useful elsewhere for
3586 setting defaults. It is set to '' if we can't figure it out.
3587 We try to be flexible about how much of the version number
3588 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3589 same for this package, hints files might just be os_4.0 or
3590 os_4.1, etc., not keeping separate files for each little release.
3592 otherlibdirs (otherlibdirs.U):
3593 This variable contains a colon-separated set of paths for the perl
3594 binary to search for additional library files or modules.
3595 These directories will be tacked to the end of @INC.
3596 Perl will automatically search below each path for version-
3597 and architecture-specific directories. See inc_version_list
3599 A value of ' ' means 'none' and is used to preserve this value
3600 for the next run through Configure.
3602 package (package.U):
3603 This variable contains the name of the package being constructed.
3604 It is primarily intended for the use of later Configure units.
3607 This variable contains the name of the preferred pager on the system.
3608 Usual values are (the full pathnames of) more, less, pg, or cat.
3611 This variable contains a command that produces the text of the
3612 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3613 "ypcat passwd" when NIS is used.
3614 On some systems, such as os390, there may be no equivalent
3615 command, in which case this variable is unset.
3617 patchlevel (patchlevel.U):
3618 The patchlevel level of this package.
3619 The value of patchlevel comes from the patchlevel.h file.
3620 In a version number such as 5.6.1, this is the "6".
3621 In patchlevel.h, this is referred to as "PERL_VERSION".
3624 This is an old synonym for p_ in Head.U, the character
3625 used to separate elements in the command shell search PATH.
3628 This variable contains the full path (if any) to a previously
3629 installed perl5.005 or later suitable for running the script
3630 to determine inc_version_list.
3633 This variable is defined but not used by Configure.
3634 The value is a plain '' and is not useful.
3636 perl_patchlevel (patchlevel.U):
3637 This is the Perl patch level, a numeric change identifier,
3638 as defined by whichever source code maintenance system
3639 is used to maintain the patches; currently Perforce.
3640 It does not correlate with the Perl version numbers or
3641 the maintenance versus development dichotomy except
3642 by also being increasing.
3644 perladmin (perladmin.U):
3645 Electronic mail address of the perl5 administrator.
3648 The list of libraries needed by Perl only (any libraries needed
3649 by extensions only will by dropped, if using dynamic loading).
3651 perlpath (perlpath.U):
3652 This variable contains the eventual value of the PERLPATH symbol,
3653 which contains the name of the perl interpreter to be used in
3654 shell scripts and in the "eval 'exec'" idiom. This variable is
3655 not necessarily the pathname of the file containing the perl
3656 interpreter; you must append the executable extension (_exe) if
3657 it is not already present. Note that Perl code that runs during
3658 the Perl build process cannot reference this variable, as Perl
3659 may not have been installed, or even if installed, may be a
3660 different version of Perl.
3663 This variable is used internally by Configure to determine the
3664 full pathname (if any) of the pg program. After Configure runs,
3665 the value is reset to a plain "pg" and is not useful.
3667 phostname (myhostname.U):
3668 This variable contains the eventual value of the PHOSTNAME symbol,
3669 which is a command that can be fed to popen() to get the host name.
3670 The program should probably not presume that the domain is or isn't
3673 pidtype (pidtype.U):
3674 This variable defines PIDTYPE to be something like pid_t, int,
3675 ushort, or whatever type is used to declare process ids in the kernel.
3678 Holds the private path used by Configure to find out the libraries.
3679 Its value is prepend to libpth. This variable takes care of special
3680 machines, like the mips. Usually, it should be empty.
3682 pm_apiversion (xs_apiversion.U):
3683 This variable contains the version of the oldest perl
3684 compatible with the present perl. (That is, pure perl modules
3685 written for $pm_apiversion will still work for the current
3686 version). perl.c:incpush() and lib/lib.pm will automatically
3687 search in $sitelib for older directories across major versions
3688 back to pm_apiversion. This is only useful if you have a perl
3689 library directory tree structured like the default one. The
3690 versioned site_perl library was introduced in 5.005, so that's
3691 the default setting for this variable. It's hard to imagine
3692 it changing before Perl6. It is included here for symmetry
3693 with xs_apiveprsion -- the searching algorithms will
3694 (presumably) be similar.
3695 See the INSTALL file for how this works.
3698 This variable is defined but not used by Configure.
3699 The value is a plain '' and is not useful.
3702 This variable is defined but not used by Configure.
3703 The value is a plain '' and is not useful.
3706 This variable holds the name of the directory below which the
3707 user will install the package. Usually, this is /usr/local, and
3708 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3709 man pages in /usr/local/man, etc. It is only used to set defaults
3710 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3712 prefixexp (prefix.U):
3713 This variable holds the full absolute path of the directory below
3714 which the user will install the package. Derived from prefix.
