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 defined but not used by Configure.
247 The value is a plain '' and is not useful.
250 This variable is defined but not used by Configure.
251 The value is a plain '' and is not useful.
253 clocktype (d_times.U):
254 This variable holds the type returned by times(). It can be long,
255 or clock_t on BSD sites (in which case <sys/types.h> should be
259 This variable is used internally by Configure to determine the
260 full pathname (if any) of the comm program. After Configure runs,
261 the value is reset to a plain "comm" and is not useful.
264 This variable is defined but not used by Configure.
265 The value is a plain '' and is not useful.
267 contains (contains.U):
268 This variable holds the command to do a grep with a proper return
269 status. On most sane systems it is simply "grep". On insane systems
270 it is a grep followed by a cat followed by a test. This variable
271 is primarily for the use of other Configure units.
274 This variable is used internally by Configure to determine the
275 full pathname (if any) of the cp program. After Configure runs,
276 the value is reset to a plain "cp" and is not useful.
279 This variable is defined but not used by Configure.
280 The value is a plain '' and is not useful.
283 This variable is used internally by Configure to determine the
284 full pathname (if any) of the cpp program. After Configure runs,
285 the value is reset to a plain "cpp" and is not useful.
287 cpp_stuff (cpp_stuff.U):
288 This variable contains an identification of the catenation mechanism
289 used by the C preprocessor.
291 cppccsymbols (Cppsym.U):
292 The variable contains the symbols defined by the C compiler
293 when it calls cpp. The symbols defined by the cc alone or cpp
294 alone are not in this list, see ccsymbols and cppsymbols.
295 The list is a space-separated list of symbol=value tokens.
297 cppflags (ccflags.U):
298 This variable holds the flags that will be passed to the C pre-
299 processor. It is up to the Makefile to use it.
301 cpplast (cppstdin.U):
302 This variable has the same functionality as cppminus, only it applies
303 to cpprun and not cppstdin.
305 cppminus (cppstdin.U):
306 This variable contains the second part of the string which will invoke
307 the C preprocessor on the standard input and produce to standard
308 output. This variable will have the value "-" if cppstdin needs
309 a minus to specify standard input, otherwise the value is "".
312 This variable contains the command which will invoke a C preprocessor
313 on standard input and put the output to stdout. It is guaranteed not
314 to be a wrapper and may be a null string if no preprocessor can be
315 made directly available. This preprocessor might be different from the
316 one used by the C compiler. Don't forget to append cpplast after the
317 preprocessor options.
319 cppstdin (cppstdin.U):
320 This variable contains the command which will invoke the C
321 preprocessor on standard input and put the output to stdout.
322 It is primarily used by other Configure units that ask about
323 preprocessor symbols.
325 cppsymbols (Cppsym.U):
326 The variable contains the symbols defined by the C preprocessor
327 alone. The symbols defined by cc or by cc when it calls cpp are
328 not in this list, see ccsymbols and cppccsymbols.
329 The list is a space-separated list of symbol=value tokens.
331 crosscompile (crosscompile.U):
332 This variable conditionally defines the CROSSCOMPILE symbol
333 which signifies that the build process is be a cross-compilation.
334 This is normally set by hints files or from Configure command line.
336 cryptlib (d_crypt.U):
337 This variable holds -lcrypt or the path to a libcrypt.a archive if
338 the crypt() function is not defined in the standard C library. It is
339 up to the Makefile to use this.
342 This variable is used internally by Configure to determine the
343 full pathname (if any) of the csh program. After Configure runs,
344 the value is reset to a plain "csh" and is not useful.
346 d__fwalk (d__fwalk.U):
347 This variable conditionally defines HAS__FWALK if _fwalk() is
348 available to apply a function to all the file handles.
350 d_access (d_access.U):
351 This variable conditionally defines HAS_ACCESS if the access() system
352 call is available to check for access permissions using real IDs.
354 d_accessx (d_accessx.U):
355 This variable conditionally defines the HAS_ACCESSX symbol, which
356 indicates to the C program that the accessx() routine is available.
359 This variable conditionally defines the HAS_ALARM symbol, which
360 indicates to the C program that the alarm() routine is available.
362 d_archlib (archlib.U):
363 This variable conditionally defines ARCHLIB to hold the pathname
364 of architecture-dependent library files for $package. If
365 $archlib is the same as $privlib, then this is set to undef.
368 This variable conditionally defines the HAS_ATOLF symbol, which
369 indicates to the C program that the atolf() routine is available.
372 This variable conditionally defines the HAS_ATOLL symbol, which
373 indicates to the C program that the atoll() routine is available.
375 d_attribut (d_attribut.U):
376 This variable conditionally defines HASATTRIBUTE, which
377 indicates the C compiler can check for function attributes,
378 such as printf formats.
381 This variable conditionally defines the HAS_BCMP symbol if
382 the bcmp() routine is available to compare strings.
385 This variable conditionally defines the HAS_BCOPY symbol if
386 the bcopy() routine is available to copy strings.
388 d_bincompat5005 (bincompat5005.U):
389 This variable conditionally defines BINCOMPAT5005 so that embed.h
390 can take special action if this version of Perl should be
391 binary-compatible with Perl 5.005. This is impossible for builds
392 that use features like threads and multiplicity it is always $undef
396 This symbol conditionally defines the symbol BSD when running on a
399 d_bsdgetpgrp (d_getpgrp.U):
400 This variable conditionally defines USE_BSD_GETPGRP if
401 getpgrp needs one arguments whereas USG one needs none.
403 d_bsdsetpgrp (d_setpgrp.U):
404 This variable conditionally defines USE_BSD_SETPGRP if
405 setpgrp needs two arguments whereas USG one needs none.
406 See also d_setpgid for a POSIX interface.
409 This variable conditionally defines the HAS_BZERO symbol if
410 the bzero() routine is available to set memory to 0.
412 d_casti32 (d_casti32.U):
413 This variable conditionally defines CASTI32, which indicates
414 whether the C compiler can cast large floats to 32-bit ints.
416 d_castneg (d_castneg.U):
417 This variable conditionally defines CASTNEG, which indicates
418 wether the C compiler can cast negative float to unsigned.
420 d_charvspr (d_vprintf.U):
421 This variable conditionally defines CHARVSPRINTF if this system
422 has vsprintf returning type (char*). The trend seems to be to
423 declare it as "int vsprintf()".
426 This variable conditionally defines the HAS_CHOWN symbol, which
427 indicates to the C program that the chown() routine is available.
429 d_chroot (d_chroot.U):
430 This variable conditionally defines the HAS_CHROOT symbol, which
431 indicates to the C program that the chroot() routine is available.
433 d_chsize (d_chsize.U):
434 This variable conditionally defines the CHSIZE symbol, which
435 indicates to the C program that the chsize() routine is available
436 to truncate files. You might need a -lx to get this routine.
438 d_closedir (d_closedir.U):
439 This variable conditionally defines HAS_CLOSEDIR if closedir() is
442 d_cmsghdr_s (d_cmsghdr_s.U):
443 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
444 which indicates that the struct cmsghdr is supported.
447 This variable conditionally defines the HASCONST symbol, which
448 indicates to the C program that this C compiler knows about the
452 This variable conditionally defines the CRYPT symbol, which
453 indicates to the C program that the crypt() routine is available
454 to encrypt passwords and the like.
457 This variable conditionally defines the CSH symbol, which
458 indicates to the C program that the C-shell exists.
460 d_cuserid (d_cuserid.U):
461 This variable conditionally defines the HAS_CUSERID symbol, which
462 indicates to the C program that the cuserid() routine is available
463 to get character login names.
465 d_dbl_dig (d_dbl_dig.U):
466 This variable conditionally defines d_dbl_dig if this system's
467 header files provide DBL_DIG, which is the number of significant
468 digits in a double precision number.
470 d_dbminitproto (d_dbminitproto.U):
471 This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
472 which indicates to the C program that the system provides
473 a prototype for the dbminit() function. Otherwise, it is
474 up to the program to supply one.
476 d_difftime (d_difftime.U):
477 This variable conditionally defines the HAS_DIFFTIME symbol, which
478 indicates to the C program that the difftime() routine is available.
480 d_dirnamlen (i_dirent.U):
481 This variable conditionally defines DIRNAMLEN, which indicates
482 to the C program that the length of directory entry names is
483 provided by a d_namelen field.
485 d_dlerror (d_dlerror.U):
486 This variable conditionally defines the HAS_DLERROR symbol, which
487 indicates to the C program that the dlerror() routine is available.
489 d_dlopen (d_dlopen.U):
490 This variable conditionally defines the HAS_DLOPEN symbol, which
491 indicates to the C program that the dlopen() routine is available.
493 d_dlsymun (d_dlsymun.U):
494 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
495 indicates that we need to prepend an underscore to the symbol
496 name before calling dlsym().
498 d_dosuid (d_dosuid.U):
499 This variable conditionally defines the symbol DOSUID, which
500 tells the C program that it should insert setuid emulation code
501 on hosts which have setuid #! scripts disabled.
503 d_drand48proto (d_drand48proto.U):
504 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
505 which indicates to the C program that the system provides
506 a prototype for the drand48() function. Otherwise, it is
507 up to the program to supply one.
510 This variable conditionally defines HAS_DUP2 if dup2() is
511 available to duplicate file descriptors.
513 d_eaccess (d_eaccess.U):
514 This variable conditionally defines the HAS_EACCESS symbol, which
515 indicates to the C program that the eaccess() routine is available.
517 d_endgrent (d_endgrent.U):
518 This variable conditionally defines the HAS_ENDGRENT symbol, which
519 indicates to the C program that the endgrent() routine is available
520 for sequential access of the group database.
522 d_endhent (d_endhent.U):
523 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
524 available to close whatever was being used for host queries.
526 d_endnent (d_endnent.U):
527 This variable conditionally defines HAS_ENDNETENT if endnetent() is
528 available to close whatever was being used for network queries.
530 d_endpent (d_endpent.U):
531 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
532 available to close whatever was being used for protocol queries.
534 d_endpwent (d_endpwent.U):
535 This variable conditionally defines the HAS_ENDPWENT symbol, which
536 indicates to the C program that the endpwent() routine is available
537 for sequential access of the passwd database.
539 d_endsent (d_endsent.U):
540 This variable conditionally defines HAS_ENDSERVENT if endservent() is
541 available to close whatever was being used for service queries.
543 d_eofnblk (nblock_io.U):
544 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
545 when reading from a non-blocking I/O source.
548 This variable conditionally defines the symbols EUNICE and VAX, which
549 alerts the C program that it must deal with ideosyncracies of VMS.
551 d_fchmod (d_fchmod.U):
552 This variable conditionally defines the HAS_FCHMOD symbol, which
553 indicates to the C program that the fchmod() routine is available
554 to change mode of opened files.
556 d_fchown (d_fchown.U):
557 This variable conditionally defines the HAS_FCHOWN symbol, which
558 indicates to the C program that the fchown() routine is available
559 to change ownership of opened files.
562 This variable conditionally defines the HAS_FCNTL symbol, and indicates
563 whether the fcntl() function exists
565 d_fcntl_can_lock (d_fcntl_can_lock.U):
566 This variable conditionally defines the FCNTL_CAN_LOCK symbol
567 and indicates whether file locking with fcntl() works.
569 d_fd_macros (d_fd_set.U):
570 This variable contains the eventual value of the HAS_FD_MACROS symbol,
571 which indicates if your C compiler knows about the macros which
572 manipulate an fd_set.
574 d_fd_set (d_fd_set.U):
575 This variable contains the eventual value of the HAS_FD_SET symbol,
576 which indicates if your C compiler knows about the fd_set typedef.
578 d_fds_bits (d_fd_set.U):
579 This variable contains the eventual value of the HAS_FDS_BITS symbol,
580 which indicates if your fd_set typedef contains the fds_bits member.
581 If you have an fd_set typedef, but the dweebs who installed it did
582 a half-fast job and neglected to provide the macros to manipulate
583 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
585 d_fgetpos (d_fgetpos.U):
586 This variable conditionally defines HAS_FGETPOS if fgetpos() is
587 available to get the file position indicator.
589 d_flexfnam (d_flexfnam.U):
590 This variable conditionally defines the FLEXFILENAMES symbol, which
591 indicates that the system supports filenames longer than 14 characters.
594 This variable conditionally defines HAS_FLOCK if flock() is
595 available to do file locking.
597 d_flockproto (d_flockproto.U):
598 This variable conditionally defines the HAS_FLOCK_PROTO symbol,
599 which indicates to the C program that the system provides
600 a prototype for the flock() function. Otherwise, it is
601 up to the program to supply one.
604 This variable conditionally defines the HAS_FORK symbol, which
605 indicates to the C program that the fork() routine is available.
607 d_fpathconf (d_pathconf.U):
608 This variable conditionally defines the HAS_FPATHCONF symbol, which
609 indicates to the C program that the pathconf() routine is available
610 to determine file-system related limits and options associated
611 with a given open file descriptor.
613 d_fpos64_t (d_fpos64_t.U):
614 This symbol will be defined if the C compiler supports fpos64_t.
616 d_frexpl (d_frexpl.U):
617 This variable conditionally defines the HAS_FREXPL symbol, which
618 indicates to the C program that the frexpl() routine is available.
620 d_fs_data_s (d_fs_data_s.U):
621 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
622 which indicates that the struct fs_data is supported.
624 d_fseeko (d_fseeko.U):
625 This variable conditionally defines the HAS_FSEEKO symbol, which
626 indicates to the C program that the fseeko() routine is available.
628 d_fsetpos (d_fsetpos.U):
629 This variable conditionally defines HAS_FSETPOS if fsetpos() is
630 available to set the file position indicator.
632 d_fstatfs (d_fstatfs.U):
633 This variable conditionally defines the HAS_FSTATFS symbol, which
634 indicates to the C program that the fstatfs() routine is available.
636 d_fstatvfs (d_statvfs.U):
637 This variable conditionally defines the HAS_FSTATVFS symbol, which
638 indicates to the C program that the fstatvfs() routine is available.
641 This variable conditionally defines the HAS_FSYNC symbol, which
642 indicates to the C program that the fsync() routine is available.
644 d_ftello (d_ftello.U):
645 This variable conditionally defines the HAS_FTELLO symbol, which
646 indicates to the C program that the ftello() routine is available.
649 This variable conditionally defines the HAS_FTIME symbol, which indicates
650 that the ftime() routine exists. The ftime() routine is basically
651 a sub-second accuracy clock.
653 d_Gconvert (d_gconvert.U):
654 This variable holds what Gconvert is defined as to convert
655 floating point numbers into strings. It could be 'gconvert'
656 or a more complex macro emulating gconvert with gcvt() or sprintf.
658 d_Gconvert='gconvert((x),(n),(t),(b))'
659 d_Gconvert='gcvt((x),(n),(b))'
660 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
662 d_getcwd (d_getcwd.U):
663 This variable conditionally defines the HAS_GETCWD symbol, which
664 indicates to the C program that the getcwd() routine is available
665 to get the current working directory.
667 d_getespwnam (d_getespwnam.U):
668 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
669 available to retrieve enchanced (shadow) password entries by name.
671 d_getfsstat (d_getfsstat.U):
672 This variable conditionally defines the HAS_GETFSSTAT symbol, which
673 indicates to the C program that the getfsstat() routine is available.
675 d_getgrent (d_getgrent.U):
676 This variable conditionally defines the HAS_GETGRENT symbol, which
677 indicates to the C program that the getgrent() routine is available
678 for sequential access of the group database.
680 d_getgrps (d_getgrps.U):
681 This variable conditionally defines the HAS_GETGROUPS symbol, which
682 indicates to the C program that the getgroups() routine is available
683 to get the list of process groups.
685 d_gethbyaddr (d_gethbyad.U):
686 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
687 indicates to the C program that the gethostbyaddr() routine is available
688 to look up hosts by their IP addresses.
690 d_gethbyname (d_gethbynm.U):
691 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
692 indicates to the C program that the gethostbyname() routine is available
693 to look up host names in some data base or other.
695 d_gethent (d_gethent.U):
696 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
697 available to look up host names in some data base or another.
699 d_gethname (d_gethname.U):
700 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
701 indicates to the C program that the gethostname() routine may be
702 used to derive the host name.
704 d_gethostprotos (d_gethostprotos.U):
705 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
706 which indicates to the C program that <netdb.h> supplies
707 prototypes for the various gethost*() functions.
708 See also netdbtype.U for probing for various netdb types.
710 d_getitimer (d_getitimer.U):
711 This variable conditionally defines the HAS_GETITIMER symbol, which
712 indicates to the C program that the getitimer() routine is available.
