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))'
694 If you are not content with these choices, use gconvert_preference
695 and gconvert_ld_preference, which if present are space-separated
696 lists of functions to try with calling convention of gcvt,
697 respectively for doubles and long doubles.
699 d_getcwd (d_getcwd.U):
700 This variable conditionally defines the HAS_GETCWD symbol, which
701 indicates to the C program that the getcwd() routine is available
702 to get the current working directory.
704 d_getespwnam (d_getespwnam.U):
705 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
706 available to retrieve enchanced (shadow) password entries by name.
708 d_getfsstat (d_getfsstat.U):
709 This variable conditionally defines the HAS_GETFSSTAT symbol, which
710 indicates to the C program that the getfsstat() routine is available.
712 d_getgrent (d_getgrent.U):
713 This variable conditionally defines the HAS_GETGRENT symbol, which
714 indicates to the C program that the getgrent() routine is available
715 for sequential access of the group database.
717 d_getgrps (d_getgrps.U):
718 This variable conditionally defines the HAS_GETGROUPS symbol, which
719 indicates to the C program that the getgroups() routine is available
720 to get the list of process groups.
722 d_gethbyaddr (d_gethbyad.U):
723 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
724 indicates to the C program that the gethostbyaddr() routine is available
725 to look up hosts by their IP addresses.
727 d_gethbyname (d_gethbynm.U):
728 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
729 indicates to the C program that the gethostbyname() routine is available
730 to look up host names in some data base or other.
732 d_gethent (d_gethent.U):
733 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
734 available to look up host names in some data base or another.
736 d_gethname (d_gethname.U):
737 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
738 indicates to the C program that the gethostname() routine may be
739 used to derive the host name.
741 d_gethostprotos (d_gethostprotos.U):
742 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
743 which indicates to the C program that <netdb.h> supplies
744 prototypes for the various gethost*() functions.
745 See also netdbtype.U for probing for various netdb types.
747 d_getitimer (d_getitimer.U):
748 This variable conditionally defines the HAS_GETITIMER symbol, which
749 indicates to the C program that the getitimer() routine is available.
751 d_getlogin (d_getlogin.U):
752 This variable conditionally defines the HAS_GETLOGIN symbol, which
753 indicates to the C program that the getlogin() routine is available
754 to get the login name.
756 d_getmnt (d_getmnt.U):
757 This variable conditionally defines the HAS_GETMNT symbol, which
758 indicates to the C program that the getmnt() routine is available
759 to retrieve one or more mount info blocks by filename.
761 d_getmntent (d_getmntent.U):
762 This variable conditionally defines the HAS_GETMNTENT symbol, which
763 indicates to the C program that the getmntent() routine is available
764 to iterate through mounted files to get their mount info.
766 d_getnbyaddr (d_getnbyad.U):
767 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
768 indicates to the C program that the getnetbyaddr() routine is available
769 to look up networks by their IP addresses.
771 d_getnbyname (d_getnbynm.U):
772 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
773 indicates to the C program that the getnetbyname() routine is available
774 to look up networks by their names.
776 d_getnent (d_getnent.U):
777 This variable conditionally defines HAS_GETNETENT if getnetent() is
778 available to look up network names in some data base or another.
780 d_getnetprotos (d_getnetprotos.U):
781 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
782 which indicates to the C program that <netdb.h> supplies
783 prototypes for the various getnet*() functions.
784 See also netdbtype.U for probing for various netdb types.
786 d_getpagsz (d_getpagsz.U):
787 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
788 is available to get the system page size.
790 d_getpbyname (d_getprotby.U):
791 This variable conditionally defines the HAS_GETPROTOBYNAME
792 symbol, which indicates to the C program that the
793 getprotobyname() routine is available to look up protocols
796 d_getpbynumber (d_getprotby.U):
797 This variable conditionally defines the HAS_GETPROTOBYNUMBER
798 symbol, which indicates to the C program that the
799 getprotobynumber() routine is available to look up protocols
802 d_getpent (d_getpent.U):
803 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
804 available to look up protocols in some data base or another.
806 d_getpgid (d_getpgid.U):
807 This variable conditionally defines the HAS_GETPGID symbol, which
808 indicates to the C program that the getpgid(pid) function
809 is available to get the process group id.
811 d_getpgrp2 (d_getpgrp2.U):
812 This variable conditionally defines the HAS_GETPGRP2 symbol, which
813 indicates to the C program that the getpgrp2() (as in DG/UX) routine
814 is available to get the current process group.
816 d_getpgrp (d_getpgrp.U):
817 This variable conditionally defines HAS_GETPGRP if getpgrp() is
818 available to get the current process group.
820 d_getppid (d_getppid.U):
821 This variable conditionally defines the HAS_GETPPID symbol, which
822 indicates to the C program that the getppid() routine is available
823 to get the parent process ID.
825 d_getprior (d_getprior.U):
826 This variable conditionally defines HAS_GETPRIORITY if getpriority()
827 is available to get a process's priority.
829 d_getprotoprotos (d_getprotoprotos.U):
830 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
831 which indicates to the C program that <netdb.h> supplies
832 prototypes for the various getproto*() functions.
833 See also netdbtype.U for probing for various netdb types.
835 d_getprpwnam (d_getprpwnam.U):
836 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
837 available to retrieve protected (shadow) password entries by name.
839 d_getpwent (d_getpwent.U):
840 This variable conditionally defines the HAS_GETPWENT symbol, which
841 indicates to the C program that the getpwent() routine is available
842 for sequential access of the passwd database.
844 d_getsbyname (d_getsrvby.U):
845 This variable conditionally defines the HAS_GETSERVBYNAME
846 symbol, which indicates to the C program that the
847 getservbyname() routine is available to look up services
850 d_getsbyport (d_getsrvby.U):
851 This variable conditionally defines the HAS_GETSERVBYPORT
852 symbol, which indicates to the C program that the
853 getservbyport() routine is available to look up services
856 d_getsent (d_getsent.U):
857 This variable conditionally defines HAS_GETSERVENT if getservent() is
858 available to look up network services in some data base or another.
860 d_getservprotos (d_getservprotos.U):
861 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
862 which indicates to the C program that <netdb.h> supplies
863 prototypes for the various getserv*() functions.
864 See also netdbtype.U for probing for various netdb types.
866 d_getspnam (d_getspnam.U):
867 This variable conditionally defines HAS_GETSPNAM if getspnam() is
868 available to retrieve SysV shadow password entries by name.
870 d_gettimeod (d_ftime.U):
871 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
872 indicates that the gettimeofday() system call exists (to obtain a
873 sub-second accuracy clock). You should probably include <sys/resource.h>.
875 d_gnulibc (d_gnulibc.U):
876 Defined if we're dealing with the GNU C Library.
878 d_grpasswd (i_grp.U):
879 This variable conditionally defines GRPASSWD, which indicates
880 that struct group in <grp.h> contains gr_passwd.
882 d_hasmntopt (d_hasmntopt.U):
883 This variable conditionally defines the HAS_HASMNTOPT symbol, which
884 indicates to the C program that the hasmntopt() routine is available
885 to query the mount options of file systems.
888 This variable conditionally defines HAS_HTONL if htonl() and its
889 friends are available to do network order byte swapping.
891 d_index (d_strchr.U):
892 This variable conditionally defines HAS_INDEX if index() and
893 rindex() are available for string searching.
895 d_inetaton (d_inetaton.U):
896 This variable conditionally defines the HAS_INET_ATON symbol, which
897 indicates to the C program that the inet_aton() function is available
898 to parse IP address "dotted-quad" strings.
900 d_int64_t (d_int64_t.U):
901 This symbol will be defined if the C compiler supports int64_t.
903 d_isascii (d_isascii.U):
904 This variable conditionally defines the HAS_ISASCII constant,
905 which indicates to the C program that isascii() is available.
907 d_isfinite (d_isfinite.U):
908 This variable conditionally defines the HAS_ISFINITE symbol, which
909 indicates to the C program that the isfinite() routine is available.
912 This variable conditionally defines the HAS_ISINF symbol, which
913 indicates to the C program that the isinf() routine is available.
916 This variable conditionally defines the HAS_ISNAN symbol, which
917 indicates to the C program that the isnan() routine is available.
919 d_isnanl (d_isnanl.U):
920 This variable conditionally defines the HAS_ISNANL symbol, which
921 indicates to the C program that the isnanl() routine is available.
923 d_killpg (d_killpg.U):
924 This variable conditionally defines the HAS_KILLPG symbol, which
925 indicates to the C program that the killpg() routine is available
926 to kill process groups.
928 d_lchown (d_lchown.U):
929 This variable conditionally defines the HAS_LCHOWN symbol, which
930 indicates to the C program that the lchown() routine is available
931 to operate on a symbolic link (instead of following the link).
933 d_ldbl_dig (d_ldbl_dig.U):
934 This variable conditionally defines d_ldbl_dig if this system's
935 header files provide LDBL_DIG, which is the number of significant
936 digits in a long double precision number.
939 This variable conditionally defines HAS_LINK if link() is
940 available to create hard links.
942 d_locconv (d_locconv.U):
943 This variable conditionally defines HAS_LOCALECONV if localeconv() is
944 available for numeric and monetary formatting conventions.
947 This variable conditionally defines HAS_LOCKF if lockf() is
948 available to do file locking.
950 d_longdbl (d_longdbl.U):
951 This variable conditionally defines HAS_LONG_DOUBLE if
952 the long double type is supported.
954 d_longlong (d_longlong.U):
955 This variable conditionally defines HAS_LONG_LONG if
956 the long long type is supported.
958 d_lseekproto (d_lseekproto.U):
959 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
960 which indicates to the C program that the system provides
961 a prototype for the lseek() function. Otherwise, it is
962 up to the program to supply one.
965 This variable conditionally defines HAS_LSTAT if lstat() is
966 available to do file stats on symbolic links.
968 d_madvise (d_madvise.U):
969 This variable conditionally defines HAS_MADVISE if madvise() is
970 available to map a file into memory.
973 This variable conditionally defines the HAS_MBLEN symbol, which
974 indicates to the C program that the mblen() routine is available
975 to find the number of bytes in a multibye character.
977 d_mbstowcs (d_mbstowcs.U):
978 This variable conditionally defines the HAS_MBSTOWCS symbol, which
979 indicates to the C program that the mbstowcs() routine is available
980 to convert a multibyte string into a wide character string.
982 d_mbtowc (d_mbtowc.U):
983 This variable conditionally defines the HAS_MBTOWC symbol, which
984 indicates to the C program that the mbtowc() routine is available
985 to convert multibyte to a wide character.
987 d_memchr (d_memchr.U):
988 This variable conditionally defines the HAS_MEMCHR symbol, which
989 indicates to the C program that the memchr() routine is available
990 to locate characters within a C string.
992 d_memcmp (d_memcmp.U):
993 This variable conditionally defines the HAS_MEMCMP symbol, which
994 indicates to the C program that the memcmp() routine is available
995 to compare blocks of memory.
997 d_memcpy (d_memcpy.U):
998 This variable conditionally defines the HAS_MEMCPY symbol, which
999 indicates to the C program that the memcpy() routine is available
1000 to copy blocks of memory.
1002 d_memmove (d_memmove.U):
1003 This variable conditionally defines the HAS_MEMMOVE symbol, which
1004 indicates to the C program that the memmove() routine is available
1005 to copy potentatially overlapping blocks of memory.
1007 d_memset (d_memset.U):
1008 This variable conditionally defines the HAS_MEMSET symbol, which
1009 indicates to the C program that the memset() routine is available
1010 to set blocks of memory.
1012 d_mkdir (d_mkdir.U):
1013 This variable conditionally defines the HAS_MKDIR symbol, which
1014 indicates to the C program that the mkdir() routine is available
1015 to create directories..
1017 d_mkdtemp (d_mkdtemp.U):
1018 This variable conditionally defines the HAS_MKDTEMP symbol, which
1019 indicates to the C program that the mkdtemp() routine is available
1020 to exclusively create a uniquely named temporary directory.
1022 d_mkfifo (d_mkfifo.U):
1023 This variable conditionally defines the HAS_MKFIFO symbol, which
1024 indicates to the C program that the mkfifo() routine is available.
1026 d_mkstemp (d_mkstemp.U):
1027 This variable conditionally defines the HAS_MKSTEMP symbol, which
1028 indicates to the C program that the mkstemp() routine is available
1029 to exclusively create and open a uniquely named temporary file.
1031 d_mkstemps (d_mkstemps.U):
1032 This variable conditionally defines the HAS_MKSTEMPS symbol, which
1033 indicates to the C program that the mkstemps() routine is available
1034 to exclusively create and open a uniquely named (with a suffix)
1037 d_mktime (d_mktime.U):
1038 This variable conditionally defines the HAS_MKTIME symbol, which
1039 indicates to the C program that the mktime() routine is available.
1042 This variable conditionally defines HAS_MMAP if mmap() is
1043 available to map a file into memory.
1045 d_modfl (d_modfl.U):
1046 This variable conditionally defines the HAS_MODFL symbol, which
1047 indicates to the C program that the modfl() routine is available.
1049 d_modfl_pow32_bug (d_modfl.U):
1050 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1051 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1052 For example from 4294967303.150000 one would get 4294967302.000000
1053 and 1.150000. The bug has been seen in certain versions of glibc,
1054 release 2.2.2 is known to be okay.
1056 d_mprotect (d_mprotect.U):
1057 This variable conditionally defines HAS_MPROTECT if mprotect() is
1058 available to modify the access protection of a memory mapped file.
1061 This variable conditionally defines the HAS_MSG symbol, which
1062 indicates that the entire msg*(2) library is present.
1064 d_msg_ctrunc (d_socket.U):
1065 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1066 which indicates that the MSG_CTRUNC is available. #ifdef is
1067 not enough because it may be an enum, glibc has been known to do this.
1069 d_msg_dontroute (d_socket.U):
1070 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1071 which indicates that the MSG_DONTROUTE is available. #ifdef is
1072 not enough because it may be an enum, glibc has been known to do this.
1074 d_msg_oob (d_socket.U):
1075 This variable conditionally defines the HAS_MSG_OOB symbol,
1076 which indicates that the MSG_OOB is available. #ifdef is
1077 not enough because it may be an enum, glibc has been known to do this.
1079 d_msg_peek (d_socket.U):
1080 This variable conditionally defines the HAS_MSG_PEEK symbol,
1081 which indicates that the MSG_PEEK is available. #ifdef is
1082 not enough because it may be an enum, glibc has been known to do this.
1084 d_msg_proxy (d_socket.U):
1085 This variable conditionally defines the HAS_MSG_PROXY symbol,
1086 which indicates that the MSG_PROXY is available. #ifdef is
1087 not enough because it may be an enum, glibc has been known to do this.
1089 d_msgctl (d_msgctl.U):
1090 This variable conditionally defines the HAS_MSGCTL symbol, which
1091 indicates to the C program that the msgctl() routine is available.
1093 d_msgget (d_msgget.U):
1094 This variable conditionally defines the HAS_MSGGET symbol, which
1095 indicates to the C program that the msgget() routine is available.
1097 d_msghdr_s (d_msghdr_s.U):
1098 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1099 which indicates that the struct msghdr is supported.