3716 privlib (privlib.U):
3717 This variable contains the eventual value of the PRIVLIB symbol,
3718 which is the name of the private library for this package. It may
3719 have a ~ on the front. It is up to the makefile to eventually create
3720 this directory while performing installation (with ~ substitution).
3722 privlibexp (privlib.U):
3723 This variable is the ~name expanded version of privlib, so that you
3724 may use it directly in Makefiles or shell scripts.
3726 procselfexe (d_procselfexe.U):
3727 If d_procselfexe is defined, $procselfexe is the filename
3728 of the symbolic link pointing to the absolute pathname of
3729 the executing program.
3731 prototype (prototype.U):
3732 This variable holds the eventual value of CAN_PROTOTYPE, which
3733 indicates the C compiler can handle funciton prototypes.
3735 ptrsize (ptrsize.U):
3736 This variable contains the value of the PTRSIZE symbol, which
3737 indicates to the C program how many bytes there are in a pointer.
3739 quadkind (quadtype.U):
3740 This variable, if defined, encodes the type of a quad:
3741 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3743 quadtype (quadtype.U):
3744 This variable defines Quad_t to be something like long, int,
3745 long long, int64_t, or whatever type is used for 64-bit integers.
3747 randbits (randfunc.U):
3748 Indicates how many bits are produced by the function used to
3749 generate normalized random numbers.
3751 randfunc (randfunc.U):
3752 Indicates the name of the random number function to use.
3753 Values include drand48, random, and rand. In C programs,
3754 the 'Drand01' macro is defined to generate uniformly distributed
3755 random numbers over the range [0., 1.[ (see drand01 and nrand).
3757 random_r_proto (d_random_r.U):
3758 This variable encodes the prototype of random_r.
3759 It is zero if d_random_r is undef, and one of the
3760 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3763 randseedtype (randfunc.U):
3764 Indicates the type of the argument of the seedfunc.
3766 ranlib (orderlib.U):
3767 This variable is set to the pathname of the ranlib program, if it is
3768 needed to generate random libraries. Set to ":" if ar can generate
3769 random libraries or if random libraries are not supported
3771 rd_nodata (nblock_io.U):
3772 This variable holds the return code from read() when no data is
3773 present. It should be -1, but some systems return 0 when O_NDELAY is
3774 used, which is a shame because you cannot make the difference between
3775 no data and an EOF.. Sigh!
3777 readdir64_r_proto (d_readdir64_r.U):
3778 This variable encodes the prototype of readdir64_r.
3779 It is zero if d_readdir64_r is undef, and one of the
3780 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3783 readdir_r_proto (d_readdir_r.U):
3784 This variable encodes the prototype of readdir_r.
3785 It is zero if d_readdir_r is undef, and one of the
3786 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3789 revision (patchlevel.U):
3790 The value of revision comes from the patchlevel.h file.
3791 In a version number such as 5.6.1, this is the "5".
3792 In patchlevel.h, this is referred to as "PERL_REVISION".
3795 This variable is used internally by Configure to determine the
3796 full pathname (if any) of the rm program. After Configure runs,
3797 the value is reset to a plain "rm" and is not useful.
3800 This variable is defined but not used by Configure.
3801 The value is a plain '' and is not useful.
3804 This variable contains the command used by Configure
3805 to copy and execute a cross-compiled executable in the
3806 target host. Useful and available only during Perl build.
3807 Empty string '' if not cross-compiling.
3810 This variable contains 'true' or 'false' depending whether the
3811 nm extraction should be performed or not, according to the value
3812 of usenm and the flags on the Configure command line.
3814 sPRIEUldbl (longdblfio.U):
3815 This variable, if defined, contains the string used by stdio to
3816 format long doubles (format 'E') for output.
3817 The 'U' in the name is to separate this from sPRIeldbl so that even
3818 case-blind systems can see the difference.
3820 sPRIFUldbl (longdblfio.U):
3821 This variable, if defined, contains the string used by stdio to
3822 format long doubles (format 'F') for output.
3823 The 'U' in the name is to separate this from sPRIfldbl so that even
3824 case-blind systems can see the difference.
3826 sPRIGUldbl (longdblfio.U):
3827 This variable, if defined, contains the string used by stdio to
3828 format long doubles (format 'G') for output.
3829 The 'U' in the name is to separate this from sPRIgldbl so that even
3830 case-blind systems can see the difference.
3832 sPRIXU64 (quadfio.U):
3833 This variable, if defined, contains the string used by stdio to
3834 format 64-bit hExADECimAl numbers (format 'X') for output.
3835 The 'U' in the name is to separate this from sPRIx64 so that even
3836 case-blind systems can see the difference.
3838 sPRId64 (quadfio.U):
3839 This variable, if defined, contains the string used by stdio to
3840 format 64-bit decimal numbers (format 'd') for output.
