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_AINTL symbol, which
485 indicates to the C program that the aintl() routine is available.
486 If copysignl is also present we can emulate modfl.
489 This variable conditionally defines the HAS_ALARM symbol, which
490 indicates to the C program that the alarm() routine is available.
492 d_archlib (archlib.U):
493 This variable conditionally defines ARCHLIB to hold the pathname
494 of architecture-dependent library files for $package. If
495 $archlib is the same as $privlib, then this is set to undef.
497 d_asctime_r (d_asctime_r.U):
498 This variable conditionally defines the HAS_ASCTIME_R symbol,
499 which indicates to the C program that the asctime_r()
500 routine is available.
503 This variable conditionally defines the HAS_ATOLF symbol, which
504 indicates to the C program that the atolf() routine is available.
507 This variable conditionally defines the HAS_ATOLL symbol, which
508 indicates to the C program that the atoll() routine is available.
510 d_attribut (d_attribut.U):
511 This variable conditionally defines HASATTRIBUTE, which
512 indicates the C compiler can check for function attributes,
513 such as printf formats.
516 This variable conditionally defines the HAS_BCMP symbol if
517 the bcmp() routine is available to compare strings.
520 This variable conditionally defines the HAS_BCOPY symbol if
521 the bcopy() routine is available to copy strings.
524 This symbol conditionally defines the symbol BSD when running on a
527 d_bsdgetpgrp (d_getpgrp.U):
528 This variable conditionally defines USE_BSD_GETPGRP if
529 getpgrp needs one arguments whereas USG one needs none.
531 d_bsdsetpgrp (d_setpgrp.U):
532 This variable conditionally defines USE_BSD_SETPGRP if
533 setpgrp needs two arguments whereas USG one needs none.
534 See also d_setpgid for a POSIX interface.
537 This variable conditionally defines the HAS_BZERO symbol if
538 the bzero() routine is available to set memory to 0.
540 d_casti32 (d_casti32.U):
541 This variable conditionally defines CASTI32, which indicates
542 whether the C compiler can cast large floats to 32-bit ints.
544 d_castneg (d_castneg.U):
545 This variable conditionally defines CASTNEG, which indicates
546 wether the C compiler can cast negative float to unsigned.
548 d_charvspr (d_vprintf.U):
549 This variable conditionally defines CHARVSPRINTF if this system
550 has vsprintf returning type (char*). The trend seems to be to
551 declare it as "int vsprintf()".
554 This variable conditionally defines the HAS_CHOWN symbol, which
555 indicates to the C program that the chown() routine is available.
557 d_chroot (d_chroot.U):
558 This variable conditionally defines the HAS_CHROOT symbol, which
559 indicates to the C program that the chroot() routine is available.
561 d_chsize (d_chsize.U):
562 This variable conditionally defines the CHSIZE symbol, which
563 indicates to the C program that the chsize() routine is available
564 to truncate files. You might need a -lx to get this routine.
567 This variable conditionally defines the HAS_CLASS symbol, which
568 indicates to the C program that the class() routine is available.
570 d_closedir (d_closedir.U):
571 This variable conditionally defines HAS_CLOSEDIR if closedir() is
574 d_cmsghdr_s (d_cmsghdr_s.U):
575 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
576 which indicates that the struct cmsghdr is supported.
579 This variable conditionally defines the HASCONST symbol, which
580 indicates to the C program that this C compiler knows about the
583 d_copysignl (d_copysignl.U):
584 This variable conditionally defines the HAS_COPYSIGNL symbol, which
585 indicates to the C program that the copysignl() routine is available.
586 If aintl is also present we can emulate modfl.
589 This variable conditionally defines the CRYPT symbol, which
590 indicates to the C program that the crypt() routine is available
591 to encrypt passwords and the like.
593 d_crypt_r (d_crypt_r.U):
594 This variable conditionally defines the HAS_CRYPT_R symbol,
595 which indicates to the C program that the crypt_r()
596 routine is available.
599 This variable conditionally defines the CSH symbol, which
600 indicates to the C program that the C-shell exists.
602 d_ctermid_r (d_ctermid_r.U):
603 This variable conditionally defines the HAS_CTERMID_R symbol,
604 which indicates to the C program that the ctermid_r()
605 routine is available.
607 d_ctime_r (d_ctime_r.U):
608 This variable conditionally defines the HAS_CTIME_R symbol,
609 which indicates to the C program that the ctime_r()
610 routine is available.
612 d_cuserid (d_cuserid.U):
613 This variable conditionally defines the HAS_CUSERID symbol, which
614 indicates to the C program that the cuserid() routine is available
615 to get character login names.
617 d_dbl_dig (d_dbl_dig.U):
618 This variable conditionally defines d_dbl_dig if this system's
619 header files provide DBL_DIG, which is the number of significant
620 digits in a double precision number.
622 d_dbminitproto (d_dbminitproto.U):
623 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
624 which indicates to the C program that the system provides
625 a prototype for the dbminit() function. Otherwise, it is
626 up to the program to supply one.
628 d_difftime (d_difftime.U):
629 This variable conditionally defines the HAS_DIFFTIME symbol, which
630 indicates to the C program that the difftime() routine is available.
633 This variable conditionally defines the HAS_DIRFD constant,
634 which indicates to the C program that dirfd() is available
635 to return the file descriptor of a directory stream.
637 d_dirnamlen (i_dirent.U):
638 This variable conditionally defines DIRNAMLEN, which indicates
639 to the C program that the length of directory entry names is
640 provided by a d_namelen field.
642 d_dlerror (d_dlerror.U):
643 This variable conditionally defines the HAS_DLERROR symbol, which
644 indicates to the C program that the dlerror() routine is available.
646 d_dlopen (d_dlopen.U):
647 This variable conditionally defines the HAS_DLOPEN symbol, which
648 indicates to the C program that the dlopen() routine is available.
650 d_dlsymun (d_dlsymun.U):
651 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
652 indicates that we need to prepend an underscore to the symbol
653 name before calling dlsym().
655 d_dosuid (d_dosuid.U):
656 This variable conditionally defines the symbol DOSUID, which
657 tells the C program that it should insert setuid emulation code
658 on hosts which have setuid #! scripts disabled.
660 d_drand48_r (d_drand48_r.U):
661 This variable conditionally defines the HAS_DRAND48_R symbol,
662 which indicates to the C program that the drand48_r()
663 routine is available.
665 d_drand48proto (d_drand48proto.U):
666 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
667 which indicates to the C program that the system provides
668 a prototype for the drand48() function. Otherwise, it is
669 up to the program to supply one.
672 This variable conditionally defines HAS_DUP2 if dup2() is
673 available to duplicate file descriptors.
675 d_eaccess (d_eaccess.U):
676 This variable conditionally defines the HAS_EACCESS symbol, which
677 indicates to the C program that the eaccess() routine is available.
679 d_endgrent (d_endgrent.U):
680 This variable conditionally defines the HAS_ENDGRENT symbol, which
681 indicates to the C program that the endgrent() routine is available
682 for sequential access of the group database.
684 d_endgrent_r (d_endgrent_r.U):
685 This variable conditionally defines the HAS_ENDGRENT_R symbol,
686 which indicates to the C program that the endgrent_r()
687 routine is available.
689 d_endhent (d_endhent.U):
690 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
691 available to close whatever was being used for host queries.
693 d_endhostent_r (d_endhostent_r.U):
694 This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
695 which indicates to the C program that the endhostent_r()
696 routine is available.
698 d_endnent (d_endnent.U):
699 This variable conditionally defines HAS_ENDNETENT if endnetent() is
700 available to close whatever was being used for network queries.
702 d_endnetent_r (d_endnetent_r.U):
703 This variable conditionally defines the HAS_ENDNETENT_R symbol,
704 which indicates to the C program that the endnetent_r()
705 routine is available.
707 d_endpent (d_endpent.U):
708 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
709 available to close whatever was being used for protocol queries.
711 d_endprotoent_r (d_endprotoent_r.U):
712 This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
713 which indicates to the C program that the endprotoent_r()
714 routine is available.
716 d_endpwent (d_endpwent.U):
717 This variable conditionally defines the HAS_ENDPWENT symbol, which
718 indicates to the C program that the endpwent() routine is available
719 for sequential access of the passwd database.
721 d_endpwent_r (d_endpwent_r.U):
722 This variable conditionally defines the HAS_ENDPWENT_R symbol,
723 which indicates to the C program that the endpwent_r()
724 routine is available.
726 d_endsent (d_endsent.U):
727 This variable conditionally defines HAS_ENDSERVENT if endservent() is
728 available to close whatever was being used for service queries.
730 d_endservent_r (d_endservent_r.U):
731 This variable conditionally defines the HAS_ENDSERVENT_R symbol,
732 which indicates to the C program that the endservent_r()
733 routine is available.
735 d_eofnblk (nblock_io.U):
736 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
737 when reading from a non-blocking I/O source.
740 This variable conditionally defines the symbols EUNICE and VAX, which
741 alerts the C program that it must deal with ideosyncracies of VMS.
743 d_fchdir (d_fchdir.U):
744 This variable conditionally defines the HAS_FCHDIR symbol, which
745 indicates to the C program that the fchdir() routine is available.
747 d_fchmod (d_fchmod.U):
748 This variable conditionally defines the HAS_FCHMOD symbol, which
749 indicates to the C program that the fchmod() routine is available
750 to change mode of opened files.
752 d_fchown (d_fchown.U):
753 This variable conditionally defines the HAS_FCHOWN symbol, which
754 indicates to the C program that the fchown() routine is available
755 to change ownership of opened files.
758 This variable conditionally defines the HAS_FCNTL symbol, and indicates
759 whether the fcntl() function exists
761 d_fcntl_can_lock (d_fcntl_can_lock.U):
762 This variable conditionally defines the FCNTL_CAN_LOCK symbol
763 and indicates whether file locking with fcntl() works.
765 d_fd_macros (d_fd_set.U):
766 This variable contains the eventual value of the HAS_FD_MACROS symbol,
767 which indicates if your C compiler knows about the macros which
768 manipulate an fd_set.
770 d_fd_set (d_fd_set.U):
771 This variable contains the eventual value of the HAS_FD_SET symbol,
772 which indicates if your C compiler knows about the fd_set typedef.
774 d_fds_bits (d_fd_set.U):
775 This variable contains the eventual value of the HAS_FDS_BITS symbol,
776 which indicates if your fd_set typedef contains the fds_bits member.
777 If you have an fd_set typedef, but the dweebs who installed it did
778 a half-fast job and neglected to provide the macros to manipulate
779 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
781 d_fgetpos (d_fgetpos.U):
782 This variable conditionally defines HAS_FGETPOS if fgetpos() is
783 available to get the file position indicator.
785 d_finite (d_finite.U):
786 This variable conditionally defines the HAS_FINITE symbol, which
787 indicates to the C program that the finite() routine is available.
789 d_finitel (d_finitel.U):
790 This variable conditionally defines the HAS_FINITEL symbol, which
791 indicates to the C program that the finitel() routine is available.
793 d_flexfnam (d_flexfnam.U):
794 This variable conditionally defines the FLEXFILENAMES symbol, which
795 indicates that the system supports filenames longer than 14 characters.
798 This variable conditionally defines HAS_FLOCK if flock() is
799 available to do file locking.
801 d_flockproto (d_flockproto.U):
802 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
803 which indicates to the C program that the system provides
804 a prototype for the flock() function. Otherwise, it is
805 up to the program to supply one.
808 This variable conditionally defines the HAS_FORK symbol, which
809 indicates to the C program that the fork() routine is available.
811 d_fp_class (d_fp_class.U):
812 This variable conditionally defines the HAS_FP_CLASS symbol, which
813 indicates to the C program that the fp_class() routine is available.
815 d_fpathconf (d_pathconf.U):
816 This variable conditionally defines the HAS_FPATHCONF symbol, which
817 indicates to the C program that the pathconf() routine is available
818 to determine file-system related limits and options associated
819 with a given open file descriptor.
821 d_fpclass (d_fpclass.U):
822 This variable conditionally defines the HAS_FPCLASS symbol, which
823 indicates to the C program that the fpclass() routine is available.
825 d_fpclassify (d_fpclassify.U):
826 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
827 indicates to the C program that the fpclassify() routine is available.
829 d_fpclassl (d_fpclassl.U):
830 This variable conditionally defines the HAS_FPCLASSL symbol, which
831 indicates to the C program that the fpclassl() routine is available.
833 d_fpos64_t (d_fpos64_t.U):
834 This symbol will be defined if the C compiler supports fpos64_t.
836 d_frexpl (d_frexpl.U):
837 This variable conditionally defines the HAS_FREXPL symbol, which
838 indicates to the C program that the frexpl() routine is available.
840 d_fs_data_s (d_fs_data_s.U):
841 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
842 which indicates that the struct fs_data is supported.
844 d_fseeko (d_fseeko.U):
845 This variable conditionally defines the HAS_FSEEKO symbol, which
846 indicates to the C program that the fseeko() routine is available.
848 d_fsetpos (d_fsetpos.U):
849 This variable conditionally defines HAS_FSETPOS if fsetpos() is
850 available to set the file position indicator.
852 d_fstatfs (d_fstatfs.U):
853 This variable conditionally defines the HAS_FSTATFS symbol, which
854 indicates to the C program that the fstatfs() routine is available.
856 d_fstatvfs (d_statvfs.U):
857 This variable conditionally defines the HAS_FSTATVFS symbol, which
858 indicates to the C program that the fstatvfs() routine is available.
861 This variable conditionally defines the HAS_FSYNC symbol, which
862 indicates to the C program that the fsync() routine is available.
864 d_ftello (d_ftello.U):
865 This variable conditionally defines the HAS_FTELLO symbol, which
866 indicates to the C program that the ftello() routine is available.
869 This variable conditionally defines the HAS_FTIME symbol, which indicates
870 that the ftime() routine exists. The ftime() routine is basically
871 a sub-second accuracy clock.
873 d_getcwd (d_getcwd.U):
874 This variable conditionally defines the HAS_GETCWD symbol, which
875 indicates to the C program that the getcwd() routine is available
876 to get the current working directory.
878 d_getespwnam (d_getespwnam.U):
879 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
880 available to retrieve enchanced (shadow) password entries by name.
882 d_getfsstat (d_getfsstat.U):
883 This variable conditionally defines the HAS_GETFSSTAT symbol, which
884 indicates to the C program that the getfsstat() routine is available.
886 d_getgrent (d_getgrent.U):
887 This variable conditionally defines the HAS_GETGRENT symbol, which
888 indicates to the C program that the getgrent() routine is available
889 for sequential access of the group database.
891 d_getgrent_r (d_getgrent_r.U):
892 This variable conditionally defines the HAS_GETGRENT_R symbol,
893 which indicates to the C program that the getgrent_r()
894 routine is available.
896 d_getgrgid_r (d_getgrgid_r.U):
897 This variable conditionally defines the HAS_GETGRGID_R symbol,
898 which indicates to the C program that the getgrgid_r()
899 routine is available.
901 d_getgrnam_r (d_getgrnam_r.U):
902 This variable conditionally defines the HAS_GETGRNAM_R symbol,
903 which indicates to the C program that the getgrnam_r()
904 routine is available.
906 d_getgrps (d_getgrps.U):
907 This variable conditionally defines the HAS_GETGROUPS symbol, which
908 indicates to the C program that the getgroups() routine is available
909 to get the list of process groups.
911 d_gethbyaddr (d_gethbyad.U):
912 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
913 indicates to the C program that the gethostbyaddr() routine is available
914 to look up hosts by their IP addresses.
916 d_gethbyname (d_gethbynm.U):
917 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
918 indicates to the C program that the gethostbyname() routine is available
919 to look up host names in some data base or other.
921 d_gethent (d_gethent.U):
922 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
923 available to look up host names in some data base or another.
925 d_gethname (d_gethname.U):
926 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
927 indicates to the C program that the gethostname() routine may be
928 used to derive the host name.
930 d_gethostbyaddr_r (d_gethostbyaddr_r.U):
931 This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
932 which indicates to the C program that the gethostbyaddr_r()
933 routine is available.
935 d_gethostbyname_r (d_gethostbyname_r.U):
936 This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
937 which indicates to the C program that the gethostbyname_r()
938 routine is available.
940 d_gethostent_r (d_gethostent_r.U):
941 This variable conditionally defines the HAS_GETHOSTENT_R symbol,
942 which indicates to the C program that the gethostent_r()
943 routine is available.
945 d_gethostprotos (d_gethostprotos.U):
946 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
947 which indicates to the C program that <netdb.h> supplies
948 prototypes for the various gethost*() functions.
949 See also netdbtype.U for probing for various netdb types.
951 d_getitimer (d_getitimer.U):
952 This variable conditionally defines the HAS_GETITIMER symbol, which
953 indicates to the C program that the getitimer() routine is available.
955 d_getlogin (d_getlogin.U):
956 This variable conditionally defines the HAS_GETLOGIN symbol, which
957 indicates to the C program that the getlogin() routine is available
958 to get the login name.
960 d_getlogin_r (d_getlogin_r.U):
961 This variable conditionally defines the HAS_GETLOGIN_R symbol,
962 which indicates to the C program that the getlogin_r()
963 routine is available.
965 d_getmnt (d_getmnt.U):
966 This variable conditionally defines the HAS_GETMNT symbol, which
967 indicates to the C program that the getmnt() routine is available
968 to retrieve one or more mount info blocks by filename.
970 d_getmntent (d_getmntent.U):
971 This variable conditionally defines the HAS_GETMNTENT symbol, which
972 indicates to the C program that the getmntent() routine is available
973 to iterate through mounted files to get their mount info.
975 d_getnbyaddr (d_getnbyad.U):
976 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
977 indicates to the C program that the getnetbyaddr() routine is available
978 to look up networks by their IP addresses.
980 d_getnbyname (d_getnbynm.U):
981 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
982 indicates to the C program that the getnetbyname() routine is available
983 to look up networks by their names.
985 d_getnent (d_getnent.U):
986 This variable conditionally defines HAS_GETNETENT if getnetent() is
987 available to look up network names in some data base or another.
989 d_getnetbyaddr_r (d_getnetbyaddr_r.U):
990 This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
991 which indicates to the C program that the getnetbyaddr_r()
992 routine is available.
994 d_getnetbyname_r (d_getnetbyname_r.U):
995 This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
996 which indicates to the C program that the getnetbyname_r()
997 routine is available.
999 d_getnetent_r (d_getnetent_r.U):
1000 This variable conditionally defines the HAS_GETNETENT_R symbol,
1001 which indicates to the C program that the getnetent_r()
1002 routine is available.
1004 d_getnetprotos (d_getnetprotos.U):
1005 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
1006 which indicates to the C program that <netdb.h> supplies
1007 prototypes for the various getnet*() functions.
1008 See also netdbtype.U for probing for various netdb types.
1010 d_getpagsz (d_getpagsz.U):
1011 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
1012 is available to get the system page size.
1014 d_getpbyname (d_getprotby.U):
1015 This variable conditionally defines the HAS_GETPROTOBYNAME
1016 symbol, which indicates to the C program that the
1017 getprotobyname() routine is available to look up protocols
1020 d_getpbynumber (d_getprotby.U):
1021 This variable conditionally defines the HAS_GETPROTOBYNUMBER
1022 symbol, which indicates to the C program that the
1023 getprotobynumber() routine is available to look up protocols
1026 d_getpent (d_getpent.U):
1027 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
1028 available to look up protocols in some data base or another.
1030 d_getpgid (d_getpgid.U):
1031 This variable conditionally defines the HAS_GETPGID symbol, which
1032 indicates to the C program that the getpgid(pid) function
1033 is available to get the process group id.
1035 d_getpgrp2 (d_getpgrp2.U):
1036 This variable conditionally defines the HAS_GETPGRP2 symbol, which
1037 indicates to the C program that the getpgrp2() (as in DG/UX) routine
1038 is available to get the current process group.
1040 d_getpgrp (d_getpgrp.U):
1041 This variable conditionally defines HAS_GETPGRP if getpgrp() is
1042 available to get the current process group.