1101 d_msgrcv (d_msgrcv.U):
1102 This variable conditionally defines the HAS_MSGRCV symbol, which
1103 indicates to the C program that the msgrcv() routine is available.
1105 d_msgsnd (d_msgsnd.U):
1106 This variable conditionally defines the HAS_MSGSND symbol, which
1107 indicates to the C program that the msgsnd() routine is available.
1109 d_msync (d_msync.U):
1110 This variable conditionally defines HAS_MSYNC if msync() is
1111 available to synchronize a mapped file.
1113 d_munmap (d_munmap.U):
1114 This variable conditionally defines HAS_MUNMAP if munmap() is
1115 available to unmap a region mapped by mmap().
1117 d_mymalloc (mallocsrc.U):
1118 This variable conditionally defines MYMALLOC in case other parts
1119 of the source want to take special action if MYMALLOC is used.
1120 This may include different sorts of profiling or error detection.
1123 This variable conditionally defines the HAS_NICE symbol, which
1124 indicates to the C program that the nice() routine is available.
1126 d_nl_langinfo (d_nl_langinfo.U):
1127 This variable conditionally defines the HAS_NL_LANGINFO symbol, which
1128 indicates to the C program that the nl_langinfo() routine is available.
1130 d_nv_preserves_uv (perlxv.U):
1131 This variable indicates whether a variable of type nvtype
1132 can preserve all the bits a variable of type uvtype.
1134 d_nv_preserves_uv_bits (perlxv.U):
1135 This variable indicates how many of bits type uvtype
1136 a variable nvtype can preserve.
1138 d_off64_t (d_off64_t.U):
1139 This symbol will be defined if the C compiler supports off64_t.
1141 d_old_pthread_create_joinable (d_pthrattrj.U):
1142 This variable conditionally defines pthread_create_joinable.
1143 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1145 d_oldpthreads (usethreads.U):
1146 This variable conditionally defines the OLD_PTHREADS_API symbol,
1147 and indicates that Perl should be built to use the old
1148 draft POSIX threads API. This is only potentially meaningful if
1151 d_oldsock (d_socket.U):
1152 This variable conditionally defines the OLDSOCKET symbol, which
1153 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1155 d_open3 (d_open3.U):
1156 This variable conditionally defines the HAS_OPEN3 manifest constant,
1157 which indicates to the C program that the 3 argument version of
1158 the open(2) function is available.
1160 d_pathconf (d_pathconf.U):
1161 This variable conditionally defines the HAS_PATHCONF symbol, which
1162 indicates to the C program that the pathconf() routine is available
1163 to determine file-system related limits and options associated
1164 with a given filename.
1166 d_pause (d_pause.U):
1167 This variable conditionally defines the HAS_PAUSE symbol, which
1168 indicates to the C program that the pause() routine is available
1169 to suspend a process until a signal is received.
1171 d_perl_otherlibdirs (otherlibdirs.U):
1172 This variable conditionally defines PERL_OTHERLIBDIRS, which
1173 contains a colon-separated set of paths for the perl binary to
1174 include in @INC. See also otherlibdirs.
1176 d_phostname (d_gethname.U):
1177 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1178 contains the shell command which, when fed to popen(), may be
1179 used to derive the host name.
1182 This variable conditionally defines the HAS_PIPE symbol, which
1183 indicates to the C program that the pipe() routine is available
1184 to create an inter-process channel.
1187 This variable conditionally defines the HAS_POLL symbol, which
1188 indicates to the C program that the poll() routine is available
1189 to poll active file descriptors.
1191 d_portable (d_portable.U):
1192 This variable conditionally defines the PORTABLE symbol, which
1193 indicates to the C program that it should not assume that it is
1194 running on the machine it was compiled on.
1196 d_PRId64 (quadfio.U):
1197 This variable conditionally defines the PERL_PRId64 symbol, which
1198 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1200 d_PRIeldbl (longdblfio.U):
1201 This variable conditionally defines the PERL_PRIfldbl symbol, which
1202 indiciates that stdio has a symbol to print long doubles.
1204 d_PRIEUldbl (longdblfio.U):
1205 This variable conditionally defines the PERL_PRIfldbl symbol, which
1206 indiciates that stdio has a symbol to print long doubles.
1207 The 'U' in the name is to separate this from d_PRIeldbl so that even
1208 case-blind systems can see the difference.
1210 d_PRIfldbl (longdblfio.U):
1211 This variable conditionally defines the PERL_PRIfldbl symbol, which
1212 indiciates that stdio has a symbol to print long doubles.
1214 d_PRIFUldbl (longdblfio.U):
1215 This variable conditionally defines the PERL_PRIfldbl symbol, which
1216 indiciates that stdio has a symbol to print long doubles.
1217 The 'U' in the name is to separate this from d_PRIfldbl so that even
1218 case-blind systems can see the difference.
1220 d_PRIgldbl (longdblfio.U):
1221 This variable conditionally defines the PERL_PRIfldbl symbol, which
1222 indiciates that stdio has a symbol to print long doubles.
1224 d_PRIGUldbl (longdblfio.U):
1225 This variable conditionally defines the PERL_PRIfldbl symbol, which
1226 indiciates that stdio has a symbol to print long doubles.
1227 The 'U' in the name is to separate this from d_PRIgldbl so that even
1228 case-blind systems can see the difference.
1230 d_PRIi64 (quadfio.U):
1231 This variable conditionally defines the PERL_PRIi64 symbol, which
1232 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1234 d_PRIo64 (quadfio.U):
1235 This variable conditionally defines the PERL_PRIo64 symbol, which
1236 indiciates that stdio has a symbol to print 64-bit octal numbers.
1238 d_PRIu64 (quadfio.U):
1239 This variable conditionally defines the PERL_PRIu64 symbol, which
1240 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1243 d_PRIx64 (quadfio.U):
1244 This variable conditionally defines the PERL_PRIx64 symbol, which
1245 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1247 d_PRIXU64 (quadfio.U):
1248 This variable conditionally defines the PERL_PRIXU64 symbol, which
1249 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1250 The 'U' in the name is to separate this from d_PRIx64 so that even
1251 case-blind systems can see the difference.
1253 d_procselfexe (d_procselfexe.U):
1254 Defined if $procselfexe is symlink to the absolute
1255 pathname of the executing program.
1257 d_pthread_atfork (d_pthread_atfork.U):
1258 This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
1259 which indicates to the C program that the pthread_atfork()
1260 routine is available.
1262 d_pthread_yield (d_pthread_y.U):
1263 This variable conditionally defines the HAS_PTHREAD_YIELD
1264 symbol if the pthread_yield routine is available to yield
1265 the execution of the current thread.
1268 This variable conditionally defines PWAGE, which indicates
1269 that struct passwd contains pw_age.
1271 d_pwchange (i_pwd.U):
1272 This variable conditionally defines PWCHANGE, which indicates
1273 that struct passwd contains pw_change.
1275 d_pwclass (i_pwd.U):
1276 This variable conditionally defines PWCLASS, which indicates
1277 that struct passwd contains pw_class.
1279 d_pwcomment (i_pwd.U):
1280 This variable conditionally defines PWCOMMENT, which indicates
1281 that struct passwd contains pw_comment.
1283 d_pwexpire (i_pwd.U):
1284 This variable conditionally defines PWEXPIRE, which indicates
1285 that struct passwd contains pw_expire.
1287 d_pwgecos (i_pwd.U):
1288 This variable conditionally defines PWGECOS, which indicates
1289 that struct passwd contains pw_gecos.
1291 d_pwpasswd (i_pwd.U):
1292 This variable conditionally defines PWPASSWD, which indicates
1293 that struct passwd contains pw_passwd.
1295 d_pwquota (i_pwd.U):
1296 This variable conditionally defines PWQUOTA, which indicates
1297 that struct passwd contains pw_quota.
1299 d_qgcvt (d_qgcvt.U):
1300 This variable conditionally defines the HAS_QGCVT symbol, which
1301 indicates to the C program that the qgcvt() routine is available.
1303 d_quad (quadtype.U):
1304 This variable, if defined, tells that there's a 64-bit integer type,
1307 d_readdir (d_readdir.U):
1308 This variable conditionally defines HAS_READDIR if readdir() is
1309 available to read directory entries.
1311 d_readlink (d_readlink.U):
1312 This variable conditionally defines the HAS_READLINK symbol, which
1313 indicates to the C program that the readlink() routine is available
1314 to read the value of a symbolic link.
1316 d_readv (d_readv.U):
1317 This variable conditionally defines the HAS_READV symbol, which
1318 indicates to the C program that the readv() routine is available.
1320 d_recvmsg (d_recvmsg.U):
1321 This variable conditionally defines the HAS_RECVMSG symbol, which
1322 indicates to the C program that the recvmsg() routine is available.
1324 d_rename (d_rename.U):
1325 This variable conditionally defines the HAS_RENAME symbol, which
1326 indicates to the C program that the rename() routine is available
1329 d_rewinddir (d_readdir.U):
1330 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1333 d_rmdir (d_rmdir.U):
1334 This variable conditionally defines HAS_RMDIR if rmdir() is
1335 available to remove directories.
1337 d_safebcpy (d_safebcpy.U):
1338 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1339 the bcopy() routine can do overlapping copies. Normally, you
1340 should probably use memmove().
1342 d_safemcpy (d_safemcpy.U):
1343 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1344 the memcpy() routine can do overlapping copies.
1345 For overlapping copies, memmove() should be used, if available.
1347 d_sanemcmp (d_sanemcmp.U):
1348 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1349 the memcpy() routine is available and can be used to compare relative
1350 magnitudes of chars with their high bits set.
1352 d_sbrkproto (d_sbrkproto.U):
1353 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1354 which indicates to the C program that the system provides
1355 a prototype for the sbrk() function. Otherwise, it is
1356 up to the program to supply one.
1358 d_sched_yield (d_pthread_y.U):
1359 This variable conditionally defines the HAS_SCHED_YIELD
1360 symbol if the sched_yield routine is available to yield
1361 the execution of the current thread.
1363 d_scm_rights (d_socket.U):
1364 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1365 which indicates that the SCM_RIGHTS is available. #ifdef is
1366 not enough because it may be an enum, glibc has been known to do this.
1368 d_SCNfldbl (longdblfio.U):
1369 This variable conditionally defines the PERL_PRIfldbl symbol, which
1370 indiciates that stdio has a symbol to scan long doubles.
1372 d_seekdir (d_readdir.U):
1373 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1376 d_select (d_select.U):
1377 This variable conditionally defines HAS_SELECT if select() is
1378 available to select active file descriptors. A <sys/time.h>
1379 inclusion may be necessary for the timeout field.
1382 This variable conditionally defines the HAS_SEM symbol, which
1383 indicates that the entire sem*(2) library is present.
1385 d_semctl (d_semctl.U):
1386 This variable conditionally defines the HAS_SEMCTL symbol, which
1387 indicates to the C program that the semctl() routine is available.
1389 d_semctl_semid_ds (d_union_semun.U):
1390 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1391 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1393 d_semctl_semun (d_union_semun.U):
1394 This variable conditionally defines USE_SEMCTL_SEMUN, which
1395 indicates that union semun is to be used for semctl IPC_STAT.
1397 d_semget (d_semget.U):
1398 This variable conditionally defines the HAS_SEMGET symbol, which
1399 indicates to the C program that the semget() routine is available.
1401 d_semop (d_semop.U):
1402 This variable conditionally defines the HAS_SEMOP symbol, which
1403 indicates to the C program that the semop() routine is available.
1405 d_sendmsg (d_sendmsg.U):
1406 This variable conditionally defines the HAS_SENDMSG symbol, which
1407 indicates to the C program that the sendmsg() routine is available.
1409 d_setegid (d_setegid.U):
1410 This variable conditionally defines the HAS_SETEGID symbol, which
1411 indicates to the C program that the setegid() routine is available
1412 to change the effective gid of the current program.
1414 d_seteuid (d_seteuid.U):
1415 This variable conditionally defines the HAS_SETEUID symbol, which
1416 indicates to the C program that the seteuid() routine is available
1417 to change the effective uid of the current program.
1419 d_setgrent (d_setgrent.U):
1420 This variable conditionally defines the HAS_SETGRENT symbol, which
1421 indicates to the C program that the setgrent() routine is available
1422 for initializing sequential access to the group database.
1424 d_setgrps (d_setgrps.U):
1425 This variable conditionally defines the HAS_SETGROUPS symbol, which
1426 indicates to the C program that the setgroups() routine is available
1427 to set the list of process groups.
1429 d_sethent (d_sethent.U):
1430 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1433 d_setitimer (d_setitimer.U):
1434 This variable conditionally defines the HAS_SETITIMER symbol, which
1435 indicates to the C program that the setitimer() routine is available.
1437 d_setlinebuf (d_setlnbuf.U):
1438 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1439 indicates to the C program that the setlinebuf() routine is available
1440 to change stderr or stdout from block-buffered or unbuffered to a
1443 d_setlocale (d_setlocale.U):
1444 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1445 available to handle locale-specific ctype implementations.
1447 d_setnent (d_setnent.U):
1448 This variable conditionally defines HAS_SETNETENT if setnetent() is
1451 d_setpent (d_setpent.U):
1452 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1455 d_setpgid (d_setpgid.U):
1456 This variable conditionally defines the HAS_SETPGID symbol if the
1457 setpgid(pid, gpid) function is available to set process group ID.
1459 d_setpgrp2 (d_setpgrp2.U):
1460 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1461 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1462 is available to set the current process group.
1464 d_setpgrp (d_setpgrp.U):
1465 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1466 available to set the current process group.
1468 d_setprior (d_setprior.U):
1469 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1470 is available to set a process's priority.
1472 d_setproctitle (d_setproctitle.U):
1473 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1474 which indicates to the C program that the setproctitle() routine
1477 d_setpwent (d_setpwent.U):
1478 This variable conditionally defines the HAS_SETPWENT symbol, which
1479 indicates to the C program that the setpwent() routine is available
1480 for initializing sequential access to the passwd database.
1482 d_setregid (d_setregid.U):
1483 This variable conditionally defines HAS_SETREGID if setregid() is
1484 available to change the real and effective gid of the current
1487 d_setresgid (d_setregid.U):
1488 This variable conditionally defines HAS_SETRESGID if setresgid() is
1489 available to change the real, effective and saved gid of the current
1492 d_setresuid (d_setreuid.U):
1493 This variable conditionally defines HAS_SETREUID if setresuid() is
1494 available to change the real, effective and saved uid of the current
1497 d_setreuid (d_setreuid.U):
1498 This variable conditionally defines HAS_SETREUID if setreuid() is
1499 available to change the real and effective uid of the current
1502 d_setrgid (d_setrgid.U):
1503 This variable conditionally defines the HAS_SETRGID symbol, which
1504 indicates to the C program that the setrgid() routine is available
1505 to change the real gid of the current program.
1507 d_setruid (d_setruid.U):
1508 This variable conditionally defines the HAS_SETRUID symbol, which
1509 indicates to the C program that the setruid() routine is available
1510 to change the real uid of the current program.