3842 sPRIeldbl (longdblfio.U):
3843 This variable, if defined, contains the string used by stdio to
3844 format long doubles (format 'e') for output.
3846 sPRIfldbl (longdblfio.U):
3847 This variable, if defined, contains the string used by stdio to
3848 format long doubles (format 'f') for output.
3850 sPRIgldbl (longdblfio.U):
3851 This variable, if defined, contains the string used by stdio to
3852 format long doubles (format 'g') for output.
3854 sPRIi64 (quadfio.U):
3855 This variable, if defined, contains the string used by stdio to
3856 format 64-bit decimal numbers (format 'i') for output.
3858 sPRIo64 (quadfio.U):
3859 This variable, if defined, contains the string used by stdio to
3860 format 64-bit octal numbers (format 'o') for output.
3862 sPRIu64 (quadfio.U):
3863 This variable, if defined, contains the string used by stdio to
3864 format 64-bit unsigned decimal numbers (format 'u') for output.
3866 sPRIx64 (quadfio.U):
3867 This variable, if defined, contains the string used by stdio to
3868 format 64-bit hexadecimal numbers (format 'x') for output.
3870 sSCNfldbl (longdblfio.U):
3871 This variable, if defined, contains the string used by stdio to
3872 format long doubles (format 'f') for input.
3874 sched_yield (d_pthread_y.U):
3875 This variable defines the way to yield the execution
3876 of the current thread.
3878 scriptdir (scriptdir.U):
3879 This variable holds the name of the directory in which the user wants
3880 to put publicly scripts for the package in question. It is either
3881 the same directory as for binaries, or a special one that can be
3882 mounted across different architectures, like /usr/share. Programs
3883 must be prepared to deal with ~name expansion.
3885 scriptdirexp (scriptdir.U):
3886 This variable is the same as scriptdir, but is filename expanded
3887 at configuration time, for programs not wanting to bother with it.
3890 This variable is used internally by Configure to determine the
3891 full pathname (if any) of the sed program. After Configure runs,
3892 the value is reset to a plain "sed" and is not useful.
3894 seedfunc (randfunc.U):
3895 Indicates the random number generating seed function.
3896 Values include srand48, srandom, and srand.
3898 selectminbits (selectminbits.U):
3899 This variable holds the minimum number of bits operated by select.
3900 That is, if you do select(n, ...), how many bits at least will be
3901 cleared in the masks if some activity is detected. Usually this
3902 is either n or 32*ceil(n/32), especially many little-endians do
3903 the latter. This is only useful if you have select(), naturally.
3905 selecttype (selecttype.U):
3906 This variable holds the type used for the 2nd, 3rd, and 4th
3907 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3908 is defined, and 'int *' otherwise. This is only useful if you
3909 have select(), naturally.
3912 This variable is defined but not used by Configure.
3913 The value is a plain '' and is not useful.
3915 setgrent_r_proto (d_setgrent_r.U):
3916 This variable encodes the prototype of setgrent_r.
3917 It is zero if d_setgrent_r is undef, and one of the
3918 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
3921 sethostent_r_proto (d_sethostent_r.U):
3922 This variable encodes the prototype of sethostent_r.
3923 It is zero if d_sethostent_r is undef, and one of the
3924 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
3927 setlocale_r_proto (d_setlocale_r.U):
3928 This variable encodes the prototype of setlocale_r.
3929 It is zero if d_setlocale_r is undef, and one of the
3930 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
3933 setnetent_r_proto (d_setnetent_r.U):
3934 This variable encodes the prototype of setnetent_r.
3935 It is zero if d_setnetent_r is undef, and one of the
3936 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
3939 setprotoent_r_proto (d_setprotoent_r.U):
3940 This variable encodes the prototype of setprotoent_r.
3941 It is zero if d_setprotoent_r is undef, and one of the
3942 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
3945 setpwent_r_proto (d_setpwent_r.U):
3946 This variable encodes the prototype of setpwent_r.
3947 It is zero if d_setpwent_r is undef, and one of the
3948 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
3951 setservent_r_proto (d_setservent_r.U):
3952 This variable encodes the prototype of setservent_r.
3953 It is zero if d_setservent_r is undef, and one of the
3954 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
3958 This variable contains the full pathname of the shell used
3959 on this system to execute Bourne shell scripts. Usually, this will be
3960 /bin/sh, though it's possible that some systems will have /bin/ksh,
3961 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3963 This unit comes before Options.U, so you can't set sh with a '-D'
3964 option, though you can override this (and startsh)
3965 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3968 This variable is defined but not used by Configure.
3969 The value is a plain '' and is not useful.
3971 sharpbang (spitshell.U):
3972 This variable contains the string #! if this system supports that
3975 shmattype (d_shmat.U):
3976 This symbol contains the type of pointer returned by shmat().
3977 It can be 'void *' or 'char *'.
3979 shortsize (intsize.U):
3980 This variable contains the value of the SHORTSIZE symbol which
3981 indicates to the C program how many bytes there are in a short.