714 d_getlogin (d_getlogin.U):
715 This variable conditionally defines the HAS_GETLOGIN symbol, which
716 indicates to the C program that the getlogin() routine is available
717 to get the login name.
719 d_getmnt (d_getmnt.U):
720 This variable conditionally defines the HAS_GETMNT symbol, which
721 indicates to the C program that the getmnt() routine is available
722 to retrieve one or more mount info blocks by filename.
724 d_getmntent (d_getmntent.U):
725 This variable conditionally defines the HAS_GETMNTENT symbol, which
726 indicates to the C program that the getmntent() routine is available
727 to iterate through mounted files to get their mount info.
729 d_getnbyaddr (d_getnbyad.U):
730 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
731 indicates to the C program that the getnetbyaddr() routine is available
732 to look up networks by their IP addresses.
734 d_getnbyname (d_getnbynm.U):
735 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
736 indicates to the C program that the getnetbyname() routine is available
737 to look up networks by their names.
739 d_getnent (d_getnent.U):
740 This variable conditionally defines HAS_GETNETENT if getnetent() is
741 available to look up network names in some data base or another.
743 d_getnetprotos (d_getnetprotos.U):
744 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
745 which indicates to the C program that <netdb.h> supplies
746 prototypes for the various getnet*() functions.
747 See also netdbtype.U for probing for various netdb types.
749 d_getpagsz (d_getpagsz.U):
750 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
751 is available to get the system page size.
753 d_getpbyname (d_getprotby.U):
754 This variable conditionally defines the HAS_GETPROTOBYNAME
755 symbol, which indicates to the C program that the
756 getprotobyname() routine is available to look up protocols
759 d_getpbynumber (d_getprotby.U):
760 This variable conditionally defines the HAS_GETPROTOBYNUMBER
761 symbol, which indicates to the C program that the
762 getprotobynumber() routine is available to look up protocols
765 d_getpent (d_getpent.U):
766 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
767 available to look up protocols in some data base or another.
769 d_getpgid (d_getpgid.U):
770 This variable conditionally defines the HAS_GETPGID symbol, which
771 indicates to the C program that the getpgid(pid) function
772 is available to get the process group id.
774 d_getpgrp2 (d_getpgrp2.U):
775 This variable conditionally defines the HAS_GETPGRP2 symbol, which
776 indicates to the C program that the getpgrp2() (as in DG/UX) routine
777 is available to get the current process group.
779 d_getpgrp (d_getpgrp.U):
780 This variable conditionally defines HAS_GETPGRP if getpgrp() is
781 available to get the current process group.
783 d_getppid (d_getppid.U):
784 This variable conditionally defines the HAS_GETPPID symbol, which
785 indicates to the C program that the getppid() routine is available
786 to get the parent process ID.
788 d_getprior (d_getprior.U):
789 This variable conditionally defines HAS_GETPRIORITY if getpriority()
790 is available to get a process's priority.
792 d_getprotoprotos (d_getprotoprotos.U):
793 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
794 which indicates to the C program that <netdb.h> supplies
795 prototypes for the various getproto*() functions.
796 See also netdbtype.U for probing for various netdb types.
798 d_getprpwnam (d_getprpwnam.U):
799 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
800 available to retrieve protected (shadow) password entries by name.
802 d_getpwent (d_getpwent.U):
803 This variable conditionally defines the HAS_GETPWENT symbol, which
804 indicates to the C program that the getpwent() routine is available
805 for sequential access of the passwd database.
807 d_getsbyname (d_getsrvby.U):
808 This variable conditionally defines the HAS_GETSERVBYNAME
809 symbol, which indicates to the C program that the
810 getservbyname() routine is available to look up services
813 d_getsbyport (d_getsrvby.U):
814 This variable conditionally defines the HAS_GETSERVBYPORT
815 symbol, which indicates to the C program that the
816 getservbyport() routine is available to look up services
819 d_getsent (d_getsent.U):
820 This variable conditionally defines HAS_GETSERVENT if getservent() is
821 available to look up network services in some data base or another.
823 d_getservprotos (d_getservprotos.U):
824 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
825 which indicates to the C program that <netdb.h> supplies
826 prototypes for the various getserv*() functions.
827 See also netdbtype.U for probing for various netdb types.
829 d_getspnam (d_getspnam.U):
830 This variable conditionally defines HAS_GETSPNAM if getspnam() is
831 available to retrieve SysV shadow password entries by name.
833 d_gettimeod (d_ftime.U):
834 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
835 indicates that the gettimeofday() system call exists (to obtain a
836 sub-second accuracy clock). You should probably include <sys/resource.h>.
838 d_gnulibc (d_gnulibc.U):
839 Defined if we're dealing with the GNU C Library.
841 d_grpasswd (i_grp.U):
842 This variable conditionally defines GRPASSWD, which indicates
843 that struct group in <grp.h> contains gr_passwd.
845 d_hasmntopt (d_hasmntopt.U):
846 This variable conditionally defines the HAS_HASMNTOPT symbol, which
847 indicates to the C program that the hasmntopt() routine is available
848 to query the mount options of file systems.
851 This variable conditionally defines HAS_HTONL if htonl() and its
852 friends are available to do network order byte swapping.
855 This variable conditionally defines the HAS_ICONV symbol, which
856 indicates to the C program that the iconv() routine is available.
858 d_index (d_strchr.U):
859 This variable conditionally defines HAS_INDEX if index() and
860 rindex() are available for string searching.
862 d_inetaton (d_inetaton.U):
863 This variable conditionally defines the HAS_INET_ATON symbol, which
864 indicates to the C program that the inet_aton() function is available
865 to parse IP address "dotted-quad" strings.
867 d_int64_t (d_int64_t.U):
868 This symbol will be defined if the C compiler supports int64_t.
870 d_isascii (d_isascii.U):
871 This variable conditionally defines the HAS_ISASCII constant,
872 which indicates to the C program that isascii() is available.
875 This variable conditionally defines the HAS_ISNAN symbol, which
876 indicates to the C program that the isnan() routine is available.
878 d_isnanl (d_isnanl.U):
879 This variable conditionally defines the HAS_ISNANL symbol, which
880 indicates to the C program that the isnanl() routine is available.
882 d_killpg (d_killpg.U):
883 This variable conditionally defines the HAS_KILLPG symbol, which
884 indicates to the C program that the killpg() routine is available
885 to kill process groups.
887 d_lchown (d_lchown.U):
888 This variable conditionally defines the HAS_LCHOWN symbol, which
889 indicates to the C program that the lchown() routine is available
890 to operate on a symbolic link (instead of following the link).
892 d_ldbl_dig (d_ldbl_dig.U):
893 This variable conditionally defines d_ldbl_dig if this system's
894 header files provide LDBL_DIG, which is the number of significant
895 digits in a long double precision number.
898 This variable conditionally defines HAS_LINK if link() is
899 available to create hard links.
901 d_locconv (d_locconv.U):
902 This variable conditionally defines HAS_LOCALECONV if localeconv() is
903 available for numeric and monetary formatting conventions.
906 This variable conditionally defines HAS_LOCKF if lockf() is
907 available to do file locking.
909 d_longdbl (d_longdbl.U):
910 This variable conditionally defines HAS_LONG_DOUBLE if
911 the long double type is supported.
913 d_longlong (d_longlong.U):
914 This variable conditionally defines HAS_LONG_LONG if
915 the long long type is supported.
917 d_lseekproto (d_lseekproto.U):
918 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
919 which indicates to the C program that the system provides
920 a prototype for the lseek() function. Otherwise, it is
921 up to the program to supply one.
924 This variable conditionally defines HAS_LSTAT if lstat() is
925 available to do file stats on symbolic links.
927 d_madvise (d_madvise.U):
928 This variable conditionally defines HAS_MADVISE if madvise() is
929 available to map a file into memory.
932 This variable conditionally defines the HAS_MBLEN symbol, which
933 indicates to the C program that the mblen() routine is available
934 to find the number of bytes in a multibye character.
936 d_mbstowcs (d_mbstowcs.U):
937 This variable conditionally defines the HAS_MBSTOWCS symbol, which
938 indicates to the C program that the mbstowcs() routine is available
939 to convert a multibyte string into a wide character string.
941 d_mbtowc (d_mbtowc.U):
942 This variable conditionally defines the HAS_MBTOWC symbol, which
943 indicates to the C program that the mbtowc() routine is available
944 to convert multibyte to a wide character.
946 d_memchr (d_memchr.U):
947 This variable conditionally defines the HAS_MEMCHR symbol, which
948 indicates to the C program that the memchr() routine is available
949 to locate characters within a C string.
951 d_memcmp (d_memcmp.U):
952 This variable conditionally defines the HAS_MEMCMP symbol, which
953 indicates to the C program that the memcmp() routine is available
954 to compare blocks of memory.
956 d_memcpy (d_memcpy.U):
957 This variable conditionally defines the HAS_MEMCPY symbol, which
958 indicates to the C program that the memcpy() routine is available
959 to copy blocks of memory.
961 d_memmove (d_memmove.U):
962 This variable conditionally defines the HAS_MEMMOVE symbol, which
963 indicates to the C program that the memmove() routine is available
964 to copy potentatially overlapping blocks of memory.
966 d_memset (d_memset.U):
967 This variable conditionally defines the HAS_MEMSET symbol, which
968 indicates to the C program that the memset() routine is available
969 to set blocks of memory.
972 This variable conditionally defines the HAS_MKDIR symbol, which
973 indicates to the C program that the mkdir() routine is available
974 to create directories..
976 d_mkdtemp (d_mkdtemp.U):
977 This variable conditionally defines the HAS_MKDTEMP symbol, which
978 indicates to the C program that the mkdtemp() routine is available
979 to exclusively create a uniquely named temporary directory.
981 d_mkfifo (d_mkfifo.U):
982 This variable conditionally defines the HAS_MKFIFO symbol, which
983 indicates to the C program that the mkfifo() routine is available.
985 d_mkstemp (d_mkstemp.U):
986 This variable conditionally defines the HAS_MKSTEMP symbol, which
987 indicates to the C program that the mkstemp() routine is available
988 to exclusively create and open a uniquely named temporary file.
990 d_mkstemps (d_mkstemps.U):
991 This variable conditionally defines the HAS_MKSTEMPS symbol, which
992 indicates to the C program that the mkstemps() routine is available
993 to exclusively create and open a uniquely named (with a suffix)
996 d_mktime (d_mktime.U):
997 This variable conditionally defines the HAS_MKTIME symbol, which
998 indicates to the C program that the mktime() routine is available.
1001 This variable conditionally defines HAS_MMAP if mmap() is
1002 available to map a file into memory.
1004 d_modfl (d_modfl.U):
1005 This variable conditionally defines the HAS_MODFL symbol, which
1006 indicates to the C program that the modfl() routine is available.
1008 d_modfl_pow32_bug (d_modfl.U):
1009 This variable conditionally defines the HAS_MODFL_POW32_BUG symbol,
1010 which indicates that modfl() is broken for long doubles >= pow(2, 32).
1011 For example from 4294967303.150000 one would get 4294967302.000000
1012 and 1.150000. The bug has been seen in certain versions of glibc,
1013 release 2.2.2 is known to be okay.
1015 d_mprotect (d_mprotect.U):
1016 This variable conditionally defines HAS_MPROTECT if mprotect() is
1017 available to modify the access protection of a memory mapped file.
1020 This variable conditionally defines the HAS_MSG symbol, which
1021 indicates that the entire msg*(2) library is present.
1023 d_msg_ctrunc (d_socket.U):
1024 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1025 which indicates that the MSG_CTRUNC is available. #ifdef is
1026 not enough because it may be an enum, glibc has been known to do this.
1028 d_msg_dontroute (d_socket.U):
1029 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1030 which indicates that the MSG_DONTROUTE is available. #ifdef is
1031 not enough because it may be an enum, glibc has been known to do this.
1033 d_msg_oob (d_socket.U):
1034 This variable conditionally defines the HAS_MSG_OOB symbol,
1035 which indicates that the MSG_OOB is available. #ifdef is
1036 not enough because it may be an enum, glibc has been known to do this.
1038 d_msg_peek (d_socket.U):
1039 This variable conditionally defines the HAS_MSG_PEEK symbol,
1040 which indicates that the MSG_PEEK is available. #ifdef is
1041 not enough because it may be an enum, glibc has been known to do this.
1043 d_msg_proxy (d_socket.U):
1044 This variable conditionally defines the HAS_MSG_PROXY symbol,
1045 which indicates that the MSG_PROXY is available. #ifdef is
1046 not enough because it may be an enum, glibc has been known to do this.
1048 d_msgctl (d_msgctl.U):
1049 This variable conditionally defines the HAS_MSGCTL symbol, which
1050 indicates to the C program that the msgctl() routine is available.
1052 d_msgget (d_msgget.U):
1053 This variable conditionally defines the HAS_MSGGET symbol, which
1054 indicates to the C program that the msgget() routine is available.
1056 d_msghdr_s (d_msghdr_s.U):
1057 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1058 which indicates that the struct msghdr is supported.
1060 d_msgrcv (d_msgrcv.U):
1061 This variable conditionally defines the HAS_MSGRCV symbol, which
1062 indicates to the C program that the msgrcv() routine is available.
1064 d_msgsnd (d_msgsnd.U):
1065 This variable conditionally defines the HAS_MSGSND symbol, which
1066 indicates to the C program that the msgsnd() routine is available.
1068 d_msync (d_msync.U):
1069 This variable conditionally defines HAS_MSYNC if msync() is
1070 available to synchronize a mapped file.
1072 d_munmap (d_munmap.U):
1073 This variable conditionally defines HAS_MUNMAP if munmap() is
1074 available to unmap a region mapped by mmap().
1076 d_mymalloc (mallocsrc.U):
1077 This variable conditionally defines MYMALLOC in case other parts
1078 of the source want to take special action if MYMALLOC is used.
1079 This may include different sorts of profiling or error detection.
1082 This variable conditionally defines the HAS_NICE symbol, which
1083 indicates to the C program that the nice() routine is available.
1085 d_nv_preserves_uv (perlxv.U):
1086 This variable indicates whether a variable of type nvtype
1087 can preserve all the bits a variable of type uvtype.
1089 d_nv_preserves_uv_bits (perlxv.U):
1090 This variable indicates how many of bits type uvtype
1091 a variable nvtype can preserve.
1093 d_off64_t (d_off64_t.U):
1094 This symbol will be defined if the C compiler supports off64_t.
1096 d_old_pthread_create_joinable (d_pthrattrj.U):
1097 This variable conditionally defines pthread_create_joinable.
1098 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1100 d_oldpthreads (usethreads.U):
1101 This variable conditionally defines the OLD_PTHREADS_API symbol,
1102 and indicates that Perl should be built to use the old
1103 draft POSIX threads API. This is only potentially meaningful if
1106 d_oldsock (d_socket.U):
1107 This variable conditionally defines the OLDSOCKET symbol, which
1108 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1110 d_open3 (d_open3.U):
1111 This variable conditionally defines the HAS_OPEN3 manifest constant,
1112 which indicates to the C program that the 3 argument version of
1113 the open(2) function is available.
1115 d_pathconf (d_pathconf.U):
1116 This variable conditionally defines the HAS_PATHCONF symbol, which
1117 indicates to the C program that the pathconf() routine is available
1118 to determine file-system related limits and options associated
1119 with a given filename.
1121 d_pause (d_pause.U):
1122 This variable conditionally defines the HAS_PAUSE symbol, which
1123 indicates to the C program that the pause() routine is available
1124 to suspend a process until a signal is received.
1126 d_perl_otherlibdirs (otherlibdirs.U):
1127 This variable conditionally defines PERL_OTHERLIBDIRS, which
1128 contains a colon-separated set of paths for the perl binary to
1129 include in @INC. See also otherlibdirs.
1131 d_phostname (d_gethname.U):
1132 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1133 contains the shell command which, when fed to popen(), may be
1134 used to derive the host name.
1137 This variable conditionally defines the HAS_PIPE symbol, which
1138 indicates to the C program that the pipe() routine is available
1139 to create an inter-process channel.
1142 This variable conditionally defines the HAS_POLL symbol, which
1143 indicates to the C program that the poll() routine is available
1144 to poll active file descriptors.
1146 d_portable (d_portable.U):
1147 This variable conditionally defines the PORTABLE symbol, which
1148 indicates to the C program that it should not assume that it is
1149 running on the machine it was compiled on.
1151 d_PRId64 (quadfio.U):
1152 This variable conditionally defines the PERL_PRId64 symbol, which
1153 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1155 d_PRIeldbl (longdblfio.U):
1156 This variable conditionally defines the PERL_PRIfldbl symbol, which
1157 indiciates that stdio has a symbol to print long doubles.