1512 d_setsent (d_setsent.U):
1513 This variable conditionally defines HAS_SETSERVENT if setservent() is
1516 d_setsid (d_setsid.U):
1517 This variable conditionally defines HAS_SETSID if setsid() is
1518 available to set the process group ID.
1520 d_setvbuf (d_setvbuf.U):
1521 This variable conditionally defines the HAS_SETVBUF symbol, which
1522 indicates to the C program that the setvbuf() routine is available
1523 to change buffering on an open stdio stream.
1526 This variable conditionally defines the USE_SFIO symbol,
1527 and indicates whether sfio is available (and should be used).
1530 This variable conditionally defines the HAS_SHM symbol, which
1531 indicates that the entire shm*(2) library is present.
1533 d_shmat (d_shmat.U):
1534 This variable conditionally defines the HAS_SHMAT symbol, which
1535 indicates to the C program that the shmat() routine is available.
1537 d_shmatprototype (d_shmat.U):
1538 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1539 symbol, which indicates that sys/shm.h has a prototype for
1542 d_shmctl (d_shmctl.U):
1543 This variable conditionally defines the HAS_SHMCTL symbol, which
1544 indicates to the C program that the shmctl() routine is available.
1546 d_shmdt (d_shmdt.U):
1547 This variable conditionally defines the HAS_SHMDT symbol, which
1548 indicates to the C program that the shmdt() routine is available.
1550 d_shmget (d_shmget.U):
1551 This variable conditionally defines the HAS_SHMGET symbol, which
1552 indicates to the C program that the shmget() routine is available.
1554 d_sigaction (d_sigaction.U):
1555 This variable conditionally defines the HAS_SIGACTION symbol, which
1556 indicates that the Vr4 sigaction() routine is available.
1558 d_sigprocmask (d_sigprocmask.U):
1559 This variable conditionally defines HAS_SIGPROCMASK
1560 if sigprocmask() is available to examine or change the signal mask
1561 of the calling process.
1563 d_sigsetjmp (d_sigsetjmp.U):
1564 This variable conditionally defines the HAS_SIGSETJMP symbol,
1565 which indicates that the sigsetjmp() routine is available to
1566 call setjmp() and optionally save the process's signal mask.
1568 d_sockatmark (d_sockatmark.U):
1569 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1570 indicates to the C program that the sockatmark() routine is available.
1572 d_sockatmarkproto (d_sockatmarkproto.U):
1573 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1574 which indicates to the C program that the system provides
1575 a prototype for the sockatmark() function. Otherwise, it is
1576 up to the program to supply one.
1578 d_socket (d_socket.U):
1579 This variable conditionally defines HAS_SOCKET, which indicates
1580 that the BSD socket interface is supported.
1582 d_socklen_t (d_socklen_t.U):
1583 This symbol will be defined if the C compiler supports socklen_t.
1585 d_sockpair (d_socket.U):
1586 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1587 indicates that the BSD socketpair() is supported.
1589 d_socks5_init (d_socks5_init.U):
1590 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1591 indicates to the C program that the socks5_init() routine is available.
1593 d_sqrtl (d_sqrtl.U):
1594 This variable conditionally defines the HAS_SQRTL symbol, which
1595 indicates to the C program that the sqrtl() routine is available.
1597 d_sresgproto (d_sresgproto.U):
1598 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1599 which indicates to the C program that the system provides
1600 a prototype for the setresgid() function. Otherwise, it is
1601 up to the program to supply one.
1603 d_sresuproto (d_sresuproto.U):
1604 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1605 which indicates to the C program that the system provides
1606 a prototype for the setresuid() function. Otherwise, it is
1607 up to the program to supply one.
1609 d_statblks (d_statblks.U):
1610 This variable conditionally defines USE_STAT_BLOCKS
1611 if this system has a stat structure declaring
1612 st_blksize and st_blocks.
1614 d_statfs_f_flags (d_statfs_f_flags.U):
1615 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1616 symbol, which indicates to struct statfs from has f_flags member.
1617 This kind of struct statfs is coming from sys/mount.h (BSD),
1618 not from sys/statfs.h (SYSV).
1620 d_statfs_s (d_statfs_s.U):
1621 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1622 which indicates that the struct statfs is supported.
1624 d_statvfs (d_statvfs.U):
1625 This variable conditionally defines the HAS_STATVFS symbol, which
1626 indicates to the C program that the statvfs() routine is available.
1628 d_stdio_cnt_lval (d_stdstdio.U):
1629 This variable conditionally defines STDIO_CNT_LVALUE if the
1630 FILE_cnt macro can be used as an lvalue.
1632 d_stdio_ptr_lval (d_stdstdio.U):
1633 This variable conditionally defines STDIO_PTR_LVALUE if the
1634 FILE_ptr macro can be used as an lvalue.
1636 d_stdio_ptr_lval_nochange_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 leaves File_cnt(fp) unchanged.
1640 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1641 This symbol is defined if using the FILE_ptr macro as an lvalue
1642 to increase the pointer by n has the side effect of decreasing the
1643 value of File_cnt(fp) by n.
1645 d_stdio_stream_array (stdio_streams.U):
1646 This variable tells whether there is an array holding
1649 d_stdiobase (d_stdstdio.U):
1650 This variable conditionally defines USE_STDIO_BASE if this system
1651 has a FILE structure declaring a usable _base field (or equivalent)
1654 d_stdstdio (d_stdstdio.U):
1655 This variable conditionally defines USE_STDIO_PTR if this system
1656 has a FILE structure declaring usable _ptr and _cnt fields (or
1657 equivalent) in stdio.h.
1659 d_strchr (d_strchr.U):
1660 This variable conditionally defines HAS_STRCHR if strchr() and
1661 strrchr() are available for string searching.
1663 d_strcoll (d_strcoll.U):
1664 This variable conditionally defines HAS_STRCOLL if strcoll() is
1665 available to compare strings using collating information.
1667 d_strctcpy (d_strctcpy.U):
1668 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1669 indicates to the C program that this C compiler knows how to copy
1672 d_strerrm (d_strerror.U):
1673 This variable holds what Strerrr is defined as to translate an error
1674 code condition into an error message string. It could be 'strerror'
1675 or a more complex macro emulating strrror with sys_errlist[], or the
1676 "unknown" string when both strerror and sys_errlist are missing.
1678 d_strerror (d_strerror.U):
1679 This variable conditionally defines HAS_STRERROR if strerror() is
1680 available to translate error numbers to strings.
1682 d_strftime (d_strftime.U):
1683 This variable conditionally defines the HAS_STRFTIME symbol, which
1684 indicates to the C program that the strftime() routine is available.
1686 d_strtod (d_strtod.U):
1687 This variable conditionally defines the HAS_STRTOD symbol, which
1688 indicates to the C program that the strtod() routine is available
1689 to provide better numeric string conversion than atof().
1691 d_strtol (d_strtol.U):
1692 This variable conditionally defines the HAS_STRTOL symbol, which
1693 indicates to the C program that the strtol() routine is available
1694 to provide better numeric string conversion than atoi() and friends.
1696 d_strtold (d_strtold.U):
1697 This variable conditionally defines the HAS_STRTOLD symbol, which
1698 indicates to the C program that the strtold() routine is available.
1700 d_strtoll (d_strtoll.U):
1701 This variable conditionally defines the HAS_STRTOLL symbol, which
1702 indicates to the C program that the strtoll() routine is available.
1704 d_strtoq (d_strtoq.U):
1705 This variable conditionally defines the HAS_STRTOQ symbol, which
1706 indicates to the C program that the strtoq() routine is available.
1708 d_strtoul (d_strtoul.U):
1709 This variable conditionally defines the HAS_STRTOUL symbol, which
1710 indicates to the C program that the strtoul() routine is available
1711 to provide conversion of strings to unsigned long.
1713 d_strtoull (d_strtoull.U):
1714 This variable conditionally defines the HAS_STRTOULL symbol, which
1715 indicates to the C program that the strtoull() routine is available.
1717 d_strtouq (d_strtouq.U):
1718 This variable conditionally defines the HAS_STRTOUQ symbol, which
1719 indicates to the C program that the strtouq() routine is available.
1721 d_strxfrm (d_strxfrm.U):
1722 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1723 available to transform strings.
1725 d_suidsafe (d_dosuid.U):
1726 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1727 if setuid scripts can be secure. This test looks in /dev/fd/.
1729 d_symlink (d_symlink.U):
1730 This variable conditionally defines the HAS_SYMLINK symbol, which
1731 indicates to the C program that the symlink() routine is available
1732 to create symbolic links.
1734 d_syscall (d_syscall.U):
1735 This variable conditionally defines HAS_SYSCALL if syscall() is
1736 available call arbitrary system calls.
1738 d_syscallproto (d_syscallproto.U):
1739 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
1740 which indicates to the C program that the system provides
1741 a prototype for the syscall() function. Otherwise, it is
1742 up to the program to supply one.
1744 d_sysconf (d_sysconf.U):
1745 This variable conditionally defines the HAS_SYSCONF symbol, which
1746 indicates to the C program that the sysconf() routine is available
1747 to determine system related limits and options.
1749 d_sysernlst (d_strerror.U):
1750 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1751 is available to translate error numbers to the symbolic name.
1753 d_syserrlst (d_strerror.U):
1754 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1755 available to translate error numbers to strings.
1757 d_system (d_system.U):
1758 This variable conditionally defines HAS_SYSTEM if system() is
1759 available to issue a shell command.
1761 d_tcgetpgrp (d_tcgtpgrp.U):
1762 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1763 indicates to the C program that the tcgetpgrp() routine is available.
1764 to get foreground process group ID.
1766 d_tcsetpgrp (d_tcstpgrp.U):
1767 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1768 indicates to the C program that the tcsetpgrp() routine is available
1769 to set foreground process group ID.
1771 d_telldir (d_readdir.U):
1772 This variable conditionally defines HAS_TELLDIR if telldir() is
1775 d_telldirproto (d_telldirproto.U):
1776 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1777 which indicates to the C program that the system provides
1778 a prototype for the telldir() function. Otherwise, it is
1779 up to the program to supply one.
1782 This variable conditionally defines the HAS_TIME symbol, which indicates
1783 that the time() routine exists. The time() routine is normaly
1784 provided on UNIX systems.
1786 d_times (d_times.U):
1787 This variable conditionally defines the HAS_TIMES symbol, which indicates
1788 that the times() routine exists. The times() routine is normaly
1789 provided on UNIX systems. You may have to include <sys/times.h>.
1791 d_truncate (d_truncate.U):
1792 This variable conditionally defines HAS_TRUNCATE if truncate() is
1793 available to truncate files.
1795 d_tzname (d_tzname.U):
1796 This variable conditionally defines HAS_TZNAME if tzname[] is
1797 available to access timezone names.
1799 d_u32align (d_u32align.U):
1800 This variable tells whether you must access character data
1801 through U32-aligned pointers.
1803 d_ualarm (d_ualarm.U):
1804 This variable conditionally defines the HAS_UALARM symbol, which
1805 indicates to the C program that the ualarm() routine is available.
1807 d_umask (d_umask.U):
1808 This variable conditionally defines the HAS_UMASK symbol, which
1809 indicates to the C program that the umask() routine is available.
1810 to set and get the value of the file creation mask.
1812 d_uname (d_gethname.U):
1813 This variable conditionally defines the HAS_UNAME symbol, which
1814 indicates to the C program that the uname() routine may be
1815 used to derive the host name.
1817 d_union_semun (d_union_semun.U):
1818 This variable conditionally defines HAS_UNION_SEMUN if the
1819 union semun is defined by including <sys/sem.h>.
1821 d_unordered (d_unordered.U):
1822 This variable conditionally defines the HAS_UNORDERED symbol, which
1823 indicates to the C program that the unordered() routine is available.
1825 d_usleep (d_usleep.U):
1826 This variable conditionally defines HAS_USLEEP if usleep() is
1827 available to do high granularity sleeps.
1829 d_usleepproto (d_usleepproto.U):
1830 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
1831 which indicates to the C program that the system provides
1832 a prototype for the usleep() function. Otherwise, it is
1833 up to the program to supply one.
1835 d_ustat (d_ustat.U):
1836 This variable conditionally defines HAS_USTAT if ustat() is
1837 available to query file system statistics by dev_t.
1839 d_vendorarch (vendorarch.U):
1840 This variable conditionally defined PERL_VENDORARCH.
1842 d_vendorbin (vendorbin.U):
1843 This variable conditionally defines PERL_VENDORBIN.
1845 d_vendorlib (vendorlib.U):
1846 This variable conditionally defines PERL_VENDORLIB.
1848 d_vfork (d_vfork.U):
1849 This variable conditionally defines the HAS_VFORK symbol, which
1850 indicates the vfork() routine is available.
1852 d_void_closedir (d_closedir.U):
1853 This variable conditionally defines VOID_CLOSEDIR if closedir()
1854 does not return a value.
1856 d_voidsig (d_voidsig.U):
1857 This variable conditionally defines VOIDSIG if this system
1858 declares "void (*signal(...))()" in signal.h. The old way was to
1859 declare it as "int (*signal(...))()".
1861 d_voidtty (i_sysioctl.U):
1862 This variable conditionally defines USE_IOCNOTTY to indicate that the
1863 ioctl() call with TIOCNOTTY should be used to void tty association.
1864 Otherwise (on USG probably), it is enough to close the standard file
1865 decriptors and do a setpgrp().
1867 d_volatile (d_volatile.U):
1868 This variable conditionally defines the HASVOLATILE symbol, which
1869 indicates to the C program that this C compiler knows about the
1870 volatile declaration.
1872 d_vprintf (d_vprintf.U):
1873 This variable conditionally defines the HAS_VPRINTF symbol, which
1874 indicates to the C program that the vprintf() routine is available
1875 to printf with a pointer to an argument list.
1877 d_wait4 (d_wait4.U):
1878 This variable conditionally defines the HAS_WAIT4 symbol, which
1879 indicates the wait4() routine is available.
1881 d_waitpid (d_waitpid.U):
1882 This variable conditionally defines HAS_WAITPID if waitpid() is
1883 available to wait for child process.
1885 d_wcstombs (d_wcstombs.U):
1886 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1887 indicates to the C program that the wcstombs() routine is available
1888 to convert wide character strings to multibyte strings.
1890 d_wctomb (d_wctomb.U):
1891 This variable conditionally defines the HAS_WCTOMB symbol, which
1892 indicates to the C program that the wctomb() routine is available
1893 to convert a wide character to a multibyte.
1895 d_writev (d_writev.U):
1896 This variable conditionally defines the HAS_WRITEV symbol, which
1897 indicates to the C program that the writev() routine is available.
1900 This variable conditionally defines the symbol XENIX, which alerts
1901 the C program that it runs under Xenix.
1904 This variable is used internally by Configure to determine the
1905 full pathname (if any) of the date program. After Configure runs,
1906 the value is reset to a plain "date" and is not useful.
1908 db_hashtype (i_db.U):
1909 This variable contains the type of the hash structure element
1910 in the <db.h> header file. In older versions of DB, it was
1911 int, while in newer ones it is u_int32_t.
1913 db_prefixtype (i_db.U):
1914 This variable contains the type of the prefix structure element
1915 in the <db.h> header file. In older versions of DB, it was
1916 int, while in newer ones it is size_t.
