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.
481 This variable conditionally defines the HAS_DIRFD constant,
482 which indicates to the C program that dirfd() is available
483 to return the file descriptor of a directory stream.
485 d_dirnamlen (i_dirent.U):
486 This variable conditionally defines DIRNAMLEN, which indicates
487 to the C program that the length of directory entry names is
488 provided by a d_namelen field.
490 d_dlerror (d_dlerror.U):
491 This variable conditionally defines the HAS_DLERROR symbol, which
492 indicates to the C program that the dlerror() routine is available.
494 d_dlopen (d_dlopen.U):
495 This variable conditionally defines the HAS_DLOPEN symbol, which
496 indicates to the C program that the dlopen() routine is available.
498 d_dlsymun (d_dlsymun.U):
499 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
500 indicates that we need to prepend an underscore to the symbol
501 name before calling dlsym().
503 d_dosuid (d_dosuid.U):
504 This variable conditionally defines the symbol DOSUID, which
505 tells the C program that it should insert setuid emulation code
506 on hosts which have setuid #! scripts disabled.
508 d_drand48proto (d_drand48proto.U):
509 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
510 which indicates to the C program that the system provides
511 a prototype for the drand48() function. Otherwise, it is
512 up to the program to supply one.
515 This variable conditionally defines HAS_DUP2 if dup2() is
516 available to duplicate file descriptors.
518 d_eaccess (d_eaccess.U):
519 This variable conditionally defines the HAS_EACCESS symbol, which
520 indicates to the C program that the eaccess() routine is available.
522 d_endgrent (d_endgrent.U):
523 This variable conditionally defines the HAS_ENDGRENT symbol, which
524 indicates to the C program that the endgrent() routine is available
525 for sequential access of the group database.
527 d_endhent (d_endhent.U):
528 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
529 available to close whatever was being used for host queries.
531 d_endnent (d_endnent.U):
532 This variable conditionally defines HAS_ENDNETENT if endnetent() is
533 available to close whatever was being used for network queries.
535 d_endpent (d_endpent.U):
536 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
537 available to close whatever was being used for protocol queries.
539 d_endpwent (d_endpwent.U):
540 This variable conditionally defines the HAS_ENDPWENT symbol, which
541 indicates to the C program that the endpwent() routine is available
542 for sequential access of the passwd database.
544 d_endsent (d_endsent.U):
545 This variable conditionally defines HAS_ENDSERVENT if endservent() is
546 available to close whatever was being used for service queries.
548 d_eofnblk (nblock_io.U):
549 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
550 when reading from a non-blocking I/O source.
553 This variable conditionally defines the symbols EUNICE and VAX, which
554 alerts the C program that it must deal with ideosyncracies of VMS.
556 d_fchdir (d_fchdir.U):
557 This variable conditionally defines the HAS_FCHDIR symbol, which
558 indicates to the C program that the fchdir() routine is available.
560 d_fchmod (d_fchmod.U):
561 This variable conditionally defines the HAS_FCHMOD symbol, which
562 indicates to the C program that the fchmod() routine is available
563 to change mode of opened files.
565 d_fchown (d_fchown.U):
566 This variable conditionally defines the HAS_FCHOWN symbol, which
567 indicates to the C program that the fchown() routine is available
568 to change ownership of opened files.
571 This variable conditionally defines the HAS_FCNTL symbol, and indicates
572 whether the fcntl() function exists
574 d_fcntl_can_lock (d_fcntl_can_lock.U):
575 This variable conditionally defines the FCNTL_CAN_LOCK symbol
576 and indicates whether file locking with fcntl() works.
578 d_fd_macros (d_fd_set.U):
579 This variable contains the eventual value of the HAS_FD_MACROS symbol,
580 which indicates if your C compiler knows about the macros which
581 manipulate an fd_set.
583 d_fd_set (d_fd_set.U):
584 This variable contains the eventual value of the HAS_FD_SET symbol,
585 which indicates if your C compiler knows about the fd_set typedef.
587 d_fds_bits (d_fd_set.U):
588 This variable contains the eventual value of the HAS_FDS_BITS symbol,
589 which indicates if your fd_set typedef contains the fds_bits member.
590 If you have an fd_set typedef, but the dweebs who installed it did
591 a half-fast job and neglected to provide the macros to manipulate
592 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
594 d_fgetpos (d_fgetpos.U):
595 This variable conditionally defines HAS_FGETPOS if fgetpos() is
596 available to get the file position indicator.
598 d_finite (d_finite.U):
599 This variable conditionally defines the HAS_FINITE symbol, which
600 indicates to the C program that the finite() routine is available.
602 d_finitel (d_finitel.U):
603 This variable conditionally defines the HAS_FINITEL symbol, which
604 indicates to the C program that the finitel() routine is available.
606 d_flexfnam (d_flexfnam.U):
607 This variable conditionally defines the FLEXFILENAMES symbol, which
608 indicates that the system supports filenames longer than 14 characters.
611 This variable conditionally defines HAS_FLOCK if flock() is
612 available to do file locking.
614 d_flockproto (d_flockproto.U):
615 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
616 which indicates to the C program that the system provides
617 a prototype for the flock() function. Otherwise, it is
618 up to the program to supply one.
621 This variable conditionally defines the HAS_FORK symbol, which
622 indicates to the C program that the fork() routine is available.
624 d_fp_class (d_fp_class.U):
625 This variable conditionally defines the HAS_FP_CLASS symbol, which
626 indicates to the C program that the fp_class() routine is available.
628 d_fpathconf (d_pathconf.U):
629 This variable conditionally defines the HAS_FPATHCONF symbol, which
630 indicates to the C program that the pathconf() routine is available
631 to determine file-system related limits and options associated
632 with a given open file descriptor.
634 d_fpclass (d_fpclass.U):
635 This variable conditionally defines the HAS_FPCLASS symbol, which
636 indicates to the C program that the fpclass() routine is available.
638 d_fpclassify (d_fpclassify.U):
639 This variable conditionally defines the HAS_FPCLASSIFY symbol, which
640 indicates to the C program that the fpclassify() routine is available.
642 d_fpclassl (d_fpclassl.U):
643 This variable conditionally defines the HAS_FPCLASSL symbol, which
644 indicates to the C program that the fpclassl() routine is available.
646 d_fpos64_t (d_fpos64_t.U):
647 This symbol will be defined if the C compiler supports fpos64_t.
649 d_frexpl (d_frexpl.U):
650 This variable conditionally defines the HAS_FREXPL symbol, which
651 indicates to the C program that the frexpl() routine is available.
653 d_fs_data_s (d_fs_data_s.U):
654 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
655 which indicates that the struct fs_data is supported.
657 d_fseeko (d_fseeko.U):
658 This variable conditionally defines the HAS_FSEEKO symbol, which
659 indicates to the C program that the fseeko() routine is available.
661 d_fsetpos (d_fsetpos.U):
662 This variable conditionally defines HAS_FSETPOS if fsetpos() is
663 available to set the file position indicator.
665 d_fstatfs (d_fstatfs.U):
666 This variable conditionally defines the HAS_FSTATFS symbol, which
667 indicates to the C program that the fstatfs() routine is available.
669 d_fstatvfs (d_statvfs.U):
670 This variable conditionally defines the HAS_FSTATVFS symbol, which
671 indicates to the C program that the fstatvfs() routine is available.
674 This variable conditionally defines the HAS_FSYNC symbol, which
675 indicates to the C program that the fsync() routine is available.
677 d_ftello (d_ftello.U):
678 This variable conditionally defines the HAS_FTELLO symbol, which
679 indicates to the C program that the ftello() routine is available.
682 This variable conditionally defines the HAS_FTIME symbol, which indicates
683 that the ftime() routine exists. The ftime() routine is basically
684 a sub-second accuracy clock.
686 d_Gconvert (d_gconvert.U):
687 This variable holds what Gconvert is defined as to convert
688 floating point numbers into strings. It could be 'gconvert'
689 or a more complex macro emulating gconvert with gcvt() or sprintf.
691 d_Gconvert='gconvert((x),(n),(t),(b))'
692 d_Gconvert='gcvt((x),(n),(b))'
693 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
695 d_getcwd (d_getcwd.U):
696 This variable conditionally defines the HAS_GETCWD symbol, which
697 indicates to the C program that the getcwd() routine is available
698 to get the current working directory.
700 d_getespwnam (d_getespwnam.U):
701 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
702 available to retrieve enchanced (shadow) password entries by name.
704 d_getfsstat (d_getfsstat.U):
705 This variable conditionally defines the HAS_GETFSSTAT symbol, which
706 indicates to the C program that the getfsstat() routine is available.
708 d_getgrent (d_getgrent.U):
709 This variable conditionally defines the HAS_GETGRENT symbol, which
710 indicates to the C program that the getgrent() routine is available
711 for sequential access of the group database.
713 d_getgrps (d_getgrps.U):
714 This variable conditionally defines the HAS_GETGROUPS symbol, which
715 indicates to the C program that the getgroups() routine is available
716 to get the list of process groups.
718 d_gethbyaddr (d_gethbyad.U):
719 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
720 indicates to the C program that the gethostbyaddr() routine is available
721 to look up hosts by their IP addresses.
723 d_gethbyname (d_gethbynm.U):
724 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
725 indicates to the C program that the gethostbyname() routine is available
726 to look up host names in some data base or other.
728 d_gethent (d_gethent.U):
729 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
730 available to look up host names in some data base or another.
732 d_gethname (d_gethname.U):
733 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
734 indicates to the C program that the gethostname() routine may be
735 used to derive the host name.
737 d_gethostprotos (d_gethostprotos.U):
738 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
739 which indicates to the C program that <netdb.h> supplies
740 prototypes for the various gethost*() functions.
741 See also netdbtype.U for probing for various netdb types.
743 d_getitimer (d_getitimer.U):
744 This variable conditionally defines the HAS_GETITIMER symbol, which
745 indicates to the C program that the getitimer() routine is available.
747 d_getlogin (d_getlogin.U):
748 This variable conditionally defines the HAS_GETLOGIN symbol, which
749 indicates to the C program that the getlogin() routine is available
750 to get the login name.
752 d_getmnt (d_getmnt.U):
753 This variable conditionally defines the HAS_GETMNT symbol, which
754 indicates to the C program that the getmnt() routine is available
755 to retrieve one or more mount info blocks by filename.
757 d_getmntent (d_getmntent.U):
758 This variable conditionally defines the HAS_GETMNTENT symbol, which
759 indicates to the C program that the getmntent() routine is available
760 to iterate through mounted files to get their mount info.
762 d_getnbyaddr (d_getnbyad.U):
763 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
764 indicates to the C program that the getnetbyaddr() routine is available
765 to look up networks by their IP addresses.
767 d_getnbyname (d_getnbynm.U):
768 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
769 indicates to the C program that the getnetbyname() routine is available
770 to look up networks by their names.
772 d_getnent (d_getnent.U):
773 This variable conditionally defines HAS_GETNETENT if getnetent() is
774 available to look up network names in some data base or another.
776 d_getnetprotos (d_getnetprotos.U):
777 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
778 which indicates to the C program that <netdb.h> supplies
779 prototypes for the various getnet*() functions.
780 See also netdbtype.U for probing for various netdb types.
782 d_getpagsz (d_getpagsz.U):
783 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
784 is available to get the system page size.
786 d_getpbyname (d_getprotby.U):
787 This variable conditionally defines the HAS_GETPROTOBYNAME
788 symbol, which indicates to the C program that the
789 getprotobyname() routine is available to look up protocols
792 d_getpbynumber (d_getprotby.U):
793 This variable conditionally defines the HAS_GETPROTOBYNUMBER
794 symbol, which indicates to the C program that the
795 getprotobynumber() routine is available to look up protocols
798 d_getpent (d_getpent.U):
799 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
800 available to look up protocols in some data base or another.
802 d_getpgid (d_getpgid.U):
803 This variable conditionally defines the HAS_GETPGID symbol, which
804 indicates to the C program that the getpgid(pid) function
805 is available to get the process group id.
807 d_getpgrp2 (d_getpgrp2.U):
808 This variable conditionally defines the HAS_GETPGRP2 symbol, which
809 indicates to the C program that the getpgrp2() (as in DG/UX) routine
810 is available to get the current process group.
812 d_getpgrp (d_getpgrp.U):
813 This variable conditionally defines HAS_GETPGRP if getpgrp() is
814 available to get the current process group.
816 d_getppid (d_getppid.U):
817 This variable conditionally defines the HAS_GETPPID symbol, which
818 indicates to the C program that the getppid() routine is available
819 to get the parent process ID.
821 d_getprior (d_getprior.U):
822 This variable conditionally defines HAS_GETPRIORITY if getpriority()
823 is available to get a process's priority.
825 d_getprotoprotos (d_getprotoprotos.U):
826 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
827 which indicates to the C program that <netdb.h> supplies
828 prototypes for the various getproto*() functions.
829 See also netdbtype.U for probing for various netdb types.
831 d_getprpwnam (d_getprpwnam.U):
832 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
833 available to retrieve protected (shadow) password entries by name.
835 d_getpwent (d_getpwent.U):
836 This variable conditionally defines the HAS_GETPWENT symbol, which
837 indicates to the C program that the getpwent() routine is available
838 for sequential access of the passwd database.
840 d_getsbyname (d_getsrvby.U):
841 This variable conditionally defines the HAS_GETSERVBYNAME
842 symbol, which indicates to the C program that the
843 getservbyname() routine is available to look up services
846 d_getsbyport (d_getsrvby.U):
847 This variable conditionally defines the HAS_GETSERVBYPORT
848 symbol, which indicates to the C program that the
849 getservbyport() routine is available to look up services
852 d_getsent (d_getsent.U):
853 This variable conditionally defines HAS_GETSERVENT if getservent() is
854 available to look up network services in some data base or another.
856 d_getservprotos (d_getservprotos.U):
857 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
858 which indicates to the C program that <netdb.h> supplies
859 prototypes for the various getserv*() functions.
860 See also netdbtype.U for probing for various netdb types.
862 d_getspnam (d_getspnam.U):
863 This variable conditionally defines HAS_GETSPNAM if getspnam() is
864 available to retrieve SysV shadow password entries by name.
866 d_gettimeod (d_ftime.U):
867 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
868 indicates that the gettimeofday() system call exists (to obtain a
869 sub-second accuracy clock). You should probably include <sys/resource.h>.
871 d_gnulibc (d_gnulibc.U):
872 Defined if we're dealing with the GNU C Library.
874 d_grpasswd (i_grp.U):
875 This variable conditionally defines GRPASSWD, which indicates
876 that struct group in <grp.h> contains gr_passwd.
878 d_hasmntopt (d_hasmntopt.U):
879 This variable conditionally defines the HAS_HASMNTOPT symbol, which
880 indicates to the C program that the hasmntopt() routine is available
881 to query the mount options of file systems.
884 This variable conditionally defines HAS_HTONL if htonl() and its
885 friends are available to do network order byte swapping.
887 d_index (d_strchr.U):
888 This variable conditionally defines HAS_INDEX if index() and
889 rindex() are available for string searching.
891 d_inetaton (d_inetaton.U):
892 This variable conditionally defines the HAS_INET_ATON symbol, which
893 indicates to the C program that the inet_aton() function is available
894 to parse IP address "dotted-quad" strings.
896 d_int64_t (d_int64_t.U):
897 This symbol will be defined if the C compiler supports int64_t.
899 d_isascii (d_isascii.U):
900 This variable conditionally defines the HAS_ISASCII constant,
901 which indicates to the C program that isascii() is available.
903 d_isfinite (d_isfinite.U):
904 This variable conditionally defines the HAS_ISFINITE symbol, which
905 indicates to the C program that the isfinite() routine is available.
908 This variable conditionally defines the HAS_ISINF symbol, which
909 indicates to the C program that the isinf() routine is available.
912 This variable conditionally defines the HAS_ISNAN symbol, which
913 indicates to the C program that the isnan() routine is available.
915 d_isnanl (d_isnanl.U):
916 This variable conditionally defines the HAS_ISNANL symbol, which
917 indicates to the C program that the isnanl() routine is available.