1159 d_PRIEUldbl (longdblfio.U):
1160 This variable conditionally defines the PERL_PRIfldbl symbol, which
1161 indiciates that stdio has a symbol to print long doubles.
1162 The 'U' in the name is to separate this from d_PRIeldbl so that even
1163 case-blind systems can see the difference.
1165 d_PRIfldbl (longdblfio.U):
1166 This variable conditionally defines the PERL_PRIfldbl symbol, which
1167 indiciates that stdio has a symbol to print long doubles.
1169 d_PRIFUldbl (longdblfio.U):
1170 This variable conditionally defines the PERL_PRIfldbl symbol, which
1171 indiciates that stdio has a symbol to print long doubles.
1172 The 'U' in the name is to separate this from d_PRIfldbl so that even
1173 case-blind systems can see the difference.
1175 d_PRIgldbl (longdblfio.U):
1176 This variable conditionally defines the PERL_PRIfldbl symbol, which
1177 indiciates that stdio has a symbol to print long doubles.
1179 d_PRIGUldbl (longdblfio.U):
1180 This variable conditionally defines the PERL_PRIfldbl symbol, which
1181 indiciates that stdio has a symbol to print long doubles.
1182 The 'U' in the name is to separate this from d_PRIgldbl so that even
1183 case-blind systems can see the difference.
1185 d_PRIi64 (quadfio.U):
1186 This variable conditionally defines the PERL_PRIi64 symbol, which
1187 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1189 d_PRIo64 (quadfio.U):
1190 This variable conditionally defines the PERL_PRIo64 symbol, which
1191 indiciates that stdio has a symbol to print 64-bit octal numbers.
1193 d_PRIu64 (quadfio.U):
1194 This variable conditionally defines the PERL_PRIu64 symbol, which
1195 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1198 d_PRIx64 (quadfio.U):
1199 This variable conditionally defines the PERL_PRIx64 symbol, which
1200 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1202 d_PRIXU64 (quadfio.U):
1203 This variable conditionally defines the PERL_PRIXU64 symbol, which
1204 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1205 The 'U' in the name is to separate this from d_PRIx64 so that even
1206 case-blind systems can see the difference.
1208 d_pthread_yield (d_pthread_y.U):
1209 This variable conditionally defines the HAS_PTHREAD_YIELD
1210 symbol if the pthread_yield routine is available to yield
1211 the execution of the current thread.
1214 This variable conditionally defines PWAGE, which indicates
1215 that struct passwd contains pw_age.
1217 d_pwchange (i_pwd.U):
1218 This variable conditionally defines PWCHANGE, which indicates
1219 that struct passwd contains pw_change.
1221 d_pwclass (i_pwd.U):
1222 This variable conditionally defines PWCLASS, which indicates
1223 that struct passwd contains pw_class.
1225 d_pwcomment (i_pwd.U):
1226 This variable conditionally defines PWCOMMENT, which indicates
1227 that struct passwd contains pw_comment.
1229 d_pwexpire (i_pwd.U):
1230 This variable conditionally defines PWEXPIRE, which indicates
1231 that struct passwd contains pw_expire.
1233 d_pwgecos (i_pwd.U):
1234 This variable conditionally defines PWGECOS, which indicates
1235 that struct passwd contains pw_gecos.
1237 d_pwpasswd (i_pwd.U):
1238 This variable conditionally defines PWPASSWD, which indicates
1239 that struct passwd contains pw_passwd.
1241 d_pwquota (i_pwd.U):
1242 This variable conditionally defines PWQUOTA, which indicates
1243 that struct passwd contains pw_quota.
1245 d_qgcvt (d_qgcvt.U):
1246 This variable conditionally defines the HAS_QGCVT symbol, which
1247 indicates to the C program that the qgcvt() routine is available.
1249 d_quad (quadtype.U):
1250 This variable, if defined, tells that there's a 64-bit integer type,
1253 d_readdir (d_readdir.U):
1254 This variable conditionally defines HAS_READDIR if readdir() is
1255 available to read directory entries.
1257 d_readlink (d_readlink.U):
1258 This variable conditionally defines the HAS_READLINK symbol, which
1259 indicates to the C program that the readlink() routine is available
1260 to read the value of a symbolic link.
1262 d_readv (d_readv.U):
1263 This variable conditionally defines the HAS_READV symbol, which
1264 indicates to the C program that the readv() routine is available.
1266 d_realpath (d_realpath.U):
1267 This variable conditionally defines the HAS_REALPATH symbol, which
1268 indicates to the C program that the realpath() routine is available.
1270 d_recvmsg (d_recvmsg.U):
1271 This variable conditionally defines the HAS_RECVMSG symbol, which
1272 indicates to the C program that the recvmsg() routine is available.
1274 d_rename (d_rename.U):
1275 This variable conditionally defines the HAS_RENAME symbol, which
1276 indicates to the C program that the rename() routine is available
1279 d_rewinddir (d_readdir.U):
1280 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1283 d_rmdir (d_rmdir.U):
1284 This variable conditionally defines HAS_RMDIR if rmdir() is
1285 available to remove directories.
1287 d_safebcpy (d_safebcpy.U):
1288 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1289 the bcopy() routine can do overlapping copies.
1291 d_safemcpy (d_safemcpy.U):
1292 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1293 the memcpy() routine can do overlapping copies.
1295 d_sanemcmp (d_sanemcmp.U):
1296 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1297 the memcpy() routine is available and can be used to compare relative
1298 magnitudes of chars with their high bits set.
1300 d_sbrkproto (d_sbrkproto.U):
1301 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1302 which indicates to the C program that the system provides
1303 a prototype for the sbrk() function. Otherwise, it is
1304 up to the program to supply one.
1306 d_sched_yield (d_pthread_y.U):
1307 This variable conditionally defines the HAS_SCHED_YIELD
1308 symbol if the sched_yield routine is available to yield
1309 the execution of the current thread.
1311 d_scm_rights (d_socket.U):
1312 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1313 which indicates that the SCM_RIGHTS is available. #ifdef is
1314 not enough because it may be an enum, glibc has been known to do this.
1316 d_SCNfldbl (longdblfio.U):
1317 This variable conditionally defines the PERL_PRIfldbl symbol, which
1318 indiciates that stdio has a symbol to scan long doubles.
1320 d_seekdir (d_readdir.U):
1321 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1324 d_select (d_select.U):
1325 This variable conditionally defines HAS_SELECT if select() is
1326 available to select active file descriptors. A <sys/time.h>
1327 inclusion may be necessary for the timeout field.
1330 This variable conditionally defines the HAS_SEM symbol, which
1331 indicates that the entire sem*(2) library is present.
1333 d_semctl (d_semctl.U):
1334 This variable conditionally defines the HAS_SEMCTL symbol, which
1335 indicates to the C program that the semctl() routine is available.
1337 d_semctl_semid_ds (d_union_semun.U):
1338 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1339 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1341 d_semctl_semun (d_union_semun.U):
1342 This variable conditionally defines USE_SEMCTL_SEMUN, which
1343 indicates that union semun is to be used for semctl IPC_STAT.
1345 d_semget (d_semget.U):
1346 This variable conditionally defines the HAS_SEMGET symbol, which
1347 indicates to the C program that the semget() routine is available.
1349 d_semop (d_semop.U):
1350 This variable conditionally defines the HAS_SEMOP symbol, which
1351 indicates to the C program that the semop() routine is available.
1353 d_sendmsg (d_sendmsg.U):
1354 This variable conditionally defines the HAS_SENDMSG symbol, which
1355 indicates to the C program that the sendmsg() routine is available.
1357 d_setegid (d_setegid.U):
1358 This variable conditionally defines the HAS_SETEGID symbol, which
1359 indicates to the C program that the setegid() routine is available
1360 to change the effective gid of the current program.
1362 d_seteuid (d_seteuid.U):
1363 This variable conditionally defines the HAS_SETEUID symbol, which
1364 indicates to the C program that the seteuid() routine is available
1365 to change the effective uid of the current program.
1367 d_setgrent (d_setgrent.U):
1368 This variable conditionally defines the HAS_SETGRENT symbol, which
1369 indicates to the C program that the setgrent() routine is available
1370 for initializing sequential access to the group database.
1372 d_setgrps (d_setgrps.U):
1373 This variable conditionally defines the HAS_SETGROUPS symbol, which
1374 indicates to the C program that the setgroups() routine is available
1375 to set the list of process groups.
1377 d_sethent (d_sethent.U):
1378 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1381 d_setitimer (d_setitimer.U):
1382 This variable conditionally defines the HAS_SETITIMER symbol, which
1383 indicates to the C program that the setitimer() routine is available.
1385 d_setlinebuf (d_setlnbuf.U):
1386 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1387 indicates to the C program that the setlinebuf() routine is available
1388 to change stderr or stdout from block-buffered or unbuffered to a
1391 d_setlocale (d_setlocale.U):
1392 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1393 available to handle locale-specific ctype implementations.
1395 d_setnent (d_setnent.U):
1396 This variable conditionally defines HAS_SETNETENT if setnetent() is
1399 d_setpent (d_setpent.U):
1400 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1403 d_setpgid (d_setpgid.U):
1404 This variable conditionally defines the HAS_SETPGID symbol if the
1405 setpgid(pid, gpid) function is available to set process group ID.
1407 d_setpgrp2 (d_setpgrp2.U):
1408 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1409 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1410 is available to set the current process group.
1412 d_setpgrp (d_setpgrp.U):
1413 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1414 available to set the current process group.
1416 d_setprior (d_setprior.U):
1417 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1418 is available to set a process's priority.
1420 d_setproctitle (d_setproctitle.U):
1421 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1422 which indicates to the C program that the setproctitle() routine
1425 d_setpwent (d_setpwent.U):
1426 This variable conditionally defines the HAS_SETPWENT symbol, which
1427 indicates to the C program that the setpwent() routine is available
1428 for initializing sequential access to the passwd database.
1430 d_setregid (d_setregid.U):
1431 This variable conditionally defines HAS_SETREGID if setregid() is
1432 available to change the real and effective gid of the current
1435 d_setresgid (d_setregid.U):
1436 This variable conditionally defines HAS_SETRESGID if setresgid() is
1437 available to change the real, effective and saved gid of the current
1440 d_setresuid (d_setreuid.U):
1441 This variable conditionally defines HAS_SETREUID if setresuid() is
1442 available to change the real, effective and saved uid of the current
1445 d_setreuid (d_setreuid.U):
1446 This variable conditionally defines HAS_SETREUID if setreuid() is
1447 available to change the real and effective uid of the current
1450 d_setrgid (d_setrgid.U):
1451 This variable conditionally defines the HAS_SETRGID symbol, which
1452 indicates to the C program that the setrgid() routine is available
1453 to change the real gid of the current program.
1455 d_setruid (d_setruid.U):
1456 This variable conditionally defines the HAS_SETRUID symbol, which
1457 indicates to the C program that the setruid() routine is available
1458 to change the real uid of the current program.
1460 d_setsent (d_setsent.U):
1461 This variable conditionally defines HAS_SETSERVENT if setservent() is
1464 d_setsid (d_setsid.U):
1465 This variable conditionally defines HAS_SETSID if setsid() is
1466 available to set the process group ID.
1468 d_setvbuf (d_setvbuf.U):
1469 This variable conditionally defines the HAS_SETVBUF symbol, which
1470 indicates to the C program that the setvbuf() routine is available
1471 to change buffering on an open stdio stream.
1474 This variable conditionally defines the USE_SFIO symbol,
1475 and indicates whether sfio is available (and should be used).
1478 This variable conditionally defines the HAS_SHM symbol, which
1479 indicates that the entire shm*(2) library is present.
1481 d_shmat (d_shmat.U):
1482 This variable conditionally defines the HAS_SHMAT symbol, which
1483 indicates to the C program that the shmat() routine is available.
1485 d_shmatprototype (d_shmat.U):
1486 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1487 symbol, which indicates that sys/shm.h has a prototype for
1490 d_shmctl (d_shmctl.U):
1491 This variable conditionally defines the HAS_SHMCTL symbol, which
1492 indicates to the C program that the shmctl() routine is available.
1494 d_shmdt (d_shmdt.U):
1495 This variable conditionally defines the HAS_SHMDT symbol, which
1496 indicates to the C program that the shmdt() routine is available.
1498 d_shmget (d_shmget.U):
1499 This variable conditionally defines the HAS_SHMGET symbol, which
1500 indicates to the C program that the shmget() routine is available.
1502 d_sigaction (d_sigaction.U):
1503 This variable conditionally defines the HAS_SIGACTION symbol, which
1504 indicates that the Vr4 sigaction() routine is available.
1506 d_sigprocmask (d_sigprocmask.U):
1507 This variable conditionally defines HAS_SIGPROCMASK
1508 if sigprocmask() is available to examine or change the signal mask
1509 of the calling process.
1511 d_sigsetjmp (d_sigsetjmp.U):
1512 This variable conditionally defines the HAS_SIGSETJMP symbol,
1513 which indicates that the sigsetjmp() routine is available to
1514 call setjmp() and optionally save the process's signal mask.
1516 d_sockatmark (d_sockatmark.U):
1517 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1518 indicates to the C program that the sockatmark() routine is available.
1520 d_sockatmarkproto (d_sockatmarkproto.U):
1521 This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
1522 which indicates to the C program that the system provides
1523 a prototype for the sockatmark() function. Otherwise, it is
1524 up to the program to supply one.
1526 d_socket (d_socket.U):
1527 This variable conditionally defines HAS_SOCKET, which indicates
1528 that the BSD socket interface is supported.
1530 d_socklen_t (d_socklen_t.U):
1531 This symbol will be defined if the C compiler supports socklen_t.
1533 d_sockpair (d_socket.U):
1534 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1535 indicates that the BSD socketpair() is supported.
1537 d_socks5_init (d_socks5_init.U):
1538 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1539 indicates to the C program that the socks5_init() routine is available.
1541 d_sqrtl (d_sqrtl.U):
1542 This variable conditionally defines the HAS_SQRTL symbol, which
1543 indicates to the C program that the sqrtl() routine is available.
1545 d_sresgproto (d_sresgproto.U):
1546 This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
1547 which indicates to the C program that the system provides
1548 a prototype for the setresgid() function. Otherwise, it is
1549 up to the program to supply one.
1551 d_sresuproto (d_sresuproto.U):
1552 This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
1553 which indicates to the C program that the system provides
1554 a prototype for the setresuid() function. Otherwise, it is
1555 up to the program to supply one.
1557 d_statblks (d_statblks.U):
1558 This variable conditionally defines USE_STAT_BLOCKS
1559 if this system has a stat structure declaring
1560 st_blksize and st_blocks.
1562 d_statfs_f_flags (d_statfs_f_flags.U):
1563 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1564 symbol, which indicates to struct statfs from has f_flags member.
1565 This kind of struct statfs is coming from sys/mount.h (BSD),
1566 not from sys/statfs.h (SYSV).
1568 d_statfs_s (d_statfs_s.U):
1569 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1570 which indicates that the struct statfs is supported.
1572 d_statvfs (d_statvfs.U):
1573 This variable conditionally defines the HAS_STATVFS symbol, which
1574 indicates to the C program that the statvfs() routine is available.
1576 d_stdio_cnt_lval (d_stdstdio.U):
1577 This variable conditionally defines STDIO_CNT_LVALUE if the
1578 FILE_cnt macro can be used as an lvalue.
1580 d_stdio_ptr_lval (d_stdstdio.U):
1581 This variable conditionally defines STDIO_PTR_LVALUE if the
1582 FILE_ptr macro can be used as an lvalue.
1584 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1585 This symbol is defined if using the FILE_ptr macro as an lvalue
1586 to increase the pointer by n leaves File_cnt(fp) unchanged.
1588 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1589 This symbol is defined if using the FILE_ptr macro as an lvalue
1590 to increase the pointer by n has the side effect of decreasing the
1591 value of File_cnt(fp) by n.
1593 d_stdio_stream_array (stdio_streams.U):
1594 This variable tells whether there is an array holding
1597 d_stdiobase (d_stdstdio.U):
1598 This variable conditionally defines USE_STDIO_BASE if this system
1599 has a FILE structure declaring a usable _base field (or equivalent)
1602 d_stdstdio (d_stdstdio.U):
1603 This variable conditionally defines USE_STDIO_PTR if this system
1604 has a FILE structure declaring usable _ptr and _cnt fields (or
1605 equivalent) in stdio.h.
1607 d_strchr (d_strchr.U):
1608 This variable conditionally defines HAS_STRCHR if strchr() and
1609 strrchr() are available for string searching.
