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
27 alignbytes (alignbytes.U):
28 This variable holds the number of bytes required to align a
29 double-- or a long double when applicable. Usual values are
30 2, 4 and 8. The default is eight, for safety.
32 ansi2knr (ansi2knr.U):
33 This variable is set if the user needs to run ansi2knr.
34 Currently, this is not supported, so we just abort.
36 aphostname (d_gethname.U):
37 This variable contains the command which can be used to compute the
38 host name. The command is fully qualified by its absolute path, to make
39 it safe when used by a process with super-user privileges.
41 api_revision (patchlevel.U):
42 The three variables, api_revision, api_version, and
43 api_subversion, specify the version of the oldest perl binary
44 compatible with the present perl. In a full version string
45 such as '5.6.1', api_revision is the '5'.
46 Prior to 5.5.640, the format was a floating point number,
48 perl.c:incpush() and lib/lib.pm will automatically search in
49 $sitelib/.. for older directories back to the limit specified
50 by these api_ variables. This is only useful if you have a
51 perl library directory tree structured like the default one.
52 See INSTALL for how this works. The versioned site_perl
53 directory was introduced in 5.005, so that is the lowest
54 possible value. The version list appropriate for the current
55 system is determined in inc_version_list.U.
56 XXX To do: Since compatibility can depend on compile time
57 options (such as bincompat, longlong, etc.) it should
58 (perhaps) be set by Configure, but currently it isn't.
59 Currently, we read a hard-wired value from patchlevel.h.
60 Perhaps what we ought to do is take the hard-wired value from
61 patchlevel.h but then modify it if the current Configure
62 options warrant. patchlevel.h then would use an #ifdef guard.
64 api_subversion (patchlevel.U):
65 The three variables, api_revision, api_version, and
66 api_subversion, specify the version of the oldest perl binary
67 compatible with the present perl. In a full version string
68 such as '5.6.1', api_subversion is the '1'. See api_revision for
71 api_version (patchlevel.U):
72 The three variables, api_revision, api_version, and
73 api_subversion, specify the version of the oldest perl binary
74 compatible with the present perl. In a full version string
75 such as '5.6.1', api_version is the '6'. See api_revision for
76 full details. As a special case, 5.5.0 is rendered in the
77 old-style as 5.005. (In the 5.005_0x maintenance series,
78 this was the only versioned directory in $sitelib.)
80 api_versionstring (patchlevel.U):
81 This variable combines api_revision, api_version, and
82 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
83 for use as a directory name. This is filesystem dependent.
86 This variable is used internally by Configure to determine the
87 full pathname (if any) of the ar program. After Configure runs,
88 the value is reset to a plain "ar" and is not useful.
91 This variable holds the name of the directory in which the user wants
92 to put architecture-dependent public library files for $package.
93 It is most often a local directory such as /usr/local/lib.
94 Programs using this variable must be prepared to deal
95 with filename expansion.
97 archlibexp (archlib.U):
98 This variable is the same as the archlib variable, but is
99 filename expanded at configuration time, for convenient use.
101 archname64 (use64bits.U):
102 This variable is used for the 64-bitness part of $archname.
104 archname (archname.U):
105 This variable is a short name to characterize the current
106 architecture. It is used mainly to construct the default archlib.
109 This variable defines any additional objects that must be linked
110 in with the program on this architecture. On unix, it is usually
111 empty. It is typically used to include emulations of unix calls
112 or other facilities. For perl on OS/2, for example, this would
116 This variable is used internally by Configure to determine the
117 full pathname (if any) of the awk program. After Configure runs,
118 the value is reset to a plain "awk" and is not useful.
121 The base revision level of this package, from the .package file.
124 This variable is defined but not used by Configure.
125 The value is a plain '' and is not useful.
128 This variable holds the name of the directory in which the user wants
129 to put publicly executable images for the package in question. It
130 is most often a local directory such as /usr/local/bin. Programs using
131 this variable must be prepared to deal with ~name substitution.
133 bincompat5005 (bincompat5005.U):
134 This variable contains y if this version of Perl should be
135 binary-compatible with Perl 5.005.
138 This is the same as the bin variable, but is filename expanded at
139 configuration time, for use in your makefiles.
142 This variable is defined but not used by Configure.
143 The value is a plain '' and is not useful.
146 This variable is used internally by Configure to determine the
147 full pathname (if any) of the byacc program. After Configure runs,
148 the value is reset to a plain "byacc" and is not useful.
150 byteorder (byteorder.U):
151 This variable holds the byte order. In the following, larger digits
152 indicate more significance. The variable byteorder is either 4321
153 on a big-endian machine, or 1234 on a little-endian, or 87654321
154 on a Cray ... or 3412 with weird order !
157 This variable contains the \c string if that is what causes the echo
158 command to suppress newline. Otherwise it is null. Correct usage is
159 $echo $n "prompt for a question: $c".
161 castflags (d_castneg.U):
162 This variable contains a flag that precise difficulties the
163 compiler has casting odd floating values to unsigned long:
165 1 = couldn't cast < 0
166 2 = couldn't cast >= 0x80000000
167 4 = couldn't cast in argument expression list
170 This variable is used internally by Configure to determine the
171 full pathname (if any) of the cat program. After Configure runs,
172 the value is reset to a plain "cat" and is not useful.
175 This variable holds the name of a command to execute a C compiler which
176 can resolve multiple global references that happen to have the same
177 name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'.
178 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
180 cccdlflags (dlsrc.U):
181 This variable contains any special flags that might need to be
182 passed with 'cc -c' to compile modules to be used to create a shared
183 library that will be used for dynamic loading. For hpux, this
184 should be +z. It is up to the makefile to use it.
187 This variable contains any special flags that might need to be
188 passed to cc to link with a shared library for dynamic loading.
189 It is up to the makefile to use it. For sunos 4.1, it should
193 This variable contains any additional C compiler flags desired by
194 the user. It is up to the Makefile to use this.
196 ccflags_uselargefiles (uselfs.U):
197 This variable contains the compiler flags needed by large file builds
198 and added to ccflags by hints files.
201 This can set either by hints files or by Configure. If using
202 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
203 Some platforms, however, make good use of this by storing the
204 flavor of the C compiler being used here. For example if using
205 the Sun WorkShop suite, ccname will be 'workshop'.
207 ccsymbols (Cppsym.U):
208 The variable contains the symbols defined by the C compiler alone.
209 The symbols defined by cpp or by cc when it calls cpp are not in
210 this list, see cppsymbols and cppccsymbols.
211 The list is a space-separated list of symbol=value tokens.
213 ccversion (Checkcc.U):
214 This can set either by hints files or by Configure. If using
215 a (non-gcc) vendor cc, this variable may contain a version for
219 Login name of the person who ran the Configure script and answered the
220 questions. This is used to tag both config.sh and config_h.SH.
222 cf_email (cf_email.U):
223 Electronic mail address of the person who ran Configure. This can be
224 used by units that require the user's e-mail, like MailList.U.
227 Holds the output of the "date" command when the configuration file was
228 produced. This is used to tag both config.sh and config_h.SH.
230 charsize (charsize.U):
231 This variable contains the value of the CHARSIZE symbol, which
232 indicates to the C program how many bytes there are in a character.
235 This variable is defined but not used by Configure.
236 The value is a plain '' and is not useful.
239 This variable is defined but not used by Configure.
240 The value is a plain '' and is not useful.
243 This variable is defined but not used by Configure.
244 The value is a plain '' and is not useful.
246 clocktype (d_times.U):
247 This variable holds the type returned by times(). It can be long,
248 or clock_t on BSD sites (in which case <sys/types.h> should be
252 This variable is used internally by Configure to determine the
253 full pathname (if any) of the comm program. After Configure runs,
254 the value is reset to a plain "comm" and is not useful.
257 This variable is defined but not used by Configure.
258 The value is a plain '' and is not useful.
260 CONFIGDOTSH (Oldsyms.U):
261 This is set to 'true' in config.sh so that a shell script
262 sourcing config.sh can tell if it has been sourced already.
264 contains (contains.U):
265 This variable holds the command to do a grep with a proper return
266 status. On most sane systems it is simply "grep". On insane systems
267 it is a grep followed by a cat followed by a test. This variable
268 is primarily for the use of other Configure units.
271 This variable is used internally by Configure to determine the
272 full pathname (if any) of the cp program. After Configure runs,
273 the value is reset to a plain "cp" and is not useful.
276 This variable is defined but not used by Configure.
277 The value is a plain '' and is not useful.
280 This variable is used internally by Configure to determine the
281 full pathname (if any) of the cpp program. After Configure runs,
282 the value is reset to a plain "cpp" and is not useful.
284 cpp_stuff (cpp_stuff.U):
285 This variable contains an identification of the catenation mechanism
286 used by the C preprocessor.
288 cppccsymbols (Cppsym.U):
289 The variable contains the symbols defined by the C compiler
290 when it calls cpp. The symbols defined by the cc alone or cpp
291 alone are not in this list, see ccsymbols and cppsymbols.
292 The list is a space-separated list of symbol=value tokens.
294 cppflags (ccflags.U):
295 This variable holds the flags that will be passed to the C pre-
296 processor. It is up to the Makefile to use it.
298 cpplast (cppstdin.U):
299 This variable has the same functionality as cppminus, only it applies
300 to cpprun and not cppstdin.
302 cppminus (cppstdin.U):
303 This variable contains the second part of the string which will invoke
304 the C preprocessor on the standard input and produce to standard
305 output. This variable will have the value "-" if cppstdin needs
306 a minus to specify standard input, otherwise the value is "".
309 This variable contains the command which will invoke a C preprocessor
310 on standard input and put the output to stdout. It is guaranteed not
311 to be a wrapper and may be a null string if no preprocessor can be
312 made directly available. This preprocessor might be different from the
313 one used by the C compiler. Don't forget to append cpplast after the
314 preprocessor options.
316 cppstdin (cppstdin.U):
317 This variable contains the command which will invoke the C
318 preprocessor on standard input and put the output to stdout.
319 It is primarily used by other Configure units that ask about
320 preprocessor symbols.
322 cppsymbols (Cppsym.U):
323 The variable contains the symbols defined by the C preprocessor
324 alone. The symbols defined by cc or by cc when it calls cpp are
325 not in this list, see ccsymbols and cppccsymbols.
326 The list is a space-separated list of symbol=value tokens.
328 crosscompile (crosscompile.U):
329 This variable conditionally defines the CROSSCOMPILE symbol
330 which signifies that the build process is be a cross-compilation.
331 This is normally set by hints files or from Configure command line.
333 cryptlib (d_crypt.U):
334 This variable holds -lcrypt or the path to a libcrypt.a archive if
335 the crypt() function is not defined in the standard C library. It is
336 up to the Makefile to use this.
339 This variable is used internally by Configure to determine the
340 full pathname (if any) of the csh program. After Configure runs,
341 the value is reset to a plain "csh" and is not useful.
343 d_access (d_access.U):
344 This variable conditionally defines HAS_ACCESS if the access() system
345 call is available to check for access permissions using real IDs.
347 d_accessx (d_accessx.U):
348 This variable conditionally defines the HAS_ACCESSX symbol, which
349 indicates to the C program that the accessx() routine is available.
352 This variable conditionally defines the HAS_ALARM symbol, which
353 indicates to the C program that the alarm() routine is available.
355 d_archlib (archlib.U):
356 This variable conditionally defines ARCHLIB to hold the pathname
357 of architecture-dependent library files for $package. If
358 $archlib is the same as $privlib, then this is set to undef.
361 This variable conditionally defines the HAS_ATOLF symbol, which
362 indicates to the C program that the atolf() routine is available.
365 This variable conditionally defines the HAS_ATOLL symbol, which
366 indicates to the C program that the atoll() routine is available.
368 d_attribut (d_attribut.U):
369 This variable conditionally defines HASATTRIBUTE, which
370 indicates the C compiler can check for function attributes,
371 such as printf formats.
374 This variable conditionally defines the HAS_BCMP symbol if
375 the bcmp() routine is available to compare strings.
378 This variable conditionally defines the HAS_BCOPY symbol if
379 the bcopy() routine is available to copy strings.
381 d_bincompat5005 (bincompat5005.U):
382 This variable conditionally defines BINCOMPAT5005 so that embed.h
383 can take special action if this version of Perl should be
384 binary-compatible with Perl 5.005. This is impossible for builds
385 that use features like threads and multiplicity it is always $undef
389 This symbol conditionally defines the symbol BSD when running on a
392 d_bsdgetpgrp (d_getpgrp.U):
393 This variable conditionally defines USE_BSD_GETPGRP if
394 getpgrp needs one arguments whereas USG one needs none.
396 d_bsdsetpgrp (d_setpgrp.U):
397 This variable conditionally defines USE_BSD_SETPGRP if
398 setpgrp needs two arguments whereas USG one needs none.
399 See also d_setpgid for a POSIX interface.
402 This variable conditionally defines the HAS_BZERO symbol if
403 the bzero() routine is available to set memory to 0.
405 d_casti32 (d_casti32.U):
406 This variable conditionally defines CASTI32, which indicates
407 whether the C compiler can cast large floats to 32-bit ints.
409 d_castneg (d_castneg.U):
410 This variable conditionally defines CASTNEG, which indicates
411 wether the C compiler can cast negative float to unsigned.
413 d_charvspr (d_vprintf.U):
414 This variable conditionally defines CHARVSPRINTF if this system
415 has vsprintf returning type (char*). The trend seems to be to
416 declare it as "int vsprintf()".
419 This variable conditionally defines the HAS_CHOWN symbol, which
420 indicates to the C program that the chown() routine is available.
422 d_chroot (d_chroot.U):
423 This variable conditionally defines the HAS_CHROOT symbol, which
424 indicates to the C program that the chroot() routine is available.
426 d_chsize (d_chsize.U):
427 This variable conditionally defines the CHSIZE symbol, which
428 indicates to the C program that the chsize() routine is available
429 to truncate files. You might need a -lx to get this routine.
431 d_closedir (d_closedir.U):
432 This variable conditionally defines HAS_CLOSEDIR if closedir() is
436 This variable conditionally defines the HASCONST symbol, which
437 indicates to the C program that this C compiler knows about the
441 This variable conditionally defines the CRYPT symbol, which
442 indicates to the C program that the crypt() routine is available
443 to encrypt passwords and the like.
446 This variable conditionally defines the CSH symbol, which
447 indicates to the C program that the C-shell exists.
449 d_cuserid (d_cuserid.U):
450 This variable conditionally defines the HAS_CUSERID symbol, which
451 indicates to the C program that the cuserid() routine is available
452 to get character login names.
454 d_dbl_dig (d_dbl_dig.U):
455 This variable conditionally defines d_dbl_dig if this system's
456 header files provide DBL_DIG, which is the number of significant
457 digits in a double precision number.
459 d_difftime (d_difftime.U):
460 This variable conditionally defines the HAS_DIFFTIME symbol, which
461 indicates to the C program that the difftime() routine is available.
463 d_dirnamlen (i_dirent.U):
464 This variable conditionally defines DIRNAMLEN, which indicates
465 to the C program that the length of directory entry names is
466 provided by a d_namelen field.
468 d_dlerror (d_dlerror.U):
469 This variable conditionally defines the HAS_DLERROR symbol, which
470 indicates to the C program that the dlerror() routine is available.
472 d_dlopen (d_dlopen.U):
473 This variable conditionally defines the HAS_DLOPEN symbol, which
474 indicates to the C program that the dlopen() routine is available.
476 d_dlsymun (d_dlsymun.U):
477 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
478 indicates that we need to prepend an underscore to the symbol
479 name before calling dlsym().
481 d_dosuid (d_dosuid.U):
482 This variable conditionally defines the symbol DOSUID, which
483 tells the C program that it should insert setuid emulation code
484 on hosts which have setuid #! scripts disabled.
486 d_drand48proto (d_drand48proto.U):
487 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
488 which indicates to the C program that the system provides
489 a prototype for the drand48() function. Otherwise, it is
490 up to the program to supply one.
493 This variable conditionally defines HAS_DUP2 if dup2() is
494 available to duplicate file descriptors.
496 d_eaccess (d_eaccess.U):
497 This variable conditionally defines the HAS_EACCESS symbol, which
498 indicates to the C program that the eaccess() routine is available.
