1 This file contains a description of all the shell variables whose value is
2 determined by the Configure script. Variables intended for use in C
3 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
4 generates pod documentation for Config.pm from this file--please try to keep
5 the formatting regular.]
8 This variable defines the extension used for ordinary libraries.
9 For unix, it is '.a'. The '.' is included. Other possible
10 values include '.lib'.
13 This variable defines the extension used for executable files.
14 For unix it is empty. Other possible values include '.exe'.
17 This variable defines the extension used for object files.
18 For unix, it is '.o'. The '.' is included. Other possible
19 values include '.obj'.
22 This variable is set to 'true' if AFS (Andrew File System) is used
23 on the system, 'false' otherwise. It is possible to override this
24 with a hint value or command line option, but you'd better know
28 This variable is by default set to '/afs'. In the unlikely case
29 this is not the correct root, it is possible to override this with
30 a hint value or command line option. This will be used in subsequent
31 tests for AFSness in the Perl configure and test process.
33 alignbytes (alignbytes.U):
34 This variable holds the number of bytes required to align a
35 double-- or a long double when applicable. Usual values are
36 2, 4 and 8. The default is eight, for safety.
38 ansi2knr (ansi2knr.U):
39 This variable is set if the user needs to run ansi2knr.
40 Currently, this is not supported, so we just abort.
42 aphostname (d_gethname.U):
43 This variable contains the command which can be used to compute the
44 host name. The command is fully qualified by its absolute path, to make
45 it safe when used by a process with super-user privileges.
47 api_revision (patchlevel.U):
48 The three variables, api_revision, api_version, and
49 api_subversion, specify the version of the oldest perl binary
50 compatible with the present perl. In a full version string
51 such as '5.6.1', api_revision is the '5'.
52 Prior to 5.5.640, the format was a floating point number,
54 perl.c:incpush() and lib/lib.pm will automatically search in
55 $sitelib/.. for older directories back to the limit specified
56 by these api_ variables. This is only useful if you have a
57 perl library directory tree structured like the default one.
58 See INSTALL for how this works. The versioned site_perl
59 directory was introduced in 5.005, so that is the lowest
60 possible value. The version list appropriate for the current
61 system is determined in inc_version_list.U.
62 XXX To do: Since compatibility can depend on compile time
63 options (such as bincompat, longlong, etc.) it should
64 (perhaps) be set by Configure, but currently it isn't.
65 Currently, we read a hard-wired value from patchlevel.h.
66 Perhaps what we ought to do is take the hard-wired value from
67 patchlevel.h but then modify it if the current Configure
68 options warrant. patchlevel.h then would use an #ifdef guard.
70 api_subversion (patchlevel.U):
71 The three variables, api_revision, api_version, and
72 api_subversion, specify the version of the oldest perl binary
73 compatible with the present perl. In a full version string
74 such as '5.6.1', api_subversion is the '1'. See api_revision for
77 api_version (patchlevel.U):
78 The three variables, api_revision, api_version, and
79 api_subversion, specify the version of the oldest perl binary
80 compatible with the present perl. In a full version string
81 such as '5.6.1', api_version is the '6'. See api_revision for
82 full details. As a special case, 5.5.0 is rendered in the
83 old-style as 5.005. (In the 5.005_0x maintenance series,
84 this was the only versioned directory in $sitelib.)
86 api_versionstring (patchlevel.U):
87 This variable combines api_revision, api_version, and
88 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
89 for use as a directory name. This is filesystem dependent.
92 This variable is used internally by Configure to determine the
93 full pathname (if any) of the ar program. After Configure runs,
94 the value is reset to a plain "ar" and is not useful.
97 This variable holds the name of the directory in which the user wants
98 to put architecture-dependent public library files for $package.
99 It is most often a local directory such as /usr/local/lib.
100 Programs using this variable must be prepared to deal
101 with filename expansion.
103 archlibexp (archlib.U):
104 This variable is the same as the archlib variable, but is
105 filename expanded at configuration time, for convenient use.
107 archname64 (use64bits.U):
108 This variable is used for the 64-bitness part of $archname.
110 archname (archname.U):
111 This variable is a short name to characterize the current
112 architecture. It is used mainly to construct the default archlib.
115 This variable defines any additional objects that must be linked
116 in with the program on this architecture. On unix, it is usually
117 empty. It is typically used to include emulations of unix calls
118 or other facilities. For perl on OS/2, for example, this would
122 This variable is used internally by Configure to determine the
123 full pathname (if any) of the awk program. After Configure runs,
124 the value is reset to a plain "awk" and is not useful.
127 The base revision level of this package, from the .package file.
130 This variable is defined but not used by Configure.
131 The value is a plain '' and is not useful.
134 This variable holds the name of the directory in which the user wants
135 to put publicly executable images for the package in question. It
136 is most often a local directory such as /usr/local/bin. Programs using
137 this variable must be prepared to deal with ~name substitution.
139 bincompat5005 (bincompat5005.U):
140 This variable contains y if this version of Perl should be
141 binary-compatible with Perl 5.005.
144 This is the same as the bin variable, but is filename expanded at
145 configuration time, for use in your makefiles.
148 This variable is used internally by Configure to determine the
149 full pathname (if any) of the bison program. After Configure runs,
150 the value is reset to a plain "bison" and is not useful.
153 This variable is used internally by Configure to determine the
154 full pathname (if any) of the byacc program. After Configure runs,
155 the value is reset to a plain "byacc" and is not useful.
157 byteorder (byteorder.U):
158 This variable holds the byte order. In the following, larger digits
159 indicate more significance. The variable byteorder is either 4321
160 on a big-endian machine, or 1234 on a little-endian, or 87654321
161 on a Cray ... or 3412 with weird order !
164 This variable contains the \c string if that is what causes the echo
165 command to suppress newline. Otherwise it is null. Correct usage is
166 $echo $n "prompt for a question: $c".
168 castflags (d_castneg.U):
169 This variable contains a flag that precise difficulties the
170 compiler has casting odd floating values to unsigned long:
172 1 = couldn't cast < 0
173 2 = couldn't cast >= 0x80000000
174 4 = couldn't cast in argument expression list
177 This variable is used internally by Configure to determine the
178 full pathname (if any) of the cat program. After Configure runs,
179 the value is reset to a plain "cat" and is not useful.
182 This variable holds the name of a command to execute a C compiler which
183 can resolve multiple global references that happen to have the same
184 name. Usual values are 'cc' and 'gcc'.
185 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
187 cccdlflags (dlsrc.U):
188 This variable contains any special flags that might need to be
189 passed with 'cc -c' to compile modules to be used to create a shared
190 library that will be used for dynamic loading. For hpux, this
191 should be +z. It is up to the makefile to use it.
194 This variable contains any special flags that might need to be
195 passed to cc to link with a shared library for dynamic loading.
196 It is up to the makefile to use it. For sunos 4.1, it should
200 This variable contains any additional C compiler flags desired by
201 the user. It is up to the Makefile to use this.
203 ccflags_uselargefiles (uselfs.U):
204 This variable contains the compiler flags needed by large file builds
205 and added to ccflags by hints files.
208 This can set either by hints files or by Configure. If using
209 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
210 Some platforms, however, make good use of this by storing the
211 flavor of the C compiler being used here. For example if using
212 the Sun WorkShop suite, ccname will be 'workshop'.
214 ccsymbols (Cppsym.U):
215 The variable contains the symbols defined by the C compiler alone.
216 The symbols defined by cpp or by cc when it calls cpp are not in
217 this list, see cppsymbols and cppccsymbols.
218 The list is a space-separated list of symbol=value tokens.
220 ccversion (Checkcc.U):
221 This can set either by hints files or by Configure. If using
222 a (non-gcc) vendor cc, this variable may contain a version for
226 Login name of the person who ran the Configure script and answered the
227 questions. This is used to tag both config.sh and config_h.SH.
229 cf_email (cf_email.U):
230 Electronic mail address of the person who ran Configure. This can be
231 used by units that require the user's e-mail, like MailList.U.
234 Holds the output of the "date" command when the configuration file was
235 produced. This is used to tag both config.sh and config_h.SH.
237 charsize (charsize.U):
238 This variable contains the value of the CHARSIZE symbol, which
239 indicates to the C program how many bytes there are in a character.
242 This variable is defined but not used by Configure.
243 The value is a plain '' and is not useful.
246 This variable is used internally by Configure to determine the
247 full pathname (if any) of the chmod program. After Configure runs,
248 the value is reset to a plain "chmod" and is not useful.
251 This variable is defined but not used by Configure.
252 The value is a plain '' and is not useful.
254 clocktype (d_times.U):
255 This variable holds the type returned by times(). It can be long,
256 or clock_t on BSD sites (in which case <sys/types.h> should be
260 This variable is used internally by Configure to determine the
261 full pathname (if any) of the comm program. After Configure runs,
262 the value is reset to a plain "comm" and is not useful.
265 This variable is defined but not used by Configure.
266 The value is a plain '' and is not useful.
268 contains (contains.U):
269 This variable holds the command to do a grep with a proper return
270 status. On most sane systems it is simply "grep". On insane systems
271 it is a grep followed by a cat followed by a test. This variable
272 is primarily for the use of other Configure units.
275 This variable is used internally by Configure to determine the
276 full pathname (if any) of the cp program. After Configure runs,
277 the value is reset to a plain "cp" and is not useful.
280 This variable is defined but not used by Configure.
281 The value is a plain '' and is not useful.
284 This variable is used internally by Configure to determine the
285 full pathname (if any) of the cpp program. After Configure runs,
286 the value is reset to a plain "cpp" and is not useful.
288 cpp_stuff (cpp_stuff.U):
289 This variable contains an identification of the catenation mechanism
290 used by the C preprocessor.
292 cppccsymbols (Cppsym.U):
293 The variable contains the symbols defined by the C compiler
294 when it calls cpp. The symbols defined by the cc alone or cpp
295 alone are not in this list, see ccsymbols and cppsymbols.
296 The list is a space-separated list of symbol=value tokens.
298 cppflags (ccflags.U):
299 This variable holds the flags that will be passed to the C pre-
300 processor. It is up to the Makefile to use it.
302 cpplast (cppstdin.U):
303 This variable has the same functionality as cppminus, only it applies
304 to cpprun and not cppstdin.
306 cppminus (cppstdin.U):
307 This variable contains the second part of the string which will invoke
308 the C preprocessor on the standard input and produce to standard
309 output. This variable will have the value "-" if cppstdin needs
310 a minus to specify standard input, otherwise the value is "".
313 This variable contains the command which will invoke a C preprocessor
314 on standard input and put the output to stdout. It is guaranteed not
315 to be a wrapper and may be a null string if no preprocessor can be
316 made directly available. This preprocessor might be different from the
317 one used by the C compiler. Don't forget to append cpplast after the
318 preprocessor options.
320 cppstdin (cppstdin.U):
321 This variable contains the command which will invoke the C
322 preprocessor on standard input and put the output to stdout.
323 It is primarily used by other Configure units that ask about
324 preprocessor symbols.
326 cppsymbols (Cppsym.U):
327 The variable contains the symbols defined by the C preprocessor
328 alone. The symbols defined by cc or by cc when it calls cpp are
329 not in this list, see ccsymbols and cppccsymbols.
330 The list is a space-separated list of symbol=value tokens.
332 cryptlib (d_crypt.U):
333 This variable holds -lcrypt or the path to a libcrypt.a archive if
334 the crypt() function is not defined in the standard C library. It is
335 up to the Makefile to use this.
338 This variable is used internally by Configure to determine the
339 full pathname (if any) of the csh program. After Configure runs,
340 the value is reset to a plain "csh" and is not useful.
342 d__fwalk (d__fwalk.U):
343 This variable conditionally defines HAS__FWALK if _fwalk() is
344 available to apply a function to all the file handles.
346 d_access (d_access.U):
347 This variable conditionally defines HAS_ACCESS if the access() system
348 call is available to check for access permissions using real IDs.
350 d_accessx (d_accessx.U):
351 This variable conditionally defines the HAS_ACCESSX symbol, which
352 indicates to the C program that the accessx() routine is available.
355 This variable conditionally defines the HAS_ALARM symbol, which
356 indicates to the C program that the alarm() routine is available.
358 d_archlib (archlib.U):
359 This variable conditionally defines ARCHLIB to hold the pathname
360 of architecture-dependent library files for $package. If
361 $archlib is the same as $privlib, then this is set to undef.
364 This variable conditionally defines the HAS_ATOLF symbol, which
365 indicates to the C program that the atolf() routine is available.
368 This variable conditionally defines the HAS_ATOLL symbol, which
369 indicates to the C program that the atoll() routine is available.
371 d_attribut (d_attribut.U):
372 This variable conditionally defines HASATTRIBUTE, which
373 indicates the C compiler can check for function attributes,
374 such as printf formats.
377 This variable conditionally defines the HAS_BCMP symbol if
378 the bcmp() routine is available to compare strings.
381 This variable conditionally defines the HAS_BCOPY symbol if
382 the bcopy() routine is available to copy strings.
384 d_bincompat5005 (bincompat5005.U):
385 This variable conditionally defines BINCOMPAT5005 so that embed.h
386 can take special action if this version of Perl should be
387 binary-compatible with Perl 5.005. This is impossible for builds
388 that use features like threads and multiplicity it is always $undef
392 This symbol conditionally defines the symbol BSD when running on a
395 d_bsdgetpgrp (d_getpgrp.U):
396 This variable conditionally defines USE_BSD_GETPGRP if
397 getpgrp needs one arguments whereas USG one needs none.
399 d_bsdsetpgrp (d_setpgrp.U):
400 This variable conditionally defines USE_BSD_SETPGRP if
401 setpgrp needs two arguments whereas USG one needs none.
402 See also d_setpgid for a POSIX interface.
405 This variable conditionally defines the HAS_BZERO symbol if
406 the bzero() routine is available to set memory to 0.
408 d_casti32 (d_casti32.U):
409 This variable conditionally defines CASTI32, which indicates
410 whether the C compiler can cast large floats to 32-bit ints.
412 d_castneg (d_castneg.U):
413 This variable conditionally defines CASTNEG, which indicates
414 wether the C compiler can cast negative float to unsigned.
416 d_charvspr (d_vprintf.U):
417 This variable conditionally defines CHARVSPRINTF if this system
418 has vsprintf returning type (char*). The trend seems to be to
419 declare it as "int vsprintf()".
422 This variable conditionally defines the HAS_CHOWN symbol, which
423 indicates to the C program that the chown() routine is available.
425 d_chroot (d_chroot.U):
426 This variable conditionally defines the HAS_CHROOT symbol, which
427 indicates to the C program that the chroot() routine is available.
429 d_chsize (d_chsize.U):
430 This variable conditionally defines the CHSIZE symbol, which
431 indicates to the C program that the chsize() routine is available
432 to truncate files. You might need a -lx to get this routine.
435 This variable conditionally defines the HAS_CLASS symbol, which
436 indicates to the C program that the class() routine is available.
438 d_closedir (d_closedir.U):
439 This variable conditionally defines HAS_CLOSEDIR if closedir() is
442 d_cmsghdr_s (d_cmsghdr_s.U):
443 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
444 which indicates that the struct cmsghdr is supported.
447 This variable conditionally defines the HASCONST symbol, which
448 indicates to the C program that this C compiler knows about the
452 This variable conditionally defines the CRYPT symbol, which
453 indicates to the C program that the crypt() routine is available
454 to encrypt passwords and the like.
457 This variable conditionally defines the CSH symbol, which
458 indicates to the C program that the C-shell exists.
460 d_cuserid (d_cuserid.U):
461 This variable conditionally defines the HAS_CUSERID symbol, which
462 indicates to the C program that the cuserid() routine is available
463 to get character login names.
465 d_dbl_dig (d_dbl_dig.U):
466 This variable conditionally defines d_dbl_dig if this system's
467 header files provide DBL_DIG, which is the number of significant
468 digits in a double precision number.
470 d_dbminitproto (d_dbminitproto.U):
471 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
472 which indicates to the C program that the system provides
473 a prototype for the dbminit() function. Otherwise, it is
474 up to the program to supply one.
476 d_difftime (d_difftime.U):
477 This variable conditionally defines the HAS_DIFFTIME symbol, which
478 indicates to the C program that the difftime() routine is available.
480 d_dirnamlen (i_dirent.U):
481 This variable conditionally defines DIRNAMLEN, which indicates
482 to the C program that the length of directory entry names is
483 provided by a d_namelen field.
485 d_dlerror (d_dlerror.U):
486 This variable conditionally defines the HAS_DLERROR symbol, which
487 indicates to the C program that the dlerror() routine is available.
489 d_dlopen (d_dlopen.U):
490 This variable conditionally defines the HAS_DLOPEN symbol, which
491 indicates to the C program that the dlopen() routine is available.
493 d_dlsymun (d_dlsymun.U):
494 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
495 indicates that we need to prepend an underscore to the symbol
496 name before calling dlsym().
498 d_dosuid (d_dosuid.U):
499 This variable conditionally defines the symbol DOSUID, which
500 tells the C program that it should insert setuid emulation code
501 on hosts which have setuid #! scripts disabled.
503 d_drand48proto (d_drand48proto.U):
504 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
505 which indicates to the C program that the system provides
506 a prototype for the drand48() function. Otherwise, it is
507 up to the program to supply one.
510 This variable conditionally defines HAS_DUP2 if dup2() is
511 available to duplicate file descriptors.
513 d_eaccess (d_eaccess.U):
514 This variable conditionally defines the HAS_EACCESS symbol, which
515 indicates to the C program that the eaccess() routine is available.
517 d_endgrent (d_endgrent.U):
518 This variable conditionally defines the HAS_ENDGRENT symbol, which
519 indicates to the C program that the endgrent() routine is available
520 for sequential access of the group database.
522 d_endhent (d_endhent.U):
523 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
524 available to close whatever was being used for host queries.
526 d_endnent (d_endnent.U):
527 This variable conditionally defines HAS_ENDNETENT if endnetent() is
528 available to close whatever was being used for network queries.