1611 d_strcoll (d_strcoll.U):
1612 This variable conditionally defines HAS_STRCOLL if strcoll() is
1613 available to compare strings using collating information.
1615 d_strctcpy (d_strctcpy.U):
1616 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1617 indicates to the C program that this C compiler knows how to copy
1620 d_strerrm (d_strerror.U):
1621 This variable holds what Strerrr is defined as to translate an error
1622 code condition into an error message string. It could be 'strerror'
1623 or a more complex macro emulating strrror with sys_errlist[], or the
1624 "unknown" string when both strerror and sys_errlist are missing.
1626 d_strerror (d_strerror.U):
1627 This variable conditionally defines HAS_STRERROR if strerror() is
1628 available to translate error numbers to strings.
1630 d_strftime (d_strftime.U):
1631 This variable conditionally defines the HAS_STRFTIME symbol, which
1632 indicates to the C program that the strftime() routine is available.
1634 d_strtod (d_strtod.U):
1635 This variable conditionally defines the HAS_STRTOD symbol, which
1636 indicates to the C program that the strtod() routine is available
1637 to provide better numeric string conversion than atof().
1639 d_strtol (d_strtol.U):
1640 This variable conditionally defines the HAS_STRTOL symbol, which
1641 indicates to the C program that the strtol() routine is available
1642 to provide better numeric string conversion than atoi() and friends.
1644 d_strtold (d_strtold.U):
1645 This variable conditionally defines the HAS_STRTOLD symbol, which
1646 indicates to the C program that the strtold() routine is available.
1648 d_strtoll (d_strtoll.U):
1649 This variable conditionally defines the HAS_STRTOLL symbol, which
1650 indicates to the C program that the strtoll() routine is available.
1652 d_strtoq (d_strtoq.U):
1653 This variable conditionally defines the HAS_STRTOQ symbol, which
1654 indicates to the C program that the strtoq() routine is available.
1656 d_strtoul (d_strtoul.U):
1657 This variable conditionally defines the HAS_STRTOUL symbol, which
1658 indicates to the C program that the strtoul() routine is available
1659 to provide conversion of strings to unsigned long.
1661 d_strtoull (d_strtoull.U):
1662 This variable conditionally defines the HAS_STRTOULL symbol, which
1663 indicates to the C program that the strtoull() routine is available.
1665 d_strtouq (d_strtouq.U):
1666 This variable conditionally defines the HAS_STRTOUQ symbol, which
1667 indicates to the C program that the strtouq() routine is available.
1669 d_strxfrm (d_strxfrm.U):
1670 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1671 available to transform strings.
1673 d_suidsafe (d_dosuid.U):
1674 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1675 if setuid scripts can be secure. This test looks in /dev/fd/.
1677 d_symlink (d_symlink.U):
1678 This variable conditionally defines the HAS_SYMLINK symbol, which
1679 indicates to the C program that the symlink() routine is available
1680 to create symbolic links.
1682 d_syscall (d_syscall.U):
1683 This variable conditionally defines HAS_SYSCALL if syscall() is
1684 available call arbitrary system calls.
1686 d_syscallproto (d_syscallproto.U):
1687 This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
1688 which indicates to the C program that the system provides
1689 a prototype for the syscall() function. Otherwise, it is
1690 up to the program to supply one.
1692 d_sysconf (d_sysconf.U):
1693 This variable conditionally defines the HAS_SYSCONF symbol, which
1694 indicates to the C program that the sysconf() routine is available
1695 to determine system related limits and options.
1697 d_sysernlst (d_strerror.U):
1698 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1699 is available to translate error numbers to the symbolic name.
1701 d_syserrlst (d_strerror.U):
1702 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1703 available to translate error numbers to strings.
1705 d_system (d_system.U):
1706 This variable conditionally defines HAS_SYSTEM if system() is
1707 available to issue a shell command.
1709 d_tcgetpgrp (d_tcgtpgrp.U):
1710 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1711 indicates to the C program that the tcgetpgrp() routine is available.
1712 to get foreground process group ID.
1714 d_tcsetpgrp (d_tcstpgrp.U):
1715 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1716 indicates to the C program that the tcsetpgrp() routine is available
1717 to set foreground process group ID.
1719 d_telldir (d_readdir.U):
1720 This variable conditionally defines HAS_TELLDIR if telldir() is
1723 d_telldirproto (d_telldirproto.U):
1724 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1725 which indicates to the C program that the system provides
1726 a prototype for the telldir() function. Otherwise, it is
1727 up to the program to supply one.
1730 This variable conditionally defines the HAS_TIME symbol, which indicates
1731 that the time() routine exists. The time() routine is normaly
1732 provided on UNIX systems.
1734 d_times (d_times.U):
1735 This variable conditionally defines the HAS_TIMES symbol, which indicates
1736 that the times() routine exists. The times() routine is normaly
1737 provided on UNIX systems. You may have to include <sys/times.h>.
1739 d_truncate (d_truncate.U):
1740 This variable conditionally defines HAS_TRUNCATE if truncate() is
1741 available to truncate files.
1743 d_tzname (d_tzname.U):
1744 This variable conditionally defines HAS_TZNAME if tzname[] is
1745 available to access timezone names.
1747 d_u32align (d_u32align.U):
1748 This variable tells whether you must access character data
1749 through U32-aligned pointers.
1751 d_ualarm (d_ualarm.U):
1752 This variable conditionally defines the HAS_UALARM symbol, which
1753 indicates to the C program that the ualarm() routine is available.
1755 d_umask (d_umask.U):
1756 This variable conditionally defines the HAS_UMASK symbol, which
1757 indicates to the C program that the umask() routine is available.
1758 to set and get the value of the file creation mask.
1760 d_uname (d_gethname.U):
1761 This variable conditionally defines the HAS_UNAME symbol, which
1762 indicates to the C program that the uname() routine may be
1763 used to derive the host name.
1765 d_union_semun (d_union_semun.U):
1766 This variable conditionally defines HAS_UNION_SEMUN if the
1767 union semun is defined by including <sys/sem.h>.
1769 d_usleep (d_usleep.U):
1770 This variable conditionally defines HAS_USLEEP if usleep() is
1771 available to do high granularity sleeps.
1773 d_usleepproto (d_usleepproto.U):
1774 This variable conditionally defines the HAS_USLEEP_PROTO symbol,
1775 which indicates to the C program that the system provides
1776 a prototype for the usleep() function. Otherwise, it is
1777 up to the program to supply one.
1779 d_ustat (d_ustat.U):
1780 This variable conditionally defines HAS_USTAT if ustat() is
1781 available to query file system statistics by dev_t.
1783 d_vendorarch (vendorarch.U):
1784 This variable conditionally defined PERL_VENDORARCH.
1786 d_vendorbin (vendorbin.U):
1787 This variable conditionally defines PERL_VENDORBIN.
1789 d_vendorlib (vendorlib.U):
1790 This variable conditionally defines PERL_VENDORLIB.
1792 d_vfork (d_vfork.U):
1793 This variable conditionally defines the HAS_VFORK symbol, which
1794 indicates the vfork() routine is available.
1796 d_void_closedir (d_closedir.U):
1797 This variable conditionally defines VOID_CLOSEDIR if closedir()
1798 does not return a value.
1800 d_voidsig (d_voidsig.U):
1801 This variable conditionally defines VOIDSIG if this system
1802 declares "void (*signal(...))()" in signal.h. The old way was to
1803 declare it as "int (*signal(...))()".
1805 d_voidtty (i_sysioctl.U):
1806 This variable conditionally defines USE_IOCNOTTY to indicate that the
1807 ioctl() call with TIOCNOTTY should be used to void tty association.
1808 Otherwise (on USG probably), it is enough to close the standard file
1809 decriptors and do a setpgrp().
1811 d_volatile (d_volatile.U):
1812 This variable conditionally defines the HASVOLATILE symbol, which
1813 indicates to the C program that this C compiler knows about the
1814 volatile declaration.
1816 d_vprintf (d_vprintf.U):
1817 This variable conditionally defines the HAS_VPRINTF symbol, which
1818 indicates to the C program that the vprintf() routine is available
1819 to printf with a pointer to an argument list.
1821 d_wait4 (d_wait4.U):
1822 This variable conditionally defines the HAS_WAIT4 symbol, which
1823 indicates the wait4() routine is available.
1825 d_waitpid (d_waitpid.U):
1826 This variable conditionally defines HAS_WAITPID if waitpid() is
1827 available to wait for child process.
1829 d_wcstombs (d_wcstombs.U):
1830 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1831 indicates to the C program that the wcstombs() routine is available
1832 to convert wide character strings to multibyte strings.
1834 d_wctomb (d_wctomb.U):
1835 This variable conditionally defines the HAS_WCTOMB symbol, which
1836 indicates to the C program that the wctomb() routine is available
1837 to convert a wide character to a multibyte.
1839 d_writev (d_writev.U):
1840 This variable conditionally defines the HAS_WRITEV symbol, which
1841 indicates to the C program that the writev() routine is available.
1844 This variable conditionally defines the symbol XENIX, which alerts
1845 the C program that it runs under Xenix.
1848 This variable is used internally by Configure to determine the
1849 full pathname (if any) of the date program. After Configure runs,
1850 the value is reset to a plain "date" and is not useful.
1852 db_hashtype (i_db.U):
1853 This variable contains the type of the hash structure element
1854 in the <db.h> header file. In older versions of DB, it was
1855 int, while in newer ones it is u_int32_t.
1857 db_prefixtype (i_db.U):
1858 This variable contains the type of the prefix structure element
1859 in the <db.h> header file. In older versions of DB, it was
1860 int, while in newer ones it is size_t.
1862 db_version_major (i_db.U):
1863 This variable contains the major version number of
1864 Berkeley DB found in the <db.h> header file.
1866 db_version_minor (i_db.U):
1867 This variable contains the minor version number of
1868 Berkeley DB found in the <db.h> header file.
1869 For DB version 1 this is always 0.
1871 db_version_patch (i_db.U):
1872 This variable contains the patch version number of
1873 Berkeley DB found in the <db.h> header file.
1874 For DB version 1 this is always 0.
1876 defvoidused (voidflags.U):
1877 This variable contains the default value of the VOIDUSED symbol (15).
1879 direntrytype (i_dirent.U):
1880 This symbol is set to 'struct direct' or 'struct dirent' depending on
1881 whether dirent is available or not. You should use this pseudo type to
1882 portably declare your directory entries.
1885 This variable contains the extension that is to be used for the
1886 dynamically loaded modules that perl generaties.
1889 This variable contains the name of the dynamic loading file that
1890 will be used with the package.
1892 doublesize (doublesize.U):
1893 This variable contains the value of the DOUBLESIZE symbol, which
1894 indicates to the C program how many bytes there are in a double.
1896 drand01 (randfunc.U):
1897 Indicates the macro to be used to generate normalized
1898 random numbers. Uses randfunc, often divided by
1899 (double) (((unsigned long) 1 << randbits)) in order to
1900 normalize the result.
1901 In C programs, the macro 'Drand01' is mapped to drand01.
1903 dynamic_ext (Extensions.U):
1904 This variable holds a list of XS extension files we want to
1905 link dynamically into the package. It is used by Makefile.
1907 eagain (nblock_io.U):
1908 This variable bears the symbolic errno code set by read() when no
1909 data is present on the file and non-blocking I/O was enabled (otherwise,
1910 read() blocks naturally).
1913 This variable conditionally defines EBCDIC if this
1914 system uses EBCDIC encoding. Among other things, this
1915 means that the character ranges are not contiguous.
1919 This variable is used internally by Configure to determine the
1920 full pathname (if any) of the echo program. After Configure runs,
1921 the value is reset to a plain "echo" and is not useful.
1924 This variable is used internally by Configure to determine the
1925 full pathname (if any) of the egrep program. After Configure runs,
1926 the value is reset to a plain "egrep" and is not useful.
1929 This variable is defined but not used by Configure.
1930 The value is a plain '' and is not useful.
1933 When running under Eunice this variable contains a command which will
1934 convert a shell script to the proper form of text file for it to be
1935 executable by the shell. On other systems it is a no-op.
1938 This is an old synonym for _exe.
1941 This variable is used internally by Configure to determine the
1942 full pathname (if any) of the expr program. After Configure runs,
1943 the value is reset to a plain "expr" and is not useful.
1945 extensions (Extensions.U):
1946 This variable holds a list of all extension files (both XS and
1947 non-xs linked into the package. It is propagated to Config.pm
1948 and is typically used to test whether a particular extesion
1951 fflushall (fflushall.U):
1952 This symbol, if defined, tells that to flush
1953 all pending stdio output one must loop through all
1954 the stdio file handles stored in an array and fflush them.
1955 Note that if fflushNULL is defined, fflushall will not
1956 even be probed for and will be left undefined.
1958 fflushNULL (fflushall.U):
1959 This symbol, if defined, tells that fflush(NULL) does flush
1960 all pending stdio output.
1963 This variable is defined but not used by Configure.
1964 The value is a plain '' and is not useful.
1966 firstmakefile (Unix.U):
1967 This variable defines the first file searched by make. On unix,
1968 it is makefile (then Makefile). On case-insensitive systems,
1969 it might be something else. This is only used to deal with
1970 convoluted make depend tricks.
1973 This variable is defined but not used by Configure.
1974 The value is a plain '' and is not useful.
1976 fpossize (fpossize.U):
1977 This variable contains the size of a fpostype in bytes.
1979 fpostype (fpostype.U):
1980 This variable defines Fpos_t to be something like fpos_t, long,
1981 uint, or whatever type is used to declare file positions in libc.
1983 freetype (mallocsrc.U):
1984 This variable contains the return type of free(). It is usually
1985 void, but occasionally int.
1988 This variable contains the full pathname to 'ar', whether or
1989 not the user has specified 'portability'. This is only used
1993 This variable contains the full pathname to 'csh', whether or
1994 not the user has specified 'portability'. This is only used
1995 in the compiled C program, and we assume that all systems which
1996 can share this executable will have the same full pathname to
1999 full_sed (Loc_sed.U):
2000 This variable contains the full pathname to 'sed', whether or
2001 not the user has specified 'portability'. This is only used
2002 in the compiled C program, and we assume that all systems which
2003 can share this executable will have the same full pathname to
2006 gccosandvers (gccvers.U):
2007 If GNU cc (gcc) is used, this variable the operating system and
2008 version used to compile the gcc. It is set to '' if not gcc,
2009 or if nothing useful can be parsed as the os version.
2011 gccversion (gccvers.U):
2012 If GNU cc (gcc) is used, this variable holds '1' or '2' to
2013 indicate whether the compiler is version 1 or 2. This is used in
2014 setting some of the default cflags. It is set to '' if not gcc.
2017 This variable contains the format string used for printing a Gid_t.
2019 gidsign (gidsign.U):
2020 This variable contains the signedness of a gidtype.
2021 1 for unsigned, -1 for signed.
2023 gidsize (gidsize.U):
2024 This variable contains the size of a gidtype in bytes.
2026 gidtype (gidtype.U):
2027 This variable defines Gid_t to be something like gid_t, int,
2028 ushort, or whatever type is used to declare the return type
2029 of getgid(). Typically, it is the type of group ids in the kernel.
2032 This variable holds the general path (space-separated) used to
2033 find libraries. It may contain directories that do not exist on
2034 this platform, libpth is the cleaned-up version.
2037 This variable is used internally by Configure to determine the
2038 full pathname (if any) of the grep program. After Configure runs,
2039 the value is reset to a plain "grep" and is not useful.
2042 This variable contains a command that produces the text of the
2043 /etc/group file. This is normally "cat /etc/group", but can be
2044 "ypcat group" when NIS is used.
2045 On some systems, such as os390, there may be no equivalent
2046 command, in which case this variable is unset.
2048 groupstype (groupstype.U):
2049 This variable defines Groups_t to be something like gid_t, int,
2050 ushort, or whatever type is used for the second argument to
2051 getgroups() and setgroups(). Usually, this is the same as
2052 gidtype (gid_t), but sometimes it isn't.
2055 This variable is used internally by Configure to determine the
2056 full pathname (if any) of the gzip program. After Configure runs,
2057 the value is reset to a plain "gzip" and is not useful.
2059 h_fcntl (h_fcntl.U):
2060 This is variable gets set in various places to tell i_fcntl that
2061 <fcntl.h> should be included.
2063 h_sysfile (h_sysfile.U):
2064 This is variable gets set in various places to tell i_sys_file that
2065 <sys/file.h> should be included.
2068 Gives the type of hints used for previous answers. May be one of
2069 "default", "recommended" or "previous".