1044 d_getppid (d_getppid.U):
1045 This variable conditionally defines the HAS_GETPPID symbol, which
1046 indicates to the C program that the getppid() routine is available
1047 to get the parent process ID.
1049 d_getprior (d_getprior.U):
1050 This variable conditionally defines HAS_GETPRIORITY if getpriority()
1051 is available to get a process's priority.
1053 d_getprotobyname_r (d_getprotobyname_r.U):
1054 This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
1055 which indicates to the C program that the getprotobyname_r()
1056 routine is available.
1058 d_getprotobynumber_r (d_getprotobynumber_r.U):
1059 This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
1060 which indicates to the C program that the getprotobynumber_r()
1061 routine is available.
1063 d_getprotoent_r (d_getprotoent_r.U):
1064 This variable conditionally defines the HAS_GETPROTOENT_R symbol,
1065 which indicates to the C program that the getprotoent_r()
1066 routine is available.
1068 d_getprotoprotos (d_getprotoprotos.U):
1069 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
1070 which indicates to the C program that <netdb.h> supplies
1071 prototypes for the various getproto*() functions.
1072 See also netdbtype.U for probing for various netdb types.
1074 d_getprpwnam (d_getprpwnam.U):
1075 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
1076 available to retrieve protected (shadow) password entries by name.
1078 d_getpwent (d_getpwent.U):
1079 This variable conditionally defines the HAS_GETPWENT symbol, which
1080 indicates to the C program that the getpwent() routine is available
1081 for sequential access of the passwd database.
1083 d_getpwent_r (d_getpwent_r.U):
1084 This variable conditionally defines the HAS_GETPWENT_R symbol,
1085 which indicates to the C program that the getpwent_r()
1086 routine is available.
1088 d_getpwnam_r (d_getpwnam_r.U):
1089 This variable conditionally defines the HAS_GETPWNAM_R symbol,
1090 which indicates to the C program that the getpwnam_r()
1091 routine is available.
1093 d_getpwuid_r (d_getpwuid_r.U):
1094 This variable conditionally defines the HAS_GETPWUID_R symbol,
1095 which indicates to the C program that the getpwuid_r()
1096 routine is available.
1098 d_getsbyname (d_getsrvby.U):
1099 This variable conditionally defines the HAS_GETSERVBYNAME
1100 symbol, which indicates to the C program that the
1101 getservbyname() routine is available to look up services
1104 d_getsbyport (d_getsrvby.U):
1105 This variable conditionally defines the HAS_GETSERVBYPORT
1106 symbol, which indicates to the C program that the
1107 getservbyport() routine is available to look up services
1110 d_getsent (d_getsent.U):
1111 This variable conditionally defines HAS_GETSERVENT if getservent() is
1112 available to look up network services in some data base or another.
1114 d_getservbyname_r (d_getservbyname_r.U):
1115 This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
1116 which indicates to the C program that the getservbyname_r()
1117 routine is available.
1119 d_getservbyport_r (d_getservbyport_r.U):
1120 This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
1121 which indicates to the C program that the getservbyport_r()
1122 routine is available.
1124 d_getservent_r (d_getservent_r.U):
1125 This variable conditionally defines the HAS_GETSERVENT_R symbol,
1126 which indicates to the C program that the getservent_r()
1127 routine is available.
1129 d_getservprotos (d_getservprotos.U):
1130 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
1131 which indicates to the C program that <netdb.h> supplies
1132 prototypes for the various getserv*() functions.
1133 See also netdbtype.U for probing for various netdb types.
1135 d_getspnam (d_getspnam.U):
1136 This variable conditionally defines HAS_GETSPNAM if getspnam() is
1137 available to retrieve SysV shadow password entries by name.
1139 d_getspnam_r (d_getspnam_r.U):
1140 This variable conditionally defines the HAS_GETSPNAM_R symbol,
1141 which indicates to the C program that the getspnam_r()
1142 routine is available.
1144 d_gettimeod (d_ftime.U):
1145 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
1146 indicates that the gettimeofday() system call exists (to obtain a
1147 sub-second accuracy clock). You should probably include <sys/resource.h>.
1149 d_gmtime_r (d_gmtime_r.U):
1150 This variable conditionally defines the HAS_GMTIME_R symbol,
1151 which indicates to the C program that the gmtime_r()
1152 routine is available.
1154 d_gnulibc (d_gnulibc.U):
1155 Defined if we're dealing with the GNU C Library.
1157 d_grpasswd (i_grp.U):
1158 This variable conditionally defines GRPASSWD, which indicates
1159 that struct group in <grp.h> contains gr_passwd.
1161 d_hasmntopt (d_hasmntopt.U):
1162 This variable conditionally defines the HAS_HASMNTOPT symbol, which
1163 indicates to the C program that the hasmntopt() routine is available
1164 to query the mount options of file systems.
1166 d_htonl (d_htonl.U):
1167 This variable conditionally defines HAS_HTONL if htonl() and its
1168 friends are available to do network order byte swapping.
1170 d_ilogbl (d_ilogbl.U):
1171 This variable conditionally defines the HAS_ILOGBL symbol, which
1172 indicates to the C program that the ilogbl() routine is available.
1173 If scalbnl is also present we can emulate frexpl.
1175 d_index (d_strchr.U):
1176 This variable conditionally defines HAS_INDEX if index() and
1177 rindex() are available for string searching.
1179 d_inetaton (d_inetaton.U):
1180 This variable conditionally defines the HAS_INET_ATON symbol, which
1181 indicates to the C program that the inet_aton() function is available
1182 to parse IP address "dotted-quad" strings.
1184 d_int64_t (d_int64_t.U):
1185 This symbol will be defined if the C compiler supports int64_t.
1187 d_isascii (d_isascii.U):
1188 This variable conditionally defines the HAS_ISASCII constant,
1189 which indicates to the C program that isascii() is available.
1191 d_isfinite (d_isfinite.U):
1192 This variable conditionally defines the HAS_ISFINITE symbol, which
1193 indicates to the C program that the isfinite() routine is available.
1195 d_isinf (d_isinf.U):
1196 This variable conditionally defines the HAS_ISINF symbol, which
1197 indicates to the C program that the isinf() routine is available.
1199 d_isnan (d_isnan.U):
1200 This variable conditionally defines the HAS_ISNAN symbol, which
1201 indicates to the C program that the isnan() routine is available.
1203 d_isnanl (d_isnanl.U):
1204 This variable conditionally defines the HAS_ISNANL symbol, which
1205 indicates to the C program that the isnanl() routine is available.
1207 d_killpg (d_killpg.U):
1208 This variable conditionally defines the HAS_KILLPG symbol, which
1209 indicates to the C program that the killpg() routine is available
1210 to kill process groups.
1212 d_lchown (d_lchown.U):
1213 This variable conditionally defines the HAS_LCHOWN symbol, which
1214 indicates to the C program that the lchown() routine is available
1215 to operate on a symbolic link (instead of following the link).
1217 d_ldbl_dig (d_ldbl_dig.U):
1218 This variable conditionally defines d_ldbl_dig if this system's
1219 header files provide LDBL_DIG, which is the number of significant
1220 digits in a long double precision number.
1223 This variable conditionally defines HAS_LINK if link() is
1224 available to create hard links.
1226 d_localtime_r (d_localtime_r.U):
1227 This variable conditionally defines the HAS_LOCALTIME_R symbol,
1228 which indicates to the C program that the localtime_r()
1229 routine is available.
1231 d_locconv (d_locconv.U):
1232 This variable conditionally defines HAS_LOCALECONV if localeconv() is
1233 available for numeric and monetary formatting conventions.
1235 d_lockf (d_lockf.U):
1236 This variable conditionally defines HAS_LOCKF if lockf() is
1237 available to do file locking.
1239 d_longdbl (d_longdbl.U):
1240 This variable conditionally defines HAS_LONG_DOUBLE if
1241 the long double type is supported.
1243 d_longlong (d_longlong.U):
1244 This variable conditionally defines HAS_LONG_LONG if
1245 the long long type is supported.
1247 d_lseekproto (d_lseekproto.U):
1248 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
1249 which indicates to the C program that the system provides
1250 a prototype for the lseek() function. Otherwise, it is
1251 up to the program to supply one.
1253 d_lstat (d_lstat.U):
1254 This variable conditionally defines HAS_LSTAT if lstat() is
1255 available to do file stats on symbolic links.
1257 d_madvise (d_madvise.U):
1258 This variable conditionally defines HAS_MADVISE if madvise() is
1259 available to map a file into memory.
1261 d_mblen (d_mblen.U):
1262 This variable conditionally defines the HAS_MBLEN symbol, which
1263 indicates to the C program that the mblen() routine is available
1264 to find the number of bytes in a multibye character.
1266 d_mbstowcs (d_mbstowcs.U):
1267 This variable conditionally defines the HAS_MBSTOWCS symbol, which
1268 indicates to the C program that the mbstowcs() routine is available
1269 to convert a multibyte string into a wide character string.
1271 d_mbtowc (d_mbtowc.U):
1272 This variable conditionally defines the HAS_MBTOWC symbol, which
1273 indicates to the C program that the mbtowc() routine is available
1274 to convert multibyte to a wide character.
1276 d_memchr (d_memchr.U):
1277 This variable conditionally defines the HAS_MEMCHR symbol, which
1278 indicates to the C program that the memchr() routine is available
1279 to locate characters within a C string.
1281 d_memcmp (d_memcmp.U):
1282 This variable conditionally defines the HAS_MEMCMP symbol, which
1283 indicates to the C program that the memcmp() routine is available
1284 to compare blocks of memory.
1286 d_memcpy (d_memcpy.U):
1287 This variable conditionally defines the HAS_MEMCPY symbol, which
1288 indicates to the C program that the memcpy() routine is available
1289 to copy blocks of memory.
1291 d_memmove (d_memmove.U):
1292 This variable conditionally defines the HAS_MEMMOVE symbol, which
1293 indicates to the C program that the memmove() routine is available
1294 to copy potentatially overlapping blocks of memory.
1296 d_memset (d_memset.U):
1297 This variable conditionally defines the HAS_MEMSET symbol, which
1298 indicates to the C program that the memset() routine is available
1299 to set blocks of memory.
1301 d_mkdir (d_mkdir.U):
1302 This variable conditionally defines the HAS_MKDIR symbol, which
1303 indicates to the C program that the mkdir() routine is available
1304 to create directories..
1306 d_mkdtemp (d_mkdtemp.U):
1307 This variable conditionally defines the HAS_MKDTEMP symbol, which
1308 indicates to the C program that the mkdtemp() routine is available
1309 to exclusively create a uniquely named temporary directory.
1311 d_mkfifo (d_mkfifo.U):
1312 This variable conditionally defines the HAS_MKFIFO symbol, which
1313 indicates to the C program that the mkfifo() routine is available.
1315 d_mkstemp (d_mkstemp.U):
1316 This variable conditionally defines the HAS_MKSTEMP symbol, which
1317 indicates to the C program that the mkstemp() routine is available
1318 to exclusively create and open a uniquely named temporary file.
1320 d_mkstemps (d_mkstemps.U):
1321 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1322 indicates to the C program that the mkstemps() routine is available
1323 to exclusively create and open a uniquely named (with a suffix)
1326 d_mktime (d_mktime.U):
1327 This variable conditionally defines the HAS_MKTIME symbol, which
1328 indicates to the C program that the mktime() routine is available.
1331 This variable conditionally defines HAS_MMAP if mmap() is
1332 available to map a file into memory.
1334 d_modfl (d_modfl.U):
1335 This variable conditionally defines the HAS_MODFL symbol, which
1336 indicates to the C program that the modfl() routine is available.
1338 d_modfl_pow32_bug (d_modfl.U):
1339 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1340 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1341 For example from 4294967303.150000 one would get 4294967302.000000
1342 and 1.150000. The bug has been seen in certain versions of glibc,
1343 release 2.2.2 is known to be okay.
1345 d_modflproto (d_modfl.U):
1346 This symbol, if defined, indicates that the system provides
1347 a prototype for the modfl() function. Otherwise, it is up
1348 to the program to supply one. C99 says it should be
1349 long double modfl(long double, long double *);
1351 d_mprotect (d_mprotect.U):
1352 This variable conditionally defines HAS_MPROTECT if mprotect() is
1353 available to modify the access protection of a memory mapped file.
1356 This variable conditionally defines the HAS_MSG symbol, which
1357 indicates that the entire msg*(2) library is present.
1359 d_msg_ctrunc (d_socket.U):
1360 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1361 which indicates that the MSG_CTRUNC is available. #ifdef is
1362 not enough because it may be an enum, glibc has been known to do this.
1364 d_msg_dontroute (d_socket.U):
1365 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1366 which indicates that the MSG_DONTROUTE is available. #ifdef is
1367 not enough because it may be an enum, glibc has been known to do this.
1369 d_msg_oob (d_socket.U):
1370 This variable conditionally defines the HAS_MSG_OOB symbol,
1371 which indicates that the MSG_OOB is available. #ifdef is
1372 not enough because it may be an enum, glibc has been known to do this.
1374 d_msg_peek (d_socket.U):
1375 This variable conditionally defines the HAS_MSG_PEEK symbol,
1376 which indicates that the MSG_PEEK is available. #ifdef is
1377 not enough because it may be an enum, glibc has been known to do this.
1379 d_msg_proxy (d_socket.U):
1380 This variable conditionally defines the HAS_MSG_PROXY symbol,
1381 which indicates that the MSG_PROXY is available. #ifdef is
1382 not enough because it may be an enum, glibc has been known to do this.
1384 d_msgctl (d_msgctl.U):
1385 This variable conditionally defines the HAS_MSGCTL symbol, which
1386 indicates to the C program that the msgctl() routine is available.
1388 d_msgget (d_msgget.U):
1389 This variable conditionally defines the HAS_MSGGET symbol, which
1390 indicates to the C program that the msgget() routine is available.
1392 d_msghdr_s (d_msghdr_s.U):
1393 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1394 which indicates that the struct msghdr is supported.
1396 d_msgrcv (d_msgrcv.U):
1397 This variable conditionally defines the HAS_MSGRCV symbol, which
1398 indicates to the C program that the msgrcv() routine is available.
1400 d_msgsnd (d_msgsnd.U):
1401 This variable conditionally defines the HAS_MSGSND symbol, which
1402 indicates to the C program that the msgsnd() routine is available.
1404 d_msync (d_msync.U):
1405 This variable conditionally defines HAS_MSYNC if msync() is
1406 available to synchronize a mapped file.
1408 d_munmap (d_munmap.U):
1409 This variable conditionally defines HAS_MUNMAP if munmap() is
1410 available to unmap a region mapped by mmap().
1412 d_mymalloc (mallocsrc.U):
1413 This variable conditionally defines MYMALLOC in case other parts
1414 of the source want to take special action if MYMALLOC is used.
1415 This may include different sorts of profiling or error detection.
1417 d_nanosleep (d_nanosleep.U):
1418 This variable conditionally defines HAS_NANOSLEEP
1419 if nanosleep() is available to sleep with 1E-9 sec accuracy.
1422 This variable conditionally defines the HAS_NICE symbol, which
1423 indicates to the C program that the nice() routine is available.
1425 d_nl_langinfo (d_nl_langinfo.U):
1426 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1427 indicates to the C program that the nl_langinfo() routine is available.
1429 d_nv_preserves_uv (perlxv.U):
1430 This variable indicates whether a variable of type nvtype
1431 can preserve all the bits a variable of type uvtype.
1433 d_off64_t (d_off64_t.U):
1434 This symbol will be defined if the C compiler supports off64_t.
1436 d_old_pthread_create_joinable (d_pthrattrj.U):
1437 This variable conditionally defines pthread_create_joinable.
1438 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1440 d_oldpthreads (usethreads.U):
1441 This variable conditionally defines the OLD_PTHREADS_API symbol,
1442 and indicates that Perl should be built to use the old
1443 draft POSIX threads API. This is only potentially meaningful if
1446 d_oldsock (d_socket.U):
1447 This variable conditionally defines the OLDSOCKET symbol, which
1448 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1450 d_open3 (d_open3.U):
1451 This variable conditionally defines the HAS_OPEN3 manifest constant,
1452 which indicates to the C program that the 3 argument version of
1453 the open(2) function is available.
1455 d_pathconf (d_pathconf.U):
1456 This variable conditionally defines the HAS_PATHCONF symbol, which
1457 indicates to the C program that the pathconf() routine is available
1458 to determine file-system related limits and options associated
1459 with a given filename.
1461 d_pause (d_pause.U):
1462 This variable conditionally defines the HAS_PAUSE symbol, which
1463 indicates to the C program that the pause() routine is available
1464 to suspend a process until a signal is received.
1466 d_perl_otherlibdirs (otherlibdirs.U):
1467 This variable conditionally defines PERL_OTHERLIBDIRS, which
1468 contains a colon-separated set of paths for the perl binary to
1469 include in @INC. See also otherlibdirs.
1471 d_phostname (d_gethname.U):
1472 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1473 contains the shell command which, when fed to popen(), may be
1474 used to derive the host name.
1477 This variable conditionally defines the HAS_PIPE symbol, which
1478 indicates to the C program that the pipe() routine is available
1479 to create an inter-process channel.
1482 This variable conditionally defines the HAS_POLL symbol, which
1483 indicates to the C program that the poll() routine is available
1484 to poll active file descriptors.
1486 d_portable (d_portable.U):
1487 This variable conditionally defines the PORTABLE symbol, which
1488 indicates to the C program that it should not assume that it is
1489 running on the machine it was compiled on.
1491 d_procselfexe (d_procselfexe.U):
1492 Defined if $procselfexe is symlink to the absolute
1493 pathname of the executing program.
1495 d_pthread_atfork (d_pthread_atfork.U):
1496 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1497 which indicates to the C program that the pthread_atfork()
1498 routine is available.
1500 d_pthread_yield (d_pthread_y.U):
1501 This variable conditionally defines the HAS_PTHREAD_YIELD
1502 symbol if the pthread_yield routine is available to yield
1503 the execution of the current thread.
1506 This variable conditionally defines PWAGE, which indicates
1507 that struct passwd contains pw_age.
1509 d_pwchange (i_pwd.U):
1510 This variable conditionally defines PWCHANGE, which indicates
1511 that struct passwd contains pw_change.
1513 d_pwclass (i_pwd.U):
1514 This variable conditionally defines PWCLASS, which indicates
1515 that struct passwd contains pw_class.
1517 d_pwcomment (i_pwd.U):
1518 This variable conditionally defines PWCOMMENT, which indicates
1519 that struct passwd contains pw_comment.
1521 d_pwexpire (i_pwd.U):
1522 This variable conditionally defines PWEXPIRE, which indicates
1523 that struct passwd contains pw_expire.
1525 d_pwgecos (i_pwd.U):
1526 This variable conditionally defines PWGECOS, which indicates
1527 that struct passwd contains pw_gecos.
1529 d_pwpasswd (i_pwd.U):
1530 This variable conditionally defines PWPASSWD, which indicates
1531 that struct passwd contains pw_passwd.
1533 d_pwquota (i_pwd.U):
1534 This variable conditionally defines PWQUOTA, which indicates
1535 that struct passwd contains pw_quota.
1537 d_qgcvt (d_qgcvt.U):
1538 This variable conditionally defines the HAS_QGCVT symbol, which
1539 indicates to the C program that the qgcvt() routine is available.
1541 d_quad (quadtype.U):
1542 This variable, if defined, tells that there's a 64-bit integer type,
1545 d_random_r (d_random_r.U):
1546 This variable conditionally defines the HAS_RANDOM_R symbol,
1547 which indicates to the C program that the random_r()
1548 routine is available.
1550 d_readdir64_r (d_readdir64_r.U):
1551 This variable conditionally defines the HAS_READDIR64_R symbol,
1552 which indicates to the C program that the readdir64_r()
1553 routine is available.
1555 d_readdir (d_readdir.U):
1556 This variable conditionally defines HAS_READDIR if readdir() is
1557 available to read directory entries.