1918 db_version_major (i_db.U):
1919 This variable contains the major version number of
1920 Berkeley DB found in the <db.h> header file.
1922 db_version_minor (i_db.U):
1923 This variable contains the minor version number of
1924 Berkeley DB found in the <db.h> header file.
1925 For DB version 1 this is always 0.
1927 db_version_patch (i_db.U):
1928 This variable contains the patch version number of
1929 Berkeley DB found in the <db.h> header file.
1930 For DB version 1 this is always 0.
1932 defvoidused (voidflags.U):
1933 This variable contains the default value of the VOIDUSED symbol (15).
1935 direntrytype (i_dirent.U):
1936 This symbol is set to 'struct direct' or 'struct dirent' depending on
1937 whether dirent is available or not. You should use this pseudo type to
1938 portably declare your directory entries.
1941 This variable contains the extension that is to be used for the
1942 dynamically loaded modules that perl generaties.
1945 This variable contains the name of the dynamic loading file that
1946 will be used with the package.
1948 doublesize (doublesize.U):
1949 This variable contains the value of the DOUBLESIZE symbol, which
1950 indicates to the C program how many bytes there are in a double.
1952 drand01 (randfunc.U):
1953 Indicates the macro to be used to generate normalized
1954 random numbers. Uses randfunc, often divided by
1955 (double) (((unsigned long) 1 << randbits)) in order to
1956 normalize the result.
1957 In C programs, the macro 'Drand01' is mapped to drand01.
1959 dynamic_ext (Extensions.U):
1960 This variable holds a list of XS extension files we want to
1961 link dynamically into the package. It is used by Makefile.
1963 eagain (nblock_io.U):
1964 This variable bears the symbolic errno code set by read() when no
1965 data is present on the file and non-blocking I/O was enabled (otherwise,
1966 read() blocks naturally).
1969 This variable conditionally defines EBCDIC if this
1970 system uses EBCDIC encoding. Among other things, this
1971 means that the character ranges are not contiguous.
1975 This variable is used internally by Configure to determine the
1976 full pathname (if any) of the echo program. After Configure runs,
1977 the value is reset to a plain "echo" and is not useful.
1980 This variable is used internally by Configure to determine the
1981 full pathname (if any) of the egrep program. After Configure runs,
1982 the value is reset to a plain "egrep" and is not useful.
1985 This variable is defined but not used by Configure.
1986 The value is a plain '' and is not useful.
1989 When running under Eunice this variable contains a command which will
1990 convert a shell script to the proper form of text file for it to be
1991 executable by the shell. On other systems it is a no-op.
1994 This is an old synonym for _exe.
1997 This variable is used internally by Configure to determine the
1998 full pathname (if any) of the expr program. After Configure runs,
1999 the value is reset to a plain "expr" and is not useful.
2001 extensions (Extensions.U):
2002 This variable holds a list of all extension files (both XS and
2003 non-xs linked into the package. It is propagated to Config.pm
2004 and is typically used to test whether a particular extesion
2008 This variable holds a list of extra modules to install.
2010 fflushall (fflushall.U):
2011 This symbol, if defined, tells that to flush
2012 all pending stdio output one must loop through all
2013 the stdio file handles stored in an array and fflush them.
2014 Note that if fflushNULL is defined, fflushall will not
2015 even be probed for and will be left undefined.
2017 fflushNULL (fflushall.U):
2018 This symbol, if defined, tells that fflush(NULL) does flush
2019 all pending stdio output.
2022 This variable is defined but not used by Configure.
2023 The value is a plain '' and is not useful.
2025 firstmakefile (Unix.U):
2026 This variable defines the first file searched by make. On unix,
2027 it is makefile (then Makefile). On case-insensitive systems,
2028 it might be something else. This is only used to deal with
2029 convoluted make depend tricks.
2032 This variable is defined but not used by Configure.
2033 The value is a plain '' and is not useful.
2035 fpossize (fpossize.U):
2036 This variable contains the size of a fpostype in bytes.
2038 fpostype (fpostype.U):
2039 This variable defines Fpos_t to be something like fpos_t, long,
2040 uint, or whatever type is used to declare file positions in libc.
2042 freetype (mallocsrc.U):
2043 This variable contains the return type of free(). It is usually
2044 void, but occasionally int.
2047 This variable contains the command used by Configure
2048 to copy files from the target host. Useful and available
2049 only during Perl build.
2050 The string ':' if not cross-compiling.
2053 This variable contains the full pathname to 'ar', whether or
2054 not the user has specified 'portability'. This is only used
2058 This variable contains the full pathname to 'csh', whether or
2059 not the user has specified 'portability'. This is only used
2060 in the compiled C program, and we assume that all systems which
2061 can share this executable will have the same full pathname to
2064 full_sed (Loc_sed.U):
2065 This variable contains the full pathname to 'sed', whether or
2066 not the user has specified 'portability'. This is only used
2067 in the compiled C program, and we assume that all systems which
2068 can share this executable will have the same full pathname to
2071 gccosandvers (gccvers.U):
2072 If GNU cc (gcc) is used, this variable the operating system and
2073 version used to compile the gcc. It is set to '' if not gcc,
2074 or if nothing useful can be parsed as the os version.
2076 gccversion (gccvers.U):
2077 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2078 indicate whether the compiler is version 1 or 2. This is used in
2079 setting some of the default cflags. It is set to '' if not gcc.
2082 This variable contains the format string used for printing a Gid_t.
2084 gidsign (gidsign.U):
2085 This variable contains the signedness of a gidtype.
2086 1 for unsigned, -1 for signed.
2088 gidsize (gidsize.U):
2089 This variable contains the size of a gidtype in bytes.
2091 gidtype (gidtype.U):
2092 This variable defines Gid_t to be something like gid_t, int,
2093 ushort, or whatever type is used to declare the return type
2094 of getgid(). Typically, it is the type of group ids in the kernel.
2097 This variable holds the general path (space-separated) used to
2098 find libraries. It may contain directories that do not exist on
2099 this platform, libpth is the cleaned-up version.
2102 This variable is used internally by Configure to determine the
2103 full pathname (if any) of the gmake program. After Configure runs,
2104 the value is reset to a plain "gmake" and is not useful.
2107 This variable is used internally by Configure to determine the
2108 full pathname (if any) of the grep program. After Configure runs,
2109 the value is reset to a plain "grep" and is not useful.
2112 This variable contains a command that produces the text of the
2113 /etc/group file. This is normally "cat /etc/group", but can be
2114 "ypcat group" when NIS is used.
2115 On some systems, such as os390, there may be no equivalent
2116 command, in which case this variable is unset.
2118 groupstype (groupstype.U):
2119 This variable defines Groups_t to be something like gid_t, int,
2120 ushort, or whatever type is used for the second argument to
2121 getgroups() and setgroups(). Usually, this is the same as
2122 gidtype (gid_t), but sometimes it isn't.
2125 This variable is used internally by Configure to determine the
2126 full pathname (if any) of the gzip program. After Configure runs,
2127 the value is reset to a plain "gzip" and is not useful.
2129 h_fcntl (h_fcntl.U):
2130 This is variable gets set in various places to tell i_fcntl that
2131 <fcntl.h> should be included.
2133 h_sysfile (h_sysfile.U):
2134 This is variable gets set in various places to tell i_sys_file that
2135 <sys/file.h> should be included.
2138 Gives the type of hints used for previous answers. May be one of
2139 "default", "recommended" or "previous".
2142 This variable contains a command that produces the text of the
2143 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2144 "ypcat hosts" when NIS is used.
2145 On some systems, such as os390, there may be no equivalent
2146 command, in which case this variable is unset.
2149 This variable is the size of an I16 in bytes.
2152 This variable contains the C type used for Perl's I16.
2155 This variable is the size of an I32 in bytes.
2158 This variable contains the C type used for Perl's I32.
2161 This variable is the size of an I64 in bytes.
2164 This variable contains the C type used for Perl's I64.
2167 This variable is the size of an I8 in bytes.
2170 This variable contains the C type used for Perl's I8.
2172 i_arpainet (i_arpainet.U):
2173 This variable conditionally defines the I_ARPA_INET symbol,
2174 and indicates whether a C program should include <arpa/inet.h>.
2176 i_bsdioctl (i_sysioctl.U):
2177 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2178 indicates to the C program that <sys/bsdioctl.h> exists and should
2182 This variable conditionally defines the I_DB symbol, and indicates
2183 whether a C program may include Berkeley's DB include file <db.h>.
2186 This variable conditionally defines the I_DBM symbol, which
2187 indicates to the C program that <dbm.h> exists and should
2190 i_dirent (i_dirent.U):
2191 This variable conditionally defines I_DIRENT, which indicates
2192 to the C program that it should include <dirent.h>.
2195 This variable conditionally defines the I_DLD symbol, which
2196 indicates to the C program that <dld.h> (GNU dynamic loading)
2197 exists and should be included.
2199 i_dlfcn (i_dlfcn.U):
2200 This variable conditionally defines the I_DLFCN symbol, which
2201 indicates to the C program that <dlfcn.h> exists and should
2204 i_fcntl (i_fcntl.U):
2205 This variable controls the value of I_FCNTL (which tells
2206 the C program to include <fcntl.h>).
2208 i_float (i_float.U):
2209 This variable conditionally defines the I_FLOAT symbol, and indicates
2210 whether a C program may include <float.h> to get symbols like DBL_MAX
2211 or DBL_MIN, i.e. machine dependent floating point values.
2214 This variable conditionally defines the I_FP symbol, and indicates
2215 whether a C program should include <fp.h>.
2217 i_fp_class (i_fp_class.U):
2218 This variable conditionally defines the I_FP_CLASS symbol, and indicates
2219 whether a C program should include <fp_class.h>.
2222 This variable conditionally defines the I_GDBM symbol, which
2223 indicates to the C program that <gdbm.h> exists and should
2227 This variable conditionally defines the I_GRP symbol, and indicates
2228 whether a C program should include <grp.h>.
2230 i_ieeefp (i_ieeefp.U):
2231 This variable conditionally defines the I_IEEEFP symbol, and indicates
2232 whether a C program should include <ieeefp.h>.
2234 i_inttypes (i_inttypes.U):
2235 This variable conditionally defines the I_INTTYPES symbol,
2236 and indicates whether a C program should include <inttypes.h>.
2238 i_langinfo (i_langinfo.U):
2239 This variable conditionally defines the I_LANGINFO symbol,
2240 and indicates whether a C program should include <langinfo.h>.
2242 i_libutil (i_libutil.U):
2243 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2244 whether a C program should include <libutil.h>.
2246 i_limits (i_limits.U):
2247 This variable conditionally defines the I_LIMITS symbol, and indicates
2248 whether a C program may include <limits.h> to get symbols like WORD_BIT
2251 i_locale (i_locale.U):
2252 This variable conditionally defines the I_LOCALE symbol,
2253 and indicates whether a C program should include <locale.h>.
2255 i_machcthr (i_machcthr.U):
2256 This variable conditionally defines the I_MACH_CTHREADS symbol,
2257 and indicates whether a C program should include <mach/cthreads.h>.
2259 i_malloc (i_malloc.U):
2260 This variable conditionally defines the I_MALLOC symbol, and indicates
2261 whether a C program should include <malloc.h>.
2264 This variable conditionally defines the I_MATH symbol, and indicates
2265 whether a C program may include <math.h>.
2267 i_memory (i_memory.U):
2268 This variable conditionally defines the I_MEMORY symbol, and indicates
2269 whether a C program should include <memory.h>.
2271 i_mntent (i_mntent.U):
2272 This variable conditionally defines the I_MNTENT symbol, and indicates
2273 whether a C program should include <mntent.h>.
2276 This variable conditionally defines the I_NDBM symbol, which
2277 indicates to the C program that <ndbm.h> exists and should
2280 i_netdb (i_netdb.U):
2281 This variable conditionally defines the I_NETDB symbol, and indicates
2282 whether a C program should include <netdb.h>.
2284 i_neterrno (i_neterrno.U):
2285 This variable conditionally defines the I_NET_ERRNO symbol, which
2286 indicates to the C program that <net/errno.h> exists and should
2289 i_netinettcp (i_netinettcp.U):
2290 This variable conditionally defines the I_NETINET_TCP symbol,
2291 and indicates whether a C program should include <netinet/tcp.h>.
2294 This variable conditionally defines I_NETINET_IN, which indicates
2295 to the C program that it should include <netinet/in.h>. Otherwise,
2296 you may try <sys/in.h>.
2299 This variable conditionally defines the I_POLL symbol, and indicates
2300 whether a C program should include <poll.h>.
2303 This variable conditionally defines the I_PROT symbol, and indicates
2304 whether a C program should include <prot.h>.
2306 i_pthread (i_pthread.U):
2307 This variable conditionally defines the I_PTHREAD symbol,
2308 and indicates whether a C program should include <pthread.h>.
2311 This variable conditionally defines I_PWD, which indicates
2312 to the C program that it should include <pwd.h>.
2314 i_rpcsvcdbm (i_dbm.U):
2315 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2316 indicates to the C program that <rpcsvc/dbm.h> exists and should
2317 be included. Some System V systems might need this instead of <dbm.h>.
2320 This variable conditionally defines the I_SFIO symbol,
2321 and indicates whether a C program should include <sfio.h>.
2323 i_sgtty (i_termio.U):
2324 This variable conditionally defines the I_SGTTY symbol, which
2325 indicates to the C program that it should include <sgtty.h> rather
2328 i_shadow (i_shadow.U):
2329 This variable conditionally defines the I_SHADOW symbol, and indicates
2330 whether a C program should include <shadow.h>.
2332 i_socks (i_socks.U):
2333 This variable conditionally defines the I_SOCKS symbol, and indicates
2334 whether a C program should include <socks.h>.
2336 i_stdarg (i_varhdr.U):
2337 This variable conditionally defines the I_STDARG symbol, which
2338 indicates to the C program that <stdarg.h> exists and should
2341 i_stddef (i_stddef.U):
2342 This variable conditionally defines the I_STDDEF symbol, which
2343 indicates to the C program that <stddef.h> exists and should
2346 i_stdlib (i_stdlib.U):
2347 This variable conditionally defines the I_STDLIB symbol, which
2348 indicates to the C program that <stdlib.h> exists and should
2351 i_string (i_string.U):
2352 This variable conditionally defines the I_STRING symbol, which
2353 indicates that <string.h> should be included rather than <strings.h>.
2355 i_sunmath (i_sunmath.U):
2356 This variable conditionally defines the I_SUNMATH symbol, and indicates
2357 whether a C program should include <sunmath.h>.
2359 i_sysaccess (i_sysaccess.U):
2360 This variable conditionally defines the I_SYS_ACCESS symbol,
2361 and indicates whether a C program should include <sys/access.h>.
2363 i_sysdir (i_sysdir.U):
2364 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2365 whether a C program should include <sys/dir.h>.
2367 i_sysfile (i_sysfile.U):
2368 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2369 whether a C program should include <sys/file.h> to get R_OK and friends.