919 d_killpg (d_killpg.U):
920 This variable conditionally defines the HAS_KILLPG symbol, which
921 indicates to the C program that the killpg() routine is available
922 to kill process groups.
924 d_lchown (d_lchown.U):
925 This variable conditionally defines the HAS_LCHOWN symbol, which
926 indicates to the C program that the lchown() routine is available
927 to operate on a symbolic link (instead of following the link).
929 d_ldbl_dig (d_ldbl_dig.U):
930 This variable conditionally defines d_ldbl_dig if this system's
931 header files provide LDBL_DIG, which is the number of significant
932 digits in a long double precision number.
935 This variable conditionally defines HAS_LINK if link() is
936 available to create hard links.
938 d_locconv (d_locconv.U):
939 This variable conditionally defines HAS_LOCALECONV if localeconv() is
940 available for numeric and monetary formatting conventions.
943 This variable conditionally defines HAS_LOCKF if lockf() is
944 available to do file locking.
946 d_longdbl (d_longdbl.U):
947 This variable conditionally defines HAS_LONG_DOUBLE if
948 the long double type is supported.
950 d_longlong (d_longlong.U):
951 This variable conditionally defines HAS_LONG_LONG if
952 the long long type is supported.
954 d_lseekproto (d_lseekproto.U):
955 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
956 which indicates to the C program that the system provides
957 a prototype for the lseek() function. Otherwise, it is
958 up to the program to supply one.
961 This variable conditionally defines HAS_LSTAT if lstat() is
962 available to do file stats on symbolic links.
964 d_madvise (d_madvise.U):
965 This variable conditionally defines HAS_MADVISE if madvise() is
966 available to map a file into memory.
969 This variable conditionally defines the HAS_MBLEN symbol, which
970 indicates to the C program that the mblen() routine is available
971 to find the number of bytes in a multibye character.
973 d_mbstowcs (d_mbstowcs.U):
974 This variable conditionally defines the HAS_MBSTOWCS symbol, which
975 indicates to the C program that the mbstowcs() routine is available
976 to convert a multibyte string into a wide character string.
978 d_mbtowc (d_mbtowc.U):
979 This variable conditionally defines the HAS_MBTOWC symbol, which
980 indicates to the C program that the mbtowc() routine is available
981 to convert multibyte to a wide character.
983 d_memchr (d_memchr.U):
984 This variable conditionally defines the HAS_MEMCHR symbol, which
985 indicates to the C program that the memchr() routine is available
986 to locate characters within a C string.
988 d_memcmp (d_memcmp.U):
989 This variable conditionally defines the HAS_MEMCMP symbol, which
990 indicates to the C program that the memcmp() routine is available
991 to compare blocks of memory.
993 d_memcpy (d_memcpy.U):
994 This variable conditionally defines the HAS_MEMCPY symbol, which
995 indicates to the C program that the memcpy() routine is available
996 to copy blocks of memory.
998 d_memmove (d_memmove.U):
999 This variable conditionally defines the HAS_MEMMOVE symbol, which
1000 indicates to the C program that the memmove() routine is available
1001 to copy potentatially overlapping blocks of memory.
1003 d_memset (d_memset.U):
1004 This variable conditionally defines the HAS_MEMSET symbol, which
1005 indicates to the C program that the memset() routine is available
1006 to set blocks of memory.
1008 d_mkdir (d_mkdir.U):
1009 This variable conditionally defines the HAS_MKDIR symbol, which
1010 indicates to the C program that the mkdir() routine is available
1011 to create directories..
1013 d_mkdtemp (d_mkdtemp.U):
1014 This variable conditionally defines the HAS_MKDTEMP symbol, which
1015 indicates to the C program that the mkdtemp() routine is available
1016 to exclusively create a uniquely named temporary directory.
1018 d_mkfifo (d_mkfifo.U):
1019 This variable conditionally defines the HAS_MKFIFO symbol, which
1020 indicates to the C program that the mkfifo() routine is available.
1022 d_mkstemp (d_mkstemp.U):
1023 This variable conditionally defines the HAS_MKSTEMP symbol, which
1024 indicates to the C program that the mkstemp() routine is available
1025 to exclusively create and open a uniquely named temporary file.
1027 d_mkstemps (d_mkstemps.U):
1028 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1029 indicates to the C program that the mkstemps() routine is available
1030 to exclusively create and open a uniquely named (with a suffix)
1033 d_mktime (d_mktime.U):
1034 This variable conditionally defines the HAS_MKTIME symbol, which
1035 indicates to the C program that the mktime() routine is available.
1038 This variable conditionally defines HAS_MMAP if mmap() is
1039 available to map a file into memory.
1041 d_modfl (d_modfl.U):
1042 This variable conditionally defines the HAS_MODFL symbol, which
1043 indicates to the C program that the modfl() routine is available.
1045 d_modfl_pow32_bug (d_modfl.U):
1046 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1047 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1048 For example from 4294967303.150000 one would get 4294967302.000000
1049 and 1.150000. The bug has been seen in certain versions of glibc,
1050 release 2.2.2 is known to be okay.
1052 d_mprotect (d_mprotect.U):
1053 This variable conditionally defines HAS_MPROTECT if mprotect() is
1054 available to modify the access protection of a memory mapped file.
1057 This variable conditionally defines the HAS_MSG symbol, which
1058 indicates that the entire msg*(2) library is present.
1060 d_msg_ctrunc (d_socket.U):
1061 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1062 which indicates that the MSG_CTRUNC is available. #ifdef is
1063 not enough because it may be an enum, glibc has been known to do this.
1065 d_msg_dontroute (d_socket.U):
1066 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1067 which indicates that the MSG_DONTROUTE is available. #ifdef is
1068 not enough because it may be an enum, glibc has been known to do this.
1070 d_msg_oob (d_socket.U):
1071 This variable conditionally defines the HAS_MSG_OOB symbol,
1072 which indicates that the MSG_OOB is available. #ifdef is
1073 not enough because it may be an enum, glibc has been known to do this.
1075 d_msg_peek (d_socket.U):
1076 This variable conditionally defines the HAS_MSG_PEEK symbol,
1077 which indicates that the MSG_PEEK is available. #ifdef is
1078 not enough because it may be an enum, glibc has been known to do this.
1080 d_msg_proxy (d_socket.U):
1081 This variable conditionally defines the HAS_MSG_PROXY symbol,
1082 which indicates that the MSG_PROXY is available. #ifdef is
1083 not enough because it may be an enum, glibc has been known to do this.
1085 d_msgctl (d_msgctl.U):
1086 This variable conditionally defines the HAS_MSGCTL symbol, which
1087 indicates to the C program that the msgctl() routine is available.
1089 d_msgget (d_msgget.U):
1090 This variable conditionally defines the HAS_MSGGET symbol, which
1091 indicates to the C program that the msgget() routine is available.
1093 d_msghdr_s (d_msghdr_s.U):
1094 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1095 which indicates that the struct msghdr is supported.
1097 d_msgrcv (d_msgrcv.U):
1098 This variable conditionally defines the HAS_MSGRCV symbol, which
1099 indicates to the C program that the msgrcv() routine is available.
1101 d_msgsnd (d_msgsnd.U):
1102 This variable conditionally defines the HAS_MSGSND symbol, which
1103 indicates to the C program that the msgsnd() routine is available.
1105 d_msync (d_msync.U):
1106 This variable conditionally defines HAS_MSYNC if msync() is
1107 available to synchronize a mapped file.
1109 d_munmap (d_munmap.U):
1110 This variable conditionally defines HAS_MUNMAP if munmap() is
1111 available to unmap a region mapped by mmap().
1113 d_mymalloc (mallocsrc.U):
1114 This variable conditionally defines MYMALLOC in case other parts
1115 of the source want to take special action if MYMALLOC is used.
1116 This may include different sorts of profiling or error detection.
1119 This variable conditionally defines the HAS_NICE symbol, which
1120 indicates to the C program that the nice() routine is available.
1122 d_nl_langinfo (d_nl_langinfo.U):
1123 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1124 indicates to the C program that the nl_langinfo() routine is available.
1126 d_nv_preserves_uv (perlxv.U):
1127 This variable indicates whether a variable of type nvtype
1128 can preserve all the bits a variable of type uvtype.
1130 d_nv_preserves_uv_bits (perlxv.U):
1131 This variable indicates how many of bits type uvtype
1132 a variable nvtype can preserve.
1134 d_off64_t (d_off64_t.U):
1135 This symbol will be defined if the C compiler supports off64_t.
1137 d_old_pthread_create_joinable (d_pthrattrj.U):
1138 This variable conditionally defines pthread_create_joinable.
1139 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1141 d_oldpthreads (usethreads.U):
1142 This variable conditionally defines the OLD_PTHREADS_API symbol,
1143 and indicates that Perl should be built to use the old
1144 draft POSIX threads API. This is only potentially meaningful if
1147 d_oldsock (d_socket.U):
1148 This variable conditionally defines the OLDSOCKET symbol, which
1149 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1151 d_open3 (d_open3.U):
1152 This variable conditionally defines the HAS_OPEN3 manifest constant,
1153 which indicates to the C program that the 3 argument version of
1154 the open(2) function is available.
1156 d_pathconf (d_pathconf.U):
1157 This variable conditionally defines the HAS_PATHCONF symbol, which
1158 indicates to the C program that the pathconf() routine is available
1159 to determine file-system related limits and options associated
1160 with a given filename.
1162 d_pause (d_pause.U):
1163 This variable conditionally defines the HAS_PAUSE symbol, which
1164 indicates to the C program that the pause() routine is available
1165 to suspend a process until a signal is received.
1167 d_perl_otherlibdirs (otherlibdirs.U):
1168 This variable conditionally defines PERL_OTHERLIBDIRS, which
1169 contains a colon-separated set of paths for the perl binary to
1170 include in @INC. See also otherlibdirs.
1172 d_phostname (d_gethname.U):
1173 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1174 contains the shell command which, when fed to popen(), may be
1175 used to derive the host name.
1178 This variable conditionally defines the HAS_PIPE symbol, which
1179 indicates to the C program that the pipe() routine is available
1180 to create an inter-process channel.
1183 This variable conditionally defines the HAS_POLL symbol, which
1184 indicates to the C program that the poll() routine is available
1185 to poll active file descriptors.
1187 d_portable (d_portable.U):
1188 This variable conditionally defines the PORTABLE symbol, which
1189 indicates to the C program that it should not assume that it is
1190 running on the machine it was compiled on.
1192 d_PRId64 (quadfio.U):
1193 This variable conditionally defines the PERL_PRId64 symbol, which
1194 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1196 d_PRIeldbl (longdblfio.U):
1197 This variable conditionally defines the PERL_PRIfldbl symbol, which
1198 indiciates that stdio has a symbol to print long doubles.
1200 d_PRIEUldbl (longdblfio.U):
1201 This variable conditionally defines the PERL_PRIfldbl symbol, which
1202 indiciates that stdio has a symbol to print long doubles.
1203 The 'U' in the name is to separate this from d_PRIeldbl so that even
1204 case-blind systems can see the difference.
1206 d_PRIfldbl (longdblfio.U):
1207 This variable conditionally defines the PERL_PRIfldbl symbol, which
1208 indiciates that stdio has a symbol to print long doubles.
1210 d_PRIFUldbl (longdblfio.U):
1211 This variable conditionally defines the PERL_PRIfldbl symbol, which
1212 indiciates that stdio has a symbol to print long doubles.
1213 The 'U' in the name is to separate this from d_PRIfldbl so that even
1214 case-blind systems can see the difference.
1216 d_PRIgldbl (longdblfio.U):
1217 This variable conditionally defines the PERL_PRIfldbl symbol, which
1218 indiciates that stdio has a symbol to print long doubles.
1220 d_PRIGUldbl (longdblfio.U):
1221 This variable conditionally defines the PERL_PRIfldbl symbol, which
1222 indiciates that stdio has a symbol to print long doubles.
1223 The 'U' in the name is to separate this from d_PRIgldbl so that even
1224 case-blind systems can see the difference.
1226 d_PRIi64 (quadfio.U):
1227 This variable conditionally defines the PERL_PRIi64 symbol, which
1228 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1230 d_PRIo64 (quadfio.U):
1231 This variable conditionally defines the PERL_PRIo64 symbol, which
1232 indiciates that stdio has a symbol to print 64-bit octal numbers.
1234 d_PRIu64 (quadfio.U):
1235 This variable conditionally defines the PERL_PRIu64 symbol, which
1236 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1239 d_PRIx64 (quadfio.U):
1240 This variable conditionally defines the PERL_PRIx64 symbol, which
1241 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1243 d_PRIXU64 (quadfio.U):
1244 This variable conditionally defines the PERL_PRIXU64 symbol, which
1245 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1246 The 'U' in the name is to separate this from d_PRIx64 so that even
1247 case-blind systems can see the difference.
1249 d_procselfexe (d_procselfexe.U):
1250 Defined if $procselfexe is symlink to the absolute
1251 pathname of the executing program.
1253 d_pthread_atfork (d_pthread_atfork.U):
1254 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1255 which indicates to the C program that the pthread_atfork()
1256 routine is available.
1258 d_pthread_yield (d_pthread_y.U):
1259 This variable conditionally defines the HAS_PTHREAD_YIELD
1260 symbol if the pthread_yield routine is available to yield
1261 the execution of the current thread.
1264 This variable conditionally defines PWAGE, which indicates
1265 that struct passwd contains pw_age.
1267 d_pwchange (i_pwd.U):
1268 This variable conditionally defines PWCHANGE, which indicates
1269 that struct passwd contains pw_change.
1271 d_pwclass (i_pwd.U):
1272 This variable conditionally defines PWCLASS, which indicates
1273 that struct passwd contains pw_class.
1275 d_pwcomment (i_pwd.U):
1276 This variable conditionally defines PWCOMMENT, which indicates
1277 that struct passwd contains pw_comment.
1279 d_pwexpire (i_pwd.U):
1280 This variable conditionally defines PWEXPIRE, which indicates
1281 that struct passwd contains pw_expire.
1283 d_pwgecos (i_pwd.U):
1284 This variable conditionally defines PWGECOS, which indicates
1285 that struct passwd contains pw_gecos.
1287 d_pwpasswd (i_pwd.U):
1288 This variable conditionally defines PWPASSWD, which indicates
1289 that struct passwd contains pw_passwd.
1291 d_pwquota (i_pwd.U):
1292 This variable conditionally defines PWQUOTA, which indicates
1293 that struct passwd contains pw_quota.
1295 d_qgcvt (d_qgcvt.U):
1296 This variable conditionally defines the HAS_QGCVT symbol, which
1297 indicates to the C program that the qgcvt() routine is available.
1299 d_quad (quadtype.U):
1300 This variable, if defined, tells that there's a 64-bit integer type,
1303 d_readdir (d_readdir.U):
1304 This variable conditionally defines HAS_READDIR if readdir() is
1305 available to read directory entries.
1307 d_readlink (d_readlink.U):
1308 This variable conditionally defines the HAS_READLINK symbol, which
1309 indicates to the C program that the readlink() routine is available
1310 to read the value of a symbolic link.
1312 d_readv (d_readv.U):
1313 This variable conditionally defines the HAS_READV symbol, which
1314 indicates to the C program that the readv() routine is available.
1316 d_recvmsg (d_recvmsg.U):
1317 This variable conditionally defines the HAS_RECVMSG symbol, which
1318 indicates to the C program that the recvmsg() routine is available.
1320 d_rename (d_rename.U):
1321 This variable conditionally defines the HAS_RENAME symbol, which
1322 indicates to the C program that the rename() routine is available
1325 d_rewinddir (d_readdir.U):
1326 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1329 d_rmdir (d_rmdir.U):
1330 This variable conditionally defines HAS_RMDIR if rmdir() is
1331 available to remove directories.
1333 d_safebcpy (d_safebcpy.U):
1334 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1335 the bcopy() routine can do overlapping copies. Normally, you
1336 should probably use memmove().
1338 d_safemcpy (d_safemcpy.U):
1339 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1340 the memcpy() routine can do overlapping copies.