530 d_endpent (d_endpent.U):
531 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
532 available to close whatever was being used for protocol queries.
534 d_endpwent (d_endpwent.U):
535 This variable conditionally defines the HAS_ENDPWENT symbol, which
536 indicates to the C program that the endpwent() routine is available
537 for sequential access of the passwd database.
539 d_endsent (d_endsent.U):
540 This variable conditionally defines HAS_ENDSERVENT if endservent() is
541 available to close whatever was being used for service queries.
543 d_eofnblk (nblock_io.U):
544 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
545 when reading from a non-blocking I/O source.
548 This variable conditionally defines the symbols EUNICE and VAX, which
549 alerts the C program that it must deal with ideosyncracies of VMS.
551 d_fchdir (d_fchdir.U):
552 This variable conditionally defines the HAS_FCHDIR symbol, which
553 indicates to the C program that the fchdir() routine is available.
555 d_fchmod (d_fchmod.U):
556 This variable conditionally defines the HAS_FCHMOD symbol, which
557 indicates to the C program that the fchmod() routine is available
558 to change mode of opened files.
560 d_fchown (d_fchown.U):
561 This variable conditionally defines the HAS_FCHOWN symbol, which
562 indicates to the C program that the fchown() routine is available
563 to change ownership of opened files.
566 This variable conditionally defines the HAS_FCNTL symbol, and indicates
567 whether the fcntl() function exists
569 d_fcntl_can_lock (d_fcntl_can_lock.U):
570 This variable conditionally defines the FCNTL_CAN_LOCK symbol
571 and indicates whether file locking with fcntl() works.
573 d_fd_macros (d_fd_set.U):
574 This variable contains the eventual value of the HAS_FD_MACROS symbol,
575 which indicates if your C compiler knows about the macros which
576 manipulate an fd_set.
578 d_fd_set (d_fd_set.U):
579 This variable contains the eventual value of the HAS_FD_SET symbol,
580 which indicates if your C compiler knows about the fd_set typedef.
582 d_fds_bits (d_fd_set.U):
583 This variable contains the eventual value of the HAS_FDS_BITS symbol,
584 which indicates if your fd_set typedef contains the fds_bits member.
585 If you have an fd_set typedef, but the dweebs who installed it did
586 a half-fast job and neglected to provide the macros to manipulate
587 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
589 d_fgetpos (d_fgetpos.U):
590 This variable conditionally defines HAS_FGETPOS if fgetpos() is
591 available to get the file position indicator.
593 d_finite (d_finite.U):
594 This variable conditionally defines the HAS_FINITE symbol, which
595 indicates to the C program that the finite() routine is available.
597 d_finitel (d_finitel.U):
598 This variable conditionally defines the HAS_FINITEL symbol, which
599 indicates to the C program that the finitel() routine is available.
601 d_flexfnam (d_flexfnam.U):
602 This variable conditionally defines the FLEXFILENAMES symbol, which
603 indicates that the system supports filenames longer than 14 characters.
606 This variable conditionally defines HAS_FLOCK if flock() is
607 available to do file locking.
609 d_flockproto (d_flockproto.U):
610 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
611 which indicates to the C program that the system provides
612 a prototype for the flock() function. Otherwise, it is
613 up to the program to supply one.
616 This variable conditionally defines the HAS_FORK symbol, which
617 indicates to the C program that the fork() routine is available.
619 d_fp_class (d_fp_class.U):
620 This variable conditionally defines the HAS_FP_CLASS symbol, which
621 indicates to the C program that the fp_class() routine is available.
623 d_fpathconf (d_pathconf.U):
624 This variable conditionally defines the HAS_FPATHCONF symbol, which
625 indicates to the C program that the pathconf() routine is available
626 to determine file-system related limits and options associated
627 with a given open file descriptor.
629 d_fpclass (d_fpclass.U):
630 This variable conditionally defines the HAS_FPCLASS symbol, which
631 indicates to the C program that the fpclass() routine is available.
633 d_fpclassify (d_fpclassify.U):
634 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
635 indicates to the C program that the fpclassify() routine is available.
637 d_fpclassl (d_fpclassl.U):
638 This variable conditionally defines the HAS_FPCLASSL symbol, which
639 indicates to the C program that the fpclassl() routine is available.
641 d_fpos64_t (d_fpos64_t.U):
642 This symbol will be defined if the C compiler supports fpos64_t.
644 d_frexpl (d_frexpl.U):
645 This variable conditionally defines the HAS_FREXPL symbol, which
646 indicates to the C program that the frexpl() routine is available.
648 d_fs_data_s (d_fs_data_s.U):
649 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
650 which indicates that the struct fs_data is supported.
652 d_fseeko (d_fseeko.U):
653 This variable conditionally defines the HAS_FSEEKO symbol, which
654 indicates to the C program that the fseeko() routine is available.
656 d_fsetpos (d_fsetpos.U):
657 This variable conditionally defines HAS_FSETPOS if fsetpos() is
658 available to set the file position indicator.
660 d_fstatfs (d_fstatfs.U):
661 This variable conditionally defines the HAS_FSTATFS symbol, which
662 indicates to the C program that the fstatfs() routine is available.
664 d_fstatvfs (d_statvfs.U):
665 This variable conditionally defines the HAS_FSTATVFS symbol, which
666 indicates to the C program that the fstatvfs() routine is available.
669 This variable conditionally defines the HAS_FSYNC symbol, which
670 indicates to the C program that the fsync() routine is available.
672 d_ftello (d_ftello.U):
673 This variable conditionally defines the HAS_FTELLO symbol, which
674 indicates to the C program that the ftello() routine is available.
677 This variable conditionally defines the HAS_FTIME symbol, which indicates
678 that the ftime() routine exists. The ftime() routine is basically
679 a sub-second accuracy clock.
681 d_Gconvert (d_gconvert.U):
682 This variable holds what Gconvert is defined as to convert
683 floating point numbers into strings. It could be 'gconvert'
684 or a more complex macro emulating gconvert with gcvt() or sprintf.
686 d_Gconvert='gconvert((x),(n),(t),(b))'
687 d_Gconvert='gcvt((x),(n),(b))'
688 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
690 d_getcwd (d_getcwd.U):
691 This variable conditionally defines the HAS_GETCWD symbol, which
692 indicates to the C program that the getcwd() routine is available
693 to get the current working directory.
695 d_getespwnam (d_getespwnam.U):
696 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
697 available to retrieve enchanced (shadow) password entries by name.
699 d_getfsstat (d_getfsstat.U):
700 This variable conditionally defines the HAS_GETFSSTAT symbol, which
701 indicates to the C program that the getfsstat() routine is available.
703 d_getgrent (d_getgrent.U):
704 This variable conditionally defines the HAS_GETGRENT symbol, which
705 indicates to the C program that the getgrent() routine is available
706 for sequential access of the group database.
708 d_getgrps (d_getgrps.U):
709 This variable conditionally defines the HAS_GETGROUPS symbol, which
710 indicates to the C program that the getgroups() routine is available
711 to get the list of process groups.
713 d_gethbyaddr (d_gethbyad.U):
714 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
715 indicates to the C program that the gethostbyaddr() routine is available
716 to look up hosts by their IP addresses.
718 d_gethbyname (d_gethbynm.U):
719 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
720 indicates to the C program that the gethostbyname() routine is available
721 to look up host names in some data base or other.
723 d_gethent (d_gethent.U):
724 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
725 available to look up host names in some data base or another.
727 d_gethname (d_gethname.U):
728 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
729 indicates to the C program that the gethostname() routine may be
730 used to derive the host name.
732 d_gethostprotos (d_gethostprotos.U):
733 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
734 which indicates to the C program that <netdb.h> supplies
735 prototypes for the various gethost*() functions.
736 See also netdbtype.U for probing for various netdb types.
738 d_getitimer (d_getitimer.U):
739 This variable conditionally defines the HAS_GETITIMER symbol, which
740 indicates to the C program that the getitimer() routine is available.
742 d_getlogin (d_getlogin.U):
743 This variable conditionally defines the HAS_GETLOGIN symbol, which
744 indicates to the C program that the getlogin() routine is available
745 to get the login name.
747 d_getmnt (d_getmnt.U):
748 This variable conditionally defines the HAS_GETMNT symbol, which
749 indicates to the C program that the getmnt() routine is available
750 to retrieve one or more mount info blocks by filename.
752 d_getmntent (d_getmntent.U):
753 This variable conditionally defines the HAS_GETMNTENT symbol, which
754 indicates to the C program that the getmntent() routine is available
755 to iterate through mounted files to get their mount info.
757 d_getnbyaddr (d_getnbyad.U):
758 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
759 indicates to the C program that the getnetbyaddr() routine is available
760 to look up networks by their IP addresses.
762 d_getnbyname (d_getnbynm.U):
763 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
764 indicates to the C program that the getnetbyname() routine is available
765 to look up networks by their names.
767 d_getnent (d_getnent.U):
768 This variable conditionally defines HAS_GETNETENT if getnetent() is
769 available to look up network names in some data base or another.
771 d_getnetprotos (d_getnetprotos.U):
772 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
773 which indicates to the C program that <netdb.h> supplies
774 prototypes for the various getnet*() functions.
775 See also netdbtype.U for probing for various netdb types.
777 d_getpagsz (d_getpagsz.U):
778 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
779 is available to get the system page size.
781 d_getpbyname (d_getprotby.U):
782 This variable conditionally defines the HAS_GETPROTOBYNAME
783 symbol, which indicates to the C program that the
784 getprotobyname() routine is available to look up protocols
787 d_getpbynumber (d_getprotby.U):
788 This variable conditionally defines the HAS_GETPROTOBYNUMBER
789 symbol, which indicates to the C program that the
790 getprotobynumber() routine is available to look up protocols
793 d_getpent (d_getpent.U):
794 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
795 available to look up protocols in some data base or another.
797 d_getpgid (d_getpgid.U):
798 This variable conditionally defines the HAS_GETPGID symbol, which
799 indicates to the C program that the getpgid(pid) function
800 is available to get the process group id.
802 d_getpgrp2 (d_getpgrp2.U):
803 This variable conditionally defines the HAS_GETPGRP2 symbol, which
804 indicates to the C program that the getpgrp2() (as in DG/UX) routine
805 is available to get the current process group.
807 d_getpgrp (d_getpgrp.U):
808 This variable conditionally defines HAS_GETPGRP if getpgrp() is
809 available to get the current process group.
811 d_getppid (d_getppid.U):
812 This variable conditionally defines the HAS_GETPPID symbol, which
813 indicates to the C program that the getppid() routine is available
814 to get the parent process ID.
816 d_getprior (d_getprior.U):
817 This variable conditionally defines HAS_GETPRIORITY if getpriority()
818 is available to get a process's priority.
820 d_getprotoprotos (d_getprotoprotos.U):
821 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
822 which indicates to the C program that <netdb.h> supplies
823 prototypes for the various getproto*() functions.
824 See also netdbtype.U for probing for various netdb types.
826 d_getprpwnam (d_getprpwnam.U):
827 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
828 available to retrieve protected (shadow) password entries by name.
830 d_getpwent (d_getpwent.U):
831 This variable conditionally defines the HAS_GETPWENT symbol, which
832 indicates to the C program that the getpwent() routine is available
833 for sequential access of the passwd database.
835 d_getsbyname (d_getsrvby.U):
836 This variable conditionally defines the HAS_GETSERVBYNAME
837 symbol, which indicates to the C program that the
838 getservbyname() routine is available to look up services
841 d_getsbyport (d_getsrvby.U):
842 This variable conditionally defines the HAS_GETSERVBYPORT
843 symbol, which indicates to the C program that the
844 getservbyport() routine is available to look up services
847 d_getsent (d_getsent.U):
848 This variable conditionally defines HAS_GETSERVENT if getservent() is
849 available to look up network services in some data base or another.
851 d_getservprotos (d_getservprotos.U):
852 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
853 which indicates to the C program that <netdb.h> supplies
854 prototypes for the various getserv*() functions.
855 See also netdbtype.U for probing for various netdb types.
857 d_getspnam (d_getspnam.U):
858 This variable conditionally defines HAS_GETSPNAM if getspnam() is
859 available to retrieve SysV shadow password entries by name.
861 d_gettimeod (d_ftime.U):
862 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
863 indicates that the gettimeofday() system call exists (to obtain a
864 sub-second accuracy clock). You should probably include <sys/resource.h>.
866 d_gnulibc (d_gnulibc.U):
867 Defined if we're dealing with the GNU C Library.
869 d_grpasswd (i_grp.U):
870 This variable conditionally defines GRPASSWD, which indicates
871 that struct group in <grp.h> contains gr_passwd.
873 d_hasmntopt (d_hasmntopt.U):
874 This variable conditionally defines the HAS_HASMNTOPT symbol, which
875 indicates to the C program that the hasmntopt() routine is available
876 to query the mount options of file systems.
879 This variable conditionally defines HAS_HTONL if htonl() and its
880 friends are available to do network order byte swapping.
883 This variable conditionally defines the HAS_ICONV symbol, which
884 indicates to the C program that the iconv() routine is available.
886 d_index (d_strchr.U):
887 This variable conditionally defines HAS_INDEX if index() and
888 rindex() are available for string searching.
890 d_inetaton (d_inetaton.U):
891 This variable conditionally defines the HAS_INET_ATON symbol, which
892 indicates to the C program that the inet_aton() function is available
893 to parse IP address "dotted-quad" strings.
895 d_int64_t (d_int64_t.U):
896 This symbol will be defined if the C compiler supports int64_t.
898 d_isascii (d_isascii.U):
899 This variable conditionally defines the HAS_ISASCII constant,
900 which indicates to the C program that isascii() is available.
902 d_isfinite (d_isfinite.U):
903 This variable conditionally defines the HAS_ISFINITE symbol, which
904 indicates to the C program that the isfinite() routine is available.
907 This variable conditionally defines the HAS_ISINF symbol, which
908 indicates to the C program that the isinf() routine is available.
911 This variable conditionally defines the HAS_ISNAN symbol, which
912 indicates to the C program that the isnan() routine is available.
914 d_isnanl (d_isnanl.U):
915 This variable conditionally defines the HAS_ISNANL symbol, which
916 indicates to the C program that the isnanl() routine is available.
918 d_killpg (d_killpg.U):
919 This variable conditionally defines the HAS_KILLPG symbol, which
920 indicates to the C program that the killpg() routine is available
921 to kill process groups.
923 d_lchown (d_lchown.U):
924 This variable conditionally defines the HAS_LCHOWN symbol, which
925 indicates to the C program that the lchown() routine is available
926 to operate on a symbolic link (instead of following the link).
928 d_ldbl_dig (d_ldbl_dig.U):
929 This variable conditionally defines d_ldbl_dig if this system's
930 header files provide LDBL_DIG, which is the number of significant
931 digits in a long double precision number.
934 This variable conditionally defines HAS_LINK if link() is
935 available to create hard links.
937 d_locconv (d_locconv.U):
938 This variable conditionally defines HAS_LOCALECONV if localeconv() is
939 available for numeric and monetary formatting conventions.
942 This variable conditionally defines HAS_LOCKF if lockf() is
943 available to do file locking.
945 d_longdbl (d_longdbl.U):
946 This variable conditionally defines HAS_LONG_DOUBLE if
947 the long double type is supported.
949 d_longlong (d_longlong.U):
950 This variable conditionally defines HAS_LONG_LONG if
951 the long long type is supported.
953 d_lseekproto (d_lseekproto.U):
954 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
955 which indicates to the C program that the system provides
956 a prototype for the lseek() function. Otherwise, it is
957 up to the program to supply one.
960 This variable conditionally defines HAS_LSTAT if lstat() is
961 available to do file stats on symbolic links.
963 d_madvise (d_madvise.U):
964 This variable conditionally defines HAS_MADVISE if madvise() is
965 available to map a file into memory.
968 This variable conditionally defines the HAS_MBLEN symbol, which
969 indicates to the C program that the mblen() routine is available
970 to find the number of bytes in a multibye character.
972 d_mbstowcs (d_mbstowcs.U):
973 This variable conditionally defines the HAS_MBSTOWCS symbol, which
974 indicates to the C program that the mbstowcs() routine is available
975 to convert a multibyte string into a wide character string.
977 d_mbtowc (d_mbtowc.U):
978 This variable conditionally defines the HAS_MBTOWC symbol, which
979 indicates to the C program that the mbtowc() routine is available
980 to convert multibyte to a wide character.
982 d_memchr (d_memchr.U):
983 This variable conditionally defines the HAS_MEMCHR symbol, which
984 indicates to the C program that the memchr() routine is available
985 to locate characters within a C string.
987 d_memcmp (d_memcmp.U):
988 This variable conditionally defines the HAS_MEMCMP symbol, which
989 indicates to the C program that the memcmp() routine is available
990 to compare blocks of memory.
992 d_memcpy (d_memcpy.U):
993 This variable conditionally defines the HAS_MEMCPY symbol, which
994 indicates to the C program that the memcpy() routine is available
995 to copy blocks of memory.
997 d_memmove (d_memmove.U):
998 This variable conditionally defines the HAS_MEMMOVE symbol, which
999 indicates to the C program that the memmove() routine is available
1000 to copy potentatially overlapping blocks of memory.
1002 d_memset (d_memset.U):
1003 This variable conditionally defines the HAS_MEMSET symbol, which
1004 indicates to the C program that the memset() routine is available
1005 to set blocks of memory.
1007 d_mkdir (d_mkdir.U):
1008 This variable conditionally defines the HAS_MKDIR symbol, which
1009 indicates to the C program that the mkdir() routine is available
1010 to create directories..
1012 d_mkdtemp (d_mkdtemp.U):
1013 This variable conditionally defines the HAS_MKDTEMP symbol, which
1014 indicates to the C program that the mkdtemp() routine is available
1015 to exclusively create a uniquely named temporary directory.
1017 d_mkfifo (d_mkfifo.U):
1018 This variable conditionally defines the HAS_MKFIFO symbol, which
1019 indicates to the C program that the mkfifo() routine is available.