500 d_endgrent (d_endgrent.U):
501 This variable conditionally defines the HAS_ENDGRENT symbol, which
502 indicates to the C program that the endgrent() routine is available
503 for sequential access of the group database.
505 d_endhent (d_endhent.U):
506 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
507 available to close whatever was being used for host queries.
509 d_endnent (d_endnent.U):
510 This variable conditionally defines HAS_ENDNETENT if endnetent() is
511 available to close whatever was being used for network queries.
513 d_endpent (d_endpent.U):
514 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
515 available to close whatever was being used for protocol queries.
517 d_endpwent (d_endpwent.U):
518 This variable conditionally defines the HAS_ENDPWENT symbol, which
519 indicates to the C program that the endpwent() routine is available
520 for sequential access of the passwd database.
522 d_endsent (d_endsent.U):
523 This variable conditionally defines HAS_ENDSERVENT if endservent() is
524 available to close whatever was being used for service queries.
526 d_eofnblk (nblock_io.U):
527 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
528 when reading from a non-blocking I/O source.
531 This variable conditionally defines the symbols EUNICE and VAX, which
532 alerts the C program that it must deal with ideosyncracies of VMS.
534 d_fchmod (d_fchmod.U):
535 This variable conditionally defines the HAS_FCHMOD symbol, which
536 indicates to the C program that the fchmod() routine is available
537 to change mode of opened files.
539 d_fchown (d_fchown.U):
540 This variable conditionally defines the HAS_FCHOWN symbol, which
541 indicates to the C program that the fchown() routine is available
542 to change ownership of opened files.
545 This variable conditionally defines the HAS_FCNTL symbol, and indicates
546 whether the fcntl() function exists
548 d_fd_macros (d_fd_set.U):
549 This variable contains the eventual value of the HAS_FD_MACROS symbol,
550 which indicates if your C compiler knows about the macros which
551 manipulate an fd_set.
553 d_fd_set (d_fd_set.U):
554 This variable contains the eventual value of the HAS_FD_SET symbol,
555 which indicates if your C compiler knows about the fd_set typedef.
557 d_fds_bits (d_fd_set.U):
558 This variable contains the eventual value of the HAS_FDS_BITS symbol,
559 which indicates if your fd_set typedef contains the fds_bits member.
560 If you have an fd_set typedef, but the dweebs who installed it did
561 a half-fast job and neglected to provide the macros to manipulate
562 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
564 d_fgetpos (d_fgetpos.U):
565 This variable conditionally defines HAS_FGETPOS if fgetpos() is
566 available to get the file position indicator.
568 d_flexfnam (d_flexfnam.U):
569 This variable conditionally defines the FLEXFILENAMES symbol, which
570 indicates that the system supports filenames longer than 14 characters.
573 This variable conditionally defines HAS_FLOCK if flock() is
574 available to do file locking.
577 This variable conditionally defines the HAS_FORK symbol, which
578 indicates to the C program that the fork() routine is available.
580 d_fpathconf (d_pathconf.U):
581 This variable conditionally defines the HAS_FPATHCONF symbol, which
582 indicates to the C program that the pathconf() routine is available
583 to determine file-system related limits and options associated
584 with a given open file descriptor.
586 d_fpos64_t (d_fpos64_t.U):
587 This symbol will be defined if the C compiler supports fpos64_t.
589 d_frexpl (d_frexpl.U):
590 This variable conditionally defines the HAS_FREXPL symbol, which
591 indicates to the C program that the frexpl() routine is available.
593 d_fs_data_s (d_fs_data_s.U):
594 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
595 which indicates that the struct fs_data is supported.
597 d_fseeko (d_fseeko.U):
598 This variable conditionally defines the HAS_FSEEKO symbol, which
599 indicates to the C program that the fseeko() routine is available.
601 d_fsetpos (d_fsetpos.U):
602 This variable conditionally defines HAS_FSETPOS if fsetpos() is
603 available to set the file position indicator.
605 d_fstatfs (d_fstatfs.U):
606 This variable conditionally defines the HAS_FSTATFS symbol, which
607 indicates to the C program that the fstatfs() routine is available.
609 d_fstatvfs (d_statvfs.U):
610 This variable conditionally defines the HAS_FSTATVFS symbol, which
611 indicates to the C program that the fstatvfs() routine is available.
613 d_ftello (d_ftello.U):
614 This variable conditionally defines the HAS_FTELLO symbol, which
615 indicates to the C program that the ftello() routine is available.
618 This variable conditionally defines the HAS_FTIME symbol, which indicates
619 that the ftime() routine exists. The ftime() routine is basically
620 a sub-second accuracy clock.
622 d_Gconvert (d_gconvert.U):
623 This variable holds what Gconvert is defined as to convert
624 floating point numbers into strings. It could be 'gconvert'
625 or a more complex macro emulating gconvert with gcvt() or sprintf.
627 d_Gconvert='gconvert((x),(n),(t),(b))'
628 d_Gconvert='gcvt((x),(n),(b))'
629 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
631 d_getcwd (d_getcwd.U):
632 This variable conditionally defines the HAS_GETCWD symbol, which
633 indicates to the C program that the getcwd() routine is available
634 to get the current working directory.
636 d_getespwnam (d_getespwnam.U):
637 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
638 available to retrieve enchanced (shadow) password entries by name.
640 d_getfsstat (d_getfsstat.U):
641 This variable conditionally defines the HAS_GETFSSTAT symbol, which
642 indicates to the C program that the getfsstat() routine is available.
644 d_getgrent (d_getgrent.U):
645 This variable conditionally defines the HAS_GETGRENT symbol, which
646 indicates to the C program that the getgrent() routine is available
647 for sequential access of the group database.
649 d_getgrps (d_getgrps.U):
650 This variable conditionally defines the HAS_GETGROUPS symbol, which
651 indicates to the C program that the getgroups() routine is available
652 to get the list of process groups.
654 d_gethbyaddr (d_gethbyad.U):
655 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
656 indicates to the C program that the gethostbyaddr() routine is available
657 to look up hosts by their IP addresses.
659 d_gethbyname (d_gethbynm.U):
660 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
661 indicates to the C program that the gethostbyname() routine is available
662 to look up host names in some data base or other.
664 d_gethent (d_gethent.U):
665 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
666 available to look up host names in some data base or another.
668 d_gethname (d_gethname.U):
669 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
670 indicates to the C program that the gethostname() routine may be
671 used to derive the host name.
673 d_gethostprotos (d_gethostprotos.U):
674 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
675 which indicates to the C program that <netdb.h> supplies
676 prototypes for the various gethost*() functions.
677 See also netdbtype.U for probing for various netdb types.
679 d_getlogin (d_getlogin.U):
680 This variable conditionally defines the HAS_GETLOGIN symbol, which
681 indicates to the C program that the getlogin() routine is available
682 to get the login name.
684 d_getmnt (d_getmnt.U):
685 This variable conditionally defines the HAS_GETMNT symbol, which
686 indicates to the C program that the getmnt() routine is available
687 to retrieve one or more mount info blocks by filename.
689 d_getmntent (d_getmntent.U):
690 This variable conditionally defines the HAS_GETMNTENT symbol, which
691 indicates to the C program that the getmntent() routine is available
692 to iterate through mounted files to get their mount info.
694 d_getnbyaddr (d_getnbyad.U):
695 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
696 indicates to the C program that the getnetbyaddr() routine is available
697 to look up networks by their IP addresses.
699 d_getnbyname (d_getnbynm.U):
700 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
701 indicates to the C program that the getnetbyname() routine is available
702 to look up networks by their names.
704 d_getnent (d_getnent.U):
705 This variable conditionally defines HAS_GETNETENT if getnetent() is
706 available to look up network names in some data base or another.
708 d_getnetprotos (d_getnetprotos.U):
709 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
710 which indicates to the C program that <netdb.h> supplies
711 prototypes for the various getnet*() functions.
712 See also netdbtype.U for probing for various netdb types.
714 d_getpbyname (d_getprotby.U):
715 This variable conditionally defines the HAS_GETPROTOBYNAME
716 symbol, which indicates to the C program that the
717 getprotobyname() routine is available to look up protocols
720 d_getpbynumber (d_getprotby.U):
721 This variable conditionally defines the HAS_GETPROTOBYNUMBER
722 symbol, which indicates to the C program that the
723 getprotobynumber() routine is available to look up protocols
726 d_getpent (d_getpent.U):
727 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
728 available to look up protocols in some data base or another.
730 d_getpgid (d_getpgid.U):
731 This variable conditionally defines the HAS_GETPGID symbol, which
732 indicates to the C program that the getpgid(pid) function
733 is available to get the process group id.
735 d_getpgrp2 (d_getpgrp2.U):
736 This variable conditionally defines the HAS_GETPGRP2 symbol, which
737 indicates to the C program that the getpgrp2() (as in DG/UX) routine
738 is available to get the current process group.
740 d_getpgrp (d_getpgrp.U):
741 This variable conditionally defines HAS_GETPGRP if getpgrp() is
742 available to get the current process group.
744 d_getppid (d_getppid.U):
745 This variable conditionally defines the HAS_GETPPID symbol, which
746 indicates to the C program that the getppid() routine is available
747 to get the parent process ID.
749 d_getprior (d_getprior.U):
750 This variable conditionally defines HAS_GETPRIORITY if getpriority()
751 is available to get a process's priority.
753 d_getprotoprotos (d_getprotoprotos.U):
754 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
755 which indicates to the C program that <netdb.h> supplies
756 prototypes for the various getproto*() functions.
757 See also netdbtype.U for probing for various netdb types.
759 d_getprpwnam (d_getprpwnam.U):
760 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
761 available to retrieve protected (shadow) password entries by name.
763 d_getpwent (d_getpwent.U):
764 This variable conditionally defines the HAS_GETPWENT symbol, which
765 indicates to the C program that the getpwent() routine is available
766 for sequential access of the passwd database.
768 d_getsbyname (d_getsrvby.U):
769 This variable conditionally defines the HAS_GETSERVBYNAME
770 symbol, which indicates to the C program that the
771 getservbyname() routine is available to look up services
774 d_getsbyport (d_getsrvby.U):
775 This variable conditionally defines the HAS_GETSERVBYPORT
776 symbol, which indicates to the C program that the
777 getservbyport() routine is available to look up services
780 d_getsent (d_getsent.U):
781 This variable conditionally defines HAS_GETSERVENT if getservent() is
782 available to look up network services in some data base or another.
784 d_getservprotos (d_getservprotos.U):
785 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
786 which indicates to the C program that <netdb.h> supplies
787 prototypes for the various getserv*() functions.
788 See also netdbtype.U for probing for various netdb types.
790 d_getspnam (d_getspnam.U):
791 This variable conditionally defines HAS_GETSPNAM if getspnam() is
792 available to retrieve SysV shadow password entries by name.
794 d_gettimeod (d_ftime.U):
795 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
796 indicates that the gettimeofday() system call exists (to obtain a
797 sub-second accuracy clock). You should probably include <sys/resource.h>.
799 d_gnulibc (d_gnulibc.U):
800 Defined if we're dealing with the GNU C Library.
802 d_grpasswd (i_grp.U):
803 This variable conditionally defines GRPASSWD, which indicates
804 that struct group in <grp.h> contains gr_passwd.
806 d_hasmntopt (d_hasmntopt.U):
807 This variable conditionally defines the HAS_HASMNTOPT symbol, which
808 indicates to the C program that the hasmntopt() routine is available
809 to query the mount options of file systems.
812 This variable conditionally defines HAS_HTONL if htonl() and its
813 friends are available to do network order byte swapping.
816 This variable conditionally defines the HAS_ICONV symbol, which
817 indicates to the C program that the iconv() routine is available.
819 d_index (d_strchr.U):
820 This variable conditionally defines HAS_INDEX if index() and
821 rindex() are available for string searching.
823 d_inetaton (d_inetaton.U):
824 This variable conditionally defines the HAS_INET_ATON symbol, which
825 indicates to the C program that the inet_aton() function is available
826 to parse IP address "dotted-quad" strings.
828 d_int64_t (d_int64_t.U):
829 This symbol will be defined if the C compiler supports int64_t.
831 d_isascii (d_isascii.U):
832 This variable conditionally defines the HAS_ISASCII constant,
833 which indicates to the C program that isascii() is available.
836 This variable conditionally defines the HAS_ISNAN symbol, which
837 indicates to the C program that the isnan() routine is available.
839 d_isnanl (d_isnanl.U):
840 This variable conditionally defines the HAS_ISNANL symbol, which
841 indicates to the C program that the isnanl() routine is available.
843 d_killpg (d_killpg.U):
844 This variable conditionally defines the HAS_KILLPG symbol, which
845 indicates to the C program that the killpg() routine is available
846 to kill process groups.
848 d_lchown (d_lchown.U):
849 This variable conditionally defines the HAS_LCHOWN symbol, which
850 indicates to the C program that the lchown() routine is available
851 to operate on a symbolic link (instead of following the link).
853 d_ldbl_dig (d_ldbl_dig.U):
854 This variable conditionally defines d_ldbl_dig if this system's
855 header files provide LDBL_DIG, which is the number of significant
856 digits in a long double precision number.
859 This variable conditionally defines HAS_LINK if link() is
860 available to create hard links.
862 d_locconv (d_locconv.U):
863 This variable conditionally defines HAS_LOCALECONV if localeconv() is
864 available for numeric and monetary formatting conventions.
867 This variable conditionally defines HAS_LOCKF if lockf() is
868 available to do file locking.
870 d_longdbl (d_longdbl.U):
871 This variable conditionally defines HAS_LONG_DOUBLE if
872 the long double type is supported.
874 d_longlong (d_longlong.U):
875 This variable conditionally defines HAS_LONG_LONG if
876 the long long type is supported.
878 d_lseekproto (d_lseekproto.U):
879 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
880 which indicates to the C program that the system provides
881 a prototype for the lseek() function. Otherwise, it is
882 up to the program to supply one.
885 This variable conditionally defines HAS_LSTAT if lstat() is
886 available to do file stats on symbolic links.
888 d_madvise (d_madvise.U):
889 This variable conditionally defines HAS_MADVISE if madvise() is
890 available to map a file into memory.
893 This variable conditionally defines the HAS_MBLEN symbol, which
894 indicates to the C program that the mblen() routine is available
895 to find the number of bytes in a multibye character.
897 d_mbstowcs (d_mbstowcs.U):
898 This variable conditionally defines the HAS_MBSTOWCS symbol, which
899 indicates to the C program that the mbstowcs() routine is available
900 to convert a multibyte string into a wide character string.
902 d_mbtowc (d_mbtowc.U):
903 This variable conditionally defines the HAS_MBTOWC symbol, which
904 indicates to the C program that the mbtowc() routine is available
905 to convert multibyte to a wide character.
907 d_memchr (d_memchr.U):
908 This variable conditionally defines the HAS_MEMCHR symbol, which
909 indicates to the C program that the memchr() routine is available
910 to locate characters within a C string.
912 d_memcmp (d_memcmp.U):
913 This variable conditionally defines the HAS_MEMCMP symbol, which
914 indicates to the C program that the memcmp() routine is available
915 to compare blocks of memory.
917 d_memcpy (d_memcpy.U):
918 This variable conditionally defines the HAS_MEMCPY symbol, which
919 indicates to the C program that the memcpy() routine is available
920 to copy blocks of memory.
922 d_memmove (d_memmove.U):
923 This variable conditionally defines the HAS_MEMMOVE symbol, which
924 indicates to the C program that the memmove() routine is available
925 to copy potentatially overlapping blocks of memory.
927 d_memset (d_memset.U):
928 This variable conditionally defines the HAS_MEMSET symbol, which
929 indicates to the C program that the memset() routine is available
930 to set blocks of memory.
933 This variable conditionally defines the HAS_MKDIR symbol, which
934 indicates to the C program that the mkdir() routine is available
935 to create directories..
937 d_mkdtemp (d_mkdtemp.U):
938 This variable conditionally defines the HAS_MKDTEMP symbol, which
939 indicates to the C program that the mkdtemp() routine is available
940 to exclusively create a uniquely named temporary directory.