1341 For overlapping copies, memmove() should be used, if available.
1343 d_sanemcmp (d_sanemcmp.U):
1344 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1345 the memcpy() routine is available and can be used to compare relative
1346 magnitudes of chars with their high bits set.
1348 d_sbrkproto (d_sbrkproto.U):
1349 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1350 which indicates to the C program that the system provides
1351 a prototype for the sbrk() function. Otherwise, it is
1352 up to the program to supply one.
1354 d_sched_yield (d_pthread_y.U):
1355 This variable conditionally defines the HAS_SCHED_YIELD
1356 symbol if the sched_yield routine is available to yield
1357 the execution of the current thread.
1359 d_scm_rights (d_socket.U):
1360 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1361 which indicates that the SCM_RIGHTS is available. #ifdef is
1362 not enough because it may be an enum, glibc has been known to do this.
1364 d_SCNfldbl (longdblfio.U):
1365 This variable conditionally defines the PERL_PRIfldbl symbol, which
1366 indiciates that stdio has a symbol to scan long doubles.
1368 d_seekdir (d_readdir.U):
1369 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1372 d_select (d_select.U):
1373 This variable conditionally defines HAS_SELECT if select() is
1374 available to select active file descriptors. A <sys/time.h>
1375 inclusion may be necessary for the timeout field.
1378 This variable conditionally defines the HAS_SEM symbol, which
1379 indicates that the entire sem*(2) library is present.
1381 d_semctl (d_semctl.U):
1382 This variable conditionally defines the HAS_SEMCTL symbol, which
1383 indicates to the C program that the semctl() routine is available.
1385 d_semctl_semid_ds (d_union_semun.U):
1386 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1387 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1389 d_semctl_semun (d_union_semun.U):
1390 This variable conditionally defines USE_SEMCTL_SEMUN, which
1391 indicates that union semun is to be used for semctl IPC_STAT.
1393 d_semget (d_semget.U):
1394 This variable conditionally defines the HAS_SEMGET symbol, which
1395 indicates to the C program that the semget() routine is available.
1397 d_semop (d_semop.U):
1398 This variable conditionally defines the HAS_SEMOP symbol, which
1399 indicates to the C program that the semop() routine is available.
1401 d_sendmsg (d_sendmsg.U):
1402 This variable conditionally defines the HAS_SENDMSG symbol, which
1403 indicates to the C program that the sendmsg() routine is available.
1405 d_setegid (d_setegid.U):
1406 This variable conditionally defines the HAS_SETEGID symbol, which
1407 indicates to the C program that the setegid() routine is available
1408 to change the effective gid of the current program.
1410 d_seteuid (d_seteuid.U):
1411 This variable conditionally defines the HAS_SETEUID symbol, which
1412 indicates to the C program that the seteuid() routine is available
1413 to change the effective uid of the current program.
1415 d_setgrent (d_setgrent.U):
1416 This variable conditionally defines the HAS_SETGRENT symbol, which
1417 indicates to the C program that the setgrent() routine is available
1418 for initializing sequential access to the group database.
1420 d_setgrps (d_setgrps.U):
1421 This variable conditionally defines the HAS_SETGROUPS symbol, which
1422 indicates to the C program that the setgroups() routine is available
1423 to set the list of process groups.
1425 d_sethent (d_sethent.U):
1426 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1429 d_setitimer (d_setitimer.U):
1430 This variable conditionally defines the HAS_SETITIMER symbol, which
1431 indicates to the C program that the setitimer() routine is available.
1433 d_setlinebuf (d_setlnbuf.U):
1434 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1435 indicates to the C program that the setlinebuf() routine is available
1436 to change stderr or stdout from block-buffered or unbuffered to a
1439 d_setlocale (d_setlocale.U):
1440 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1441 available to handle locale-specific ctype implementations.
1443 d_setnent (d_setnent.U):
1444 This variable conditionally defines HAS_SETNETENT if setnetent() is
1447 d_setpent (d_setpent.U):
1448 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1451 d_setpgid (d_setpgid.U):
1452 This variable conditionally defines the HAS_SETPGID symbol if the
1453 setpgid(pid, gpid) function is available to set process group ID.
1455 d_setpgrp2 (d_setpgrp2.U):
1456 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1457 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1458 is available to set the current process group.
1460 d_setpgrp (d_setpgrp.U):
1461 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1462 available to set the current process group.
1464 d_setprior (d_setprior.U):
1465 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1466 is available to set a process's priority.
1468 d_setproctitle (d_setproctitle.U):
1469 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1470 which indicates to the C program that the setproctitle() routine
1473 d_setpwent (d_setpwent.U):
1474 This variable conditionally defines the HAS_SETPWENT symbol, which
1475 indicates to the C program that the setpwent() routine is available
1476 for initializing sequential access to the passwd database.
1478 d_setregid (d_setregid.U):
1479 This variable conditionally defines HAS_SETREGID if setregid() is
1480 available to change the real and effective gid of the current
1483 d_setresgid (d_setregid.U):
1484 This variable conditionally defines HAS_SETRESGID if setresgid() is
1485 available to change the real, effective and saved gid of the current
1488 d_setresuid (d_setreuid.U):
1489 This variable conditionally defines HAS_SETREUID if setresuid() is
1490 available to change the real, effective and saved uid of the current
1493 d_setreuid (d_setreuid.U):
1494 This variable conditionally defines HAS_SETREUID if setreuid() is
1495 available to change the real and effective uid of the current
1498 d_setrgid (d_setrgid.U):
1499 This variable conditionally defines the HAS_SETRGID symbol, which
1500 indicates to the C program that the setrgid() routine is available
1501 to change the real gid of the current program.
1503 d_setruid (d_setruid.U):
1504 This variable conditionally defines the HAS_SETRUID symbol, which
1505 indicates to the C program that the setruid() routine is available
1506 to change the real uid of the current program.
1508 d_setsent (d_setsent.U):
1509 This variable conditionally defines HAS_SETSERVENT if setservent() is
1512 d_setsid (d_setsid.U):
1513 This variable conditionally defines HAS_SETSID if setsid() is
1514 available to set the process group ID.
1516 d_setvbuf (d_setvbuf.U):
1517 This variable conditionally defines the HAS_SETVBUF symbol, which
1518 indicates to the C program that the setvbuf() routine is available
1519 to change buffering on an open stdio stream.
1522 This variable conditionally defines the USE_SFIO symbol,
1523 and indicates whether sfio is available (and should be used).
1526 This variable conditionally defines the HAS_SHM symbol, which
1527 indicates that the entire shm*(2) library is present.
1529 d_shmat (d_shmat.U):
1530 This variable conditionally defines the HAS_SHMAT symbol, which
1531 indicates to the C program that the shmat() routine is available.
1533 d_shmatprototype (d_shmat.U):
1534 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1535 symbol, which indicates that sys/shm.h has a prototype for
1538 d_shmctl (d_shmctl.U):
1539 This variable conditionally defines the HAS_SHMCTL symbol, which
1540 indicates to the C program that the shmctl() routine is available.
1542 d_shmdt (d_shmdt.U):
1543 This variable conditionally defines the HAS_SHMDT symbol, which
1544 indicates to the C program that the shmdt() routine is available.
1546 d_shmget (d_shmget.U):
1547 This variable conditionally defines the HAS_SHMGET symbol, which
1548 indicates to the C program that the shmget() routine is available.
1550 d_sigaction (d_sigaction.U):
1551 This variable conditionally defines the HAS_SIGACTION symbol, which
1552 indicates that the Vr4 sigaction() routine is available.
1554 d_sigprocmask (d_sigprocmask.U):
1555 This variable conditionally defines HAS_SIGPROCMASK
1556 if sigprocmask() is available to examine or change the signal mask
1557 of the calling process.
1559 d_sigsetjmp (d_sigsetjmp.U):
1560 This variable conditionally defines the HAS_SIGSETJMP symbol,
1561 which indicates that the sigsetjmp() routine is available to
1562 call setjmp() and optionally save the process's signal mask.
1564 d_sockatmark (d_sockatmark.U):
1565 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1566 indicates to the C program that the sockatmark() routine is available.
1568 d_sockatmarkproto (d_sockatmarkproto.U):
1569 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1570 which indicates to the C program that the system provides
1571 a prototype for the sockatmark() function. Otherwise, it is
1572 up to the program to supply one.
1574 d_socket (d_socket.U):
1575 This variable conditionally defines HAS_SOCKET, which indicates
1576 that the BSD socket interface is supported.
1578 d_socklen_t (d_socklen_t.U):
1579 This symbol will be defined if the C compiler supports socklen_t.
1581 d_sockpair (d_socket.U):
1582 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1583 indicates that the BSD socketpair() is supported.
1585 d_socks5_init (d_socks5_init.U):
1586 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1587 indicates to the C program that the socks5_init() routine is available.
1589 d_sqrtl (d_sqrtl.U):
1590 This variable conditionally defines the HAS_SQRTL symbol, which
1591 indicates to the C program that the sqrtl() routine is available.
1593 d_sresgproto (d_sresgproto.U):
1594 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1595 which indicates to the C program that the system provides
1596 a prototype for the setresgid() function. Otherwise, it is
1597 up to the program to supply one.
1599 d_sresuproto (d_sresuproto.U):
1600 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1601 which indicates to the C program that the system provides
1602 a prototype for the setresuid() function. Otherwise, it is
1603 up to the program to supply one.
1605 d_statblks (d_statblks.U):
1606 This variable conditionally defines USE_STAT_BLOCKS
1607 if this system has a stat structure declaring
1608 st_blksize and st_blocks.
1610 d_statfs_f_flags (d_statfs_f_flags.U):
1611 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1612 symbol, which indicates to struct statfs from has f_flags member.
1613 This kind of struct statfs is coming from sys/mount.h (BSD),
1614 not from sys/statfs.h (SYSV).
1616 d_statfs_s (d_statfs_s.U):
1617 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1618 which indicates that the struct statfs is supported.
1620 d_statvfs (d_statvfs.U):
1621 This variable conditionally defines the HAS_STATVFS symbol, which
1622 indicates to the C program that the statvfs() routine is available.
1624 d_stdio_cnt_lval (d_stdstdio.U):
1625 This variable conditionally defines STDIO_CNT_LVALUE if the
1626 FILE_cnt macro can be used as an lvalue.
1628 d_stdio_ptr_lval (d_stdstdio.U):
1629 This variable conditionally defines STDIO_PTR_LVALUE if the
1630 FILE_ptr macro can be used as an lvalue.
1632 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1633 This symbol is defined if using the FILE_ptr macro as an lvalue
1634 to increase the pointer by n leaves File_cnt(fp) unchanged.
1636 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1637 This symbol is defined if using the FILE_ptr macro as an lvalue
1638 to increase the pointer by n has the side effect of decreasing the
1639 value of File_cnt(fp) by n.
1641 d_stdio_stream_array (stdio_streams.U):
1642 This variable tells whether there is an array holding
1645 d_stdiobase (d_stdstdio.U):
1646 This variable conditionally defines USE_STDIO_BASE if this system
1647 has a FILE structure declaring a usable _base field (or equivalent)
1650 d_stdstdio (d_stdstdio.U):
1651 This variable conditionally defines USE_STDIO_PTR if this system
1652 has a FILE structure declaring usable _ptr and _cnt fields (or
1653 equivalent) in stdio.h.
1655 d_strchr (d_strchr.U):
1656 This variable conditionally defines HAS_STRCHR if strchr() and
1657 strrchr() are available for string searching.
1659 d_strcoll (d_strcoll.U):
1660 This variable conditionally defines HAS_STRCOLL if strcoll() is
1661 available to compare strings using collating information.
1663 d_strctcpy (d_strctcpy.U):
1664 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1665 indicates to the C program that this C compiler knows how to copy
1668 d_strerrm (d_strerror.U):
1669 This variable holds what Strerrr is defined as to translate an error
1670 code condition into an error message string. It could be 'strerror'
1671 or a more complex macro emulating strrror with sys_errlist[], or the
1672 "unknown" string when both strerror and sys_errlist are missing.
1674 d_strerror (d_strerror.U):
1675 This variable conditionally defines HAS_STRERROR if strerror() is
1676 available to translate error numbers to strings.
1678 d_strftime (d_strftime.U):
1679 This variable conditionally defines the HAS_STRFTIME symbol, which
1680 indicates to the C program that the strftime() routine is available.
1682 d_strtod (d_strtod.U):
1683 This variable conditionally defines the HAS_STRTOD symbol, which
1684 indicates to the C program that the strtod() routine is available
1685 to provide better numeric string conversion than atof().
1687 d_strtol (d_strtol.U):
1688 This variable conditionally defines the HAS_STRTOL symbol, which
1689 indicates to the C program that the strtol() routine is available
1690 to provide better numeric string conversion than atoi() and friends.
1692 d_strtold (d_strtold.U):
1693 This variable conditionally defines the HAS_STRTOLD symbol, which
1694 indicates to the C program that the strtold() routine is available.
1696 d_strtoll (d_strtoll.U):
1697 This variable conditionally defines the HAS_STRTOLL symbol, which
1698 indicates to the C program that the strtoll() routine is available.
1700 d_strtoq (d_strtoq.U):
1701 This variable conditionally defines the HAS_STRTOQ symbol, which
1702 indicates to the C program that the strtoq() routine is available.
1704 d_strtoul (d_strtoul.U):
1705 This variable conditionally defines the HAS_STRTOUL symbol, which
1706 indicates to the C program that the strtoul() routine is available
1707 to provide conversion of strings to unsigned long.
1709 d_strtoull (d_strtoull.U):
1710 This variable conditionally defines the HAS_STRTOULL symbol, which
1711 indicates to the C program that the strtoull() routine is available.
1713 d_strtouq (d_strtouq.U):
1714 This variable conditionally defines the HAS_STRTOUQ symbol, which
1715 indicates to the C program that the strtouq() routine is available.
1717 d_strxfrm (d_strxfrm.U):
1718 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1719 available to transform strings.
1721 d_suidsafe (d_dosuid.U):
1722 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1723 if setuid scripts can be secure. This test looks in /dev/fd/.
1725 d_symlink (d_symlink.U):
1726 This variable conditionally defines the HAS_SYMLINK symbol, which
1727 indicates to the C program that the symlink() routine is available
1728 to create symbolic links.
1730 d_syscall (d_syscall.U):
1731 This variable conditionally defines HAS_SYSCALL if syscall() is
1732 available call arbitrary system calls.
1734 d_syscallproto (d_syscallproto.U):
1735 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
1736 which indicates to the C program that the system provides
1737 a prototype for the syscall() function. Otherwise, it is
1738 up to the program to supply one.
1740 d_sysconf (d_sysconf.U):
1741 This variable conditionally defines the HAS_SYSCONF symbol, which
1742 indicates to the C program that the sysconf() routine is available
1743 to determine system related limits and options.
1745 d_sysernlst (d_strerror.U):
1746 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1747 is available to translate error numbers to the symbolic name.
1749 d_syserrlst (d_strerror.U):
1750 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1751 available to translate error numbers to strings.
1753 d_system (d_system.U):
1754 This variable conditionally defines HAS_SYSTEM if system() is
1755 available to issue a shell command.
1757 d_tcgetpgrp (d_tcgtpgrp.U):
1758 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1759 indicates to the C program that the tcgetpgrp() routine is available.
1760 to get foreground process group ID.
1762 d_tcsetpgrp (d_tcstpgrp.U):
1763 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1764 indicates to the C program that the tcsetpgrp() routine is available
1765 to set foreground process group ID.
1767 d_telldir (d_readdir.U):
1768 This variable conditionally defines HAS_TELLDIR if telldir() is
1771 d_telldirproto (d_telldirproto.U):
1772 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1773 which indicates to the C program that the system provides
1774 a prototype for the telldir() function. Otherwise, it is
1775 up to the program to supply one.
1778 This variable conditionally defines the HAS_TIME symbol, which indicates
1779 that the time() routine exists. The time() routine is normaly
1780 provided on UNIX systems.