1021 d_mkstemp (d_mkstemp.U):
1022 This variable conditionally defines the HAS_MKSTEMP symbol, which
1023 indicates to the C program that the mkstemp() routine is available
1024 to exclusively create and open a uniquely named temporary file.
1026 d_mkstemps (d_mkstemps.U):
1027 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1028 indicates to the C program that the mkstemps() routine is available
1029 to exclusively create and open a uniquely named (with a suffix)
1032 d_mktime (d_mktime.U):
1033 This variable conditionally defines the HAS_MKTIME symbol, which
1034 indicates to the C program that the mktime() routine is available.
1037 This variable conditionally defines HAS_MMAP if mmap() is
1038 available to map a file into memory.
1040 d_modfl (d_modfl.U):
1041 This variable conditionally defines the HAS_MODFL symbol, which
1042 indicates to the C program that the modfl() routine is available.
1044 d_modfl_pow32_bug (d_modfl.U):
1045 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1046 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1047 For example from 4294967303.150000 one would get 4294967302.000000
1048 and 1.150000. The bug has been seen in certain versions of glibc,
1049 release 2.2.2 is known to be okay.
1051 d_mprotect (d_mprotect.U):
1052 This variable conditionally defines HAS_MPROTECT if mprotect() is
1053 available to modify the access protection of a memory mapped file.
1056 This variable conditionally defines the HAS_MSG symbol, which
1057 indicates that the entire msg*(2) library is present.
1059 d_msg_ctrunc (d_socket.U):
1060 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1061 which indicates that the MSG_CTRUNC is available. #ifdef is
1062 not enough because it may be an enum, glibc has been known to do this.
1064 d_msg_dontroute (d_socket.U):
1065 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1066 which indicates that the MSG_DONTROUTE is available. #ifdef is
1067 not enough because it may be an enum, glibc has been known to do this.
1069 d_msg_oob (d_socket.U):
1070 This variable conditionally defines the HAS_MSG_OOB symbol,
1071 which indicates that the MSG_OOB is available. #ifdef is
1072 not enough because it may be an enum, glibc has been known to do this.
1074 d_msg_peek (d_socket.U):
1075 This variable conditionally defines the HAS_MSG_PEEK symbol,
1076 which indicates that the MSG_PEEK is available. #ifdef is
1077 not enough because it may be an enum, glibc has been known to do this.
1079 d_msg_proxy (d_socket.U):
1080 This variable conditionally defines the HAS_MSG_PROXY symbol,
1081 which indicates that the MSG_PROXY is available. #ifdef is
1082 not enough because it may be an enum, glibc has been known to do this.
1084 d_msgctl (d_msgctl.U):
1085 This variable conditionally defines the HAS_MSGCTL symbol, which
1086 indicates to the C program that the msgctl() routine is available.
1088 d_msgget (d_msgget.U):
1089 This variable conditionally defines the HAS_MSGGET symbol, which
1090 indicates to the C program that the msgget() routine is available.
1092 d_msghdr_s (d_msghdr_s.U):
1093 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1094 which indicates that the struct msghdr is supported.
1096 d_msgrcv (d_msgrcv.U):
1097 This variable conditionally defines the HAS_MSGRCV symbol, which
1098 indicates to the C program that the msgrcv() routine is available.
1100 d_msgsnd (d_msgsnd.U):
1101 This variable conditionally defines the HAS_MSGSND symbol, which
1102 indicates to the C program that the msgsnd() routine is available.
1104 d_msync (d_msync.U):
1105 This variable conditionally defines HAS_MSYNC if msync() is
1106 available to synchronize a mapped file.
1108 d_munmap (d_munmap.U):
1109 This variable conditionally defines HAS_MUNMAP if munmap() is
1110 available to unmap a region mapped by mmap().
1112 d_mymalloc (mallocsrc.U):
1113 This variable conditionally defines MYMALLOC in case other parts
1114 of the source want to take special action if MYMALLOC is used.
1115 This may include different sorts of profiling or error detection.
1118 This variable conditionally defines the HAS_NICE symbol, which
1119 indicates to the C program that the nice() routine is available.
1121 d_nl_langinfo (d_nl_langinfo.U):
1122 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1123 indicates to the C program that the nl_langinfo() routine is available.
1125 d_nv_preserves_uv (perlxv.U):
1126 This variable indicates whether a variable of type nvtype
1127 can preserve all the bits a variable of type uvtype.
1129 d_nv_preserves_uv_bits (perlxv.U):
1130 This variable indicates how many of bits type uvtype
1131 a variable nvtype can preserve.
1133 d_off64_t (d_off64_t.U):
1134 This symbol will be defined if the C compiler supports off64_t.
1136 d_old_pthread_create_joinable (d_pthrattrj.U):
1137 This variable conditionally defines pthread_create_joinable.
1138 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1140 d_oldpthreads (usethreads.U):
1141 This variable conditionally defines the OLD_PTHREADS_API symbol,
1142 and indicates that Perl should be built to use the old
1143 draft POSIX threads API. This is only potentially meaningful if
1146 d_oldsock (d_socket.U):
1147 This variable conditionally defines the OLDSOCKET symbol, which
1148 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1150 d_open3 (d_open3.U):
1151 This variable conditionally defines the HAS_OPEN3 manifest constant,
1152 which indicates to the C program that the 3 argument version of
1153 the open(2) function is available.
1155 d_pathconf (d_pathconf.U):
1156 This variable conditionally defines the HAS_PATHCONF symbol, which
1157 indicates to the C program that the pathconf() routine is available
1158 to determine file-system related limits and options associated
1159 with a given filename.
1161 d_pause (d_pause.U):
1162 This variable conditionally defines the HAS_PAUSE symbol, which
1163 indicates to the C program that the pause() routine is available
1164 to suspend a process until a signal is received.
1166 d_perl_otherlibdirs (otherlibdirs.U):
1167 This variable conditionally defines PERL_OTHERLIBDIRS, which
1168 contains a colon-separated set of paths for the perl binary to
1169 include in @INC. See also otherlibdirs.
1171 d_phostname (d_gethname.U):
1172 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1173 contains the shell command which, when fed to popen(), may be
1174 used to derive the host name.
1177 This variable conditionally defines the HAS_PIPE symbol, which
1178 indicates to the C program that the pipe() routine is available
1179 to create an inter-process channel.
1182 This variable conditionally defines the HAS_POLL symbol, which
1183 indicates to the C program that the poll() routine is available
1184 to poll active file descriptors.
1186 d_portable (d_portable.U):
1187 This variable conditionally defines the PORTABLE symbol, which
1188 indicates to the C program that it should not assume that it is
1189 running on the machine it was compiled on.
1191 d_PRId64 (quadfio.U):
1192 This variable conditionally defines the PERL_PRId64 symbol, which
1193 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1195 d_PRIeldbl (longdblfio.U):
1196 This variable conditionally defines the PERL_PRIfldbl symbol, which
1197 indiciates that stdio has a symbol to print long doubles.
1199 d_PRIEUldbl (longdblfio.U):
1200 This variable conditionally defines the PERL_PRIfldbl symbol, which
1201 indiciates that stdio has a symbol to print long doubles.
1202 The 'U' in the name is to separate this from d_PRIeldbl so that even
1203 case-blind systems can see the difference.
1205 d_PRIfldbl (longdblfio.U):
1206 This variable conditionally defines the PERL_PRIfldbl symbol, which
1207 indiciates that stdio has a symbol to print long doubles.
1209 d_PRIFUldbl (longdblfio.U):
1210 This variable conditionally defines the PERL_PRIfldbl symbol, which
1211 indiciates that stdio has a symbol to print long doubles.
1212 The 'U' in the name is to separate this from d_PRIfldbl so that even
1213 case-blind systems can see the difference.
1215 d_PRIgldbl (longdblfio.U):
1216 This variable conditionally defines the PERL_PRIfldbl symbol, which
1217 indiciates that stdio has a symbol to print long doubles.
1219 d_PRIGUldbl (longdblfio.U):
1220 This variable conditionally defines the PERL_PRIfldbl symbol, which
1221 indiciates that stdio has a symbol to print long doubles.
1222 The 'U' in the name is to separate this from d_PRIgldbl so that even
1223 case-blind systems can see the difference.
1225 d_PRIi64 (quadfio.U):
1226 This variable conditionally defines the PERL_PRIi64 symbol, which
1227 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1229 d_PRIo64 (quadfio.U):
1230 This variable conditionally defines the PERL_PRIo64 symbol, which
1231 indiciates that stdio has a symbol to print 64-bit octal numbers.
1233 d_PRIu64 (quadfio.U):
1234 This variable conditionally defines the PERL_PRIu64 symbol, which
1235 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1238 d_PRIx64 (quadfio.U):
1239 This variable conditionally defines the PERL_PRIx64 symbol, which
1240 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1242 d_PRIXU64 (quadfio.U):
1243 This variable conditionally defines the PERL_PRIXU64 symbol, which
1244 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1245 The 'U' in the name is to separate this from d_PRIx64 so that even
1246 case-blind systems can see the difference.
1248 d_pthread_atfork (d_pthread_atfork.U):
1249 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1250 which indicates to the C program that the pthread_atfork()
1251 routine is available.
1253 d_pthread_yield (d_pthread_y.U):
1254 This variable conditionally defines the HAS_PTHREAD_YIELD
1255 symbol if the pthread_yield routine is available to yield
1256 the execution of the current thread.
1259 This variable conditionally defines PWAGE, which indicates
1260 that struct passwd contains pw_age.
1262 d_pwchange (i_pwd.U):
1263 This variable conditionally defines PWCHANGE, which indicates
1264 that struct passwd contains pw_change.
1266 d_pwclass (i_pwd.U):
1267 This variable conditionally defines PWCLASS, which indicates
1268 that struct passwd contains pw_class.
1270 d_pwcomment (i_pwd.U):
1271 This variable conditionally defines PWCOMMENT, which indicates
1272 that struct passwd contains pw_comment.
1274 d_pwexpire (i_pwd.U):
1275 This variable conditionally defines PWEXPIRE, which indicates
1276 that struct passwd contains pw_expire.
1278 d_pwgecos (i_pwd.U):
1279 This variable conditionally defines PWGECOS, which indicates
1280 that struct passwd contains pw_gecos.
1282 d_pwpasswd (i_pwd.U):
1283 This variable conditionally defines PWPASSWD, which indicates
1284 that struct passwd contains pw_passwd.
1286 d_pwquota (i_pwd.U):
1287 This variable conditionally defines PWQUOTA, which indicates
1288 that struct passwd contains pw_quota.
1290 d_qgcvt (d_qgcvt.U):
1291 This variable conditionally defines the HAS_QGCVT symbol, which
1292 indicates to the C program that the qgcvt() routine is available.
1294 d_quad (quadtype.U):
1295 This variable, if defined, tells that there's a 64-bit integer type,
1298 d_readdir (d_readdir.U):
1299 This variable conditionally defines HAS_READDIR if readdir() is
1300 available to read directory entries.
1302 d_readlink (d_readlink.U):
1303 This variable conditionally defines the HAS_READLINK symbol, which
1304 indicates to the C program that the readlink() routine is available
1305 to read the value of a symbolic link.
1307 d_readv (d_readv.U):
1308 This variable conditionally defines the HAS_READV symbol, which
1309 indicates to the C program that the readv() routine is available.
1311 d_recvmsg (d_recvmsg.U):
1312 This variable conditionally defines the HAS_RECVMSG symbol, which
1313 indicates to the C program that the recvmsg() routine is available.
1315 d_rename (d_rename.U):
1316 This variable conditionally defines the HAS_RENAME symbol, which
1317 indicates to the C program that the rename() routine is available
1320 d_rewinddir (d_readdir.U):
1321 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1324 d_rmdir (d_rmdir.U):
1325 This variable conditionally defines HAS_RMDIR if rmdir() is
1326 available to remove directories.
1328 d_safebcpy (d_safebcpy.U):
1329 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1330 the bcopy() routine can do overlapping copies. Normally, you
1331 should probably use memmove().
1333 d_safemcpy (d_safemcpy.U):
1334 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1335 the memcpy() routine can do overlapping copies.
1336 For overlapping copies, memmove() should be used, if available.
1338 d_sanemcmp (d_sanemcmp.U):
1339 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1340 the memcpy() routine is available and can be used to compare relative
1341 magnitudes of chars with their high bits set.
1343 d_sbrkproto (d_sbrkproto.U):
1344 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1345 which indicates to the C program that the system provides
1346 a prototype for the sbrk() function. Otherwise, it is
1347 up to the program to supply one.
1349 d_sched_yield (d_pthread_y.U):
1350 This variable conditionally defines the HAS_SCHED_YIELD
1351 symbol if the sched_yield routine is available to yield
1352 the execution of the current thread.
1354 d_scm_rights (d_socket.U):
1355 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1356 which indicates that the SCM_RIGHTS is available. #ifdef is
1357 not enough because it may be an enum, glibc has been known to do this.
1359 d_SCNfldbl (longdblfio.U):
1360 This variable conditionally defines the PERL_PRIfldbl symbol, which
1361 indiciates that stdio has a symbol to scan long doubles.
1363 d_seekdir (d_readdir.U):
1364 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1367 d_select (d_select.U):
1368 This variable conditionally defines HAS_SELECT if select() is
1369 available to select active file descriptors. A <sys/time.h>
1370 inclusion may be necessary for the timeout field.
1373 This variable conditionally defines the HAS_SEM symbol, which
1374 indicates that the entire sem*(2) library is present.
1376 d_semctl (d_semctl.U):
1377 This variable conditionally defines the HAS_SEMCTL symbol, which
1378 indicates to the C program that the semctl() routine is available.
1380 d_semctl_semid_ds (d_union_semun.U):
1381 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1382 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1384 d_semctl_semun (d_union_semun.U):
1385 This variable conditionally defines USE_SEMCTL_SEMUN, which
1386 indicates that union semun is to be used for semctl IPC_STAT.
1388 d_semget (d_semget.U):
1389 This variable conditionally defines the HAS_SEMGET symbol, which
1390 indicates to the C program that the semget() routine is available.
1392 d_semop (d_semop.U):
1393 This variable conditionally defines the HAS_SEMOP symbol, which
1394 indicates to the C program that the semop() routine is available.
1396 d_sendmsg (d_sendmsg.U):
1397 This variable conditionally defines the HAS_SENDMSG symbol, which
1398 indicates to the C program that the sendmsg() routine is available.
1400 d_setegid (d_setegid.U):
1401 This variable conditionally defines the HAS_SETEGID symbol, which
1402 indicates to the C program that the setegid() routine is available
1403 to change the effective gid of the current program.
1405 d_seteuid (d_seteuid.U):
1406 This variable conditionally defines the HAS_SETEUID symbol, which
1407 indicates to the C program that the seteuid() routine is available
1408 to change the effective uid of the current program.
1410 d_setgrent (d_setgrent.U):
1411 This variable conditionally defines the HAS_SETGRENT symbol, which
1412 indicates to the C program that the setgrent() routine is available
1413 for initializing sequential access to the group database.
1415 d_setgrps (d_setgrps.U):
1416 This variable conditionally defines the HAS_SETGROUPS symbol, which
1417 indicates to the C program that the setgroups() routine is available
1418 to set the list of process groups.
1420 d_sethent (d_sethent.U):
1421 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1424 d_setitimer (d_setitimer.U):
1425 This variable conditionally defines the HAS_SETITIMER symbol, which
1426 indicates to the C program that the setitimer() routine is available.
1428 d_setlinebuf (d_setlnbuf.U):
1429 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1430 indicates to the C program that the setlinebuf() routine is available
1431 to change stderr or stdout from block-buffered or unbuffered to a
1434 d_setlocale (d_setlocale.U):
1435 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1436 available to handle locale-specific ctype implementations.
1438 d_setnent (d_setnent.U):
1439 This variable conditionally defines HAS_SETNETENT if setnetent() is
1442 d_setpent (d_setpent.U):
1443 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1446 d_setpgid (d_setpgid.U):
1447 This variable conditionally defines the HAS_SETPGID symbol if the
1448 setpgid(pid, gpid) function is available to set process group ID.
1450 d_setpgrp2 (d_setpgrp2.U):
1451 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1452 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1453 is available to set the current process group.
1455 d_setpgrp (d_setpgrp.U):
1456 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1457 available to set the current process group.
1459 d_setprior (d_setprior.U):
1460 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1461 is available to set a process's priority.
1463 d_setproctitle (d_setproctitle.U):
1464 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1465 which indicates to the C program that the setproctitle() routine
1468 d_setpwent (d_setpwent.U):
1469 This variable conditionally defines the HAS_SETPWENT symbol, which
1470 indicates to the C program that the setpwent() routine is available
1471 for initializing sequential access to the passwd database.
1473 d_setregid (d_setregid.U):
1474 This variable conditionally defines HAS_SETREGID if setregid() is
1475 available to change the real and effective gid of the current
1478 d_setresgid (d_setregid.U):
1479 This variable conditionally defines HAS_SETRESGID if setresgid() is
1480 available to change the real, effective and saved gid of the current
1483 d_setresuid (d_setreuid.U):
1484 This variable conditionally defines HAS_SETREUID if setresuid() is
1485 available to change the real, effective and saved uid of the current
1488 d_setreuid (d_setreuid.U):
1489 This variable conditionally defines HAS_SETREUID if setreuid() is
1490 available to change the real and effective uid of the current
1493 d_setrgid (d_setrgid.U):
1494 This variable conditionally defines the HAS_SETRGID symbol, which
1495 indicates to the C program that the setrgid() routine is available
1496 to change the real gid of the current program.
1498 d_setruid (d_setruid.U):
1499 This variable conditionally defines the HAS_SETRUID symbol, which
1500 indicates to the C program that the setruid() routine is available
1501 to change the real uid of the current program.
1503 d_setsent (d_setsent.U):
1504 This variable conditionally defines HAS_SETSERVENT if setservent() is
1507 d_setsid (d_setsid.U):
1508 This variable conditionally defines HAS_SETSID if setsid() is
1509 available to set the process group ID.