942 d_mkfifo (d_mkfifo.U):
943 This variable conditionally defines the HAS_MKFIFO symbol, which
944 indicates to the C program that the mkfifo() routine is available.
946 d_mkstemp (d_mkstemp.U):
947 This variable conditionally defines the HAS_MKSTEMP symbol, which
948 indicates to the C program that the mkstemp() routine is available
949 to exclusively create and open a uniquely named temporary file.
951 d_mkstemps (d_mkstemps.U):
952 This variable conditionally defines the HAS_MKSTEMPS symbol, which
953 indicates to the C program that the mkstemps() routine is available
954 to exclusively create and open a uniquely named (with a suffix)
957 d_mktime (d_mktime.U):
958 This variable conditionally defines the HAS_MKTIME symbol, which
959 indicates to the C program that the mktime() routine is available.
962 This variable conditionally defines HAS_MMAP if mmap() is
963 available to map a file into memory.
966 This variable conditionally defines the HAS_MODFL symbol, which
967 indicates to the C program that the modfl() routine is available.
969 d_mprotect (d_mprotect.U):
970 This variable conditionally defines HAS_MPROTECT if mprotect() is
971 available to modify the access protection of a memory mapped file.
974 This variable conditionally defines the HAS_MSG symbol, which
975 indicates that the entire msg*(2) library is present.
977 d_msg_ctrunc (d_socket.U):
978 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
979 which indicates that the MSG_CTRUNC is available. #ifdef is
980 not enough because it may be an enum, glibc has been known to do this.
982 d_msg_dontroute (d_socket.U):
983 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
984 which indicates that the MSG_DONTROUTE is available. #ifdef is
985 not enough because it may be an enum, glibc has been known to do this.
987 d_msg_oob (d_socket.U):
988 This variable conditionally defines the HAS_MSG_OOB symbol,
989 which indicates that the MSG_OOB is available. #ifdef is
990 not enough because it may be an enum, glibc has been known to do this.
992 d_msg_peek (d_socket.U):
993 This variable conditionally defines the HAS_MSG_PEEK symbol,
994 which indicates that the MSG_PEEK is available. #ifdef is
995 not enough because it may be an enum, glibc has been known to do this.
997 d_msg_proxy (d_socket.U):
998 This variable conditionally defines the HAS_MSG_PROXY symbol,
999 which indicates that the MSG_PROXY is available. #ifdef is
1000 not enough because it may be an enum, glibc has been known to do this.
1002 d_msgctl (d_msgctl.U):
1003 This variable conditionally defines the HAS_MSGCTL symbol, which
1004 indicates to the C program that the msgctl() routine is available.
1006 d_msgget (d_msgget.U):
1007 This variable conditionally defines the HAS_MSGGET symbol, which
1008 indicates to the C program that the msgget() routine is available.
1010 d_msgrcv (d_msgrcv.U):
1011 This variable conditionally defines the HAS_MSGRCV symbol, which
1012 indicates to the C program that the msgrcv() routine is available.
1014 d_msgsnd (d_msgsnd.U):
1015 This variable conditionally defines the HAS_MSGSND symbol, which
1016 indicates to the C program that the msgsnd() routine is available.
1018 d_msync (d_msync.U):
1019 This variable conditionally defines HAS_MSYNC if msync() is
1020 available to synchronize a mapped file.
1022 d_munmap (d_munmap.U):
1023 This variable conditionally defines HAS_MUNMAP if munmap() is
1024 available to unmap a region mapped by mmap().
1026 d_mymalloc (mallocsrc.U):
1027 This variable conditionally defines MYMALLOC in case other parts
1028 of the source want to take special action if MYMALLOC is used.
1029 This may include different sorts of profiling or error detection.
1032 This variable conditionally defines the HAS_NICE symbol, which
1033 indicates to the C program that the nice() routine is available.
1035 d_nv_preserves_uv (perlxv.U):
1036 This variable indicates whether a variable of type nvtype
1037 can preserve all the bits a variable of type uvtype.
1039 d_nv_preserves_uv_bits (perlxv.U):
1040 This variable indicates how many of bits type uvtype
1041 a variable nvtype can preserve.
1043 d_off64_t (d_off64_t.U):
1044 This symbol will be defined if the C compiler supports off64_t.
1046 d_old_pthread_create_joinable (d_pthrattrj.U):
1047 This variable conditionally defines pthread_create_joinable.
1048 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1050 d_oldpthreads (usethreads.U):
1051 This variable conditionally defines the OLD_PTHREADS_API symbol,
1052 and indicates that Perl should be built to use the old
1053 draft POSIX threads API. This is only potentially meaningful if
1056 d_oldsock (d_socket.U):
1057 This variable conditionally defines the OLDSOCKET symbol, which
1058 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1060 d_open3 (d_open3.U):
1061 This variable conditionally defines the HAS_OPEN3 manifest constant,
1062 which indicates to the C program that the 3 argument version of
1063 the open(2) function is available.
1065 d_pathconf (d_pathconf.U):
1066 This variable conditionally defines the HAS_PATHCONF symbol, which
1067 indicates to the C program that the pathconf() routine is available
1068 to determine file-system related limits and options associated
1069 with a given filename.
1071 d_pause (d_pause.U):
1072 This variable conditionally defines the HAS_PAUSE symbol, which
1073 indicates to the C program that the pause() routine is available
1074 to suspend a process until a signal is received.
1076 d_perl_otherlibdirs (otherlibdirs.U):
1077 This variable conditionally defines PERL_OTHERLIBDIRS, which
1078 contains a colon-separated set of paths for the perl binary to
1079 include in @INC. See also otherlibdirs.
1081 d_phostname (d_gethname.U):
1082 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1083 contains the shell command which, when fed to popen(), may be
1084 used to derive the host name.
1087 This variable conditionally defines the HAS_PIPE symbol, which
1088 indicates to the C program that the pipe() routine is available
1089 to create an inter-process channel.
1092 This variable conditionally defines the HAS_POLL symbol, which
1093 indicates to the C program that the poll() routine is available
1094 to poll active file descriptors.
1096 d_portable (d_portable.U):
1097 This variable conditionally defines the PORTABLE symbol, which
1098 indicates to the C program that it should not assume that it is
1099 running on the machine it was compiled on.
1101 d_PRId64 (quadfio.U):
1102 This variable conditionally defines the PERL_PRId64 symbol, which
1103 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1105 d_PRIeldbl (longdblfio.U):
1106 This variable conditionally defines the PERL_PRIfldbl symbol, which
1107 indiciates that stdio has a symbol to print long doubles.
1109 d_PRIEUldbl (longdblfio.U):
1110 This variable conditionally defines the PERL_PRIfldbl symbol, which
1111 indiciates that stdio has a symbol to print long doubles.
1112 The 'U' in the name is to separate this from d_PRIeldbl so that even
1113 case-blind systems can see the difference.
1115 d_PRIfldbl (longdblfio.U):
1116 This variable conditionally defines the PERL_PRIfldbl symbol, which
1117 indiciates that stdio has a symbol to print long doubles.
1119 d_PRIFUldbl (longdblfio.U):
1120 This variable conditionally defines the PERL_PRIfldbl symbol, which
1121 indiciates that stdio has a symbol to print long doubles.
1122 The 'U' in the name is to separate this from d_PRIfldbl so that even
1123 case-blind systems can see the difference.
1125 d_PRIgldbl (longdblfio.U):
1126 This variable conditionally defines the PERL_PRIfldbl symbol, which
1127 indiciates that stdio has a symbol to print long doubles.
1129 d_PRIGUldbl (longdblfio.U):
1130 This variable conditionally defines the PERL_PRIfldbl symbol, which
1131 indiciates that stdio has a symbol to print long doubles.
1132 The 'U' in the name is to separate this from d_PRIgldbl so that even
1133 case-blind systems can see the difference.
1135 d_PRIi64 (quadfio.U):
1136 This variable conditionally defines the PERL_PRIi64 symbol, which
1137 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1139 d_PRIo64 (quadfio.U):
1140 This variable conditionally defines the PERL_PRIo64 symbol, which
1141 indiciates that stdio has a symbol to print 64-bit octal numbers.
1143 d_PRIu64 (quadfio.U):
1144 This variable conditionally defines the PERL_PRIu64 symbol, which
1145 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1148 d_PRIx64 (quadfio.U):
1149 This variable conditionally defines the PERL_PRIx64 symbol, which
1150 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1152 d_PRIXU64 (quadfio.U):
1153 This variable conditionally defines the PERL_PRIXU64 symbol, which
1154 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1155 The 'U' in the name is to separate this from d_PRIx64 so that even
1156 case-blind systems can see the difference.
1158 d_pthread_yield (d_pthread_y.U):
1159 This variable conditionally defines the HAS_PTHREAD_YIELD
1160 symbol if the pthread_yield routine is available to yield
1161 the execution of the current thread.
1164 This variable conditionally defines PWAGE, which indicates
1165 that struct passwd contains pw_age.
1167 d_pwchange (i_pwd.U):
1168 This variable conditionally defines PWCHANGE, which indicates
1169 that struct passwd contains pw_change.
1171 d_pwclass (i_pwd.U):
1172 This variable conditionally defines PWCLASS, which indicates
1173 that struct passwd contains pw_class.
1175 d_pwcomment (i_pwd.U):
1176 This variable conditionally defines PWCOMMENT, which indicates
1177 that struct passwd contains pw_comment.
1179 d_pwexpire (i_pwd.U):
1180 This variable conditionally defines PWEXPIRE, which indicates
1181 that struct passwd contains pw_expire.
1183 d_pwgecos (i_pwd.U):
1184 This variable conditionally defines PWGECOS, which indicates
1185 that struct passwd contains pw_gecos.
1187 d_pwpasswd (i_pwd.U):
1188 This variable conditionally defines PWPASSWD, which indicates
1189 that struct passwd contains pw_passwd.
1191 d_pwquota (i_pwd.U):
1192 This variable conditionally defines PWQUOTA, which indicates
1193 that struct passwd contains pw_quota.
1195 d_qgcvt (d_qgcvt.U):
1196 This variable conditionally defines the HAS_QGCVT symbol, which
1197 indicates to the C program that the qgcvt() routine is available.
1199 d_quad (quadtype.U):
1200 This variable, if defined, tells that there's a 64-bit integer type,
1203 d_readdir (d_readdir.U):
1204 This variable conditionally defines HAS_READDIR if readdir() is
1205 available to read directory entries.
1207 d_readlink (d_readlink.U):
1208 This variable conditionally defines the HAS_READLINK symbol, which
1209 indicates to the C program that the readlink() routine is available
1210 to read the value of a symbolic link.
1212 d_rename (d_rename.U):
1213 This variable conditionally defines the HAS_RENAME symbol, which
1214 indicates to the C program that the rename() routine is available
1217 d_rewinddir (d_readdir.U):
1218 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1221 d_rmdir (d_rmdir.U):
1222 This variable conditionally defines HAS_RMDIR if rmdir() is
1223 available to remove directories.
1225 d_safebcpy (d_safebcpy.U):
1226 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1227 the bcopy() routine can do overlapping copies.
1229 d_safemcpy (d_safemcpy.U):
1230 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1231 the memcpy() routine can do overlapping copies.
1233 d_sanemcmp (d_sanemcmp.U):
1234 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1235 the memcpy() routine is available and can be used to compare relative
1236 magnitudes of chars with their high bits set.
1238 d_sched_yield (d_pthread_y.U):
1239 This variable conditionally defines the HAS_SCHED_YIELD
1240 symbol if the sched_yield routine is available to yield
1241 the execution of the current thread.
1243 d_scm_rights (d_socket.U):
1244 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1245 which indicates that the SCM_RIGHTS is available. #ifdef is
1246 not enough because it may be an enum, glibc has been known to do this.
1248 d_SCNfldbl (longdblfio.U):
1249 This variable conditionally defines the PERL_PRIfldbl symbol, which
1250 indiciates that stdio has a symbol to scan long doubles.
1252 d_seekdir (d_readdir.U):
1253 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1256 d_select (d_select.U):
1257 This variable conditionally defines HAS_SELECT if select() is
1258 available to select active file descriptors. A <sys/time.h>
1259 inclusion may be necessary for the timeout field.
1262 This variable conditionally defines the HAS_SEM symbol, which
1263 indicates that the entire sem*(2) library is present.
1265 d_semctl (d_semctl.U):
1266 This variable conditionally defines the HAS_SEMCTL symbol, which
1267 indicates to the C program that the semctl() routine is available.
1269 d_semctl_semid_ds (d_union_semun.U):
1270 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1271 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1273 d_semctl_semun (d_union_semun.U):
1274 This variable conditionally defines USE_SEMCTL_SEMUN, which
1275 indicates that union semun is to be used for semctl IPC_STAT.
1277 d_semget (d_semget.U):
1278 This variable conditionally defines the HAS_SEMGET symbol, which
1279 indicates to the C program that the semget() routine is available.
1281 d_semop (d_semop.U):
1282 This variable conditionally defines the HAS_SEMOP symbol, which
1283 indicates to the C program that the semop() routine is available.
1285 d_setegid (d_setegid.U):
1286 This variable conditionally defines the HAS_SETEGID symbol, which
1287 indicates to the C program that the setegid() routine is available
1288 to change the effective gid of the current program.
1290 d_seteuid (d_seteuid.U):
1291 This variable conditionally defines the HAS_SETEUID symbol, which
1292 indicates to the C program that the seteuid() routine is available
1293 to change the effective uid of the current program.
1295 d_setgrent (d_setgrent.U):
1296 This variable conditionally defines the HAS_SETGRENT symbol, which
1297 indicates to the C program that the setgrent() routine is available
1298 for initializing sequential access to the group database.
1300 d_setgrps (d_setgrps.U):
1301 This variable conditionally defines the HAS_SETGROUPS symbol, which
1302 indicates to the C program that the setgroups() routine is available
1303 to set the list of process groups.
1305 d_sethent (d_sethent.U):
1306 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1309 d_setlinebuf (d_setlnbuf.U):
1310 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1311 indicates to the C program that the setlinebuf() routine is available
1312 to change stderr or stdout from block-buffered or unbuffered to a
1315 d_setlocale (d_setlocale.U):
1316 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1317 available to handle locale-specific ctype implementations.
1319 d_setnent (d_setnent.U):
1320 This variable conditionally defines HAS_SETNETENT if setnetent() is
1323 d_setpent (d_setpent.U):
1324 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1327 d_setpgid (d_setpgid.U):
1328 This variable conditionally defines the HAS_SETPGID symbol if the
1329 setpgid(pid, gpid) function is available to set process group ID.
1331 d_setpgrp2 (d_setpgrp2.U):
1332 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1333 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1334 is available to set the current process group.
1336 d_setpgrp (d_setpgrp.U):
1337 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1338 available to set the current process group.
1340 d_setprior (d_setprior.U):
1341 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1342 is available to set a process's priority.
1344 d_setproctitle (d_setproctitle.U):
1345 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1346 which indicates to the C program that the setproctitle() routine
1349 d_setpwent (d_setpwent.U):
1350 This variable conditionally defines the HAS_SETPWENT symbol, which
1351 indicates to the C program that the setpwent() routine is available
1352 for initializing sequential access to the passwd database.
1354 d_setregid (d_setregid.U):
1355 This variable conditionally defines HAS_SETREGID if setregid() is
1356 available to change the real and effective gid of the current
1359 d_setresgid (d_setregid.U):
1360 This variable conditionally defines HAS_SETRESGID if setresgid() is
1361 available to change the real, effective and saved gid of the current
1364 d_setresuid (d_setreuid.U):
1365 This variable conditionally defines HAS_SETREUID if setresuid() is
1366 available to change the real, effective and saved uid of the current
1369 d_setreuid (d_setreuid.U):
1370 This variable conditionally defines HAS_SETREUID if setreuid() is
1371 available to change the real and effective uid of the current
1374 d_setrgid (d_setrgid.U):
1375 This variable conditionally defines the HAS_SETRGID symbol, which
1376 indicates to the C program that the setrgid() routine is available
1377 to change the real gid of the current program.
1379 d_setruid (d_setruid.U):
1380 This variable conditionally defines the HAS_SETRUID symbol, which
1381 indicates to the C program that the setruid() routine is available
1382 to change the real uid of the current program.