2371 i_sysfilio (i_sysioctl.U):
2372 This variable conditionally defines the I_SYS_FILIO symbol, which
2373 indicates to the C program that <sys/filio.h> exists and should
2374 be included in preference to <sys/ioctl.h>.
2377 This variable conditionally defines I_SYS_IN, which indicates
2378 to the C program that it should include <sys/in.h> instead of
2381 i_sysioctl (i_sysioctl.U):
2382 This variable conditionally defines the I_SYS_IOCTL symbol, which
2383 indicates to the C program that <sys/ioctl.h> exists and should
2386 i_syslog (i_syslog.U):
2387 This variable conditionally defines the I_SYSLOG symbol,
2388 and indicates whether a C program should include <syslog.h>.
2390 i_sysmman (i_sysmman.U):
2391 This variable conditionally defines the I_SYS_MMAN symbol, and
2392 indicates whether a C program should include <sys/mman.h>.
2394 i_sysmode (i_sysmode.U):
2395 This variable conditionally defines the I_SYSMODE symbol,
2396 and indicates whether a C program should include <sys/mode.h>.
2398 i_sysmount (i_sysmount.U):
2399 This variable conditionally defines the I_SYSMOUNT symbol,
2400 and indicates whether a C program should include <sys/mount.h>.
2402 i_sysndir (i_sysndir.U):
2403 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2404 whether a C program should include <sys/ndir.h>.
2406 i_sysparam (i_sysparam.U):
2407 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2408 whether a C program should include <sys/param.h>.
2410 i_sysresrc (i_sysresrc.U):
2411 This variable conditionally defines the I_SYS_RESOURCE symbol,
2412 and indicates whether a C program should include <sys/resource.h>.
2414 i_syssecrt (i_syssecrt.U):
2415 This variable conditionally defines the I_SYS_SECURITY symbol,
2416 and indicates whether a C program should include <sys/security.h>.
2418 i_sysselct (i_sysselct.U):
2419 This variable conditionally defines I_SYS_SELECT, which indicates
2420 to the C program that it should include <sys/select.h> in order to
2421 get the definition of struct timeval.
2423 i_syssockio (i_sysioctl.U):
2424 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2425 C program that socket ioctl codes may be found in <sys/sockio.h>
2426 instead of <sys/ioctl.h>.
2428 i_sysstat (i_sysstat.U):
2429 This variable conditionally defines the I_SYS_STAT symbol,
2430 and indicates whether a C program should include <sys/stat.h>.
2432 i_sysstatfs (i_sysstatfs.U):
2433 This variable conditionally defines the I_SYSSTATFS symbol,
2434 and indicates whether a C program should include <sys/statfs.h>.
2436 i_sysstatvfs (i_sysstatvfs.U):
2437 This variable conditionally defines the I_SYSSTATVFS symbol,
2438 and indicates whether a C program should include <sys/statvfs.h>.
2440 i_systime (i_time.U):
2441 This variable conditionally defines I_SYS_TIME, which indicates
2442 to the C program that it should include <sys/time.h>.
2444 i_systimek (i_time.U):
2445 This variable conditionally defines I_SYS_TIME_KERNEL, which
2446 indicates to the C program that it should include <sys/time.h>
2447 with KERNEL defined.
2449 i_systimes (i_systimes.U):
2450 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2451 whether a C program should include <sys/times.h>.
2453 i_systypes (i_systypes.U):
2454 This variable conditionally defines the I_SYS_TYPES symbol,
2455 and indicates whether a C program should include <sys/types.h>.
2457 i_sysuio (i_sysuio.U):
2458 This variable conditionally defines the I_SYSUIO symbol, and indicates
2459 whether a C program should include <sys/uio.h>.
2461 i_sysun (i_sysun.U):
2462 This variable conditionally defines I_SYS_UN, which indicates
2463 to the C program that it should include <sys/un.h> to get UNIX
2464 domain socket definitions.
2466 i_sysutsname (i_sysutsname.U):
2467 This variable conditionally defines the I_SYSUTSNAME symbol,
2468 and indicates whether a C program should include <sys/utsname.h>.
2470 i_sysvfs (i_sysvfs.U):
2471 This variable conditionally defines the I_SYSVFS symbol,
2472 and indicates whether a C program should include <sys/vfs.h>.
2474 i_syswait (i_syswait.U):
2475 This variable conditionally defines I_SYS_WAIT, which indicates
2476 to the C program that it should include <sys/wait.h>.
2478 i_termio (i_termio.U):
2479 This variable conditionally defines the I_TERMIO symbol, which
2480 indicates to the C program that it should include <termio.h> rather
2483 i_termios (i_termio.U):
2484 This variable conditionally defines the I_TERMIOS symbol, which
2485 indicates to the C program that the POSIX <termios.h> file is
2489 This variable conditionally defines I_TIME, which indicates
2490 to the C program that it should include <time.h>.
2492 i_unistd (i_unistd.U):
2493 This variable conditionally defines the I_UNISTD symbol, and indicates
2494 whether a C program should include <unistd.h>.
2496 i_ustat (i_ustat.U):
2497 This variable conditionally defines the I_USTAT symbol, and indicates
2498 whether a C program should include <ustat.h>.
2500 i_utime (i_utime.U):
2501 This variable conditionally defines the I_UTIME symbol, and indicates
2502 whether a C program should include <utime.h>.
2504 i_values (i_values.U):
2505 This variable conditionally defines the I_VALUES symbol, and indicates
2506 whether a C program may include <values.h> to get symbols like MAXLONG
2509 i_varargs (i_varhdr.U):
2510 This variable conditionally defines I_VARARGS, which indicates
2511 to the C program that it should include <varargs.h>.
2513 i_varhdr (i_varhdr.U):
2514 Contains the name of the header to be included to get va_dcl definition.
2515 Typically one of varargs.h or stdarg.h.
2517 i_vfork (i_vfork.U):
2518 This variable conditionally defines the I_VFORK symbol, and indicates
2519 whether a C program should include vfork.h.
2521 ignore_versioned_solibs (libs.U):
2522 This variable should be non-empty if non-versioned shared
2523 libraries (libfoo.so.x.y) are to be ignored (because they
2524 cannot be linked against).
2526 inc_version_list (inc_version_list.U):
2527 This variable specifies the list of subdirectories in over
2528 which perl.c:incpush() and lib/lib.pm will automatically
2529 search when adding directories to @INC. The elements in
2530 the list are separated by spaces. This is only useful
2531 if you have a perl library directory tree structured like the
2532 default one. See INSTALL for how this works. The versioned
2533 site_perl directory was introduced in 5.005, so that is the
2534 lowest possible value.
2536 inc_version_list_init (inc_version_list.U):
2537 This variable holds the same list as inc_version_list, but
2538 each item is enclosed in double quotes and separated by commas,
2539 suitable for use in the PERL_INC_VERSION_LIST initialization.
2542 This variable must preceed the normal include path to get hte
2543 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2544 Value can be "" or "/bsd43" on mips.
2547 This variable is defined but not used by Configure.
2548 The value is a plain '' and is not useful.
2550 installarchlib (archlib.U):
2551 This variable is really the same as archlibexp but may differ on
2552 those systems using AFS. For extra portability, only this variable
2553 should be used in makefiles.
2556 This variable is the same as binexp unless AFS is running in which case
2557 the user is explicitely prompted for it. This variable should always
2558 be used in your makefiles for maximum portability.
2560 installman1dir (man1dir.U):
2561 This variable is really the same as man1direxp, unless you are using
2562 AFS in which case it points to the read/write location whereas
2563 man1direxp only points to the read-only access location. For extra
2564 portability, you should only use this variable within your makefiles.
2566 installman3dir (man3dir.U):
2567 This variable is really the same as man3direxp, unless you are using
2568 AFS in which case it points to the read/write location whereas
2569 man3direxp only points to the read-only access location. For extra
2570 portability, you should only use this variable within your makefiles.
2572 installprefix (installprefix.U):
2573 This variable holds the name of the directory below which
2574 "make install" will install the package. For most users, this
2575 is the same as prefix. However, it is useful for
2576 installing the software into a different (usually temporary)
2577 location after which it can be bundled up and moved somehow
2578 to the final location specified by prefix.
2580 installprefixexp (installprefix.U):
2581 This variable holds the full absolute path of installprefix
2582 with all ~-expansion done.
2584 installprivlib (privlib.U):
2585 This variable is really the same as privlibexp but may differ on
2586 those systems using AFS. For extra portability, only this variable
2587 should be used in makefiles.
2589 installscript (scriptdir.U):
2590 This variable is usually the same as scriptdirexp, unless you are on
2591 a system running AFS, in which case they may differ slightly. You
2592 should always use this variable within your makefiles for portability.
2594 installsitearch (sitearch.U):
2595 This variable is really the same as sitearchexp but may differ on
2596 those systems using AFS. For extra portability, only this variable
2597 should be used in makefiles.
2599 installsitebin (sitebin.U):
2600 This variable is usually the same as sitebinexp, unless you are on
2601 a system running AFS, in which case they may differ slightly. You
2602 should always use this variable within your makefiles for portability.
2604 installsitelib (sitelib.U):
2605 This variable is really the same as sitelibexp but may differ on
2606 those systems using AFS. For extra portability, only this variable
2607 should be used in makefiles.
2609 installstyle (installstyle.U):
2610 This variable describes the "style" of the perl installation.
2611 This is intended to be useful for tools that need to
2612 manipulate entire perl distributions. Perl itself doesn't use
2613 this to find its libraries -- the library directories are
2614 stored directly in Config.pm. Currently, there are only two
2615 styles: "lib" and "lib/perl5". The default library locations
2616 (e.g. privlib, sitelib) are either $prefix/lib or
2617 $prefix/lib/perl5. The former is useful if $prefix is a
2618 directory dedicated to perl (e.g. /opt/perl), while the latter
2619 is useful if $prefix is shared by many packages, e.g. if
2621 This may later be extended to include other information, so
2622 be careful with pattern-matching on the results.
2623 For compatibility with perl5.005 and earlier, the default
2624 setting is based on whether or not $prefix contains the string
2627 installusrbinperl (instubperl.U):
2628 This variable tells whether Perl should be installed also as
2629 /usr/bin/perl in addition to
2632 installvendorarch (vendorarch.U):
2633 This variable is really the same as vendorarchexp but may differ on
2634 those systems using AFS. For extra portability, only this variable
2635 should be used in makefiles.
2637 installvendorbin (vendorbin.U):
2638 This variable is really the same as vendorbinexp but may differ on
2639 those systems using AFS. For extra portability, only this variable
2640 should be used in makefiles.
2642 installvendorlib (vendorlib.U):
2643 This variable is really the same as vendorlibexp but may differ on
2644 those systems using AFS. For extra portability, only this variable
2645 should be used in makefiles.
2647 intsize (intsize.U):
2648 This variable contains the value of the INTSIZE symbol, which
2649 indicates to the C program how many bytes there are in an int.
2651 issymlink (issymlink.U):
2652 This variable holds the test command to test for a symbolic link
2653 (if they are supported). Typical values include 'test -h' and
2656 ivdformat (perlxvf.U):
2657 This variable contains the format string used for printing
2658 a Perl IV as a signed decimal integer.
2661 This variable is the size of an IV in bytes.
2664 This variable contains the C type used for Perl's IV.
2666 known_extensions (Extensions.U):
2667 This variable holds a list of all XS extensions included in
2671 This variable is defined but not used by Configure.
2672 The value is a plain '' and is not useful.
2675 This variable indicates the program to be used to link
2676 libraries for dynamic loading. On some systems, it is 'ld'.
2677 On ELF systems, it should be $cc. Mostly, we'll try to respect
2678 the hint file setting.
2680 lddlflags (dlsrc.U):
2681 This variable contains any special flags that might need to be
2682 passed to $ld to create a shared library suitable for dynamic
2683 loading. It is up to the makefile to use it. For hpux, it
2684 should be '-b'. For sunos 4.1, it is empty.
2686 ldflags (ccflags.U):
2687 This variable contains any additional C loader flags desired by
2688 the user. It is up to the Makefile to use this.
2690 ldflags_uselargefiles (uselfs.U):
2691 This variable contains the loader flags needed by large file builds
2692 and added to ldflags by hints files.
2694 ldlibpthname (libperl.U):
2695 This variable holds the name of the shared library
2696 search path, often LD_LIBRARY_PATH. To get an empty
2697 string, the hints file must set this to 'none'.
2700 This variable is used internally by Configure to determine the
2701 full pathname (if any) of the less program. After Configure runs,
2702 the value is reset to a plain "less" and is not useful.
2705 This is an old synonym for _a.
2708 This variable contains the location of the C library.
2710 libperl (libperl.U):
2711 The perl executable is obtained by linking perlmain.c with
2712 libperl, any static extensions (usually just DynaLoader),
2713 and any other libraries needed on this system. libperl
2714 is usually libperl.a, but can also be libperl.so.xxx if
2715 the user wishes to build a perl executable with a shared
2719 This variable holds the general path (space-separated) used to find
2720 libraries. It is intended to be used by other units.
2723 This variable holds the additional libraries we want to use.
2724 It is up to the Makefile to deal with it.
2727 This variable holds the directory names aka dirnames of the libraries
2728 we found and accepted, duplicates are removed.
2731 This variable holds the filenames aka basenames of the libraries
2732 we found and accepted.
2735 This variable holds the full pathnames of the libraries
2736 we found and accepted.
2739 This variable holds the directory names probed for libraries.
2741 libswanted (Myinit.U):
2742 This variable holds a list of all the libraries we want to
2743 search. The order is chosen to pick up the c library
2744 ahead of ucb or bsd libraries for SVR4.
2746 libswanted_uselargefiles (uselfs.U):
2747 This variable contains the libraries needed by large file builds
2748 and added to ldflags by hints files. It is a space separated list
2749 of the library names without the "lib" prefix or any suffix, just
2753 This variable is defined but not used by Configure.
2754 The value is a plain '' and is not useful.
2757 This variable is defined but not used by Configure.
2758 The value is a plain '' and is not useful.
2760 lkflags (ccflags.U):
2761 This variable contains any additional C partial linker flags desired by
2762 the user. It is up to the Makefile to use this.
2765 This variable is used internally by Configure to determine the
2766 full pathname (if any) of the ln program. After Configure runs,
2767 the value is reset to a plain "ln" and is not useful.
2770 This variable holds the name of the command to make
2771 symbolic links (if they are supported). It can be used
2772 in the Makefile. It is either 'ln -s' or 'ln'
2774 locincpth (ccflags.U):
2775 This variable contains a list of additional directories to be
2776 searched by the compiler. The appropriate '-I' directives will
2777 be added to ccflags. This is intended to simplify setting
2778 local directories from the Configure command line.
2779 It's not much, but it parallels the loclibpth stuff in libpth.U.
2781 loclibpth (libpth.U):
2782 This variable holds the paths (space-separated) used to find local
2783 libraries. It is prepended to libpth, and is intended to be easily
2784 set from the command line.
2786 longdblsize (d_longdbl.U):
2787 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2788 indicates to the C program how many bytes there are in a long double,
2789 if this system supports long doubles.
2791 longlongsize (d_longlong.U):
2792 This variable contains the value of the LONGLONGSIZE symbol, which
2793 indicates to the C program how many bytes there are in a long long,
2794 if this system supports long long.