1511 d_setvbuf (d_setvbuf.U):
1512 This variable conditionally defines the HAS_SETVBUF symbol, which
1513 indicates to the C program that the setvbuf() routine is available
1514 to change buffering on an open stdio stream.
1517 This variable conditionally defines the USE_SFIO symbol,
1518 and indicates whether sfio is available (and should be used).
1521 This variable conditionally defines the HAS_SHM symbol, which
1522 indicates that the entire shm*(2) library is present.
1524 d_shmat (d_shmat.U):
1525 This variable conditionally defines the HAS_SHMAT symbol, which
1526 indicates to the C program that the shmat() routine is available.
1528 d_shmatprototype (d_shmat.U):
1529 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1530 symbol, which indicates that sys/shm.h has a prototype for
1533 d_shmctl (d_shmctl.U):
1534 This variable conditionally defines the HAS_SHMCTL symbol, which
1535 indicates to the C program that the shmctl() routine is available.
1537 d_shmdt (d_shmdt.U):
1538 This variable conditionally defines the HAS_SHMDT symbol, which
1539 indicates to the C program that the shmdt() routine is available.
1541 d_shmget (d_shmget.U):
1542 This variable conditionally defines the HAS_SHMGET symbol, which
1543 indicates to the C program that the shmget() routine is available.
1545 d_sigaction (d_sigaction.U):
1546 This variable conditionally defines the HAS_SIGACTION symbol, which
1547 indicates that the Vr4 sigaction() routine is available.
1549 d_sigprocmask (d_sigprocmask.U):
1550 This variable conditionally defines HAS_SIGPROCMASK
1551 if sigprocmask() is available to examine or change the signal mask
1552 of the calling process.
1554 d_sigsetjmp (d_sigsetjmp.U):
1555 This variable conditionally defines the HAS_SIGSETJMP symbol,
1556 which indicates that the sigsetjmp() routine is available to
1557 call setjmp() and optionally save the process's signal mask.
1559 d_sockatmark (d_sockatmark.U):
1560 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1561 indicates to the C program that the sockatmark() routine is available.
1563 d_sockatmarkproto (d_sockatmarkproto.U):
1564 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1565 which indicates to the C program that the system provides
1566 a prototype for the sockatmark() function. Otherwise, it is
1567 up to the program to supply one.
1569 d_socket (d_socket.U):
1570 This variable conditionally defines HAS_SOCKET, which indicates
1571 that the BSD socket interface is supported.
1573 d_socklen_t (d_socklen_t.U):
1574 This symbol will be defined if the C compiler supports socklen_t.
1576 d_sockpair (d_socket.U):
1577 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1578 indicates that the BSD socketpair() is supported.
1580 d_socks5_init (d_socks5_init.U):
1581 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1582 indicates to the C program that the socks5_init() routine is available.
1584 d_sqrtl (d_sqrtl.U):
1585 This variable conditionally defines the HAS_SQRTL symbol, which
1586 indicates to the C program that the sqrtl() routine is available.
1588 d_sresgproto (d_sresgproto.U):
1589 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1590 which indicates to the C program that the system provides
1591 a prototype for the setresgid() function. Otherwise, it is
1592 up to the program to supply one.
1594 d_sresuproto (d_sresuproto.U):
1595 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1596 which indicates to the C program that the system provides
1597 a prototype for the setresuid() function. Otherwise, it is
1598 up to the program to supply one.
1600 d_statblks (d_statblks.U):
1601 This variable conditionally defines USE_STAT_BLOCKS
1602 if this system has a stat structure declaring
1603 st_blksize and st_blocks.
1605 d_statfs_f_flags (d_statfs_f_flags.U):
1606 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1607 symbol, which indicates to struct statfs from has f_flags member.
1608 This kind of struct statfs is coming from sys/mount.h (BSD),
1609 not from sys/statfs.h (SYSV).
1611 d_statfs_s (d_statfs_s.U):
1612 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1613 which indicates that the struct statfs is supported.
1615 d_statvfs (d_statvfs.U):
1616 This variable conditionally defines the HAS_STATVFS symbol, which
1617 indicates to the C program that the statvfs() routine is available.
1619 d_stdio_cnt_lval (d_stdstdio.U):
1620 This variable conditionally defines STDIO_CNT_LVALUE if the
1621 FILE_cnt macro can be used as an lvalue.
1623 d_stdio_ptr_lval (d_stdstdio.U):
1624 This variable conditionally defines STDIO_PTR_LVALUE if the
1625 FILE_ptr macro can be used as an lvalue.
1627 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1628 This symbol is defined if using the FILE_ptr macro as an lvalue
1629 to increase the pointer by n leaves File_cnt(fp) unchanged.
1631 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1632 This symbol is defined if using the FILE_ptr macro as an lvalue
1633 to increase the pointer by n has the side effect of decreasing the
1634 value of File_cnt(fp) by n.
1636 d_stdio_stream_array (stdio_streams.U):
1637 This variable tells whether there is an array holding
1640 d_stdiobase (d_stdstdio.U):
1641 This variable conditionally defines USE_STDIO_BASE if this system
1642 has a FILE structure declaring a usable _base field (or equivalent)
1645 d_stdstdio (d_stdstdio.U):
1646 This variable conditionally defines USE_STDIO_PTR if this system
1647 has a FILE structure declaring usable _ptr and _cnt fields (or
1648 equivalent) in stdio.h.
1650 d_strchr (d_strchr.U):
1651 This variable conditionally defines HAS_STRCHR if strchr() and
1652 strrchr() are available for string searching.
1654 d_strcoll (d_strcoll.U):
1655 This variable conditionally defines HAS_STRCOLL if strcoll() is
1656 available to compare strings using collating information.
1658 d_strctcpy (d_strctcpy.U):
1659 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1660 indicates to the C program that this C compiler knows how to copy
1663 d_strerrm (d_strerror.U):
1664 This variable holds what Strerrr is defined as to translate an error
1665 code condition into an error message string. It could be 'strerror'
1666 or a more complex macro emulating strrror with sys_errlist[], or the
1667 "unknown" string when both strerror and sys_errlist are missing.
1669 d_strerror (d_strerror.U):
1670 This variable conditionally defines HAS_STRERROR if strerror() is
1671 available to translate error numbers to strings.
1673 d_strftime (d_strftime.U):
1674 This variable conditionally defines the HAS_STRFTIME symbol, which
1675 indicates to the C program that the strftime() routine is available.
1677 d_strtod (d_strtod.U):
1678 This variable conditionally defines the HAS_STRTOD symbol, which
1679 indicates to the C program that the strtod() routine is available
1680 to provide better numeric string conversion than atof().
1682 d_strtol (d_strtol.U):
1683 This variable conditionally defines the HAS_STRTOL symbol, which
1684 indicates to the C program that the strtol() routine is available
1685 to provide better numeric string conversion than atoi() and friends.
1687 d_strtold (d_strtold.U):
1688 This variable conditionally defines the HAS_STRTOLD symbol, which
1689 indicates to the C program that the strtold() routine is available.
1691 d_strtoll (d_strtoll.U):
1692 This variable conditionally defines the HAS_STRTOLL symbol, which
1693 indicates to the C program that the strtoll() routine is available.
1695 d_strtoq (d_strtoq.U):
1696 This variable conditionally defines the HAS_STRTOQ symbol, which
1697 indicates to the C program that the strtoq() routine is available.
1699 d_strtoul (d_strtoul.U):
1700 This variable conditionally defines the HAS_STRTOUL symbol, which
1701 indicates to the C program that the strtoul() routine is available
1702 to provide conversion of strings to unsigned long.
1704 d_strtoull (d_strtoull.U):
1705 This variable conditionally defines the HAS_STRTOULL symbol, which
1706 indicates to the C program that the strtoull() routine is available.
1708 d_strtouq (d_strtouq.U):
1709 This variable conditionally defines the HAS_STRTOUQ symbol, which
1710 indicates to the C program that the strtouq() routine is available.
1712 d_strxfrm (d_strxfrm.U):
1713 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1714 available to transform strings.
1716 d_suidsafe (d_dosuid.U):
1717 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1718 if setuid scripts can be secure. This test looks in /dev/fd/.
1720 d_symlink (d_symlink.U):
1721 This variable conditionally defines the HAS_SYMLINK symbol, which
1722 indicates to the C program that the symlink() routine is available
1723 to create symbolic links.
1725 d_syscall (d_syscall.U):
1726 This variable conditionally defines HAS_SYSCALL if syscall() is
1727 available call arbitrary system calls.
1729 d_syscallproto (d_syscallproto.U):
1730 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
1731 which indicates to the C program that the system provides
1732 a prototype for the syscall() function. Otherwise, it is
1733 up to the program to supply one.
1735 d_sysconf (d_sysconf.U):
1736 This variable conditionally defines the HAS_SYSCONF symbol, which
1737 indicates to the C program that the sysconf() routine is available
1738 to determine system related limits and options.
1740 d_sysernlst (d_strerror.U):
1741 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1742 is available to translate error numbers to the symbolic name.
1744 d_syserrlst (d_strerror.U):
1745 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1746 available to translate error numbers to strings.
1748 d_system (d_system.U):
1749 This variable conditionally defines HAS_SYSTEM if system() is
1750 available to issue a shell command.
1752 d_tcgetpgrp (d_tcgtpgrp.U):
1753 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1754 indicates to the C program that the tcgetpgrp() routine is available.
1755 to get foreground process group ID.
1757 d_tcsetpgrp (d_tcstpgrp.U):
1758 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1759 indicates to the C program that the tcsetpgrp() routine is available
1760 to set foreground process group ID.
1762 d_telldir (d_readdir.U):
1763 This variable conditionally defines HAS_TELLDIR if telldir() is
1766 d_telldirproto (d_telldirproto.U):
1767 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1768 which indicates to the C program that the system provides
1769 a prototype for the telldir() function. Otherwise, it is
1770 up to the program to supply one.
1773 This variable conditionally defines the HAS_TIME symbol, which indicates
1774 that the time() routine exists. The time() routine is normaly
1775 provided on UNIX systems.
1777 d_times (d_times.U):
1778 This variable conditionally defines the HAS_TIMES symbol, which indicates
1779 that the times() routine exists. The times() routine is normaly
1780 provided on UNIX systems. You may have to include <sys/times.h>.
1782 d_truncate (d_truncate.U):
1783 This variable conditionally defines HAS_TRUNCATE if truncate() is
1784 available to truncate files.
1786 d_tzname (d_tzname.U):
1787 This variable conditionally defines HAS_TZNAME if tzname[] is
1788 available to access timezone names.
1790 d_u32align (d_u32align.U):
1791 This variable tells whether you must access character data
1792 through U32-aligned pointers.
1794 d_ualarm (d_ualarm.U):
1795 This variable conditionally defines the HAS_UALARM symbol, which
1796 indicates to the C program that the ualarm() routine is available.
1798 d_umask (d_umask.U):
1799 This variable conditionally defines the HAS_UMASK symbol, which
1800 indicates to the C program that the umask() routine is available.
1801 to set and get the value of the file creation mask.
1803 d_uname (d_gethname.U):
1804 This variable conditionally defines the HAS_UNAME symbol, which
1805 indicates to the C program that the uname() routine may be
1806 used to derive the host name.
1808 d_union_semun (d_union_semun.U):
1809 This variable conditionally defines HAS_UNION_SEMUN if the
1810 union semun is defined by including <sys/sem.h>.
1812 d_unordered (d_unordered.U):
1813 This variable conditionally defines the HAS_UNORDERED symbol, which
1814 indicates to the C program that the unordered() routine is available.
1816 d_usleep (d_usleep.U):
1817 This variable conditionally defines HAS_USLEEP if usleep() is
1818 available to do high granularity sleeps.
1820 d_usleepproto (d_usleepproto.U):
1821 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
1822 which indicates to the C program that the system provides
1823 a prototype for the usleep() function. Otherwise, it is
1824 up to the program to supply one.
1826 d_ustat (d_ustat.U):
1827 This variable conditionally defines HAS_USTAT if ustat() is
1828 available to query file system statistics by dev_t.
1830 d_vendorarch (vendorarch.U):
1831 This variable conditionally defined PERL_VENDORARCH.
1833 d_vendorbin (vendorbin.U):
1834 This variable conditionally defines PERL_VENDORBIN.
1836 d_vendorlib (vendorlib.U):
1837 This variable conditionally defines PERL_VENDORLIB.
1839 d_vfork (d_vfork.U):
1840 This variable conditionally defines the HAS_VFORK symbol, which
1841 indicates the vfork() routine is available.
1843 d_void_closedir (d_closedir.U):
1844 This variable conditionally defines VOID_CLOSEDIR if closedir()
1845 does not return a value.
1847 d_voidsig (d_voidsig.U):
1848 This variable conditionally defines VOIDSIG if this system
1849 declares "void (*signal(...))()" in signal.h. The old way was to
1850 declare it as "int (*signal(...))()".
1852 d_voidtty (i_sysioctl.U):
1853 This variable conditionally defines USE_IOCNOTTY to indicate that the
1854 ioctl() call with TIOCNOTTY should be used to void tty association.
1855 Otherwise (on USG probably), it is enough to close the standard file
1856 decriptors and do a setpgrp().
1858 d_volatile (d_volatile.U):
1859 This variable conditionally defines the HASVOLATILE symbol, which
1860 indicates to the C program that this C compiler knows about the
1861 volatile declaration.
1863 d_vprintf (d_vprintf.U):
1864 This variable conditionally defines the HAS_VPRINTF symbol, which
1865 indicates to the C program that the vprintf() routine is available
1866 to printf with a pointer to an argument list.
1868 d_wait4 (d_wait4.U):
1869 This variable conditionally defines the HAS_WAIT4 symbol, which
1870 indicates the wait4() routine is available.
1872 d_waitpid (d_waitpid.U):
1873 This variable conditionally defines HAS_WAITPID if waitpid() is
1874 available to wait for child process.
1876 d_wcstombs (d_wcstombs.U):
1877 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1878 indicates to the C program that the wcstombs() routine is available
1879 to convert wide character strings to multibyte strings.
1881 d_wctomb (d_wctomb.U):
1882 This variable conditionally defines the HAS_WCTOMB symbol, which
1883 indicates to the C program that the wctomb() routine is available
1884 to convert a wide character to a multibyte.
1886 d_writev (d_writev.U):
1887 This variable conditionally defines the HAS_WRITEV symbol, which
1888 indicates to the C program that the writev() routine is available.
1891 This variable conditionally defines the symbol XENIX, which alerts
1892 the C program that it runs under Xenix.
1895 This variable is used internally by Configure to determine the
1896 full pathname (if any) of the date program. After Configure runs,
1897 the value is reset to a plain "date" and is not useful.
1899 db_hashtype (i_db.U):
1900 This variable contains the type of the hash structure element
1901 in the <db.h> header file. In older versions of DB, it was
1902 int, while in newer ones it is u_int32_t.
1904 db_prefixtype (i_db.U):
1905 This variable contains the type of the prefix structure element
1906 in the <db.h> header file. In older versions of DB, it was
1907 int, while in newer ones it is size_t.
1909 db_version_major (i_db.U):
1910 This variable contains the major version number of
1911 Berkeley DB found in the <db.h> header file.
1913 db_version_minor (i_db.U):
1914 This variable contains the minor version number of
1915 Berkeley DB found in the <db.h> header file.
1916 For DB version 1 this is always 0.
1918 db_version_patch (i_db.U):
1919 This variable contains the patch version number of
1920 Berkeley DB found in the <db.h> header file.
1921 For DB version 1 this is always 0.
1923 defvoidused (voidflags.U):
1924 This variable contains the default value of the VOIDUSED symbol (15).
1926 direntrytype (i_dirent.U):
1927 This symbol is set to 'struct direct' or 'struct dirent' depending on
1928 whether dirent is available or not. You should use this pseudo type to
1929 portably declare your directory entries.
1932 This variable contains the extension that is to be used for the
1933 dynamically loaded modules that perl generaties.
1936 This variable contains the name of the dynamic loading file that
1937 will be used with the package.
1939 doublesize (doublesize.U):
1940 This variable contains the value of the DOUBLESIZE symbol, which
1941 indicates to the C program how many bytes there are in a double.
1943 drand01 (randfunc.U):
1944 Indicates the macro to be used to generate normalized
1945 random numbers. Uses randfunc, often divided by
1946 (double) (((unsigned long) 1 << randbits)) in order to
1947 normalize the result.
1948 In C programs, the macro 'Drand01' is mapped to drand01.
1950 dynamic_ext (Extensions.U):
1951 This variable holds a list of XS extension files we want to
1952 link dynamically into the package. It is used by Makefile.
1954 eagain (nblock_io.U):
1955 This variable bears the symbolic errno code set by read() when no
1956 data is present on the file and non-blocking I/O was enabled (otherwise,
1957 read() blocks naturally).
1960 This variable conditionally defines EBCDIC if this
1961 system uses EBCDIC encoding. Among other things, this
1962 means that the character ranges are not contiguous.
1966 This variable is used internally by Configure to determine the
1967 full pathname (if any) of the echo program. After Configure runs,
1968 the value is reset to a plain "echo" and is not useful.
1971 This variable is used internally by Configure to determine the
1972 full pathname (if any) of the egrep program. After Configure runs,
1973 the value is reset to a plain "egrep" and is not useful.
1976 This variable is defined but not used by Configure.
1977 The value is a plain '' and is not useful.
1980 When running under Eunice this variable contains a command which will
1981 convert a shell script to the proper form of text file for it to be
1982 executable by the shell. On other systems it is a no-op.
1985 This is an old synonym for _exe.
1988 This variable is used internally by Configure to determine the
1989 full pathname (if any) of the expr program. After Configure runs,
1990 the value is reset to a plain "expr" and is not useful.
1992 extensions (Extensions.U):
1993 This variable holds a list of all extension files (both XS and
1994 non-xs linked into the package. It is propagated to Config.pm
1995 and is typically used to test whether a particular extesion
1999 This variable holds a list of extra modules to install.
2001 fflushall (fflushall.U):
2002 This symbol, if defined, tells that to flush
2003 all pending stdio output one must loop through all
2004 the stdio file handles stored in an array and fflush them.