1384 d_setsent (d_setsent.U):
1385 This variable conditionally defines HAS_SETSERVENT if setservent() is
1388 d_setsid (d_setsid.U):
1389 This variable conditionally defines HAS_SETSID if setsid() is
1390 available to set the process group ID.
1392 d_setvbuf (d_setvbuf.U):
1393 This variable conditionally defines the HAS_SETVBUF symbol, which
1394 indicates to the C program that the setvbuf() routine is available
1395 to change buffering on an open stdio stream.
1398 This variable conditionally defines the USE_SFIO symbol,
1399 and indicates whether sfio is available (and should be used).
1402 This variable conditionally defines the HAS_SHM symbol, which
1403 indicates that the entire shm*(2) library is present.
1405 d_shmat (d_shmat.U):
1406 This variable conditionally defines the HAS_SHMAT symbol, which
1407 indicates to the C program that the shmat() routine is available.
1409 d_shmatprototype (d_shmat.U):
1410 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1411 symbol, which indicates that sys/shm.h has a prototype for
1414 d_shmctl (d_shmctl.U):
1415 This variable conditionally defines the HAS_SHMCTL symbol, which
1416 indicates to the C program that the shmctl() routine is available.
1418 d_shmdt (d_shmdt.U):
1419 This variable conditionally defines the HAS_SHMDT symbol, which
1420 indicates to the C program that the shmdt() routine is available.
1422 d_shmget (d_shmget.U):
1423 This variable conditionally defines the HAS_SHMGET symbol, which
1424 indicates to the C program that the shmget() routine is available.
1426 d_sigaction (d_sigaction.U):
1427 This variable conditionally defines the HAS_SIGACTION symbol, which
1428 indicates that the Vr4 sigaction() routine is available.
1430 d_sigsetjmp (d_sigsetjmp.U):
1431 This variable conditionally defines the HAS_SIGSETJMP symbol,
1432 which indicates that the sigsetjmp() routine is available to
1433 call setjmp() and optionally save the process's signal mask.
1435 d_socket (d_socket.U):
1436 This variable conditionally defines HAS_SOCKET, which indicates
1437 that the BSD socket interface is supported.
1439 d_socklen_t (d_socklen_t.U):
1440 This symbol will be defined if the C compiler supports socklen_t.
1442 d_sockpair (d_socket.U):
1443 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1444 indicates that the BSD socketpair() is supported.
1446 d_socks5_init (d_socks5_init.U):
1447 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1448 indicates to the C program that the socks5_init() routine is available.
1450 d_sqrtl (d_sqrtl.U):
1451 This variable conditionally defines the HAS_SQRTL symbol, which
1452 indicates to the C program that the sqrtl() routine is available.
1454 d_statblks (d_statblks.U):
1455 This variable conditionally defines USE_STAT_BLOCKS
1456 if this system has a stat structure declaring
1457 st_blksize and st_blocks.
1459 d_statfs_f_flags (d_statfs_f_flags.U):
1460 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1461 symbol, which indicates to struct statfs from has f_flags member.
1462 This kind of struct statfs is coming from sys/mount.h (BSD),
1463 not from sys/statfs.h (SYSV).
1465 d_statfs_s (d_statfs_s.U):
1466 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1467 which indicates that the struct statfs is supported.
1469 d_statvfs (d_statvfs.U):
1470 This variable conditionally defines the HAS_STATVFS symbol, which
1471 indicates to the C program that the statvfs() routine is available.
1473 d_stdio_cnt_lval (d_stdstdio.U):
1474 This variable conditionally defines STDIO_CNT_LVALUE if the
1475 FILE_cnt macro can be used as an lvalue.
1477 d_stdio_ptr_lval (d_stdstdio.U):
1478 This variable conditionally defines STDIO_PTR_LVALUE if the
1479 FILE_ptr macro can be used as an lvalue.
1481 d_stdio_stream_array (stdio_streams.U):
1482 This variable tells whether there is an array holding
1485 d_stdiobase (d_stdstdio.U):
1486 This variable conditionally defines USE_STDIO_BASE if this system
1487 has a FILE structure declaring a usable _base field (or equivalent)
1490 d_stdstdio (d_stdstdio.U):
1491 This variable conditionally defines USE_STDIO_PTR if this system
1492 has a FILE structure declaring usable _ptr and _cnt fields (or
1493 equivalent) in stdio.h.
1495 d_strchr (d_strchr.U):
1496 This variable conditionally defines HAS_STRCHR if strchr() and
1497 strrchr() are available for string searching.
1499 d_strcoll (d_strcoll.U):
1500 This variable conditionally defines HAS_STRCOLL if strcoll() is
1501 available to compare strings using collating information.
1503 d_strctcpy (d_strctcpy.U):
1504 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1505 indicates to the C program that this C compiler knows how to copy
1508 d_strerrm (d_strerror.U):
1509 This variable holds what Strerrr is defined as to translate an error
1510 code condition into an error message string. It could be 'strerror'
1511 or a more complex macro emulating strrror with sys_errlist[], or the
1512 "unknown" string when both strerror and sys_errlist are missing.
1514 d_strerror (d_strerror.U):
1515 This variable conditionally defines HAS_STRERROR if strerror() is
1516 available to translate error numbers to strings.
1518 d_strtod (d_strtod.U):
1519 This variable conditionally defines the HAS_STRTOD symbol, which
1520 indicates to the C program that the strtod() routine is available
1521 to provide better numeric string conversion than atof().
1523 d_strtol (d_strtol.U):
1524 This variable conditionally defines the HAS_STRTOL symbol, which
1525 indicates to the C program that the strtol() routine is available
1526 to provide better numeric string conversion than atoi() and friends.
1528 d_strtold (d_strtold.U):
1529 This variable conditionally defines the HAS_STRTOLD symbol, which
1530 indicates to the C program that the strtold() routine is available.
1532 d_strtoll (d_strtoll.U):
1533 This variable conditionally defines the HAS_STRTOLL symbol, which
1534 indicates to the C program that the strtoll() routine is available.
1536 d_strtoul (d_strtoul.U):
1537 This variable conditionally defines the HAS_STRTOUL symbol, which
1538 indicates to the C program that the strtoul() routine is available
1539 to provide conversion of strings to unsigned long.
1541 d_strtoull (d_strtoull.U):
1542 This variable conditionally defines the HAS_STRTOULL symbol, which
1543 indicates to the C program that the strtoull() routine is available.
1545 d_strtouq (d_strtouq.U):
1546 This variable conditionally defines the HAS_STRTOUQ symbol, which
1547 indicates to the C program that the strtouq() routine is available.
1549 d_strxfrm (d_strxfrm.U):
1550 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1551 available to transform strings.
1553 d_suidsafe (d_dosuid.U):
1554 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1555 if setuid scripts can be secure. This test looks in /dev/fd/.
1557 d_symlink (d_symlink.U):
1558 This variable conditionally defines the HAS_SYMLINK symbol, which
1559 indicates to the C program that the symlink() routine is available
1560 to create symbolic links.
1562 d_syscall (d_syscall.U):
1563 This variable conditionally defines HAS_SYSCALL if syscall() is
1564 available call arbitrary system calls.
1566 d_sysconf (d_sysconf.U):
1567 This variable conditionally defines the HAS_SYSCONF symbol, which
1568 indicates to the C program that the sysconf() routine is available
1569 to determine system related limits and options.
1571 d_sysernlst (d_strerror.U):
1572 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1573 is available to translate error numbers to the symbolic name.
1575 d_syserrlst (d_strerror.U):
1576 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1577 available to translate error numbers to strings.
1579 d_system (d_system.U):
1580 This variable conditionally defines HAS_SYSTEM if system() is
1581 available to issue a shell command.
1583 d_tcgetpgrp (d_tcgtpgrp.U):
1584 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1585 indicates to the C program that the tcgetpgrp() routine is available.
1586 to get foreground process group ID.
1588 d_tcsetpgrp (d_tcstpgrp.U):
1589 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1590 indicates to the C program that the tcsetpgrp() routine is available
1591 to set foreground process group ID.
1593 d_telldir (d_readdir.U):
1594 This variable conditionally defines HAS_TELLDIR if telldir() is
1597 d_telldirproto (d_telldirproto.U):
1598 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1599 which indicates to the C program that the system provides
1600 a prototype for the telldir() function. Otherwise, it is
1601 up to the program to supply one.
1604 This variable conditionally defines the HAS_TIME symbol, which indicates
1605 that the time() routine exists. The time() routine is normaly
1606 provided on UNIX systems.
1608 d_times (d_times.U):
1609 This variable conditionally defines the HAS_TIMES symbol, which indicates
1610 that the times() routine exists. The times() routine is normaly
1611 provided on UNIX systems. You may have to include <sys/times.h>.
1613 d_truncate (d_truncate.U):
1614 This variable conditionally defines HAS_TRUNCATE if truncate() is
1615 available to truncate files.
1617 d_tzname (d_tzname.U):
1618 This variable conditionally defines HAS_TZNAME if tzname[] is
1619 available to access timezone names.
1621 d_umask (d_umask.U):
1622 This variable conditionally defines the HAS_UMASK symbol, which
1623 indicates to the C program that the umask() routine is available.
1624 to set and get the value of the file creation mask.
1626 d_uname (d_gethname.U):
1627 This variable conditionally defines the HAS_UNAME symbol, which
1628 indicates to the C program that the uname() routine may be
1629 used to derive the host name.
1631 d_union_semun (d_union_semun.U):
1632 This variable conditionally defines HAS_UNION_SEMUN if the
1633 union semun is defined by including <sys/sem.h>.
1635 d_ustat (d_ustat.U):
1636 This variable conditionally defines HAS_USTAT if ustat() is
1637 available to query file system statistics by dev_t.
1639 d_vendorarch (vendorarch.U):
1640 This variable conditionally defined PERL_VENDORARCH.
1642 d_vendorbin (vendorbin.U):
1643 This variable conditionally defines PERL_VENDORBIN.
1645 d_vendorlib (vendorlib.U):
1646 This variable conditionally defines PERL_VENDORLIB.
1648 d_vfork (d_vfork.U):
1649 This variable conditionally defines the HAS_VFORK symbol, which
1650 indicates the vfork() routine is available.
1652 d_void_closedir (d_closedir.U):
1653 This variable conditionally defines VOID_CLOSEDIR if closedir()
1654 does not return a value.
1656 d_voidsig (d_voidsig.U):
1657 This variable conditionally defines VOIDSIG if this system
1658 declares "void (*signal(...))()" in signal.h. The old way was to
1659 declare it as "int (*signal(...))()".
1661 d_voidtty (i_sysioctl.U):
1662 This variable conditionally defines USE_IOCNOTTY to indicate that the
1663 ioctl() call with TIOCNOTTY should be used to void tty association.
1664 Otherwise (on USG probably), it is enough to close the standard file
1665 decriptors and do a setpgrp().
1667 d_volatile (d_volatile.U):
1668 This variable conditionally defines the HASVOLATILE symbol, which
1669 indicates to the C program that this C compiler knows about the
1670 volatile declaration.
1672 d_vprintf (d_vprintf.U):
1673 This variable conditionally defines the HAS_VPRINTF symbol, which
1674 indicates to the C program that the vprintf() routine is available
1675 to printf with a pointer to an argument list.
1677 d_wait4 (d_wait4.U):
1678 This variable conditionally defines the HAS_WAIT4 symbol, which
1679 indicates the wait4() routine is available.
1681 d_waitpid (d_waitpid.U):
1682 This variable conditionally defines HAS_WAITPID if waitpid() is
1683 available to wait for child process.
1685 d_wcstombs (d_wcstombs.U):
1686 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1687 indicates to the C program that the wcstombs() routine is available
1688 to convert wide character strings to multibyte strings.
1690 d_wctomb (d_wctomb.U):
1691 This variable conditionally defines the HAS_WCTOMB symbol, which
1692 indicates to the C program that the wctomb() routine is available
1693 to convert a wide character to a multibyte.
1696 This variable conditionally defines the symbol XENIX, which alerts
1697 the C program that it runs under Xenix.
1700 This variable is used internally by Configure to determine the
1701 full pathname (if any) of the date program. After Configure runs,
1702 the value is reset to a plain "date" and is not useful.
1704 db_hashtype (i_db.U):
1705 This variable contains the type of the hash structure element
1706 in the <db.h> header file. In older versions of DB, it was
1707 int, while in newer ones it is u_int32_t.
1709 db_prefixtype (i_db.U):
1710 This variable contains the type of the prefix structure element
1711 in the <db.h> header file. In older versions of DB, it was
1712 int, while in newer ones it is size_t.
1714 defvoidused (voidflags.U):
1715 This variable contains the default value of the VOIDUSED symbol (15).
1717 direntrytype (i_dirent.U):
1718 This symbol is set to 'struct direct' or 'struct dirent' depending on
1719 whether dirent is available or not. You should use this pseudo type to
1720 portably declare your directory entries.
1723 This variable contains the extension that is to be used for the
1724 dynamically loaded modules that perl generaties.
1727 This variable contains the name of the dynamic loading file that
1728 will be used with the package.
1730 doublesize (doublesize.U):
1731 This variable contains the value of the DOUBLESIZE symbol, which
1732 indicates to the C program how many bytes there are in a double.
1734 drand01 (randfunc.U):
1735 Indicates the macro to be used to generate normalized
1736 random numbers. Uses randfunc, often divided by
1737 (double) (((unsigned long) 1 << randbits)) in order to
1738 normalize the result.
1739 In C programs, the macro 'Drand01' is mapped to drand01.
1741 dynamic_ext (Extensions.U):
1742 This variable holds a list of XS extension files we want to
1743 link dynamically into the package. It is used by Makefile.
1745 eagain (nblock_io.U):
1746 This variable bears the symbolic errno code set by read() when no
1747 data is present on the file and non-blocking I/O was enabled (otherwise,
1748 read() blocks naturally).
1751 This variable conditionally defines EBCDIC if this
1752 system uses EBCDIC encoding. Among other things, this
1753 means that the character ranges are not contiguous.
1757 This variable is used internally by Configure to determine the
1758 full pathname (if any) of the echo program. After Configure runs,
1759 the value is reset to a plain "echo" and is not useful.
1762 This variable is used internally by Configure to determine the
1763 full pathname (if any) of the egrep program. After Configure runs,
1764 the value is reset to a plain "egrep" and is not useful.
1767 This variable is defined but not used by Configure.
1768 The value is a plain '' and is not useful.
1771 When running under Eunice this variable contains a command which will
1772 convert a shell script to the proper form of text file for it to be
1773 executable by the shell. On other systems it is a no-op.
1776 This is an old synonym for _exe.
1779 This variable is used internally by Configure to determine the
1780 full pathname (if any) of the expr program. After Configure runs,
1781 the value is reset to a plain "expr" and is not useful.
1783 extensions (Extensions.U):
1784 This variable holds a list of all extension files (both XS and
1785 non-xs linked into the package. It is propagated to Config.pm
1786 and is typically used to test whether a particular extesion
1789 fflushall (fflushall.U):
1790 This symbol, if defined, tells that to flush
1791 all pending stdio output one must loop through all
1792 the stdio file handles stored in an array and fflush them.
1793 Note that if fflushNULL is defined, fflushall will not
1794 even be probed for and will be left undefined.
1796 fflushNULL (fflushall.U):
1797 This symbol, if defined, tells that fflush(NULL) does flush
1798 all pending stdio output.
1801 This variable is defined but not used by Configure.
1802 The value is a plain '' and is not useful.
1804 firstmakefile (Unix.U):
1805 This variable defines the first file searched by make. On unix,
1806 it is makefile (then Makefile). On case-insensitive systems,
1807 it might be something else. This is only used to deal with
1808 convoluted make depend tricks.
1811 This variable is defined but not used by Configure.
1812 The value is a plain '' and is not useful.
1814 fpossize (fpossize.U):
1815 This variable contains the size of a fpostype in bytes.
1817 fpostype (fpostype.U):
1818 This variable defines Fpos_t to be something like fpos_t, long,
1819 uint, or whatever type is used to declare file positions in libc.
1821 freetype (mallocsrc.U):
1822 This variable contains the return type of free(). It is usually
1823 void, but occasionally int.