2072 This variable contains a command that produces the text of the
2073 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2074 "ypcat hosts" when NIS is used.
2075 On some systems, such as os390, there may be no equivalent
2076 command, in which case this variable is unset.
2079 This variable is the size of an I16 in bytes.
2082 This variable contains the C type used for Perl's I16.
2085 This variable is the size of an I32 in bytes.
2088 This variable contains the C type used for Perl's I32.
2091 This variable is the size of an I64 in bytes.
2094 This variable contains the C type used for Perl's I64.
2097 This variable is the size of an I8 in bytes.
2100 This variable contains the C type used for Perl's I8.
2102 i_arpainet (i_arpainet.U):
2103 This variable conditionally defines the I_ARPA_INET symbol,
2104 and indicates whether a C program should include <arpa/inet.h>.
2106 i_bsdioctl (i_sysioctl.U):
2107 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2108 indicates to the C program that <sys/bsdioctl.h> exists and should
2112 This variable conditionally defines the I_DB symbol, and indicates
2113 whether a C program may include Berkeley's DB include file <db.h>.
2116 This variable conditionally defines the I_DBM symbol, which
2117 indicates to the C program that <dbm.h> exists and should
2120 i_dirent (i_dirent.U):
2121 This variable conditionally defines I_DIRENT, which indicates
2122 to the C program that it should include <dirent.h>.
2125 This variable conditionally defines the I_DLD symbol, which
2126 indicates to the C program that <dld.h> (GNU dynamic loading)
2127 exists and should be included.
2129 i_dlfcn (i_dlfcn.U):
2130 This variable conditionally defines the I_DLFCN symbol, which
2131 indicates to the C program that <dlfcn.h> exists and should
2134 i_fcntl (i_fcntl.U):
2135 This variable controls the value of I_FCNTL (which tells
2136 the C program to include <fcntl.h>).
2138 i_float (i_float.U):
2139 This variable conditionally defines the I_FLOAT symbol, and indicates
2140 whether a C program may include <float.h> to get symbols like DBL_MAX
2141 or DBL_MIN, i.e. machine dependent floating point values.
2144 This variable conditionally defines the I_GDBM symbol, which
2145 indicates to the C program that <gdbm.h> exists and should
2149 This variable conditionally defines the I_GRP symbol, and indicates
2150 whether a C program should include <grp.h>.
2152 i_iconv (i_iconv.U):
2153 This variable conditionally defines the I_ICONV symbol, and indicates
2154 whether a C program should include <iconv.h>.
2156 i_ieeefp (i_ieeefp.U):
2157 This variable conditionally defines the I_IEEEFP symbol, and indicates
2158 whether a C program should include <ieeefp.h>.
2160 i_inttypes (i_inttypes.U):
2161 This variable conditionally defines the I_INTTYPES symbol,
2162 and indicates whether a C program should include <inttypes.h>.
2164 i_libutil (i_libutil.U):
2165 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2166 whether a C program should include <libutil.h>.
2168 i_limits (i_limits.U):
2169 This variable conditionally defines the I_LIMITS symbol, and indicates
2170 whether a C program may include <limits.h> to get symbols like WORD_BIT
2173 i_locale (i_locale.U):
2174 This variable conditionally defines the I_LOCALE symbol,
2175 and indicates whether a C program should include <locale.h>.
2177 i_machcthr (i_machcthr.U):
2178 This variable conditionally defines the I_MACH_CTHREADS symbol,
2179 and indicates whether a C program should include <mach/cthreads.h>.
2181 i_malloc (i_malloc.U):
2182 This variable conditionally defines the I_MALLOC symbol, and indicates
2183 whether a C program should include <malloc.h>.
2186 This variable conditionally defines the I_MATH symbol, and indicates
2187 whether a C program may include <math.h>.
2189 i_memory (i_memory.U):
2190 This variable conditionally defines the I_MEMORY symbol, and indicates
2191 whether a C program should include <memory.h>.
2193 i_mntent (i_mntent.U):
2194 This variable conditionally defines the I_MNTENT symbol, and indicates
2195 whether a C program should include <mntent.h>.
2198 This variable conditionally defines the I_NDBM symbol, which
2199 indicates to the C program that <ndbm.h> exists and should
2202 i_netdb (i_netdb.U):
2203 This variable conditionally defines the I_NETDB symbol, and indicates
2204 whether a C program should include <netdb.h>.
2206 i_neterrno (i_neterrno.U):
2207 This variable conditionally defines the I_NET_ERRNO symbol, which
2208 indicates to the C program that <net/errno.h> exists and should
2211 i_netinettcp (i_netinettcp.U):
2212 This variable conditionally defines the I_NETINET_TCP symbol,
2213 and indicates whether a C program should include <netinet/tcp.h>.
2216 This variable conditionally defines I_NETINET_IN, which indicates
2217 to the C program that it should include <netinet/in.h>. Otherwise,
2218 you may try <sys/in.h>.
2221 This variable conditionally defines the I_POLL symbol, and indicates
2222 whether a C program should include <poll.h>.
2225 This variable conditionally defines the I_PROT symbol, and indicates
2226 whether a C program should include <prot.h>.
2228 i_pthread (i_pthread.U):
2229 This variable conditionally defines the I_PTHREAD symbol,
2230 and indicates whether a C program should include <pthread.h>.
2233 This variable conditionally defines I_PWD, which indicates
2234 to the C program that it should include <pwd.h>.
2236 i_rpcsvcdbm (i_dbm.U):
2237 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2238 indicates to the C program that <rpcsvc/dbm.h> exists and should
2239 be included. Some System V systems might need this instead of <dbm.h>.
2242 This variable conditionally defines the I_SFIO symbol,
2243 and indicates whether a C program should include <sfio.h>.
2245 i_sgtty (i_termio.U):
2246 This variable conditionally defines the I_SGTTY symbol, which
2247 indicates to the C program that it should include <sgtty.h> rather
2250 i_shadow (i_shadow.U):
2251 This variable conditionally defines the I_SHADOW symbol, and indicates
2252 whether a C program should include <shadow.h>.
2254 i_socks (i_socks.U):
2255 This variable conditionally defines the I_SOCKS symbol, and indicates
2256 whether a C program should include <socks.h>.
2258 i_stdarg (i_varhdr.U):
2259 This variable conditionally defines the I_STDARG symbol, which
2260 indicates to the C program that <stdarg.h> exists and should
2263 i_stddef (i_stddef.U):
2264 This variable conditionally defines the I_STDDEF symbol, which
2265 indicates to the C program that <stddef.h> exists and should
2268 i_stdlib (i_stdlib.U):
2269 This variable conditionally defines the I_STDLIB symbol, which
2270 indicates to the C program that <stdlib.h> exists and should
2273 i_string (i_string.U):
2274 This variable conditionally defines the I_STRING symbol, which
2275 indicates that <string.h> should be included rather than <strings.h>.
2277 i_sunmath (i_sunmath.U):
2278 This variable conditionally defines the I_SUNMATH symbol, and indicates
2279 whether a C program should include <sunmath.h>.
2281 i_sysaccess (i_sysaccess.U):
2282 This variable conditionally defines the I_SYS_ACCESS symbol,
2283 and indicates whether a C program should include <sys/access.h>.
2285 i_sysdir (i_sysdir.U):
2286 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2287 whether a C program should include <sys/dir.h>.
2289 i_sysfile (i_sysfile.U):
2290 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2291 whether a C program should include <sys/file.h> to get R_OK and friends.
2293 i_sysfilio (i_sysioctl.U):
2294 This variable conditionally defines the I_SYS_FILIO symbol, which
2295 indicates to the C program that <sys/filio.h> exists and should
2296 be included in preference to <sys/ioctl.h>.
2299 This variable conditionally defines I_SYS_IN, which indicates
2300 to the C program that it should include <sys/in.h> instead of
2303 i_sysioctl (i_sysioctl.U):
2304 This variable conditionally defines the I_SYS_IOCTL symbol, which
2305 indicates to the C program that <sys/ioctl.h> exists and should
2308 i_syslog (i_syslog.U):
2309 This variable conditionally defines the I_SYSLOG symbol,
2310 and indicates whether a C program should include <syslog.h>.
2312 i_sysmman (i_sysmman.U):
2313 This variable conditionally defines the I_SYS_MMAN symbol, and
2314 indicates whether a C program should include <sys/mman.h>.
2316 i_sysmode (i_sysmode.U):
2317 This variable conditionally defines the I_SYSMODE symbol,
2318 and indicates whether a C program should include <sys/mode.h>.
2320 i_sysmount (i_sysmount.U):
2321 This variable conditionally defines the I_SYSMOUNT symbol,
2322 and indicates whether a C program should include <sys/mount.h>.
2324 i_sysndir (i_sysndir.U):
2325 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2326 whether a C program should include <sys/ndir.h>.
2328 i_sysparam (i_sysparam.U):
2329 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2330 whether a C program should include <sys/param.h>.
2332 i_sysresrc (i_sysresrc.U):
2333 This variable conditionally defines the I_SYS_RESOURCE symbol,
2334 and indicates whether a C program should include <sys/resource.h>.
2336 i_syssecrt (i_syssecrt.U):
2337 This variable conditionally defines the I_SYS_SECURITY symbol,
2338 and indicates whether a C program should include <sys/security.h>.
2340 i_sysselct (i_sysselct.U):
2341 This variable conditionally defines I_SYS_SELECT, which indicates
2342 to the C program that it should include <sys/select.h> in order to
2343 get the definition of struct timeval.
2345 i_syssockio (i_sysioctl.U):
2346 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2347 C program that socket ioctl codes may be found in <sys/sockio.h>
2348 instead of <sys/ioctl.h>.
2350 i_sysstat (i_sysstat.U):
2351 This variable conditionally defines the I_SYS_STAT symbol,
2352 and indicates whether a C program should include <sys/stat.h>.
2354 i_sysstatfs (i_sysstatfs.U):
2355 This variable conditionally defines the I_SYSSTATFS symbol,
2356 and indicates whether a C program should include <sys/statfs.h>.
2358 i_sysstatvfs (i_sysstatvfs.U):
2359 This variable conditionally defines the I_SYSSTATVFS symbol,
2360 and indicates whether a C program should include <sys/statvfs.h>.
2362 i_systime (i_time.U):
2363 This variable conditionally defines I_SYS_TIME, which indicates
2364 to the C program that it should include <sys/time.h>.
2366 i_systimek (i_time.U):
2367 This variable conditionally defines I_SYS_TIME_KERNEL, which
2368 indicates to the C program that it should include <sys/time.h>
2369 with KERNEL defined.
2371 i_systimes (i_systimes.U):
2372 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2373 whether a C program should include <sys/times.h>.
2375 i_systypes (i_systypes.U):
2376 This variable conditionally defines the I_SYS_TYPES symbol,
2377 and indicates whether a C program should include <sys/types.h>.
2379 i_sysuio (i_sysuio.U):
2380 This variable conditionally defines the I_SYSUIO symbol, and indicates
2381 whether a C program should include <sys/uio.h>.
2383 i_sysun (i_sysun.U):
2384 This variable conditionally defines I_SYS_UN, which indicates
2385 to the C program that it should include <sys/un.h> to get UNIX
2386 domain socket definitions.
2388 i_sysutsname (i_sysutsname.U):
2389 This variable conditionally defines the I_SYSUTSNAME symbol,
2390 and indicates whether a C program should include <sys/utsname.h>.
2392 i_sysvfs (i_sysvfs.U):
2393 This variable conditionally defines the I_SYSVFS symbol,
2394 and indicates whether a C program should include <sys/vfs.h>.
2396 i_syswait (i_syswait.U):
2397 This variable conditionally defines I_SYS_WAIT, which indicates
2398 to the C program that it should include <sys/wait.h>.
2400 i_termio (i_termio.U):
2401 This variable conditionally defines the I_TERMIO symbol, which
2402 indicates to the C program that it should include <termio.h> rather
2405 i_termios (i_termio.U):
2406 This variable conditionally defines the I_TERMIOS symbol, which
2407 indicates to the C program that the POSIX <termios.h> file is
2411 This variable conditionally defines I_TIME, which indicates
2412 to the C program that it should include <time.h>.
2414 i_unistd (i_unistd.U):
2415 This variable conditionally defines the I_UNISTD symbol, and indicates
2416 whether a C program should include <unistd.h>.
2418 i_ustat (i_ustat.U):
2419 This variable conditionally defines the I_USTAT symbol, and indicates
2420 whether a C program should include <ustat.h>.
2422 i_utime (i_utime.U):
2423 This variable conditionally defines the I_UTIME symbol, and indicates
2424 whether a C program should include <utime.h>.
2426 i_values (i_values.U):
2427 This variable conditionally defines the I_VALUES symbol, and indicates
2428 whether a C program may include <values.h> to get symbols like MAXLONG
2431 i_varargs (i_varhdr.U):
2432 This variable conditionally defines I_VARARGS, which indicates
2433 to the C program that it should include <varargs.h>.
2435 i_varhdr (i_varhdr.U):
2436 Contains the name of the header to be included to get va_dcl definition.
2437 Typically one of varargs.h or stdarg.h.
2439 i_vfork (i_vfork.U):
2440 This variable conditionally defines the I_VFORK symbol, and indicates
2441 whether a C program should include vfork.h.
2443 ignore_versioned_solibs (libs.U):
2444 This variable should be non-empty if non-versioned shared
2445 libraries (libfoo.so.x.y) are to be ignored (because they
2446 cannot be linked against).
2448 inc_version_list (inc_version_list.U):
2449 This variable specifies the list of subdirectories in over
2450 which perl.c:incpush() and lib/lib.pm will automatically
2451 search when adding directories to @INC. The elements in
2452 the list are separated by spaces. This is only useful
2453 if you have a perl library directory tree structured like the
2454 default one. See INSTALL for how this works. The versioned
2455 site_perl directory was introduced in 5.005, so that is the
2456 lowest possible value.
2458 inc_version_list_init (inc_version_list.U):
2459 This variable holds the same list as inc_version_list, but
2460 each item is enclosed in double quotes and separated by commas,
2461 suitable for use in the PERL_INC_VERSION_LIST initialization.
2464 This variable must preceed the normal include path to get hte
2465 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2466 Value can be "" or "/bsd43" on mips.
2469 This variable is defined but not used by Configure.
2470 The value is a plain '' and is not useful.
2472 installarchlib (archlib.U):
2473 This variable is really the same as archlibexp but may differ on
2474 those systems using AFS. For extra portability, only this variable
2475 should be used in makefiles.
2478 This variable is the same as binexp unless AFS is running in which case
2479 the user is explicitely prompted for it. This variable should always
2480 be used in your makefiles for maximum portability.
2482 installman1dir (man1dir.U):
2483 This variable is really the same as man1direxp, unless you are using
2484 AFS in which case it points to the read/write location whereas
2485 man1direxp only points to the read-only access location. For extra
2486 portability, you should only use this variable within your makefiles.
2488 installman3dir (man3dir.U):
2489 This variable is really the same as man3direxp, unless you are using
2490 AFS in which case it points to the read/write location whereas
2491 man3direxp only points to the read-only access location. For extra
2492 portability, you should only use this variable within your makefiles.
2494 installprefix (installprefix.U):
2495 This variable holds the name of the directory below which
2496 "make install" will install the package. For most users, this
2497 is the same as prefix. However, it is useful for
2498 installing the software into a different (usually temporary)
2499 location after which it can be bundled up and moved somehow
2500 to the final location specified by prefix.
2502 installprefixexp (installprefix.U):
2503 This variable holds the full absolute path of installprefix
2504 with all ~-expansion done.
2506 installprivlib (privlib.U):
2507 This variable is really the same as privlibexp but may differ on
2508 those systems using AFS. For extra portability, only this variable
2509 should be used in makefiles.
2511 installscript (scriptdir.U):
2512 This variable is usually the same as scriptdirexp, unless you are on
2513 a system running AFS, in which case they may differ slightly. You
2514 should always use this variable within your makefiles for portability.
2516 installsitearch (sitearch.U):
2517 This variable is really the same as sitearchexp but may differ on
2518 those systems using AFS. For extra portability, only this variable
2519 should be used in makefiles.
2521 installsitebin (sitebin.U):
2522 This variable is usually the same as sitebinexp, unless you are on
2523 a system running AFS, in which case they may differ slightly. You
2524 should always use this variable within your makefiles for portability.
2526 installsitelib (sitelib.U):
2527 This variable is really the same as sitelibexp but may differ on
2528 those systems using AFS. For extra portability, only this variable
2529 should be used in makefiles.