2005 Note that if fflushNULL is defined, fflushall will not
2006 even be probed for and will be left undefined.
2008 fflushNULL (fflushall.U):
2009 This symbol, if defined, tells that fflush(NULL) does flush
2010 all pending stdio output.
2013 This variable is defined but not used by Configure.
2014 The value is a plain '' and is not useful.
2016 firstmakefile (Unix.U):
2017 This variable defines the first file searched by make. On unix,
2018 it is makefile (then Makefile). On case-insensitive systems,
2019 it might be something else. This is only used to deal with
2020 convoluted make depend tricks.
2023 This variable is defined but not used by Configure.
2024 The value is a plain '' and is not useful.
2026 fpossize (fpossize.U):
2027 This variable contains the size of a fpostype in bytes.
2029 fpostype (fpostype.U):
2030 This variable defines Fpos_t to be something like fpos_t, long,
2031 uint, or whatever type is used to declare file positions in libc.
2033 freetype (mallocsrc.U):
2034 This variable contains the return type of free(). It is usually
2035 void, but occasionally int.
2038 This variable contains the command used by Configure
2039 to copy files from the target host. Useful and available
2040 only during Perl build.
2041 The string ':' if not cross-compiling.
2044 This variable contains the full pathname to 'ar', whether or
2045 not the user has specified 'portability'. This is only used
2049 This variable contains the full pathname to 'csh', whether or
2050 not the user has specified 'portability'. This is only used
2051 in the compiled C program, and we assume that all systems which
2052 can share this executable will have the same full pathname to
2055 full_sed (Loc_sed.U):
2056 This variable contains the full pathname to 'sed', whether or
2057 not the user has specified 'portability'. This is only used
2058 in the compiled C program, and we assume that all systems which
2059 can share this executable will have the same full pathname to
2062 gccosandvers (gccvers.U):
2063 If GNU cc (gcc) is used, this variable the operating system and
2064 version used to compile the gcc. It is set to '' if not gcc,
2065 or if nothing useful can be parsed as the os version.
2067 gccversion (gccvers.U):
2068 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2069 indicate whether the compiler is version 1 or 2. This is used in
2070 setting some of the default cflags. It is set to '' if not gcc.
2073 This variable contains the format string used for printing a Gid_t.
2075 gidsign (gidsign.U):
2076 This variable contains the signedness of a gidtype.
2077 1 for unsigned, -1 for signed.
2079 gidsize (gidsize.U):
2080 This variable contains the size of a gidtype in bytes.
2082 gidtype (gidtype.U):
2083 This variable defines Gid_t to be something like gid_t, int,
2084 ushort, or whatever type is used to declare the return type
2085 of getgid(). Typically, it is the type of group ids in the kernel.
2088 This variable holds the general path (space-separated) used to
2089 find libraries. It may contain directories that do not exist on
2090 this platform, libpth is the cleaned-up version.
2093 This variable is used internally by Configure to determine the
2094 full pathname (if any) of the grep program. After Configure runs,
2095 the value is reset to a plain "grep" and is not useful.
2098 This variable contains a command that produces the text of the
2099 /etc/group file. This is normally "cat /etc/group", but can be
2100 "ypcat group" when NIS is used.
2101 On some systems, such as os390, there may be no equivalent
2102 command, in which case this variable is unset.
2104 groupstype (groupstype.U):
2105 This variable defines Groups_t to be something like gid_t, int,
2106 ushort, or whatever type is used for the second argument to
2107 getgroups() and setgroups(). Usually, this is the same as
2108 gidtype (gid_t), but sometimes it isn't.
2111 This variable is used internally by Configure to determine the
2112 full pathname (if any) of the gzip program. After Configure runs,
2113 the value is reset to a plain "gzip" and is not useful.
2115 h_fcntl (h_fcntl.U):
2116 This is variable gets set in various places to tell i_fcntl that
2117 <fcntl.h> should be included.
2119 h_sysfile (h_sysfile.U):
2120 This is variable gets set in various places to tell i_sys_file that
2121 <sys/file.h> should be included.
2124 Gives the type of hints used for previous answers. May be one of
2125 "default", "recommended" or "previous".
2128 This variable contains a command that produces the text of the
2129 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2130 "ypcat hosts" when NIS is used.
2131 On some systems, such as os390, there may be no equivalent
2132 command, in which case this variable is unset.
2135 This variable is the size of an I16 in bytes.
2138 This variable contains the C type used for Perl's I16.
2141 This variable is the size of an I32 in bytes.
2144 This variable contains the C type used for Perl's I32.
2147 This variable is the size of an I64 in bytes.
2150 This variable contains the C type used for Perl's I64.
2153 This variable is the size of an I8 in bytes.
2156 This variable contains the C type used for Perl's I8.
2158 i_arpainet (i_arpainet.U):
2159 This variable conditionally defines the I_ARPA_INET symbol,
2160 and indicates whether a C program should include <arpa/inet.h>.
2162 i_bsdioctl (i_sysioctl.U):
2163 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2164 indicates to the C program that <sys/bsdioctl.h> exists and should
2168 This variable conditionally defines the I_DB symbol, and indicates
2169 whether a C program may include Berkeley's DB include file <db.h>.
2172 This variable conditionally defines the I_DBM symbol, which
2173 indicates to the C program that <dbm.h> exists and should
2176 i_dirent (i_dirent.U):
2177 This variable conditionally defines I_DIRENT, which indicates
2178 to the C program that it should include <dirent.h>.
2181 This variable conditionally defines the I_DLD symbol, which
2182 indicates to the C program that <dld.h> (GNU dynamic loading)
2183 exists and should be included.
2185 i_dlfcn (i_dlfcn.U):
2186 This variable conditionally defines the I_DLFCN symbol, which
2187 indicates to the C program that <dlfcn.h> exists and should
2190 i_fcntl (i_fcntl.U):
2191 This variable controls the value of I_FCNTL (which tells
2192 the C program to include <fcntl.h>).
2194 i_float (i_float.U):
2195 This variable conditionally defines the I_FLOAT symbol, and indicates
2196 whether a C program may include <float.h> to get symbols like DBL_MAX
2197 or DBL_MIN, i.e. machine dependent floating point values.
2200 This variable conditionally defines the I_FP symbol, and indicates
2201 whether a C program should include <fp.h>.
2203 i_fp_class (i_fp_class.U):
2204 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2205 whether a C program should include <fp_class.h>.
2208 This variable conditionally defines the I_GDBM symbol, which
2209 indicates to the C program that <gdbm.h> exists and should
2213 This variable conditionally defines the I_GRP symbol, and indicates
2214 whether a C program should include <grp.h>.
2216 i_iconv (i_iconv.U):
2217 This variable conditionally defines the I_ICONV symbol, and indicates
2218 whether a C program should include <iconv.h>.
2220 i_ieeefp (i_ieeefp.U):
2221 This variable conditionally defines the I_IEEEFP symbol, and indicates
2222 whether a C program should include <ieeefp.h>.
2224 i_inttypes (i_inttypes.U):
2225 This variable conditionally defines the I_INTTYPES symbol,
2226 and indicates whether a C program should include <inttypes.h>.
2228 i_langinfo (i_langinfo.U):
2229 This variable conditionally defines the I_LANGINFO symbol,
2230 and indicates whether a C program should include <langinfo.h>.
2232 i_libutil (i_libutil.U):
2233 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2234 whether a C program should include <libutil.h>.
2236 i_limits (i_limits.U):
2237 This variable conditionally defines the I_LIMITS symbol, and indicates
2238 whether a C program may include <limits.h> to get symbols like WORD_BIT
2241 i_locale (i_locale.U):
2242 This variable conditionally defines the I_LOCALE symbol,
2243 and indicates whether a C program should include <locale.h>.
2245 i_machcthr (i_machcthr.U):
2246 This variable conditionally defines the I_MACH_CTHREADS symbol,
2247 and indicates whether a C program should include <mach/cthreads.h>.
2249 i_malloc (i_malloc.U):
2250 This variable conditionally defines the I_MALLOC symbol, and indicates
2251 whether a C program should include <malloc.h>.
2254 This variable conditionally defines the I_MATH symbol, and indicates
2255 whether a C program may include <math.h>.
2257 i_memory (i_memory.U):
2258 This variable conditionally defines the I_MEMORY symbol, and indicates
2259 whether a C program should include <memory.h>.
2261 i_mntent (i_mntent.U):
2262 This variable conditionally defines the I_MNTENT symbol, and indicates
2263 whether a C program should include <mntent.h>.
2266 This variable conditionally defines the I_NDBM symbol, which
2267 indicates to the C program that <ndbm.h> exists and should
2270 i_netdb (i_netdb.U):
2271 This variable conditionally defines the I_NETDB symbol, and indicates
2272 whether a C program should include <netdb.h>.
2274 i_neterrno (i_neterrno.U):
2275 This variable conditionally defines the I_NET_ERRNO symbol, which
2276 indicates to the C program that <net/errno.h> exists and should
2279 i_netinettcp (i_netinettcp.U):
2280 This variable conditionally defines the I_NETINET_TCP symbol,
2281 and indicates whether a C program should include <netinet/tcp.h>.
2284 This variable conditionally defines I_NETINET_IN, which indicates
2285 to the C program that it should include <netinet/in.h>. Otherwise,
2286 you may try <sys/in.h>.
2289 This variable conditionally defines the I_POLL symbol, and indicates
2290 whether a C program should include <poll.h>.
2293 This variable conditionally defines the I_PROT symbol, and indicates
2294 whether a C program should include <prot.h>.
2296 i_pthread (i_pthread.U):
2297 This variable conditionally defines the I_PTHREAD symbol,
2298 and indicates whether a C program should include <pthread.h>.
2301 This variable conditionally defines I_PWD, which indicates
2302 to the C program that it should include <pwd.h>.
2304 i_rpcsvcdbm (i_dbm.U):
2305 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2306 indicates to the C program that <rpcsvc/dbm.h> exists and should
2307 be included. Some System V systems might need this instead of <dbm.h>.
2310 This variable conditionally defines the I_SFIO symbol,
2311 and indicates whether a C program should include <sfio.h>.
2313 i_sgtty (i_termio.U):
2314 This variable conditionally defines the I_SGTTY symbol, which
2315 indicates to the C program that it should include <sgtty.h> rather
2318 i_shadow (i_shadow.U):
2319 This variable conditionally defines the I_SHADOW symbol, and indicates
2320 whether a C program should include <shadow.h>.
2322 i_socks (i_socks.U):
2323 This variable conditionally defines the I_SOCKS symbol, and indicates
2324 whether a C program should include <socks.h>.
2326 i_stdarg (i_varhdr.U):
2327 This variable conditionally defines the I_STDARG symbol, which
2328 indicates to the C program that <stdarg.h> exists and should
2331 i_stddef (i_stddef.U):
2332 This variable conditionally defines the I_STDDEF symbol, which
2333 indicates to the C program that <stddef.h> exists and should
2336 i_stdlib (i_stdlib.U):
2337 This variable conditionally defines the I_STDLIB symbol, which
2338 indicates to the C program that <stdlib.h> exists and should
2341 i_string (i_string.U):
2342 This variable conditionally defines the I_STRING symbol, which
2343 indicates that <string.h> should be included rather than <strings.h>.
2345 i_sunmath (i_sunmath.U):
2346 This variable conditionally defines the I_SUNMATH symbol, and indicates
2347 whether a C program should include <sunmath.h>.
2349 i_sysaccess (i_sysaccess.U):
2350 This variable conditionally defines the I_SYS_ACCESS symbol,
2351 and indicates whether a C program should include <sys/access.h>.
2353 i_sysdir (i_sysdir.U):
2354 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2355 whether a C program should include <sys/dir.h>.
2357 i_sysfile (i_sysfile.U):
2358 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2359 whether a C program should include <sys/file.h> to get R_OK and friends.
2361 i_sysfilio (i_sysioctl.U):
2362 This variable conditionally defines the I_SYS_FILIO symbol, which
2363 indicates to the C program that <sys/filio.h> exists and should
2364 be included in preference to <sys/ioctl.h>.
2367 This variable conditionally defines I_SYS_IN, which indicates
2368 to the C program that it should include <sys/in.h> instead of
2371 i_sysioctl (i_sysioctl.U):
2372 This variable conditionally defines the I_SYS_IOCTL symbol, which
2373 indicates to the C program that <sys/ioctl.h> exists and should
2376 i_syslog (i_syslog.U):
2377 This variable conditionally defines the I_SYSLOG symbol,
2378 and indicates whether a C program should include <syslog.h>.
2380 i_sysmman (i_sysmman.U):
2381 This variable conditionally defines the I_SYS_MMAN symbol, and
2382 indicates whether a C program should include <sys/mman.h>.
2384 i_sysmode (i_sysmode.U):
2385 This variable conditionally defines the I_SYSMODE symbol,
2386 and indicates whether a C program should include <sys/mode.h>.
2388 i_sysmount (i_sysmount.U):
2389 This variable conditionally defines the I_SYSMOUNT symbol,
2390 and indicates whether a C program should include <sys/mount.h>.
2392 i_sysndir (i_sysndir.U):
2393 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2394 whether a C program should include <sys/ndir.h>.
2396 i_sysparam (i_sysparam.U):
2397 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2398 whether a C program should include <sys/param.h>.
2400 i_sysresrc (i_sysresrc.U):
2401 This variable conditionally defines the I_SYS_RESOURCE symbol,
2402 and indicates whether a C program should include <sys/resource.h>.
2404 i_syssecrt (i_syssecrt.U):
2405 This variable conditionally defines the I_SYS_SECURITY symbol,
2406 and indicates whether a C program should include <sys/security.h>.
2408 i_sysselct (i_sysselct.U):
2409 This variable conditionally defines I_SYS_SELECT, which indicates
2410 to the C program that it should include <sys/select.h> in order to
2411 get the definition of struct timeval.
2413 i_syssockio (i_sysioctl.U):
2414 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2415 C program that socket ioctl codes may be found in <sys/sockio.h>
2416 instead of <sys/ioctl.h>.
2418 i_sysstat (i_sysstat.U):
2419 This variable conditionally defines the I_SYS_STAT symbol,
2420 and indicates whether a C program should include <sys/stat.h>.
2422 i_sysstatfs (i_sysstatfs.U):
2423 This variable conditionally defines the I_SYSSTATFS symbol,
2424 and indicates whether a C program should include <sys/statfs.h>.
2426 i_sysstatvfs (i_sysstatvfs.U):
2427 This variable conditionally defines the I_SYSSTATVFS symbol,
2428 and indicates whether a C program should include <sys/statvfs.h>.
2430 i_systime (i_time.U):
2431 This variable conditionally defines I_SYS_TIME, which indicates
2432 to the C program that it should include <sys/time.h>.
2434 i_systimek (i_time.U):
2435 This variable conditionally defines I_SYS_TIME_KERNEL, which
2436 indicates to the C program that it should include <sys/time.h>
2437 with KERNEL defined.
2439 i_systimes (i_systimes.U):
2440 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2441 whether a C program should include <sys/times.h>.
2443 i_systypes (i_systypes.U):
2444 This variable conditionally defines the I_SYS_TYPES symbol,
2445 and indicates whether a C program should include <sys/types.h>.
2447 i_sysuio (i_sysuio.U):
2448 This variable conditionally defines the I_SYSUIO symbol, and indicates
2449 whether a C program should include <sys/uio.h>.
2451 i_sysun (i_sysun.U):
2452 This variable conditionally defines I_SYS_UN, which indicates
2453 to the C program that it should include <sys/un.h> to get UNIX
2454 domain socket definitions.
2456 i_sysutsname (i_sysutsname.U):
2457 This variable conditionally defines the I_SYSUTSNAME symbol,
2458 and indicates whether a C program should include <sys/utsname.h>.
2460 i_sysvfs (i_sysvfs.U):
2461 This variable conditionally defines the I_SYSVFS symbol,
2462 and indicates whether a C program should include <sys/vfs.h>.
2464 i_syswait (i_syswait.U):
2465 This variable conditionally defines I_SYS_WAIT, which indicates
2466 to the C program that it should include <sys/wait.h>.
2468 i_termio (i_termio.U):
2469 This variable conditionally defines the I_TERMIO symbol, which
2470 indicates to the C program that it should include <termio.h> rather
2473 i_termios (i_termio.U):
2474 This variable conditionally defines the I_TERMIOS symbol, which
2475 indicates to the C program that the POSIX <termios.h> file is
2479 This variable conditionally defines I_TIME, which indicates
2480 to the C program that it should include <time.h>.
2482 i_unistd (i_unistd.U):
2483 This variable conditionally defines the I_UNISTD symbol, and indicates
2484 whether a C program should include <unistd.h>.
2486 i_ustat (i_ustat.U):
2487 This variable conditionally defines the I_USTAT symbol, and indicates
2488 whether a C program should include <ustat.h>.
2490 i_utime (i_utime.U):
2491 This variable conditionally defines the I_UTIME symbol, and indicates
2492 whether a C program should include <utime.h>.
2494 i_values (i_values.U):
2495 This variable conditionally defines the I_VALUES symbol, and indicates
2496 whether a C program may include <values.h> to get symbols like MAXLONG
2499 i_varargs (i_varhdr.U):
2500 This variable conditionally defines I_VARARGS, which indicates
2501 to the C program that it should include <varargs.h>.
2503 i_varhdr (i_varhdr.U):
2504 Contains the name of the header to be included to get va_dcl definition.
2505 Typically one of varargs.h or stdarg.h.
2507 i_vfork (i_vfork.U):
2508 This variable conditionally defines the I_VFORK symbol, and indicates
2509 whether a C program should include vfork.h.
2511 ignore_versioned_solibs (libs.U):
2512 This variable should be non-empty if non-versioned shared
2513 libraries (libfoo.so.x.y) are to be ignored (because they
2514 cannot be linked against).