1826 This variable contains the full pathname to 'ar', whether or
1827 not the user has specified 'portability'. This is only used
1831 This variable contains the full pathname to 'csh', whether or
1832 not the user has specified 'portability'. This is only used
1833 in the compiled C program, and we assume that all systems which
1834 can share this executable will have the same full pathname to
1837 full_sed (Loc_sed.U):
1838 This variable contains the full pathname to 'sed', whether or
1839 not the user has specified 'portability'. This is only used
1840 in the compiled C program, and we assume that all systems which
1841 can share this executable will have the same full pathname to
1844 gccosandvers (gccvers.U):
1845 If GNU cc (gcc) is used, this variable the operating system and
1846 version used to compile the gcc. It is set to '' if not gcc,
1847 or if nothing useful can be parsed as the os version.
1849 gccversion (gccvers.U):
1850 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1851 indicate whether the compiler is version 1 or 2. This is used in
1852 setting some of the default cflags. It is set to '' if not gcc.
1855 This variable contains the format string used for printing a Gid_t.
1857 gidsign (gidsign.U):
1858 This variable contains the signedness of a gidtype.
1859 1 for unsigned, -1 for signed.
1861 gidsize (gidsize.U):
1862 This variable contains the size of a gidtype in bytes.
1864 gidtype (gidtype.U):
1865 This variable defines Gid_t to be something like gid_t, int,
1866 ushort, or whatever type is used to declare the return type
1867 of getgid(). Typically, it is the type of group ids in the kernel.
1870 This variable holds the general path (space-separated) used to
1871 find libraries. It may contain directories that do not exist on
1872 this platform, libpth is the cleaned-up version.
1875 This variable is used internally by Configure to determine the
1876 full pathname (if any) of the grep program. After Configure runs,
1877 the value is reset to a plain "grep" and is not useful.
1880 This variable contains a command that produces the text of the
1881 /etc/group file. This is normally "cat /etc/group", but can be
1882 "ypcat group" when NIS is used.
1883 On some systems, such as os390, there may be no equivalent
1884 command, in which case this variable is unset.
1886 groupstype (groupstype.U):
1887 This variable defines Groups_t to be something like gid_t, int,
1888 ushort, or whatever type is used for the second argument to
1889 getgroups() and setgroups(). Usually, this is the same as
1890 gidtype (gid_t), but sometimes it isn't.
1893 This variable is used internally by Configure to determine the
1894 full pathname (if any) of the gzip program. After Configure runs,
1895 the value is reset to a plain "gzip" and is not useful.
1897 h_fcntl (h_fcntl.U):
1898 This is variable gets set in various places to tell i_fcntl that
1899 <fcntl.h> should be included.
1901 h_sysfile (h_sysfile.U):
1902 This is variable gets set in various places to tell i_sys_file that
1903 <sys/file.h> should be included.
1906 Gives the type of hints used for previous answers. May be one of
1907 "default", "recommended" or "previous".
1910 This variable contains a command that produces the text of the
1911 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1912 "ypcat hosts" when NIS is used.
1913 On some systems, such as os390, there may be no equivalent
1914 command, in which case this variable is unset.
1917 This variable contains a flag which will tell the C compiler and loader
1918 to produce a program running with a huge memory model. If the
1919 huge model is not supported, contains the flag to produce large
1920 model programs. It is up to the Makefile to use this.
1923 This variable is the size of an I16 in bytes.
1926 This variable contains the C type used for Perl's I16.
1929 This variable is the size of an I32 in bytes.
1932 This variable contains the C type used for Perl's I32.
1935 This variable is the size of an I64 in bytes.
1938 This variable contains the C type used for Perl's I64.
1941 This variable is the size of an I8 in bytes.
1944 This variable contains the C type used for Perl's I8.
1946 i_arpainet (i_arpainet.U):
1947 This variable conditionally defines the I_ARPA_INET symbol,
1948 and indicates whether a C program should include <arpa/inet.h>.
1950 i_bsdioctl (i_sysioctl.U):
1951 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1952 indicates to the C program that <sys/bsdioctl.h> exists and should
1956 This variable conditionally defines the I_DB symbol, and indicates
1957 whether a C program may include Berkeley's DB include file <db.h>.
1960 This variable conditionally defines the I_DBM symbol, which
1961 indicates to the C program that <dbm.h> exists and should
1964 i_dirent (i_dirent.U):
1965 This variable conditionally defines I_DIRENT, which indicates
1966 to the C program that it should include <dirent.h>.
1969 This variable conditionally defines the I_DLD symbol, which
1970 indicates to the C program that <dld.h> (GNU dynamic loading)
1971 exists and should be included.
1973 i_dlfcn (i_dlfcn.U):
1974 This variable conditionally defines the I_DLFCN symbol, which
1975 indicates to the C program that <dlfcn.h> exists and should
1978 i_fcntl (i_fcntl.U):
1979 This variable controls the value of I_FCNTL (which tells
1980 the C program to include <fcntl.h>).
1982 i_float (i_float.U):
1983 This variable conditionally defines the I_FLOAT symbol, and indicates
1984 whether a C program may include <float.h> to get symbols like DBL_MAX
1985 or DBL_MIN, i.e. machine dependent floating point values.
1988 This variable conditionally defines the I_GDBM symbol, which
1989 indicates to the C program that <gdbm.h> exists and should
1993 This variable conditionally defines the I_GRP symbol, and indicates
1994 whether a C program should include <grp.h>.
1996 i_iconv (i_iconv.U):
1997 This variable conditionally defines the I_ICONV symbol, and indicates
1998 whether a C program should include <iconv.h>.
2000 i_ieeefp (i_ieeefp.U):
2001 This variable conditionally defines the I_IEEEFP symbol, and indicates
2002 whether a C program should include <ieeefp.h>.
2004 i_inttypes (i_inttypes.U):
2005 This variable conditionally defines the I_INTTYPES symbol,
2006 and indicates whether a C program should include <inttypes.h>.
2008 i_libutil (i_libutil.U):
2009 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2010 whether a C program should include <libutil.h>.
2012 i_limits (i_limits.U):
2013 This variable conditionally defines the I_LIMITS symbol, and indicates
2014 whether a C program may include <limits.h> to get symbols like WORD_BIT
2017 i_locale (i_locale.U):
2018 This variable conditionally defines the I_LOCALE symbol,
2019 and indicates whether a C program should include <locale.h>.
2021 i_machcthr (i_machcthr.U):
2022 This variable conditionally defines the I_MACH_CTHREADS symbol,
2023 and indicates whether a C program should include <mach/cthreads.h>.
2025 i_malloc (i_malloc.U):
2026 This variable conditionally defines the I_MALLOC symbol, and indicates
2027 whether a C program should include <malloc.h>.
2030 This variable conditionally defines the I_MATH symbol, and indicates
2031 whether a C program may include <math.h>.
2033 i_memory (i_memory.U):
2034 This variable conditionally defines the I_MEMORY symbol, and indicates
2035 whether a C program should include <memory.h>.
2037 i_mntent (i_mntent.U):
2038 This variable conditionally defines the I_MNTENT symbol, and indicates
2039 whether a C program should include <mntent.h>.
2042 This variable conditionally defines the I_NDBM symbol, which
2043 indicates to the C program that <ndbm.h> exists and should
2046 i_netdb (i_netdb.U):
2047 This variable conditionally defines the I_NETDB symbol, and indicates
2048 whether a C program should include <netdb.h>.
2050 i_neterrno (i_neterrno.U):
2051 This variable conditionally defines the I_NET_ERRNO symbol, which
2052 indicates to the C program that <net/errno.h> exists and should
2055 i_netinettcp (i_netinettcp.U):
2056 This variable conditionally defines the I_NETINET_TCP symbol,
2057 and indicates whether a C program should include <netinet/tcp.h>.
2060 This variable conditionally defines I_NETINET_IN, which indicates
2061 to the C program that it should include <netinet/in.h>. Otherwise,
2062 you may try <sys/in.h>.
2065 This variable conditionally defines the I_POLL symbol, and indicates
2066 whether a C program should include <poll.h>.
2069 This variable conditionally defines the I_PROT symbol, and indicates
2070 whether a C program should include <prot.h>.
2072 i_pthread (i_pthread.U):
2073 This variable conditionally defines the I_PTHREAD symbol,
2074 and indicates whether a C program should include <pthread.h>.
2077 This variable conditionally defines I_PWD, which indicates
2078 to the C program that it should include <pwd.h>.
2080 i_rpcsvcdbm (i_dbm.U):
2081 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2082 indicates to the C program that <rpcsvc/dbm.h> exists and should
2083 be included. Some System V systems might need this instead of <dbm.h>.
2086 This variable conditionally defines the I_SFIO symbol,
2087 and indicates whether a C program should include <sfio.h>.
2089 i_sgtty (i_termio.U):
2090 This variable conditionally defines the I_SGTTY symbol, which
2091 indicates to the C program that it should include <sgtty.h> rather
2094 i_shadow (i_shadow.U):
2095 This variable conditionally defines the I_SHADOW symbol, and indicates
2096 whether a C program should include <shadow.h>.
2098 i_socks (i_socks.U):
2099 This variable conditionally defines the I_SOCKS symbol, and indicates
2100 whether a C program should include <socks.h>.
2102 i_stdarg (i_varhdr.U):
2103 This variable conditionally defines the I_STDARG symbol, which
2104 indicates to the C program that <stdarg.h> exists and should
2107 i_stddef (i_stddef.U):
2108 This variable conditionally defines the I_STDDEF symbol, which
2109 indicates to the C program that <stddef.h> exists and should
2112 i_stdlib (i_stdlib.U):
2113 This variable conditionally defines the I_STDLIB symbol, which
2114 indicates to the C program that <stdlib.h> exists and should
2117 i_string (i_string.U):
2118 This variable conditionally defines the I_STRING symbol, which
2119 indicates that <string.h> should be included rather than <strings.h>.
2121 i_sunmath (i_sunmath.U):
2122 This variable conditionally defines the I_SUNMATH symbol, and indicates
2123 whether a C program should include <sunmath.h>.
2125 i_sysaccess (i_sysaccess.U):
2126 This variable conditionally defines the I_SYS_ACCESS symbol,
2127 and indicates whether a C program should include <sys/access.h>.
2129 i_sysdir (i_sysdir.U):
2130 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2131 whether a C program should include <sys/dir.h>.
2133 i_sysfile (i_sysfile.U):
2134 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2135 whether a C program should include <sys/file.h> to get R_OK and friends.
2137 i_sysfilio (i_sysioctl.U):
2138 This variable conditionally defines the I_SYS_FILIO symbol, which
2139 indicates to the C program that <sys/filio.h> exists and should
2140 be included in preference to <sys/ioctl.h>.
2143 This variable conditionally defines I_SYS_IN, which indicates
2144 to the C program that it should include <sys/in.h> instead of
2147 i_sysioctl (i_sysioctl.U):
2148 This variable conditionally defines the I_SYS_IOCTL symbol, which
2149 indicates to the C program that <sys/ioctl.h> exists and should
2152 i_syslog (i_syslog.U):
2153 This variable conditionally defines the I_SYSLOG symbol,
2154 and indicates whether a C program should include <syslog.h>.
2156 i_sysmman (i_sysmman.U):
2157 This variable conditionally defines the I_SYS_MMAN symbol, and
2158 indicates whether a C program should include <sys/mman.h>.
2160 i_sysmode (i_sysmode.U):
2161 This variable conditionally defines the I_SYSMODE symbol,
2162 and indicates whether a C program should include <sys/mode.h>.
2164 i_sysmount (i_sysmount.U):
2165 This variable conditionally defines the I_SYSMOUNT symbol,
2166 and indicates whether a C program should include <sys/mount.h>.
2168 i_sysndir (i_sysndir.U):
2169 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2170 whether a C program should include <sys/ndir.h>.
2172 i_sysparam (i_sysparam.U):
2173 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2174 whether a C program should include <sys/param.h>.
2176 i_sysresrc (i_sysresrc.U):
2177 This variable conditionally defines the I_SYS_RESOURCE symbol,
2178 and indicates whether a C program should include <sys/resource.h>.
2180 i_syssecrt (i_syssecrt.U):
2181 This variable conditionally defines the I_SYS_SECURITY symbol,
2182 and indicates whether a C program should include <sys/security.h>.
2184 i_sysselct (i_sysselct.U):
2185 This variable conditionally defines I_SYS_SELECT, which indicates
2186 to the C program that it should include <sys/select.h> in order to
2187 get the definition of struct timeval.
2189 i_syssockio (i_sysioctl.U):
2190 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2191 C program that socket ioctl codes may be found in <sys/sockio.h>
2192 instead of <sys/ioctl.h>.
2194 i_sysstat (i_sysstat.U):
2195 This variable conditionally defines the I_SYS_STAT symbol,
2196 and indicates whether a C program should include <sys/stat.h>.
2198 i_sysstatfs (i_sysstatfs.U):
2199 This variable conditionally defines the I_SYSSTATFS symbol,
2200 and indicates whether a C program should include <sys/statfs.h>.
2202 i_sysstatvfs (i_sysstatvfs.U):
2203 This variable conditionally defines the I_SYSSTATVFS symbol,
2204 and indicates whether a C program should include <sys/statvfs.h>.
2206 i_systime (i_time.U):
2207 This variable conditionally defines I_SYS_TIME, which indicates
2208 to the C program that it should include <sys/time.h>.
2210 i_systimek (i_time.U):
2211 This variable conditionally defines I_SYS_TIME_KERNEL, which
2212 indicates to the C program that it should include <sys/time.h>
2213 with KERNEL defined.
2215 i_systimes (i_systimes.U):
2216 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2217 whether a C program should include <sys/times.h>.
2219 i_systypes (i_systypes.U):
2220 This variable conditionally defines the I_SYS_TYPES symbol,
2221 and indicates whether a C program should include <sys/types.h>.
2223 i_sysuio (i_sysuio.U):
2224 This variable conditionally defines the I_SYSUIO symbol, and indicates
2225 whether a C program should include <sys/uio.h>.
2227 i_sysun (i_sysun.U):
2228 This variable conditionally defines I_SYS_UN, which indicates
2229 to the C program that it should include <sys/un.h> to get UNIX
2230 domain socket definitions.
2232 i_sysutsname (i_sysutsname.U):
2233 This variable conditionally defines the I_SYSUTSNAME symbol,
2234 and indicates whether a C program should include <sys/utsname.h>.
2236 i_sysvfs (i_sysvfs.U):
2237 This variable conditionally defines the I_SYSVFS symbol,
2238 and indicates whether a C program should include <sys/vfs.h>.
2240 i_syswait (i_syswait.U):
2241 This variable conditionally defines I_SYS_WAIT, which indicates
2242 to the C program that it should include <sys/wait.h>.
2244 i_termio (i_termio.U):
2245 This variable conditionally defines the I_TERMIO symbol, which
2246 indicates to the C program that it should include <termio.h> rather
2249 i_termios (i_termio.U):
2250 This variable conditionally defines the I_TERMIOS symbol, which
2251 indicates to the C program that the POSIX <termios.h> file is
2255 This variable conditionally defines I_TIME, which indicates
2256 to the C program that it should include <time.h>.
2258 i_unistd (i_unistd.U):
2259 This variable conditionally defines the I_UNISTD symbol, and indicates
2260 whether a C program should include <unistd.h>.
2262 i_ustat (i_ustat.U):
2263 This variable conditionally defines the I_USTAT symbol, and indicates
2264 whether a C program should include <ustat.h>.
2266 i_utime (i_utime.U):
2267 This variable conditionally defines the I_UTIME symbol, and indicates
2268 whether a C program should include <utime.h>.
2270 i_values (i_values.U):
2271 This variable conditionally defines the I_VALUES symbol, and indicates
2272 whether a C program may include <values.h> to get symbols like MAXLONG
2275 i_varargs (i_varhdr.U):
2276 This variable conditionally defines I_VARARGS, which indicates
2277 to the C program that it should include <varargs.h>.
2279 i_varhdr (i_varhdr.U):
2280 Contains the name of the header to be included to get va_dcl definition.
2281 Typically one of varargs.h or stdarg.h.
2283 i_vfork (i_vfork.U):
2284 This variable conditionally defines the I_VFORK symbol, and indicates
2285 whether a C program should include vfork.h.