1559 d_readdir_r (d_readdir_r.U):
1560 This variable conditionally defines the HAS_READDIR_R symbol,
1561 which indicates to the C program that the readdir_r()
1562 routine is available.
1564 d_readlink (d_readlink.U):
1565 This variable conditionally defines the HAS_READLINK symbol, which
1566 indicates to the C program that the readlink() routine is available
1567 to read the value of a symbolic link.
1569 d_readv (d_readv.U):
1570 This variable conditionally defines the HAS_READV symbol, which
1571 indicates to the C program that the readv() routine is available.
1573 d_recvmsg (d_recvmsg.U):
1574 This variable conditionally defines the HAS_RECVMSG symbol, which
1575 indicates to the C program that the recvmsg() routine is available.
1577 d_rename (d_rename.U):
1578 This variable conditionally defines the HAS_RENAME symbol, which
1579 indicates to the C program that the rename() routine is available
1582 d_rewinddir (d_readdir.U):
1583 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1586 d_rmdir (d_rmdir.U):
1587 This variable conditionally defines HAS_RMDIR if rmdir() is
1588 available to remove directories.
1590 d_safebcpy (d_safebcpy.U):
1591 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1592 the bcopy() routine can do overlapping copies. Normally, you
1593 should probably use memmove().
1595 d_safemcpy (d_safemcpy.U):
1596 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1597 the memcpy() routine can do overlapping copies.
1598 For overlapping copies, memmove() should be used, if available.
1600 d_sanemcmp (d_sanemcmp.U):
1601 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1602 the memcpy() routine is available and can be used to compare relative
1603 magnitudes of chars with their high bits set.
1605 d_sbrkproto (d_sbrkproto.U):
1606 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1607 which indicates to the C program that the system provides
1608 a prototype for the sbrk() function. Otherwise, it is
1609 up to the program to supply one.
1611 d_scalbnl (d_scalbnl.U):
1612 This variable conditionally defines the HAS_SCALBNL symbol, which
1613 indicates to the C program that the scalbnl() routine is available.
1614 If ilogbl is also present we can emulate frexpl.
1616 d_sched_yield (d_pthread_y.U):
1617 This variable conditionally defines the HAS_SCHED_YIELD
1618 symbol if the sched_yield routine is available to yield
1619 the execution of the current thread.
1621 d_scm_rights (d_socket.U):
1622 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1623 which indicates that the SCM_RIGHTS is available. #ifdef is
1624 not enough because it may be an enum, glibc has been known to do this.
1626 d_seekdir (d_readdir.U):
1627 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1630 d_select (d_select.U):
1631 This variable conditionally defines HAS_SELECT if select() is
1632 available to select active file descriptors. A <sys/time.h>
1633 inclusion may be necessary for the timeout field.
1636 This variable conditionally defines the HAS_SEM symbol, which
1637 indicates that the entire sem*(2) library is present.
1639 d_semctl (d_semctl.U):
1640 This variable conditionally defines the HAS_SEMCTL symbol, which
1641 indicates to the C program that the semctl() routine is available.
1643 d_semctl_semid_ds (d_union_semun.U):
1644 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1645 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1647 d_semctl_semun (d_union_semun.U):
1648 This variable conditionally defines USE_SEMCTL_SEMUN, which
1649 indicates that union semun is to be used for semctl IPC_STAT.
1651 d_semget (d_semget.U):
1652 This variable conditionally defines the HAS_SEMGET symbol, which
1653 indicates to the C program that the semget() routine is available.
1655 d_semop (d_semop.U):
1656 This variable conditionally defines the HAS_SEMOP symbol, which
1657 indicates to the C program that the semop() routine is available.
1659 d_sendmsg (d_sendmsg.U):
1660 This variable conditionally defines the HAS_SENDMSG symbol, which
1661 indicates to the C program that the sendmsg() routine is available.
1663 d_setegid (d_setegid.U):
1664 This variable conditionally defines the HAS_SETEGID symbol, which
1665 indicates to the C program that the setegid() routine is available
1666 to change the effective gid of the current program.
1668 d_seteuid (d_seteuid.U):
1669 This variable conditionally defines the HAS_SETEUID symbol, which
1670 indicates to the C program that the seteuid() routine is available
1671 to change the effective uid of the current program.
1673 d_setgrent (d_setgrent.U):
1674 This variable conditionally defines the HAS_SETGRENT symbol, which
1675 indicates to the C program that the setgrent() routine is available
1676 for initializing sequential access to the group database.
1678 d_setgrent_r (d_setgrent_r.U):
1679 This variable conditionally defines the HAS_SETGRENT_R symbol,
1680 which indicates to the C program that the setgrent_r()
1681 routine is available.
1683 d_setgrps (d_setgrps.U):
1684 This variable conditionally defines the HAS_SETGROUPS symbol, which
1685 indicates to the C program that the setgroups() routine is available
1686 to set the list of process groups.
1688 d_sethent (d_sethent.U):
1689 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1692 d_sethostent_r (d_sethostent_r.U):
1693 This variable conditionally defines the HAS_SETHOSTENT_R symbol,
1694 which indicates to the C program that the sethostent_r()
1695 routine is available.
1697 d_setitimer (d_setitimer.U):
1698 This variable conditionally defines the HAS_SETITIMER symbol, which
1699 indicates to the C program that the setitimer() routine is available.
1701 d_setlinebuf (d_setlnbuf.U):
1702 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1703 indicates to the C program that the setlinebuf() routine is available
1704 to change stderr or stdout from block-buffered or unbuffered to a
1707 d_setlocale (d_setlocale.U):
1708 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1709 available to handle locale-specific ctype implementations.
1711 d_setlocale_r (d_setlocale_r.U):
1712 This variable conditionally defines the HAS_SETLOCALE_R symbol,
1713 which indicates to the C program that the setlocale_r()
1714 routine is available.
1716 d_setnent (d_setnent.U):
1717 This variable conditionally defines HAS_SETNETENT if setnetent() is
1720 d_setnetent_r (d_setnetent_r.U):
1721 This variable conditionally defines the HAS_SETNETENT_R symbol,
1722 which indicates to the C program that the setnetent_r()
1723 routine is available.
1725 d_setpent (d_setpent.U):
1726 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1729 d_setpgid (d_setpgid.U):
1730 This variable conditionally defines the HAS_SETPGID symbol if the
1731 setpgid(pid, gpid) function is available to set process group ID.
1733 d_setpgrp2 (d_setpgrp2.U):
1734 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1735 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1736 is available to set the current process group.
1738 d_setpgrp (d_setpgrp.U):
1739 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1740 available to set the current process group.
1742 d_setprior (d_setprior.U):
1743 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1744 is available to set a process's priority.
1746 d_setproctitle (d_setproctitle.U):
1747 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1748 which indicates to the C program that the setproctitle() routine
1751 d_setprotoent_r (d_setprotoent_r.U):
1752 This variable conditionally defines the HAS_SETPROTOENT_R symbol,
1753 which indicates to the C program that the setprotoent_r()
1754 routine is available.
1756 d_setpwent (d_setpwent.U):
1757 This variable conditionally defines the HAS_SETPWENT symbol, which
1758 indicates to the C program that the setpwent() routine is available
1759 for initializing sequential access to the passwd database.
1761 d_setpwent_r (d_setpwent_r.U):
1762 This variable conditionally defines the HAS_SETPWENT_R symbol,
1763 which indicates to the C program that the setpwent_r()
1764 routine is available.
1766 d_setregid (d_setregid.U):
1767 This variable conditionally defines HAS_SETREGID if setregid() is
1768 available to change the real and effective gid of the current
1771 d_setresgid (d_setregid.U):
1772 This variable conditionally defines HAS_SETRESGID if setresgid() is
1773 available to change the real, effective and saved gid of the current
1776 d_setresuid (d_setreuid.U):
1777 This variable conditionally defines HAS_SETREUID if setresuid() is
1778 available to change the real, effective and saved uid of the current
1781 d_setreuid (d_setreuid.U):
1782 This variable conditionally defines HAS_SETREUID if setreuid() is
1783 available to change the real and effective uid of the current
1786 d_setrgid (d_setrgid.U):
1787 This variable conditionally defines the HAS_SETRGID symbol, which
1788 indicates to the C program that the setrgid() routine is available
1789 to change the real gid of the current program.
1791 d_setruid (d_setruid.U):
1792 This variable conditionally defines the HAS_SETRUID symbol, which
1793 indicates to the C program that the setruid() routine is available
1794 to change the real uid of the current program.
1796 d_setsent (d_setsent.U):
1797 This variable conditionally defines HAS_SETSERVENT if setservent() is
1800 d_setservent_r (d_setservent_r.U):
1801 This variable conditionally defines the HAS_SETSERVENT_R symbol,
1802 which indicates to the C program that the setservent_r()
1803 routine is available.
1805 d_setsid (d_setsid.U):
1806 This variable conditionally defines HAS_SETSID if setsid() is
1807 available to set the process group ID.
1809 d_setvbuf (d_setvbuf.U):
1810 This variable conditionally defines the HAS_SETVBUF symbol, which
1811 indicates to the C program that the setvbuf() routine is available
1812 to change buffering on an open stdio stream.
1815 This variable conditionally defines the USE_SFIO symbol,
1816 and indicates whether sfio is available (and should be used).
1819 This variable conditionally defines the HAS_SHM symbol, which
1820 indicates that the entire shm*(2) library is present.
1822 d_shmat (d_shmat.U):
1823 This variable conditionally defines the HAS_SHMAT symbol, which
1824 indicates to the C program that the shmat() routine is available.
1826 d_shmatprototype (d_shmat.U):
1827 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1828 symbol, which indicates that sys/shm.h has a prototype for
1831 d_shmctl (d_shmctl.U):
1832 This variable conditionally defines the HAS_SHMCTL symbol, which
1833 indicates to the C program that the shmctl() routine is available.
1835 d_shmdt (d_shmdt.U):
1836 This variable conditionally defines the HAS_SHMDT symbol, which
1837 indicates to the C program that the shmdt() routine is available.
1839 d_shmget (d_shmget.U):
1840 This variable conditionally defines the HAS_SHMGET symbol, which
1841 indicates to the C program that the shmget() routine is available.
1843 d_sigaction (d_sigaction.U):
1844 This variable conditionally defines the HAS_SIGACTION symbol, which
1845 indicates that the Vr4 sigaction() routine is available.
1847 d_sigprocmask (d_sigprocmask.U):
1848 This variable conditionally defines HAS_SIGPROCMASK
1849 if sigprocmask() is available to examine or change the signal mask
1850 of the calling process.
1852 d_sigsetjmp (d_sigsetjmp.U):
1853 This variable conditionally defines the HAS_SIGSETJMP symbol,
1854 which indicates that the sigsetjmp() routine is available to
1855 call setjmp() and optionally save the process's signal mask.
1857 d_sockatmark (d_sockatmark.U):
1858 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1859 indicates to the C program that the sockatmark() routine is available.
1861 d_sockatmarkproto (d_sockatmarkproto.U):
1862 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1863 which indicates to the C program that the system provides
1864 a prototype for the sockatmark() function. Otherwise, it is
1865 up to the program to supply one.
1867 d_socket (d_socket.U):
1868 This variable conditionally defines HAS_SOCKET, which indicates
1869 that the BSD socket interface is supported.
1871 d_socklen_t (d_socklen_t.U):
1872 This symbol will be defined if the C compiler supports socklen_t.
1874 d_sockpair (d_socket.U):
1875 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1876 indicates that the BSD socketpair() is supported.
1878 d_socks5_init (d_socks5_init.U):
1879 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1880 indicates to the C program that the socks5_init() routine is available.
1882 d_sqrtl (d_sqrtl.U):
1883 This variable conditionally defines the HAS_SQRTL symbol, which
1884 indicates to the C program that the sqrtl() routine is available.
1886 d_srand48_r (d_srand48_r.U):
1887 This variable conditionally defines the HAS_SRAND48_R symbol,
1888 which indicates to the C program that the srand48_r()
1889 routine is available.
1891 d_srandom_r (d_srandom_r.U):
1892 This variable conditionally defines the HAS_SRANDOM_R symbol,
1893 which indicates to the C program that the srandom_r()
1894 routine is available.
1896 d_sresgproto (d_sresgproto.U):
1897 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1898 which indicates to the C program that the system provides
1899 a prototype for the setresgid() function. Otherwise, it is
1900 up to the program to supply one.
1902 d_sresuproto (d_sresuproto.U):
1903 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1904 which indicates to the C program that the system provides
1905 a prototype for the setresuid() function. Otherwise, it is
1906 up to the program to supply one.
1908 d_statblks (d_statblks.U):
1909 This variable conditionally defines USE_STAT_BLOCKS
1910 if this system has a stat structure declaring
1911 st_blksize and st_blocks.
1913 d_statfs_f_flags (d_statfs_f_flags.U):
1914 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1915 symbol, which indicates to struct statfs from has f_flags member.
1916 This kind of struct statfs is coming from sys/mount.h (BSD),
1917 not from sys/statfs.h (SYSV).
1919 d_statfs_s (d_statfs_s.U):
1920 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1921 which indicates that the struct statfs is supported.
1923 d_statvfs (d_statvfs.U):
1924 This variable conditionally defines the HAS_STATVFS symbol, which
1925 indicates to the C program that the statvfs() routine is available.
1927 d_stdio_cnt_lval (d_stdstdio.U):
1928 This variable conditionally defines STDIO_CNT_LVALUE if the
1929 FILE_cnt macro can be used as an lvalue.
1931 d_stdio_ptr_lval (d_stdstdio.U):
1932 This variable conditionally defines STDIO_PTR_LVALUE if the
1933 FILE_ptr macro can be used as an lvalue.
1935 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1936 This symbol is defined if using the FILE_ptr macro as an lvalue
1937 to increase the pointer by n leaves File_cnt(fp) unchanged.
1939 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1940 This symbol is defined if using the FILE_ptr macro as an lvalue
1941 to increase the pointer by n has the side effect of decreasing the
1942 value of File_cnt(fp) by n.
1944 d_stdio_stream_array (stdio_streams.U):
1945 This variable tells whether there is an array holding
1948 d_stdiobase (d_stdstdio.U):
1949 This variable conditionally defines USE_STDIO_BASE if this system
1950 has a FILE structure declaring a usable _base field (or equivalent)
1953 d_stdstdio (d_stdstdio.U):
1954 This variable conditionally defines USE_STDIO_PTR if this system
1955 has a FILE structure declaring usable _ptr and _cnt fields (or
1956 equivalent) in stdio.h.
1958 d_strchr (d_strchr.U):
1959 This variable conditionally defines HAS_STRCHR if strchr() and
1960 strrchr() are available for string searching.
1962 d_strcoll (d_strcoll.U):
1963 This variable conditionally defines HAS_STRCOLL if strcoll() is
1964 available to compare strings using collating information.
1966 d_strctcpy (d_strctcpy.U):
1967 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1968 indicates to the C program that this C compiler knows how to copy
1971 d_strerrm (d_strerror.U):
1972 This variable holds what Strerrr is defined as to translate an error
1973 code condition into an error message string. It could be 'strerror'
1974 or a more complex macro emulating strrror with sys_errlist[], or the
1975 "unknown" string when both strerror and sys_errlist are missing.
1977 d_strerror (d_strerror.U):
1978 This variable conditionally defines HAS_STRERROR if strerror() is
1979 available to translate error numbers to strings.
1981 d_strerror_r (d_strerror_r.U):
1982 This variable conditionally defines the HAS_STRERROR_R symbol,
1983 which indicates to the C program that the strerror_r()
1984 routine is available.
1986 d_strftime (d_strftime.U):
1987 This variable conditionally defines the HAS_STRFTIME symbol, which
1988 indicates to the C program that the strftime() routine is available.
1990 d_strtod (d_strtod.U):
1991 This variable conditionally defines the HAS_STRTOD symbol, which
1992 indicates to the C program that the strtod() routine is available
1993 to provide better numeric string conversion than atof().
1995 d_strtol (d_strtol.U):
1996 This variable conditionally defines the HAS_STRTOL symbol, which
1997 indicates to the C program that the strtol() routine is available
1998 to provide better numeric string conversion than atoi() and friends.
2000 d_strtold (d_strtold.U):
2001 This variable conditionally defines the HAS_STRTOLD symbol, which
2002 indicates to the C program that the strtold() routine is available.
2004 d_strtoll (d_strtoll.U):
2005 This variable conditionally defines the HAS_STRTOLL symbol, which
2006 indicates to the C program that the strtoll() routine is available.
2008 d_strtoq (d_strtoq.U):
2009 This variable conditionally defines the HAS_STRTOQ symbol, which
2010 indicates to the C program that the strtoq() routine is available.
2012 d_strtoul (d_strtoul.U):
2013 This variable conditionally defines the HAS_STRTOUL symbol, which
2014 indicates to the C program that the strtoul() routine is available
2015 to provide conversion of strings to unsigned long.
2017 d_strtoull (d_strtoull.U):
2018 This variable conditionally defines the HAS_STRTOULL symbol, which
2019 indicates to the C program that the strtoull() routine is available.
2021 d_strtouq (d_strtouq.U):
2022 This variable conditionally defines the HAS_STRTOUQ symbol, which
2023 indicates to the C program that the strtouq() routine is available.
2025 d_strxfrm (d_strxfrm.U):
2026 This variable conditionally defines HAS_STRXFRM if strxfrm() is
2027 available to transform strings.
2029 d_suidsafe (d_dosuid.U):
2030 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
2031 if setuid scripts can be secure. This test looks in /dev/fd/.
2033 d_symlink (d_symlink.U):
2034 This variable conditionally defines the HAS_SYMLINK symbol, which
2035 indicates to the C program that the symlink() routine is available
2036 to create symbolic links.
2038 d_syscall (d_syscall.U):
2039 This variable conditionally defines HAS_SYSCALL if syscall() is
2040 available call arbitrary system calls.
2042 d_syscallproto (d_syscallproto.U):
2043 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
2044 which indicates to the C program that the system provides
2045 a prototype for the syscall() function. Otherwise, it is
2046 up to the program to supply one.
2048 d_sysconf (d_sysconf.U):
2049 This variable conditionally defines the HAS_SYSCONF symbol, which
2050 indicates to the C program that the sysconf() routine is available
2051 to determine system related limits and options.
2053 d_sysernlst (d_strerror.U):
2054 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
2055 is available to translate error numbers to the symbolic name.
2057 d_syserrlst (d_strerror.U):
2058 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
2059 available to translate error numbers to strings.
2061 d_system (d_system.U):
2062 This variable conditionally defines HAS_SYSTEM if system() is
2063 available to issue a shell command.
2065 d_tcgetpgrp (d_tcgtpgrp.U):
2066 This variable conditionally defines the HAS_TCGETPGRP symbol, which
2067 indicates to the C program that the tcgetpgrp() routine is available.
2068 to get foreground process group ID.
2070 d_tcsetpgrp (d_tcstpgrp.U):
2071 This variable conditionally defines the HAS_TCSETPGRP symbol, which
2072 indicates to the C program that the tcsetpgrp() routine is available
2073 to set foreground process group ID.
2075 d_telldir (d_readdir.U):
2076 This variable conditionally defines HAS_TELLDIR if telldir() is
2079 d_telldirproto (d_telldirproto.U):
2080 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
2081 which indicates to the C program that the system provides
2082 a prototype for the telldir() function. Otherwise, it is
2083 up to the program to supply one.
2086 This variable conditionally defines the HAS_TIME symbol, which indicates
2087 that the time() routine exists. The time() routine is normaly
2088 provided on UNIX systems.
2090 d_times (d_times.U):
2091 This variable conditionally defines the HAS_TIMES symbol, which indicates
2092 that the times() routine exists. The times() routine is normaly
2093 provided on UNIX systems. You may have to include <sys/times.h>.
2095 d_tm_tm_gmtoff (i_time.U):
2096 This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
2097 indicates to the C program that the struct tm has the tm_gmtoff field.
2099 d_tm_tm_zone (i_time.U):
2100 This variable conditionally defines HAS_TM_TM_ZONE, which indicates
2101 indicates to the C program that the struct tm has the tm_zone field.