2516 inc_version_list (inc_version_list.U):
2517 This variable specifies the list of subdirectories in over
2518 which perl.c:incpush() and lib/lib.pm will automatically
2519 search when adding directories to @INC. The elements in
2520 the list are separated by spaces. This is only useful
2521 if you have a perl library directory tree structured like the
2522 default one. See INSTALL for how this works. The versioned
2523 site_perl directory was introduced in 5.005, so that is the
2524 lowest possible value.
2526 inc_version_list_init (inc_version_list.U):
2527 This variable holds the same list as inc_version_list, but
2528 each item is enclosed in double quotes and separated by commas,
2529 suitable for use in the PERL_INC_VERSION_LIST initialization.
2532 This variable must preceed the normal include path to get hte
2533 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2534 Value can be "" or "/bsd43" on mips.
2537 This variable is defined but not used by Configure.
2538 The value is a plain '' and is not useful.
2540 installarchlib (archlib.U):
2541 This variable is really the same as archlibexp but may differ on
2542 those systems using AFS. For extra portability, only this variable
2543 should be used in makefiles.
2546 This variable is the same as binexp unless AFS is running in which case
2547 the user is explicitely prompted for it. This variable should always
2548 be used in your makefiles for maximum portability.
2550 installman1dir (man1dir.U):
2551 This variable is really the same as man1direxp, unless you are using
2552 AFS in which case it points to the read/write location whereas
2553 man1direxp only points to the read-only access location. For extra
2554 portability, you should only use this variable within your makefiles.
2556 installman3dir (man3dir.U):
2557 This variable is really the same as man3direxp, unless you are using
2558 AFS in which case it points to the read/write location whereas
2559 man3direxp only points to the read-only access location. For extra
2560 portability, you should only use this variable within your makefiles.
2562 installprefix (installprefix.U):
2563 This variable holds the name of the directory below which
2564 "make install" will install the package. For most users, this
2565 is the same as prefix. However, it is useful for
2566 installing the software into a different (usually temporary)
2567 location after which it can be bundled up and moved somehow
2568 to the final location specified by prefix.
2570 installprefixexp (installprefix.U):
2571 This variable holds the full absolute path of installprefix
2572 with all ~-expansion done.
2574 installprivlib (privlib.U):
2575 This variable is really the same as privlibexp but may differ on
2576 those systems using AFS. For extra portability, only this variable
2577 should be used in makefiles.
2579 installscript (scriptdir.U):
2580 This variable is usually the same as scriptdirexp, unless you are on
2581 a system running AFS, in which case they may differ slightly. You
2582 should always use this variable within your makefiles for portability.
2584 installsitearch (sitearch.U):
2585 This variable is really the same as sitearchexp but may differ on
2586 those systems using AFS. For extra portability, only this variable
2587 should be used in makefiles.
2589 installsitebin (sitebin.U):
2590 This variable is usually the same as sitebinexp, unless you are on
2591 a system running AFS, in which case they may differ slightly. You
2592 should always use this variable within your makefiles for portability.
2594 installsitelib (sitelib.U):
2595 This variable is really the same as sitelibexp but may differ on
2596 those systems using AFS. For extra portability, only this variable
2597 should be used in makefiles.
2599 installstyle (installstyle.U):
2600 This variable describes the "style" of the perl installation.
2601 This is intended to be useful for tools that need to
2602 manipulate entire perl distributions. Perl itself doesn't use
2603 this to find its libraries -- the library directories are
2604 stored directly in Config.pm. Currently, there are only two
2605 styles: "lib" and "lib/perl5". The default library locations
2606 (e.g. privlib, sitelib) are either $prefix/lib or
2607 $prefix/lib/perl5. The former is useful if $prefix is a
2608 directory dedicated to perl (e.g. /opt/perl), while the latter
2609 is useful if $prefix is shared by many packages, e.g. if
2611 This may later be extended to include other information, so
2612 be careful with pattern-matching on the results.
2613 For compatibility with perl5.005 and earlier, the default
2614 setting is based on whether or not $prefix contains the string
2617 installusrbinperl (instubperl.U):
2618 This variable tells whether Perl should be installed also as
2619 /usr/bin/perl in addition to
2622 installvendorarch (vendorarch.U):
2623 This variable is really the same as vendorarchexp but may differ on
2624 those systems using AFS. For extra portability, only this variable
2625 should be used in makefiles.
2627 installvendorbin (vendorbin.U):
2628 This variable is really the same as vendorbinexp but may differ on
2629 those systems using AFS. For extra portability, only this variable
2630 should be used in makefiles.
2632 installvendorlib (vendorlib.U):
2633 This variable is really the same as vendorlibexp but may differ on
2634 those systems using AFS. For extra portability, only this variable
2635 should be used in makefiles.
2637 intsize (intsize.U):
2638 This variable contains the value of the INTSIZE symbol, which
2639 indicates to the C program how many bytes there are in an int.
2641 issymlink (issymlink.U):
2642 This variable holds the test command to test for a symbolic link
2643 (if they are supported). Typical values include 'test -h' and
2646 ivdformat (perlxvf.U):
2647 This variable contains the format string used for printing
2648 a Perl IV as a signed decimal integer.
2651 This variable is the size of an IV in bytes.
2654 This variable contains the C type used for Perl's IV.
2656 known_extensions (Extensions.U):
2657 This variable holds a list of all XS extensions included in
2661 This variable is defined but not used by Configure.
2662 The value is a plain '' and is not useful.
2665 This variable indicates the program to be used to link
2666 libraries for dynamic loading. On some systems, it is 'ld'.
2667 On ELF systems, it should be $cc. Mostly, we'll try to respect
2668 the hint file setting.
2670 lddlflags (dlsrc.U):
2671 This variable contains any special flags that might need to be
2672 passed to $ld to create a shared library suitable for dynamic
2673 loading. It is up to the makefile to use it. For hpux, it
2674 should be '-b'. For sunos 4.1, it is empty.
2676 ldflags (ccflags.U):
2677 This variable contains any additional C loader flags desired by
2678 the user. It is up to the Makefile to use this.
2680 ldflags_uselargefiles (uselfs.U):
2681 This variable contains the loader flags needed by large file builds
2682 and added to ldflags by hints files.
2684 ldlibpthname (libperl.U):
2685 This variable holds the name of the shared library
2686 search path, often LD_LIBRARY_PATH. To get an empty
2687 string, the hints file must set this to 'none'.
2690 This variable is used internally by Configure to determine the
2691 full pathname (if any) of the less program. After Configure runs,
2692 the value is reset to a plain "less" and is not useful.
2695 This is an old synonym for _a.
2698 This variable contains the location of the C library.
2700 libperl (libperl.U):
2701 The perl executable is obtained by linking perlmain.c with
2702 libperl, any static extensions (usually just DynaLoader),
2703 and any other libraries needed on this system. libperl
2704 is usually libperl.a, but can also be libperl.so.xxx if
2705 the user wishes to build a perl executable with a shared
2709 This variable holds the general path (space-separated) used to find
2710 libraries. It is intended to be used by other units.
2713 This variable holds the additional libraries we want to use.
2714 It is up to the Makefile to deal with it.
2717 This variable holds the directory names aka dirnames of the libraries
2718 we found and accepted, duplicates are removed.
2721 This variable holds the filenames aka basenames of the libraries
2722 we found and accepted.
2725 This variable holds the full pathnames of the libraries
2726 we found and accepted.
2729 This variable holds the directory names probed for libraries.
2731 libswanted (Myinit.U):
2732 This variable holds a list of all the libraries we want to
2733 search. The order is chosen to pick up the c library
2734 ahead of ucb or bsd libraries for SVR4.
2736 libswanted_uselargefiles (uselfs.U):
2737 This variable contains the libraries needed by large file builds
2738 and added to ldflags by hints files. It is a space separated list
2739 of the library names without the "lib" prefix or any suffix, just
2743 This variable is defined but not used by Configure.
2744 The value is a plain '' and is not useful.
2747 This variable is defined but not used by Configure.
2748 The value is a plain '' and is not useful.
2750 lkflags (ccflags.U):
2751 This variable contains any additional C partial linker flags desired by
2752 the user. It is up to the Makefile to use this.
2755 This variable is used internally by Configure to determine the
2756 full pathname (if any) of the ln program. After Configure runs,
2757 the value is reset to a plain "ln" and is not useful.
2760 This variable holds the name of the command to make
2761 symbolic links (if they are supported). It can be used
2762 in the Makefile. It is either 'ln -s' or 'ln'
2764 locincpth (ccflags.U):
2765 This variable contains a list of additional directories to be
2766 searched by the compiler. The appropriate '-I' directives will
2767 be added to ccflags. This is intended to simplify setting
2768 local directories from the Configure command line.
2769 It's not much, but it parallels the loclibpth stuff in libpth.U.
2771 loclibpth (libpth.U):
2772 This variable holds the paths (space-separated) used to find local
2773 libraries. It is prepended to libpth, and is intended to be easily
2774 set from the command line.
2776 longdblsize (d_longdbl.U):
2777 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2778 indicates to the C program how many bytes there are in a long double,
2779 if this system supports long doubles.
2781 longlongsize (d_longlong.U):
2782 This variable contains the value of the LONGLONGSIZE symbol, which
2783 indicates to the C program how many bytes there are in a long long,
2784 if this system supports long long.
2786 longsize (intsize.U):
2787 This variable contains the value of the LONGSIZE symbol, which
2788 indicates to the C program how many bytes there are in a long.
2791 This variable is defined but not used by Configure.
2792 The value is a plain '' and is not useful.
2795 This variable is defined but not used by Configure.
2796 The value is a plain '' and is not useful.
2799 This variable is used internally by Configure to determine the
2800 full pathname (if any) of the ls program. After Configure runs,
2801 the value is reset to a plain "ls" and is not useful.
2803 lseeksize (lseektype.U):
2804 This variable defines lseektype to be something like off_t, long,
2805 or whatever type is used to declare lseek offset's type in the
2806 kernel (which also appears to be lseek's return type).
2808 lseektype (lseektype.U):
2809 This variable defines lseektype to be something like off_t, long,
2810 or whatever type is used to declare lseek offset's type in the
2811 kernel (which also appears to be lseek's return type).
2814 This variable is defined but not used by Configure.
2815 The value is a plain '' and is not useful.
2818 This variable is defined but not used by Configure.
2819 The value is a plain '' and is not useful.
2822 This variable is used internally by Configure to determine the
2823 full pathname (if any) of the make program. After Configure runs,
2824 the value is reset to a plain "make" and is not useful.
2826 make_set_make (make.U):
2827 Some versions of 'make' set the variable MAKE. Others do not.
2828 This variable contains the string to be included in Makefile.SH
2829 so that MAKE is set if needed, and not if not needed.
2830 Possible values are:
2831 make_set_make='#' # If your make program handles this for you,
2832 make_set_make="MAKE=$make" # if it doesn't.
2833 I used a comment character so that we can distinguish a
2834 'set' value (from a previous config.sh or Configure '-D' option)
2835 from an uncomputed value.
2837 mallocobj (mallocsrc.U):
2838 This variable contains the name of the malloc.o that this package
2839 generates, if that malloc.o is preferred over the system malloc.
2840 Otherwise the value is null. This variable is intended for generating
2841 Makefiles. See mallocsrc.
2843 mallocsrc (mallocsrc.U):
2844 This variable contains the name of the malloc.c that comes with
2845 the package, if that malloc.c is preferred over the system malloc.
2846 Otherwise the value is null. This variable is intended for generating
2849 malloctype (mallocsrc.U):
2850 This variable contains the kind of ptr returned by malloc and realloc.
2852 man1dir (man1dir.U):
2853 This variable contains the name of the directory in which manual
2854 source pages are to be put. It is the responsibility of the
2855 Makefile.SH to get the value of this into the proper command.
2856 You must be prepared to do the ~name expansion yourself.
2858 man1direxp (man1dir.U):
2859 This variable is the same as the man1dir variable, but is filename
2860 expanded at configuration time, for convenient use in makefiles.
2862 man1ext (man1dir.U):
2863 This variable contains the extension that the manual page should
2864 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2867 man3dir (man3dir.U):
2868 This variable contains the name of the directory in which manual
2869 source pages are to be put. It is the responsibility of the
2870 Makefile.SH to get the value of this into the proper command.
2871 You must be prepared to do the ~name expansion yourself.
2873 man3direxp (man3dir.U):
2874 This variable is the same as the man3dir variable, but is filename
2875 expanded at configuration time, for convenient use in makefiles.
2877 man3ext (man3dir.U):
2878 This variable contains the extension that the manual page should
2879 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2883 This variable is used internally by Configure to determine the
2884 full pathname (if any) of the Mcc program. After Configure runs,
2885 the value is reset to a plain "Mcc" and is not useful.
2887 mips_type (usrinc.U):
2888 This variable holds the environment type for the mips system.
2889 Possible values are "BSD 4.3" and "System V".
2892 This variable is used internally by Configure to determine the
2893 full pathname (if any) of the mkdir program. After Configure runs,
2894 the value is reset to a plain "mkdir" and is not useful.
2896 mmaptype (d_mmap.U):
2897 This symbol contains the type of pointer returned by mmap()
2898 (and simultaneously the type of the first argument).
2899 It can be 'void *' or 'caddr_t'.
2901 modetype (modetype.U):
2902 This variable defines modetype to be something like mode_t,
2903 int, unsigned short, or whatever type is used to declare file
2904 modes for system calls.
2907 This variable is used internally by Configure to determine the
2908 full pathname (if any) of the more program. After Configure runs,
2909 the value is reset to a plain "more" and is not useful.
2911 multiarch (multiarch.U):
2912 This variable conditionally defines the MULTIARCH symbol
2913 which signifies the presence of multiplatform files.
2914 This is normally set by hints files.
2917 This variable is defined but not used by Configure.
2918 The value is a plain '' and is not useful.
2920 myarchname (archname.U):
2921 This variable holds the architecture name computed by Configure in
2922 a previous run. It is not intended to be perused by any user and
2923 should never be set in a hint file.
2925 mydomain (myhostname.U):
2926 This variable contains the eventual value of the MYDOMAIN symbol,
2927 which is the domain of the host the program is going to run on.
2928 The domain must be appended to myhostname to form a complete host name.
2929 The dot comes with mydomain, and need not be supplied by the program.
2931 myhostname (myhostname.U):
2932 This variable contains the eventual value of the MYHOSTNAME symbol,
2933 which is the name of the host the program is going to run on.
2934 The domain is not kept with hostname, but must be gotten from mydomain.
2935 The dot comes with mydomain, and need not be supplied by the program.
2937 myuname (Oldconfig.U):
2938 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2939 pseudo variables assignments in the output are stripped, thank you. The
2940 whole thing is then lower-cased.
2943 This variable contains the '-n' flag if that is what causes the echo
2944 command to suppress newline. Otherwise it is null. Correct usage is
2945 $echo $n "prompt for a question: $c".
2947 need_va_copy (need_va_copy.U):
2948 This symbol, if defined, indicates that the system stores
2949 the variable argument list datatype, va_list, in a format
2950 that cannot be copied by simple assignment, so that some
2951 other means must be used when copying is required.
2952 As such systems vary in their provision (or non-provision)
2953 of copying mechanisms, handy.h defines a platform-
2954 independent macro, Perl_va_copy(src, dst), to do the job.
2956 netdb_hlen_type (netdbtype.U):
2957 This variable holds the type used for the 2nd argument to
2958 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2959 This is only useful if you have gethostbyaddr(), naturally.
2961 netdb_host_type (netdbtype.U):
2962 This variable holds the type used for the 1st argument to
2963 gethostbyaddr(). Usually, this is char * or void *, possibly
2964 with or without a const prefix.
2965 This is only useful if you have gethostbyaddr(), naturally.
2967 netdb_name_type (netdbtype.U):
2968 This variable holds the type used for the argument to
2969 gethostbyname(). Usually, this is char * or const char *.
2970 This is only useful if you have gethostbyname(), naturally.
2972 netdb_net_type (netdbtype.U):
2973 This variable holds the type used for the 1st argument to
2974 getnetbyaddr(). Usually, this is int or long.
2975 This is only useful if you have getnetbyaddr(), naturally.
2978 This variable is used internally by Configure to determine the
2979 full pathname (if any) of the nm program. After Configure runs,
2980 the value is reset to a plain "nm" and is not useful.
2983 This variable holds the options that may be necessary for nm.
2985 nm_so_opt (usenm.U):
2986 This variable holds the options that may be necessary for nm
2987 to work on a shared library but that can not be used on an
2988 archive library. Currently, this is only used by Linux, where
2989 nm --dynamic is *required* to get symbols from an ELF library which
2990 has been stripped, but nm --dynamic is *fatal* on an archive library.
2991 Maybe Linux should just always set usenm=false.
2993 nonxs_ext (Extensions.U):
2994 This variable holds a list of all non-xs extensions included
2995 in the package. All of them will be built.
2998 This variable is used internally by Configure to determine the
2999 full pathname (if any) of the nroff program. After Configure runs,
3000 the value is reset to a plain "nroff" and is not useful.
3002 nveformat (perlxvf.U):
3003 This variable contains the format string used for printing
3004 a Perl NV using %e-ish floating point format.
3006 nvEUformat (perlxvf.U):
3007 This variable contains the format string used for printing
3008 a Perl NV using %E-ish floating point format.
3010 nvfformat (perlxvf.U):
3011 This variable confains the format string used for printing
3012 a Perl NV using %f-ish floating point format.
3014 nvFUformat (perlxvf.U):
3015 This variable confains the format string used for printing
3016 a Perl NV using %F-ish floating point format.
3018 nvgformat (perlxvf.U):
3019 This variable contains the format string used for printing
3020 a Perl NV using %g-ish floating point format.
3022 nvGUformat (perlxvf.U):
3023 This variable contains the format string used for printing
3024 a Perl NV using %G-ish floating point format.
3027 This variable is the size of an NV in bytes.
3030 This variable contains the C type used for Perl's NV.
3032 o_nonblock (nblock_io.U):
3033 This variable bears the symbol value to be used during open() or fcntl()
3034 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3035 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3036 but that is only supported by some devices.