2796 longsize (intsize.U):
2797 This variable contains the value of the LONGSIZE symbol, which
2798 indicates to the C program how many bytes there are in a long.
2801 This variable is defined but not used by Configure.
2802 The value is a plain '' and is not useful.
2805 This variable is defined but not used by Configure.
2806 The value is a plain '' and is not useful.
2809 This variable is used internally by Configure to determine the
2810 full pathname (if any) of the ls program. After Configure runs,
2811 the value is reset to a plain "ls" and is not useful.
2813 lseeksize (lseektype.U):
2814 This variable defines lseektype to be something like off_t, long,
2815 or whatever type is used to declare lseek offset's type in the
2816 kernel (which also appears to be lseek's return type).
2818 lseektype (lseektype.U):
2819 This variable defines lseektype to be something like off_t, long,
2820 or whatever type is used to declare lseek offset's type in the
2821 kernel (which also appears to be lseek's return type).
2824 This variable is defined but not used by Configure.
2825 The value is a plain '' and is not useful.
2828 This variable is defined but not used by Configure.
2829 The value is a plain '' and is not useful.
2832 This variable is used internally by Configure to determine the
2833 full pathname (if any) of the make program. After Configure runs,
2834 the value is reset to a plain "make" and is not useful.
2836 make_set_make (make.U):
2837 Some versions of 'make' set the variable MAKE. Others do not.
2838 This variable contains the string to be included in Makefile.SH
2839 so that MAKE is set if needed, and not if not needed.
2840 Possible values are:
2841 make_set_make='#' # If your make program handles this for you,
2842 make_set_make="MAKE=$make" # if it doesn't.
2843 I used a comment character so that we can distinguish a
2844 'set' value (from a previous config.sh or Configure '-D' option)
2845 from an uncomputed value.
2847 mallocobj (mallocsrc.U):
2848 This variable contains the name of the malloc.o that this package
2849 generates, if that malloc.o is preferred over the system malloc.
2850 Otherwise the value is null. This variable is intended for generating
2851 Makefiles. See mallocsrc.
2853 mallocsrc (mallocsrc.U):
2854 This variable contains the name of the malloc.c that comes with
2855 the package, if that malloc.c is preferred over the system malloc.
2856 Otherwise the value is null. This variable is intended for generating
2859 malloctype (mallocsrc.U):
2860 This variable contains the kind of ptr returned by malloc and realloc.
2862 man1dir (man1dir.U):
2863 This variable contains the name of the directory in which manual
2864 source pages are to be put. It is the responsibility of the
2865 Makefile.SH to get the value of this into the proper command.
2866 You must be prepared to do the ~name expansion yourself.
2868 man1direxp (man1dir.U):
2869 This variable is the same as the man1dir variable, but is filename
2870 expanded at configuration time, for convenient use in makefiles.
2872 man1ext (man1dir.U):
2873 This variable contains the extension that the manual page should
2874 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2877 man3dir (man3dir.U):
2878 This variable contains the name of the directory in which manual
2879 source pages are to be put. It is the responsibility of the
2880 Makefile.SH to get the value of this into the proper command.
2881 You must be prepared to do the ~name expansion yourself.
2883 man3direxp (man3dir.U):
2884 This variable is the same as the man3dir variable, but is filename
2885 expanded at configuration time, for convenient use in makefiles.
2887 man3ext (man3dir.U):
2888 This variable contains the extension that the manual page should
2889 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2893 This variable is used internally by Configure to determine the
2894 full pathname (if any) of the Mcc program. After Configure runs,
2895 the value is reset to a plain "Mcc" and is not useful.
2897 mips_type (usrinc.U):
2898 This variable holds the environment type for the mips system.
2899 Possible values are "BSD 4.3" and "System V".
2902 This variable is used internally by Configure to determine the
2903 full pathname (if any) of the mkdir program. After Configure runs,
2904 the value is reset to a plain "mkdir" and is not useful.
2906 mmaptype (d_mmap.U):
2907 This symbol contains the type of pointer returned by mmap()
2908 (and simultaneously the type of the first argument).
2909 It can be 'void *' or 'caddr_t'.
2911 modetype (modetype.U):
2912 This variable defines modetype to be something like mode_t,
2913 int, unsigned short, or whatever type is used to declare file
2914 modes for system calls.
2917 This variable is used internally by Configure to determine the
2918 full pathname (if any) of the more program. After Configure runs,
2919 the value is reset to a plain "more" and is not useful.
2921 multiarch (multiarch.U):
2922 This variable conditionally defines the MULTIARCH symbol
2923 which signifies the presence of multiplatform files.
2924 This is normally set by hints files.
2927 This variable is defined but not used by Configure.
2928 The value is a plain '' and is not useful.
2930 myarchname (archname.U):
2931 This variable holds the architecture name computed by Configure in
2932 a previous run. It is not intended to be perused by any user and
2933 should never be set in a hint file.
2935 mydomain (myhostname.U):
2936 This variable contains the eventual value of the MYDOMAIN symbol,
2937 which is the domain of the host the program is going to run on.
2938 The domain must be appended to myhostname to form a complete host name.
2939 The dot comes with mydomain, and need not be supplied by the program.
2941 myhostname (myhostname.U):
2942 This variable contains the eventual value of the MYHOSTNAME symbol,
2943 which is the name of the host the program is going to run on.
2944 The domain is not kept with hostname, but must be gotten from mydomain.
2945 The dot comes with mydomain, and need not be supplied by the program.
2947 myuname (Oldconfig.U):
2948 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2949 pseudo variables assignments in the output are stripped, thank you. The
2950 whole thing is then lower-cased.
2953 This variable contains the '-n' flag if that is what causes the echo
2954 command to suppress newline. Otherwise it is null. Correct usage is
2955 $echo $n "prompt for a question: $c".
2957 need_va_copy (need_va_copy.U):
2958 This symbol, if defined, indicates that the system stores
2959 the variable argument list datatype, va_list, in a format
2960 that cannot be copied by simple assignment, so that some
2961 other means must be used when copying is required.
2962 As such systems vary in their provision (or non-provision)
2963 of copying mechanisms, handy.h defines a platform-
2964 independent macro, Perl_va_copy(src, dst), to do the job.
2966 netdb_hlen_type (netdbtype.U):
2967 This variable holds the type used for the 2nd argument to
2968 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2969 This is only useful if you have gethostbyaddr(), naturally.
2971 netdb_host_type (netdbtype.U):
2972 This variable holds the type used for the 1st argument to
2973 gethostbyaddr(). Usually, this is char * or void *, possibly
2974 with or without a const prefix.
2975 This is only useful if you have gethostbyaddr(), naturally.
2977 netdb_name_type (netdbtype.U):
2978 This variable holds the type used for the argument to
2979 gethostbyname(). Usually, this is char * or const char *.
2980 This is only useful if you have gethostbyname(), naturally.
2982 netdb_net_type (netdbtype.U):
2983 This variable holds the type used for the 1st argument to
2984 getnetbyaddr(). Usually, this is int or long.
2985 This is only useful if you have getnetbyaddr(), naturally.
2988 This variable is used internally by Configure to determine the
2989 full pathname (if any) of the nm program. After Configure runs,
2990 the value is reset to a plain "nm" and is not useful.
2993 This variable holds the options that may be necessary for nm.
2995 nm_so_opt (usenm.U):
2996 This variable holds the options that may be necessary for nm
2997 to work on a shared library but that can not be used on an
2998 archive library. Currently, this is only used by Linux, where
2999 nm --dynamic is *required* to get symbols from an ELF library which
3000 has been stripped, but nm --dynamic is *fatal* on an archive library.
3001 Maybe Linux should just always set usenm=false.
3003 nonxs_ext (Extensions.U):
3004 This variable holds a list of all non-xs extensions included
3005 in the package. All of them will be built.
3008 This variable is used internally by Configure to determine the
3009 full pathname (if any) of the nroff program. After Configure runs,
3010 the value is reset to a plain "nroff" and is not useful.
3012 nveformat (perlxvf.U):
3013 This variable contains the format string used for printing
3014 a Perl NV using %e-ish floating point format.
3016 nvEUformat (perlxvf.U):
3017 This variable contains the format string used for printing
3018 a Perl NV using %E-ish floating point format.
3020 nvfformat (perlxvf.U):
3021 This variable confains the format string used for printing
3022 a Perl NV using %f-ish floating point format.
3024 nvFUformat (perlxvf.U):
3025 This variable confains the format string used for printing
3026 a Perl NV using %F-ish floating point format.
3028 nvgformat (perlxvf.U):
3029 This variable contains the format string used for printing
3030 a Perl NV using %g-ish floating point format.
3032 nvGUformat (perlxvf.U):
3033 This variable contains the format string used for printing
3034 a Perl NV using %G-ish floating point format.
3037 This variable is the size of an NV in bytes.
3040 This variable contains the C type used for Perl's NV.
3042 o_nonblock (nblock_io.U):
3043 This variable bears the symbol value to be used during open() or fcntl()
3044 to turn on non-blocking I/O for a file descriptor. If you wish to switch
3045 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
3046 but that is only supported by some devices.
3049 This is an old synonym for _o.
3051 old_pthread_create_joinable (d_pthrattrj.U):
3052 This variable defines the constant to use for creating joinable
3053 (aka undetached) pthreads. Unused if pthread.h defines
3054 PTHREAD_CREATE_JOINABLE. If used, possible values are
3055 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
3057 optimize (ccflags.U):
3058 This variable contains any optimizer/debugger flag that should be used.
3059 It is up to the Makefile to use it.
3061 orderlib (orderlib.U):
3062 This variable is "true" if the components of libraries must be ordered
3063 (with `lorder $* | tsort`) before placing them in an archive. Set to
3064 "false" if ranlib or ar can generate random libraries.
3066 osname (Oldconfig.U):
3067 This variable contains the operating system name (e.g. sunos,
3068 solaris, hpux, etc.). It can be useful later on for setting
3069 defaults. Any spaces are replaced with underscores. It is set
3070 to a null string if we can't figure it out.
3072 osvers (Oldconfig.U):
3073 This variable contains the operating system version (e.g.
3074 4.1.3, 5.2, etc.). It is primarily used for helping select
3075 an appropriate hints file, but might be useful elsewhere for
3076 setting defaults. It is set to '' if we can't figure it out.
3077 We try to be flexible about how much of the version number
3078 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3079 same for this package, hints files might just be os_4.0 or
3080 os_4.1, etc., not keeping separate files for each little release.
3082 otherlibdirs (otherlibdirs.U):
3083 This variable contains a colon-separated set of paths for the perl
3084 binary to search for additional library files or modules.
3085 These directories will be tacked to the end of @INC.
3086 Perl will automatically search below each path for version-
3087 and architecture-specific directories. See inc_version_list
3089 A value of ' ' means 'none' and is used to preserve this value
3090 for the next run through Configure.
3092 package (package.U):
3093 This variable contains the name of the package being constructed.
3094 It is primarily intended for the use of later Configure units.
3097 This variable contains the name of the preferred pager on the system.
3098 Usual values are (the full pathnames of) more, less, pg, or cat.
3101 This variable contains a command that produces the text of the
3102 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3103 "ypcat passwd" when NIS is used.
3104 On some systems, such as os390, there may be no equivalent
3105 command, in which case this variable is unset.
3107 patchlevel (patchlevel.U):
3108 The patchlevel level of this package.
3109 The value of patchlevel comes from the patchlevel.h file.
3110 In a version number such as 5.6.1, this is the "6".
3111 In patchlevel.h, this is referred to as "PERL_VERSION".
3114 This is an old synonym for p_ in Head.U, the character
3115 used to separate elements in the command shell search PATH.
3118 This variable contains the full path (if any) to a previously
3119 installed perl5.005 or later suitable for running the script
3120 to determine inc_version_list.
3123 This variable is defined but not used by Configure.
3124 The value is a plain '' and is not useful.
3126 perl_patchlevel (patchlevel.U):
3127 This is the Perl patch level, a numeric change identifier,
3128 as defined by whichever source code maintenance system
3129 is used to maintain the patches; currently Perforce.
3130 It does not correlate with the Perl version numbers or
3131 the maintenance versus development dichotomy except
3132 by also being increasing.
3134 PERL_REVISION (Oldsyms.U):
3135 In a Perl version number such as 5.6.2, this is the 5.
3136 This value is manually set in patchlevel.h
3138 PERL_SUBVERSION (Oldsyms.U):
3139 In a Perl version number such as 5.6.2, this is the 2.
3140 Values greater than 50 represent potentially unstable
3141 development subversions.
3142 This value is manually set in patchlevel.h
3144 PERL_VERSION (Oldsyms.U):
3145 In a Perl version number such as 5.6.2, this is the 6.
3146 This value is manually set in patchlevel.h
3148 perladmin (perladmin.U):
3149 Electronic mail address of the perl5 administrator.
3152 The list of libraries needed by Perl only (any libraries needed
3153 by extensions only will by dropped, if using dynamic loading).
3155 perlpath (perlpath.U):
3156 This variable contains the eventual value of the PERLPATH symbol,
3157 which contains the name of the perl interpreter to be used in
3158 shell scripts and in the "eval 'exec'" idiom.
3161 This variable is used internally by Configure to determine the
3162 full pathname (if any) of the pg program. After Configure runs,
3163 the value is reset to a plain "pg" and is not useful.
3165 phostname (myhostname.U):
3166 This variable contains the eventual value of the PHOSTNAME symbol,
3167 which is a command that can be fed to popen() to get the host name.
3168 The program should probably not presume that the domain is or isn't
3171 pidtype (pidtype.U):
3172 This variable defines PIDTYPE to be something like pid_t, int,
3173 ushort, or whatever type is used to declare process ids in the kernel.
3176 Holds the private path used by Configure to find out the libraries.
3177 Its value is prepend to libpth. This variable takes care of special
3178 machines, like the mips. Usually, it should be empty.
3180 pm_apiversion (xs_apiversion.U):
3181 This variable contains the version of the oldest perl
3182 compatible with the present perl. (That is, pure perl modules
3183 written for $pm_apiversion will still work for the current
3184 version). perl.c:incpush() and lib/lib.pm will automatically
3185 search in $sitelib for older directories across major versions
3186 back to pm_apiversion. This is only useful if you have a perl
3187 library directory tree structured like the default one. The
3188 versioned site_perl library was introduced in 5.005, so that's
3189 the default setting for this variable. It's hard to imagine
3190 it changing before Perl6. It is included here for symmetry
3191 with xs_apiveprsion -- the searching algorithms will
3192 (presumably) be similar.
3193 See the INSTALL file for how this works.
3196 This variable is defined but not used by Configure.
3197 The value is a plain '' and is not useful.
3200 This variable is defined but not used by Configure.
3201 The value is a plain '' and is not useful.
3204 This variable holds the name of the directory below which the
3205 user will install the package. Usually, this is /usr/local, and
3206 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3207 man pages in /usr/local/man, etc. It is only used to set defaults
3208 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3210 prefixexp (prefix.U):
3211 This variable holds the full absolute path of the directory below
3212 which the user will install the package. Derived from prefix.