2103 d_tmpnam_r (d_tmpnam_r.U):
2104 This variable conditionally defines the HAS_TMPNAM_R symbol,
2105 which indicates to the C program that the tmpnam_r()
2106 routine is available.
2108 d_truncate (d_truncate.U):
2109 This variable conditionally defines HAS_TRUNCATE if truncate() is
2110 available to truncate files.
2112 d_ttyname_r (d_ttyname_r.U):
2113 This variable conditionally defines the HAS_TTYNAME_R symbol,
2114 which indicates to the C program that the ttyname_r()
2115 routine is available.
2117 d_tzname (d_tzname.U):
2118 This variable conditionally defines HAS_TZNAME if tzname[] is
2119 available to access timezone names.
2121 d_u32align (d_u32align.U):
2122 This variable tells whether you must access character data
2123 through U32-aligned pointers.
2125 d_ualarm (d_ualarm.U):
2126 This variable conditionally defines the HAS_UALARM symbol, which
2127 indicates to the C program that the ualarm() routine is available.
2129 d_umask (d_umask.U):
2130 This variable conditionally defines the HAS_UMASK symbol, which
2131 indicates to the C program that the umask() routine is available.
2132 to set and get the value of the file creation mask.
2134 d_uname (d_gethname.U):
2135 This variable conditionally defines the HAS_UNAME symbol, which
2136 indicates to the C program that the uname() routine may be
2137 used to derive the host name.
2139 d_union_semun (d_union_semun.U):
2140 This variable conditionally defines HAS_UNION_SEMUN if the
2141 union semun is defined by including <sys/sem.h>.
2143 d_unordered (d_unordered.U):
2144 This variable conditionally defines the HAS_UNORDERED symbol, which
2145 indicates to the C program that the unordered() routine is available.
2147 d_usleep (d_usleep.U):
2148 This variable conditionally defines HAS_USLEEP if usleep() is
2149 available to do high granularity sleeps.
2151 d_usleepproto (d_usleepproto.U):
2152 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
2153 which indicates to the C program that the system provides
2154 a prototype for the usleep() function. Otherwise, it is
2155 up to the program to supply one.
2157 d_ustat (d_ustat.U):
2158 This variable conditionally defines HAS_USTAT if ustat() is
2159 available to query file system statistics by dev_t.
2161 d_vendorarch (vendorarch.U):
2162 This variable conditionally defined PERL_VENDORARCH.
2164 d_vendorbin (vendorbin.U):
2165 This variable conditionally defines PERL_VENDORBIN.
2167 d_vendorlib (vendorlib.U):
2168 This variable conditionally defines PERL_VENDORLIB.
2170 d_vendorscript (vendorscript.U):
2171 This variable conditionally defines PERL_VENDORSCRIPT.
2173 d_vfork (d_vfork.U):
2174 This variable conditionally defines the HAS_VFORK symbol, which
2175 indicates the vfork() routine is available.
2177 d_void_closedir (d_closedir.U):
2178 This variable conditionally defines VOID_CLOSEDIR if closedir()
2179 does not return a value.
2181 d_voidsig (d_voidsig.U):
2182 This variable conditionally defines VOIDSIG if this system
2183 declares "void (*signal(...))()" in signal.h. The old way was to
2184 declare it as "int (*signal(...))()".
2186 d_voidtty (i_sysioctl.U):
2187 This variable conditionally defines USE_IOCNOTTY to indicate that the
2188 ioctl() call with TIOCNOTTY should be used to void tty association.
2189 Otherwise (on USG probably), it is enough to close the standard file
2190 decriptors and do a setpgrp().
2192 d_volatile (d_volatile.U):
2193 This variable conditionally defines the HASVOLATILE symbol, which
2194 indicates to the C program that this C compiler knows about the
2195 volatile declaration.
2197 d_vprintf (d_vprintf.U):
2198 This variable conditionally defines the HAS_VPRINTF symbol, which
2199 indicates to the C program that the vprintf() routine is available
2200 to printf with a pointer to an argument list.
2202 d_wait4 (d_wait4.U):
2203 This variable conditionally defines the HAS_WAIT4 symbol, which
2204 indicates the wait4() routine is available.
2206 d_waitpid (d_waitpid.U):
2207 This variable conditionally defines HAS_WAITPID if waitpid() is
2208 available to wait for child process.
2210 d_wcstombs (d_wcstombs.U):
2211 This variable conditionally defines the HAS_WCSTOMBS symbol, which
2212 indicates to the C program that the wcstombs() routine is available
2213 to convert wide character strings to multibyte strings.
2215 d_wctomb (d_wctomb.U):
2216 This variable conditionally defines the HAS_WCTOMB symbol, which
2217 indicates to the C program that the wctomb() routine is available
2218 to convert a wide character to a multibyte.
2220 d_writev (d_writev.U):
2221 This variable conditionally defines the HAS_WRITEV symbol, which
2222 indicates to the C program that the writev() routine is available.
2225 This variable conditionally defines the symbol XENIX, which alerts
2226 the C program that it runs under Xenix.
2229 This variable is used internally by Configure to determine the
2230 full pathname (if any) of the date program. After Configure runs,
2231 the value is reset to a plain "date" and is not useful.
2233 db_hashtype (i_db.U):
2234 This variable contains the type of the hash structure element
2235 in the <db.h> header file. In older versions of DB, it was
2236 int, while in newer ones it is u_int32_t.
2238 db_prefixtype (i_db.U):
2239 This variable contains the type of the prefix structure element
2240 in the <db.h> header file. In older versions of DB, it was
2241 int, while in newer ones it is size_t.
2243 db_version_major (i_db.U):
2244 This variable contains the major version number of
2245 Berkeley DB found in the <db.h> header file.
2247 db_version_minor (i_db.U):
2248 This variable contains the minor version number of
2249 Berkeley DB found in the <db.h> header file.
2250 For DB version 1 this is always 0.
2252 db_version_patch (i_db.U):
2253 This variable contains the patch version number of
2254 Berkeley DB found in the <db.h> header file.
2255 For DB version 1 this is always 0.
2257 defvoidused (voidflags.U):
2258 This variable contains the default value of the VOIDUSED symbol (15).
2260 direntrytype (i_dirent.U):
2261 This symbol is set to 'struct direct' or 'struct dirent' depending on
2262 whether dirent is available or not. You should use this pseudo type to
2263 portably declare your directory entries.
2266 This variable contains the extension that is to be used for the
2267 dynamically loaded modules that perl generaties.
2270 This variable contains the name of the dynamic loading file that
2271 will be used with the package.
2273 doublesize (doublesize.U):
2274 This variable contains the value of the DOUBLESIZE symbol, which
2275 indicates to the C program how many bytes there are in a double.
2277 drand01 (randfunc.U):
2278 Indicates the macro to be used to generate normalized
2279 random numbers. Uses randfunc, often divided by
2280 (double) (((unsigned long) 1 << randbits)) in order to
2281 normalize the result.
2282 In C programs, the macro 'Drand01' is mapped to drand01.
2284 drand48_r_proto (d_drand48_r.U):
2285 This variable encodes the prototype of drand48_r.
2286 It is zero if d_drand48_r is undef, and one of the
2287 REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
2290 dynamic_ext (Extensions.U):
2291 This variable holds a list of XS extension files we want to
2292 link dynamically into the package. It is used by Makefile.
2294 eagain (nblock_io.U):
2295 This variable bears the symbolic errno code set by read() when no
2296 data is present on the file and non-blocking I/O was enabled (otherwise,
2297 read() blocks naturally).
2300 This variable conditionally defines EBCDIC if this
2301 system uses EBCDIC encoding. Among other things, this
2302 means that the character ranges are not contiguous.
2306 This variable is used internally by Configure to determine the
2307 full pathname (if any) of the echo program. After Configure runs,
2308 the value is reset to a plain "echo" and is not useful.
2311 This variable is used internally by Configure to determine the
2312 full pathname (if any) of the egrep program. After Configure runs,
2313 the value is reset to a plain "egrep" and is not useful.
2316 This variable is defined but not used by Configure.
2317 The value is a plain '' and is not useful.
2319 endgrent_r_proto (d_endgrent_r.U):
2320 This variable encodes the prototype of endgrent_r.
2321 It is zero if d_endgrent_r is undef, and one of the
2322 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
2325 endhostent_r_proto (d_endhostent_r.U):
2326 This variable encodes the prototype of endhostent_r.
2327 It is zero if d_endhostent_r is undef, and one of the
2328 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
2331 endnetent_r_proto (d_endnetent_r.U):
2332 This variable encodes the prototype of endnetent_r.
2333 It is zero if d_endnetent_r is undef, and one of the
2334 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
2337 endprotoent_r_proto (d_endprotoent_r.U):
2338 This variable encodes the prototype of endprotoent_r.
2339 It is zero if d_endprotoent_r is undef, and one of the
2340 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
2343 endpwent_r_proto (d_endpwent_r.U):
2344 This variable encodes the prototype of endpwent_r.
2345 It is zero if d_endpwent_r is undef, and one of the
2346 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
2349 endservent_r_proto (d_endservent_r.U):
2350 This variable encodes the prototype of endservent_r.
2351 It is zero if d_endservent_r is undef, and one of the
2352 REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
2356 When running under Eunice this variable contains a command which will
2357 convert a shell script to the proper form of text file for it to be
2358 executable by the shell. On other systems it is a no-op.
2361 This is an old synonym for _exe.
2364 This variable is used internally by Configure to determine the
2365 full pathname (if any) of the expr program. After Configure runs,
2366 the value is reset to a plain "expr" and is not useful.
2368 extensions (Extensions.U):
2369 This variable holds a list of all extension files (both XS and
2370 non-xs linked into the package. It is propagated to Config.pm
2371 and is typically used to test whether a particular extesion
2375 This variable holds a list of extra modules to install.
2377 fflushNULL (fflushall.U):
2378 This symbol, if defined, tells that fflush(NULL) does flush
2379 all pending stdio output.
2381 fflushall (fflushall.U):
2382 This symbol, if defined, tells that to flush
2383 all pending stdio output one must loop through all
2384 the stdio file handles stored in an array and fflush them.
2385 Note that if fflushNULL is defined, fflushall will not
2386 even be probed for and will be left undefined.
2389 This variable is defined but not used by Configure.
2390 The value is a plain '' and is not useful.
2392 firstmakefile (Unix.U):
2393 This variable defines the first file searched by make. On unix,
2394 it is makefile (then Makefile). On case-insensitive systems,
2395 it might be something else. This is only used to deal with
2396 convoluted make depend tricks.
2399 This variable is defined but not used by Configure.
2400 The value is a plain '' and is not useful.
2402 fpossize (fpossize.U):
2403 This variable contains the size of a fpostype in bytes.
2405 fpostype (fpostype.U):
2406 This variable defines Fpos_t to be something like fpos_t, long,
2407 uint, or whatever type is used to declare file positions in libc.
2409 freetype (mallocsrc.U):
2410 This variable contains the return type of free(). It is usually
2411 void, but occasionally int.
2414 This variable contains the command used by Configure
2415 to copy files from the target host. Useful and available
2416 only during Perl build.
2417 The string ':' if not cross-compiling.
2420 This variable contains the full pathname to 'ar', whether or
2421 not the user has specified 'portability'. This is only used
2425 This variable contains the full pathname to 'csh', whether or
2426 not the user has specified 'portability'. This is only used
2427 in the compiled C program, and we assume that all systems which
2428 can share this executable will have the same full pathname to
2431 full_sed (Loc_sed.U):
2432 This variable contains the full pathname to 'sed', whether or
2433 not the user has specified 'portability'. This is only used
2434 in the compiled C program, and we assume that all systems which
2435 can share this executable will have the same full pathname to
2438 gccansipedantic (gccvers.U):
2439 If GNU cc (gcc) is used, this variable will enable (if set) the
2440 -ansi and -pedantic ccflags for building core files (through
2441 cflags script). (See Porting/pumpkin.pod for full description).
2443 gccosandvers (gccvers.U):
2444 If GNU cc (gcc) is used, this variable holds the operating system
2445 and version used to compile gcc. It is set to '' if not gcc,
2446 or if nothing useful can be parsed as the os version.
2448 gccversion (gccvers.U):
2449 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2450 indicate whether the compiler is version 1 or 2. This is used in
2451 setting some of the default cflags. It is set to '' if not gcc.
2453 getgrent_r_proto (d_getgrent_r.U):
2454 This variable encodes the prototype of getgrent_r.
2455 It is zero if d_getgrent_r is undef, and one of the
2456 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
2459 getgrgid_r_proto (d_getgrgid_r.U):
2460 This variable encodes the prototype of getgrgid_r.
2461 It is zero if d_getgrgid_r is undef, and one of the
2462 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
2465 getgrnam_r_proto (d_getgrnam_r.U):
2466 This variable encodes the prototype of getgrnam_r.
2467 It is zero if d_getgrnam_r is undef, and one of the
2468 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
2471 gethostbyaddr_r_proto (d_gethostbyaddr_r.U):
2472 This variable encodes the prototype of gethostbyaddr_r.
2473 It is zero if d_gethostbyaddr_r is undef, and one of the
2474 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
2477 gethostbyname_r_proto (d_gethostbyname_r.U):
2478 This variable encodes the prototype of gethostbyname_r.
2479 It is zero if d_gethostbyname_r is undef, and one of the
2480 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
2483 gethostent_r_proto (d_gethostent_r.U):
2484 This variable encodes the prototype of gethostent_r.
2485 It is zero if d_gethostent_r is undef, and one of the
2486 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
2489 getlogin_r_proto (d_getlogin_r.U):
2490 This variable encodes the prototype of getlogin_r.
2491 It is zero if d_getlogin_r is undef, and one of the
2492 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
2495 getnetbyaddr_r_proto (d_getnetbyaddr_r.U):
2496 This variable encodes the prototype of getnetbyaddr_r.
2497 It is zero if d_getnetbyaddr_r is undef, and one of the
2498 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
2501 getnetbyname_r_proto (d_getnetbyname_r.U):
2502 This variable encodes the prototype of getnetbyname_r.
2503 It is zero if d_getnetbyname_r is undef, and one of the
2504 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
2507 getnetent_r_proto (d_getnetent_r.U):
2508 This variable encodes the prototype of getnetent_r.
2509 It is zero if d_getnetent_r is undef, and one of the
2510 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
2513 getprotobyname_r_proto (d_getprotobyname_r.U):
2514 This variable encodes the prototype of getprotobyname_r.
2515 It is zero if d_getprotobyname_r is undef, and one of the
2516 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
2519 getprotobynumber_r_proto (d_getprotobynumber_r.U):
2520 This variable encodes the prototype of getprotobynumber_r.
2521 It is zero if d_getprotobynumber_r is undef, and one of the
2522 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
2525 getprotoent_r_proto (d_getprotoent_r.U):
2526 This variable encodes the prototype of getprotoent_r.
2527 It is zero if d_getprotoent_r is undef, and one of the
2528 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
2531 getpwent_r_proto (d_getpwent_r.U):
2532 This variable encodes the prototype of getpwent_r.
2533 It is zero if d_getpwent_r is undef, and one of the
2534 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
2537 getpwnam_r_proto (d_getpwnam_r.U):
2538 This variable encodes the prototype of getpwnam_r.
2539 It is zero if d_getpwnam_r is undef, and one of the
2540 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
2543 getpwuid_r_proto (d_getpwuid_r.U):
2544 This variable encodes the prototype of getpwuid_r.
2545 It is zero if d_getpwuid_r is undef, and one of the
2546 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
2549 getservbyname_r_proto (d_getservbyname_r.U):
2550 This variable encodes the prototype of getservbyname_r.
2551 It is zero if d_getservbyname_r is undef, and one of the
2552 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
2555 getservbyport_r_proto (d_getservbyport_r.U):
2556 This variable encodes the prototype of getservbyport_r.
2557 It is zero if d_getservbyport_r is undef, and one of the
2558 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
2561 getservent_r_proto (d_getservent_r.U):
2562 This variable encodes the prototype of getservent_r.
2563 It is zero if d_getservent_r is undef, and one of the
2564 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
2567 getspnam_r_proto (d_getspnam_r.U):
2568 This variable encodes the prototype of getspnam_r.
2569 It is zero if d_getspnam_r is undef, and one of the
2570 REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
2574 This variable contains the format string used for printing a Gid_t.
2576 gidsign (gidsign.U):
2577 This variable contains the signedness of a gidtype.
2578 1 for unsigned, -1 for signed.
2580 gidsize (gidsize.U):
2581 This variable contains the size of a gidtype in bytes.
2583 gidtype (gidtype.U):
2584 This variable defines Gid_t to be something like gid_t, int,
2585 ushort, or whatever type is used to declare the return type
2586 of getgid(). Typically, it is the type of group ids in the kernel.
2589 This variable holds the general path (space-separated) used to
2590 find libraries. It may contain directories that do not exist on
2591 this platform, libpth is the cleaned-up version.
2594 This variable is used internally by Configure to determine the
2595 full pathname (if any) of the gmake program. After Configure runs,
2596 the value is reset to a plain "gmake" and is not useful.
2598 gmtime_r_proto (d_gmtime_r.U):
2599 This variable encodes the prototype of gmtime_r.
2600 It is zero if d_gmtime_r is undef, and one of the
2601 REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
2604 gnulibc_version (d_gnulibc.U):
2605 This variable contains the version number of the GNU C library.
2606 It is usually something like '2.2.5'. It is a plain '' if this
2607 is not the GNU C library, or if the version is unknown.
2610 This variable is used internally by Configure to determine the
2611 full pathname (if any) of the grep program. After Configure runs,
2612 the value is reset to a plain "grep" and is not useful.
2615 This variable contains a command that produces the text of the
2616 /etc/group file. This is normally "cat /etc/group", but can be
2617 "ypcat group" when NIS is used.
2618 On some systems, such as os390, there may be no equivalent
2619 command, in which case this variable is unset.
2621 groupstype (groupstype.U):
2622 This variable defines Groups_t to be something like gid_t, int,
2623 ushort, or whatever type is used for the second argument to
2624 getgroups() and setgroups(). Usually, this is the same as
2625 gidtype (gid_t), but sometimes it isn't.
2628 This variable is used internally by Configure to determine the
2629 full pathname (if any) of the gzip program. After Configure runs,
2630 the value is reset to a plain "gzip" and is not useful.
2632 h_fcntl (h_fcntl.U):
2633 This is variable gets set in various places to tell i_fcntl that
2634 <fcntl.h> should be included.
2636 h_sysfile (h_sysfile.U):
2637 This is variable gets set in various places to tell i_sys_file that
2638 <sys/file.h> should be included.
2641 Gives the type of hints used for previous answers. May be one of
2642 "default", "recommended" or "previous".
2645 This variable contains a command that produces the text of the
2646 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2647 "ypcat hosts" when NIS is used.
2648 On some systems, such as os390, there may be no equivalent
2649 command, in which case this variable is unset.
2651 html1dir (html1dir.U):
2652 This variable contains the name of the directory in which html
2653 source pages are to be put. This directory is for pages
2654 that describe whole programs, not libraries or modules. It
2655 is intended to correspond roughly to section 1 of the Unix
2658 html1direxp (html1dir.U):
2659 This variable is the same as the html1dir variable, but is filename
2660 expanded at configuration time, for convenient use in makefiles.
2662 html3dir (html3dir.U):
2663 This variable contains the name of the directory in which html
2664 source pages are to be put. This directory is for pages
2665 that describe libraries or modules. It is intended to
2666 correspond roughly to section 3 of the Unix manuals.
2668 html3direxp (html3dir.U):
2669 This variable is the same as the html3dir variable, but is filename
2670 expanded at configuration time, for convenient use in makefiles.