3039 This is an old synonym for _o.
3041 old_pthread_create_joinable (d_pthrattrj.U):
3042 This variable defines the constant to use for creating joinable
3043 (aka undetached) pthreads. Unused if pthread.h defines
3044 PTHREAD_CREATE_JOINABLE. If used, possible values are
3045 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3047 optimize (ccflags.U):
3048 This variable contains any optimizer/debugger flag that should be used.
3049 It is up to the Makefile to use it.
3051 orderlib (orderlib.U):
3052 This variable is "true" if the components of libraries must be ordered
3053 (with `lorder $* | tsort`) before placing them in an archive. Set to
3054 "false" if ranlib or ar can generate random libraries.
3056 osname (Oldconfig.U):
3057 This variable contains the operating system name (e.g. sunos,
3058 solaris, hpux, etc.). It can be useful later on for setting
3059 defaults. Any spaces are replaced with underscores. It is set
3060 to a null string if we can't figure it out.
3062 osvers (Oldconfig.U):
3063 This variable contains the operating system version (e.g.
3064 4.1.3, 5.2, etc.). It is primarily used for helping select
3065 an appropriate hints file, but might be useful elsewhere for
3066 setting defaults. It is set to '' if we can't figure it out.
3067 We try to be flexible about how much of the version number
3068 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3069 same for this package, hints files might just be os_4.0 or
3070 os_4.1, etc., not keeping separate files for each little release.
3072 otherlibdirs (otherlibdirs.U):
3073 This variable contains a colon-separated set of paths for the perl
3074 binary to search for additional library files or modules.
3075 These directories will be tacked to the end of @INC.
3076 Perl will automatically search below each path for version-
3077 and architecture-specific directories. See inc_version_list
3079 A value of ' ' means 'none' and is used to preserve this value
3080 for the next run through Configure.
3082 package (package.U):
3083 This variable contains the name of the package being constructed.
3084 It is primarily intended for the use of later Configure units.
3087 This variable contains the name of the preferred pager on the system.
3088 Usual values are (the full pathnames of) more, less, pg, or cat.
3091 This variable contains a command that produces the text of the
3092 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3093 "ypcat passwd" when NIS is used.
3094 On some systems, such as os390, there may be no equivalent
3095 command, in which case this variable is unset.
3097 patchlevel (patchlevel.U):
3098 The patchlevel level of this package.
3099 The value of patchlevel comes from the patchlevel.h file.
3100 In a version number such as 5.6.1, this is the "6".
3101 In patchlevel.h, this is referred to as "PERL_VERSION".
3104 This is an old synonym for p_ in Head.U, the character
3105 used to separate elements in the command shell search PATH.
3108 This variable contains the full path (if any) to a previously
3109 installed perl5.005 or later suitable for running the script
3110 to determine inc_version_list.
3113 This variable is defined but not used by Configure.
3114 The value is a plain '' and is not useful.
3116 perl_patchlevel (patchlevel.U):
3117 This is the Perl patch level, a numeric change identifier,
3118 as defined by whichever source code maintenance system
3119 is used to maintain the patches; currently Perforce.
3120 It does not correlate with the Perl version numbers or
3121 the maintenance versus development dichotomy except
3122 by also being increasing.
3124 PERL_REVISION (Oldsyms.U):
3125 In a Perl version number such as 5.6.2, this is the 5.
3126 This value is manually set in patchlevel.h
3128 PERL_SUBVERSION (Oldsyms.U):
3129 In a Perl version number such as 5.6.2, this is the 2.
3130 Values greater than 50 represent potentially unstable
3131 development subversions.
3132 This value is manually set in patchlevel.h
3134 PERL_VERSION (Oldsyms.U):
3135 In a Perl version number such as 5.6.2, this is the 6.
3136 This value is manually set in patchlevel.h
3138 perladmin (perladmin.U):
3139 Electronic mail address of the perl5 administrator.
3142 The list of libraries needed by Perl only (any libraries needed
3143 by extensions only will by dropped, if using dynamic loading).
3145 perlpath (perlpath.U):
3146 This variable contains the eventual value of the PERLPATH symbol,
3147 which contains the name of the perl interpreter to be used in
3148 shell scripts and in the "eval 'exec'" idiom.
3151 This variable is used internally by Configure to determine the
3152 full pathname (if any) of the pg program. After Configure runs,
3153 the value is reset to a plain "pg" and is not useful.
3155 phostname (myhostname.U):
3156 This variable contains the eventual value of the PHOSTNAME symbol,
3157 which is a command that can be fed to popen() to get the host name.
3158 The program should probably not presume that the domain is or isn't
3161 pidtype (pidtype.U):
3162 This variable defines PIDTYPE to be something like pid_t, int,
3163 ushort, or whatever type is used to declare process ids in the kernel.
3166 Holds the private path used by Configure to find out the libraries.
3167 Its value is prepend to libpth. This variable takes care of special
3168 machines, like the mips. Usually, it should be empty.
3170 pm_apiversion (xs_apiversion.U):
3171 This variable contains the version of the oldest perl
3172 compatible with the present perl. (That is, pure perl modules
3173 written for $pm_apiversion will still work for the current
3174 version). perl.c:incpush() and lib/lib.pm will automatically
3175 search in $sitelib for older directories across major versions
3176 back to pm_apiversion. This is only useful if you have a perl
3177 library directory tree structured like the default one. The
3178 versioned site_perl library was introduced in 5.005, so that's
3179 the default setting for this variable. It's hard to imagine
3180 it changing before Perl6. It is included here for symmetry
3181 with xs_apiveprsion -- the searching algorithms will
3182 (presumably) be similar.
3183 See the INSTALL file for how this works.
3186 This variable is defined but not used by Configure.
3187 The value is a plain '' and is not useful.
3190 This variable is defined but not used by Configure.
3191 The value is a plain '' and is not useful.
3194 This variable holds the name of the directory below which the
3195 user will install the package. Usually, this is /usr/local, and
3196 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3197 man pages in /usr/local/man, etc. It is only used to set defaults
3198 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3200 prefixexp (prefix.U):
3201 This variable holds the full absolute path of the directory below
3202 which the user will install the package. Derived from prefix.
3204 privlib (privlib.U):
3205 This variable contains the eventual value of the PRIVLIB symbol,
3206 which is the name of the private library for this package. It may
3207 have a ~ on the front. It is up to the makefile to eventually create
3208 this directory while performing installation (with ~ substitution).
3210 privlibexp (privlib.U):
3211 This variable is the ~name expanded version of privlib, so that you
3212 may use it directly in Makefiles or shell scripts.
3214 prototype (prototype.U):
3215 This variable holds the eventual value of CAN_PROTOTYPE, which
3216 indicates the C compiler can handle funciton prototypes.
3218 ptrsize (ptrsize.U):
3219 This variable contains the value of the PTRSIZE symbol, which
3220 indicates to the C program how many bytes there are in a pointer.
3222 quadkind (quadtype.U):
3223 This variable, if defined, encodes the type of a quad:
3224 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3226 quadtype (quadtype.U):
3227 This variable defines Quad_t to be something like long, int,
3228 long long, int64_t, or whatever type is used for 64-bit integers.
3230 randbits (randfunc.U):
3231 Indicates how many bits are produced by the function used to
3232 generate normalized random numbers.
3234 randfunc (randfunc.U):
3235 Indicates the name of the random number function to use.
3236 Values include drand48, random, and rand. In C programs,
3237 the 'Drand01' macro is defined to generate uniformly distributed
3238 random numbers over the range [0., 1.[ (see drand01 and nrand).
3240 randseedtype (randfunc.U):
3241 Indicates the type of the argument of the seedfunc.
3243 ranlib (orderlib.U):
3244 This variable is set to the pathname of the ranlib program, if it is
3245 needed to generate random libraries. Set to ":" if ar can generate
3246 random libraries or if random libraries are not supported
3248 rd_nodata (nblock_io.U):
3249 This variable holds the return code from read() when no data is
3250 present. It should be -1, but some systems return 0 when O_NDELAY is
3251 used, which is a shame because you cannot make the difference between
3252 no data and an EOF.. Sigh!
3254 revision (patchlevel.U):
3255 The value of revision comes from the patchlevel.h file.
3256 In a version number such as 5.6.1, this is the "5".
3257 In patchlevel.h, this is referred to as "PERL_REVISION".
3260 This variable is used internally by Configure to determine the
3261 full pathname (if any) of the rm program. After Configure runs,
3262 the value is reset to a plain "rm" and is not useful.
3265 This variable is defined but not used by Configure.
3266 The value is a plain '' and is not useful.
3269 This variable contains the command used by Configure
3270 to copy and execute a cross-compiled executable in the
3271 target host. Useful and available only during Perl build.
3272 Empty string '' if not cross-compiling.
3275 This variable contains 'true' or 'false' depending whether the
3276 nm extraction should be performed or not, according to the value
3277 of usenm and the flags on the Configure command line.
3279 sched_yield (d_pthread_y.U):
3280 This variable defines the way to yield the execution
3281 of the current thread.
3283 scriptdir (scriptdir.U):
3284 This variable holds the name of the directory in which the user wants
3285 to put publicly scripts for the package in question. It is either
3286 the same directory as for binaries, or a special one that can be
3287 mounted across different architectures, like /usr/share. Programs
3288 must be prepared to deal with ~name expansion.
3290 scriptdirexp (scriptdir.U):
3291 This variable is the same as scriptdir, but is filename expanded
3292 at configuration time, for programs not wanting to bother with it.
3295 This variable is used internally by Configure to determine the
3296 full pathname (if any) of the sed program. After Configure runs,
3297 the value is reset to a plain "sed" and is not useful.
3299 seedfunc (randfunc.U):
3300 Indicates the random number generating seed function.
3301 Values include srand48, srandom, and srand.
3303 selectminbits (selectminbits.U):
3304 This variable holds the minimum number of bits operated by select.
3305 That is, if you do select(n, ...), how many bits at least will be
3306 cleared in the masks if some activity is detected. Usually this
3307 is either n or 32*ceil(n/32), especially many little-endians do
3308 the latter. This is only useful if you have select(), naturally.
3310 selecttype (selecttype.U):
3311 This variable holds the type used for the 2nd, 3rd, and 4th
3312 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3313 is defined, and 'int *' otherwise. This is only useful if you
3314 have select(), naturally.
3317 This variable is defined but not used by Configure.
3318 The value is a plain '' and is not useful.
3321 This variable contains the full pathname of the shell used
3322 on this system to execute Bourne shell scripts. Usually, this will be
3323 /bin/sh, though it's possible that some systems will have /bin/ksh,
3324 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3326 This unit comes before Options.U, so you can't set sh with a '-D'
3327 option, though you can override this (and startsh)
3328 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3331 This variable is defined but not used by Configure.
3332 The value is a plain '' and is not useful.
3334 sharpbang (spitshell.U):
3335 This variable contains the string #! if this system supports that
3338 shmattype (d_shmat.U):
3339 This symbol contains the type of pointer returned by shmat().
3340 It can be 'void *' or 'char *'.
3342 shortsize (intsize.U):
3343 This variable contains the value of the SHORTSIZE symbol which
3344 indicates to the C program how many bytes there are in a short.
3346 shrpenv (libperl.U):
3347 If the user builds a shared libperl.so, then we need to tell the
3348 'perl' executable where it will be able to find the installed libperl.so.
3349 One way to do this on some systems is to set the environment variable
3350 LD_RUN_PATH to the directory that will be the final location of the
3351 shared libperl.so. The makefile can use this with something like
3352 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3354 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3357 See the main perl Makefile.SH for actual working usage.
3358 Alternatively, we might be able to use a command line option such
3359 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3360 $archlibexp/CORE (Linux).
3362 shsharp (spitshell.U):
3363 This variable tells further Configure units whether your sh can
3366 sig_count (sig_name.U):
3367 This variable holds a number larger than the largest valid
3368 signal number. This is usually the same as the NSIG macro.
3370 sig_name (sig_name.U):
3371 This variable holds the signal names, space separated. The leading
3372 SIG in signal name is removed. A ZERO is prepended to the
3373 list. This is currently not used.
3375 sig_name_init (sig_name.U):
3376 This variable holds the signal names, enclosed in double quotes and
3377 separated by commas, suitable for use in the SIG_NAME definition
3378 below. A "ZERO" is prepended to the list, and the list is
3379 terminated with a plain 0. The leading SIG in signal names
3380 is removed. See sig_num.
3382 sig_num (sig_name.U):
3383 This variable holds the signal numbers, space separated. A ZERO is
3384 prepended to the list (corresponding to the fake SIGZERO), and
3385 the list is terminated with a 0. Those numbers correspond to
3386 the value of the signal listed in the same place within the
3389 sig_num_init (sig_name.U):
3390 This variable holds the signal numbers, enclosed in double quotes and
3391 separated by commas, suitable for use in the SIG_NUM definition
3392 below. A "ZERO" is prepended to the list, and the list is
3393 terminated with a plain 0.
3395 sig_size (sig_name.U):
3396 This variable contains the number of elements of the sig_name
3397 and sig_num arrays, excluding the final NULL entry.
3399 signal_t (d_voidsig.U):
3400 This variable holds the type of the signal handler (void or int).
3402 sitearch (sitearch.U):
3403 This variable contains the eventual value of the SITEARCH symbol,
3404 which is the name of the private library for this package. It may
3405 have a ~ on the front. It is up to the makefile to eventually create
3406 this directory while performing installation (with ~ substitution).
3407 The standard distribution will put nothing in this directory.
3408 After perl has been installed, users may install their own local
3409 architecture-dependent modules in this directory with
3410 MakeMaker Makefile.PL
3411 or equivalent. See INSTALL for details.
3413 sitearchexp (sitearch.U):
3414 This variable is the ~name expanded version of sitearch, so that you
3415 may use it directly in Makefiles or shell scripts.
3417 sitebin (sitebin.U):
3418 This variable holds the name of the directory in which the user wants
3419 to put add-on publicly executable files for the package in question. It
3420 is most often a local directory such as /usr/local/bin. Programs using
3421 this variable must be prepared to deal with ~name substitution.
3422 The standard distribution will put nothing in this directory.
3423 After perl has been installed, users may install their own local
3424 executables in this directory with
3425 MakeMaker Makefile.PL
3426 or equivalent. See INSTALL for details.
3428 sitebinexp (sitebin.U):
3429 This is the same as the sitebin variable, but is filename expanded at
3430 configuration time, for use in your makefiles.
3432 sitelib (sitelib.U):
3433 This variable contains the eventual value of the SITELIB symbol,
3434 which is the name of the private library for this package. It may
3435 have a ~ on the front. It is up to the makefile to eventually create
3436 this directory while performing installation (with ~ substitution).
3437 The standard distribution will put nothing in this directory.
3438 After perl has been installed, users may install their own local
3439 architecture-independent modules in this directory with
3440 MakeMaker Makefile.PL
3441 or equivalent. See INSTALL for details.
3443 sitelib_stem (sitelib.U):
3444 This variable is $sitelibexp with any trailing version-specific component
3445 removed. The elements in inc_version_list (inc_version_list.U) can
3446 be tacked onto this variable to generate a list of directories to search.
3448 sitelibexp (sitelib.U):
3449 This variable is the ~name expanded version of sitelib, so that you
3450 may use it directly in Makefiles or shell scripts.
3452 siteprefix (siteprefix.U):
3453 This variable holds the full absolute path of the directory below
3454 which the user will install add-on packages.
3455 See INSTALL for usage and examples.
3457 siteprefixexp (siteprefix.U):
3458 This variable holds the full absolute path of the directory below
3459 which the user will install add-on packages. Derived from siteprefix.
3461 sizesize (sizesize.U):
3462 This variable contains the size of a sizetype in bytes.
3464 sizetype (sizetype.U):
3465 This variable defines sizetype to be something like size_t,
3466 unsigned long, or whatever type is used to declare length
3467 parameters for string functions.
3470 This variable is defined but not used by Configure.
3471 The value is a plain '' and is not useful.
3474 This variable is defined but not used by Configure.
3475 The value is a plain '' and is not useful.
3478 This variable holds the extension used to identify shared libraries
3479 (also known as shared objects) on the system. Usually set to 'so'.
3481 sockethdr (d_socket.U):
3482 This variable has any cpp '-I' flags needed for socket support.
3484 socketlib (d_socket.U):
3485 This variable has the names of any libraries needed for socket support.
3487 socksizetype (socksizetype.U):
3488 This variable holds the type used for the size argument
3489 for various socket calls like accept. Usual values include
3490 socklen_t, size_t, and int.
3493 This variable is used internally by Configure to determine the
3494 full pathname (if any) of the sort program. After Configure runs,
3495 the value is reset to a plain "sort" and is not useful.
3497 spackage (package.U):
3498 This variable contains the name of the package being constructed,
3499 with the first letter uppercased, i.e. suitable for starting
3502 spitshell (spitshell.U):
3503 This variable contains the command necessary to spit out a runnable
3504 shell on this system. It is either cat or a grep '-v' for # comments.
3506 sPRId64 (quadfio.U):
3507 This variable, if defined, contains the string used by stdio to
3508 format 64-bit decimal numbers (format 'd') for output.
3510 sPRIeldbl (longdblfio.U):
3511 This variable, if defined, contains the string used by stdio to
3512 format long doubles (format 'e') for output.
3514 sPRIEUldbl (longdblfio.U):
3515 This variable, if defined, contains the string used by stdio to
3516 format long doubles (format 'E') for output.
3517 The 'U' in the name is to separate this from sPRIeldbl so that even
3518 case-blind systems can see the difference.
3520 sPRIfldbl (longdblfio.U):
3521 This variable, if defined, contains the string used by stdio to
3522 format long doubles (format 'f') for output.
3524 sPRIFUldbl (longdblfio.U):
3525 This variable, if defined, contains the string used by stdio to
3526 format long doubles (format 'F') for output.
3527 The 'U' in the name is to separate this from sPRIfldbl so that even
3528 case-blind systems can see the difference.
3530 sPRIgldbl (longdblfio.U):
3531 This variable, if defined, contains the string used by stdio to
3532 format long doubles (format 'g') for output.