3214 privlib (privlib.U):
3215 This variable contains the eventual value of the PRIVLIB symbol,
3216 which is the name of the private library for this package. It may
3217 have a ~ on the front. It is up to the makefile to eventually create
3218 this directory while performing installation (with ~ substitution).
3220 privlibexp (privlib.U):
3221 This variable is the ~name expanded version of privlib, so that you
3222 may use it directly in Makefiles or shell scripts.
3224 procselfexe (d_procselfexe.U):
3225 If d_procselfexe is defined, $procselfexe is the filename
3226 of the symbolic link pointing to the absolute pathname of
3227 the executing program.
3229 prototype (prototype.U):
3230 This variable holds the eventual value of CAN_PROTOTYPE, which
3231 indicates the C compiler can handle funciton prototypes.
3233 ptrsize (ptrsize.U):
3234 This variable contains the value of the PTRSIZE symbol, which
3235 indicates to the C program how many bytes there are in a pointer.
3237 quadkind (quadtype.U):
3238 This variable, if defined, encodes the type of a quad:
3239 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3241 quadtype (quadtype.U):
3242 This variable defines Quad_t to be something like long, int,
3243 long long, int64_t, or whatever type is used for 64-bit integers.
3245 randbits (randfunc.U):
3246 Indicates how many bits are produced by the function used to
3247 generate normalized random numbers.
3249 randfunc (randfunc.U):
3250 Indicates the name of the random number function to use.
3251 Values include drand48, random, and rand. In C programs,
3252 the 'Drand01' macro is defined to generate uniformly distributed
3253 random numbers over the range [0., 1.[ (see drand01 and nrand).
3255 randseedtype (randfunc.U):
3256 Indicates the type of the argument of the seedfunc.
3258 ranlib (orderlib.U):
3259 This variable is set to the pathname of the ranlib program, if it is
3260 needed to generate random libraries. Set to ":" if ar can generate
3261 random libraries or if random libraries are not supported
3263 rd_nodata (nblock_io.U):
3264 This variable holds the return code from read() when no data is
3265 present. It should be -1, but some systems return 0 when O_NDELAY is
3266 used, which is a shame because you cannot make the difference between
3267 no data and an EOF.. Sigh!
3269 revision (patchlevel.U):
3270 The value of revision comes from the patchlevel.h file.
3271 In a version number such as 5.6.1, this is the "5".
3272 In patchlevel.h, this is referred to as "PERL_REVISION".
3275 This variable is used internally by Configure to determine the
3276 full pathname (if any) of the rm program. After Configure runs,
3277 the value is reset to a plain "rm" and is not useful.
3280 This variable is defined but not used by Configure.
3281 The value is a plain '' and is not useful.
3284 This variable contains the command used by Configure
3285 to copy and execute a cross-compiled executable in the
3286 target host. Useful and available only during Perl build.
3287 Empty string '' if not cross-compiling.
3290 This variable contains 'true' or 'false' depending whether the
3291 nm extraction should be performed or not, according to the value
3292 of usenm and the flags on the Configure command line.
3294 sched_yield (d_pthread_y.U):
3295 This variable defines the way to yield the execution
3296 of the current thread.
3298 scriptdir (scriptdir.U):
3299 This variable holds the name of the directory in which the user wants
3300 to put publicly scripts for the package in question. It is either
3301 the same directory as for binaries, or a special one that can be
3302 mounted across different architectures, like /usr/share. Programs
3303 must be prepared to deal with ~name expansion.
3305 scriptdirexp (scriptdir.U):
3306 This variable is the same as scriptdir, but is filename expanded
3307 at configuration time, for programs not wanting to bother with it.
3310 This variable is used internally by Configure to determine the
3311 full pathname (if any) of the sed program. After Configure runs,
3312 the value is reset to a plain "sed" and is not useful.
3314 seedfunc (randfunc.U):
3315 Indicates the random number generating seed function.
3316 Values include srand48, srandom, and srand.
3318 selectminbits (selectminbits.U):
3319 This variable holds the minimum number of bits operated by select.
3320 That is, if you do select(n, ...), how many bits at least will be
3321 cleared in the masks if some activity is detected. Usually this
3322 is either n or 32*ceil(n/32), especially many little-endians do
3323 the latter. This is only useful if you have select(), naturally.
3325 selecttype (selecttype.U):
3326 This variable holds the type used for the 2nd, 3rd, and 4th
3327 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3328 is defined, and 'int *' otherwise. This is only useful if you
3329 have select(), naturally.
3332 This variable is defined but not used by Configure.
3333 The value is a plain '' and is not useful.
3336 This variable contains the full pathname of the shell used
3337 on this system to execute Bourne shell scripts. Usually, this will be
3338 /bin/sh, though it's possible that some systems will have /bin/ksh,
3339 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3341 This unit comes before Options.U, so you can't set sh with a '-D'
3342 option, though you can override this (and startsh)
3343 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3346 This variable is defined but not used by Configure.
3347 The value is a plain '' and is not useful.
3349 sharpbang (spitshell.U):
3350 This variable contains the string #! if this system supports that
3353 shmattype (d_shmat.U):
3354 This symbol contains the type of pointer returned by shmat().
3355 It can be 'void *' or 'char *'.
3357 shortsize (intsize.U):
3358 This variable contains the value of the SHORTSIZE symbol which
3359 indicates to the C program how many bytes there are in a short.
3361 shrpenv (libperl.U):
3362 If the user builds a shared libperl.so, then we need to tell the
3363 'perl' executable where it will be able to find the installed libperl.so.
3364 One way to do this on some systems is to set the environment variable
3365 LD_RUN_PATH to the directory that will be the final location of the
3366 shared libperl.so. The makefile can use this with something like
3367 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3369 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3372 See the main perl Makefile.SH for actual working usage.
3373 Alternatively, we might be able to use a command line option such
3374 as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
3375 $archlibexp/CORE (Linux).
3377 shsharp (spitshell.U):
3378 This variable tells further Configure units whether your sh can
3381 sig_count (sig_name.U):
3382 This variable holds a number larger than the largest valid
3383 signal number. This is usually the same as the NSIG macro.
3385 sig_name (sig_name.U):
3386 This variable holds the signal names, space separated. The leading
3387 SIG in signal name is removed. A ZERO is prepended to the
3388 list. This is currently not used.
3390 sig_name_init (sig_name.U):
3391 This variable holds the signal names, enclosed in double quotes and
3392 separated by commas, suitable for use in the SIG_NAME definition
3393 below. A "ZERO" is prepended to the list, and the list is
3394 terminated with a plain 0. The leading SIG in signal names
3395 is removed. See sig_num.
3397 sig_num (sig_name.U):
3398 This variable holds the signal numbers, space separated. A ZERO is
3399 prepended to the list (corresponding to the fake SIGZERO), and
3400 the list is terminated with a 0. Those numbers correspond to
3401 the value of the signal listed in the same place within the
3404 sig_num_init (sig_name.U):
3405 This variable holds the signal numbers, enclosed in double quotes and
3406 separated by commas, suitable for use in the SIG_NUM definition
3407 below. A "ZERO" is prepended to the list, and the list is
3408 terminated with a plain 0.
3410 sig_size (sig_name.U):
3411 This variable contains the number of elements of the sig_name
3412 and sig_num arrays, excluding the final NULL entry.
3414 signal_t (d_voidsig.U):
3415 This variable holds the type of the signal handler (void or int).
3417 sitearch (sitearch.U):
3418 This variable contains the eventual value of the SITEARCH symbol,
3419 which is the name of the private library for this package. It may
3420 have a ~ on the front. It is up to the makefile to eventually create
3421 this directory while performing installation (with ~ substitution).
3422 The standard distribution will put nothing in this directory.
3423 After perl has been installed, users may install their own local
3424 architecture-dependent modules in this directory with
3425 MakeMaker Makefile.PL
3426 or equivalent. See INSTALL for details.
3428 sitearchexp (sitearch.U):
3429 This variable is the ~name expanded version of sitearch, so that you
3430 may use it directly in Makefiles or shell scripts.
3432 sitebin (sitebin.U):
3433 This variable holds the name of the directory in which the user wants
3434 to put add-on publicly executable files for the package in question. It
3435 is most often a local directory such as /usr/local/bin. Programs using
3436 this variable must be prepared to deal with ~name substitution.
3437 The standard distribution will put nothing in this directory.
3438 After perl has been installed, users may install their own local
3439 executables in this directory with
3440 MakeMaker Makefile.PL
3441 or equivalent. See INSTALL for details.
3443 sitebinexp (sitebin.U):
3444 This is the same as the sitebin variable, but is filename expanded at
3445 configuration time, for use in your makefiles.
3447 sitelib (sitelib.U):
3448 This variable contains the eventual value of the SITELIB symbol,
3449 which is the name of the private library for this package. It may
3450 have a ~ on the front. It is up to the makefile to eventually create
3451 this directory while performing installation (with ~ substitution).
3452 The standard distribution will put nothing in this directory.
3453 After perl has been installed, users may install their own local
3454 architecture-independent modules in this directory with
3455 MakeMaker Makefile.PL
3456 or equivalent. See INSTALL for details.
3458 sitelib_stem (sitelib.U):
3459 This variable is $sitelibexp with any trailing version-specific component
3460 removed. The elements in inc_version_list (inc_version_list.U) can
3461 be tacked onto this variable to generate a list of directories to search.
3463 sitelibexp (sitelib.U):
3464 This variable is the ~name expanded version of sitelib, so that you
3465 may use it directly in Makefiles or shell scripts.
3467 siteprefix (siteprefix.U):
3468 This variable holds the full absolute path of the directory below
3469 which the user will install add-on packages.
3470 See INSTALL for usage and examples.
3472 siteprefixexp (siteprefix.U):
3473 This variable holds the full absolute path of the directory below
3474 which the user will install add-on packages. Derived from siteprefix.
3476 sizesize (sizesize.U):
3477 This variable contains the size of a sizetype in bytes.
3479 sizetype (sizetype.U):
3480 This variable defines sizetype to be something like size_t,
3481 unsigned long, or whatever type is used to declare length
3482 parameters for string functions.
3485 This variable is defined but not used by Configure.
3486 The value is a plain '' and is not useful.
3489 This variable is defined but not used by Configure.
3490 The value is a plain '' and is not useful.
3493 This variable holds the extension used to identify shared libraries
3494 (also known as shared objects) on the system. Usually set to 'so'.
3496 sockethdr (d_socket.U):
3497 This variable has any cpp '-I' flags needed for socket support.
3499 socketlib (d_socket.U):
3500 This variable has the names of any libraries needed for socket support.
3502 socksizetype (socksizetype.U):
3503 This variable holds the type used for the size argument
3504 for various socket calls like accept. Usual values include
3505 socklen_t, size_t, and int.
3508 This variable is used internally by Configure to determine the
3509 full pathname (if any) of the sort program. After Configure runs,
3510 the value is reset to a plain "sort" and is not useful.
3512 spackage (package.U):
3513 This variable contains the name of the package being constructed,
3514 with the first letter uppercased, i.e. suitable for starting
3517 spitshell (spitshell.U):
3518 This variable contains the command necessary to spit out a runnable
3519 shell on this system. It is either cat or a grep '-v' for # comments.
3521 sPRId64 (quadfio.U):
3522 This variable, if defined, contains the string used by stdio to
3523 format 64-bit decimal numbers (format 'd') for output.
3525 sPRIeldbl (longdblfio.U):
3526 This variable, if defined, contains the string used by stdio to
3527 format long doubles (format 'e') for output.
3529 sPRIEUldbl (longdblfio.U):
3530 This variable, if defined, contains the string used by stdio to
3531 format long doubles (format 'E') for output.
3532 The 'U' in the name is to separate this from sPRIeldbl so that even
3533 case-blind systems can see the difference.
3535 sPRIfldbl (longdblfio.U):
3536 This variable, if defined, contains the string used by stdio to
3537 format long doubles (format 'f') for output.
3539 sPRIFUldbl (longdblfio.U):
3540 This variable, if defined, contains the string used by stdio to
3541 format long doubles (format 'F') for output.
3542 The 'U' in the name is to separate this from sPRIfldbl so that even
3543 case-blind systems can see the difference.
3545 sPRIgldbl (longdblfio.U):
3546 This variable, if defined, contains the string used by stdio to
3547 format long doubles (format 'g') for output.
3549 sPRIGUldbl (longdblfio.U):
3550 This variable, if defined, contains the string used by stdio to
3551 format long doubles (format 'G') for output.
3552 The 'U' in the name is to separate this from sPRIgldbl so that even
3553 case-blind systems can see the difference.
3555 sPRIi64 (quadfio.U):
3556 This variable, if defined, contains the string used by stdio to
3557 format 64-bit decimal numbers (format 'i') for output.
3559 sPRIo64 (quadfio.U):
3560 This variable, if defined, contains the string used by stdio to
3561 format 64-bit octal numbers (format 'o') for output.
3563 sPRIu64 (quadfio.U):
3564 This variable, if defined, contains the string used by stdio to
3565 format 64-bit unsigned decimal numbers (format 'u') for output.
3567 sPRIx64 (quadfio.U):
3568 This variable, if defined, contains the string used by stdio to
3569 format 64-bit hexadecimal numbers (format 'x') for output.
3571 sPRIXU64 (quadfio.U):
3572 This variable, if defined, contains the string used by stdio to
3573 format 64-bit hExADECimAl numbers (format 'X') for output.
3574 The 'U' in the name is to separate this from sPRIx64 so that even
3575 case-blind systems can see the difference.
3578 This variable holds the path to the package source. It is up to
3579 the Makefile to use this variable and set VPATH accordingly to
3580 find the sources remotely.
3582 sSCNfldbl (longdblfio.U):
3583 This variable, if defined, contains the string used by stdio to
3584 format long doubles (format 'f') for input.
3586 ssizetype (ssizetype.U):
3587 This variable defines ssizetype to be something like ssize_t,
3588 long or int. It is used by functions that return a count
3589 of bytes or an error condition. It must be a signed type.
3590 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3592 startperl (startperl.U):
3593 This variable contains the string to put on the front of a perl
3594 script to make sure (hopefully) that it runs with perl and not some
3595 shell. Of course, that leading line must be followed by the classical
3597 eval 'exec perl -S $0 ${1+"$@"}'
3598 if $running_under_some_shell;
3599 to guarantee perl startup should the shell execute the script. Note
3600 that this magic incatation is not understood by csh.
3602 startsh (startsh.U):
3603 This variable contains the string to put on the front of a shell
3604 script to make sure (hopefully) that it runs with sh and not some
3607 static_ext (Extensions.U):
3608 This variable holds a list of XS extension files we want to
3609 link statically into the package. It is used by Makefile.
3611 stdchar (stdchar.U):
3612 This variable conditionally defines STDCHAR to be the type of char
3613 used in stdio.h. It has the values "unsigned char" or "char".
3615 stdio_base (d_stdstdio.U):
3616 This variable defines how, given a FILE pointer, fp, to access the
3617 _base field (or equivalent) of stdio.h's FILE structure. This will
3618 be used to define the macro FILE_base(fp).