2287 ignore_versioned_solibs (libs.U):
2288 This variable should be non-empty if non-versioned shared
2289 libraries (libfoo.so.x.y) are to be ignored (because they
2290 cannot be linked against).
2292 inc_version_list (inc_version_list.U):
2293 This variable specifies the list of subdirectories in over
2294 which perl.c:incpush() and lib/lib.pm will automatically
2295 search when adding directories to @INC. The elements in
2296 the list are separated by spaces. This is only useful
2297 if you have a perl library directory tree structured like the
2298 default one. See INSTALL for how this works. The versioned
2299 site_perl directory was introduced in 5.005, so that is the
2300 lowest possible value.
2302 inc_version_list_init (inc_version_list.U):
2303 This variable holds the same list as inc_version_list, but
2304 each item is enclosed in double quotes and separated by commas,
2305 suitable for use in the PERL_INC_VERSION_LIST initialization.
2308 This variable must preceed the normal include path to get hte
2309 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2310 Value can be "" or "/bsd43" on mips.
2313 This variable is defined but not used by Configure.
2314 The value is a plain '' and is not useful.
2316 installarchlib (archlib.U):
2317 This variable is really the same as archlibexp but may differ on
2318 those systems using AFS. For extra portability, only this variable
2319 should be used in makefiles.
2322 This variable is the same as binexp unless AFS is running in which case
2323 the user is explicitely prompted for it. This variable should always
2324 be used in your makefiles for maximum portability.
2326 installman1dir (man1dir.U):
2327 This variable is really the same as man1direxp, unless you are using
2328 AFS in which case it points to the read/write location whereas
2329 man1direxp only points to the read-only access location. For extra
2330 portability, you should only use this variable within your makefiles.
2332 installman3dir (man3dir.U):
2333 This variable is really the same as man3direxp, unless you are using
2334 AFS in which case it points to the read/write location whereas
2335 man3direxp only points to the read-only access location. For extra
2336 portability, you should only use this variable within your makefiles.
2338 installprefix (installprefix.U):
2339 This variable holds the name of the directory below which
2340 "make install" will install the package. For most users, this
2341 is the same as prefix. However, it is useful for
2342 installing the software into a different (usually temporary)
2343 location after which it can be bundled up and moved somehow
2344 to the final location specified by prefix.
2346 installprefixexp (installprefix.U):
2347 This variable holds the full absolute path of installprefix
2348 with all ~-expansion done.
2350 installprivlib (privlib.U):
2351 This variable is really the same as privlibexp but may differ on
2352 those systems using AFS. For extra portability, only this variable
2353 should be used in makefiles.
2355 installscript (scriptdir.U):
2356 This variable is usually the same as scriptdirexp, unless you are on
2357 a system running AFS, in which case they may differ slightly. You
2358 should always use this variable within your makefiles for portability.
2360 installsitearch (sitearch.U):
2361 This variable is really the same as sitearchexp but may differ on
2362 those systems using AFS. For extra portability, only this variable
2363 should be used in makefiles.
2365 installsitebin (sitebin.U):
2366 This variable is usually the same as sitebinexp, unless you are on
2367 a system running AFS, in which case they may differ slightly. You
2368 should always use this variable within your makefiles for portability.
2370 installsitelib (sitelib.U):
2371 This variable is really the same as sitelibexp but may differ on
2372 those systems using AFS. For extra portability, only this variable
2373 should be used in makefiles.
2375 installstyle (installstyle.U):
2376 This variable describes the "style" of the perl installation.
2377 This is intended to be useful for tools that need to
2378 manipulate entire perl distributions. Perl itself doesn't use
2379 this to find its libraries -- the library directories are
2380 stored directly in Config.pm. Currently, there are only two
2381 styles: "lib" and "lib/perl5". The default library locations
2382 (e.g. privlib, sitelib) are either $prefix/lib or
2383 $prefix/lib/perl5. The former is useful if $prefix is a
2384 directory dedicated to perl (e.g. /opt/perl), while the latter
2385 is useful if $prefix is shared by many packages, e.g. if
2387 This may later be extended to include other information, so
2388 be careful with pattern-matching on the results.
2389 For compatibility with perl5.005 and earlier, the default
2390 setting is based on whether or not $prefix contains the string
2393 installusrbinperl (instubperl.U):
2394 This variable tells whether Perl should be installed also as
2395 /usr/bin/perl in addition to
2398 installvendorarch (vendorarch.U):
2399 This variable is really the same as vendorarchexp but may differ on
2400 those systems using AFS. For extra portability, only this variable
2401 should be used in makefiles.
2403 installvendorbin (vendorbin.U):
2404 This variable is really the same as vendorbinexp but may differ on
2405 those systems using AFS. For extra portability, only this variable
2406 should be used in makefiles.
2408 installvendorlib (vendorlib.U):
2409 This variable is really the same as vendorlibexp but may differ on
2410 those systems using AFS. For extra portability, only this variable
2411 should be used in makefiles.
2413 intsize (intsize.U):
2414 This variable contains the value of the INTSIZE symbol, which
2415 indicates to the C program how many bytes there are in an int.
2417 ivdformat (perlxvf.U):
2418 This variable contains the format string used for printing
2419 a Perl IV as a signed decimal integer.
2422 This variable is the size of an IV in bytes.
2425 This variable contains the C type used for Perl's IV.
2427 known_extensions (Extensions.U):
2428 This variable holds a list of all XS extensions included in
2432 This variable is defined but not used by Configure.
2433 The value is a plain '' and is not useful.
2436 This variable contains a flag which will tell the C compiler and loader
2437 to produce a program running with a large memory model. It is up to
2438 the Makefile to use this.
2441 This variable indicates the program to be used to link
2442 libraries for dynamic loading. On some systems, it is 'ld'.
2443 On ELF systems, it should be $cc. Mostly, we'll try to respect
2444 the hint file setting.
2446 lddlflags (dlsrc.U):
2447 This variable contains any special flags that might need to be
2448 passed to $ld to create a shared library suitable for dynamic
2449 loading. It is up to the makefile to use it. For hpux, it
2450 should be '-b'. For sunos 4.1, it is empty.
2452 ldflags (ccflags.U):
2453 This variable contains any additional C loader flags desired by
2454 the user. It is up to the Makefile to use this.
2456 ldflags_uselargefiles (uselfs.U):
2457 This variable contains the loader flags needed by large file builds
2458 and added to ldflags by hints files.
2460 ldlibpthname (libperl.U):
2461 This variable holds the name of the shared library
2462 search path, often LD_LIBRARY_PATH. To get an empty
2463 string, the hints file must set this to 'none'.
2466 This variable is used internally by Configure to determine the
2467 full pathname (if any) of the less program. After Configure runs,
2468 the value is reset to a plain "less" and is not useful.
2471 This is an old synonym for _a.
2474 This variable contains the location of the C library.
2476 libperl (libperl.U):
2477 The perl executable is obtained by linking perlmain.c with
2478 libperl, any static extensions (usually just DynaLoader),
2479 and any other libraries needed on this system. libperl
2480 is usually libperl.a, but can also be libperl.so.xxx if
2481 the user wishes to build a perl executable with a shared
2485 This variable holds the general path (space-separated) used to find
2486 libraries. It is intended to be used by other units.
2489 This variable holds the additional libraries we want to use.
2490 It is up to the Makefile to deal with it.
2493 This variable holds the directory names aka dirnames of the libraries
2494 we found and accepted, duplicates are removed.
2497 This variable holds the filenames aka basenames of the libraries
2498 we found and accepted.
2501 This variable holds the full pathnames of the libraries
2502 we found and accepted.
2505 This variable holds the directory names probed for libraries.
2507 libswanted (Myinit.U):
2508 This variable holds a list of all the libraries we want to
2509 search. The order is chosen to pick up the c library
2510 ahead of ucb or bsd libraries for SVR4.
2512 libswanted_uselargefiles (uselfs.U):
2513 This variable contains the libraries needed by large file builds
2514 and added to ldflags by hints files. It is a space separated list
2515 of the library names without the "lib" prefix or any suffix, just
2519 This variable is defined but not used by Configure.
2520 The value is a plain '' and is not useful.
2523 This variable is defined but not used by Configure.
2524 The value is a plain '' and is not useful.
2526 lkflags (ccflags.U):
2527 This variable contains any additional C partial linker flags desired by
2528 the user. It is up to the Makefile to use this.
2531 This variable is used internally by Configure to determine the
2532 full pathname (if any) of the ln program. After Configure runs,
2533 the value is reset to a plain "ln" and is not useful.
2536 This variable holds the name of the command to make
2537 symbolic links (if they are supported). It can be used
2538 in the Makefile. It is either 'ln -s' or 'ln'
2540 locincpth (ccflags.U):
2541 This variable contains a list of additional directories to be
2542 searched by the compiler. The appropriate '-I' directives will
2543 be added to ccflags. This is intended to simplify setting
2544 local directories from the Configure command line.
2545 It's not much, but it parallels the loclibpth stuff in libpth.U.
2547 loclibpth (libpth.U):
2548 This variable holds the paths (space-separated) used to find local
2549 libraries. It is prepended to libpth, and is intended to be easily
2550 set from the command line.
2552 longdblsize (d_longdbl.U):
2553 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2554 indicates to the C program how many bytes there are in a long double,
2555 if this system supports long doubles.
2557 longlongsize (d_longlong.U):
2558 This variable contains the value of the LONGLONGSIZE symbol, which
2559 indicates to the C program how many bytes there are in a long long,
2560 if this system supports long long.
2562 longsize (intsize.U):
2563 This variable contains the value of the LONGSIZE symbol, which
2564 indicates to the C program how many bytes there are in a long.
2567 This variable is defined but not used by Configure.
2568 The value is a plain '' and is not useful.
2571 This variable is defined but not used by Configure.
2572 The value is a plain '' and is not useful.
2575 This variable is used internally by Configure to determine the
2576 full pathname (if any) of the ls program. After Configure runs,
2577 the value is reset to a plain "ls" and is not useful.
2579 lseeksize (lseektype.U):
2580 This variable defines lseektype to be something like off_t, long,
2581 or whatever type is used to declare lseek offset's type in the
2582 kernel (which also appears to be lseek's return type).
2584 lseektype (lseektype.U):
2585 This variable defines lseektype to be something like off_t, long,
2586 or whatever type is used to declare lseek offset's type in the
2587 kernel (which also appears to be lseek's return type).
2590 This variable is defined but not used by Configure.
2591 The value is a plain '' and is not useful.
2594 This variable is defined but not used by Configure.
2595 The value is a plain '' and is not useful.
2598 This variable is used internally by Configure to determine the
2599 full pathname (if any) of the make program. After Configure runs,
2600 the value is reset to a plain "make" and is not useful.
2602 make_set_make (make.U):
2603 Some versions of 'make' set the variable MAKE. Others do not.
2604 This variable contains the string to be included in Makefile.SH
2605 so that MAKE is set if needed, and not if not needed.
2606 Possible values are:
2607 make_set_make='#' # If your make program handles this for you,
2608 make_set_make="MAKE=$make" # if it doesn't.
2609 I used a comment character so that we can distinguish a
2610 'set' value (from a previous config.sh or Configure '-D' option)
2611 from an uncomputed value.
2613 mallocobj (mallocsrc.U):
2614 This variable contains the name of the malloc.o that this package
2615 generates, if that malloc.o is preferred over the system malloc.
2616 Otherwise the value is null. This variable is intended for generating
2617 Makefiles. See mallocsrc.
2619 mallocsrc (mallocsrc.U):
2620 This variable contains the name of the malloc.c that comes with
2621 the package, if that malloc.c is preferred over the system malloc.
2622 Otherwise the value is null. This variable is intended for generating
2625 malloctype (mallocsrc.U):
2626 This variable contains the kind of ptr returned by malloc and realloc.
2628 man1dir (man1dir.U):
2629 This variable contains the name of the directory in which manual
2630 source pages are to be put. It is the responsibility of the
2631 Makefile.SH to get the value of this into the proper command.
2632 You must be prepared to do the ~name expansion yourself.
2634 man1direxp (man1dir.U):
2635 This variable is the same as the man1dir variable, but is filename
2636 expanded at configuration time, for convenient use in makefiles.
2638 man1ext (man1dir.U):
2639 This variable contains the extension that the manual page should
2640 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2643 man3dir (man3dir.U):
2644 This variable contains the name of the directory in which manual
2645 source pages are to be put. It is the responsibility of the
2646 Makefile.SH to get the value of this into the proper command.
2647 You must be prepared to do the ~name expansion yourself.
2649 man3direxp (man3dir.U):
2650 This variable is the same as the man3dir variable, but is filename
2651 expanded at configuration time, for convenient use in makefiles.
2653 man3ext (man3dir.U):
2654 This variable contains the extension that the manual page should
2655 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2659 This variable is used internally by Configure to determine the
2660 full pathname (if any) of the Mcc program. After Configure runs,
2661 the value is reset to a plain "Mcc" and is not useful.
2664 This variable contains a flag which will tell the C compiler and loader
2665 to produce a program running with a medium memory model. If the
2666 medium model is not supported, contains the flag to produce large
2667 model programs. It is up to the Makefile to use this.
2669 mips_type (usrinc.U):
2670 This variable holds the environment type for the mips system.
2671 Possible values are "BSD 4.3" and "System V".
2674 This variable is used internally by Configure to determine the
2675 full pathname (if any) of the mkdir program. After Configure runs,
2676 the value is reset to a plain "mkdir" and is not useful.
2678 mmaptype (d_mmap.U):
2679 This symbol contains the type of pointer returned by mmap()
2680 (and simultaneously the type of the first argument).
2681 It can be 'void *' or 'caddr_t'.
2684 This variable contains the list of memory models supported by this
2685 system. Possible component values are none, split, unsplit, small,
2686 medium, large, and huge. The component values are space separated.
2688 modetype (modetype.U):
2689 This variable defines modetype to be something like mode_t,
2690 int, unsigned short, or whatever type is used to declare file
2691 modes for system calls.
2694 This variable is used internally by Configure to determine the
2695 full pathname (if any) of the more program. After Configure runs,
2696 the value is reset to a plain "more" and is not useful.
2698 multiarch (multiarch.U):
2699 This variable conditionally defines the MULTIARCH symbol
2700 which signifies the presence of multiplatform files.
2701 This is normally set by hints files.
2704 This variable is defined but not used by Configure.
2705 The value is a plain '' and is not useful.
2707 myarchname (archname.U):
2708 This variable holds the architecture name computed by Configure in
2709 a previous run. It is not intended to be perused by any user and
2710 should never be set in a hint file.
2712 mydomain (myhostname.U):
2713 This variable contains the eventual value of the MYDOMAIN symbol,
2714 which is the domain of the host the program is going to run on.
2715 The domain must be appended to myhostname to form a complete host name.
2716 The dot comes with mydomain, and need not be supplied by the program.
2718 myhostname (myhostname.U):
2719 This variable contains the eventual value of the MYHOSTNAME symbol,
2720 which is the name of the host the program is going to run on.
2721 The domain is not kept with hostname, but must be gotten from mydomain.
2722 The dot comes with mydomain, and need not be supplied by the program.
2724 myuname (Oldconfig.U):
2725 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2726 pseudo variables assignments in the output are stripped, thank you. The
2727 whole thing is then lower-cased.
2730 This variable contains the '-n' flag if that is what causes the echo
2731 command to suppress newline. Otherwise it is null. Correct usage is
2732 $echo $n "prompt for a question: $c".
2734 netdb_hlen_type (netdbtype.U):
2735 This variable holds the type used for the 2nd argument to
2736 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2737 This is only useful if you have gethostbyaddr(), naturally.
2739 netdb_host_type (netdbtype.U):
2740 This variable holds the type used for the 1st argument to
2741 gethostbyaddr(). Usually, this is char * or void *, possibly
2742 with or without a const prefix.
2743 This is only useful if you have gethostbyaddr(), naturally.
2745 netdb_name_type (netdbtype.U):
2746 This variable holds the type used for the argument to
2747 gethostbyname(). Usually, this is char * or const char *.
2748 This is only useful if you have gethostbyname(), naturally.
2750 netdb_net_type (netdbtype.U):
2751 This variable holds the type used for the 1st argument to
2752 getnetbyaddr(). Usually, this is int or long.