1782 d_times (d_times.U):
1783 This variable conditionally defines the HAS_TIMES symbol, which indicates
1784 that the times() routine exists. The times() routine is normaly
1785 provided on UNIX systems. You may have to include <sys/times.h>.
1787 d_truncate (d_truncate.U):
1788 This variable conditionally defines HAS_TRUNCATE if truncate() is
1789 available to truncate files.
1791 d_tzname (d_tzname.U):
1792 This variable conditionally defines HAS_TZNAME if tzname[] is
1793 available to access timezone names.
1795 d_u32align (d_u32align.U):
1796 This variable tells whether you must access character data
1797 through U32-aligned pointers.
1799 d_ualarm (d_ualarm.U):
1800 This variable conditionally defines the HAS_UALARM symbol, which
1801 indicates to the C program that the ualarm() routine is available.
1803 d_umask (d_umask.U):
1804 This variable conditionally defines the HAS_UMASK symbol, which
1805 indicates to the C program that the umask() routine is available.
1806 to set and get the value of the file creation mask.
1808 d_uname (d_gethname.U):
1809 This variable conditionally defines the HAS_UNAME symbol, which
1810 indicates to the C program that the uname() routine may be
1811 used to derive the host name.
1813 d_union_semun (d_union_semun.U):
1814 This variable conditionally defines HAS_UNION_SEMUN if the
1815 union semun is defined by including <sys/sem.h>.
1817 d_unordered (d_unordered.U):
1818 This variable conditionally defines the HAS_UNORDERED symbol, which
1819 indicates to the C program that the unordered() routine is available.
1821 d_usleep (d_usleep.U):
1822 This variable conditionally defines HAS_USLEEP if usleep() is
1823 available to do high granularity sleeps.
1825 d_usleepproto (d_usleepproto.U):
1826 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
1827 which indicates to the C program that the system provides
1828 a prototype for the usleep() function. Otherwise, it is
1829 up to the program to supply one.
1831 d_ustat (d_ustat.U):
1832 This variable conditionally defines HAS_USTAT if ustat() is
1833 available to query file system statistics by dev_t.
1835 d_vendorarch (vendorarch.U):
1836 This variable conditionally defined PERL_VENDORARCH.
1838 d_vendorbin (vendorbin.U):
1839 This variable conditionally defines PERL_VENDORBIN.
1841 d_vendorlib (vendorlib.U):
1842 This variable conditionally defines PERL_VENDORLIB.
1844 d_vfork (d_vfork.U):
1845 This variable conditionally defines the HAS_VFORK symbol, which
1846 indicates the vfork() routine is available.
1848 d_void_closedir (d_closedir.U):
1849 This variable conditionally defines VOID_CLOSEDIR if closedir()
1850 does not return a value.
1852 d_voidsig (d_voidsig.U):
1853 This variable conditionally defines VOIDSIG if this system
1854 declares "void (*signal(...))()" in signal.h. The old way was to
1855 declare it as "int (*signal(...))()".
1857 d_voidtty (i_sysioctl.U):
1858 This variable conditionally defines USE_IOCNOTTY to indicate that the
1859 ioctl() call with TIOCNOTTY should be used to void tty association.
1860 Otherwise (on USG probably), it is enough to close the standard file
1861 decriptors and do a setpgrp().
1863 d_volatile (d_volatile.U):
1864 This variable conditionally defines the HASVOLATILE symbol, which
1865 indicates to the C program that this C compiler knows about the
1866 volatile declaration.
1868 d_vprintf (d_vprintf.U):
1869 This variable conditionally defines the HAS_VPRINTF symbol, which
1870 indicates to the C program that the vprintf() routine is available
1871 to printf with a pointer to an argument list.
1873 d_wait4 (d_wait4.U):
1874 This variable conditionally defines the HAS_WAIT4 symbol, which
1875 indicates the wait4() routine is available.
1877 d_waitpid (d_waitpid.U):
1878 This variable conditionally defines HAS_WAITPID if waitpid() is
1879 available to wait for child process.
1881 d_wcstombs (d_wcstombs.U):
1882 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1883 indicates to the C program that the wcstombs() routine is available
1884 to convert wide character strings to multibyte strings.
1886 d_wctomb (d_wctomb.U):
1887 This variable conditionally defines the HAS_WCTOMB symbol, which
1888 indicates to the C program that the wctomb() routine is available
1889 to convert a wide character to a multibyte.
1891 d_writev (d_writev.U):
1892 This variable conditionally defines the HAS_WRITEV symbol, which
1893 indicates to the C program that the writev() routine is available.
1896 This variable conditionally defines the symbol XENIX, which alerts
1897 the C program that it runs under Xenix.
1900 This variable is used internally by Configure to determine the
1901 full pathname (if any) of the date program. After Configure runs,
1902 the value is reset to a plain "date" and is not useful.
1904 db_hashtype (i_db.U):
1905 This variable contains the type of the hash structure element
1906 in the <db.h> header file. In older versions of DB, it was
1907 int, while in newer ones it is u_int32_t.
1909 db_prefixtype (i_db.U):
1910 This variable contains the type of the prefix structure element
1911 in the <db.h> header file. In older versions of DB, it was
1912 int, while in newer ones it is size_t.
1914 db_version_major (i_db.U):
1915 This variable contains the major version number of
1916 Berkeley DB found in the <db.h> header file.
1918 db_version_minor (i_db.U):
1919 This variable contains the minor version number of
1920 Berkeley DB found in the <db.h> header file.
1921 For DB version 1 this is always 0.
1923 db_version_patch (i_db.U):
1924 This variable contains the patch version number of
1925 Berkeley DB found in the <db.h> header file.
1926 For DB version 1 this is always 0.
1928 defvoidused (voidflags.U):
1929 This variable contains the default value of the VOIDUSED symbol (15).
1931 direntrytype (i_dirent.U):
1932 This symbol is set to 'struct direct' or 'struct dirent' depending on
1933 whether dirent is available or not. You should use this pseudo type to
1934 portably declare your directory entries.
1937 This variable contains the extension that is to be used for the
1938 dynamically loaded modules that perl generaties.
1941 This variable contains the name of the dynamic loading file that
1942 will be used with the package.
1944 doublesize (doublesize.U):
1945 This variable contains the value of the DOUBLESIZE symbol, which
1946 indicates to the C program how many bytes there are in a double.
1948 drand01 (randfunc.U):
1949 Indicates the macro to be used to generate normalized
1950 random numbers. Uses randfunc, often divided by
1951 (double) (((unsigned long) 1 << randbits)) in order to
1952 normalize the result.
1953 In C programs, the macro 'Drand01' is mapped to drand01.
1955 dynamic_ext (Extensions.U):
1956 This variable holds a list of XS extension files we want to
1957 link dynamically into the package. It is used by Makefile.
1959 eagain (nblock_io.U):
1960 This variable bears the symbolic errno code set by read() when no
1961 data is present on the file and non-blocking I/O was enabled (otherwise,
1962 read() blocks naturally).
1965 This variable conditionally defines EBCDIC if this
1966 system uses EBCDIC encoding. Among other things, this
1967 means that the character ranges are not contiguous.
1971 This variable is used internally by Configure to determine the
1972 full pathname (if any) of the echo program. After Configure runs,
1973 the value is reset to a plain "echo" and is not useful.
1976 This variable is used internally by Configure to determine the
1977 full pathname (if any) of the egrep program. After Configure runs,
1978 the value is reset to a plain "egrep" and is not useful.
1981 This variable is defined but not used by Configure.
1982 The value is a plain '' and is not useful.
1985 When running under Eunice this variable contains a command which will
1986 convert a shell script to the proper form of text file for it to be
1987 executable by the shell. On other systems it is a no-op.
1990 This is an old synonym for _exe.
1993 This variable is used internally by Configure to determine the
1994 full pathname (if any) of the expr program. After Configure runs,
1995 the value is reset to a plain "expr" and is not useful.
1997 extensions (Extensions.U):
1998 This variable holds a list of all extension files (both XS and
1999 non-xs linked into the package. It is propagated to Config.pm
2000 and is typically used to test whether a particular extesion
2004 This variable holds a list of extra modules to install.
2006 fflushall (fflushall.U):
2007 This symbol, if defined, tells that to flush
2008 all pending stdio output one must loop through all
2009 the stdio file handles stored in an array and fflush them.
2010 Note that if fflushNULL is defined, fflushall will not
2011 even be probed for and will be left undefined.
2013 fflushNULL (fflushall.U):
2014 This symbol, if defined, tells that fflush(NULL) does flush
2015 all pending stdio output.
2018 This variable is defined but not used by Configure.
2019 The value is a plain '' and is not useful.
2021 firstmakefile (Unix.U):
2022 This variable defines the first file searched by make. On unix,
2023 it is makefile (then Makefile). On case-insensitive systems,
2024 it might be something else. This is only used to deal with
2025 convoluted make depend tricks.
2028 This variable is defined but not used by Configure.
2029 The value is a plain '' and is not useful.
2031 fpossize (fpossize.U):
2032 This variable contains the size of a fpostype in bytes.
2034 fpostype (fpostype.U):
2035 This variable defines Fpos_t to be something like fpos_t, long,
2036 uint, or whatever type is used to declare file positions in libc.
2038 freetype (mallocsrc.U):
2039 This variable contains the return type of free(). It is usually
2040 void, but occasionally int.
2043 This variable contains the command used by Configure
2044 to copy files from the target host. Useful and available
2045 only during Perl build.
2046 The string ':' if not cross-compiling.
2049 This variable contains the full pathname to 'ar', whether or
2050 not the user has specified 'portability'. This is only used
2054 This variable contains the full pathname to 'csh', whether or
2055 not the user has specified 'portability'. This is only used
2056 in the compiled C program, and we assume that all systems which
2057 can share this executable will have the same full pathname to
2060 full_sed (Loc_sed.U):
2061 This variable contains the full pathname to 'sed', whether or
2062 not the user has specified 'portability'. This is only used
2063 in the compiled C program, and we assume that all systems which
2064 can share this executable will have the same full pathname to
2067 gccosandvers (gccvers.U):
2068 If GNU cc (gcc) is used, this variable the operating system and
2069 version used to compile the gcc. It is set to '' if not gcc,
2070 or if nothing useful can be parsed as the os version.
2072 gccversion (gccvers.U):
2073 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2074 indicate whether the compiler is version 1 or 2. This is used in
2075 setting some of the default cflags. It is set to '' if not gcc.
2078 This variable contains the format string used for printing a Gid_t.
2080 gidsign (gidsign.U):
2081 This variable contains the signedness of a gidtype.
2082 1 for unsigned, -1 for signed.
2084 gidsize (gidsize.U):
2085 This variable contains the size of a gidtype in bytes.
2087 gidtype (gidtype.U):
2088 This variable defines Gid_t to be something like gid_t, int,
2089 ushort, or whatever type is used to declare the return type
2090 of getgid(). Typically, it is the type of group ids in the kernel.
2093 This variable holds the general path (space-separated) used to
2094 find libraries. It may contain directories that do not exist on
2095 this platform, libpth is the cleaned-up version.
2098 This variable is used internally by Configure to determine the
2099 full pathname (if any) of the grep program. After Configure runs,
2100 the value is reset to a plain "grep" and is not useful.
2103 This variable contains a command that produces the text of the
2104 /etc/group file. This is normally "cat /etc/group", but can be
2105 "ypcat group" when NIS is used.
2106 On some systems, such as os390, there may be no equivalent
2107 command, in which case this variable is unset.
2109 groupstype (groupstype.U):
2110 This variable defines Groups_t to be something like gid_t, int,
2111 ushort, or whatever type is used for the second argument to
2112 getgroups() and setgroups(). Usually, this is the same as
2113 gidtype (gid_t), but sometimes it isn't.
2116 This variable is used internally by Configure to determine the
2117 full pathname (if any) of the gzip program. After Configure runs,
2118 the value is reset to a plain "gzip" and is not useful.
2120 h_fcntl (h_fcntl.U):
2121 This is variable gets set in various places to tell i_fcntl that
2122 <fcntl.h> should be included.
2124 h_sysfile (h_sysfile.U):
2125 This is variable gets set in various places to tell i_sys_file that
2126 <sys/file.h> should be included.
2129 Gives the type of hints used for previous answers. May be one of
2130 "default", "recommended" or "previous".
2133 This variable contains a command that produces the text of the
2134 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2135 "ypcat hosts" when NIS is used.
2136 On some systems, such as os390, there may be no equivalent
2137 command, in which case this variable is unset.
2140 This variable is the size of an I16 in bytes.
2143 This variable contains the C type used for Perl's I16.
2146 This variable is the size of an I32 in bytes.
2149 This variable contains the C type used for Perl's I32.
2152 This variable is the size of an I64 in bytes.
2155 This variable contains the C type used for Perl's I64.
2158 This variable is the size of an I8 in bytes.
2161 This variable contains the C type used for Perl's I8.
2163 i_arpainet (i_arpainet.U):
2164 This variable conditionally defines the I_ARPA_INET symbol,
2165 and indicates whether a C program should include <arpa/inet.h>.
2167 i_bsdioctl (i_sysioctl.U):
2168 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2169 indicates to the C program that <sys/bsdioctl.h> exists and should
2173 This variable conditionally defines the I_DB symbol, and indicates
2174 whether a C program may include Berkeley's DB include file <db.h>.
2177 This variable conditionally defines the I_DBM symbol, which
2178 indicates to the C program that <dbm.h> exists and should
2181 i_dirent (i_dirent.U):
2182 This variable conditionally defines I_DIRENT, which indicates
2183 to the C program that it should include <dirent.h>.
2186 This variable conditionally defines the I_DLD symbol, which
2187 indicates to the C program that <dld.h> (GNU dynamic loading)
2188 exists and should be included.
2190 i_dlfcn (i_dlfcn.U):
2191 This variable conditionally defines the I_DLFCN symbol, which
2192 indicates to the C program that <dlfcn.h> exists and should
2195 i_fcntl (i_fcntl.U):
2196 This variable controls the value of I_FCNTL (which tells
2197 the C program to include <fcntl.h>).
2199 i_float (i_float.U):
2200 This variable conditionally defines the I_FLOAT symbol, and indicates
2201 whether a C program may include <float.h> to get symbols like DBL_MAX
2202 or DBL_MIN, i.e. machine dependent floating point values.
2205 This variable conditionally defines the I_FP symbol, and indicates
2206 whether a C program should include <fp.h>.
2208 i_fp_class (i_fp_class.U):
2209 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2210 whether a C program should include <fp_class.h>.
2213 This variable conditionally defines the I_GDBM symbol, which
2214 indicates to the C program that <gdbm.h> exists and should
2218 This variable conditionally defines the I_GRP symbol, and indicates
2219 whether a C program should include <grp.h>.
2221 i_ieeefp (i_ieeefp.U):
2222 This variable conditionally defines the I_IEEEFP symbol, and indicates
2223 whether a C program should include <ieeefp.h>.
2225 i_inttypes (i_inttypes.U):
2226 This variable conditionally defines the I_INTTYPES symbol,
2227 and indicates whether a C program should include <inttypes.h>.
2229 i_langinfo (i_langinfo.U):
2230 This variable conditionally defines the I_LANGINFO symbol,
2231 and indicates whether a C program should include <langinfo.h>.
2233 i_libutil (i_libutil.U):
2234 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2235 whether a C program should include <libutil.h>.
2237 i_limits (i_limits.U):
2238 This variable conditionally defines the I_LIMITS symbol, and indicates
2239 whether a C program may include <limits.h> to get symbols like WORD_BIT
2242 i_locale (i_locale.U):
2243 This variable conditionally defines the I_LOCALE symbol,
2244 and indicates whether a C program should include <locale.h>.
2246 i_machcthr (i_machcthr.U):
2247 This variable conditionally defines the I_MACH_CTHREADS symbol,
2248 and indicates whether a C program should include <mach/cthreads.h>.
2250 i_malloc (i_malloc.U):
2251 This variable conditionally defines the I_MALLOC symbol, and indicates
2252 whether a C program should include <malloc.h>.
2255 This variable conditionally defines the I_MATH symbol, and indicates
2256 whether a C program may include <math.h>.