3620 stdio_bufsiz (d_stdstdio.U):
3621 This variable defines how, given a FILE pointer, fp, to determine
3622 the number of bytes store in the I/O buffer pointer to by the
3623 _base field (or equivalent) of stdio.h's FILE structure. This will
3624 be used to define the macro FILE_bufsiz(fp).
3626 stdio_cnt (d_stdstdio.U):
3627 This variable defines how, given a FILE pointer, fp, to access the
3628 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3629 be used to define the macro FILE_cnt(fp).
3631 stdio_filbuf (d_stdstdio.U):
3632 This variable defines how, given a FILE pointer, fp, to tell
3633 stdio to refill its internal buffers (?). This will
3634 be used to define the macro FILE_filbuf(fp).
3636 stdio_ptr (d_stdstdio.U):
3637 This variable defines how, given a FILE pointer, fp, to access the
3638 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3639 be used to define the macro FILE_ptr(fp).
3641 stdio_stream_array (stdio_streams.U):
3642 This variable tells the name of the array holding the stdio streams.
3643 Usual values include _iob, __iob, and __sF.
3645 strings (i_string.U):
3646 This variable holds the full path of the string header that will be
3647 used. Typically /usr/include/string.h or /usr/include/strings.h.
3650 This variable is defined but not used by Configure.
3651 The value is a plain '' and is not useful.
3653 subversion (patchlevel.U):
3654 The subversion level of this package.
3655 The value of subversion comes from the patchlevel.h file.
3656 In a version number such as 5.6.1, this is the "1".
3657 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3658 This is unique to perl.
3661 This variable holds the place where the manual is located on this
3662 system. It is not the place where the user wants to put his manual
3663 pages. Rather it is the place where Configure may look to find manual
3664 for unix commands (section 1 of the manual usually). See mansrc.
3667 This variable is defined but not used by Configure.
3668 The value is a plain '' and is not useful.
3671 This variable is defined but not used by Configure.
3672 The value is a plain '' and is not useful.
3674 targetarch (Cross.U):
3675 If cross-compiling, this variable contains the target architecture.
3676 If not, this will be empty.
3679 This variable is defined but not used by Configure.
3680 The value is a plain '' and is not useful.
3683 This variable is defined but not used by Configure.
3684 The value is a plain '' and is not useful.
3687 This variable is used internally by Configure to determine the
3688 full pathname (if any) of the test program. After Configure runs,
3689 the value is reset to a plain "test" and is not useful.
3691 timeincl (i_time.U):
3692 This variable holds the full path of the included time header(s).
3694 timetype (d_time.U):
3695 This variable holds the type returned by time(). It can be long,
3696 or time_t on BSD sites (in which case <sys/types.h> should be
3697 included). Anyway, the type Time_t should be used.
3700 This variable contains the command used by Configure
3701 to copy to from the target host. Useful and available
3702 only during Perl build.
3703 The string ':' if not cross-compiling.
3706 This variable is used internally by Configure to determine the
3707 full pathname (if any) of the touch program. After Configure runs,
3708 the value is reset to a plain "touch" and is not useful.
3711 This variable is used internally by Configure to determine the
3712 full pathname (if any) of the tr program. After Configure runs,
3713 the value is reset to a plain "tr" and is not useful.
3716 This variable contains the value to be passed to the tr(1)
3717 command to transliterate a newline. Typical values are
3718 '\012' and '\n'. This is needed for EBCDIC systems where
3719 newline is not necessarily '\012'.
3722 This variable is defined but not used by Configure.
3723 The value is a plain '' and is not useful.
3726 This variable is the size of an U16 in bytes.
3729 This variable contains the C type used for Perl's U16.
3732 This variable is the size of an U32 in bytes.
3735 This variable contains the C type used for Perl's U32.
3738 This variable is the size of an U64 in bytes.
3741 This variable contains the C type used for Perl's U64.
3744 This variable is the size of an U8 in bytes.
3747 This variable contains the C type used for Perl's U8.
3750 This variable contains the format string used for printing a Uid_t.
3752 uidsign (uidsign.U):
3753 This variable contains the signedness of a uidtype.
3754 1 for unsigned, -1 for signed.
3756 uidsize (uidsize.U):
3757 This variable contains the size of a uidtype in bytes.
3759 uidtype (uidtype.U):
3760 This variable defines Uid_t to be something like uid_t, int,
3761 ushort, or whatever type is used to declare user ids in the kernel.
3764 This variable is used internally by Configure to determine the
3765 full pathname (if any) of the uname program. After Configure runs,
3766 the value is reset to a plain "uname" and is not useful.
3769 This variable is used internally by Configure to determine the
3770 full pathname (if any) of the uniq program. After Configure runs,
3771 the value is reset to a plain "uniq" and is not useful.
3773 uquadtype (quadtype.U):
3774 This variable defines Uquad_t to be something like unsigned long,
3775 unsigned int, unsigned long long, uint64_t, or whatever type is
3776 used for 64-bit integers.
3778 use5005threads (usethreads.U):
3779 This variable conditionally defines the USE_5005THREADS symbol,
3780 and indicates that Perl should be built to use the 5.005-based
3781 threading implementation.
3783 use64bitall (use64bits.U):
3784 This variable conditionally defines the USE_64_BIT_ALL symbol,
3785 and indicates that 64-bit integer types should be used
3786 when available. The maximal possible
3787 64-bitness is employed: LP64 or ILP64, meaning that you will
3788 be able to use more than 2 gigabytes of memory. This mode is
3789 even more binary incompatible than USE_64_BIT_INT. You may not
3790 be able to run the resulting executable in a 32-bit CPU at all or
3791 you may need at least to reboot your OS to 64-bit mode.
3793 use64bitint (use64bits.U):
3794 This variable conditionally defines the USE_64_BIT_INT symbol,
3795 and indicates that 64-bit integer types should be used
3796 when available. The minimal possible 64-bitness
3797 is employed, just enough to get 64-bit integers into Perl.
3798 This may mean using for example "long longs", while your memory
3799 may still be limited to 2 gigabytes.
3801 usecrosscompile (Cross.U):
3802 This variable conditionally defines the USE_CROSS_COMPILE symbol,
3803 and indicates that Perl has been cross-compiled.
3806 This variable indicates if the system supports dynamic
3807 loading of some sort. See also dlsrc and dlobj.
3809 useithreads (usethreads.U):
3810 This variable conditionally defines the USE_ITHREADS symbol,
3811 and indicates that Perl should be built to use the interpreter-based
3812 threading implementation.
3814 uselargefiles (uselfs.U):
3815 This variable conditionally defines the USE_LARGE_FILES symbol,
3816 and indicates that large file interfaces should be used when
3819 uselongdouble (uselongdbl.U):
3820 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3821 and indicates that long doubles should be used when available.
3823 usemorebits (usemorebits.U):
3824 This variable conditionally defines the USE_MORE_BITS symbol,
3825 and indicates that explicit 64-bit interfaces and long doubles
3826 should be used when available.
3828 usemultiplicity (usemultiplicity.U):
3829 This variable conditionally defines the MULTIPLICITY symbol,
3830 and indicates that Perl should be built to use multiplicity.
3832 usemymalloc (mallocsrc.U):
3833 This variable contains y if the malloc that comes with this package
3834 is desired over the system's version of malloc. People often include
3835 special versions of malloc for effiency, but such versions are often
3836 less portable. See also mallocsrc and mallocobj.
3837 If this is 'y', then -lmalloc is removed from $libs.
3840 This variable contains 'true' or 'false' depending whether the
3841 nm extraction is wanted or not.
3843 useopcode (Extensions.U):
3844 This variable holds either 'true' or 'false' to indicate
3845 whether the Opcode extension should be used. The sole
3846 use for this currently is to allow an easy mechanism
3847 for users to skip the Opcode extension from the Configure
3850 useperlio (useperlio.U):
3851 This variable conditionally defines the USE_PERLIO symbol,
3852 and indicates that the PerlIO abstraction should be
3855 useposix (Extensions.U):
3856 This variable holds either 'true' or 'false' to indicate
3857 whether the POSIX extension should be used. The sole
3858 use for this currently is to allow an easy mechanism
3859 for hints files to indicate that POSIX will not compile
3860 on a particular system.
3862 usereentrant (usethreads.U):
3863 This variable conditionally defines the USE_REENTRANT_API symbol,
3864 which indicates that the thread code may try to use the various
3865 _r versions of library functions. This is only potentially
3866 meaningful if usethreads is set and is very experimental, it is
3867 not even prompted for.
3870 This variable is set to true when the user agrees to use sfio.
3871 It is set to false when sfio is not available or when the user
3872 explicitely requests not to use sfio. It is here primarily so
3873 that command-line settings can override the auto-detection of
3874 d_sfio without running into a "WHOA THERE".
3876 useshrplib (libperl.U):
3877 This variable is set to 'yes' if the user wishes
3878 to build a shared libperl, and 'no' otherwise.
3880 usesocks (usesocks.U):
3881 This variable conditionally defines the USE_SOCKS symbol,
3882 and indicates that Perl should be built to use SOCKS.
3884 usethreads (usethreads.U):
3885 This variable conditionally defines the USE_THREADS symbol,
3886 and indicates that Perl should be built to use threads.
3888 usevendorprefix (vendorprefix.U):
3889 This variable tells whether the vendorprefix
3890 and consequently other vendor* paths are in use.
3892 usevfork (d_vfork.U):
3893 This variable is set to true when the user accepts to use vfork.
3894 It is set to false when no vfork is available or when the user
3895 explicitely requests not to use vfork.
3898 This variable holds the path of the include files, which is
3899 usually /usr/include. It is mainly used by other Configure units.
3902 This variable is defined but not used by Configure.
3903 The value is a plain '' and is not useful.
3905 uvoformat (perlxvf.U):
3906 This variable contains the format string used for printing
3907 a Perl UV as an unsigned octal integer.
3910 This variable is the size of a UV in bytes.
3913 This variable contains the C type used for Perl's UV.
3915 uvuformat (perlxvf.U):
3916 This variable contains the format string used for printing
3917 a Perl UV as an unsigned decimal integer.
3919 uvxformat (perlxvf.U):
3920 This variable contains the format string used for printing
3921 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3923 uvXUformat (perlxvf.U):
3924 This variable contains the format string used for printing
3925 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3927 vendorarch (vendorarch.U):
3928 This variable contains the value of the PERL_VENDORARCH symbol.
3929 It may have a ~ on the front.
3930 The standard distribution will put nothing in this directory.
3931 Vendors who distribute perl may wish to place their own
3932 architecture-dependent modules and extensions in this directory with
3933 MakeMaker Makefile.PL INSTALLDIRS=vendor
3934 or equivalent. See INSTALL for details.
3936 vendorarchexp (vendorarch.U):
3937 This variable is the ~name expanded version of vendorarch, so that you
3938 may use it directly in Makefiles or shell scripts.
3940 vendorbin (vendorbin.U):
3941 This variable contains the eventual value of the VENDORBIN symbol.
3942 It may have a ~ on the front.
3943 The standard distribution will put nothing in this directory.
3944 Vendors who distribute perl may wish to place additional
3945 binaries in this directory with
3946 MakeMaker Makefile.PL INSTALLDIRS=vendor
3947 or equivalent. See INSTALL for details.
3949 vendorbinexp (vendorbin.U):
3950 This variable is the ~name expanded version of vendorbin, so that you
3951 may use it directly in Makefiles or shell scripts.
3953 vendorlib (vendorlib.U):
3954 This variable contains the eventual value of the VENDORLIB symbol,
3955 which is the name of the private library for this package.
3956 The standard distribution will put nothing in this directory.
3957 Vendors who distribute perl may wish to place their own
3958 modules in this directory with
3959 MakeMaker Makefile.PL INSTALLDIRS=vendor
3960 or equivalent. See INSTALL for details.
3962 vendorlib_stem (vendorlib.U):
3963 This variable is $vendorlibexp with any trailing version-specific component
3964 removed. The elements in inc_version_list (inc_version_list.U) can
3965 be tacked onto this variable to generate a list of directories to search.
3967 vendorlibexp (vendorlib.U):
3968 This variable is the ~name expanded version of vendorlib, so that you
3969 may use it directly in Makefiles or shell scripts.
3971 vendorprefix (vendorprefix.U):
3972 This variable holds the full absolute path of the directory below
3973 which the vendor will install add-on packages.
3974 See INSTALL for usage and examples.
3976 vendorprefixexp (vendorprefix.U):
3977 This variable holds the full absolute path of the directory below
3978 which the vendor will install add-on packages. Derived from vendorprefix.
3980 version (patchlevel.U):
3981 The full version number of this package, such as 5.6.1 (or 5_6_1).
3982 This combines revision, patchlevel, and subversion to get the
3983 full version number, including any possible subversions.
3984 This is suitable for use as a directory name, and hence is
3985 filesystem dependent.
3987 version_patchlevel_string (patchlevel.U):
3988 This is a string combining version, subversion and
3989 perl_patchlevel (if perl_patchlevel is non-zero).
3990 It is typically something like
3991 'version 7 subversion 1' or
3992 'version 7 subversion 1 patchlevel 11224'
3993 It is computed here to avoid duplication of code in myconfig.SH
3996 versiononly (versiononly.U):
3997 If set, this symbol indicates that only the version-specific
3998 components of a perl installation should be installed.
3999 This may be useful for making a test installation of a new
4000 version without disturbing the existing installation.
4001 Setting versiononly is equivalent to setting installperl's -v option.
4002 In particular, the non-versioned scripts and programs such as
4003 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
4004 (see INSTALL for a more complete list). Nor are the man
4006 Usually, this is undef.
4009 This variable is defined but not used by Configure.
4010 The value is a plain '' and is not useful.
4012 voidflags (voidflags.U):
4013 This variable contains the eventual value of the VOIDFLAGS symbol,
4014 which indicates how much support of the void type is given by this
4015 compiler. See VOIDFLAGS for more info.
4018 This variable holds extra path (space-separated) used to find
4019 libraries on this platform, for example CPU-specific libraries
4020 (on multi-CPU platforms) may be listed here.
4022 xs_apiversion (xs_apiversion.U):
4023 This variable contains the version of the oldest perl binary
4024 compatible with the present perl. perl.c:incpush() and
4025 lib/lib.pm will automatically search in $sitearch for older
4026 directories across major versions back to xs_apiversion.
4027 This is only useful if you have a perl library directory tree
4028 structured like the default one.
4029 See INSTALL for how this works.
4030 The versioned site_perl directory was introduced in 5.005,
4031 so that is the lowest possible value.
4032 Since this can depend on compile time options (such as
4033 bincompat) it is set by Configure. Other non-default sources
4034 of potential incompatibility, such as multiplicity, threads,
4035 debugging, 64bits, sfio, etc., are not checked for currently,
4036 though in principle we could go snooping around in old
4040 This variable holds the name of the compiler compiler we
4041 want to use in the Makefile. It can be yacc, byacc, or bison -y.
4044 This variable contains any additional yacc flags desired by the
4045 user. It is up to the Makefile to use this.
4048 This variable is defined but not used by Configure.
4049 The value is a plain '' and is not useful.
4052 This variable is used internally by Configure to determine the
4053 full pathname (if any) of the zip program. After Configure runs,
4054 the value is reset to a plain "zip" and is not useful.