2753 This is only useful if you have getnetbyaddr(), naturally.
2756 This variable is used internally by Configure to determine the
2757 full pathname (if any) of the nm program. After Configure runs,
2758 the value is reset to a plain "nm" and is not useful.
2761 This variable holds the options that may be necessary for nm.
2763 nm_so_opt (usenm.U):
2764 This variable holds the options that may be necessary for nm
2765 to work on a shared library but that can not be used on an
2766 archive library. Currently, this is only used by Linux, where
2767 nm --dynamic is *required* to get symbols from an ELF library which
2768 has been stripped, but nm --dynamic is *fatal* on an archive library.
2769 Maybe Linux should just always set usenm=false.
2771 nonxs_ext (Extensions.U):
2772 This variable holds a list of all non-xs extensions included
2773 in the package. All of them will be built.
2776 This variable is used internally by Configure to determine the
2777 full pathname (if any) of the nroff program. After Configure runs,
2778 the value is reset to a plain "nroff" and is not useful.
2780 nveformat (perlxvf.U):
2781 This variable contains the format string used for printing
2782 a Perl NV using %e-ish floating point format.
2784 nvEUformat (perlxvf.U):
2785 This variable contains the format string used for printing
2786 a Perl NV using %E-ish floating point format.
2788 nvfformat (perlxvf.U):
2789 This variable confains the format string used for printing
2790 a Perl NV using %f-ish floating point format.
2792 nvFUformat (perlxvf.U):
2793 This variable confains the format string used for printing
2794 a Perl NV using %F-ish floating point format.
2796 nvgformat (perlxvf.U):
2797 This variable contains the format string used for printing
2798 a Perl NV using %g-ish floating point format.
2800 nvGUformat (perlxvf.U):
2801 This variable contains the format string used for printing
2802 a Perl NV using %G-ish floating point format.
2805 This variable is the size of an NV in bytes.
2808 This variable contains the C type used for Perl's NV.
2810 o_nonblock (nblock_io.U):
2811 This variable bears the symbol value to be used during open() or fcntl()
2812 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2813 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2814 but that is only supported by some devices.
2817 This is an old synonym for _o.
2819 old_pthread_create_joinable (d_pthrattrj.U):
2820 This variable defines the constant to use for creating joinable
2821 (aka undetached) pthreads. Unused if pthread.h defines
2822 PTHREAD_CREATE_JOINABLE. If used, possible values are
2823 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2825 optimize (ccflags.U):
2826 This variable contains any optimizer/debugger flag that should be used.
2827 It is up to the Makefile to use it.
2829 orderlib (orderlib.U):
2830 This variable is "true" if the components of libraries must be ordered
2831 (with `lorder $* | tsort`) before placing them in an archive. Set to
2832 "false" if ranlib or ar can generate random libraries.
2834 osname (Oldconfig.U):
2835 This variable contains the operating system name (e.g. sunos,
2836 solaris, hpux, etc.). It can be useful later on for setting
2837 defaults. Any spaces are replaced with underscores. It is set
2838 to a null string if we can't figure it out.
2840 osvers (Oldconfig.U):
2841 This variable contains the operating system version (e.g.
2842 4.1.3, 5.2, etc.). It is primarily used for helping select
2843 an appropriate hints file, but might be useful elsewhere for
2844 setting defaults. It is set to '' if we can't figure it out.
2845 We try to be flexible about how much of the version number
2846 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2847 same for this package, hints files might just be os_4.0 or
2848 os_4.1, etc., not keeping separate files for each little release.
2850 otherlibdirs (otherlibdirs.U):
2851 This variable contains a colon-separated set of paths for the perl
2852 binary to search for additional library files or modules.
2853 These directories will be tacked to the end of @INC.
2854 Perl will automatically search below each path for version-
2855 and architecture-specific directories. See inc_version_list
2857 A value of ' ' means 'none' and is used to preserve this value
2858 for the next run through Configure.
2860 package (package.U):
2861 This variable contains the name of the package being constructed.
2862 It is primarily intended for the use of later Configure units.
2865 This variable contains the name of the preferred pager on the system.
2866 Usual values are (the full pathnames of) more, less, pg, or cat.
2869 This variable contains a command that produces the text of the
2870 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2871 "ypcat passwd" when NIS is used.
2872 On some systems, such as os390, there may be no equivalent
2873 command, in which case this variable is unset.
2875 patchlevel (patchlevel.U):
2876 The patchlevel level of this package.
2877 The value of patchlevel comes from the patchlevel.h file.
2878 In a version number such as 5.6.1, this is the "6".
2879 In patchlevel.h, this is referred to as "PERL_VERSION".
2882 This is an old synonym for p_ in Head.U, the character
2883 used to separate elements in the command shell search PATH.
2886 This variable contains the full path (if any) to a previously
2887 installed perl5.005 or later suitable for running the script
2888 to determine inc_version_list.
2891 This variable is defined but not used by Configure.
2892 The value is a plain '' and is not useful.
2894 PERL_REVISION (Oldsyms.U):
2895 In a Perl version number such as 5.6.2, this is the 5.
2896 This value is manually set in patchlevel.h
2898 PERL_SUBVERSION (Oldsyms.U):
2899 In a Perl version number such as 5.6.2, this is the 2.
2900 Values greater than 50 represent potentially unstable
2901 development subversions.
2902 This value is manually set in patchlevel.h
2904 PERL_VERSION (Oldsyms.U):
2905 In a Perl version number such as 5.6.2, this is the 6.
2906 This value is manually set in patchlevel.h
2908 perladmin (perladmin.U):
2909 Electronic mail address of the perl5 administrator.
2911 perlpath (perlpath.U):
2912 This variable contains the eventual value of the PERLPATH symbol,
2913 which contains the name of the perl interpreter to be used in
2914 shell scripts and in the "eval 'exec'" idiom.
2917 This variable is used internally by Configure to determine the
2918 full pathname (if any) of the pg program. After Configure runs,
2919 the value is reset to a plain "pg" and is not useful.
2921 phostname (myhostname.U):
2922 This variable contains the eventual value of the PHOSTNAME symbol,
2923 which is a command that can be fed to popen() to get the host name.
2924 The program should probably not presume that the domain is or isn't
2927 pidtype (pidtype.U):
2928 This variable defines PIDTYPE to be something like pid_t, int,
2929 ushort, or whatever type is used to declare process ids in the kernel.
2932 Holds the private path used by Configure to find out the libraries.
2933 Its value is prepend to libpth. This variable takes care of special
2934 machines, like the mips. Usually, it should be empty.
2936 pm_apiversion (xs_apiversion.U):
2937 This variable contains the version of the oldest perl
2938 compatible with the present perl. (That is, pure perl modules
2939 written for $pm_apiversion will still work for the current
2940 version). perl.c:incpush() and lib/lib.pm will automatically
2941 search in $sitelib for older directories across major versions
2942 back to pm_apiversion. This is only useful if you have a perl
2943 library directory tree structured like the default one. The
2944 versioned site_perl library was introduced in 5.005, so that's
2945 the default setting for this variable. It's hard to imagine
2946 it changing before Perl6. It is included here for symmetry
2947 with xs_apiveprsion -- the searching algorithms will
2948 (presumably) be similar.
2949 See the INSTALL file for how this works.
2952 This variable is defined but not used by Configure.
2953 The value is a plain '' and is not useful.
2956 This variable is defined but not used by Configure.
2957 The value is a plain '' and is not useful.
2960 This variable holds the name of the directory below which the
2961 user will install the package. Usually, this is /usr/local, and
2962 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2963 man pages in /usr/local/man, etc. It is only used to set defaults
2964 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2966 prefixexp (prefix.U):
2967 This variable holds the full absolute path of the directory below
2968 which the user will install the package. Derived from prefix.
2970 privlib (privlib.U):
2971 This variable contains the eventual value of the PRIVLIB symbol,
2972 which is the name of the private library for this package. It may
2973 have a ~ on the front. It is up to the makefile to eventually create
2974 this directory while performing installation (with ~ substitution).
2976 privlibexp (privlib.U):
2977 This variable is the ~name expanded version of privlib, so that you
2978 may use it directly in Makefiles or shell scripts.
2980 prototype (prototype.U):
2981 This variable holds the eventual value of CAN_PROTOTYPE, which
2982 indicates the C compiler can handle funciton prototypes.
2984 ptrsize (ptrsize.U):
2985 This variable contains the value of the PTRSIZE symbol, which
2986 indicates to the C program how many bytes there are in a pointer.
2988 quadkind (quadtype.U):
2989 This variable, if defined, encodes the type of a quad:
2990 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2992 quadtype (quadtype.U):
2993 This variable defines Quad_t to be something like long, int,
2994 long long, int64_t, or whatever type is used for 64-bit integers.
2996 randbits (randfunc.U):
2997 Indicates how many bits are produced by the function used to
2998 generate normalized random numbers.
3000 randfunc (randfunc.U):
3001 Indicates the name of the random number function to use.
3002 Values include drand48, random, and rand. In C programs,
3003 the 'Drand01' macro is defined to generate uniformly distributed
3004 random numbers over the range [0., 1.[ (see drand01 and nrand).
3006 randseedtype (randfunc.U):
3007 Indicates the type of the argument of the seedfunc.
3009 ranlib (orderlib.U):
3010 This variable is set to the pathname of the ranlib program, if it is
3011 needed to generate random libraries. Set to ":" if ar can generate
3012 random libraries or if random libraries are not supported
3014 rd_nodata (nblock_io.U):
3015 This variable holds the return code from read() when no data is
3016 present. It should be -1, but some systems return 0 when O_NDELAY is
3017 used, which is a shame because you cannot make the difference between
3018 no data and an EOF.. Sigh!
3020 revision (patchlevel.U):
3021 The value of revision comes from the patchlevel.h file.
3022 In a version number such as 5.6.1, this is the "5".
3023 In patchlevel.h, this is referred to as "PERL_REVISION".
3026 This variable is used internally by Configure to determine the
3027 full pathname (if any) of the rm program. After Configure runs,
3028 the value is reset to a plain "rm" and is not useful.
3031 This variable is defined but not used by Configure.
3032 The value is a plain '' and is not useful.
3035 This variable contains 'true' or 'false' depending whether the
3036 nm extraction should be performed or not, according to the value
3037 of usenm and the flags on the Configure command line.
3039 sched_yield (d_pthread_y.U):
3040 This variable defines the way to yield the execution
3041 of the current thread.
3043 scriptdir (scriptdir.U):
3044 This variable holds the name of the directory in which the user wants
3045 to put publicly scripts for the package in question. It is either
3046 the same directory as for binaries, or a special one that can be
3047 mounted across different architectures, like /usr/share. Programs
3048 must be prepared to deal with ~name expansion.
3050 scriptdirexp (scriptdir.U):
3051 This variable is the same as scriptdir, but is filename expanded
3052 at configuration time, for programs not wanting to bother with it.
3055 This variable is used internally by Configure to determine the
3056 full pathname (if any) of the sed program. After Configure runs,
3057 the value is reset to a plain "sed" and is not useful.
3059 seedfunc (randfunc.U):
3060 Indicates the random number generating seed function.
3061 Values include srand48, srandom, and srand.
3063 selectminbits (selectminbits.U):
3064 This variable holds the minimum number of bits operated by select.
3065 That is, if you do select(n, ...), how many bits at least will be
3066 cleared in the masks if some activity is detected. Usually this
3067 is either n or 32*ceil(n/32), especially many little-endians do
3068 the latter. This is only useful if you have select(), naturally.
3070 selecttype (selecttype.U):
3071 This variable holds the type used for the 2nd, 3rd, and 4th
3072 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3073 is defined, and 'int *' otherwise. This is only useful if you
3074 have select(), naturally.
3077 This variable is defined but not used by Configure.
3078 The value is a plain '' and is not useful.
3081 This variable contains the full pathname of the shell used
3082 on this system to execute Bourne shell scripts. Usually, this will be
3083 /bin/sh, though it's possible that some systems will have /bin/ksh,
3084 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3086 This unit comes before Options.U, so you can't set sh with a '-D'
3087 option, though you can override this (and startsh)
3088 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3091 This variable is defined but not used by Configure.
3092 The value is a plain '' and is not useful.
3094 sharpbang (spitshell.U):
3095 This variable contains the string #! if this system supports that
3098 shmattype (d_shmat.U):
3099 This symbol contains the type of pointer returned by shmat().
3100 It can be 'void *' or 'char *'.
3102 shortsize (intsize.U):
3103 This variable contains the value of the SHORTSIZE symbol which
3104 indicates to the C program how many bytes there are in a short.
3106 shrpenv (libperl.U):
3107 If the user builds a shared libperl.so, then we need to tell the
3108 'perl' executable where it will be able to find the installed libperl.so.
3109 One way to do this on some systems is to set the environment variable
3110 LD_RUN_PATH to the directory that will be the final location of the
3111 shared libperl.so. The makefile can use this with something like
3112 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3114 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3117 See the main perl Makefile.SH for actual working usage.
3118 Alternatively, we might be able to use a command line option such
3119 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3120 $archlibexp/CORE (Linux).
3122 shsharp (spitshell.U):
3123 This variable tells further Configure units whether your sh can
3126 sig_count (sig_name.U):
3127 This variable holds a number larger than the largest valid
3128 signal number. This is usually the same as the NSIG macro.
3130 sig_name (sig_name.U):
3131 This variable holds the signal names, space separated. The leading
3132 SIG in signal name is removed. A ZERO is prepended to the
3133 list. This is currently not used.
3135 sig_name_init (sig_name.U):
3136 This variable holds the signal names, enclosed in double quotes and
3137 separated by commas, suitable for use in the SIG_NAME definition
3138 below. A "ZERO" is prepended to the list, and the list is
3139 terminated with a plain 0. The leading SIG in signal names
3140 is removed. See sig_num.
3142 sig_num (sig_name.U):
3143 This variable holds the signal numbers, space separated. A ZERO is
3144 prepended to the list (corresponding to the fake SIGZERO), and
3145 the list is terminated with a 0. Those numbers correspond to
3146 the value of the signal listed in the same place within the
3149 sig_num_init (sig_name.U):
3150 This variable holds the signal numbers, enclosed in double quotes and
3151 separated by commas, suitable for use in the SIG_NUM definition
3152 below. A "ZERO" is prepended to the list, and the list is
3153 terminated with a plain 0.
3155 signal_t (d_voidsig.U):
3156 This variable holds the type of the signal handler (void or int).
3158 sitearch (sitearch.U):
3159 This variable contains the eventual value of the SITEARCH symbol,
3160 which is the name of the private library for this package. It may
3161 have a ~ on the front. It is up to the makefile to eventually create
3162 this directory while performing installation (with ~ substitution).
3163 The standard distribution will put nothing in this directory.
3164 After perl has been installed, users may install their own local
3165 architecture-dependent modules in this directory with
3166 MakeMaker Makefile.PL
3167 or equivalent. See INSTALL for details.
3169 sitearchexp (sitearch.U):
3170 This variable is the ~name expanded version of sitearch, so that you
3171 may use it directly in Makefiles or shell scripts.
3173 sitebin (sitebin.U):
3174 This variable holds the name of the directory in which the user wants
3175 to put add-on publicly executable files for the package in question. It
3176 is most often a local directory such as /usr/local/bin. Programs using
3177 this variable must be prepared to deal with ~name substitution.
3178 The standard distribution will put nothing in this directory.
3179 After perl has been installed, users may install their own local
3180 executables in this directory with
3181 MakeMaker Makefile.PL
3182 or equivalent. See INSTALL for details.
3184 sitebinexp (sitebin.U):
3185 This is the same as the sitebin variable, but is filename expanded at
3186 configuration time, for use in your makefiles.
3188 sitelib (sitelib.U):
3189 This variable contains the eventual value of the SITELIB symbol,
3190 which is the name of the private library for this package. It may
3191 have a ~ on the front. It is up to the makefile to eventually create
3192 this directory while performing installation (with ~ substitution).
3193 The standard distribution will put nothing in this directory.
3194 After perl has been installed, users may install their own local
3195 architecture-independent modules in this directory with
3196 MakeMaker Makefile.PL
3197 or equivalent. See INSTALL for details.