2258 i_memory (i_memory.U):
2259 This variable conditionally defines the I_MEMORY symbol, and indicates
2260 whether a C program should include <memory.h>.
2262 i_mntent (i_mntent.U):
2263 This variable conditionally defines the I_MNTENT symbol, and indicates
2264 whether a C program should include <mntent.h>.
2267 This variable conditionally defines the I_NDBM symbol, which
2268 indicates to the C program that <ndbm.h> exists and should
2271 i_netdb (i_netdb.U):
2272 This variable conditionally defines the I_NETDB symbol, and indicates
2273 whether a C program should include <netdb.h>.
2275 i_neterrno (i_neterrno.U):
2276 This variable conditionally defines the I_NET_ERRNO symbol, which
2277 indicates to the C program that <net/errno.h> exists and should
2280 i_netinettcp (i_netinettcp.U):
2281 This variable conditionally defines the I_NETINET_TCP symbol,
2282 and indicates whether a C program should include <netinet/tcp.h>.
2285 This variable conditionally defines I_NETINET_IN, which indicates
2286 to the C program that it should include <netinet/in.h>. Otherwise,
2287 you may try <sys/in.h>.
2290 This variable conditionally defines the I_POLL symbol, and indicates
2291 whether a C program should include <poll.h>.
2294 This variable conditionally defines the I_PROT symbol, and indicates
2295 whether a C program should include <prot.h>.
2297 i_pthread (i_pthread.U):
2298 This variable conditionally defines the I_PTHREAD symbol,
2299 and indicates whether a C program should include <pthread.h>.
2302 This variable conditionally defines I_PWD, which indicates
2303 to the C program that it should include <pwd.h>.
2305 i_rpcsvcdbm (i_dbm.U):
2306 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2307 indicates to the C program that <rpcsvc/dbm.h> exists and should
2308 be included. Some System V systems might need this instead of <dbm.h>.
2311 This variable conditionally defines the I_SFIO symbol,
2312 and indicates whether a C program should include <sfio.h>.
2314 i_sgtty (i_termio.U):
2315 This variable conditionally defines the I_SGTTY symbol, which
2316 indicates to the C program that it should include <sgtty.h> rather
2319 i_shadow (i_shadow.U):
2320 This variable conditionally defines the I_SHADOW symbol, and indicates
2321 whether a C program should include <shadow.h>.
2323 i_socks (i_socks.U):
2324 This variable conditionally defines the I_SOCKS symbol, and indicates
2325 whether a C program should include <socks.h>.
2327 i_stdarg (i_varhdr.U):
2328 This variable conditionally defines the I_STDARG symbol, which
2329 indicates to the C program that <stdarg.h> exists and should
2332 i_stddef (i_stddef.U):
2333 This variable conditionally defines the I_STDDEF symbol, which
2334 indicates to the C program that <stddef.h> exists and should
2337 i_stdlib (i_stdlib.U):
2338 This variable conditionally defines the I_STDLIB symbol, which
2339 indicates to the C program that <stdlib.h> exists and should
2342 i_string (i_string.U):
2343 This variable conditionally defines the I_STRING symbol, which
2344 indicates that <string.h> should be included rather than <strings.h>.
2346 i_sunmath (i_sunmath.U):
2347 This variable conditionally defines the I_SUNMATH symbol, and indicates
2348 whether a C program should include <sunmath.h>.
2350 i_sysaccess (i_sysaccess.U):
2351 This variable conditionally defines the I_SYS_ACCESS symbol,
2352 and indicates whether a C program should include <sys/access.h>.
2354 i_sysdir (i_sysdir.U):
2355 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2356 whether a C program should include <sys/dir.h>.
2358 i_sysfile (i_sysfile.U):
2359 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2360 whether a C program should include <sys/file.h> to get R_OK and friends.
2362 i_sysfilio (i_sysioctl.U):
2363 This variable conditionally defines the I_SYS_FILIO symbol, which
2364 indicates to the C program that <sys/filio.h> exists and should
2365 be included in preference to <sys/ioctl.h>.
2368 This variable conditionally defines I_SYS_IN, which indicates
2369 to the C program that it should include <sys/in.h> instead of
2372 i_sysioctl (i_sysioctl.U):
2373 This variable conditionally defines the I_SYS_IOCTL symbol, which
2374 indicates to the C program that <sys/ioctl.h> exists and should
2377 i_syslog (i_syslog.U):
2378 This variable conditionally defines the I_SYSLOG symbol,
2379 and indicates whether a C program should include <syslog.h>.
2381 i_sysmman (i_sysmman.U):
2382 This variable conditionally defines the I_SYS_MMAN symbol, and
2383 indicates whether a C program should include <sys/mman.h>.
2385 i_sysmode (i_sysmode.U):
2386 This variable conditionally defines the I_SYSMODE symbol,
2387 and indicates whether a C program should include <sys/mode.h>.
2389 i_sysmount (i_sysmount.U):
2390 This variable conditionally defines the I_SYSMOUNT symbol,
2391 and indicates whether a C program should include <sys/mount.h>.
2393 i_sysndir (i_sysndir.U):
2394 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2395 whether a C program should include <sys/ndir.h>.
2397 i_sysparam (i_sysparam.U):
2398 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2399 whether a C program should include <sys/param.h>.
2401 i_sysresrc (i_sysresrc.U):
2402 This variable conditionally defines the I_SYS_RESOURCE symbol,
2403 and indicates whether a C program should include <sys/resource.h>.
2405 i_syssecrt (i_syssecrt.U):
2406 This variable conditionally defines the I_SYS_SECURITY symbol,
2407 and indicates whether a C program should include <sys/security.h>.
2409 i_sysselct (i_sysselct.U):
2410 This variable conditionally defines I_SYS_SELECT, which indicates
2411 to the C program that it should include <sys/select.h> in order to
2412 get the definition of struct timeval.
2414 i_syssockio (i_sysioctl.U):
2415 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2416 C program that socket ioctl codes may be found in <sys/sockio.h>
2417 instead of <sys/ioctl.h>.
2419 i_sysstat (i_sysstat.U):
2420 This variable conditionally defines the I_SYS_STAT symbol,
2421 and indicates whether a C program should include <sys/stat.h>.
2423 i_sysstatfs (i_sysstatfs.U):
2424 This variable conditionally defines the I_SYSSTATFS symbol,
2425 and indicates whether a C program should include <sys/statfs.h>.
2427 i_sysstatvfs (i_sysstatvfs.U):
2428 This variable conditionally defines the I_SYSSTATVFS symbol,
2429 and indicates whether a C program should include <sys/statvfs.h>.
2431 i_systime (i_time.U):
2432 This variable conditionally defines I_SYS_TIME, which indicates
2433 to the C program that it should include <sys/time.h>.
2435 i_systimek (i_time.U):
2436 This variable conditionally defines I_SYS_TIME_KERNEL, which
2437 indicates to the C program that it should include <sys/time.h>
2438 with KERNEL defined.
2440 i_systimes (i_systimes.U):
2441 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2442 whether a C program should include <sys/times.h>.
2444 i_systypes (i_systypes.U):
2445 This variable conditionally defines the I_SYS_TYPES symbol,
2446 and indicates whether a C program should include <sys/types.h>.
2448 i_sysuio (i_sysuio.U):
2449 This variable conditionally defines the I_SYSUIO symbol, and indicates
2450 whether a C program should include <sys/uio.h>.
2452 i_sysun (i_sysun.U):
2453 This variable conditionally defines I_SYS_UN, which indicates
2454 to the C program that it should include <sys/un.h> to get UNIX
2455 domain socket definitions.
2457 i_sysutsname (i_sysutsname.U):
2458 This variable conditionally defines the I_SYSUTSNAME symbol,
2459 and indicates whether a C program should include <sys/utsname.h>.
2461 i_sysvfs (i_sysvfs.U):
2462 This variable conditionally defines the I_SYSVFS symbol,
2463 and indicates whether a C program should include <sys/vfs.h>.
2465 i_syswait (i_syswait.U):
2466 This variable conditionally defines I_SYS_WAIT, which indicates
2467 to the C program that it should include <sys/wait.h>.
2469 i_termio (i_termio.U):
2470 This variable conditionally defines the I_TERMIO symbol, which
2471 indicates to the C program that it should include <termio.h> rather
2474 i_termios (i_termio.U):
2475 This variable conditionally defines the I_TERMIOS symbol, which
2476 indicates to the C program that the POSIX <termios.h> file is
2480 This variable conditionally defines I_TIME, which indicates
2481 to the C program that it should include <time.h>.
2483 i_unistd (i_unistd.U):
2484 This variable conditionally defines the I_UNISTD symbol, and indicates
2485 whether a C program should include <unistd.h>.
2487 i_ustat (i_ustat.U):
2488 This variable conditionally defines the I_USTAT symbol, and indicates
2489 whether a C program should include <ustat.h>.
2491 i_utime (i_utime.U):
2492 This variable conditionally defines the I_UTIME symbol, and indicates
2493 whether a C program should include <utime.h>.
2495 i_values (i_values.U):
2496 This variable conditionally defines the I_VALUES symbol, and indicates
2497 whether a C program may include <values.h> to get symbols like MAXLONG
2500 i_varargs (i_varhdr.U):
2501 This variable conditionally defines I_VARARGS, which indicates
2502 to the C program that it should include <varargs.h>.
2504 i_varhdr (i_varhdr.U):
2505 Contains the name of the header to be included to get va_dcl definition.
2506 Typically one of varargs.h or stdarg.h.
2508 i_vfork (i_vfork.U):
2509 This variable conditionally defines the I_VFORK symbol, and indicates
2510 whether a C program should include vfork.h.
2512 ignore_versioned_solibs (libs.U):
2513 This variable should be non-empty if non-versioned shared
2514 libraries (libfoo.so.x.y) are to be ignored (because they
2515 cannot be linked against).
2517 inc_version_list (inc_version_list.U):
2518 This variable specifies the list of subdirectories in over
2519 which perl.c:incpush() and lib/lib.pm will automatically
2520 search when adding directories to @INC. The elements in
2521 the list are separated by spaces. This is only useful
2522 if you have a perl library directory tree structured like the
2523 default one. See INSTALL for how this works. The versioned
2524 site_perl directory was introduced in 5.005, so that is the
2525 lowest possible value.
2527 inc_version_list_init (inc_version_list.U):
2528 This variable holds the same list as inc_version_list, but
2529 each item is enclosed in double quotes and separated by commas,
2530 suitable for use in the PERL_INC_VERSION_LIST initialization.
2533 This variable must preceed the normal include path to get hte
2534 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2535 Value can be "" or "/bsd43" on mips.
2538 This variable is defined but not used by Configure.
2539 The value is a plain '' and is not useful.
2541 installarchlib (archlib.U):
2542 This variable is really the same as archlibexp but may differ on
2543 those systems using AFS. For extra portability, only this variable
2544 should be used in makefiles.
2547 This variable is the same as binexp unless AFS is running in which case
2548 the user is explicitely prompted for it. This variable should always
2549 be used in your makefiles for maximum portability.
2551 installman1dir (man1dir.U):
2552 This variable is really the same as man1direxp, unless you are using
2553 AFS in which case it points to the read/write location whereas
2554 man1direxp only points to the read-only access location. For extra
2555 portability, you should only use this variable within your makefiles.
2557 installman3dir (man3dir.U):
2558 This variable is really the same as man3direxp, unless you are using
2559 AFS in which case it points to the read/write location whereas
2560 man3direxp only points to the read-only access location. For extra
2561 portability, you should only use this variable within your makefiles.
2563 installprefix (installprefix.U):
2564 This variable holds the name of the directory below which
2565 "make install" will install the package. For most users, this
2566 is the same as prefix. However, it is useful for
2567 installing the software into a different (usually temporary)
2568 location after which it can be bundled up and moved somehow
2569 to the final location specified by prefix.
2571 installprefixexp (installprefix.U):
2572 This variable holds the full absolute path of installprefix
2573 with all ~-expansion done.
2575 installprivlib (privlib.U):
2576 This variable is really the same as privlibexp but may differ on
2577 those systems using AFS. For extra portability, only this variable
2578 should be used in makefiles.
2580 installscript (scriptdir.U):
2581 This variable is usually the same as scriptdirexp, unless you are on
2582 a system running AFS, in which case they may differ slightly. You
2583 should always use this variable within your makefiles for portability.
2585 installsitearch (sitearch.U):
2586 This variable is really the same as sitearchexp but may differ on
2587 those systems using AFS. For extra portability, only this variable
2588 should be used in makefiles.
2590 installsitebin (sitebin.U):
2591 This variable is usually the same as sitebinexp, unless you are on
2592 a system running AFS, in which case they may differ slightly. You
2593 should always use this variable within your makefiles for portability.
2595 installsitelib (sitelib.U):
2596 This variable is really the same as sitelibexp but may differ on
2597 those systems using AFS. For extra portability, only this variable
2598 should be used in makefiles.
2600 installstyle (installstyle.U):
2601 This variable describes the "style" of the perl installation.
2602 This is intended to be useful for tools that need to
2603 manipulate entire perl distributions. Perl itself doesn't use
2604 this to find its libraries -- the library directories are
2605 stored directly in Config.pm. Currently, there are only two
2606 styles: "lib" and "lib/perl5". The default library locations
2607 (e.g. privlib, sitelib) are either $prefix/lib or
2608 $prefix/lib/perl5. The former is useful if $prefix is a
2609 directory dedicated to perl (e.g. /opt/perl), while the latter
2610 is useful if $prefix is shared by many packages, e.g. if
2612 This may later be extended to include other information, so
2613 be careful with pattern-matching on the results.
2614 For compatibility with perl5.005 and earlier, the default
2615 setting is based on whether or not $prefix contains the string
2618 installusrbinperl (instubperl.U):
2619 This variable tells whether Perl should be installed also as
2620 /usr/bin/perl in addition to
2623 installvendorarch (vendorarch.U):
2624 This variable is really the same as vendorarchexp but may differ on
2625 those systems using AFS. For extra portability, only this variable
2626 should be used in makefiles.
2628 installvendorbin (vendorbin.U):
2629 This variable is really the same as vendorbinexp but may differ on
2630 those systems using AFS. For extra portability, only this variable
2631 should be used in makefiles.
2633 installvendorlib (vendorlib.U):
2634 This variable is really the same as vendorlibexp but may differ on
2635 those systems using AFS. For extra portability, only this variable
2636 should be used in makefiles.
2638 intsize (intsize.U):
2639 This variable contains the value of the INTSIZE symbol, which
2640 indicates to the C program how many bytes there are in an int.
2642 issymlink (issymlink.U):
2643 This variable holds the test command to test for a symbolic link
2644 (if they are supported). Typical values include 'test -h' and
2647 ivdformat (perlxvf.U):
2648 This variable contains the format string used for printing
2649 a Perl IV as a signed decimal integer.
2652 This variable is the size of an IV in bytes.
2655 This variable contains the C type used for Perl's IV.
2657 known_extensions (Extensions.U):
2658 This variable holds a list of all XS extensions included in
2662 This variable is defined but not used by Configure.
2663 The value is a plain '' and is not useful.
2666 This variable indicates the program to be used to link
2667 libraries for dynamic loading. On some systems, it is 'ld'.
2668 On ELF systems, it should be $cc. Mostly, we'll try to respect
2669 the hint file setting.
2671 lddlflags (dlsrc.U):
2672 This variable contains any special flags that might need to be
2673 passed to $ld to create a shared library suitable for dynamic
2674 loading. It is up to the makefile to use it. For hpux, it
2675 should be '-b'. For sunos 4.1, it is empty.
2677 ldflags (ccflags.U):
2678 This variable contains any additional C loader flags desired by
2679 the user. It is up to the Makefile to use this.
2681 ldflags_uselargefiles (uselfs.U):
2682 This variable contains the loader flags needed by large file builds
2683 and added to ldflags by hints files.
2685 ldlibpthname (libperl.U):
2686 This variable holds the name of the shared library
2687 search path, often LD_LIBRARY_PATH. To get an empty
2688 string, the hints file must set this to 'none'.