2673 This variable is the size of an I16 in bytes.
2676 This variable contains the C type used for Perl's I16.
2679 This variable is the size of an I32 in bytes.
2682 This variable contains the C type used for Perl's I32.
2685 This variable is the size of an I64 in bytes.
2688 This variable contains the C type used for Perl's I64.
2691 This variable is the size of an I8 in bytes.
2694 This variable contains the C type used for Perl's I8.
2696 i_arpainet (i_arpainet.U):
2697 This variable conditionally defines the I_ARPA_INET symbol,
2698 and indicates whether a C program should include <arpa/inet.h>.
2700 i_bsdioctl (i_sysioctl.U):
2701 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2702 indicates to the C program that <sys/bsdioctl.h> exists and should
2705 i_crypt (i_crypt.U):
2706 This variable conditionally defines the I_CRYPT symbol, and indicates
2707 whether a C program should include <crypt.h>.
2710 This variable conditionally defines the I_DB symbol, and indicates
2711 whether a C program may include Berkeley's DB include file <db.h>.
2714 This variable conditionally defines the I_DBM symbol, which
2715 indicates to the C program that <dbm.h> exists and should
2718 i_dirent (i_dirent.U):
2719 This variable conditionally defines I_DIRENT, which indicates
2720 to the C program that it should include <dirent.h>.
2723 This variable conditionally defines the I_DLD symbol, which
2724 indicates to the C program that <dld.h> (GNU dynamic loading)
2725 exists and should be included.
2727 i_dlfcn (i_dlfcn.U):
2728 This variable conditionally defines the I_DLFCN symbol, which
2729 indicates to the C program that <dlfcn.h> exists and should
2732 i_fcntl (i_fcntl.U):
2733 This variable controls the value of I_FCNTL (which tells
2734 the C program to include <fcntl.h>).
2736 i_float (i_float.U):
2737 This variable conditionally defines the I_FLOAT symbol, and indicates
2738 whether a C program may include <float.h> to get symbols like DBL_MAX
2739 or DBL_MIN, i.e. machine dependent floating point values.
2742 This variable conditionally defines the I_FP symbol, and indicates
2743 whether a C program should include <fp.h>.
2745 i_fp_class (i_fp_class.U):
2746 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2747 whether a C program should include <fp_class.h>.
2750 This variable conditionally defines the I_GDBM symbol, which
2751 indicates to the C program that <gdbm.h> exists and should
2755 This variable conditionally defines the I_GRP symbol, and indicates
2756 whether a C program should include <grp.h>.
2758 i_ieeefp (i_ieeefp.U):
2759 This variable conditionally defines the I_IEEEFP symbol, and indicates
2760 whether a C program should include <ieeefp.h>.
2762 i_inttypes (i_inttypes.U):
2763 This variable conditionally defines the I_INTTYPES symbol,
2764 and indicates whether a C program should include <inttypes.h>.
2766 i_langinfo (i_langinfo.U):
2767 This variable conditionally defines the I_LANGINFO symbol,
2768 and indicates whether a C program should include <langinfo.h>.
2770 i_libutil (i_libutil.U):
2771 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2772 whether a C program should include <libutil.h>.
2774 i_limits (i_limits.U):
2775 This variable conditionally defines the I_LIMITS symbol, and indicates
2776 whether a C program may include <limits.h> to get symbols like WORD_BIT
2779 i_locale (i_locale.U):
2780 This variable conditionally defines the I_LOCALE symbol,
2781 and indicates whether a C program should include <locale.h>.
2783 i_machcthr (i_machcthr.U):
2784 This variable conditionally defines the I_MACH_CTHREADS symbol,
2785 and indicates whether a C program should include <mach/cthreads.h>.
2787 i_malloc (i_malloc.U):
2788 This variable conditionally defines the I_MALLOC symbol, and indicates
2789 whether a C program should include <malloc.h>.
2792 This variable conditionally defines the I_MATH symbol, and indicates
2793 whether a C program may include <math.h>.
2795 i_memory (i_memory.U):
2796 This variable conditionally defines the I_MEMORY symbol, and indicates
2797 whether a C program should include <memory.h>.
2799 i_mntent (i_mntent.U):
2800 This variable conditionally defines the I_MNTENT symbol, and indicates
2801 whether a C program should include <mntent.h>.
2804 This variable conditionally defines the I_NDBM symbol, which
2805 indicates to the C program that <ndbm.h> exists and should
2808 i_netdb (i_netdb.U):
2809 This variable conditionally defines the I_NETDB symbol, and indicates
2810 whether a C program should include <netdb.h>.
2812 i_neterrno (i_neterrno.U):
2813 This variable conditionally defines the I_NET_ERRNO symbol, which
2814 indicates to the C program that <net/errno.h> exists and should
2817 i_netinettcp (i_netinettcp.U):
2818 This variable conditionally defines the I_NETINET_TCP symbol,
2819 and indicates whether a C program should include <netinet/tcp.h>.
2822 This variable conditionally defines I_NETINET_IN, which indicates
2823 to the C program that it should include <netinet/in.h>. Otherwise,
2824 you may try <sys/in.h>.
2827 This variable conditionally defines the I_POLL symbol, and indicates
2828 whether a C program should include <poll.h>.
2831 This variable conditionally defines the I_PROT symbol, and indicates
2832 whether a C program should include <prot.h>.
2834 i_pthread (i_pthread.U):
2835 This variable conditionally defines the I_PTHREAD symbol,
2836 and indicates whether a C program should include <pthread.h>.
2839 This variable conditionally defines I_PWD, which indicates
2840 to the C program that it should include <pwd.h>.
2842 i_rpcsvcdbm (i_dbm.U):
2843 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2844 indicates to the C program that <rpcsvc/dbm.h> exists and should
2845 be included. Some System V systems might need this instead of <dbm.h>.
2848 This variable conditionally defines the I_SFIO symbol,
2849 and indicates whether a C program should include <sfio.h>.
2851 i_sgtty (i_termio.U):
2852 This variable conditionally defines the I_SGTTY symbol, which
2853 indicates to the C program that it should include <sgtty.h> rather
2856 i_shadow (i_shadow.U):
2857 This variable conditionally defines the I_SHADOW symbol, and indicates
2858 whether a C program should include <shadow.h>.
2860 i_socks (i_socks.U):
2861 This variable conditionally defines the I_SOCKS symbol, and indicates
2862 whether a C program should include <socks.h>.
2864 i_stdarg (i_varhdr.U):
2865 This variable conditionally defines the I_STDARG symbol, which
2866 indicates to the C program that <stdarg.h> exists and should
2869 i_stddef (i_stddef.U):
2870 This variable conditionally defines the I_STDDEF symbol, which
2871 indicates to the C program that <stddef.h> exists and should
2874 i_stdlib (i_stdlib.U):
2875 This variable conditionally defines the I_STDLIB symbol, which
2876 indicates to the C program that <stdlib.h> exists and should
2879 i_string (i_string.U):
2880 This variable conditionally defines the I_STRING symbol, which
2881 indicates that <string.h> should be included rather than <strings.h>.
2883 i_sunmath (i_sunmath.U):
2884 This variable conditionally defines the I_SUNMATH symbol, and indicates
2885 whether a C program should include <sunmath.h>.
2887 i_sysaccess (i_sysaccess.U):
2888 This variable conditionally defines the I_SYS_ACCESS symbol,
2889 and indicates whether a C program should include <sys/access.h>.
2891 i_sysdir (i_sysdir.U):
2892 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2893 whether a C program should include <sys/dir.h>.
2895 i_sysfile (i_sysfile.U):
2896 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2897 whether a C program should include <sys/file.h> to get R_OK and friends.
2899 i_sysfilio (i_sysioctl.U):
2900 This variable conditionally defines the I_SYS_FILIO symbol, which
2901 indicates to the C program that <sys/filio.h> exists and should
2902 be included in preference to <sys/ioctl.h>.
2905 This variable conditionally defines I_SYS_IN, which indicates
2906 to the C program that it should include <sys/in.h> instead of
2909 i_sysioctl (i_sysioctl.U):
2910 This variable conditionally defines the I_SYS_IOCTL symbol, which
2911 indicates to the C program that <sys/ioctl.h> exists and should
2914 i_syslog (i_syslog.U):
2915 This variable conditionally defines the I_SYSLOG symbol,
2916 and indicates whether a C program should include <syslog.h>.
2918 i_sysmman (i_sysmman.U):
2919 This variable conditionally defines the I_SYS_MMAN symbol, and
2920 indicates whether a C program should include <sys/mman.h>.
2922 i_sysmode (i_sysmode.U):
2923 This variable conditionally defines the I_SYSMODE symbol,
2924 and indicates whether a C program should include <sys/mode.h>.
2926 i_sysmount (i_sysmount.U):
2927 This variable conditionally defines the I_SYSMOUNT symbol,
2928 and indicates whether a C program should include <sys/mount.h>.
2930 i_sysndir (i_sysndir.U):
2931 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2932 whether a C program should include <sys/ndir.h>.
2934 i_sysparam (i_sysparam.U):
2935 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2936 whether a C program should include <sys/param.h>.
2938 i_sysresrc (i_sysresrc.U):
2939 This variable conditionally defines the I_SYS_RESOURCE symbol,
2940 and indicates whether a C program should include <sys/resource.h>.
2942 i_syssecrt (i_syssecrt.U):
2943 This variable conditionally defines the I_SYS_SECURITY symbol,
2944 and indicates whether a C program should include <sys/security.h>.
2946 i_sysselct (i_sysselct.U):
2947 This variable conditionally defines I_SYS_SELECT, which indicates
2948 to the C program that it should include <sys/select.h> in order to
2949 get the definition of struct timeval.
2951 i_syssockio (i_sysioctl.U):
2952 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2953 C program that socket ioctl codes may be found in <sys/sockio.h>
2954 instead of <sys/ioctl.h>.
2956 i_sysstat (i_sysstat.U):
2957 This variable conditionally defines the I_SYS_STAT symbol,
2958 and indicates whether a C program should include <sys/stat.h>.
2960 i_sysstatfs (i_sysstatfs.U):
2961 This variable conditionally defines the I_SYSSTATFS symbol,
2962 and indicates whether a C program should include <sys/statfs.h>.
2964 i_sysstatvfs (i_sysstatvfs.U):
2965 This variable conditionally defines the I_SYSSTATVFS symbol,
2966 and indicates whether a C program should include <sys/statvfs.h>.
2968 i_systime (i_time.U):
2969 This variable conditionally defines I_SYS_TIME, which indicates
2970 to the C program that it should include <sys/time.h>.
2972 i_systimek (i_time.U):
2973 This variable conditionally defines I_SYS_TIME_KERNEL, which
2974 indicates to the C program that it should include <sys/time.h>
2975 with KERNEL defined.
2977 i_systimes (i_systimes.U):
2978 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2979 whether a C program should include <sys/times.h>.
2981 i_systypes (i_systypes.U):
2982 This variable conditionally defines the I_SYS_TYPES symbol,
2983 and indicates whether a C program should include <sys/types.h>.
2985 i_sysuio (i_sysuio.U):
2986 This variable conditionally defines the I_SYSUIO symbol, and indicates
2987 whether a C program should include <sys/uio.h>.
2989 i_sysun (i_sysun.U):
2990 This variable conditionally defines I_SYS_UN, which indicates
2991 to the C program that it should include <sys/un.h> to get UNIX
2992 domain socket definitions.
2994 i_sysutsname (i_sysutsname.U):
2995 This variable conditionally defines the I_SYSUTSNAME symbol,
2996 and indicates whether a C program should include <sys/utsname.h>.
2998 i_sysvfs (i_sysvfs.U):
2999 This variable conditionally defines the I_SYSVFS symbol,
3000 and indicates whether a C program should include <sys/vfs.h>.
3002 i_syswait (i_syswait.U):
3003 This variable conditionally defines I_SYS_WAIT, which indicates
3004 to the C program that it should include <sys/wait.h>.
3006 i_termio (i_termio.U):
3007 This variable conditionally defines the I_TERMIO symbol, which
3008 indicates to the C program that it should include <termio.h> rather
3011 i_termios (i_termio.U):
3012 This variable conditionally defines the I_TERMIOS symbol, which
3013 indicates to the C program that the POSIX <termios.h> file is
3017 This variable conditionally defines I_TIME, which indicates
3018 to the C program that it should include <time.h>.
3020 i_unistd (i_unistd.U):
3021 This variable conditionally defines the I_UNISTD symbol, and indicates
3022 whether a C program should include <unistd.h>.
3024 i_ustat (i_ustat.U):
3025 This variable conditionally defines the I_USTAT symbol, and indicates
3026 whether a C program should include <ustat.h>.
3028 i_utime (i_utime.U):
3029 This variable conditionally defines the I_UTIME symbol, and indicates
3030 whether a C program should include <utime.h>.
3032 i_values (i_values.U):
3033 This variable conditionally defines the I_VALUES symbol, and indicates
3034 whether a C program may include <values.h> to get symbols like MAXLONG
3037 i_varargs (i_varhdr.U):
3038 This variable conditionally defines I_VARARGS, which indicates
3039 to the C program that it should include <varargs.h>.
3041 i_varhdr (i_varhdr.U):
3042 Contains the name of the header to be included to get va_dcl definition.
3043 Typically one of varargs.h or stdarg.h.
3045 i_vfork (i_vfork.U):
3046 This variable conditionally defines the I_VFORK symbol, and indicates
3047 whether a C program should include vfork.h.
3049 ignore_versioned_solibs (libs.U):
3050 This variable should be non-empty if non-versioned shared
3051 libraries (libfoo.so.x.y) are to be ignored (because they
3052 cannot be linked against).
3054 inc_version_list (inc_version_list.U):
3055 This variable specifies the list of subdirectories in over
3056 which perl.c:incpush() and lib/lib.pm will automatically
3057 search when adding directories to @INC. The elements in
3058 the list are separated by spaces. This is only useful
3059 if you have a perl library directory tree structured like the
3060 default one. See INSTALL for how this works. The versioned
3061 site_perl directory was introduced in 5.005, so that is the
3062 lowest possible value.
3064 inc_version_list_init (inc_version_list.U):
3065 This variable holds the same list as inc_version_list, but
3066 each item is enclosed in double quotes and separated by commas,
3067 suitable for use in the PERL_INC_VERSION_LIST initialization.
3070 This variable must preceed the normal include path to get hte
3071 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
3072 Value can be "" or "/bsd43" on mips.
3075 This variable is defined but not used by Configure.
3076 The value is a plain '' and is not useful.
3078 installarchlib (archlib.U):
3079 This variable is really the same as archlibexp but may differ on
3080 those systems using AFS. For extra portability, only this variable
3081 should be used in makefiles.
3084 This variable is the same as binexp unless AFS is running in which case
3085 the user is explicitely prompted for it. This variable should always
3086 be used in your makefiles for maximum portability.
3088 installhtml1dir (html1dir.U):
3089 This variable is really the same as html1direxp, unless you are
3090 using a different installprefix. For extra portability, you
3091 should only use this variable within your makefiles.
3093 installhtml3dir (html3dir.U):
3094 This variable is really the same as html3direxp, unless you are
3095 using a different installprefix. For extra portability, you
3096 should only use this variable within your makefiles.
3098 installman1dir (man1dir.U):
3099 This variable is really the same as man1direxp, unless you are using
3100 AFS in which case it points to the read/write location whereas
3101 man1direxp only points to the read-only access location. For extra
3102 portability, you should only use this variable within your makefiles.
3104 installman3dir (man3dir.U):
3105 This variable is really the same as man3direxp, unless you are using
3106 AFS in which case it points to the read/write location whereas
3107 man3direxp only points to the read-only access location. For extra
3108 portability, you should only use this variable within your makefiles.
3110 installprefix (installprefix.U):
3111 This variable holds the name of the directory below which
3112 "make install" will install the package. For most users, this
3113 is the same as prefix. However, it is useful for
3114 installing the software into a different (usually temporary)
3115 location after which it can be bundled up and moved somehow
3116 to the final location specified by prefix.
3118 installprefixexp (installprefix.U):
3119 This variable holds the full absolute path of installprefix
3120 with all ~-expansion done.
3122 installprivlib (privlib.U):
3123 This variable is really the same as privlibexp but may differ on
3124 those systems using AFS. For extra portability, only this variable
3125 should be used in makefiles.
3127 installscript (scriptdir.U):
3128 This variable is usually the same as scriptdirexp, unless you are on
3129 a system running AFS, in which case they may differ slightly. You
3130 should always use this variable within your makefiles for portability.
3132 installsitearch (sitearch.U):
3133 This variable is really the same as sitearchexp but may differ on
3134 those systems using AFS. For extra portability, only this variable
3135 should be used in makefiles.
3137 installsitebin (sitebin.U):
3138 This variable is usually the same as sitebinexp, unless you are on
3139 a system running AFS, in which case they may differ slightly. You
3140 should always use this variable within your makefiles for portability.
3142 installsitehtml1 (sitehtml1.U):
3143 This variable is really the same as sitehtml1exp, unless you are using
3144 AFS in which case it points to the read/write location whereas
3145 html1direxp only points to the read-only access location. For extra
3146 portability, you should only use this variable within your makefiles.
3148 installsitehtml3 (sitehtml3.U):
3149 This variable is really the same as sitehtml3exp, unless you are using
3150 AFS in which case it points to the read/write location whereas
3151 html3direxp only points to the read-only access location. For extra
3152 portability, you should only use this variable within your makefiles.
3154 installsitelib (sitelib.U):
3155 This variable is really the same as sitelibexp but may differ on
3156 those systems using AFS. For extra portability, only this variable
3157 should be used in makefiles.
3159 installsiteman1 (siteman1.U):
3160 This variable is really the same as siteman1exp, unless you are using
3161 AFS in which case it points to the read/write location whereas
3162 man1direxp only points to the read-only access location. For extra
3163 portability, you should only use this variable within your makefiles.
3165 installsiteman3 (siteman3.U):
3166 This variable is really the same as siteman3exp, unless you are using
3167 AFS in which case it points to the read/write location whereas
3168 man3direxp only points to the read-only access location. For extra
3169 portability, you should only use this variable within your makefiles.
3171 installsitescript (sitescript.U):
3172 This variable is usually the same as sitescriptexp, unless you are on
3173 a system running AFS, in which case they may differ slightly. You
3174 should always use this variable within your makefiles for portability.
3176 installstyle (installstyle.U):
3177 This variable describes the "style" of the perl installation.
3178 This is intended to be useful for tools that need to
3179 manipulate entire perl distributions. Perl itself doesn't use
3180 this to find its libraries -- the library directories are
3181 stored directly in Config.pm. Currently, there are only two
3182 styles: "lib" and "lib/perl5". The default library locations
3183 (e.g. privlib, sitelib) are either $prefix/lib or
3184 $prefix/lib/perl5. The former is useful if $prefix is a
3185 directory dedicated to perl (e.g. /opt/perl), while the latter
3186 is useful if $prefix is shared by many packages, e.g. if
3189 Unfortunately, while this "style" variable is used to set
3190 defaults for all three directory hierarchies (core, vendor, and
3191 site), there is no guarantee that the same style is actually
3192 appropriate for all those directories. For example, $prefix
3193 might be /opt/perl, but $siteprefix might be /usr/local.
3194 (Perhaps, in retrospect, the "lib" style should never have been
3195 supported, but it did seem like a nice idea at the time.)
3197 The situation is even less clear for tools such as MakeMaker
3198 that can be used to install additional modules into
3199 non-standard places. For example, if a user intends to install
3200 a module into a private directory (perhaps by setting PREFIX on
3201 the Makefile.PL command line), then there is no reason to
3202 assume that the Configure-time $installstyle setting will be
3203 relevant for that PREFIX.
3205 This may later be extended to include other information, so
3206 be careful with pattern-matching on the results.
3208 For compatibility with perl5.005 and earlier, the default
3209 setting is based on whether or not $prefix contains the string
3212 installusrbinperl (instubperl.U):
3213 This variable tells whether Perl should be installed also as
3214 /usr/bin/perl in addition to
3217 installvendorarch (vendorarch.U):
3218 This variable is really the same as vendorarchexp but may differ on
3219 those systems using AFS. For extra portability, only this variable
3220 should be used in makefiles.