3983 shrpenv (libperl.U):
3984 If the user builds a shared libperl.so, then we need to tell the
3985 'perl' executable where it will be able to find the installed libperl.so.
3986 One way to do this on some systems is to set the environment variable
3987 LD_RUN_PATH to the directory that will be the final location of the
3988 shared libperl.so. The makefile can use this with something like
3989 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3991 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3994 See the main perl Makefile.SH for actual working usage.
3995 Alternatively, we might be able to use a command line option such
3996 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
3997 $archlibexp/CORE (Linux).
3999 shsharp (spitshell.U):
4000 This variable tells further Configure units whether your sh can
4003 sig_count (sig_name.U):
4004 This variable holds a number larger than the largest valid
4005 signal number. This is usually the same as the NSIG macro.
4007 sig_name (sig_name.U):
4008 This variable holds the signal names, space separated. The leading
4009 SIG in signal name is removed. A ZERO is prepended to the
4010 list. This is currently not used.
4012 sig_name_init (sig_name.U):
4013 This variable holds the signal names, enclosed in double quotes and
4014 separated by commas, suitable for use in the SIG_NAME definition
4015 below. A "ZERO" is prepended to the list, and the list is
4016 terminated with a plain 0. The leading SIG in signal names
4017 is removed. See sig_num.
4019 sig_num (sig_name.U):
4020 This variable holds the signal numbers, space separated. A ZERO is
4021 prepended to the list (corresponding to the fake SIGZERO), and
4022 the list is terminated with a 0. Those numbers correspond to
4023 the value of the signal listed in the same place within the
4026 sig_num_init (sig_name.U):
4027 This variable holds the signal numbers, enclosed in double quotes and
4028 separated by commas, suitable for use in the SIG_NUM definition
4029 below. A "ZERO" is prepended to the list, and the list is
4030 terminated with a plain 0.
4032 sig_size (sig_name.U):
4033 This variable contains the number of elements of the sig_name
4034 and sig_num arrays, excluding the final NULL entry.
4036 signal_t (d_voidsig.U):
4037 This variable holds the type of the signal handler (void or int).
4039 sitearch (sitearch.U):
4040 This variable contains the eventual value of the SITEARCH symbol,
4041 which is the name of the private library for this package. It may
4042 have a ~ on the front. It is up to the makefile to eventually create
4043 this directory while performing installation (with ~ substitution).
4044 The standard distribution will put nothing in this directory.
4045 After perl has been installed, users may install their own local
4046 architecture-dependent modules in this directory with
4047 MakeMaker Makefile.PL
4048 or equivalent. See INSTALL for details.
4050 sitearchexp (sitearch.U):
4051 This variable is the ~name expanded version of sitearch, so that you
4052 may use it directly in Makefiles or shell scripts.
4054 sitebin (sitebin.U):
4055 This variable holds the name of the directory in which the user wants
4056 to put add-on publicly executable files for the package in question. It
4057 is most often a local directory such as /usr/local/bin. Programs using
4058 this variable must be prepared to deal with ~name substitution.
4059 The standard distribution will put nothing in this directory.
4060 After perl has been installed, users may install their own local
4061 executables in this directory with
4062 MakeMaker Makefile.PL
4063 or equivalent. See INSTALL for details.
4065 sitebinexp (sitebin.U):
4066 This is the same as the sitebin variable, but is filename expanded at
4067 configuration time, for use in your makefiles.
4069 sitelib (sitelib.U):
4070 This variable contains the eventual value of the SITELIB symbol,
4071 which is the name of the private library for this package. It may
4072 have a ~ on the front. It is up to the makefile to eventually create
4073 this directory while performing installation (with ~ substitution).
4074 The standard distribution will put nothing in this directory.
4075 After perl has been installed, users may install their own local
4076 architecture-independent modules in this directory with
4077 MakeMaker Makefile.PL
4078 or equivalent. See INSTALL for details.
4080 sitelib_stem (sitelib.U):
4081 This variable is $sitelibexp with any trailing version-specific component
4082 removed. The elements in inc_version_list (inc_version_list.U) can
4083 be tacked onto this variable to generate a list of directories to search.
4085 sitelibexp (sitelib.U):
4086 This variable is the ~name expanded version of sitelib, so that you
4087 may use it directly in Makefiles or shell scripts.
4089 siteprefix (siteprefix.U):
4090 This variable holds the full absolute path of the directory below
4091 which the user will install add-on packages.
4092 See INSTALL for usage and examples.
4094 siteprefixexp (siteprefix.U):
4095 This variable holds the full absolute path of the directory below
4096 which the user will install add-on packages. Derived from siteprefix.