2691 This variable is used internally by Configure to determine the
2692 full pathname (if any) of the less program. After Configure runs,
2693 the value is reset to a plain "less" and is not useful.
2696 This is an old synonym for _a.
2699 This variable contains the location of the C library.
2701 libperl (libperl.U):
2702 The perl executable is obtained by linking perlmain.c with
2703 libperl, any static extensions (usually just DynaLoader),
2704 and any other libraries needed on this system. libperl
2705 is usually libperl.a, but can also be libperl.so.xxx if
2706 the user wishes to build a perl executable with a shared
2710 This variable holds the general path (space-separated) used to find
2711 libraries. It is intended to be used by other units.
2714 This variable holds the additional libraries we want to use.
2715 It is up to the Makefile to deal with it.
2718 This variable holds the directory names aka dirnames of the libraries
2719 we found and accepted, duplicates are removed.
2722 This variable holds the filenames aka basenames of the libraries
2723 we found and accepted.
2726 This variable holds the full pathnames of the libraries
2727 we found and accepted.
2730 This variable holds the directory names probed for libraries.
2732 libswanted (Myinit.U):
2733 This variable holds a list of all the libraries we want to
2734 search. The order is chosen to pick up the c library
2735 ahead of ucb or bsd libraries for SVR4.
2737 libswanted_uselargefiles (uselfs.U):
2738 This variable contains the libraries needed by large file builds
2739 and added to ldflags by hints files. It is a space separated list
2740 of the library names without the "lib" prefix or any suffix, just
2744 This variable is defined but not used by Configure.
2745 The value is a plain '' and is not useful.
2748 This variable is defined but not used by Configure.
2749 The value is a plain '' and is not useful.
2751 lkflags (ccflags.U):
2752 This variable contains any additional C partial linker flags desired by
2753 the user. It is up to the Makefile to use this.
2756 This variable is used internally by Configure to determine the
2757 full pathname (if any) of the ln program. After Configure runs,
2758 the value is reset to a plain "ln" and is not useful.
2761 This variable holds the name of the command to make
2762 symbolic links (if they are supported). It can be used
2763 in the Makefile. It is either 'ln -s' or 'ln'
2765 locincpth (ccflags.U):
2766 This variable contains a list of additional directories to be
2767 searched by the compiler. The appropriate '-I' directives will
2768 be added to ccflags. This is intended to simplify setting
2769 local directories from the Configure command line.
2770 It's not much, but it parallels the loclibpth stuff in libpth.U.
2772 loclibpth (libpth.U):
2773 This variable holds the paths (space-separated) used to find local
2774 libraries. It is prepended to libpth, and is intended to be easily
2775 set from the command line.
2777 longdblsize (d_longdbl.U):
2778 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2779 indicates to the C program how many bytes there are in a long double,
2780 if this system supports long doubles.
2782 longlongsize (d_longlong.U):
2783 This variable contains the value of the LONGLONGSIZE symbol, which
2784 indicates to the C program how many bytes there are in a long long,
2785 if this system supports long long.
2787 longsize (intsize.U):
2788 This variable contains the value of the LONGSIZE symbol, which
2789 indicates to the C program how many bytes there are in a long.
2792 This variable is defined but not used by Configure.
2793 The value is a plain '' and is not useful.
2796 This variable is defined but not used by Configure.
2797 The value is a plain '' and is not useful.
2800 This variable is used internally by Configure to determine the
2801 full pathname (if any) of the ls program. After Configure runs,
2802 the value is reset to a plain "ls" and is not useful.
2804 lseeksize (lseektype.U):
2805 This variable defines lseektype to be something like off_t, long,
2806 or whatever type is used to declare lseek offset's type in the
2807 kernel (which also appears to be lseek's return type).
2809 lseektype (lseektype.U):
2810 This variable defines lseektype to be something like off_t, long,
2811 or whatever type is used to declare lseek offset's type in the
2812 kernel (which also appears to be lseek's return type).
2815 This variable is defined but not used by Configure.
2816 The value is a plain '' and is not useful.
2819 This variable is defined but not used by Configure.
2820 The value is a plain '' and is not useful.
2823 This variable is used internally by Configure to determine the
2824 full pathname (if any) of the make program. After Configure runs,
2825 the value is reset to a plain "make" and is not useful.
2827 make_set_make (make.U):
2828 Some versions of 'make' set the variable MAKE. Others do not.
2829 This variable contains the string to be included in Makefile.SH
2830 so that MAKE is set if needed, and not if not needed.
2831 Possible values are:
2832 make_set_make='#' # If your make program handles this for you,
2833 make_set_make="MAKE=$make" # if it doesn't.
2834 I used a comment character so that we can distinguish a
2835 'set' value (from a previous config.sh or Configure '-D' option)
2836 from an uncomputed value.
2838 mallocobj (mallocsrc.U):
2839 This variable contains the name of the malloc.o that this package
2840 generates, if that malloc.o is preferred over the system malloc.
2841 Otherwise the value is null. This variable is intended for generating
2842 Makefiles. See mallocsrc.
2844 mallocsrc (mallocsrc.U):
2845 This variable contains the name of the malloc.c that comes with
2846 the package, if that malloc.c is preferred over the system malloc.
2847 Otherwise the value is null. This variable is intended for generating
2850 malloctype (mallocsrc.U):
2851 This variable contains the kind of ptr returned by malloc and realloc.
2853 man1dir (man1dir.U):
2854 This variable contains the name of the directory in which manual
2855 source pages are to be put. It is the responsibility of the
2856 Makefile.SH to get the value of this into the proper command.
2857 You must be prepared to do the ~name expansion yourself.
2859 man1direxp (man1dir.U):
2860 This variable is the same as the man1dir variable, but is filename
2861 expanded at configuration time, for convenient use in makefiles.
2863 man1ext (man1dir.U):
2864 This variable contains the extension that the manual page should
2865 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2868 man3dir (man3dir.U):
2869 This variable contains the name of the directory in which manual
2870 source pages are to be put. It is the responsibility of the
2871 Makefile.SH to get the value of this into the proper command.
2872 You must be prepared to do the ~name expansion yourself.
2874 man3direxp (man3dir.U):
2875 This variable is the same as the man3dir variable, but is filename
2876 expanded at configuration time, for convenient use in makefiles.
2878 man3ext (man3dir.U):
2879 This variable contains the extension that the manual page should
2880 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2884 This variable is used internally by Configure to determine the
2885 full pathname (if any) of the Mcc program. After Configure runs,
2886 the value is reset to a plain "Mcc" and is not useful.
2888 mips_type (usrinc.U):
2889 This variable holds the environment type for the mips system.
2890 Possible values are "BSD 4.3" and "System V".
2893 This variable is used internally by Configure to determine the
2894 full pathname (if any) of the mkdir program. After Configure runs,
2895 the value is reset to a plain "mkdir" and is not useful.
2897 mmaptype (d_mmap.U):
2898 This symbol contains the type of pointer returned by mmap()
2899 (and simultaneously the type of the first argument).
2900 It can be 'void *' or 'caddr_t'.
2902 modetype (modetype.U):
2903 This variable defines modetype to be something like mode_t,
2904 int, unsigned short, or whatever type is used to declare file
2905 modes for system calls.
2908 This variable is used internally by Configure to determine the
2909 full pathname (if any) of the more program. After Configure runs,
2910 the value is reset to a plain "more" and is not useful.
2912 multiarch (multiarch.U):
2913 This variable conditionally defines the MULTIARCH symbol
2914 which signifies the presence of multiplatform files.
2915 This is normally set by hints files.
2918 This variable is defined but not used by Configure.
2919 The value is a plain '' and is not useful.
2921 myarchname (archname.U):
2922 This variable holds the architecture name computed by Configure in
2923 a previous run. It is not intended to be perused by any user and
2924 should never be set in a hint file.
2926 mydomain (myhostname.U):
2927 This variable contains the eventual value of the MYDOMAIN symbol,
2928 which is the domain of the host the program is going to run on.
2929 The domain must be appended to myhostname to form a complete host name.
2930 The dot comes with mydomain, and need not be supplied by the program.
2932 myhostname (myhostname.U):
2933 This variable contains the eventual value of the MYHOSTNAME symbol,
2934 which is the name of the host the program is going to run on.
2935 The domain is not kept with hostname, but must be gotten from mydomain.
2936 The dot comes with mydomain, and need not be supplied by the program.
2938 myuname (Oldconfig.U):
2939 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2940 pseudo variables assignments in the output are stripped, thank you. The
2941 whole thing is then lower-cased.
2944 This variable contains the '-n' flag if that is what causes the echo
2945 command to suppress newline. Otherwise it is null. Correct usage is
2946 $echo $n "prompt for a question: $c".
2948 need_va_copy (need_va_copy.U):
2949 This symbol, if defined, indicates that the system stores
2950 the variable argument list datatype, va_list, in a format
2951 that cannot be copied by simple assignment, so that some
2952 other means must be used when copying is required.
2953 As such systems vary in their provision (or non-provision)
2954 of copying mechanisms, handy.h defines a platform-
2955 independent macro, Perl_va_copy(src, dst), to do the job.
2957 netdb_hlen_type (netdbtype.U):
2958 This variable holds the type used for the 2nd argument to
2959 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2960 This is only useful if you have gethostbyaddr(), naturally.
2962 netdb_host_type (netdbtype.U):
2963 This variable holds the type used for the 1st argument to
2964 gethostbyaddr(). Usually, this is char * or void *, possibly
2965 with or without a const prefix.
2966 This is only useful if you have gethostbyaddr(), naturally.
2968 netdb_name_type (netdbtype.U):
2969 This variable holds the type used for the argument to
2970 gethostbyname(). Usually, this is char * or const char *.
2971 This is only useful if you have gethostbyname(), naturally.
2973 netdb_net_type (netdbtype.U):
2974 This variable holds the type used for the 1st argument to
2975 getnetbyaddr(). Usually, this is int or long.
2976 This is only useful if you have getnetbyaddr(), naturally.
2979 This variable is used internally by Configure to determine the
2980 full pathname (if any) of the nm program. After Configure runs,
2981 the value is reset to a plain "nm" and is not useful.
2984 This variable holds the options that may be necessary for nm.
2986 nm_so_opt (usenm.U):
2987 This variable holds the options that may be necessary for nm
2988 to work on a shared library but that can not be used on an
2989 archive library. Currently, this is only used by Linux, where
2990 nm --dynamic is *required* to get symbols from an ELF library which
2991 has been stripped, but nm --dynamic is *fatal* on an archive library.
2992 Maybe Linux should just always set usenm=false.
2994 nonxs_ext (Extensions.U):
2995 This variable holds a list of all non-xs extensions included
2996 in the package. All of them will be built.
2999 This variable is used internally by Configure to determine the
3000 full pathname (if any) of the nroff program. After Configure runs,
3001 the value is reset to a plain "nroff" and is not useful.
3003 nveformat (perlxvf.U):
3004 This variable contains the format string used for printing
3005 a Perl NV using %e-ish floating point format.
3007 nvEUformat (perlxvf.U):
3008 This variable contains the format string used for printing
3009 a Perl NV using %E-ish floating point format.
3011 nvfformat (perlxvf.U):
3012 This variable confains the format string used for printing
3013 a Perl NV using %f-ish floating point format.
3015 nvFUformat (perlxvf.U):
3016 This variable confains the format string used for printing
3017 a Perl NV using %F-ish floating point format.
3019 nvgformat (perlxvf.U):
3020 This variable contains the format string used for printing
3021 a Perl NV using %g-ish floating point format.
3023 nvGUformat (perlxvf.U):
3024 This variable contains the format string used for printing
3025 a Perl NV using %G-ish floating point format.
3028 This variable is the size of an NV in bytes.
3031 This variable contains the C type used for Perl's NV.
3033 o_nonblock (nblock_io.U):
3034 This variable bears the symbol value to be used during open() or fcntl()
3035 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3036 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3037 but that is only supported by some devices.
3040 This is an old synonym for _o.
3042 old_pthread_create_joinable (d_pthrattrj.U):
3043 This variable defines the constant to use for creating joinable
3044 (aka undetached) pthreads. Unused if pthread.h defines
3045 PTHREAD_CREATE_JOINABLE. If used, possible values are
3046 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3048 optimize (ccflags.U):
3049 This variable contains any optimizer/debugger flag that should be used.
3050 It is up to the Makefile to use it.
3052 orderlib (orderlib.U):
3053 This variable is "true" if the components of libraries must be ordered
3054 (with `lorder $* | tsort`) before placing them in an archive. Set to
3055 "false" if ranlib or ar can generate random libraries.
3057 osname (Oldconfig.U):
3058 This variable contains the operating system name (e.g. sunos,
3059 solaris, hpux, etc.). It can be useful later on for setting
3060 defaults. Any spaces are replaced with underscores. It is set
3061 to a null string if we can't figure it out.
3063 osvers (Oldconfig.U):
3064 This variable contains the operating system version (e.g.
3065 4.1.3, 5.2, etc.). It is primarily used for helping select
3066 an appropriate hints file, but might be useful elsewhere for
3067 setting defaults. It is set to '' if we can't figure it out.
3068 We try to be flexible about how much of the version number
3069 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3070 same for this package, hints files might just be os_4.0 or
3071 os_4.1, etc., not keeping separate files for each little release.
3073 otherlibdirs (otherlibdirs.U):
3074 This variable contains a colon-separated set of paths for the perl
3075 binary to search for additional library files or modules.
3076 These directories will be tacked to the end of @INC.
3077 Perl will automatically search below each path for version-
3078 and architecture-specific directories. See inc_version_list
3080 A value of ' ' means 'none' and is used to preserve this value
3081 for the next run through Configure.
3083 package (package.U):
3084 This variable contains the name of the package being constructed.
3085 It is primarily intended for the use of later Configure units.
3088 This variable contains the name of the preferred pager on the system.
3089 Usual values are (the full pathnames of) more, less, pg, or cat.
3092 This variable contains a command that produces the text of the
3093 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3094 "ypcat passwd" when NIS is used.
3095 On some systems, such as os390, there may be no equivalent
3096 command, in which case this variable is unset.
3098 patchlevel (patchlevel.U):
3099 The patchlevel level of this package.
3100 The value of patchlevel comes from the patchlevel.h file.
3101 In a version number such as 5.6.1, this is the "6".
3102 In patchlevel.h, this is referred to as "PERL_VERSION".
3105 This is an old synonym for p_ in Head.U, the character
3106 used to separate elements in the command shell search PATH.
3109 This variable contains the full path (if any) to a previously
3110 installed perl5.005 or later suitable for running the script
3111 to determine inc_version_list.
3114 This variable is defined but not used by Configure.
3115 The value is a plain '' and is not useful.
3117 perl_patchlevel (patchlevel.U):
3118 This is the Perl patch level, a numeric change identifier,
3119 as defined by whichever source code maintenance system
3120 is used to maintain the patches; currently Perforce.
3121 It does not correlate with the Perl version numbers or
3122 the maintenance versus development dichotomy except
3123 by also being increasing.
3125 PERL_REVISION (Oldsyms.U):
3126 In a Perl version number such as 5.6.2, this is the 5.
3127 This value is manually set in patchlevel.h
3129 PERL_SUBVERSION (Oldsyms.U):
3130 In a Perl version number such as 5.6.2, this is the 2.
3131 Values greater than 50 represent potentially unstable
3132 development subversions.
3133 This value is manually set in patchlevel.h
3135 PERL_VERSION (Oldsyms.U):
3136 In a Perl version number such as 5.6.2, this is the 6.
3137 This value is manually set in patchlevel.h
3139 perladmin (perladmin.U):
3140 Electronic mail address of the perl5 administrator.
3143 The list of libraries needed by Perl only (any libraries needed
3144 by extensions only will by dropped, if using dynamic loading).
3146 perlpath (perlpath.U):
3147 This variable contains the eventual value of the PERLPATH symbol,
3148 which contains the name of the perl interpreter to be used in
3149 shell scripts and in the "eval 'exec'" idiom.