3534 sPRIGUldbl (longdblfio.U):
3535 This variable, if defined, contains the string used by stdio to
3536 format long doubles (format 'G') for output.
3537 The 'U' in the name is to separate this from sPRIgldbl so that even
3538 case-blind systems can see the difference.
3540 sPRIi64 (quadfio.U):
3541 This variable, if defined, contains the string used by stdio to
3542 format 64-bit decimal numbers (format 'i') for output.
3544 sPRIo64 (quadfio.U):
3545 This variable, if defined, contains the string used by stdio to
3546 format 64-bit octal numbers (format 'o') for output.
3548 sPRIu64 (quadfio.U):
3549 This variable, if defined, contains the string used by stdio to
3550 format 64-bit unsigned decimal numbers (format 'u') for output.
3552 sPRIx64 (quadfio.U):
3553 This variable, if defined, contains the string used by stdio to
3554 format 64-bit hexadecimal numbers (format 'x') for output.
3556 sPRIXU64 (quadfio.U):
3557 This variable, if defined, contains the string used by stdio to
3558 format 64-bit hExADECimAl numbers (format 'X') for output.
3559 The 'U' in the name is to separate this from sPRIx64 so that even
3560 case-blind systems can see the difference.
3563 This variable holds the path to the package source. It is up to
3564 the Makefile to use this variable and set VPATH accordingly to
3565 find the sources remotely.
3567 sSCNfldbl (longdblfio.U):
3568 This variable, if defined, contains the string used by stdio to
3569 format long doubles (format 'f') for input.
3571 ssizetype (ssizetype.U):
3572 This variable defines ssizetype to be something like ssize_t,
3573 long or int. It is used by functions that return a count
3574 of bytes or an error condition. It must be a signed type.
3575 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3577 startperl (startperl.U):
3578 This variable contains the string to put on the front of a perl
3579 script to make sure (hopefully) that it runs with perl and not some
3580 shell. Of course, that leading line must be followed by the classical
3582 eval 'exec perl -S $0 ${1+"$@"}'
3583 if $running_under_some_shell;
3584 to guarantee perl startup should the shell execute the script. Note
3585 that this magic incatation is not understood by csh.
3587 startsh (startsh.U):
3588 This variable contains the string to put on the front of a shell
3589 script to make sure (hopefully) that it runs with sh and not some
3592 static_ext (Extensions.U):
3593 This variable holds a list of XS extension files we want to
3594 link statically into the package. It is used by Makefile.
3596 stdchar (stdchar.U):
3597 This variable conditionally defines STDCHAR to be the type of char
3598 used in stdio.h. It has the values "unsigned char" or "char".
3600 stdio_base (d_stdstdio.U):
3601 This variable defines how, given a FILE pointer, fp, to access the
3602 _base field (or equivalent) of stdio.h's FILE structure. This will
3603 be used to define the macro FILE_base(fp).
3605 stdio_bufsiz (d_stdstdio.U):
3606 This variable defines how, given a FILE pointer, fp, to determine
3607 the number of bytes store in the I/O buffer pointer to by the
3608 _base field (or equivalent) of stdio.h's FILE structure. This will
3609 be used to define the macro FILE_bufsiz(fp).
3611 stdio_cnt (d_stdstdio.U):
3612 This variable defines how, given a FILE pointer, fp, to access the
3613 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3614 be used to define the macro FILE_cnt(fp).
3616 stdio_filbuf (d_stdstdio.U):
3617 This variable defines how, given a FILE pointer, fp, to tell
3618 stdio to refill its internal buffers (?). This will
3619 be used to define the macro FILE_filbuf(fp).
3621 stdio_ptr (d_stdstdio.U):
3622 This variable defines how, given a FILE pointer, fp, to access the
3623 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3624 be used to define the macro FILE_ptr(fp).
3626 stdio_stream_array (stdio_streams.U):
3627 This variable tells the name of the array holding the stdio streams.
3628 Usual values include _iob, __iob, and __sF.
3630 strings (i_string.U):
3631 This variable holds the full path of the string header that will be
3632 used. Typically /usr/include/string.h or /usr/include/strings.h.
3635 This variable is defined but not used by Configure.
3636 The value is a plain '' and is not useful.
3638 subversion (patchlevel.U):
3639 The subversion level of this package.
3640 The value of subversion comes from the patchlevel.h file.
3641 In a version number such as 5.6.1, this is the "1".
3642 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3643 This is unique to perl.
3646 This variable holds the place where the manual is located on this
3647 system. It is not the place where the user wants to put his manual
3648 pages. Rather it is the place where Configure may look to find manual
3649 for unix commands (section 1 of the manual usually). See mansrc.
3652 This variable is defined but not used by Configure.
3653 The value is a plain '' and is not useful.
3656 This variable is defined but not used by Configure.
3657 The value is a plain '' and is not useful.
3659 targetarch (Cross.U):
3660 If cross-compiling, this variable contains the target architecture.
3661 If not, this will be empty.
3664 This variable is defined but not used by Configure.
3665 The value is a plain '' and is not useful.
3668 This variable is defined but not used by Configure.
3669 The value is a plain '' and is not useful.
3672 This variable is used internally by Configure to determine the
3673 full pathname (if any) of the test program. After Configure runs,
3674 the value is reset to a plain "test" and is not useful.
3676 timeincl (i_time.U):
3677 This variable holds the full path of the included time header(s).
3679 timetype (d_time.U):
3680 This variable holds the type returned by time(). It can be long,
3681 or time_t on BSD sites (in which case <sys/types.h> should be
3682 included). Anyway, the type Time_t should be used.
3685 This variable contains the command used by Configure
3686 to copy to from the target host. Useful and available
3687 only during Perl build.
3688 The string ':' if not cross-compiling.
3691 This variable is used internally by Configure to determine the
3692 full pathname (if any) of the touch program. After Configure runs,
3693 the value is reset to a plain "touch" and is not useful.
3696 This variable is used internally by Configure to determine the
3697 full pathname (if any) of the tr program. After Configure runs,
3698 the value is reset to a plain "tr" and is not useful.
3701 This variable contains the value to be passed to the tr(1)
3702 command to transliterate a newline. Typical values are
3703 '\012' and '\n'. This is needed for EBCDIC systems where
3704 newline is not necessarily '\012'.
3707 This variable is defined but not used by Configure.
3708 The value is a plain '' and is not useful.
3711 This variable is the size of an U16 in bytes.
3714 This variable contains the C type used for Perl's U16.
3717 This variable is the size of an U32 in bytes.
3720 This variable contains the C type used for Perl's U32.
3723 This variable is the size of an U64 in bytes.
3726 This variable contains the C type used for Perl's U64.
3729 This variable is the size of an U8 in bytes.
3732 This variable contains the C type used for Perl's U8.
3735 This variable contains the format string used for printing a Uid_t.
3737 uidsign (uidsign.U):
3738 This variable contains the signedness of a uidtype.
3739 1 for unsigned, -1 for signed.
3741 uidsize (uidsize.U):
3742 This variable contains the size of a uidtype in bytes.
3744 uidtype (uidtype.U):
3745 This variable defines Uid_t to be something like uid_t, int,
3746 ushort, or whatever type is used to declare user ids in the kernel.
3749 This variable is used internally by Configure to determine the
3750 full pathname (if any) of the uname program. After Configure runs,
3751 the value is reset to a plain "uname" and is not useful.
3754 This variable is used internally by Configure to determine the
3755 full pathname (if any) of the uniq program. After Configure runs,
3756 the value is reset to a plain "uniq" and is not useful.
3758 uquadtype (quadtype.U):
3759 This variable defines Uquad_t to be something like unsigned long,
3760 unsigned int, unsigned long long, uint64_t, or whatever type is
3761 used for 64-bit integers.
3763 use5005threads (usethreads.U):
3764 This variable conditionally defines the USE_5005THREADS symbol,
3765 and indicates that Perl should be built to use the 5.005-based
3766 threading implementation.
3768 use64bitall (use64bits.U):
3769 This variable conditionally defines the USE_64_BIT_ALL symbol,
3770 and indicates that 64-bit integer types should be used
3771 when available. The maximal possible
3772 64-bitness is employed: LP64 or ILP64, meaning that you will
3773 be able to use more than 2 gigabytes of memory. This mode is
3774 even more binary incompatible than USE_64_BIT_INT. You may not
3775 be able to run the resulting executable in a 32-bit CPU at all or
3776 you may need at least to reboot your OS to 64-bit mode.
3778 use64bitint (use64bits.U):
3779 This variable conditionally defines the USE_64_BIT_INT symbol,
3780 and indicates that 64-bit integer types should be used
3781 when available. The minimal possible 64-bitness
3782 is employed, just enough to get 64-bit integers into Perl.
3783 This may mean using for example "long longs", while your memory
3784 may still be limited to 2 gigabytes.
3786 usecrosscompile (Cross.U):
3787 This variable conditionally defines the USE_CROSS_COMPILE symbol,
3788 and indicates that Perl has been cross-compiled.
3791 This variable indicates if the system supports dynamic
3792 loading of some sort. See also dlsrc and dlobj.
3794 useithreads (usethreads.U):
3795 This variable conditionally defines the USE_ITHREADS symbol,
3796 and indicates that Perl should be built to use the interpreter-based
3797 threading implementation.
3799 uselargefiles (uselfs.U):
3800 This variable conditionally defines the USE_LARGE_FILES symbol,
3801 and indicates that large file interfaces should be used when
3804 uselongdouble (uselongdbl.U):
3805 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3806 and indicates that long doubles should be used when available.
3808 usemorebits (usemorebits.U):
3809 This variable conditionally defines the USE_MORE_BITS symbol,
3810 and indicates that explicit 64-bit interfaces and long doubles
3811 should be used when available.
3813 usemultiplicity (usemultiplicity.U):
3814 This variable conditionally defines the MULTIPLICITY symbol,
3815 and indicates that Perl should be built to use multiplicity.
3817 usemymalloc (mallocsrc.U):
3818 This variable contains y if the malloc that comes with this package
3819 is desired over the system's version of malloc. People often include
3820 special versions of malloc for effiency, but such versions are often
3821 less portable. See also mallocsrc and mallocobj.
3822 If this is 'y', then -lmalloc is removed from $libs.
3825 This variable contains 'true' or 'false' depending whether the
3826 nm extraction is wanted or not.
3828 useopcode (Extensions.U):
3829 This variable holds either 'true' or 'false' to indicate
3830 whether the Opcode extension should be used. The sole
3831 use for this currently is to allow an easy mechanism
3832 for users to skip the Opcode extension from the Configure
3835 useperlio (useperlio.U):
3836 This variable conditionally defines the USE_PERLIO symbol,
3837 and indicates that the PerlIO abstraction should be
3840 useposix (Extensions.U):
3841 This variable holds either 'true' or 'false' to indicate
3842 whether the POSIX extension should be used. The sole
3843 use for this currently is to allow an easy mechanism
3844 for hints files to indicate that POSIX will not compile
3845 on a particular system.
3847 usereentrant (usethreads.U):
3848 This variable conditionally defines the USE_REENTRANT_API symbol,
3849 which indicates that the thread code may try to use the various
3850 _r versions of library functions. This is only potentially
3851 meaningful if usethreads is set and is very experimental, it is
3852 not even prompted for.
3855 This variable is set to true when the user agrees to use sfio.
3856 It is set to false when sfio is not available or when the user
3857 explicitely requests not to use sfio. It is here primarily so
3858 that command-line settings can override the auto-detection of
3859 d_sfio without running into a "WHOA THERE".
3861 useshrplib (libperl.U):
3862 This variable is set to 'yes' if the user wishes
3863 to build a shared libperl, and 'no' otherwise.
3865 usesocks (usesocks.U):
3866 This variable conditionally defines the USE_SOCKS symbol,
3867 and indicates that Perl should be built to use SOCKS.
3869 usethreads (usethreads.U):
3870 This variable conditionally defines the USE_5005THREADS symbol,
3871 and indicates that Perl should be built to use threads.
3873 usevendorprefix (vendorprefix.U):
3874 This variable tells whether the vendorprefix
3875 and consequently other vendor* paths are in use.
3877 usevfork (d_vfork.U):
3878 This variable is set to true when the user accepts to use vfork.
3879 It is set to false when no vfork is available or when the user
3880 explicitely requests not to use vfork.
3883 This variable holds the path of the include files, which is
3884 usually /usr/include. It is mainly used by other Configure units.
3887 This variable is defined but not used by Configure.
3888 The value is a plain '' and is not useful.
3890 uvoformat (perlxvf.U):
3891 This variable contains the format string used for printing
3892 a Perl UV as an unsigned octal integer.
3895 This variable is the size of a UV in bytes.
3898 This variable contains the C type used for Perl's UV.
3900 uvuformat (perlxvf.U):
3901 This variable contains the format string used for printing
3902 a Perl UV as an unsigned decimal integer.
3904 uvxformat (perlxvf.U):
3905 This variable contains the format string used for printing
3906 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3908 uvXUformat (perlxvf.U):
3909 This variable contains the format string used for printing
3910 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3912 vendorarch (vendorarch.U):
3913 This variable contains the value of the PERL_VENDORARCH symbol.
3914 It may have a ~ on the front.
3915 The standard distribution will put nothing in this directory.
3916 Vendors who distribute perl may wish to place their own
3917 architecture-dependent modules and extensions in this directory with
3918 MakeMaker Makefile.PL INSTALLDIRS=vendor
3919 or equivalent. See INSTALL for details.
3921 vendorarchexp (vendorarch.U):
3922 This variable is the ~name expanded version of vendorarch, so that you
3923 may use it directly in Makefiles or shell scripts.
3925 vendorbin (vendorbin.U):
3926 This variable contains the eventual value of the VENDORBIN symbol.
3927 It may have a ~ on the front.
3928 The standard distribution will put nothing in this directory.
3929 Vendors who distribute perl may wish to place additional
3930 binaries in this directory with
3931 MakeMaker Makefile.PL INSTALLDIRS=vendor
3932 or equivalent. See INSTALL for details.
3934 vendorbinexp (vendorbin.U):
3935 This variable is the ~name expanded version of vendorbin, so that you
3936 may use it directly in Makefiles or shell scripts.
3938 vendorlib (vendorlib.U):
3939 This variable contains the eventual value of the VENDORLIB symbol,
3940 which is the name of the private library for this package.
3941 The standard distribution will put nothing in this directory.
3942 Vendors who distribute perl may wish to place their own
3943 modules in this directory with
3944 MakeMaker Makefile.PL INSTALLDIRS=vendor
3945 or equivalent. See INSTALL for details.
3947 vendorlib_stem (vendorlib.U):
3948 This variable is $vendorlibexp with any trailing version-specific component
3949 removed. The elements in inc_version_list (inc_version_list.U) can
3950 be tacked onto this variable to generate a list of directories to search.
3952 vendorlibexp (vendorlib.U):
3953 This variable is the ~name expanded version of vendorlib, so that you
3954 may use it directly in Makefiles or shell scripts.
3956 vendorprefix (vendorprefix.U):
3957 This variable holds the full absolute path of the directory below
3958 which the vendor will install add-on packages.
3959 See INSTALL for usage and examples.
3961 vendorprefixexp (vendorprefix.U):
3962 This variable holds the full absolute path of the directory below
3963 which the vendor will install add-on packages. Derived from vendorprefix.
3965 version (patchlevel.U):
3966 The full version number of this package, such as 5.6.1 (or 5_6_1).
3967 This combines revision, patchlevel, and subversion to get the
3968 full version number, including any possible subversions.
3969 This is suitable for use as a directory name, and hence is
3970 filesystem dependent.
3972 version_patchlevel_string (patchlevel.U):
3973 This is a string combining version, subversion and
3974 perl_patchlevel (if perl_patchlevel is non-zero).
3975 It is typically something like
3976 'version 7 subversion 1' or
3977 'version 7 subversion 1 patchlevel 11224'
3978 It is computed here to avoid duplication of code in myconfig.SH
3981 versiononly (versiononly.U):
3982 If set, this symbol indicates that only the version-specific
3983 components of a perl installation should be installed.
3984 This may be useful for making a test installation of a new
3985 version without disturbing the existing installation.
3986 Setting versiononly is equivalent to setting installperl's -v option.
3987 In particular, the non-versioned scripts and programs such as
3988 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
3989 (see INSTALL for a more complete list). Nor are the man
3991 Usually, this is undef.
3994 This variable is defined but not used by Configure.
3995 The value is a plain '' and is not useful.
3997 voidflags (voidflags.U):
3998 This variable contains the eventual value of the VOIDFLAGS symbol,
3999 which indicates how much support of the void type is given by this
4000 compiler. See VOIDFLAGS for more info.
4003 This variable holds extra path (space-separated) used to find
4004 libraries on this platform, for example CPU-specific libraries
4005 (on multi-CPU platforms) may be listed here.
4007 xs_apiversion (xs_apiversion.U):
4008 This variable contains the version of the oldest perl binary
4009 compatible with the present perl. perl.c:incpush() and
4010 lib/lib.pm will automatically search in $sitearch for older
4011 directories across major versions back to xs_apiversion.
4012 This is only useful if you have a perl library directory tree
4013 structured like the default one.
4014 See INSTALL for how this works.
4015 The versioned site_perl directory was introduced in 5.005,
4016 so that is the lowest possible value.
4017 Since this can depend on compile time options (such as
4018 bincompat) it is set by Configure. Other non-default sources
4019 of potential incompatibility, such as multiplicity, threads,
4020 debugging, 64bits, sfio, etc., are not checked for currently,
4021 though in principle we could go snooping around in old
4025 This variable holds the name of the compiler compiler we
4026 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4029 This variable contains any additional yacc flags desired by the
4030 user. It is up to the Makefile to use this.
4033 This variable is defined but not used by Configure.
4034 The value is a plain '' and is not useful.
4037 This variable is used internally by Configure to determine the
4038 full pathname (if any) of the zip program. After Configure runs,
4039 the value is reset to a plain "zip" and is not useful.