2531 installstyle (installstyle.U):
2532 This variable describes the "style" of the perl installation.
2533 This is intended to be useful for tools that need to
2534 manipulate entire perl distributions. Perl itself doesn't use
2535 this to find its libraries -- the library directories are
2536 stored directly in Config.pm. Currently, there are only two
2537 styles: "lib" and "lib/perl5". The default library locations
2538 (e.g. privlib, sitelib) are either $prefix/lib or
2539 $prefix/lib/perl5. The former is useful if $prefix is a
2540 directory dedicated to perl (e.g. /opt/perl), while the latter
2541 is useful if $prefix is shared by many packages, e.g. if
2543 This may later be extended to include other information, so
2544 be careful with pattern-matching on the results.
2545 For compatibility with perl5.005 and earlier, the default
2546 setting is based on whether or not $prefix contains the string
2549 installusrbinperl (instubperl.U):
2550 This variable tells whether Perl should be installed also as
2551 /usr/bin/perl in addition to
2554 installvendorarch (vendorarch.U):
2555 This variable is really the same as vendorarchexp but may differ on
2556 those systems using AFS. For extra portability, only this variable
2557 should be used in makefiles.
2559 installvendorbin (vendorbin.U):
2560 This variable is really the same as vendorbinexp but may differ on
2561 those systems using AFS. For extra portability, only this variable
2562 should be used in makefiles.
2564 installvendorlib (vendorlib.U):
2565 This variable is really the same as vendorlibexp but may differ on
2566 those systems using AFS. For extra portability, only this variable
2567 should be used in makefiles.
2569 intsize (intsize.U):
2570 This variable contains the value of the INTSIZE symbol, which
2571 indicates to the C program how many bytes there are in an int.
2573 issymlink (issymlink.U):
2574 This variable holds the test command to test for a symbolic link
2575 (if they are supported). Typical values include 'test -h' and
2578 ivdformat (perlxvf.U):
2579 This variable contains the format string used for printing
2580 a Perl IV as a signed decimal integer.
2583 This variable is the size of an IV in bytes.
2586 This variable contains the C type used for Perl's IV.
2588 known_extensions (Extensions.U):
2589 This variable holds a list of all XS extensions included in
2593 This variable is defined but not used by Configure.
2594 The value is a plain '' and is not useful.
2597 This variable indicates the program to be used to link
2598 libraries for dynamic loading. On some systems, it is 'ld'.
2599 On ELF systems, it should be $cc. Mostly, we'll try to respect
2600 the hint file setting.
2602 lddlflags (dlsrc.U):
2603 This variable contains any special flags that might need to be
2604 passed to $ld to create a shared library suitable for dynamic
2605 loading. It is up to the makefile to use it. For hpux, it
2606 should be '-b'. For sunos 4.1, it is empty.
2608 ldflags (ccflags.U):
2609 This variable contains any additional C loader flags desired by
2610 the user. It is up to the Makefile to use this.
2612 ldflags_uselargefiles (uselfs.U):
2613 This variable contains the loader flags needed by large file builds
2614 and added to ldflags by hints files.
2616 ldlibpthname (libperl.U):
2617 This variable holds the name of the shared library
2618 search path, often LD_LIBRARY_PATH. To get an empty
2619 string, the hints file must set this to 'none'.
2622 This variable is used internally by Configure to determine the
2623 full pathname (if any) of the less program. After Configure runs,
2624 the value is reset to a plain "less" and is not useful.
2627 This is an old synonym for _a.
2630 This variable contains the location of the C library.
2632 libperl (libperl.U):
2633 The perl executable is obtained by linking perlmain.c with
2634 libperl, any static extensions (usually just DynaLoader),
2635 and any other libraries needed on this system. libperl
2636 is usually libperl.a, but can also be libperl.so.xxx if
2637 the user wishes to build a perl executable with a shared
2641 This variable holds the general path (space-separated) used to find
2642 libraries. It is intended to be used by other units.
2645 This variable holds the additional libraries we want to use.
2646 It is up to the Makefile to deal with it.
2649 This variable holds the directory names aka dirnames of the libraries
2650 we found and accepted, duplicates are removed.
2653 This variable holds the filenames aka basenames of the libraries
2654 we found and accepted.
2657 This variable holds the full pathnames of the libraries
2658 we found and accepted.
2661 This variable holds the directory names probed for libraries.
2663 libswanted (Myinit.U):
2664 This variable holds a list of all the libraries we want to
2665 search. The order is chosen to pick up the c library
2666 ahead of ucb or bsd libraries for SVR4.
2668 libswanted_uselargefiles (uselfs.U):
2669 This variable contains the libraries needed by large file builds
2670 and added to ldflags by hints files. It is a space separated list
2671 of the library names without the "lib" prefix or any suffix, just
2675 This variable is defined but not used by Configure.
2676 The value is a plain '' and is not useful.
2679 This variable is defined but not used by Configure.
2680 The value is a plain '' and is not useful.
2682 lkflags (ccflags.U):
2683 This variable contains any additional C partial linker flags desired by
2684 the user. It is up to the Makefile to use this.
2687 This variable is used internally by Configure to determine the
2688 full pathname (if any) of the ln program. After Configure runs,
2689 the value is reset to a plain "ln" and is not useful.
2692 This variable holds the name of the command to make
2693 symbolic links (if they are supported). It can be used
2694 in the Makefile. It is either 'ln -s' or 'ln'
2696 locincpth (ccflags.U):
2697 This variable contains a list of additional directories to be
2698 searched by the compiler. The appropriate '-I' directives will
2699 be added to ccflags. This is intended to simplify setting
2700 local directories from the Configure command line.
2701 It's not much, but it parallels the loclibpth stuff in libpth.U.
2703 loclibpth (libpth.U):
2704 This variable holds the paths (space-separated) used to find local
2705 libraries. It is prepended to libpth, and is intended to be easily
2706 set from the command line.
2708 longdblsize (d_longdbl.U):
2709 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2710 indicates to the C program how many bytes there are in a long double,
2711 if this system supports long doubles.
2713 longlongsize (d_longlong.U):
2714 This variable contains the value of the LONGLONGSIZE symbol, which
2715 indicates to the C program how many bytes there are in a long long,
2716 if this system supports long long.
2718 longsize (intsize.U):
2719 This variable contains the value of the LONGSIZE symbol, which
2720 indicates to the C program how many bytes there are in a long.
2723 This variable is defined but not used by Configure.
2724 The value is a plain '' and is not useful.
2727 This variable is defined but not used by Configure.
2728 The value is a plain '' and is not useful.
2731 This variable is used internally by Configure to determine the
2732 full pathname (if any) of the ls program. After Configure runs,
2733 the value is reset to a plain "ls" and is not useful.
2735 lseeksize (lseektype.U):
2736 This variable defines lseektype to be something like off_t, long,
2737 or whatever type is used to declare lseek offset's type in the
2738 kernel (which also appears to be lseek's return type).
2740 lseektype (lseektype.U):
2741 This variable defines lseektype to be something like off_t, long,
2742 or whatever type is used to declare lseek offset's type in the
2743 kernel (which also appears to be lseek's return type).
2746 This variable is defined but not used by Configure.
2747 The value is a plain '' and is not useful.
2750 This variable is defined but not used by Configure.
2751 The value is a plain '' and is not useful.
2754 This variable is used internally by Configure to determine the
2755 full pathname (if any) of the make program. After Configure runs,
2756 the value is reset to a plain "make" and is not useful.
2758 make_set_make (make.U):
2759 Some versions of 'make' set the variable MAKE. Others do not.
2760 This variable contains the string to be included in Makefile.SH
2761 so that MAKE is set if needed, and not if not needed.
2762 Possible values are:
2763 make_set_make='#' # If your make program handles this for you,
2764 make_set_make="MAKE=$make" # if it doesn't.
2765 I used a comment character so that we can distinguish a
2766 'set' value (from a previous config.sh or Configure '-D' option)
2767 from an uncomputed value.
2769 mallocobj (mallocsrc.U):
2770 This variable contains the name of the malloc.o that this package
2771 generates, if that malloc.o is preferred over the system malloc.
2772 Otherwise the value is null. This variable is intended for generating
2773 Makefiles. See mallocsrc.
2775 mallocsrc (mallocsrc.U):
2776 This variable contains the name of the malloc.c that comes with
2777 the package, if that malloc.c is preferred over the system malloc.
2778 Otherwise the value is null. This variable is intended for generating
2781 malloctype (mallocsrc.U):
2782 This variable contains the kind of ptr returned by malloc and realloc.
2784 man1dir (man1dir.U):
2785 This variable contains the name of the directory in which manual
2786 source pages are to be put. It is the responsibility of the
2787 Makefile.SH to get the value of this into the proper command.
2788 You must be prepared to do the ~name expansion yourself.
2790 man1direxp (man1dir.U):
2791 This variable is the same as the man1dir variable, but is filename
2792 expanded at configuration time, for convenient use in makefiles.
2794 man1ext (man1dir.U):
2795 This variable contains the extension that the manual page should
2796 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2799 man3dir (man3dir.U):
2800 This variable contains the name of the directory in which manual
2801 source pages are to be put. It is the responsibility of the
2802 Makefile.SH to get the value of this into the proper command.
2803 You must be prepared to do the ~name expansion yourself.
2805 man3direxp (man3dir.U):
2806 This variable is the same as the man3dir variable, but is filename
2807 expanded at configuration time, for convenient use in makefiles.
2809 man3ext (man3dir.U):
2810 This variable contains the extension that the manual page should
2811 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2815 This variable is used internally by Configure to determine the
2816 full pathname (if any) of the Mcc program. After Configure runs,
2817 the value is reset to a plain "Mcc" and is not useful.
2819 mips_type (usrinc.U):
2820 This variable holds the environment type for the mips system.
2821 Possible values are "BSD 4.3" and "System V".
2824 This variable is used internally by Configure to determine the
2825 full pathname (if any) of the mkdir program. After Configure runs,
2826 the value is reset to a plain "mkdir" and is not useful.
2828 mmaptype (d_mmap.U):
2829 This symbol contains the type of pointer returned by mmap()
2830 (and simultaneously the type of the first argument).
2831 It can be 'void *' or 'caddr_t'.
2833 modetype (modetype.U):
2834 This variable defines modetype to be something like mode_t,
2835 int, unsigned short, or whatever type is used to declare file
2836 modes for system calls.
2839 This variable is used internally by Configure to determine the
2840 full pathname (if any) of the more program. After Configure runs,
2841 the value is reset to a plain "more" and is not useful.
2843 multiarch (multiarch.U):
2844 This variable conditionally defines the MULTIARCH symbol
2845 which signifies the presence of multiplatform files.
2846 This is normally set by hints files.
2849 This variable is defined but not used by Configure.
2850 The value is a plain '' and is not useful.
2852 myarchname (archname.U):
2853 This variable holds the architecture name computed by Configure in
2854 a previous run. It is not intended to be perused by any user and
2855 should never be set in a hint file.
2857 mydomain (myhostname.U):
2858 This variable contains the eventual value of the MYDOMAIN symbol,
2859 which is the domain of the host the program is going to run on.
2860 The domain must be appended to myhostname to form a complete host name.
2861 The dot comes with mydomain, and need not be supplied by the program.
2863 myhostname (myhostname.U):
2864 This variable contains the eventual value of the MYHOSTNAME symbol,
2865 which is the name of the host the program is going to run on.
2866 The domain is not kept with hostname, but must be gotten from mydomain.
2867 The dot comes with mydomain, and need not be supplied by the program.
2869 myuname (Oldconfig.U):
2870 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2871 pseudo variables assignments in the output are stripped, thank you. The
2872 whole thing is then lower-cased.
2875 This variable contains the '-n' flag if that is what causes the echo
2876 command to suppress newline. Otherwise it is null. Correct usage is
2877 $echo $n "prompt for a question: $c".
2879 need_va_copy (need_va_copy.U):
2880 This symbol, if defined, indicates that the system stores
2881 the variable argument list datatype, va_list, in a format
2882 that cannot be copied by simple assignment, so that some
2883 other means must be used when copying is required.
2884 As such systems vary in their provision (or non-provision)
2885 of copying mechanisms, handy.h defines a platform-
2886 independent macro, Perl_va_copy(src, dst), to do the job.
2888 netdb_hlen_type (netdbtype.U):
2889 This variable holds the type used for the 2nd argument to
2890 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2891 This is only useful if you have gethostbyaddr(), naturally.
2893 netdb_host_type (netdbtype.U):
2894 This variable holds the type used for the 1st argument to
2895 gethostbyaddr(). Usually, this is char * or void *, possibly
2896 with or without a const prefix.
2897 This is only useful if you have gethostbyaddr(), naturally.
2899 netdb_name_type (netdbtype.U):
2900 This variable holds the type used for the argument to
2901 gethostbyname(). Usually, this is char * or const char *.
2902 This is only useful if you have gethostbyname(), naturally.
2904 netdb_net_type (netdbtype.U):
2905 This variable holds the type used for the 1st argument to
2906 getnetbyaddr(). Usually, this is int or long.
2907 This is only useful if you have getnetbyaddr(), naturally.
2910 This variable is used internally by Configure to determine the
2911 full pathname (if any) of the nm program. After Configure runs,
2912 the value is reset to a plain "nm" and is not useful.
2915 This variable holds the options that may be necessary for nm.
2917 nm_so_opt (usenm.U):
2918 This variable holds the options that may be necessary for nm
2919 to work on a shared library but that can not be used on an
2920 archive library. Currently, this is only used by Linux, where
2921 nm --dynamic is *required* to get symbols from an ELF library which
2922 has been stripped, but nm --dynamic is *fatal* on an archive library.
2923 Maybe Linux should just always set usenm=false.
2925 nonxs_ext (Extensions.U):
2926 This variable holds a list of all non-xs extensions included
2927 in the package. All of them will be built.
2930 This variable is used internally by Configure to determine the
2931 full pathname (if any) of the nroff program. After Configure runs,
2932 the value is reset to a plain "nroff" and is not useful.
2934 nveformat (perlxvf.U):
2935 This variable contains the format string used for printing
2936 a Perl NV using %e-ish floating point format.
2938 nvEUformat (perlxvf.U):
2939 This variable contains the format string used for printing
2940 a Perl NV using %E-ish floating point format.
2942 nvfformat (perlxvf.U):
2943 This variable confains the format string used for printing
2944 a Perl NV using %f-ish floating point format.
2946 nvFUformat (perlxvf.U):
2947 This variable confains the format string used for printing
2948 a Perl NV using %F-ish floating point format.
2950 nvgformat (perlxvf.U):
2951 This variable contains the format string used for printing
2952 a Perl NV using %g-ish floating point format.
2954 nvGUformat (perlxvf.U):
2955 This variable contains the format string used for printing
2956 a Perl NV using %G-ish floating point format.
2959 This variable is the size of an NV in bytes.
2962 This variable contains the C type used for Perl's NV.
2964 o_nonblock (nblock_io.U):
2965 This variable bears the symbol value to be used during open() or fcntl()
2966 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2967 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2968 but that is only supported by some devices.
2971 This is an old synonym for _o.
2973 old_pthread_create_joinable (d_pthrattrj.U):
2974 This variable defines the constant to use for creating joinable
2975 (aka undetached) pthreads. Unused if pthread.h defines
2976 PTHREAD_CREATE_JOINABLE. If used, possible values are
2977 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2979 optimize (ccflags.U):
2980 This variable contains any optimizer/debugger flag that should be used.
2981 It is up to the Makefile to use it.
2983 orderlib (orderlib.U):
2984 This variable is "true" if the components of libraries must be ordered
2985 (with `lorder $* | tsort`) before placing them in an archive. Set to
2986 "false" if ranlib or ar can generate random libraries.
2988 osname (Oldconfig.U):
2989 This variable contains the operating system name (e.g. sunos,
2990 solaris, hpux, etc.). It can be useful later on for setting
2991 defaults. Any spaces are replaced with underscores. It is set
2992 to a null string if we can't figure it out.
2994 osvers (Oldconfig.U):
2995 This variable contains the operating system version (e.g.
2996 4.1.3, 5.2, etc.). It is primarily used for helping select
2997 an appropriate hints file, but might be useful elsewhere for
2998 setting defaults. It is set to '' if we can't figure it out.
2999 We try to be flexible about how much of the version number
3000 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
3001 same for this package, hints files might just be os_4.0 or
3002 os_4.1, etc., not keeping separate files for each little release.
3004 otherlibdirs (otherlibdirs.U):
3005 This variable contains a colon-separated set of paths for the perl
3006 binary to search for additional library files or modules.
3007 These directories will be tacked to the end of @INC.
3008 Perl will automatically search below each path for version-
3009 and architecture-specific directories. See inc_version_list
3011 A value of ' ' means 'none' and is used to preserve this value
3012 for the next run through Configure.