4098 sizesize (sizesize.U):
4099 This variable contains the size of a sizetype in bytes.
4101 sizetype (sizetype.U):
4102 This variable defines sizetype to be something like size_t,
4103 unsigned long, or whatever type is used to declare length
4104 parameters for string functions.
4107 This variable is defined but not used by Configure.
4108 The value is a plain '' and is not useful.
4111 This variable is defined but not used by Configure.
4112 The value is a plain '' and is not useful.
4115 This variable holds the extension used to identify shared libraries
4116 (also known as shared objects) on the system. Usually set to 'so'.
4118 sockethdr (d_socket.U):
4119 This variable has any cpp '-I' flags needed for socket support.
4121 socketlib (d_socket.U):
4122 This variable has the names of any libraries needed for socket support.
4124 socksizetype (socksizetype.U):
4125 This variable holds the type used for the size argument
4126 for various socket calls like accept. Usual values include
4127 socklen_t, size_t, and int.
4130 This variable is used internally by Configure to determine the
4131 full pathname (if any) of the sort program. After Configure runs,
4132 the value is reset to a plain "sort" and is not useful.
4134 spackage (package.U):
4135 This variable contains the name of the package being constructed,
4136 with the first letter uppercased, i.e. suitable for starting
4139 spitshell (spitshell.U):
4140 This variable contains the command necessary to spit out a runnable
4141 shell on this system. It is either cat or a grep -v for # comments.
4143 srand48_r_proto (d_srand48_r.U):
4144 This variable encodes the prototype of srand48_r.
4145 It is zero if d_srand48_r is undef, and one of the
4146 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4149 srandom_r_proto (d_srandom_r.U):
4150 This variable encodes the prototype of srandom_r.
4151 It is zero if d_srandom_r is undef, and one of the
4152 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4156 This variable holds the path to the package source. It is up to
4157 the Makefile to use this variable and set VPATH accordingly to
4158 find the sources remotely.
4160 ssizetype (ssizetype.U):
4161 This variable defines ssizetype to be something like ssize_t,
4162 long or int. It is used by functions that return a count
4163 of bytes or an error condition. It must be a signed type.
4164 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4166 startperl (startperl.U):
4167 This variable contains the string to put on the front of a perl
4168 script to make sure (hopefully) that it runs with perl and not some
4169 shell. Of course, that leading line must be followed by the classical
4171 eval 'exec perl -S $0 ${1+"$@"}'
4172 if $running_under_some_shell;
4173 to guarantee perl startup should the shell execute the script. Note
4174 that this magic incatation is not understood by csh.
4176 startsh (startsh.U):
4177 This variable contains the string to put on the front of a shell
4178 script to make sure (hopefully) that it runs with sh and not some
4181 static_ext (Extensions.U):
4182 This variable holds a list of XS extension files we want to
4183 link statically into the package. It is used by Makefile.
4185 stdchar (stdchar.U):
4186 This variable conditionally defines STDCHAR to be the type of char
4187 used in stdio.h. It has the values "unsigned char" or "char".
4189 stdio_base (d_stdstdio.U):
4190 This variable defines how, given a FILE pointer, fp, to access the
4191 _base field (or equivalent) of stdio.h's FILE structure. This will
4192 be used to define the macro FILE_base(fp).
4194 stdio_bufsiz (d_stdstdio.U):
4195 This variable defines how, given a FILE pointer, fp, to determine
4196 the number of bytes store in the I/O buffer pointer to by the
4197 _base field (or equivalent) of stdio.h's FILE structure. This will
4198 be used to define the macro FILE_bufsiz(fp).
4200 stdio_cnt (d_stdstdio.U):
4201 This variable defines how, given a FILE pointer, fp, to access the
4202 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4203 be used to define the macro FILE_cnt(fp).
4205 stdio_filbuf (d_stdstdio.U):
4206 This variable defines how, given a FILE pointer, fp, to tell
4207 stdio to refill its internal buffers (?). This will
4208 be used to define the macro FILE_filbuf(fp).
4210 stdio_ptr (d_stdstdio.U):
4211 This variable defines how, given a FILE pointer, fp, to access the
4212 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4213 be used to define the macro FILE_ptr(fp).
4215 stdio_stream_array (stdio_streams.U):
4216 This variable tells the name of the array holding the stdio streams.
4217 Usual values include _iob, __iob, and __sF.
4219 strerror_r_proto (d_strerror_r.U):
4220 This variable encodes the prototype of strerror_r.
4221 It is zero if d_strerror_r is undef, and one of the
4222 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4225 strings (i_string.U):
4226 This variable holds the full path of the string header that will be
4227 used. Typically /usr/include/string.h or /usr/include/strings.h.