3222 installvendorbin (vendorbin.U):
3223 This variable is really the same as vendorbinexp but may differ on
3224 those systems using AFS. For extra portability, only this variable
3225 should be used in makefiles.
3227 installvendorhtml1 (vendorhtml1.U):
3228 This variable is really the same as vendorhtml1exp but may differ on
3229 those systems using AFS. For extra portability, only this variable
3230 should be used in makefiles.
3232 installvendorhtml3 (vendorhtml3.U):
3233 This variable is really the same as vendorhtml3exp but may differ on
3234 those systems using AFS. For extra portability, only this variable
3235 should be used in makefiles.
3237 installvendorlib (vendorlib.U):
3238 This variable is really the same as vendorlibexp but may differ on
3239 those systems using AFS. For extra portability, only this variable
3240 should be used in makefiles.
3242 installvendorman1 (vendorman1.U):
3243 This variable is really the same as vendorman1exp but may differ on
3244 those systems using AFS. For extra portability, only this variable
3245 should be used in makefiles.
3247 installvendorman3 (vendorman3.U):
3248 This variable is really the same as vendorman3exp but may differ on
3249 those systems using AFS. For extra portability, only this variable
3250 should be used in makefiles.
3252 installvendorscript (vendorscript.U):
3253 This variable is really the same as vendorscriptexp but may differ on
3254 those systems using AFS. For extra portability, only this variable
3255 should be used in makefiles.
3257 intsize (intsize.U):
3258 This variable contains the value of the INTSIZE symbol, which
3259 indicates to the C program how many bytes there are in an int.
3261 issymlink (issymlink.U):
3262 This variable holds the test command to test for a symbolic link
3263 (if they are supported). Typical values include 'test -h' and
3266 ivdformat (perlxvf.U):
3267 This variable contains the format string used for printing
3268 a Perl IV as a signed decimal integer.
3271 This variable is the size of an IV in bytes.
3274 This variable contains the C type used for Perl's IV.
3276 known_extensions (Extensions.U):
3277 This variable holds a list of all XS extensions included in
3281 This variable is defined but not used by Configure.
3282 The value is a plain '' and is not useful.
3285 This variable indicates the program to be used to link
3286 libraries for dynamic loading. On some systems, it is 'ld'.
3287 On ELF systems, it should be $cc. Mostly, we'll try to respect
3288 the hint file setting.
3290 lddlflags (dlsrc.U):
3291 This variable contains any special flags that might need to be
3292 passed to $ld to create a shared library suitable for dynamic
3293 loading. It is up to the makefile to use it. For hpux, it
3294 should be '-b'. For sunos 4.1, it is empty.
3296 ldflags (ccflags.U):
3297 This variable contains any additional C loader flags desired by
3298 the user. It is up to the Makefile to use this.
3300 ldflags_uselargefiles (uselfs.U):
3301 This variable contains the loader flags needed by large file builds
3302 and added to ldflags by hints files.
3304 ldlibpthname (libperl.U):
3305 This variable holds the name of the shared library
3306 search path, often LD_LIBRARY_PATH. To get an empty
3307 string, the hints file must set this to 'none'.
3310 This variable is used internally by Configure to determine the
3311 full pathname (if any) of the less program. After Configure runs,
3312 the value is reset to a plain "less" and is not useful.
3315 This is an old synonym for _a.
3318 This variable contains the location of the C library.
3320 libperl (libperl.U):
3321 The perl executable is obtained by linking perlmain.c with
3322 libperl, any static extensions (usually just DynaLoader),
3323 and any other libraries needed on this system. libperl
3324 is usually libperl.a, but can also be libperl.so.xxx if
3325 the user wishes to build a perl executable with a shared
3329 This variable holds the general path (space-separated) used to find
3330 libraries. It is intended to be used by other units.
3333 This variable holds the additional libraries we want to use.
3334 It is up to the Makefile to deal with it. The list can be empty.
3337 This variable holds the directory names aka dirnames of the libraries
3338 we found and accepted, duplicates are removed.
3341 This variable holds the filenames aka basenames of the libraries
3342 we found and accepted.
3345 This variable holds the full pathnames of the libraries
3346 we found and accepted.
3349 This variable holds the directory names probed for libraries.
3351 libswanted (Myinit.U):
3352 This variable holds a list of all the libraries we want to
3353 search. The order is chosen to pick up the c library
3354 ahead of ucb or bsd libraries for SVR4.
3356 libswanted_uselargefiles (uselfs.U):
3357 This variable contains the libraries needed by large file builds
3358 and added to ldflags by hints files. It is a space separated list
3359 of the library names without the "lib" prefix or any suffix, just
3363 This variable is defined but not used by Configure.
3364 The value is a plain '' and is not useful.
3367 This variable is defined but not used by Configure.
3368 The value is a plain '' and is not useful.
3370 lkflags (ccflags.U):
3371 This variable contains any additional C partial linker flags desired by
3372 the user. It is up to the Makefile to use this.
3375 This variable is used internally by Configure to determine the
3376 full pathname (if any) of the ln program. After Configure runs,
3377 the value is reset to a plain "ln" and is not useful.
3380 This variable holds the name of the command to make
3381 symbolic links (if they are supported). It can be used
3382 in the Makefile. It is either 'ln -s' or 'ln'
3384 localtime_r_proto (d_localtime_r.U):
3385 This variable encodes the prototype of localtime_r.
3386 It is zero if d_localtime_r is undef, and one of the
3387 REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
3390 locincpth (ccflags.U):
3391 This variable contains a list of additional directories to be
3392 searched by the compiler. The appropriate '-I' directives will
3393 be added to ccflags. This is intended to simplify setting
3394 local directories from the Configure command line.
3395 It's not much, but it parallels the loclibpth stuff in libpth.U.
3397 loclibpth (libpth.U):
3398 This variable holds the paths (space-separated) used to find local
3399 libraries. It is prepended to libpth, and is intended to be easily
3400 set from the command line.
3402 longdblsize (d_longdbl.U):
3403 This variable contains the value of the LONG_DOUBLESIZE symbol, which
3404 indicates to the C program how many bytes there are in a long double,
3405 if this system supports long doubles.
3407 longlongsize (d_longlong.U):
3408 This variable contains the value of the LONGLONGSIZE symbol, which
3409 indicates to the C program how many bytes there are in a long long,
3410 if this system supports long long.
3412 longsize (intsize.U):
3413 This variable contains the value of the LONGSIZE symbol, which
3414 indicates to the C program how many bytes there are in a long.
3417 This variable is defined but not used by Configure.
3418 The value is a plain '' and is not useful.
3421 This variable is defined but not used by Configure.
3422 The value is a plain '' and is not useful.
3425 This variable is used internally by Configure to determine the
3426 full pathname (if any) of the ls program. After Configure runs,
3427 the value is reset to a plain "ls" and is not useful.
3429 lseeksize (lseektype.U):
3430 This variable defines lseektype to be something like off_t, long,
3431 or whatever type is used to declare lseek offset's type in the
3432 kernel (which also appears to be lseek's return type).
3434 lseektype (lseektype.U):
3435 This variable defines lseektype to be something like off_t, long,
3436 or whatever type is used to declare lseek offset's type in the
3437 kernel (which also appears to be lseek's return type).
3440 This variable is defined but not used by Configure.
3441 The value is a plain '' and is not useful.
3444 This variable is defined but not used by Configure.
3445 The value is a plain '' and is not useful.
3448 This variable is used internally by Configure to determine the
3449 full pathname (if any) of the make program. After Configure runs,
3450 the value is reset to a plain "make" and is not useful.
3452 make_set_make (make.U):
3453 Some versions of 'make' set the variable MAKE. Others do not.
3454 This variable contains the string to be included in Makefile.SH
3455 so that MAKE is set if needed, and not if not needed.
3456 Possible values are:
3458 make_set_make='#' # If your make program handles this for you,
3460 make_set_make="MAKE=$make" # if it doesn't.
3462 This uses a comment character to distinguish a
3463 'set' value (from a previous config.sh or Configure '-D' option)
3464 from an uncomputed value.
3466 mallocobj (mallocsrc.U):
3467 This variable contains the name of the malloc.o that this package
3468 generates, if that malloc.o is preferred over the system malloc.
3469 Otherwise the value is null. This variable is intended for generating
3470 Makefiles. See mallocsrc.
3472 mallocsrc (mallocsrc.U):
3473 This variable contains the name of the malloc.c that comes with
3474 the package, if that malloc.c is preferred over the system malloc.
3475 Otherwise the value is null. This variable is intended for generating
3478 malloctype (mallocsrc.U):
3479 This variable contains the kind of ptr returned by malloc and realloc.
3481 man1dir (man1dir.U):
3482 This variable contains the name of the directory in which manual
3483 source pages are to be put. It is the responsibility of the
3484 Makefile.SH to get the value of this into the proper command.
3485 You must be prepared to do the ~name expansion yourself.
3487 man1direxp (man1dir.U):
3488 This variable is the same as the man1dir variable, but is filename
3489 expanded at configuration time, for convenient use in makefiles.
3491 man1ext (man1dir.U):
3492 This variable contains the extension that the manual page should
3493 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
3496 man3dir (man3dir.U):
3497 This variable contains the name of the directory in which manual
3498 source pages are to be put. It is the responsibility of the
3499 Makefile.SH to get the value of this into the proper command.
3500 You must be prepared to do the ~name expansion yourself.
3502 man3direxp (man3dir.U):
3503 This variable is the same as the man3dir variable, but is filename
3504 expanded at configuration time, for convenient use in makefiles.
3506 man3ext (man3dir.U):
3507 This variable contains the extension that the manual page should
3508 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
3511 mips_type (usrinc.U):
3512 This variable holds the environment type for the mips system.
3513 Possible values are "BSD 4.3" and "System V".
3516 This variable is used internally by Configure to determine the
3517 full pathname (if any) of the mkdir program. After Configure runs,
3518 the value is reset to a plain "mkdir" and is not useful.
3520 mmaptype (d_mmap.U):
3521 This symbol contains the type of pointer returned by mmap()
3522 (and simultaneously the type of the first argument).
3523 It can be 'void *' or 'caddr_t'.
3525 modetype (modetype.U):
3526 This variable defines modetype to be something like mode_t,
3527 int, unsigned short, or whatever type is used to declare file
3528 modes for system calls.
3531 This variable is used internally by Configure to determine the
3532 full pathname (if any) of the more program. After Configure runs,
3533 the value is reset to a plain "more" and is not useful.
3535 multiarch (multiarch.U):
3536 This variable conditionally defines the MULTIARCH symbol
3537 which signifies the presence of multiplatform files.
3538 This is normally set by hints files.
3541 This variable is defined but not used by Configure.
3542 The value is a plain '' and is not useful.
3544 myarchname (archname.U):
3545 This variable holds the architecture name computed by Configure in
3546 a previous run. It is not intended to be perused by any user and
3547 should never be set in a hint file.
3549 mydomain (myhostname.U):
3550 This variable contains the eventual value of the MYDOMAIN symbol,
3551 which is the domain of the host the program is going to run on.
3552 The domain must be appended to myhostname to form a complete host name.
3553 The dot comes with mydomain, and need not be supplied by the program.
3555 myhostname (myhostname.U):
3556 This variable contains the eventual value of the MYHOSTNAME symbol,
3557 which is the name of the host the program is going to run on.
3558 The domain is not kept with hostname, but must be gotten from mydomain.
3559 The dot comes with mydomain, and need not be supplied by the program.
3561 myuname (Oldconfig.U):
3562 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
3563 pseudo variables assignments in the output are stripped, thank you. The
3564 whole thing is then lower-cased.
3567 This variable contains the '-n' flag if that is what causes the echo
3568 command to suppress newline. Otherwise it is null. Correct usage is
3569 $echo $n "prompt for a question: $c".
3571 need_va_copy (need_va_copy.U):
3572 This symbol, if defined, indicates that the system stores
3573 the variable argument list datatype, va_list, in a format
3574 that cannot be copied by simple assignment, so that some
3575 other means must be used when copying is required.
3576 As such systems vary in their provision (or non-provision)
3577 of copying mechanisms, handy.h defines a platform-
3578 independent macro, Perl_va_copy(src, dst), to do the job.
3580 netdb_hlen_type (netdbtype.U):
3581 This variable holds the type used for the 2nd argument to
3582 gethostbyaddr(). Usually, this is int or size_t or unsigned.
3583 This is only useful if you have gethostbyaddr(), naturally.
3585 netdb_host_type (netdbtype.U):
3586 This variable holds the type used for the 1st argument to
3587 gethostbyaddr(). Usually, this is char * or void *, possibly
3588 with or without a const prefix.
3589 This is only useful if you have gethostbyaddr(), naturally.
3591 netdb_name_type (netdbtype.U):
3592 This variable holds the type used for the argument to
3593 gethostbyname(). Usually, this is char * or const char *.
3594 This is only useful if you have gethostbyname(), naturally.
3596 netdb_net_type (netdbtype.U):
3597 This variable holds the type used for the 1st argument to
3598 getnetbyaddr(). Usually, this is int or long.
3599 This is only useful if you have getnetbyaddr(), naturally.
3602 This variable is used internally by Configure to determine the
3603 full pathname (if any) of the nm program. After Configure runs,
3604 the value is reset to a plain "nm" and is not useful.
3607 This variable holds the options that may be necessary for nm.
3609 nm_so_opt (usenm.U):
3610 This variable holds the options that may be necessary for nm
3611 to work on a shared library but that can not be used on an
3612 archive library. Currently, this is only used by Linux, where
3613 nm --dynamic is *required* to get symbols from an ELF library which
3614 has been stripped, but nm --dynamic is *fatal* on an archive library.
3615 Maybe Linux should just always set usenm=false.
3617 nonxs_ext (Extensions.U):
3618 This variable holds a list of all non-xs extensions included
3619 in the package. All of them will be built.
3622 This variable is used internally by Configure to determine the
3623 full pathname (if any) of the nroff program. After Configure runs,
3624 the value is reset to a plain "nroff" and is not useful.
3626 nvEUformat (perlxvf.U):
3627 This variable contains the format string used for printing
3628 a Perl NV using %E-ish floating point format.
3630 nvFUformat (perlxvf.U):
3631 This variable confains the format string used for printing
3632 a Perl NV using %F-ish floating point format.
3634 nvGUformat (perlxvf.U):
3635 This variable contains the format string used for printing
3636 a Perl NV using %G-ish floating point format.
3638 nv_preserves_uv_bits (perlxv.U):
3639 This variable indicates how many of bits type uvtype
3640 a variable nvtype can preserve.
3642 nveformat (perlxvf.U):
3643 This variable contains the format string used for printing
3644 a Perl NV using %e-ish floating point format.
3646 nvfformat (perlxvf.U):
3647 This variable confains the format string used for printing
3648 a Perl NV using %f-ish floating point format.
3650 nvgformat (perlxvf.U):
3651 This variable contains the format string used for printing
3652 a Perl NV using %g-ish floating point format.
3655 This variable is the size of an NV in bytes.
3658 This variable contains the C type used for Perl's NV.
3660 o_nonblock (nblock_io.U):
3661 This variable bears the symbol value to be used during open() or fcntl()
3662 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3663 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3664 but that is only supported by some devices.
3667 This is an old synonym for _o.
3669 old_pthread_create_joinable (d_pthrattrj.U):
3670 This variable defines the constant to use for creating joinable
3671 (aka undetached) pthreads. Unused if pthread.h defines
3672 PTHREAD_CREATE_JOINABLE. If used, possible values are
3673 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3675 optimize (ccflags.U):
3676 This variable contains any optimizer/debugger flag that should be used.
3677 It is up to the Makefile to use it.
3679 orderlib (orderlib.U):
3680 This variable is "true" if the components of libraries must be ordered
3681 (with `lorder $* | tsort`) before placing them in an archive. Set to
3682 "false" if ranlib or ar can generate random libraries.
3684 osname (Oldconfig.U):
3685 This variable contains the operating system name (e.g. sunos,
3686 solaris, hpux, etc.). It can be useful later on for setting
3687 defaults. Any spaces are replaced with underscores. It is set
3688 to a null string if we can't figure it out.
3690 osvers (Oldconfig.U):
3691 This variable contains the operating system version (e.g.
3692 4.1.3, 5.2, etc.). It is primarily used for helping select
3693 an appropriate hints file, but might be useful elsewhere for
3694 setting defaults. It is set to '' if we can't figure it out.
3695 We try to be flexible about how much of the version number
3696 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3697 same for this package, hints files might just be os_4.0 or
3698 os_4.1, etc., not keeping separate files for each little release.
3700 otherlibdirs (otherlibdirs.U):
3701 This variable contains a colon-separated set of paths for the perl
3702 binary to search for additional library files or modules.
3703 These directories will be tacked to the end of @INC.
3704 Perl will automatically search below each path for version-
3705 and architecture-specific directories. See inc_version_list
3707 A value of ' ' means 'none' and is used to preserve this value
3708 for the next run through Configure.
3710 package (package.U):
3711 This variable contains the name of the package being constructed.
3712 It is primarily intended for the use of later Configure units.
3715 This variable contains the name of the preferred pager on the system.
3716 Usual values are (the full pathnames of) more, less, pg, or cat.
3719 This variable contains a command that produces the text of the
3720 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3721 "ypcat passwd" when NIS is used.
3722 On some systems, such as os390, there may be no equivalent
3723 command, in which case this variable is unset.
3725 patchlevel (patchlevel.U):
3726 The patchlevel level of this package.
3727 The value of patchlevel comes from the patchlevel.h file.
3728 In a version number such as 5.6.1, this is the "6".
3729 In patchlevel.h, this is referred to as "PERL_VERSION".
3732 This is an old synonym for p_ in Head.U, the character
3733 used to separate elements in the command shell search PATH.
3736 This variable contains the full path (if any) to a previously
3737 installed perl5.005 or later suitable for running the script
3738 to determine inc_version_list.
3741 This variable is defined but not used by Configure.
3742 The value is a plain '' and is not useful.
3744 perl_patchlevel (patchlevel.U):
3745 This is the Perl patch level, a numeric change identifier,
3746 as defined by whichever source code maintenance system
3747 is used to maintain the patches; currently Perforce.
3748 It does not correlate with the Perl version numbers or
3749 the maintenance versus development dichotomy except
3750 by also being increasing.
3752 perladmin (perladmin.U):
3753 Electronic mail address of the perl5 administrator.
3756 The list of libraries needed by Perl only (any libraries needed
3757 by extensions only will by dropped, if using dynamic loading).
3759 perlpath (perlpath.U):
3760 This variable contains the eventual value of the PERLPATH symbol,
3761 which contains the name of the perl interpreter to be used in
3762 shell scripts and in the "eval 'exec'" idiom. This variable is
3763 not necessarily the pathname of the file containing the perl
3764 interpreter; you must append the executable extension (_exe) if
3765 it is not already present. Note that Perl code that runs during
3766 the Perl build process cannot reference this variable, as Perl
3767 may not have been installed, or even if installed, may be a
3768 different version of Perl.
3771 This variable is used internally by Configure to determine the
3772 full pathname (if any) of the pg program. After Configure runs,
3773 the value is reset to a plain "pg" and is not useful.
3775 phostname (myhostname.U):
3776 This variable contains the eventual value of the PHOSTNAME symbol,
3777 which is a command that can be fed to popen() to get the host name.
3778 The program should probably not presume that the domain is or isn't
3781 pidtype (pidtype.U):
3782 This variable defines PIDTYPE to be something like pid_t, int,
3783 ushort, or whatever type is used to declare process ids in the kernel.
3786 Holds the private path used by Configure to find out the libraries.
3787 Its value is prepend to libpth. This variable takes care of special
3788 machines, like the mips. Usually, it should be empty.
3790 pm_apiversion (xs_apiversion.U):
3791 This variable contains the version of the oldest perl
3792 compatible with the present perl. (That is, pure perl modules
3793 written for $pm_apiversion will still work for the current
3794 version). perl.c:incpush() and lib/lib.pm will automatically
3795 search in $sitelib for older directories across major versions
3796 back to pm_apiversion. This is only useful if you have a perl
3797 library directory tree structured like the default one. The
3798 versioned site_perl library was introduced in 5.005, so that's
3799 the default setting for this variable. It's hard to imagine
3800 it changing before Perl6. It is included here for symmetry
3801 with xs_apiveprsion -- the searching algorithms will
3802 (presumably) be similar.