3152 This variable is used internally by Configure to determine the
3153 full pathname (if any) of the pg program. After Configure runs,
3154 the value is reset to a plain "pg" and is not useful.
3156 phostname (myhostname.U):
3157 This variable contains the eventual value of the PHOSTNAME symbol,
3158 which is a command that can be fed to popen() to get the host name.
3159 The program should probably not presume that the domain is or isn't
3162 pidtype (pidtype.U):
3163 This variable defines PIDTYPE to be something like pid_t, int,
3164 ushort, or whatever type is used to declare process ids in the kernel.
3167 Holds the private path used by Configure to find out the libraries.
3168 Its value is prepend to libpth. This variable takes care of special
3169 machines, like the mips. Usually, it should be empty.
3171 pm_apiversion (xs_apiversion.U):
3172 This variable contains the version of the oldest perl
3173 compatible with the present perl. (That is, pure perl modules
3174 written for $pm_apiversion will still work for the current
3175 version). perl.c:incpush() and lib/lib.pm will automatically
3176 search in $sitelib for older directories across major versions
3177 back to pm_apiversion. This is only useful if you have a perl
3178 library directory tree structured like the default one. The
3179 versioned site_perl library was introduced in 5.005, so that's
3180 the default setting for this variable. It's hard to imagine
3181 it changing before Perl6. It is included here for symmetry
3182 with xs_apiveprsion -- the searching algorithms will
3183 (presumably) be similar.
3184 See the INSTALL file for how this works.
3187 This variable is defined but not used by Configure.
3188 The value is a plain '' and is not useful.
3191 This variable is defined but not used by Configure.
3192 The value is a plain '' and is not useful.
3195 This variable holds the name of the directory below which the
3196 user will install the package. Usually, this is /usr/local, and
3197 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3198 man pages in /usr/local/man, etc. It is only used to set defaults
3199 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3201 prefixexp (prefix.U):
3202 This variable holds the full absolute path of the directory below
3203 which the user will install the package. Derived from prefix.
3205 privlib (privlib.U):
3206 This variable contains the eventual value of the PRIVLIB symbol,
3207 which is the name of the private library for this package. It may
3208 have a ~ on the front. It is up to the makefile to eventually create
3209 this directory while performing installation (with ~ substitution).
3211 privlibexp (privlib.U):
3212 This variable is the ~name expanded version of privlib, so that you
3213 may use it directly in Makefiles or shell scripts.
3215 procselfexe (d_procselfexe.U):
3216 If d_procselfexe is defined, $procselfexe is the filename
3217 of the symbolic link pointing to the absolute pathname of
3218 the executing program.
3220 prototype (prototype.U):
3221 This variable holds the eventual value of CAN_PROTOTYPE, which
3222 indicates the C compiler can handle funciton prototypes.
3224 ptrsize (ptrsize.U):
3225 This variable contains the value of the PTRSIZE symbol, which
3226 indicates to the C program how many bytes there are in a pointer.
3228 quadkind (quadtype.U):
3229 This variable, if defined, encodes the type of a quad:
3230 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3232 quadtype (quadtype.U):
3233 This variable defines Quad_t to be something like long, int,
3234 long long, int64_t, or whatever type is used for 64-bit integers.
3236 randbits (randfunc.U):
3237 Indicates how many bits are produced by the function used to
3238 generate normalized random numbers.
3240 randfunc (randfunc.U):
3241 Indicates the name of the random number function to use.
3242 Values include drand48, random, and rand. In C programs,
3243 the 'Drand01' macro is defined to generate uniformly distributed
3244 random numbers over the range [0., 1.[ (see drand01 and nrand).
3246 randseedtype (randfunc.U):
3247 Indicates the type of the argument of the seedfunc.
3249 ranlib (orderlib.U):
3250 This variable is set to the pathname of the ranlib program, if it is
3251 needed to generate random libraries. Set to ":" if ar can generate
3252 random libraries or if random libraries are not supported
3254 rd_nodata (nblock_io.U):
3255 This variable holds the return code from read() when no data is
3256 present. It should be -1, but some systems return 0 when O_NDELAY is
3257 used, which is a shame because you cannot make the difference between
3258 no data and an EOF.. Sigh!
3260 revision (patchlevel.U):
3261 The value of revision comes from the patchlevel.h file.
3262 In a version number such as 5.6.1, this is the "5".
3263 In patchlevel.h, this is referred to as "PERL_REVISION".
3266 This variable is used internally by Configure to determine the
3267 full pathname (if any) of the rm program. After Configure runs,
3268 the value is reset to a plain "rm" and is not useful.
3271 This variable is defined but not used by Configure.
3272 The value is a plain '' and is not useful.
3275 This variable contains the command used by Configure
3276 to copy and execute a cross-compiled executable in the
3277 target host. Useful and available only during Perl build.
3278 Empty string '' if not cross-compiling.
3281 This variable contains 'true' or 'false' depending whether the
3282 nm extraction should be performed or not, according to the value
3283 of usenm and the flags on the Configure command line.
3285 sched_yield (d_pthread_y.U):
3286 This variable defines the way to yield the execution
3287 of the current thread.
3289 scriptdir (scriptdir.U):
3290 This variable holds the name of the directory in which the user wants
3291 to put publicly scripts for the package in question. It is either
3292 the same directory as for binaries, or a special one that can be
3293 mounted across different architectures, like /usr/share. Programs
3294 must be prepared to deal with ~name expansion.
3296 scriptdirexp (scriptdir.U):
3297 This variable is the same as scriptdir, but is filename expanded
3298 at configuration time, for programs not wanting to bother with it.
3301 This variable is used internally by Configure to determine the
3302 full pathname (if any) of the sed program. After Configure runs,
3303 the value is reset to a plain "sed" and is not useful.
3305 seedfunc (randfunc.U):
3306 Indicates the random number generating seed function.
3307 Values include srand48, srandom, and srand.
3309 selectminbits (selectminbits.U):
3310 This variable holds the minimum number of bits operated by select.
3311 That is, if you do select(n, ...), how many bits at least will be
3312 cleared in the masks if some activity is detected. Usually this
3313 is either n or 32*ceil(n/32), especially many little-endians do
3314 the latter. This is only useful if you have select(), naturally.
3316 selecttype (selecttype.U):
3317 This variable holds the type used for the 2nd, 3rd, and 4th
3318 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3319 is defined, and 'int *' otherwise. This is only useful if you
3320 have select(), naturally.
3323 This variable is defined but not used by Configure.
3324 The value is a plain '' and is not useful.
3327 This variable contains the full pathname of the shell used
3328 on this system to execute Bourne shell scripts. Usually, this will be
3329 /bin/sh, though it's possible that some systems will have /bin/ksh,
3330 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3332 This unit comes before Options.U, so you can't set sh with a '-D'
3333 option, though you can override this (and startsh)
3334 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3337 This variable is defined but not used by Configure.
3338 The value is a plain '' and is not useful.
3340 sharpbang (spitshell.U):
3341 This variable contains the string #! if this system supports that
3344 shmattype (d_shmat.U):
3345 This symbol contains the type of pointer returned by shmat().
3346 It can be 'void *' or 'char *'.
3348 shortsize (intsize.U):
3349 This variable contains the value of the SHORTSIZE symbol which
3350 indicates to the C program how many bytes there are in a short.
3352 shrpenv (libperl.U):
3353 If the user builds a shared libperl.so, then we need to tell the
3354 'perl' executable where it will be able to find the installed libperl.so.
3355 One way to do this on some systems is to set the environment variable
3356 LD_RUN_PATH to the directory that will be the final location of the
3357 shared libperl.so. The makefile can use this with something like
3358 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3360 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3363 See the main perl Makefile.SH for actual working usage.
3364 Alternatively, we might be able to use a command line option such
3365 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3366 $archlibexp/CORE (Linux).
3368 shsharp (spitshell.U):
3369 This variable tells further Configure units whether your sh can
3372 sig_count (sig_name.U):
3373 This variable holds a number larger than the largest valid
3374 signal number. This is usually the same as the NSIG macro.
3376 sig_name (sig_name.U):
3377 This variable holds the signal names, space separated. The leading
3378 SIG in signal name is removed. A ZERO is prepended to the
3379 list. This is currently not used.
3381 sig_name_init (sig_name.U):
3382 This variable holds the signal names, enclosed in double quotes and
3383 separated by commas, suitable for use in the SIG_NAME definition
3384 below. A "ZERO" is prepended to the list, and the list is
3385 terminated with a plain 0. The leading SIG in signal names
3386 is removed. See sig_num.
3388 sig_num (sig_name.U):
3389 This variable holds the signal numbers, space separated. A ZERO is
3390 prepended to the list (corresponding to the fake SIGZERO), and
3391 the list is terminated with a 0. Those numbers correspond to
3392 the value of the signal listed in the same place within the
3395 sig_num_init (sig_name.U):
3396 This variable holds the signal numbers, enclosed in double quotes and
3397 separated by commas, suitable for use in the SIG_NUM definition
3398 below. A "ZERO" is prepended to the list, and the list is
3399 terminated with a plain 0.
3401 sig_size (sig_name.U):
3402 This variable contains the number of elements of the sig_name
3403 and sig_num arrays, excluding the final NULL entry.
3405 signal_t (d_voidsig.U):
3406 This variable holds the type of the signal handler (void or int).
3408 sitearch (sitearch.U):
3409 This variable contains the eventual value of the SITEARCH symbol,
3410 which is the name of the private library for this package. It may
3411 have a ~ on the front. It is up to the makefile to eventually create
3412 this directory while performing installation (with ~ substitution).
3413 The standard distribution will put nothing in this directory.
3414 After perl has been installed, users may install their own local
3415 architecture-dependent modules in this directory with
3416 MakeMaker Makefile.PL
3417 or equivalent. See INSTALL for details.
3419 sitearchexp (sitearch.U):
3420 This variable is the ~name expanded version of sitearch, so that you
3421 may use it directly in Makefiles or shell scripts.
3423 sitebin (sitebin.U):
3424 This variable holds the name of the directory in which the user wants
3425 to put add-on publicly executable files for the package in question. It
3426 is most often a local directory such as /usr/local/bin. Programs using
3427 this variable must be prepared to deal with ~name substitution.
3428 The standard distribution will put nothing in this directory.
3429 After perl has been installed, users may install their own local
3430 executables in this directory with
3431 MakeMaker Makefile.PL
3432 or equivalent. See INSTALL for details.
3434 sitebinexp (sitebin.U):
3435 This is the same as the sitebin variable, but is filename expanded at
3436 configuration time, for use in your makefiles.
3438 sitelib (sitelib.U):
3439 This variable contains the eventual value of the SITELIB symbol,
3440 which is the name of the private library for this package. It may
3441 have a ~ on the front. It is up to the makefile to eventually create
3442 this directory while performing installation (with ~ substitution).
3443 The standard distribution will put nothing in this directory.
3444 After perl has been installed, users may install their own local
3445 architecture-independent modules in this directory with
3446 MakeMaker Makefile.PL
3447 or equivalent. See INSTALL for details.
3449 sitelib_stem (sitelib.U):
3450 This variable is $sitelibexp with any trailing version-specific component
3451 removed. The elements in inc_version_list (inc_version_list.U) can
3452 be tacked onto this variable to generate a list of directories to search.
3454 sitelibexp (sitelib.U):
3455 This variable is the ~name expanded version of sitelib, so that you
3456 may use it directly in Makefiles or shell scripts.
3458 siteprefix (siteprefix.U):
3459 This variable holds the full absolute path of the directory below
3460 which the user will install add-on packages.
3461 See INSTALL for usage and examples.
3463 siteprefixexp (siteprefix.U):
3464 This variable holds the full absolute path of the directory below
3465 which the user will install add-on packages. Derived from siteprefix.
3467 sizesize (sizesize.U):
3468 This variable contains the size of a sizetype in bytes.
3470 sizetype (sizetype.U):
3471 This variable defines sizetype to be something like size_t,
3472 unsigned long, or whatever type is used to declare length
3473 parameters for string functions.
3476 This variable is defined but not used by Configure.
3477 The value is a plain '' and is not useful.
3480 This variable is defined but not used by Configure.
3481 The value is a plain '' and is not useful.
3484 This variable holds the extension used to identify shared libraries
3485 (also known as shared objects) on the system. Usually set to 'so'.
3487 sockethdr (d_socket.U):
3488 This variable has any cpp '-I' flags needed for socket support.
3490 socketlib (d_socket.U):
3491 This variable has the names of any libraries needed for socket support.
3493 socksizetype (socksizetype.U):
3494 This variable holds the type used for the size argument
3495 for various socket calls like accept. Usual values include
3496 socklen_t, size_t, and int.
3499 This variable is used internally by Configure to determine the
3500 full pathname (if any) of the sort program. After Configure runs,
3501 the value is reset to a plain "sort" and is not useful.
3503 spackage (package.U):
3504 This variable contains the name of the package being constructed,
3505 with the first letter uppercased, i.e. suitable for starting
3508 spitshell (spitshell.U):
3509 This variable contains the command necessary to spit out a runnable
3510 shell on this system. It is either cat or a grep '-v' for # comments.
3512 sPRId64 (quadfio.U):
3513 This variable, if defined, contains the string used by stdio to
3514 format 64-bit decimal numbers (format 'd') for output.
3516 sPRIeldbl (longdblfio.U):
3517 This variable, if defined, contains the string used by stdio to
3518 format long doubles (format 'e') for output.
3520 sPRIEUldbl (longdblfio.U):
3521 This variable, if defined, contains the string used by stdio to
3522 format long doubles (format 'E') for output.
3523 The 'U' in the name is to separate this from sPRIeldbl so that even
3524 case-blind systems can see the difference.
3526 sPRIfldbl (longdblfio.U):
3527 This variable, if defined, contains the string used by stdio to
3528 format long doubles (format 'f') for output.
3530 sPRIFUldbl (longdblfio.U):
3531 This variable, if defined, contains the string used by stdio to
3532 format long doubles (format 'F') for output.
3533 The 'U' in the name is to separate this from sPRIfldbl so that even
3534 case-blind systems can see the difference.
3536 sPRIgldbl (longdblfio.U):
3537 This variable, if defined, contains the string used by stdio to
3538 format long doubles (format 'g') for output.
3540 sPRIGUldbl (longdblfio.U):
3541 This variable, if defined, contains the string used by stdio to
3542 format long doubles (format 'G') for output.
3543 The 'U' in the name is to separate this from sPRIgldbl so that even
3544 case-blind systems can see the difference.
3546 sPRIi64 (quadfio.U):
3547 This variable, if defined, contains the string used by stdio to
3548 format 64-bit decimal numbers (format 'i') for output.
3550 sPRIo64 (quadfio.U):
3551 This variable, if defined, contains the string used by stdio to
3552 format 64-bit octal numbers (format 'o') for output.
3554 sPRIu64 (quadfio.U):
3555 This variable, if defined, contains the string used by stdio to
3556 format 64-bit unsigned decimal numbers (format 'u') for output.
3558 sPRIx64 (quadfio.U):
3559 This variable, if defined, contains the string used by stdio to
3560 format 64-bit hexadecimal numbers (format 'x') for output.
3562 sPRIXU64 (quadfio.U):
3563 This variable, if defined, contains the string used by stdio to
3564 format 64-bit hExADECimAl numbers (format 'X') for output.
3565 The 'U' in the name is to separate this from sPRIx64 so that even
3566 case-blind systems can see the difference.
3569 This variable holds the path to the package source. It is up to
3570 the Makefile to use this variable and set VPATH accordingly to
3571 find the sources remotely.
3573 sSCNfldbl (longdblfio.U):
3574 This variable, if defined, contains the string used by stdio to
3575 format long doubles (format 'f') for input.
3577 ssizetype (ssizetype.U):
3578 This variable defines ssizetype to be something like ssize_t,
3579 long or int. It is used by functions that return a count
3580 of bytes or an error condition. It must be a signed type.
3581 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3583 startperl (startperl.U):
3584 This variable contains the string to put on the front of a perl
3585 script to make sure (hopefully) that it runs with perl and not some
3586 shell. Of course, that leading line must be followed by the classical
3588 eval 'exec perl -S $0 ${1+"$@"}'
3589 if $running_under_some_shell;
3590 to guarantee perl startup should the shell execute the script. Note
3591 that this magic incatation is not understood by csh.