4230 This variable is defined but not used by Configure.
4231 The value is a plain '' and is not useful.
4233 subversion (patchlevel.U):
4234 The subversion level of this package.
4235 The value of subversion comes from the patchlevel.h file.
4236 In a version number such as 5.6.1, this is the "1".
4237 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4238 This is unique to perl.
4241 This variable holds the place where the manual is located on this
4242 system. It is not the place where the user wants to put his manual
4243 pages. Rather it is the place where Configure may look to find manual
4244 for unix commands (section 1 of the manual usually). See mansrc.
4247 This variable is defined but not used by Configure.
4248 The value is a plain '' and is not useful.
4251 This variable is defined but not used by Configure.
4252 The value is a plain '' and is not useful.
4254 targetarch (Cross.U):
4255 If cross-compiling, this variable contains the target architecture.
4256 If not, this will be empty.
4259 This variable is defined but not used by Configure.
4260 The value is a plain '' and is not useful.
4263 This variable is defined but not used by Configure.
4264 The value is a plain '' and is not useful.
4267 This variable is used internally by Configure to determine the
4268 full pathname (if any) of the test program. After Configure runs,
4269 the value is reset to a plain "test" and is not useful.
4271 timeincl (i_time.U):
4272 This variable holds the full path of the included time header(s).
4274 timetype (d_time.U):
4275 This variable holds the type returned by time(). It can be long,
4276 or time_t on BSD sites (in which case <sys/types.h> should be
4277 included). Anyway, the type Time_t should be used.
4279 tmpnam_r_proto (d_tmpnam_r.U):
4280 This variable encodes the prototype of tmpnam_r.
4281 It is zero if d_tmpnam_r is undef, and one of the
4282 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4286 This variable contains the command used by Configure
4287 to copy to from the target host. Useful and available
4288 only during Perl build.
4289 The string ':' if not cross-compiling.
4292 This variable is used internally by Configure to determine the
4293 full pathname (if any) of the touch program. After Configure runs,
4294 the value is reset to a plain "touch" and is not useful.
4297 This variable is used internally by Configure to determine the
4298 full pathname (if any) of the tr program. After Configure runs,
4299 the value is reset to a plain "tr" and is not useful.
4302 This variable contains the value to be passed to the tr(1)
4303 command to transliterate a newline. Typical values are
4304 '\012' and '\n'. This is needed for EBCDIC systems where
4305 newline is not necessarily '\012'.
4308 This variable is defined but not used by Configure.
4309 The value is a plain '' and is not useful.
4311 ttyname_r_proto (d_ttyname_r.U):
4312 This variable encodes the prototype of ttyname_r.
4313 It is zero if d_ttyname_r is undef, and one of the
4314 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4318 This variable is the size of an U16 in bytes.
4321 This variable contains the C type used for Perl's U16.
4324 This variable is the size of an U32 in bytes.
4327 This variable contains the C type used for Perl's U32.
4330 This variable is the size of an U64 in bytes.
4333 This variable contains the C type used for Perl's U64.
4336 This variable is the size of an U8 in bytes.
4339 This variable contains the C type used for Perl's U8.
4342 This variable contains the format string used for printing a Uid_t.
4344 uidsign (uidsign.U):
4345 This variable contains the signedness of a uidtype.
4346 1 for unsigned, -1 for signed.
4348 uidsize (uidsize.U):
4349 This variable contains the size of a uidtype in bytes.
4351 uidtype (uidtype.U):
4352 This variable defines Uid_t to be something like uid_t, int,
4353 ushort, or whatever type is used to declare user ids in the kernel.
4356 This variable is used internally by Configure to determine the
4357 full pathname (if any) of the uname program. After Configure runs,
4358 the value is reset to a plain "uname" and is not useful.
4361 This variable is used internally by Configure to determine the
4362 full pathname (if any) of the uniq program. After Configure runs,
4363 the value is reset to a plain "uniq" and is not useful.
4365 uquadtype (quadtype.U):
4366 This variable defines Uquad_t to be something like unsigned long,
4367 unsigned int, unsigned long long, uint64_t, or whatever type is
4368 used for 64-bit integers.
4370 use64bitall (use64bits.U):
4371 This variable conditionally defines the USE_64_BIT_ALL symbol,
4372 and indicates that 64-bit integer types should be used
4373 when available. The maximal possible
4374 64-bitness is employed: LP64 or ILP64, meaning that you will
4375 be able to use more than 2 gigabytes of memory. This mode is
4376 even more binary incompatible than USE_64_BIT_INT. You may not
4377 be able to run the resulting executable in a 32-bit CPU at all or
4378 you may need at least to reboot your OS to 64-bit mode.
4380 use64bitint (use64bits.U):
4381 This variable conditionally defines the USE_64_BIT_INT symbol,
4382 and indicates that 64-bit integer types should be used
4383 when available. The minimal possible 64-bitness
4384 is employed, just enough to get 64-bit integers into Perl.