3803 See the INSTALL file for how this works.
3806 This variable is defined but not used by Configure.
3807 The value is a plain '' and is not useful.
3810 This variable is defined but not used by Configure.
3811 The value is a plain '' and is not useful.
3814 This variable holds the name of the directory below which the
3815 user will install the package. Usually, this is /usr/local, and
3816 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3817 man pages in /usr/local/man, etc. It is only used to set defaults
3818 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3820 prefixexp (prefix.U):
3821 This variable holds the full absolute path of the directory below
3822 which the user will install the package. Derived from prefix.
3824 privlib (privlib.U):
3825 This variable contains the eventual value of the PRIVLIB symbol,
3826 which is the name of the private library for this package. It may
3827 have a ~ on the front. It is up to the makefile to eventually create
3828 this directory while performing installation (with ~ substitution).
3830 privlibexp (privlib.U):
3831 This variable is the ~name expanded version of privlib, so that you
3832 may use it directly in Makefiles or shell scripts.
3834 procselfexe (d_procselfexe.U):
3835 If d_procselfexe is defined, $procselfexe is the filename
3836 of the symbolic link pointing to the absolute pathname of
3837 the executing program.
3839 prototype (prototype.U):
3840 This variable holds the eventual value of CAN_PROTOTYPE, which
3841 indicates the C compiler can handle funciton prototypes.
3843 ptrsize (ptrsize.U):
3844 This variable contains the value of the PTRSIZE symbol, which
3845 indicates to the C program how many bytes there are in a pointer.
3847 quadkind (quadtype.U):
3848 This variable, if defined, encodes the type of a quad:
3849 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3851 quadtype (quadtype.U):
3852 This variable defines Quad_t to be something like long, int,
3853 long long, int64_t, or whatever type is used for 64-bit integers.
3855 randbits (randfunc.U):
3856 Indicates how many bits are produced by the function used to
3857 generate normalized random numbers.
3859 randfunc (randfunc.U):
3860 Indicates the name of the random number function to use.
3861 Values include drand48, random, and rand. In C programs,
3862 the 'Drand01' macro is defined to generate uniformly distributed
3863 random numbers over the range [0., 1.[ (see drand01 and nrand).
3865 random_r_proto (d_random_r.U):
3866 This variable encodes the prototype of random_r.
3867 It is zero if d_random_r is undef, and one of the
3868 REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
3871 randseedtype (randfunc.U):
3872 Indicates the type of the argument of the seedfunc.
3874 ranlib (orderlib.U):
3875 This variable is set to the pathname of the ranlib program, if it is
3876 needed to generate random libraries. Set to ":" if ar can generate
3877 random libraries or if random libraries are not supported
3879 rd_nodata (nblock_io.U):
3880 This variable holds the return code from read() when no data is
3881 present. It should be -1, but some systems return 0 when O_NDELAY is
3882 used, which is a shame because you cannot make the difference between
3883 no data and an EOF.. Sigh!
3885 readdir64_r_proto (d_readdir64_r.U):
3886 This variable encodes the prototype of readdir64_r.
3887 It is zero if d_readdir64_r is undef, and one of the
3888 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
3891 readdir_r_proto (d_readdir_r.U):
3892 This variable encodes the prototype of readdir_r.
3893 It is zero if d_readdir_r is undef, and one of the
3894 REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
3897 revision (patchlevel.U):
3898 The value of revision comes from the patchlevel.h file.
3899 In a version number such as 5.6.1, this is the "5".
3900 In patchlevel.h, this is referred to as "PERL_REVISION".
3903 This variable is used internally by Configure to determine the
3904 full pathname (if any) of the rm program. After Configure runs,
3905 the value is reset to a plain "rm" and is not useful.
3908 This variable is defined but not used by Configure.
3909 The value is a plain '' and is not useful.
3912 This variable contains the command used by Configure
3913 to copy and execute a cross-compiled executable in the
3914 target host. Useful and available only during Perl build.
3915 Empty string '' if not cross-compiling.
3918 This variable contains 'true' or 'false' depending whether the
3919 nm extraction should be performed or not, according to the value
3920 of usenm and the flags on the Configure command line.
3922 sPRIEUldbl (longdblfio.U):
3923 This variable, if defined, contains the string used by stdio to
3924 format long doubles (format 'E') for output.
3925 The 'U' in the name is to separate this from sPRIeldbl so that even
3926 case-blind systems can see the difference.
3928 sPRIFUldbl (longdblfio.U):
3929 This variable, if defined, contains the string used by stdio to
3930 format long doubles (format 'F') for output.
3931 The 'U' in the name is to separate this from sPRIfldbl so that even
3932 case-blind systems can see the difference.
3934 sPRIGUldbl (longdblfio.U):
3935 This variable, if defined, contains the string used by stdio to
3936 format long doubles (format 'G') for output.
3937 The 'U' in the name is to separate this from sPRIgldbl so that even
3938 case-blind systems can see the difference.
3940 sPRIXU64 (quadfio.U):
3941 This variable, if defined, contains the string used by stdio to
3942 format 64-bit hExADECimAl numbers (format 'X') for output.
3943 The 'U' in the name is to separate this from sPRIx64 so that even
3944 case-blind systems can see the difference.
3946 sPRId64 (quadfio.U):
3947 This variable, if defined, contains the string used by stdio to
3948 format 64-bit decimal numbers (format 'd') for output.
3950 sPRIeldbl (longdblfio.U):
3951 This variable, if defined, contains the string used by stdio to
3952 format long doubles (format 'e') for output.
3954 sPRIfldbl (longdblfio.U):
3955 This variable, if defined, contains the string used by stdio to
3956 format long doubles (format 'f') for output.
3958 sPRIgldbl (longdblfio.U):
3959 This variable, if defined, contains the string used by stdio to
3960 format long doubles (format 'g') for output.
3962 sPRIi64 (quadfio.U):
3963 This variable, if defined, contains the string used by stdio to
3964 format 64-bit decimal numbers (format 'i') for output.
3966 sPRIo64 (quadfio.U):
3967 This variable, if defined, contains the string used by stdio to
3968 format 64-bit octal numbers (format 'o') for output.
3970 sPRIu64 (quadfio.U):
3971 This variable, if defined, contains the string used by stdio to
3972 format 64-bit unsigned decimal numbers (format 'u') for output.
3974 sPRIx64 (quadfio.U):
3975 This variable, if defined, contains the string used by stdio to
3976 format 64-bit hexadecimal numbers (format 'x') for output.
3978 sSCNfldbl (longdblfio.U):
3979 This variable, if defined, contains the string used by stdio to
3980 format long doubles (format 'f') for input.
3982 sched_yield (d_pthread_y.U):
3983 This variable defines the way to yield the execution
3984 of the current thread.
3986 scriptdir (scriptdir.U):
3987 This variable holds the name of the directory in which the user wants
3988 to put publicly scripts for the package in question. It is either
3989 the same directory as for binaries, or a special one that can be
3990 mounted across different architectures, like /usr/share. Programs
3991 must be prepared to deal with ~name expansion.
3993 scriptdirexp (scriptdir.U):
3994 This variable is the same as scriptdir, but is filename expanded
3995 at configuration time, for programs not wanting to bother with it.
3998 This variable is used internally by Configure to determine the
3999 full pathname (if any) of the sed program. After Configure runs,
4000 the value is reset to a plain "sed" and is not useful.
4002 seedfunc (randfunc.U):
4003 Indicates the random number generating seed function.
4004 Values include srand48, srandom, and srand.
4006 selectminbits (selectminbits.U):
4007 This variable holds the minimum number of bits operated by select.
4008 That is, if you do select(n, ...), how many bits at least will be
4009 cleared in the masks if some activity is detected. Usually this
4010 is either n or 32*ceil(n/32), especially many little-endians do
4011 the latter. This is only useful if you have select(), naturally.
4013 selecttype (selecttype.U):
4014 This variable holds the type used for the 2nd, 3rd, and 4th
4015 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
4016 is defined, and 'int *' otherwise. This is only useful if you
4017 have select(), naturally.
4020 This variable is defined but not used by Configure.
4021 The value is a plain '' and is not useful.
4023 setgrent_r_proto (d_setgrent_r.U):
4024 This variable encodes the prototype of setgrent_r.
4025 It is zero if d_setgrent_r is undef, and one of the
4026 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
4029 sethostent_r_proto (d_sethostent_r.U):
4030 This variable encodes the prototype of sethostent_r.
4031 It is zero if d_sethostent_r is undef, and one of the
4032 REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
4035 setlocale_r_proto (d_setlocale_r.U):
4036 This variable encodes the prototype of setlocale_r.
4037 It is zero if d_setlocale_r is undef, and one of the
4038 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
4041 setnetent_r_proto (d_setnetent_r.U):
4042 This variable encodes the prototype of setnetent_r.
4043 It is zero if d_setnetent_r is undef, and one of the
4044 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
4047 setprotoent_r_proto (d_setprotoent_r.U):
4048 This variable encodes the prototype of setprotoent_r.
4049 It is zero if d_setprotoent_r is undef, and one of the
4050 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
4053 setpwent_r_proto (d_setpwent_r.U):
4054 This variable encodes the prototype of setpwent_r.
4055 It is zero if d_setpwent_r is undef, and one of the
4056 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
4059 setservent_r_proto (d_setservent_r.U):
4060 This variable encodes the prototype of setservent_r.
4061 It is zero if d_setservent_r is undef, and one of the
4062 REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
4066 This variable contains the full pathname of the shell used
4067 on this system to execute Bourne shell scripts. Usually, this will be
4068 /bin/sh, though it's possible that some systems will have /bin/ksh,
4069 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
4071 This unit comes before Options.U, so you can't set sh with a '-D'
4072 option, though you can override this (and startsh)
4073 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
4076 This variable is defined but not used by Configure.
4077 The value is a plain '' and is not useful.
4079 sharpbang (spitshell.U):
4080 This variable contains the string #! if this system supports that
4083 shmattype (d_shmat.U):
4084 This symbol contains the type of pointer returned by shmat().
4085 It can be 'void *' or 'char *'.
4087 shortsize (intsize.U):
4088 This variable contains the value of the SHORTSIZE symbol which
4089 indicates to the C program how many bytes there are in a short.
4091 shrpenv (libperl.U):
4092 If the user builds a shared libperl.so, then we need to tell the
4093 'perl' executable where it will be able to find the installed libperl.so.
4094 One way to do this on some systems is to set the environment variable
4095 LD_RUN_PATH to the directory that will be the final location of the
4096 shared libperl.so. The makefile can use this with something like
4097 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
4099 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
4102 See the main perl Makefile.SH for actual working usage.
4103 Alternatively, we might be able to use a command line option such
4104 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
4105 $archlibexp/CORE (Linux).
4107 shsharp (spitshell.U):
4108 This variable tells further Configure units whether your sh can
4111 sig_count (sig_name.U):
4112 This variable holds a number larger than the largest valid
4113 signal number. This is usually the same as the NSIG macro.
4115 sig_name (sig_name.U):
4116 This variable holds the signal names, space separated. The leading
4117 SIG in signal name is removed. A ZERO is prepended to the list.
4118 This is currently not used, sig_name_init is used instead.
4120 sig_name_init (sig_name.U):
4121 This variable holds the signal names, enclosed in double quotes and
4122 separated by commas, suitable for use in the SIG_NAME definition
4123 below. A "ZERO" is prepended to the list, and the list is
4124 terminated with a plain 0. The leading SIG in signal names
4125 is removed. See sig_num.
4127 sig_num (sig_name.U):
4128 This variable holds the signal numbers, space separated. A ZERO is
4129 prepended to the list (corresponding to the fake SIGZERO).
4130 Those numbers correspond to the value of the signal listed
4131 in the same place within the sig_name list.
4132 This is currently not used, sig_num_init is used instead.
4134 sig_num_init (sig_name.U):
4135 This variable holds the signal numbers, enclosed in double quotes and
4136 separated by commas, suitable for use in the SIG_NUM definition
4137 below. A "ZERO" is prepended to the list, and the list is
4138 terminated with a plain 0.
4140 sig_size (sig_name.U):
4141 This variable contains the number of elements of the sig_name
4144 signal_t (d_voidsig.U):
4145 This variable holds the type of the signal handler (void or int).
4147 sitearch (sitearch.U):
4148 This variable contains the eventual value of the SITEARCH symbol,
4149 which is the name of the private library for this package. It may
4150 have a ~ on the front. It is up to the makefile to eventually create
4151 this directory while performing installation (with ~ substitution).
4152 The standard distribution will put nothing in this directory.
4153 After perl has been installed, users may install their own local
4154 architecture-dependent modules in this directory with
4155 MakeMaker Makefile.PL
4156 or equivalent. See INSTALL for details.
4158 sitearchexp (sitearch.U):
4159 This variable is the ~name expanded version of sitearch, so that you
4160 may use it directly in Makefiles or shell scripts.
4162 sitebin (sitebin.U):
4163 This variable holds the name of the directory in which the user wants
4164 to put add-on publicly executable files for the package in question. It
4165 is most often a local directory such as /usr/local/bin. Programs using
4166 this variable must be prepared to deal with ~name substitution.
4167 The standard distribution will put nothing in this directory.
4168 After perl has been installed, users may install their own local
4169 executables in this directory with
4170 MakeMaker Makefile.PL
4171 or equivalent. See INSTALL for details.
4173 sitebinexp (sitebin.U):
4174 This is the same as the sitebin variable, but is filename expanded at
4175 configuration time, for use in your makefiles.
4177 sitehtml1 (sitehtml1.U):
4178 This variable contains the name of the directory in which site-specific
4179 html source pages are to be put. It is the responsibility of the
4180 Makefile.SH to get the value of this into the proper command.
4181 You must be prepared to do the ~name expansion yourself.
4182 The standard distribution will put nothing in this directory.
4183 After perl has been installed, users may install their own local
4184 html pages in this directory with
4185 MakeMaker Makefile.PL
4186 or equivalent. See INSTALL for details.
4188 sitehtml1exp (sitehtml1.U):
4189 This variable is the same as the sitehtml1 variable, but is filename
4190 expanded at configuration time, for convenient use in makefiles.
4192 sitehtml3 (sitehtml3.U):
4193 This variable contains the name of the directory in which site-specific
4194 library html source pages are to be put. It is the responsibility of the
4195 Makefile.SH to get the value of this into the proper command.
4196 You must be prepared to do the ~name expansion yourself.
4197 The standard distribution will put nothing in this directory.
4198 After perl has been installed, users may install their own local
4199 library html pages in this directory with
4200 MakeMaker Makefile.PL
4201 or equivalent. See INSTALL for details.
4203 sitehtml3exp (sitehtml3.U):
4204 This variable is the same as the sitehtml3 variable, but is filename
4205 expanded at configuration time, for convenient use in makefiles.
4207 sitelib (sitelib.U):
4208 This variable contains the eventual value of the SITELIB symbol,
4209 which is the name of the private library for this package. It may
4210 have a ~ on the front. It is up to the makefile to eventually create
4211 this directory while performing installation (with ~ substitution).
4212 The standard distribution will put nothing in this directory.
4213 After perl has been installed, users may install their own local
4214 architecture-independent modules in this directory with
4215 MakeMaker Makefile.PL
4216 or equivalent. See INSTALL for details.
4218 sitelib_stem (sitelib.U):
4219 This variable is $sitelibexp with any trailing version-specific component
4220 removed. The elements in inc_version_list (inc_version_list.U) can
4221 be tacked onto this variable to generate a list of directories to search.
4223 sitelibexp (sitelib.U):
4224 This variable is the ~name expanded version of sitelib, so that you
4225 may use it directly in Makefiles or shell scripts.
4227 siteman1 (siteman1.U):
4228 This variable contains the name of the directory in which site-specific
4229 manual source pages are to be put. It is the responsibility of the
4230 Makefile.SH to get the value of this into the proper command.
4231 You must be prepared to do the ~name expansion yourself.
4232 The standard distribution will put nothing in this directory.
4233 After perl has been installed, users may install their own local
4234 man1 pages in this directory with
4235 MakeMaker Makefile.PL
4236 or equivalent. See INSTALL for details.
4238 siteman1exp (siteman1.U):
4239 This variable is the same as the siteman1 variable, but is filename
4240 expanded at configuration time, for convenient use in makefiles.
4242 siteman3 (siteman3.U):
4243 This variable contains the name of the directory in which site-specific
4244 library man source pages are to be put. It is the responsibility of the
4245 Makefile.SH to get the value of this into the proper command.
4246 You must be prepared to do the ~name expansion yourself.
4247 The standard distribution will put nothing in this directory.
4248 After perl has been installed, users may install their own local
4249 man3 pages in this directory with
4250 MakeMaker Makefile.PL
4251 or equivalent. See INSTALL for details.
4253 siteman3exp (siteman3.U):
4254 This variable is the same as the siteman3 variable, but is filename
4255 expanded at configuration time, for convenient use in makefiles.
4257 siteprefix (siteprefix.U):
4258 This variable holds the full absolute path of the directory below
4259 which the user will install add-on packages.
4260 See INSTALL for usage and examples.
4262 siteprefixexp (siteprefix.U):
4263 This variable holds the full absolute path of the directory below
4264 which the user will install add-on packages. Derived from siteprefix.
4266 sitescript (sitescript.U):
4267 This variable holds the name of the directory in which the user wants
4268 to put add-on publicly executable files for the package in question. It
4269 is most often a local directory such as /usr/local/bin. Programs using
4270 this variable must be prepared to deal with ~name substitution.
4271 The standard distribution will put nothing in this directory.
4272 After perl has been installed, users may install their own local
4273 scripts in this directory with
4274 MakeMaker Makefile.PL
4275 or equivalent. See INSTALL for details.
4277 sitescriptexp (sitescript.U):
4278 This is the same as the sitescript variable, but is filename expanded at
4279 configuration time, for use in your makefiles.
4281 sizesize (sizesize.U):
4282 This variable contains the size of a sizetype in bytes.
4284 sizetype (sizetype.U):
4285 This variable defines sizetype to be something like size_t,
4286 unsigned long, or whatever type is used to declare length
4287 parameters for string functions.
4290 This variable is defined but not used by Configure.
4291 The value is a plain '' and is not useful.
4294 This variable is defined but not used by Configure.
4295 The value is a plain '' and is not useful.
4298 This variable holds the extension used to identify shared libraries
4299 (also known as shared objects) on the system. Usually set to 'so'.
4301 sockethdr (d_socket.U):
4302 This variable has any cpp '-I' flags needed for socket support.
4304 socketlib (d_socket.U):
4305 This variable has the names of any libraries needed for socket support.
4307 socksizetype (socksizetype.U):
4308 This variable holds the type used for the size argument
4309 for various socket calls like accept. Usual values include
4310 socklen_t, size_t, and int.
4313 This variable is used internally by Configure to determine the
4314 full pathname (if any) of the sort program. After Configure runs,
4315 the value is reset to a plain "sort" and is not useful.
4317 spackage (package.U):
4318 This variable contains the name of the package being constructed,
4319 with the first letter uppercased, i.e. suitable for starting
4322 spitshell (spitshell.U):
4323 This variable contains the command necessary to spit out a runnable
4324 shell on this system. It is either cat or a grep '-v' for # comments.
4326 srand48_r_proto (d_srand48_r.U):
4327 This variable encodes the prototype of srand48_r.
4328 It is zero if d_srand48_r is undef, and one of the
4329 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
4332 srandom_r_proto (d_srandom_r.U):
4333 This variable encodes the prototype of srandom_r.
4334 It is zero if d_srandom_r is undef, and one of the
4335 REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
4339 This variable holds the path to the package source. It is up to
4340 the Makefile to use this variable and set VPATH accordingly to
4341 find the sources remotely.