3014 package (package.U):
3015 This variable contains the name of the package being constructed.
3016 It is primarily intended for the use of later Configure units.
3019 This variable contains the name of the preferred pager on the system.
3020 Usual values are (the full pathnames of) more, less, pg, or cat.
3023 This variable contains a command that produces the text of the
3024 /etc/passwd file. This is normally "cat /etc/passwd", but can be
3025 "ypcat passwd" when NIS is used.
3026 On some systems, such as os390, there may be no equivalent
3027 command, in which case this variable is unset.
3029 patchlevel (patchlevel.U):
3030 The patchlevel level of this package.
3031 The value of patchlevel comes from the patchlevel.h file.
3032 In a version number such as 5.6.1, this is the "6".
3033 In patchlevel.h, this is referred to as "PERL_VERSION".
3036 This is an old synonym for p_ in Head.U, the character
3037 used to separate elements in the command shell search PATH.
3040 This variable contains the full path (if any) to a previously
3041 installed perl5.005 or later suitable for running the script
3042 to determine inc_version_list.
3045 This variable is defined but not used by Configure.
3046 The value is a plain '' and is not useful.
3048 perl_patchlevel (patchlevel.U):
3049 This is the Perl patch level, a numeric change identifier,
3050 as defined by whichever source code maintenance system
3051 is used to maintain the patches; currently Perforce.
3052 It does not correlate with the Perl version numbers or
3053 the maintenance versus development dichotomy except
3054 by also being increasing.
3056 PERL_REVISION (Oldsyms.U):
3057 In a Perl version number such as 5.6.2, this is the 5.
3058 This value is manually set in patchlevel.h
3060 PERL_SUBVERSION (Oldsyms.U):
3061 In a Perl version number such as 5.6.2, this is the 2.
3062 Values greater than 50 represent potentially unstable
3063 development subversions.
3064 This value is manually set in patchlevel.h
3066 PERL_VERSION (Oldsyms.U):
3067 In a Perl version number such as 5.6.2, this is the 6.
3068 This value is manually set in patchlevel.h
3070 perladmin (perladmin.U):
3071 Electronic mail address of the perl5 administrator.
3074 The list of libraries needed by Perl only (any libraries needed
3075 by extensions only will by dropped, if using dynamic loading).
3077 perlpath (perlpath.U):
3078 This variable contains the eventual value of the PERLPATH symbol,
3079 which contains the name of the perl interpreter to be used in
3080 shell scripts and in the "eval 'exec'" idiom.
3083 This variable is used internally by Configure to determine the
3084 full pathname (if any) of the pg program. After Configure runs,
3085 the value is reset to a plain "pg" and is not useful.
3087 phostname (myhostname.U):
3088 This variable contains the eventual value of the PHOSTNAME symbol,
3089 which is a command that can be fed to popen() to get the host name.
3090 The program should probably not presume that the domain is or isn't
3093 pidtype (pidtype.U):
3094 This variable defines PIDTYPE to be something like pid_t, int,
3095 ushort, or whatever type is used to declare process ids in the kernel.
3098 Holds the private path used by Configure to find out the libraries.
3099 Its value is prepend to libpth. This variable takes care of special
3100 machines, like the mips. Usually, it should be empty.
3102 pm_apiversion (xs_apiversion.U):
3103 This variable contains the version of the oldest perl
3104 compatible with the present perl. (That is, pure perl modules
3105 written for $pm_apiversion will still work for the current
3106 version). perl.c:incpush() and lib/lib.pm will automatically
3107 search in $sitelib for older directories across major versions
3108 back to pm_apiversion. This is only useful if you have a perl
3109 library directory tree structured like the default one. The
3110 versioned site_perl library was introduced in 5.005, so that's
3111 the default setting for this variable. It's hard to imagine
3112 it changing before Perl6. It is included here for symmetry
3113 with xs_apiveprsion -- the searching algorithms will
3114 (presumably) be similar.
3115 See the INSTALL file for how this works.
3118 This variable is defined but not used by Configure.
3119 The value is a plain '' and is not useful.
3122 This variable is defined but not used by Configure.
3123 The value is a plain '' and is not useful.
3126 This variable holds the name of the directory below which the
3127 user will install the package. Usually, this is /usr/local, and
3128 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3129 man pages in /usr/local/man, etc. It is only used to set defaults
3130 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3132 prefixexp (prefix.U):
3133 This variable holds the full absolute path of the directory below
3134 which the user will install the package. Derived from prefix.
3136 privlib (privlib.U):
3137 This variable contains the eventual value of the PRIVLIB symbol,
3138 which is the name of the private library for this package. It may
3139 have a ~ on the front. It is up to the makefile to eventually create
3140 this directory while performing installation (with ~ substitution).
3142 privlibexp (privlib.U):
3143 This variable is the ~name expanded version of privlib, so that you
3144 may use it directly in Makefiles or shell scripts.
3146 prototype (prototype.U):
3147 This variable holds the eventual value of CAN_PROTOTYPE, which
3148 indicates the C compiler can handle funciton prototypes.
3150 ptrsize (ptrsize.U):
3151 This variable contains the value of the PTRSIZE symbol, which
3152 indicates to the C program how many bytes there are in a pointer.
3154 quadkind (quadtype.U):
3155 This variable, if defined, encodes the type of a quad:
3156 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3158 quadtype (quadtype.U):
3159 This variable defines Quad_t to be something like long, int,
3160 long long, int64_t, or whatever type is used for 64-bit integers.
3162 randbits (randfunc.U):
3163 Indicates how many bits are produced by the function used to
3164 generate normalized random numbers.
3166 randfunc (randfunc.U):
3167 Indicates the name of the random number function to use.
3168 Values include drand48, random, and rand. In C programs,
3169 the 'Drand01' macro is defined to generate uniformly distributed
3170 random numbers over the range [0., 1.[ (see drand01 and nrand).
3172 randseedtype (randfunc.U):
3173 Indicates the type of the argument of the seedfunc.
3175 ranlib (orderlib.U):
3176 This variable is set to the pathname of the ranlib program, if it is
3177 needed to generate random libraries. Set to ":" if ar can generate
3178 random libraries or if random libraries are not supported
3180 rd_nodata (nblock_io.U):
3181 This variable holds the return code from read() when no data is
3182 present. It should be -1, but some systems return 0 when O_NDELAY is
3183 used, which is a shame because you cannot make the difference between
3184 no data and an EOF.. Sigh!
3186 revision (patchlevel.U):
3187 The value of revision comes from the patchlevel.h file.
3188 In a version number such as 5.6.1, this is the "5".
3189 In patchlevel.h, this is referred to as "PERL_REVISION".
3192 This variable is used internally by Configure to determine the
3193 full pathname (if any) of the rm program. After Configure runs,
3194 the value is reset to a plain "rm" and is not useful.
3197 This variable is defined but not used by Configure.
3198 The value is a plain '' and is not useful.
3201 This variable contains 'true' or 'false' depending whether the
3202 nm extraction should be performed or not, according to the value
3203 of usenm and the flags on the Configure command line.
3205 sched_yield (d_pthread_y.U):
3206 This variable defines the way to yield the execution
3207 of the current thread.
3209 scriptdir (scriptdir.U):
3210 This variable holds the name of the directory in which the user wants
3211 to put publicly scripts for the package in question. It is either
3212 the same directory as for binaries, or a special one that can be
3213 mounted across different architectures, like /usr/share. Programs
3214 must be prepared to deal with ~name expansion.
3216 scriptdirexp (scriptdir.U):
3217 This variable is the same as scriptdir, but is filename expanded
3218 at configuration time, for programs not wanting to bother with it.
3221 This variable is used internally by Configure to determine the
3222 full pathname (if any) of the sed program. After Configure runs,
3223 the value is reset to a plain "sed" and is not useful.
3225 seedfunc (randfunc.U):
3226 Indicates the random number generating seed function.
3227 Values include srand48, srandom, and srand.
3229 selectminbits (selectminbits.U):
3230 This variable holds the minimum number of bits operated by select.
3231 That is, if you do select(n, ...), how many bits at least will be
3232 cleared in the masks if some activity is detected. Usually this
3233 is either n or 32*ceil(n/32), especially many little-endians do
3234 the latter. This is only useful if you have select(), naturally.
3236 selecttype (selecttype.U):
3237 This variable holds the type used for the 2nd, 3rd, and 4th
3238 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3239 is defined, and 'int *' otherwise. This is only useful if you
3240 have select(), naturally.
3243 This variable is defined but not used by Configure.
3244 The value is a plain '' and is not useful.
3247 This variable contains the full pathname of the shell used
3248 on this system to execute Bourne shell scripts. Usually, this will be
3249 /bin/sh, though it's possible that some systems will have /bin/ksh,
3250 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3252 This unit comes before Options.U, so you can't set sh with a '-D'
3253 option, though you can override this (and startsh)
3254 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3257 This variable is defined but not used by Configure.
3258 The value is a plain '' and is not useful.
3260 sharpbang (spitshell.U):
3261 This variable contains the string #! if this system supports that
3264 shmattype (d_shmat.U):
3265 This symbol contains the type of pointer returned by shmat().
3266 It can be 'void *' or 'char *'.
3268 shortsize (intsize.U):
3269 This variable contains the value of the SHORTSIZE symbol which
3270 indicates to the C program how many bytes there are in a short.
3272 shrpenv (libperl.U):
3273 If the user builds a shared libperl.so, then we need to tell the
3274 'perl' executable where it will be able to find the installed libperl.so.
3275 One way to do this on some systems is to set the environment variable
3276 LD_RUN_PATH to the directory that will be the final location of the
3277 shared libperl.so. The makefile can use this with something like
3278 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3280 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3283 See the main perl Makefile.SH for actual working usage.
3284 Alternatively, we might be able to use a command line option such
3285 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3286 $archlibexp/CORE (Linux).
3288 shsharp (spitshell.U):
3289 This variable tells further Configure units whether your sh can
3292 sig_count (sig_name.U):
3293 This variable holds a number larger than the largest valid
3294 signal number. This is usually the same as the NSIG macro.
3296 sig_name (sig_name.U):
3297 This variable holds the signal names, space separated. The leading
3298 SIG in signal name is removed. A ZERO is prepended to the
3299 list. This is currently not used.
3301 sig_name_init (sig_name.U):
3302 This variable holds the signal names, enclosed in double quotes and
3303 separated by commas, suitable for use in the SIG_NAME definition
3304 below. A "ZERO" is prepended to the list, and the list is
3305 terminated with a plain 0. The leading SIG in signal names
3306 is removed. See sig_num.
3308 sig_num (sig_name.U):
3309 This variable holds the signal numbers, space separated. A ZERO is
3310 prepended to the list (corresponding to the fake SIGZERO), and
3311 the list is terminated with a 0. Those numbers correspond to
3312 the value of the signal listed in the same place within the
3315 sig_num_init (sig_name.U):
3316 This variable holds the signal numbers, enclosed in double quotes and
3317 separated by commas, suitable for use in the SIG_NUM definition
3318 below. A "ZERO" is prepended to the list, and the list is
3319 terminated with a plain 0.
3321 sig_size (sig_name.U):
3322 This variable contains the number of elements of the sig_name
3323 and sig_num arrays, excluding the final NULL entry.
3325 signal_t (d_voidsig.U):
3326 This variable holds the type of the signal handler (void or int).
3328 sitearch (sitearch.U):
3329 This variable contains the eventual value of the SITEARCH symbol,
3330 which is the name of the private library for this package. It may
3331 have a ~ on the front. It is up to the makefile to eventually create
3332 this directory while performing installation (with ~ substitution).
3333 The standard distribution will put nothing in this directory.
3334 After perl has been installed, users may install their own local
3335 architecture-dependent modules in this directory with
3336 MakeMaker Makefile.PL
3337 or equivalent. See INSTALL for details.
3339 sitearchexp (sitearch.U):
3340 This variable is the ~name expanded version of sitearch, so that you
3341 may use it directly in Makefiles or shell scripts.
3343 sitebin (sitebin.U):
3344 This variable holds the name of the directory in which the user wants
3345 to put add-on publicly executable files for the package in question. It
3346 is most often a local directory such as /usr/local/bin. Programs using
3347 this variable must be prepared to deal with ~name substitution.
3348 The standard distribution will put nothing in this directory.
3349 After perl has been installed, users may install their own local
3350 executables in this directory with
3351 MakeMaker Makefile.PL
3352 or equivalent. See INSTALL for details.
3354 sitebinexp (sitebin.U):
3355 This is the same as the sitebin variable, but is filename expanded at
3356 configuration time, for use in your makefiles.
3358 sitelib (sitelib.U):
3359 This variable contains the eventual value of the SITELIB symbol,
3360 which is the name of the private library for this package. It may
3361 have a ~ on the front. It is up to the makefile to eventually create
3362 this directory while performing installation (with ~ substitution).
3363 The standard distribution will put nothing in this directory.
3364 After perl has been installed, users may install their own local
3365 architecture-independent modules in this directory with
3366 MakeMaker Makefile.PL
3367 or equivalent. See INSTALL for details.
3369 sitelib_stem (sitelib.U):
3370 This variable is $sitelibexp with any trailing version-specific component
3371 removed. The elements in inc_version_list (inc_version_list.U) can
3372 be tacked onto this variable to generate a list of directories to search.
3374 sitelibexp (sitelib.U):
3375 This variable is the ~name expanded version of sitelib, so that you
3376 may use it directly in Makefiles or shell scripts.
3378 siteprefix (siteprefix.U):
3379 This variable holds the full absolute path of the directory below
3380 which the user will install add-on packages.
3381 See INSTALL for usage and examples.
3383 siteprefixexp (siteprefix.U):
3384 This variable holds the full absolute path of the directory below
3385 which the user will install add-on packages. Derived from siteprefix.
3387 sizesize (sizesize.U):
3388 This variable contains the size of a sizetype in bytes.
3390 sizetype (sizetype.U):
3391 This variable defines sizetype to be something like size_t,
3392 unsigned long, or whatever type is used to declare length
3393 parameters for string functions.
3396 This variable is defined but not used by Configure.
3397 The value is a plain '' and is not useful.
3400 This variable is defined but not used by Configure.
3401 The value is a plain '' and is not useful.
3404 This variable holds the extension used to identify shared libraries
3405 (also known as shared objects) on the system. Usually set to 'so'.
3407 sockethdr (d_socket.U):
3408 This variable has any cpp '-I' flags needed for socket support.
3410 socketlib (d_socket.U):
3411 This variable has the names of any libraries needed for socket support.
3413 socksizetype (socksizetype.U):
3414 This variable holds the type used for the size argument
3415 for various socket calls like accept. Usual values include
3416 socklen_t, size_t, and int.
3419 This variable is used internally by Configure to determine the
3420 full pathname (if any) of the sort program. After Configure runs,
3421 the value is reset to a plain "sort" and is not useful.
3423 spackage (package.U):
3424 This variable contains the name of the package being constructed,
3425 with the first letter uppercased, i.e. suitable for starting
3428 spitshell (spitshell.U):
3429 This variable contains the command necessary to spit out a runnable
3430 shell on this system. It is either cat or a grep '-v' for # comments.
3432 sPRId64 (quadfio.U):
3433 This variable, if defined, contains the string used by stdio to
3434 format 64-bit decimal numbers (format 'd') for output.
3436 sPRIeldbl (longdblfio.U):
3437 This variable, if defined, contains the string used by stdio to
3438 format long doubles (format 'e') for output.
3440 sPRIEUldbl (longdblfio.U):
3441 This variable, if defined, contains the string used by stdio to
3442 format long doubles (format 'E') for output.
3443 The 'U' in the name is to separate this from sPRIeldbl so that even
3444 case-blind systems can see the difference.
3446 sPRIfldbl (longdblfio.U):
3447 This variable, if defined, contains the string used by stdio to
3448 format long doubles (format 'f') for output.
3450 sPRIFUldbl (longdblfio.U):
3451 This variable, if defined, contains the string used by stdio to
3452 format long doubles (format 'F') for output.
3453 The 'U' in the name is to separate this from sPRIfldbl so that even
3454 case-blind systems can see the difference.
3456 sPRIgldbl (longdblfio.U):
3457 This variable, if defined, contains the string used by stdio to
3458 format long doubles (format 'g') for output.
3460 sPRIGUldbl (longdblfio.U):
3461 This variable, if defined, contains the string used by stdio to
3462 format long doubles (format 'G') for output.
3463 The 'U' in the name is to separate this from sPRIgldbl so that even
3464 case-blind systems can see the difference.