4385 This may mean using for example "long longs", while your memory
4386 may still be limited to 2 gigabytes.
4388 usecrosscompile (Cross.U):
4389 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4390 and indicates that Perl has been cross-compiled.
4393 This variable indicates if the system supports dynamic
4394 loading of some sort. See also dlsrc and dlobj.
4396 useithreads (usethreads.U):
4397 This variable conditionally defines the USE_ITHREADS symbol,
4398 and indicates that Perl should be built to use the interpreter-based
4399 threading implementation.
4401 uselargefiles (uselfs.U):
4402 This variable conditionally defines the USE_LARGE_FILES symbol,
4403 and indicates that large file interfaces should be used when
4406 uselongdouble (uselongdbl.U):
4407 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4408 and indicates that long doubles should be used when available.
4410 usemorebits (usemorebits.U):
4411 This variable conditionally defines the USE_MORE_BITS symbol,
4412 and indicates that explicit 64-bit interfaces and long doubles
4413 should be used when available.
4415 usemultiplicity (usemultiplicity.U):
4416 This variable conditionally defines the MULTIPLICITY symbol,
4417 and indicates that Perl should be built to use multiplicity.
4419 usemymalloc (mallocsrc.U):
4420 This variable contains y if the malloc that comes with this package
4421 is desired over the system's version of malloc. People often include
4422 special versions of malloc for effiency, but such versions are often
4423 less portable. See also mallocsrc and mallocobj.
4424 If this is 'y', then -lmalloc is removed from $libs.
4427 This variable contains 'true' or 'false' depending whether the
4428 nm extraction is wanted or not.
4430 useopcode (Extensions.U):
4431 This variable holds either 'true' or 'false' to indicate
4432 whether the Opcode extension should be used. The sole
4433 use for this currently is to allow an easy mechanism
4434 for users to skip the Opcode extension from the Configure
4437 useperlio (useperlio.U):
4438 This variable conditionally defines the USE_PERLIO symbol,
4439 and indicates that the PerlIO abstraction should be
4442 useposix (Extensions.U):
4443 This variable holds either 'true' or 'false' to indicate
4444 whether the POSIX extension should be used. The sole
4445 use for this currently is to allow an easy mechanism
4446 for hints files to indicate that POSIX will not compile
4447 on a particular system.
4449 usereentrant (usethreads.U):
4450 This variable conditionally defines the USE_REENTRANT_API symbol,
4451 which indicates that the thread code may try to use the various
4452 _r versions of library functions. This is only potentially
4453 meaningful if usethreads is set and is very experimental, it is
4454 not even prompted for.
4457 This variable is set to true when the user agrees to use sfio.
4458 It is set to false when sfio is not available or when the user
4459 explicitely requests not to use sfio. It is here primarily so
4460 that command-line settings can override the auto-detection of
4461 d_sfio without running into a "WHOA THERE".
4463 useshrplib (libperl.U):
4464 This variable is set to 'true' if the user wishes
4465 to build a shared libperl, and 'false' otherwise.
4467 usesocks (usesocks.U):
4468 This variable conditionally defines the USE_SOCKS symbol,
4469 and indicates that Perl should be built to use SOCKS.
4471 usethreads (usethreads.U):
4472 This variable conditionally defines the USE_THREADS symbol,
4473 and indicates that Perl should be built to use threads.
4475 usevendorprefix (vendorprefix.U):
4476 This variable tells whether the vendorprefix
4477 and consequently other vendor* paths are in use.
4479 usevfork (d_vfork.U):
4480 This variable is set to true when the user accepts to use vfork.
4481 It is set to false when no vfork is available or when the user
4482 explicitely requests not to use vfork.
4485 This variable holds the path of the include files, which is
4486 usually /usr/include. It is mainly used by other Configure units.
4489 This variable is defined but not used by Configure.
4490 The value is a plain '' and is not useful.
4492 uvXUformat (perlxvf.U):
4493 This variable contains the format string used for printing
4494 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4496 uvoformat (perlxvf.U):
4497 This variable contains the format string used for printing
4498 a Perl UV as an unsigned octal integer.
4501 This variable is the size of a UV in bytes.
4504 This variable contains the C type used for Perl's UV.
4506 uvuformat (perlxvf.U):
4507 This variable contains the format string used for printing
4508 a Perl UV as an unsigned decimal integer.
4510 uvxformat (perlxvf.U):
4511 This variable contains the format string used for printing
4512 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4514 vendorarch (vendorarch.U):
4515 This variable contains the value of the PERL_VENDORARCH symbol.
4516 It may have a ~ on the front.
4517 The standard distribution will put nothing in this directory.
4518 Vendors who distribute perl may wish to place their own
4519 architecture-dependent modules and extensions in this directory with
4520 MakeMaker Makefile.PL INSTALLDIRS=vendor
4521 or equivalent. See INSTALL for details.