4343 ssizetype (ssizetype.U):
4344 This variable defines ssizetype to be something like ssize_t,
4345 long or int. It is used by functions that return a count
4346 of bytes or an error condition. It must be a signed type.
4347 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
4349 startperl (startperl.U):
4350 This variable contains the string to put on the front of a perl
4351 script to make sure (hopefully) that it runs with perl and not some
4352 shell. Of course, that leading line must be followed by the classical
4354 eval 'exec perl -S $0 ${1+"$@"}'
4355 if $running_under_some_shell;
4356 to guarantee perl startup should the shell execute the script. Note
4357 that this magic incatation is not understood by csh.
4359 startsh (startsh.U):
4360 This variable contains the string to put on the front of a shell
4361 script to make sure (hopefully) that it runs with sh and not some
4364 static_ext (Extensions.U):
4365 This variable holds a list of XS extension files we want to
4366 link statically into the package. It is used by Makefile.
4368 stdchar (stdchar.U):
4369 This variable conditionally defines STDCHAR to be the type of char
4370 used in stdio.h. It has the values "unsigned char" or "char".
4372 stdio_base (d_stdstdio.U):
4373 This variable defines how, given a FILE pointer, fp, to access the
4374 _base field (or equivalent) of stdio.h's FILE structure. This will
4375 be used to define the macro FILE_base(fp).
4377 stdio_bufsiz (d_stdstdio.U):
4378 This variable defines how, given a FILE pointer, fp, to determine
4379 the number of bytes store in the I/O buffer pointer to by the
4380 _base field (or equivalent) of stdio.h's FILE structure. This will
4381 be used to define the macro FILE_bufsiz(fp).
4383 stdio_cnt (d_stdstdio.U):
4384 This variable defines how, given a FILE pointer, fp, to access the
4385 _cnt field (or equivalent) of stdio.h's FILE structure. This will
4386 be used to define the macro FILE_cnt(fp).
4388 stdio_filbuf (d_stdstdio.U):
4389 This variable defines how, given a FILE pointer, fp, to tell
4390 stdio to refill its internal buffers (?). This will
4391 be used to define the macro FILE_filbuf(fp).
4393 stdio_ptr (d_stdstdio.U):
4394 This variable defines how, given a FILE pointer, fp, to access the
4395 _ptr field (or equivalent) of stdio.h's FILE structure. This will
4396 be used to define the macro FILE_ptr(fp).
4398 stdio_stream_array (stdio_streams.U):
4399 This variable tells the name of the array holding the stdio streams.
4400 Usual values include _iob, __iob, and __sF.
4402 strerror_r_proto (d_strerror_r.U):
4403 This variable encodes the prototype of strerror_r.
4404 It is zero if d_strerror_r is undef, and one of the
4405 REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
4408 strings (i_string.U):
4409 This variable holds the full path of the string header that will be
4410 used. Typically /usr/include/string.h or /usr/include/strings.h.
4413 This variable is defined but not used by Configure.
4414 The value is a plain '' and is not useful.
4416 subversion (patchlevel.U):
4417 The subversion level of this package.
4418 The value of subversion comes from the patchlevel.h file.
4419 In a version number such as 5.6.1, this is the "1".
4420 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
4421 This is unique to perl.
4424 This variable holds the place where the manual is located on this
4425 system. It is not the place where the user wants to put his manual
4426 pages. Rather it is the place where Configure may look to find manual
4427 for unix commands (section 1 of the manual usually). See mansrc.
4430 This variable is defined but not used by Configure.
4431 The value is a plain '' and is not useful.
4434 This variable is defined but not used by Configure.
4435 The value is a plain '' and is not useful.
4437 targetarch (Cross.U):
4438 If cross-compiling, this variable contains the target architecture.
4439 If not, this will be empty.
4442 This variable is defined but not used by Configure.
4443 The value is a plain '' and is not useful.
4446 This variable is defined but not used by Configure.
4447 The value is a plain '' and is not useful.
4450 This variable is used internally by Configure to determine the
4451 full pathname (if any) of the test program. After Configure runs,
4452 the value is reset to a plain "test" and is not useful.
4454 timeincl (i_time.U):
4455 This variable holds the full path of the included time header(s).
4457 timetype (d_time.U):
4458 This variable holds the type returned by time(). It can be long,
4459 or time_t on BSD sites (in which case <sys/types.h> should be
4460 included). Anyway, the type Time_t should be used.
4462 tmpnam_r_proto (d_tmpnam_r.U):
4463 This variable encodes the prototype of tmpnam_r.
4464 It is zero if d_tmpnam_r is undef, and one of the
4465 REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
4469 This variable contains the command used by Configure
4470 to copy to from the target host. Useful and available
4471 only during Perl build.
4472 The string ':' if not cross-compiling.
4475 This variable is used internally by Configure to determine the
4476 full pathname (if any) of the touch program. After Configure runs,
4477 the value is reset to a plain "touch" and is not useful.
4480 This variable is used internally by Configure to determine the
4481 full pathname (if any) of the tr program. After Configure runs,
4482 the value is reset to a plain "tr" and is not useful.
4485 This variable contains the value to be passed to the tr(1)
4486 command to transliterate a newline. Typical values are
4487 '\012' and '\n'. This is needed for EBCDIC systems where
4488 newline is not necessarily '\012'.
4491 This variable is defined but not used by Configure.
4492 The value is a plain '' and is not useful.
4494 ttyname_r_proto (d_ttyname_r.U):
4495 This variable encodes the prototype of ttyname_r.
4496 It is zero if d_ttyname_r is undef, and one of the
4497 REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
4501 This variable is the size of an U16 in bytes.
4504 This variable contains the C type used for Perl's U16.
4507 This variable is the size of an U32 in bytes.
4510 This variable contains the C type used for Perl's U32.
4513 This variable is the size of an U64 in bytes.
4516 This variable contains the C type used for Perl's U64.
4519 This variable is the size of an U8 in bytes.
4522 This variable contains the C type used for Perl's U8.
4525 This variable contains the format string used for printing a Uid_t.
4527 uidsign (uidsign.U):
4528 This variable contains the signedness of a uidtype.
4529 1 for unsigned, -1 for signed.
4531 uidsize (uidsize.U):
4532 This variable contains the size of a uidtype in bytes.
4534 uidtype (uidtype.U):
4535 This variable defines Uid_t to be something like uid_t, int,
4536 ushort, or whatever type is used to declare user ids in the kernel.
4539 This variable is used internally by Configure to determine the
4540 full pathname (if any) of the uname program. After Configure runs,
4541 the value is reset to a plain "uname" and is not useful.
4544 This variable is used internally by Configure to determine the
4545 full pathname (if any) of the uniq program. After Configure runs,
4546 the value is reset to a plain "uniq" and is not useful.
4548 uquadtype (quadtype.U):
4549 This variable defines Uquad_t to be something like unsigned long,
4550 unsigned int, unsigned long long, uint64_t, or whatever type is
4551 used for 64-bit integers.
4553 use5005threads (usethreads.U):
4554 This variable conditionally defines the USE_5005THREADS symbol,
4555 and indicates that Perl should be built to use the 5.005-based
4556 threading implementation.
4558 use64bitall (use64bits.U):
4559 This variable conditionally defines the USE_64_BIT_ALL symbol,
4560 and indicates that 64-bit integer types should be used
4561 when available. The maximal possible
4562 64-bitness is employed: LP64 or ILP64, meaning that you will
4563 be able to use more than 2 gigabytes of memory. This mode is
4564 even more binary incompatible than USE_64_BIT_INT. You may not
4565 be able to run the resulting executable in a 32-bit CPU at all or
4566 you may need at least to reboot your OS to 64-bit mode.
4568 use64bitint (use64bits.U):
4569 This variable conditionally defines the USE_64_BIT_INT symbol,
4570 and indicates that 64-bit integer types should be used
4571 when available. The minimal possible 64-bitness
4572 is employed, just enough to get 64-bit integers into Perl.
4573 This may mean using for example "long longs", while your memory
4574 may still be limited to 2 gigabytes.
4576 usecrosscompile (Cross.U):
4577 This variable conditionally defines the USE_CROSS_COMPILE symbol,
4578 and indicates that Perl has been cross-compiled.
4581 This variable indicates if the system supports dynamic
4582 loading of some sort. See also dlsrc and dlobj.
4584 useithreads (usethreads.U):
4585 This variable conditionally defines the USE_ITHREADS symbol,
4586 and indicates that Perl should be built to use the interpreter-based
4587 threading implementation.
4589 uselargefiles (uselfs.U):
4590 This variable conditionally defines the USE_LARGE_FILES symbol,
4591 and indicates that large file interfaces should be used when
4594 uselongdouble (uselongdbl.U):
4595 This variable conditionally defines the USE_LONG_DOUBLE symbol,
4596 and indicates that long doubles should be used when available.
4598 usemorebits (usemorebits.U):
4599 This variable conditionally defines the USE_MORE_BITS symbol,
4600 and indicates that explicit 64-bit interfaces and long doubles
4601 should be used when available.
4603 usemultiplicity (usemultiplicity.U):
4604 This variable conditionally defines the MULTIPLICITY symbol,
4605 and indicates that Perl should be built to use multiplicity.
4607 usemymalloc (mallocsrc.U):
4608 This variable contains y if the malloc that comes with this package
4609 is desired over the system's version of malloc. People often include
4610 special versions of malloc for effiency, but such versions are often
4611 less portable. See also mallocsrc and mallocobj.
4612 If this is 'y', then -lmalloc is removed from $libs.
4615 This variable contains 'true' or 'false' depending whether the
4616 nm extraction is wanted or not.
4618 useopcode (Extensions.U):
4619 This variable holds either 'true' or 'false' to indicate
4620 whether the Opcode extension should be used. The sole
4621 use for this currently is to allow an easy mechanism
4622 for users to skip the Opcode extension from the Configure
4625 useperlio (useperlio.U):
4626 This variable conditionally defines the USE_PERLIO symbol,
4627 and indicates that the PerlIO abstraction should be
4630 useposix (Extensions.U):
4631 This variable holds either 'true' or 'false' to indicate
4632 whether the POSIX extension should be used. The sole
4633 use for this currently is to allow an easy mechanism
4634 for hints files to indicate that POSIX will not compile
4635 on a particular system.
4637 usereentrant (usethreads.U):
4638 This variable conditionally defines the USE_REENTRANT_API symbol,
4639 which indicates that the thread code may try to use the various
4640 _r versions of library functions. This is only potentially
4641 meaningful if usethreads is set and is very experimental, it is
4642 not even prompted for.
4645 This variable is set to true when the user agrees to use sfio.
4646 It is set to false when sfio is not available or when the user
4647 explicitely requests not to use sfio. It is here primarily so
4648 that command-line settings can override the auto-detection of
4649 d_sfio without running into a "WHOA THERE".
4651 useshrplib (libperl.U):
4652 This variable is set to 'true' if the user wishes
4653 to build a shared libperl, and 'false' otherwise.
4655 usesocks (usesocks.U):
4656 This variable conditionally defines the USE_SOCKS symbol,
4657 and indicates that Perl should be built to use SOCKS.
4659 usethreads (usethreads.U):
4660 This variable conditionally defines the USE_THREADS symbol,
4661 and indicates that Perl should be built to use threads.
4663 usevendorprefix (vendorprefix.U):
4664 This variable tells whether the vendorprefix
4665 and consequently other vendor* paths are in use.
4667 usevfork (d_vfork.U):
4668 This variable is set to true when the user accepts to use vfork.
4669 It is set to false when no vfork is available or when the user
4670 explicitely requests not to use vfork.
4673 This variable holds the path of the include files, which is
4674 usually /usr/include. It is mainly used by other Configure units.
4677 This variable is defined but not used by Configure.
4678 The value is a plain '' and is not useful.
4680 uvXUformat (perlxvf.U):
4681 This variable contains the format string used for printing
4682 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
4684 uvoformat (perlxvf.U):
4685 This variable contains the format string used for printing
4686 a Perl UV as an unsigned octal integer.
4689 This variable is the size of a UV in bytes.
4692 This variable contains the C type used for Perl's UV.
4694 uvuformat (perlxvf.U):
4695 This variable contains the format string used for printing
4696 a Perl UV as an unsigned decimal integer.
4698 uvxformat (perlxvf.U):
4699 This variable contains the format string used for printing
4700 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
4702 vendorarch (vendorarch.U):
4703 This variable contains the value of the PERL_VENDORARCH symbol.
4704 It may have a ~ on the front.
4705 The standard distribution will put nothing in this directory.
4706 Vendors who distribute perl may wish to place their own
4707 architecture-dependent modules and extensions in this directory with
4708 MakeMaker Makefile.PL INSTALLDIRS=vendor
4709 or equivalent. See INSTALL for details.
4711 vendorarchexp (vendorarch.U):
4712 This variable is the ~name expanded version of vendorarch, so that you
4713 may use it directly in Makefiles or shell scripts.
4715 vendorbin (vendorbin.U):
4716 This variable contains the eventual value of the VENDORBIN symbol.
4717 It may have a ~ on the front.
4718 The standard distribution will put nothing in this directory.
4719 Vendors who distribute perl may wish to place additional
4720 binaries in this directory with
4721 MakeMaker Makefile.PL INSTALLDIRS=vendor
4722 or equivalent. See INSTALL for details.
4724 vendorbinexp (vendorbin.U):
4725 This variable is the ~name expanded version of vendorbin, so that you
4726 may use it directly in Makefiles or shell scripts.
4728 vendorhtml1 (vendorhtml1.U):
4729 This variable contains the name of the directory for html
4730 pages. It may have a ~ on the front.
4731 The standard distribution will put nothing in this directory.
4732 Vendors who distribute perl may wish to place their own
4733 html pages in this directory with
4734 MakeMaker Makefile.PL INSTALLDIRS=vendor
4735 or equivalent. See INSTALL for details.
4737 vendorhtml1exp (vendorhtml1.U):
4738 This variable is the ~name expanded version of vendorhtml1, so that you
4739 may use it directly in Makefiles or shell scripts.
4741 vendorhtml3 (vendorhtml3.U):
4742 This variable contains the name of the directory for html
4743 library pages. It may have a ~ on the front.
4744 The standard distribution will put nothing in this directory.
4745 Vendors who distribute perl may wish to place their own
4746 html pages for modules and extensions in this directory with
4747 MakeMaker Makefile.PL INSTALLDIRS=vendor
4748 or equivalent. See INSTALL for details.
4750 vendorhtml3exp (vendorhtml3.U):
4751 This variable is the ~name expanded version of vendorhtml3, so that you
4752 may use it directly in Makefiles or shell scripts.
4754 vendorlib (vendorlib.U):
4755 This variable contains the eventual value of the VENDORLIB symbol,
4756 which is the name of the private library for this package.
4757 The standard distribution will put nothing in this directory.
4758 Vendors who distribute perl may wish to place their own
4759 modules in this directory with
4760 MakeMaker Makefile.PL INSTALLDIRS=vendor
4761 or equivalent. See INSTALL for details.
4763 vendorlib_stem (vendorlib.U):
4764 This variable is $vendorlibexp with any trailing version-specific component
4765 removed. The elements in inc_version_list (inc_version_list.U) can
4766 be tacked onto this variable to generate a list of directories to search.
4768 vendorlibexp (vendorlib.U):
4769 This variable is the ~name expanded version of vendorlib, so that you
4770 may use it directly in Makefiles or shell scripts.
4772 vendorman1 (vendorman1.U):
4773 This variable contains the name of the directory for man1
4774 pages. It may have a ~ on the front.
4775 The standard distribution will put nothing in this directory.
4776 Vendors who distribute perl may wish to place their own
4777 man1 pages in this directory with
4778 MakeMaker Makefile.PL INSTALLDIRS=vendor
4779 or equivalent. See INSTALL for details.
4781 vendorman1exp (vendorman1.U):
4782 This variable is the ~name expanded version of vendorman1, so that you
4783 may use it directly in Makefiles or shell scripts.
4785 vendorman3 (vendorman3.U):
4786 This variable contains the name of the directory for man3
4787 pages. It may have a ~ on the front.
4788 The standard distribution will put nothing in this directory.
4789 Vendors who distribute perl may wish to place their own
4790 man3 pages in this directory with
4791 MakeMaker Makefile.PL INSTALLDIRS=vendor
4792 or equivalent. See INSTALL for details.
4794 vendorman3exp (vendorman3.U):
4795 This variable is the ~name expanded version of vendorman3, so that you
4796 may use it directly in Makefiles or shell scripts.
4798 vendorprefix (vendorprefix.U):
4799 This variable holds the full absolute path of the directory below
4800 which the vendor will install add-on packages.
4801 See INSTALL for usage and examples.
4803 vendorprefixexp (vendorprefix.U):
4804 This variable holds the full absolute path of the directory below
4805 which the vendor will install add-on packages. Derived from vendorprefix.
4807 vendorscript (vendorscript.U):
4808 This variable contains the eventual value of the VENDORSCRIPT symbol.
4809 It may have a ~ on the front.
4810 The standard distribution will put nothing in this directory.
4811 Vendors who distribute perl may wish to place additional
4812 executable scripts in this directory with
4813 MakeMaker Makefile.PL INSTALLDIRS=vendor
4814 or equivalent. See INSTALL for details.
4816 vendorscriptexp (vendorscript.U):
4817 This variable is the ~name expanded version of vendorscript, so that you
4818 may use it directly in Makefiles or shell scripts.
4820 version (patchlevel.U):
4821 The full version number of this package, such as 5.6.1 (or 5_6_1).
4822 This combines revision, patchlevel, and subversion to get the
4823 full version number, including any possible subversions.
4824 This is suitable for use as a directory name, and hence is
4825 filesystem dependent.
4827 version_patchlevel_string (patchlevel.U):
4828 This is a string combining version, subversion and
4829 perl_patchlevel (if perl_patchlevel is non-zero).
4830 It is typically something like
4831 'version 7 subversion 1' or
4832 'version 7 subversion 1 patchlevel 11224'
4833 It is computed here to avoid duplication of code in myconfig.SH
4836 versiononly (versiononly.U):
4837 If set, this symbol indicates that only the version-specific
4838 components of a perl installation should be installed.
4839 This may be useful for making a test installation of a new
4840 version without disturbing the existing installation.
4841 Setting versiononly is equivalent to setting installperl's -v option.
4842 In particular, the non-versioned scripts and programs such as
4843 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4844 (see INSTALL for a more complete list). Nor are the man
4846 Usually, this is undef.
4849 This variable is defined but not used by Configure.
4850 The value is a plain '' and is not useful.
4852 voidflags (voidflags.U):
4853 This variable contains the eventual value of the VOIDFLAGS symbol,
4854 which indicates how much support of the void type is given by this
4855 compiler. See VOIDFLAGS for more info.
4858 This variable holds extra path (space-separated) used to find
4859 libraries on this platform, for example CPU-specific libraries
4860 (on multi-CPU platforms) may be listed here.
4862 xs_apiversion (xs_apiversion.U):
4863 This variable contains the version of the oldest perl binary
4864 compatible with the present perl. perl.c:incpush() and
4865 lib/lib.pm will automatically search in $sitearch for older
4866 directories across major versions back to xs_apiversion.
4867 This is only useful if you have a perl library directory tree
4868 structured like the default one.
4869 See INSTALL for how this works.
4870 The versioned site_perl directory was introduced in 5.005,
4871 so that is the lowest possible value.
4872 Since this can depend on compile time options
4873 it is set by Configure. Other non-default sources
4874 of potential incompatibility, such as multiplicity, threads,
4875 debugging, 64bits, sfio, etc., are not checked for currently,
4876 though in principle we could go snooping around in old
4880 This variable holds the name of the compiler compiler we
4881 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4884 This variable contains any additional yacc flags desired by the
4885 user. It is up to the Makefile to use this.
4888 This variable is defined but not used by Configure.
4889 The value is a plain '' and is not useful.
4892 This variable is used internally by Configure to determine the
4893 full pathname (if any) of the zip program. After Configure runs,
4894 the value is reset to a plain "zip" and is not useful.