3466 sPRIi64 (quadfio.U):
3467 This variable, if defined, contains the string used by stdio to
3468 format 64-bit decimal numbers (format 'i') for output.
3470 sPRIo64 (quadfio.U):
3471 This variable, if defined, contains the string used by stdio to
3472 format 64-bit octal numbers (format 'o') for output.
3474 sPRIu64 (quadfio.U):
3475 This variable, if defined, contains the string used by stdio to
3476 format 64-bit unsigned decimal numbers (format 'u') for output.
3478 sPRIx64 (quadfio.U):
3479 This variable, if defined, contains the string used by stdio to
3480 format 64-bit hexadecimal numbers (format 'x') for output.
3482 sPRIXU64 (quadfio.U):
3483 This variable, if defined, contains the string used by stdio to
3484 format 64-bit hExADECimAl numbers (format 'X') for output.
3485 The 'U' in the name is to separate this from sPRIx64 so that even
3486 case-blind systems can see the difference.
3489 This variable holds the path to the package source. It is up to
3490 the Makefile to use this variable and set VPATH accordingly to
3491 find the sources remotely.
3493 sSCNfldbl (longdblfio.U):
3494 This variable, if defined, contains the string used by stdio to
3495 format long doubles (format 'f') for input.
3497 ssizetype (ssizetype.U):
3498 This variable defines ssizetype to be something like ssize_t,
3499 long or int. It is used by functions that return a count
3500 of bytes or an error condition. It must be a signed type.
3501 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3503 startperl (startperl.U):
3504 This variable contains the string to put on the front of a perl
3505 script to make sure (hopefully) that it runs with perl and not some
3506 shell. Of course, that leading line must be followed by the classical
3508 eval 'exec perl -S $0 ${1+"$@"}'
3509 if $running_under_some_shell;
3510 to guarantee perl startup should the shell execute the script. Note
3511 that this magic incatation is not understood by csh.
3513 startsh (startsh.U):
3514 This variable contains the string to put on the front of a shell
3515 script to make sure (hopefully) that it runs with sh and not some
3518 static_ext (Extensions.U):
3519 This variable holds a list of XS extension files we want to
3520 link statically into the package. It is used by Makefile.
3522 stdchar (stdchar.U):
3523 This variable conditionally defines STDCHAR to be the type of char
3524 used in stdio.h. It has the values "unsigned char" or "char".
3526 stdio_base (d_stdstdio.U):
3527 This variable defines how, given a FILE pointer, fp, to access the
3528 _base field (or equivalent) of stdio.h's FILE structure. This will
3529 be used to define the macro FILE_base(fp).
3531 stdio_bufsiz (d_stdstdio.U):
3532 This variable defines how, given a FILE pointer, fp, to determine
3533 the number of bytes store in the I/O buffer pointer to by the
3534 _base field (or equivalent) of stdio.h's FILE structure. This will
3535 be used to define the macro FILE_bufsiz(fp).
3537 stdio_cnt (d_stdstdio.U):
3538 This variable defines how, given a FILE pointer, fp, to access the
3539 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3540 be used to define the macro FILE_cnt(fp).
3542 stdio_filbuf (d_stdstdio.U):
3543 This variable defines how, given a FILE pointer, fp, to tell
3544 stdio to refill it's internal buffers (?). This will
3545 be used to define the macro FILE_filbuf(fp).
3547 stdio_ptr (d_stdstdio.U):
3548 This variable defines how, given a FILE pointer, fp, to access the
3549 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3550 be used to define the macro FILE_ptr(fp).
3552 stdio_stream_array (stdio_streams.U):
3553 This variable tells the name of the array holding the stdio streams.
3554 Usual values include _iob, __iob, and __sF.
3556 strings (i_string.U):
3557 This variable holds the full path of the string header that will be
3558 used. Typically /usr/include/string.h or /usr/include/strings.h.
3561 This variable is defined but not used by Configure.
3562 The value is a plain '' and is not useful.
3564 subversion (patchlevel.U):
3565 The subversion level of this package.
3566 The value of subversion comes from the patchlevel.h file.
3567 In a version number such as 5.6.1, this is the "1".
3568 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3569 This is unique to perl.
3572 This variable holds the place where the manual is located on this
3573 system. It is not the place where the user wants to put his manual
3574 pages. Rather it is the place where Configure may look to find manual
3575 for unix commands (section 1 of the manual usually). See mansrc.
3578 This variable is defined but not used by Configure.
3579 The value is a plain '' and is not useful.
3582 This variable is defined but not used by Configure.
3583 The value is a plain '' and is not useful.
3586 This variable is defined but not used by Configure.
3587 The value is a plain '' and is not useful.
3590 This variable is defined but not used by Configure.
3591 The value is a plain '' and is not useful.
3594 This variable is used internally by Configure to determine the
3595 full pathname (if any) of the test program. After Configure runs,
3596 the value is reset to a plain "test" and is not useful.
3598 timeincl (i_time.U):
3599 This variable holds the full path of the included time header(s).
3601 timetype (d_time.U):
3602 This variable holds the type returned by time(). It can be long,
3603 or time_t on BSD sites (in which case <sys/types.h> should be
3604 included). Anyway, the type Time_t should be used.
3607 This variable is used internally by Configure to determine the
3608 full pathname (if any) of the touch program. After Configure runs,
3609 the value is reset to a plain "touch" and is not useful.
3612 This variable is used internally by Configure to determine the
3613 full pathname (if any) of the tr program. After Configure runs,
3614 the value is reset to a plain "tr" and is not useful.
3617 This variable contains the value to be passed to the tr(1)
3618 command to transliterate a newline. Typical values are
3619 '\012' and '\n'. This is needed for EBCDIC systems where
3620 newline is not necessarily '\012'.
3623 This variable is defined but not used by Configure.
3624 The value is a plain '' and is not useful.
3627 This variable is the size of an U16 in bytes.
3630 This variable contains the C type used for Perl's U16.
3633 This variable is the size of an U32 in bytes.
3636 This variable contains the C type used for Perl's U32.
3639 This variable is the size of an U64 in bytes.
3642 This variable contains the C type used for Perl's U64.
3645 This variable is the size of an U8 in bytes.
3648 This variable contains the C type used for Perl's U8.
3651 This variable contains the format string used for printing a Uid_t.
3653 uidsign (uidsign.U):
3654 This variable contains the signedness of a uidtype.
3655 1 for unsigned, -1 for signed.
3657 uidsize (uidsize.U):
3658 This variable contains the size of a uidtype in bytes.
3660 uidtype (uidtype.U):
3661 This variable defines Uid_t to be something like uid_t, int,
3662 ushort, or whatever type is used to declare user ids in the kernel.
3665 This variable is used internally by Configure to determine the
3666 full pathname (if any) of the uname program. After Configure runs,
3667 the value is reset to a plain "uname" and is not useful.
3670 This variable is used internally by Configure to determine the
3671 full pathname (if any) of the uniq program. After Configure runs,
3672 the value is reset to a plain "uniq" and is not useful.
3674 uquadtype (quadtype.U):
3675 This variable defines Uquad_t to be something like unsigned long,
3676 unsigned int, unsigned long long, uint64_t, or whatever type is
3677 used for 64-bit integers.
3679 use5005threads (usethreads.U):
3680 This variable conditionally defines the USE_5005THREADS symbol,
3681 and indicates that Perl should be built to use the 5.005-based
3682 threading implementation.
3684 use64bitall (use64bits.U):
3685 This variable conditionally defines the USE_64_BIT_ALL symbol,
3686 and indicates that 64-bit integer types should be used
3687 when available. The maximal possible
3688 64-bitness is employed: LP64 or ILP64, meaning that you will
3689 be able to use more than 2 gigabytes of memory. This mode is
3690 even more binary incompatible than USE_64_BIT_INT. You may not
3691 be able to run the resulting executable in a 32-bit CPU at all or
3692 you may need at least to reboot your OS to 64-bit mode.
3694 use64bitint (use64bits.U):
3695 This variable conditionally defines the USE_64_BIT_INT symbol,
3696 and indicates that 64-bit integer types should be used
3697 when available. The minimal possible 64-bitness
3698 is employed, just enough to get 64-bit integers into Perl.
3699 This may mean using for example "long longs", while your memory
3700 may still be limited to 2 gigabytes.
3703 This variable indicates if the system supports dynamic
3704 loading of some sort. See also dlsrc and dlobj.
3706 useithreads (usethreads.U):
3707 This variable conditionally defines the USE_ITHREADS symbol,
3708 and indicates that Perl should be built to use the interpreter-based
3709 threading implementation.
3711 uselargefiles (uselfs.U):
3712 This variable conditionally defines the USE_LARGE_FILES symbol,
3713 and indicates that large file interfaces should be used when
3716 uselongdouble (uselongdbl.U):
3717 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3718 and indicates that long doubles should be used when available.
3720 usemorebits (usemorebits.U):
3721 This variable conditionally defines the USE_MORE_BITS symbol,
3722 and indicates that explicit 64-bit interfaces and long doubles
3723 should be used when available.
3725 usemultiplicity (usemultiplicity.U):
3726 This variable conditionally defines the MULTIPLICITY symbol,
3727 and indicates that Perl should be built to use multiplicity.
3729 usemymalloc (mallocsrc.U):
3730 This variable contains y if the malloc that comes with this package
3731 is desired over the system's version of malloc. People often include
3732 special versions of malloc for effiency, but such versions are often
3733 less portable. See also mallocsrc and mallocobj.
3734 If this is 'y', then -lmalloc is removed from $libs.
3737 This variable contains 'true' or 'false' depending whether the
3738 nm extraction is wanted or not.
3740 useopcode (Extensions.U):
3741 This variable holds either 'true' or 'false' to indicate
3742 whether the Opcode extension should be used. The sole
3743 use for this currently is to allow an easy mechanism
3744 for users to skip the Opcode extension from the Configure
3747 useperlio (useperlio.U):
3748 This variable conditionally defines the USE_PERLIO symbol,
3749 and indicates that the PerlIO abstraction should be
3752 useposix (Extensions.U):
3753 This variable holds either 'true' or 'false' to indicate
3754 whether the POSIX extension should be used. The sole
3755 use for this currently is to allow an easy mechanism
3756 for hints files to indicate that POSIX will not compile
3757 on a particular system.
3760 This variable is set to true when the user agrees to use sfio.
3761 It is set to false when sfio is not available or when the user
3762 explicitely requests not to use sfio. It is here primarily so
3763 that command-line settings can override the auto-detection of
3764 d_sfio without running into a "WHOA THERE".
3766 useshrplib (libperl.U):
3767 This variable is set to 'yes' if the user wishes
3768 to build a shared libperl, and 'no' otherwise.
3770 usesocks (usesocks.U):
3771 This variable conditionally defines the USE_SOCKS symbol,
3772 and indicates that Perl should be built to use SOCKS.
3774 usethreads (usethreads.U):
3775 This variable conditionally defines the USE_THREADS symbol,
3776 and indicates that Perl should be built to use threads.
3778 usevendorprefix (vendorprefix.U):
3779 This variable tells whether the vendorprefix
3780 and consequently other vendor* paths are in use.
3782 usevfork (d_vfork.U):
3783 This variable is set to true when the user accepts to use vfork.
3784 It is set to false when no vfork is available or when the user
3785 explicitely requests not to use vfork.
3788 This variable holds the path of the include files, which is
3789 usually /usr/include. It is mainly used by other Configure units.
3792 This variable is defined but not used by Configure.
3793 The value is a plain '' and is not useful.
3795 uvoformat (perlxvf.U):
3796 This variable contains the format string used for printing
3797 a Perl UV as an unsigned octal integer.
3800 This variable is the size of a UV in bytes.
3803 This variable contains the C type used for Perl's UV.
3805 uvuformat (perlxvf.U):
3806 This variable contains the format string used for printing
3807 a Perl UV as an unsigned decimal integer.
3809 uvxformat (perlxvf.U):
3810 This variable contains the format string used for printing
3811 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3813 uvXUformat (perlxvf.U):
3814 This variable contains the format string used for printing
3815 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3817 vendorarch (vendorarch.U):
3818 This variable contains the value of the PERL_VENDORARCH symbol.
3819 It may have a ~ on the front.
3820 The standard distribution will put nothing in this directory.
3821 Vendors who distribute perl may wish to place their own
3822 architecture-dependent modules and extensions in this directory with
3823 MakeMaker Makefile.PL INSTALLDIRS=vendor
3824 or equivalent. See INSTALL for details.
3826 vendorarchexp (vendorarch.U):
3827 This variable is the ~name expanded version of vendorarch, so that you
3828 may use it directly in Makefiles or shell scripts.
3830 vendorbin (vendorbin.U):
3831 This variable contains the eventual value of the VENDORBIN symbol.
3832 It may have a ~ on the front.
3833 The standard distribution will put nothing in this directory.
3834 Vendors who distribute perl may wish to place additional
3835 binaries in this directory with
3836 MakeMaker Makefile.PL INSTALLDIRS=vendor
3837 or equivalent. See INSTALL for details.
3839 vendorbinexp (vendorbin.U):
3840 This variable is the ~name expanded version of vendorbin, so that you
3841 may use it directly in Makefiles or shell scripts.
3843 vendorlib (vendorlib.U):
3844 This variable contains the eventual value of the VENDORLIB symbol,
3845 which is the name of the private library for this package.
3846 The standard distribution will put nothing in this directory.
3847 Vendors who distribute perl may wish to place their own
3848 modules in this directory with
3849 MakeMaker Makefile.PL INSTALLDIRS=vendor
3850 or equivalent. See INSTALL for details.
3852 vendorlib_stem (vendorlib.U):
3853 This variable is $vendorlibexp with any trailing version-specific component
3854 removed. The elements in inc_version_list (inc_version_list.U) can
3855 be tacked onto this variable to generate a list of directories to search.
3857 vendorlibexp (vendorlib.U):
3858 This variable is the ~name expanded version of vendorlib, so that you
3859 may use it directly in Makefiles or shell scripts.
3861 vendorprefix (vendorprefix.U):
3862 This variable holds the full absolute path of the directory below
3863 which the vendor will install add-on packages.
3864 See INSTALL for usage and examples.
3866 vendorprefixexp (vendorprefix.U):
3867 This variable holds the full absolute path of the directory below
3868 which the vendor will install add-on packages. Derived from vendorprefix.
3870 version (patchlevel.U):
3871 The full version number of this package, such as 5.6.1 (or 5_6_1).
3872 This combines revision, patchlevel, and subversion to get the
3873 full version number, including any possible subversions.
3874 This is suitable for use as a directory name, and hence is
3875 filesystem dependent.
3877 versiononly (versiononly.U):
3878 If set, this symbol indicates that only the version-specific
3879 components of a perl installation should be installed.
3880 This may be useful for making a test installation of a new
3881 version without disturbing the existing installation.
3882 Setting versiononly is equivalent to setting installperl's -v option.
3883 In particular, the non-versioned scripts and programs such as
3884 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
3885 (see INSTALL for a more complete list). Nor are the man
3887 Usually, this is undef.
3890 This variable is defined but not used by Configure.
3891 The value is a plain '' and is not useful.
3893 voidflags (voidflags.U):
3894 This variable contains the eventual value of the VOIDFLAGS symbol,
3895 which indicates how much support of the void type is given by this
3896 compiler. See VOIDFLAGS for more info.
3899 This variable holds extra path (space-separated) used to find
3900 libraries on this platform, for example CPU-specific libraries
3901 (on multi-CPU platforms) may be listed here.
3903 xs_apiversion (xs_apiversion.U):
3904 This variable contains the version of the oldest perl binary
3905 compatible with the present perl. perl.c:incpush() and
3906 lib/lib.pm will automatically search in $sitearch for older
3907 directories across major versions back to xs_apiversion.
3908 This is only useful if you have a perl library directory tree
3909 structured like the default one.
3910 See INSTALL for how this works.
3911 The versioned site_perl directory was introduced in 5.005,
3912 so that is the lowest possible value.
3913 Since this can depend on compile time options (such as
3914 bincompat) it is set by Configure. Other non-default sources
3915 of potential incompatibility, such as multiplicity, threads,
3916 debugging, 64bits, sfio, etc., are not checked for currently,
3917 though in principle we could go snooping around in old
3921 This variable holds the name of the compiler compiler we
3922 want to use in the Makefile. It can be yacc, byacc, or bison -y.
3925 This variable contains any additional yacc flags desired by the
3926 user. It is up to the Makefile to use this.
3929 This variable is defined but not used by Configure.
3930 The value is a plain '' and is not useful.
3933 This variable is used internally by Configure to determine the
3934 full pathname (if any) of the zip program. After Configure runs,
3935 the value is reset to a plain "zip" and is not useful.