4523 vendorarchexp (vendorarch.U):
4524 This variable is the ~name expanded version of vendorarch, so that you
4525 may use it directly in Makefiles or shell scripts.
4527 vendorbin (vendorbin.U):
4528 This variable contains the eventual value of the VENDORBIN symbol.
4529 It may have a ~ on the front.
4530 The standard distribution will put nothing in this directory.
4531 Vendors who distribute perl may wish to place additional
4532 binaries in this directory with
4533 MakeMaker Makefile.PL INSTALLDIRS=vendor
4534 or equivalent. See INSTALL for details.
4536 vendorbinexp (vendorbin.U):
4537 This variable is the ~name expanded version of vendorbin, so that you
4538 may use it directly in Makefiles or shell scripts.
4540 vendorlib (vendorlib.U):
4541 This variable contains the eventual value of the VENDORLIB symbol,
4542 which is the name of the private library for this package.
4543 The standard distribution will put nothing in this directory.
4544 Vendors who distribute perl may wish to place their own
4545 modules in this directory with
4546 MakeMaker Makefile.PL INSTALLDIRS=vendor
4547 or equivalent. See INSTALL for details.
4549 vendorlib_stem (vendorlib.U):
4550 This variable is $vendorlibexp with any trailing version-specific component
4551 removed. The elements in inc_version_list (inc_version_list.U) can
4552 be tacked onto this variable to generate a list of directories to search.
4554 vendorlibexp (vendorlib.U):
4555 This variable is the ~name expanded version of vendorlib, so that you
4556 may use it directly in Makefiles or shell scripts.
4558 vendorprefix (vendorprefix.U):
4559 This variable holds the full absolute path of the directory below
4560 which the vendor will install add-on packages.
4561 See INSTALL for usage and examples.
4563 vendorprefixexp (vendorprefix.U):
4564 This variable holds the full absolute path of the directory below
4565 which the vendor will install add-on packages. Derived from vendorprefix.
4567 version (patchlevel.U):
4568 The full version number of this package, such as 5.6.1 (or 5_6_1).
4569 This combines revision, patchlevel, and subversion to get the
4570 full version number, including any possible subversions.
4571 This is suitable for use as a directory name, and hence is
4572 filesystem dependent.
4574 version_patchlevel_string (patchlevel.U):
4575 This is a string combining version, subversion and
4576 perl_patchlevel (if perl_patchlevel is non-zero).
4577 It is typically something like
4578 'version 7 subversion 1' or
4579 'version 7 subversion 1 patchlevel 11224'
4580 It is computed here to avoid duplication of code in myconfig.SH
4583 versiononly (versiononly.U):
4584 If set, this symbol indicates that only the version-specific
4585 components of a perl installation should be installed.
4586 This may be useful for making a test installation of a new
4587 version without disturbing the existing installation.
4588 Setting versiononly is equivalent to setting installperl's -v option.
4589 In particular, the non-versioned scripts and programs such as
4590 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4591 (see INSTALL for a more complete list). Nor are the man
4593 Usually, this is undef.
4596 This variable is defined but not used by Configure.
4597 The value is a plain '' and is not useful.
4599 voidflags (voidflags.U):
4600 This variable contains the eventual value of the VOIDFLAGS symbol,
4601 which indicates how much support of the void type is given by this
4602 compiler. See VOIDFLAGS for more info.
4605 This variable holds extra path (space-separated) used to find
4606 libraries on this platform, for example CPU-specific libraries
4607 (on multi-CPU platforms) may be listed here.
4609 xs_apiversion (xs_apiversion.U):
4610 This variable contains the version of the oldest perl binary
4611 compatible with the present perl. perl.c:incpush() and
4612 lib/lib.pm will automatically search in $sitearch for older
4613 directories across major versions back to xs_apiversion.
4614 This is only useful if you have a perl library directory tree
4615 structured like the default one.
4616 See INSTALL for how this works.
4617 The versioned site_perl directory was introduced in 5.005,
4618 so that is the lowest possible value.
4619 Since this can depend on compile time options
4620 it is set by Configure. Other non-default sources
4621 of potential incompatibility, such as multiplicity, threads,
4622 debugging, 64bits, sfio, etc., are not checked for currently,
4623 though in principle we could go snooping around in old
4627 This variable holds the name of the compiler compiler we
4628 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4631 This variable contains any additional yacc flags desired by the
4632 user. It is up to the Makefile to use this.
4635 This variable is defined but not used by Configure.
4636 The value is a plain '' and is not useful.
4639 This variable is used internally by Configure to determine the
4640 full pathname (if any) of the zip program. After Configure runs,
4641 the value is reset to a plain "zip" and is not useful.