3593 startsh (startsh.U):
3594 This variable contains the string to put on the front of a shell
3595 script to make sure (hopefully) that it runs with sh and not some
3598 static_ext (Extensions.U):
3599 This variable holds a list of XS extension files we want to
3600 link statically into the package. It is used by Makefile.
3602 stdchar (stdchar.U):
3603 This variable conditionally defines STDCHAR to be the type of char
3604 used in stdio.h. It has the values "unsigned char" or "char".
3606 stdio_base (d_stdstdio.U):
3607 This variable defines how, given a FILE pointer, fp, to access the
3608 _base field (or equivalent) of stdio.h's FILE structure. This will
3609 be used to define the macro FILE_base(fp).
3611 stdio_bufsiz (d_stdstdio.U):
3612 This variable defines how, given a FILE pointer, fp, to determine
3613 the number of bytes store in the I/O buffer pointer to by the
3614 _base field (or equivalent) of stdio.h's FILE structure. This will
3615 be used to define the macro FILE_bufsiz(fp).
3617 stdio_cnt (d_stdstdio.U):
3618 This variable defines how, given a FILE pointer, fp, to access the
3619 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3620 be used to define the macro FILE_cnt(fp).
3622 stdio_filbuf (d_stdstdio.U):
3623 This variable defines how, given a FILE pointer, fp, to tell
3624 stdio to refill its internal buffers (?). This will
3625 be used to define the macro FILE_filbuf(fp).
3627 stdio_ptr (d_stdstdio.U):
3628 This variable defines how, given a FILE pointer, fp, to access the
3629 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3630 be used to define the macro FILE_ptr(fp).
3632 stdio_stream_array (stdio_streams.U):
3633 This variable tells the name of the array holding the stdio streams.
3634 Usual values include _iob, __iob, and __sF.
3636 strings (i_string.U):
3637 This variable holds the full path of the string header that will be
3638 used. Typically /usr/include/string.h or /usr/include/strings.h.
3641 This variable is defined but not used by Configure.
3642 The value is a plain '' and is not useful.
3644 subversion (patchlevel.U):
3645 The subversion level of this package.
3646 The value of subversion comes from the patchlevel.h file.
3647 In a version number such as 5.6.1, this is the "1".
3648 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3649 This is unique to perl.
3652 This variable holds the place where the manual is located on this
3653 system. It is not the place where the user wants to put his manual
3654 pages. Rather it is the place where Configure may look to find manual
3655 for unix commands (section 1 of the manual usually). See mansrc.
3658 This variable is defined but not used by Configure.
3659 The value is a plain '' and is not useful.
3662 This variable is defined but not used by Configure.
3663 The value is a plain '' and is not useful.
3665 targetarch (Cross.U):
3666 If cross-compiling, this variable contains the target architecture.
3667 If not, this will be empty.
3670 This variable is defined but not used by Configure.
3671 The value is a plain '' and is not useful.
3674 This variable is defined but not used by Configure.
3675 The value is a plain '' and is not useful.
3678 This variable is used internally by Configure to determine the
3679 full pathname (if any) of the test program. After Configure runs,
3680 the value is reset to a plain "test" and is not useful.
3682 timeincl (i_time.U):
3683 This variable holds the full path of the included time header(s).
3685 timetype (d_time.U):
3686 This variable holds the type returned by time(). It can be long,
3687 or time_t on BSD sites (in which case <sys/types.h> should be
3688 included). Anyway, the type Time_t should be used.
3691 This variable contains the command used by Configure
3692 to copy to from the target host. Useful and available
3693 only during Perl build.
3694 The string ':' if not cross-compiling.
3697 This variable is used internally by Configure to determine the
3698 full pathname (if any) of the touch program. After Configure runs,
3699 the value is reset to a plain "touch" and is not useful.
3702 This variable is used internally by Configure to determine the
3703 full pathname (if any) of the tr program. After Configure runs,
3704 the value is reset to a plain "tr" and is not useful.
3707 This variable contains the value to be passed to the tr(1)
3708 command to transliterate a newline. Typical values are
3709 '\012' and '\n'. This is needed for EBCDIC systems where
3710 newline is not necessarily '\012'.
3713 This variable is defined but not used by Configure.
3714 The value is a plain '' and is not useful.
3717 This variable is the size of an U16 in bytes.
3720 This variable contains the C type used for Perl's U16.
3723 This variable is the size of an U32 in bytes.
3726 This variable contains the C type used for Perl's U32.
3729 This variable is the size of an U64 in bytes.
3732 This variable contains the C type used for Perl's U64.
3735 This variable is the size of an U8 in bytes.
3738 This variable contains the C type used for Perl's U8.
3741 This variable contains the format string used for printing a Uid_t.
3743 uidsign (uidsign.U):
3744 This variable contains the signedness of a uidtype.
3745 1 for unsigned, -1 for signed.
3747 uidsize (uidsize.U):
3748 This variable contains the size of a uidtype in bytes.
3750 uidtype (uidtype.U):
3751 This variable defines Uid_t to be something like uid_t, int,
3752 ushort, or whatever type is used to declare user ids in the kernel.
3755 This variable is used internally by Configure to determine the
3756 full pathname (if any) of the uname program. After Configure runs,
3757 the value is reset to a plain "uname" and is not useful.
3760 This variable is used internally by Configure to determine the
3761 full pathname (if any) of the uniq program. After Configure runs,
3762 the value is reset to a plain "uniq" and is not useful.
3764 uquadtype (quadtype.U):
3765 This variable defines Uquad_t to be something like unsigned long,
3766 unsigned int, unsigned long long, uint64_t, or whatever type is
3767 used for 64-bit integers.
3769 use5005threads (usethreads.U):
3770 This variable conditionally defines the USE_5005THREADS symbol,
3771 and indicates that Perl should be built to use the 5.005-based
3772 threading implementation.
3774 use64bitall (use64bits.U):
3775 This variable conditionally defines the USE_64_BIT_ALL symbol,
3776 and indicates that 64-bit integer types should be used
3777 when available. The maximal possible
3778 64-bitness is employed: LP64 or ILP64, meaning that you will
3779 be able to use more than 2 gigabytes of memory. This mode is
3780 even more binary incompatible than USE_64_BIT_INT. You may not
3781 be able to run the resulting executable in a 32-bit CPU at all or
3782 you may need at least to reboot your OS to 64-bit mode.
3784 use64bitint (use64bits.U):
3785 This variable conditionally defines the USE_64_BIT_INT symbol,
3786 and indicates that 64-bit integer types should be used
3787 when available. The minimal possible 64-bitness
3788 is employed, just enough to get 64-bit integers into Perl.
3789 This may mean using for example "long longs", while your memory
3790 may still be limited to 2 gigabytes.
3792 usecrosscompile (Cross.U):
3793 This variable conditionally defines the USE_CROSS_COMPILE symbol,
3794 and indicates that Perl has been cross-compiled.
3797 This variable indicates if the system supports dynamic
3798 loading of some sort. See also dlsrc and dlobj.
3800 useithreads (usethreads.U):
3801 This variable conditionally defines the USE_ITHREADS symbol,
3802 and indicates that Perl should be built to use the interpreter-based
3803 threading implementation.
3805 uselargefiles (uselfs.U):
3806 This variable conditionally defines the USE_LARGE_FILES symbol,
3807 and indicates that large file interfaces should be used when
3810 uselongdouble (uselongdbl.U):
3811 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3812 and indicates that long doubles should be used when available.
3814 usemorebits (usemorebits.U):
3815 This variable conditionally defines the USE_MORE_BITS symbol,
3816 and indicates that explicit 64-bit interfaces and long doubles
3817 should be used when available.
3819 usemultiplicity (usemultiplicity.U):
3820 This variable conditionally defines the MULTIPLICITY symbol,
3821 and indicates that Perl should be built to use multiplicity.
3823 usemymalloc (mallocsrc.U):
3824 This variable contains y if the malloc that comes with this package
3825 is desired over the system's version of malloc. People often include
3826 special versions of malloc for effiency, but such versions are often
3827 less portable. See also mallocsrc and mallocobj.
3828 If this is 'y', then -lmalloc is removed from $libs.
3831 This variable contains 'true' or 'false' depending whether the
3832 nm extraction is wanted or not.
3834 useopcode (Extensions.U):
3835 This variable holds either 'true' or 'false' to indicate
3836 whether the Opcode extension should be used. The sole
3837 use for this currently is to allow an easy mechanism
3838 for users to skip the Opcode extension from the Configure
3841 useperlio (useperlio.U):
3842 This variable conditionally defines the USE_PERLIO symbol,
3843 and indicates that the PerlIO abstraction should be
3846 useposix (Extensions.U):
3847 This variable holds either 'true' or 'false' to indicate
3848 whether the POSIX extension should be used. The sole
3849 use for this currently is to allow an easy mechanism
3850 for hints files to indicate that POSIX will not compile
3851 on a particular system.
3853 usereentrant (usethreads.U):
3854 This variable conditionally defines the USE_REENTRANT_API symbol,
3855 which indicates that the thread code may try to use the various
3856 _r versions of library functions. This is only potentially
3857 meaningful if usethreads is set and is very experimental, it is
3858 not even prompted for.
3861 This variable is set to true when the user agrees to use sfio.
3862 It is set to false when sfio is not available or when the user
3863 explicitely requests not to use sfio. It is here primarily so
3864 that command-line settings can override the auto-detection of
3865 d_sfio without running into a "WHOA THERE".
3867 useshrplib (libperl.U):
3868 This variable is set to 'yes' if the user wishes
3869 to build a shared libperl, and 'no' otherwise.
3871 usesocks (usesocks.U):
3872 This variable conditionally defines the USE_SOCKS symbol,
3873 and indicates that Perl should be built to use SOCKS.
3875 usethreads (usethreads.U):
3876 This variable conditionally defines the USE_THREADS symbol,
3877 and indicates that Perl should be built to use threads.
3879 usevendorprefix (vendorprefix.U):
3880 This variable tells whether the vendorprefix
3881 and consequently other vendor* paths are in use.
3883 usevfork (d_vfork.U):
3884 This variable is set to true when the user accepts to use vfork.
3885 It is set to false when no vfork is available or when the user
3886 explicitely requests not to use vfork.
3889 This variable holds the path of the include files, which is
3890 usually /usr/include. It is mainly used by other Configure units.
3893 This variable is defined but not used by Configure.
3894 The value is a plain '' and is not useful.
3896 uvoformat (perlxvf.U):
3897 This variable contains the format string used for printing
3898 a Perl UV as an unsigned octal integer.
3901 This variable is the size of a UV in bytes.
3904 This variable contains the C type used for Perl's UV.
3906 uvuformat (perlxvf.U):
3907 This variable contains the format string used for printing
3908 a Perl UV as an unsigned decimal integer.
3910 uvxformat (perlxvf.U):
3911 This variable contains the format string used for printing
3912 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3914 uvXUformat (perlxvf.U):
3915 This variable contains the format string used for printing
3916 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3918 vendorarch (vendorarch.U):
3919 This variable contains the value of the PERL_VENDORARCH symbol.
3920 It may have a ~ on the front.
3921 The standard distribution will put nothing in this directory.
3922 Vendors who distribute perl may wish to place their own
3923 architecture-dependent modules and extensions in this directory with
3924 MakeMaker Makefile.PL INSTALLDIRS=vendor
3925 or equivalent. See INSTALL for details.
3927 vendorarchexp (vendorarch.U):
3928 This variable is the ~name expanded version of vendorarch, so that you
3929 may use it directly in Makefiles or shell scripts.
3931 vendorbin (vendorbin.U):
3932 This variable contains the eventual value of the VENDORBIN symbol.
3933 It may have a ~ on the front.
3934 The standard distribution will put nothing in this directory.
3935 Vendors who distribute perl may wish to place additional
3936 binaries in this directory with
3937 MakeMaker Makefile.PL INSTALLDIRS=vendor
3938 or equivalent. See INSTALL for details.
3940 vendorbinexp (vendorbin.U):
3941 This variable is the ~name expanded version of vendorbin, so that you
3942 may use it directly in Makefiles or shell scripts.
3944 vendorlib (vendorlib.U):
3945 This variable contains the eventual value of the VENDORLIB symbol,
3946 which is the name of the private library for this package.
3947 The standard distribution will put nothing in this directory.
3948 Vendors who distribute perl may wish to place their own
3949 modules in this directory with
3950 MakeMaker Makefile.PL INSTALLDIRS=vendor
3951 or equivalent. See INSTALL for details.
3953 vendorlib_stem (vendorlib.U):
3954 This variable is $vendorlibexp with any trailing version-specific component
3955 removed. The elements in inc_version_list (inc_version_list.U) can
3956 be tacked onto this variable to generate a list of directories to search.
3958 vendorlibexp (vendorlib.U):
3959 This variable is the ~name expanded version of vendorlib, so that you
3960 may use it directly in Makefiles or shell scripts.
3962 vendorprefix (vendorprefix.U):
3963 This variable holds the full absolute path of the directory below
3964 which the vendor will install add-on packages.
3965 See INSTALL for usage and examples.
3967 vendorprefixexp (vendorprefix.U):
3968 This variable holds the full absolute path of the directory below
3969 which the vendor will install add-on packages. Derived from vendorprefix.
3971 version (patchlevel.U):
3972 The full version number of this package, such as 5.6.1 (or 5_6_1).
3973 This combines revision, patchlevel, and subversion to get the
3974 full version number, including any possible subversions.
3975 This is suitable for use as a directory name, and hence is
3976 filesystem dependent.
3978 version_patchlevel_string (patchlevel.U):
3979 This is a string combining version, subversion and
3980 perl_patchlevel (if perl_patchlevel is non-zero).
3981 It is typically something like
3982 'version 7 subversion 1' or
3983 'version 7 subversion 1 patchlevel 11224'
3984 It is computed here to avoid duplication of code in myconfig.SH
3987 versiononly (versiononly.U):
3988 If set, this symbol indicates that only the version-specific
3989 components of a perl installation should be installed.
3990 This may be useful for making a test installation of a new
3991 version without disturbing the existing installation.
3992 Setting versiononly is equivalent to setting installperl's -v option.
3993 In particular, the non-versioned scripts and programs such as
3994 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
3995 (see INSTALL for a more complete list). Nor are the man
3997 Usually, this is undef.
4000 This variable is defined but not used by Configure.
4001 The value is a plain '' and is not useful.
4003 voidflags (voidflags.U):
4004 This variable contains the eventual value of the VOIDFLAGS symbol,
4005 which indicates how much support of the void type is given by this
4006 compiler. See VOIDFLAGS for more info.
4009 This variable holds extra path (space-separated) used to find
4010 libraries on this platform, for example CPU-specific libraries
4011 (on multi-CPU platforms) may be listed here.
4013 xs_apiversion (xs_apiversion.U):
4014 This variable contains the version of the oldest perl binary
4015 compatible with the present perl. perl.c:incpush() and
4016 lib/lib.pm will automatically search in $sitearch for older
4017 directories across major versions back to xs_apiversion.
4018 This is only useful if you have a perl library directory tree
4019 structured like the default one.
4020 See INSTALL for how this works.
4021 The versioned site_perl directory was introduced in 5.005,
4022 so that is the lowest possible value.
4023 Since this can depend on compile time options (such as
4024 bincompat) it is set by Configure. Other non-default sources
4025 of potential incompatibility, such as multiplicity, threads,
4026 debugging, 64bits, sfio, etc., are not checked for currently,
4027 though in principle we could go snooping around in old
4031 This variable holds the name of the compiler compiler we
4032 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4035 This variable contains any additional yacc flags desired by the
4036 user. It is up to the Makefile to use this.
4039 This variable is defined but not used by Configure.
4040 The value is a plain '' and is not useful.
4043 This variable is used internally by Configure to determine the
4044 full pathname (if any) of the zip program. After Configure runs,
4045 the value is reset to a plain "zip" and is not useful.