3199 sitelib_stem (sitelib.U):
3200 This variable is $sitelibexp with any trailing version-specific component
3201 removed. The elements in inc_version_list (inc_version_list.U) can
3202 be tacked onto this variable to generate a list of directories to search.
3204 sitelibexp (sitelib.U):
3205 This variable is the ~name expanded version of sitelib, so that you
3206 may use it directly in Makefiles or shell scripts.
3208 siteprefix (siteprefix.U):
3209 This variable holds the full absolute path of the directory below
3210 which the user will install add-on packages.
3211 See INSTALL for usage and examples.
3213 siteprefixexp (siteprefix.U):
3214 This variable holds the full absolute path of the directory below
3215 which the user will install add-on packages. Derived from siteprefix.
3217 sizesize (sizesize.U):
3218 This variable contains the size of a sizetype in bytes.
3220 sizetype (sizetype.U):
3221 This variable defines sizetype to be something like size_t,
3222 unsigned long, or whatever type is used to declare length
3223 parameters for string functions.
3226 This variable is defined but not used by Configure.
3227 The value is a plain '' and is not useful.
3230 This variable is defined but not used by Configure.
3231 The value is a plain '' and is not useful.
3234 This variable contains a flag which will tell the C compiler and loader
3235 to produce a program running with a small memory model. It is up to
3236 the Makefile to use this.
3239 This variable holds the extension used to identify shared libraries
3240 (also known as shared objects) on the system. Usually set to 'so'.
3242 sockethdr (d_socket.U):
3243 This variable has any cpp '-I' flags needed for socket support.
3245 socketlib (d_socket.U):
3246 This variable has the names of any libraries needed for socket support.
3248 socksizetype (socksizetype.U):
3249 This variable holds the type used for the size argument
3250 for various socket calls like accept. Usual values include
3251 socklen_t, size_t, and int.
3254 This variable is used internally by Configure to determine the
3255 full pathname (if any) of the sort program. After Configure runs,
3256 the value is reset to a plain "sort" and is not useful.
3258 spackage (package.U):
3259 This variable contains the name of the package being constructed,
3260 with the first letter uppercased, i.e. suitable for starting
3263 spitshell (spitshell.U):
3264 This variable contains the command necessary to spit out a runnable
3265 shell on this system. It is either cat or a grep '-v' for # comments.
3268 This variable contains a flag which will tell the C compiler and loader
3269 to produce a program that will run in separate I and D space, for those
3270 machines that support separation of instruction and data space. It is
3271 up to the Makefile to use this.
3273 sPRId64 (quadfio.U):
3274 This variable, if defined, contains the string used by stdio to
3275 format 64-bit decimal numbers (format 'd') for output.
3277 sPRIeldbl (longdblfio.U):
3278 This variable, if defined, contains the string used by stdio to
3279 format long doubles (format 'e') for output.
3281 sPRIEUldbl (longdblfio.U):
3282 This variable, if defined, contains the string used by stdio to
3283 format long doubles (format 'E') for output.
3284 The 'U' in the name is to separate this from sPRIeldbl so that even
3285 case-blind systems can see the difference.
3287 sPRIfldbl (longdblfio.U):
3288 This variable, if defined, contains the string used by stdio to
3289 format long doubles (format 'f') for output.
3291 sPRIFUldbl (longdblfio.U):
3292 This variable, if defined, contains the string used by stdio to
3293 format long doubles (format 'F') for output.
3294 The 'U' in the name is to separate this from sPRIfldbl so that even
3295 case-blind systems can see the difference.
3297 sPRIgldbl (longdblfio.U):
3298 This variable, if defined, contains the string used by stdio to
3299 format long doubles (format 'g') for output.
3301 sPRIGUldbl (longdblfio.U):
3302 This variable, if defined, contains the string used by stdio to
3303 format long doubles (format 'G') for output.
3304 The 'U' in the name is to separate this from sPRIgldbl so that even
3305 case-blind systems can see the difference.
3307 sPRIi64 (quadfio.U):
3308 This variable, if defined, contains the string used by stdio to
3309 format 64-bit decimal numbers (format 'i') for output.
3311 sPRIo64 (quadfio.U):
3312 This variable, if defined, contains the string used by stdio to
3313 format 64-bit octal numbers (format 'o') for output.
3315 sPRIu64 (quadfio.U):
3316 This variable, if defined, contains the string used by stdio to
3317 format 64-bit unsigned decimal numbers (format 'u') for output.
3319 sPRIx64 (quadfio.U):
3320 This variable, if defined, contains the string used by stdio to
3321 format 64-bit hexadecimal numbers (format 'x') for output.
3323 sPRIXU64 (quadfio.U):
3324 This variable, if defined, contains the string used by stdio to
3325 format 64-bit hExADECimAl numbers (format 'X') for output.
3326 The 'U' in the name is to separate this from sPRIx64 so that even
3327 case-blind systems can see the difference.
3330 This variable holds the path to the package source. It is up to
3331 the Makefile to use this variable and set VPATH accordingly to
3332 find the sources remotely.
3334 sSCNfldbl (longdblfio.U):
3335 This variable, if defined, contains the string used by stdio to
3336 format long doubles (format 'f') for input.
3338 ssizetype (ssizetype.U):
3339 This variable defines ssizetype to be something like ssize_t,
3340 long or int. It is used by functions that return a count
3341 of bytes or an error condition. It must be a signed type.
3342 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3344 startperl (startperl.U):
3345 This variable contains the string to put on the front of a perl
3346 script to make sure (hopefully) that it runs with perl and not some
3347 shell. Of course, that leading line must be followed by the classical
3349 eval 'exec perl -S $0 ${1+"$@"}'
3350 if $running_under_some_shell;
3351 to guarantee perl startup should the shell execute the script. Note
3352 that this magic incatation is not understood by csh.
3354 startsh (startsh.U):
3355 This variable contains the string to put on the front of a shell
3356 script to make sure (hopefully) that it runs with sh and not some
3359 static_ext (Extensions.U):
3360 This variable holds a list of XS extension files we want to
3361 link statically into the package. It is used by Makefile.
3363 stdchar (stdchar.U):
3364 This variable conditionally defines STDCHAR to be the type of char
3365 used in stdio.h. It has the values "unsigned char" or "char".
3367 stdio_base (d_stdstdio.U):
3368 This variable defines how, given a FILE pointer, fp, to access the
3369 _base field (or equivalent) of stdio.h's FILE structure. This will
3370 be used to define the macro FILE_base(fp).
3372 stdio_bufsiz (d_stdstdio.U):
3373 This variable defines how, given a FILE pointer, fp, to determine
3374 the number of bytes store in the I/O buffer pointer to by the
3375 _base field (or equivalent) of stdio.h's FILE structure. This will
3376 be used to define the macro FILE_bufsiz(fp).
3378 stdio_cnt (d_stdstdio.U):
3379 This variable defines how, given a FILE pointer, fp, to access the
3380 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3381 be used to define the macro FILE_cnt(fp).
3383 stdio_filbuf (d_stdstdio.U):
3384 This variable defines how, given a FILE pointer, fp, to tell
3385 stdio to refill it's internal buffers (?). This will
3386 be used to define the macro FILE_filbuf(fp).
3388 stdio_ptr (d_stdstdio.U):
3389 This variable defines how, given a FILE pointer, fp, to access the
3390 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3391 be used to define the macro FILE_ptr(fp).
3393 stdio_stream_array (stdio_streams.U):
3394 This variable tells the name of the array holding the stdio streams.
3395 Usual values include _iob, __iob, and __sF.
3397 strings (i_string.U):
3398 This variable holds the full path of the string header that will be
3399 used. Typically /usr/include/string.h or /usr/include/strings.h.
3402 This variable is defined but not used by Configure.
3403 The value is a plain '' and is not useful.
3405 subversion (patchlevel.U):
3406 The subversion level of this package.
3407 The value of subversion comes from the patchlevel.h file.
3408 In a version number such as 5.6.1, this is the "1".
3409 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3410 This is unique to perl.
3413 This variable holds the place where the manual is located on this
3414 system. It is not the place where the user wants to put his manual
3415 pages. Rather it is the place where Configure may look to find manual
3416 for unix commands (section 1 of the manual usually). See mansrc.
3419 This variable is defined but not used by Configure.
3420 The value is a plain '' and is not useful.
3423 This variable is defined but not used by Configure.
3424 The value is a plain '' and is not useful.
3427 This variable is defined but not used by Configure.
3428 The value is a plain '' and is not useful.
3431 This variable is defined but not used by Configure.
3432 The value is a plain '' and is not useful.
3435 This variable is used internally by Configure to determine the
3436 full pathname (if any) of the test program. After Configure runs,
3437 the value is reset to a plain "test" and is not useful.
3439 timeincl (i_time.U):
3440 This variable holds the full path of the included time header(s).
3442 timetype (d_time.U):
3443 This variable holds the type returned by time(). It can be long,
3444 or time_t on BSD sites (in which case <sys/types.h> should be
3445 included). Anyway, the type Time_t should be used.
3448 This variable is used internally by Configure to determine the
3449 full pathname (if any) of the touch program. After Configure runs,
3450 the value is reset to a plain "touch" and is not useful.
3453 This variable is used internally by Configure to determine the
3454 full pathname (if any) of the tr program. After Configure runs,
3455 the value is reset to a plain "tr" and is not useful.
3458 This variable contains the value to be passed to the tr(1)
3459 command to transliterate a newline. Typical values are
3460 '\012' and '\n'. This is needed for EBCDIC systems where
3461 newline is not necessarily '\012'.
3464 This variable is defined but not used by Configure.
3465 The value is a plain '' and is not useful.
3468 This variable is the size of an U16 in bytes.
3471 This variable contains the C type used for Perl's U16.
3474 This variable is the size of an U32 in bytes.
3477 This variable contains the C type used for Perl's U32.
3480 This variable is the size of an U64 in bytes.
3483 This variable contains the C type used for Perl's U64.
3486 This variable is the size of an U8 in bytes.
3489 This variable contains the C type used for Perl's U8.
3492 This variable contains the format string used for printing a Uid_t.
3494 uidsign (uidsign.U):
3495 This variable contains the signedness of a uidtype.
3496 1 for unsigned, -1 for signed.
3498 uidsize (uidsize.U):
3499 This variable contains the size of a uidtype in bytes.
3501 uidtype (uidtype.U):
3502 This variable defines Uid_t to be something like uid_t, int,
3503 ushort, or whatever type is used to declare user ids in the kernel.
3506 This variable is used internally by Configure to determine the
3507 full pathname (if any) of the uname program. After Configure runs,
3508 the value is reset to a plain "uname" and is not useful.
3511 This variable is used internally by Configure to determine the
3512 full pathname (if any) of the uniq program. After Configure runs,
3513 the value is reset to a plain "uniq" and is not useful.
3515 uquadtype (quadtype.U):
3516 This variable defines Uquad_t to be something like unsigned long,
3517 unsigned int, unsigned long long, uint64_t, or whatever type is
3518 used for 64-bit integers.
3520 use5005threads (usethreads.U):
3521 This variable conditionally defines the USE_5005THREADS symbol,
3522 and indicates that Perl should be built to use the 5.005-based
3523 threading implementation.
3525 use64bitall (use64bits.U):
3526 This variable conditionally defines the USE_64_BIT_ALL symbol,
3527 and indicates that 64-bit integer types should be used
3528 when available. The maximal possible
3529 64-bitness is employed: LP64 or ILP64, meaning that you will
3530 be able to use more than 2 gigabytes of memory. This mode is
3531 even more binary incompatible than USE_64_BIT_INT. You may not
3532 be able to run the resulting executable in a 32-bit CPU at all or
3533 you may need at least to reboot your OS to 64-bit mode.
3535 use64bitint (use64bits.U):
3536 This variable conditionally defines the USE_64_BIT_INT symbol,
3537 and indicates that 64-bit integer types should be used
3538 when available. The minimal possible 64-bitness
3539 is employed, just enough to get 64-bit integers into Perl.
3540 This may mean using for example "long longs", while your memory
3541 may still be limited to 2 gigabytes.
3544 This variable indicates if the system supports dynamic
3545 loading of some sort. See also dlsrc and dlobj.
3547 useithreads (usethreads.U):
3548 This variable conditionally defines the USE_ITHREADS symbol,
3549 and indicates that Perl should be built to use the interpreter-based
3550 threading implementation.
3552 uselargefiles (uselfs.U):
3553 This variable conditionally defines the USE_LARGE_FILES symbol,
3554 and indicates that large file interfaces should be used when
3557 uselongdouble (uselongdbl.U):
3558 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3559 and indicates that long doubles should be used when available.
3561 usemorebits (usemorebits.U):
3562 This variable conditionally defines the USE_MORE_BITS symbol,
3563 and indicates that explicit 64-bit interfaces and long doubles
3564 should be used when available.
3566 usemultiplicity (usemultiplicity.U):
3567 This variable conditionally defines the MULTIPLICITY symbol,
3568 and indicates that Perl should be built to use multiplicity.
3570 usemymalloc (mallocsrc.U):
3571 This variable contains y if the malloc that comes with this package
3572 is desired over the system's version of malloc. People often include
3573 special versions of malloc for effiency, but such versions are often
3574 less portable. See also mallocsrc and mallocobj.
3575 If this is 'y', then -lmalloc is removed from $libs.
3578 This variable contains 'true' or 'false' depending whether the
3579 nm extraction is wanted or not.
3581 useopcode (Extensions.U):
3582 This variable holds either 'true' or 'false' to indicate
3583 whether the Opcode extension should be used. The sole
3584 use for this currently is to allow an easy mechanism
3585 for users to skip the Opcode extension from the Configure
3588 useperlio (useperlio.U):
3589 This variable conditionally defines the USE_PERLIO symbol,
3590 and indicates that the PerlIO abstraction should be
3593 useposix (Extensions.U):
3594 This variable holds either 'true' or 'false' to indicate
3595 whether the POSIX extension should be used. The sole
3596 use for this currently is to allow an easy mechanism
3597 for hints files to indicate that POSIX will not compile
3598 on a particular system.
3601 This variable is set to true when the user agrees to use sfio.
3602 It is set to false when sfio is not available or when the user
3603 explicitely requests not to use sfio. It is here primarily so
3604 that command-line settings can override the auto-detection of
3605 d_sfio without running into a "WHOA THERE".
3607 useshrplib (libperl.U):
3608 This variable is set to 'yes' if the user wishes
3609 to build a shared libperl, and 'no' otherwise.
3611 usesocks (usesocks.U):
3612 This variable conditionally defines the USE_SOCKS symbol,
3613 and indicates that Perl should be built to use SOCKS.
3615 usethreads (usethreads.U):
3616 This variable conditionally defines the USE_THREADS symbol,
3617 and indicates that Perl should be built to use threads.
3619 usevendorprefix (vendorprefix.U):
3620 This variable tells whether the vendorprefix
3621 and consequently other vendor* paths are in use.
3623 usevfork (d_vfork.U):
3624 This variable is set to true when the user accepts to use vfork.
3625 It is set to false when no vfork is available or when the user
3626 explicitely requests not to use vfork.
3629 This variable holds the path of the include files, which is
3630 usually /usr/include. It is mainly used by other Configure units.
3633 This variable is defined but not used by Configure.
3634 The value is a plain '' and is not useful.
3636 uvoformat (perlxvf.U):
3637 This variable contains the format string used for printing
3638 a Perl UV as an unsigned octal integer.
3641 This variable is the size of a UV in bytes.
3644 This variable contains the C type used for Perl's UV.
3646 uvuformat (perlxvf.U):
3647 This variable contains the format string used for printing
3648 a Perl UV as an unsigned decimal integer.
3650 uvxformat (perlxvf.U):
3651 This variable contains the format string used for printing
3652 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3654 uvXUformat (perlxvf.U):
3655 This variable contains the format string used for printing
3656 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3658 vendorarch (vendorarch.U):
3659 This variable contains the value of the PERL_VENDORARCH symbol.
3660 It may have a ~ on the front.
3661 The standard distribution will put nothing in this directory.
3662 Vendors who distribute perl may wish to place their own
3663 architecture-dependent modules and extensions in this directory with
3664 MakeMaker Makefile.PL INSTALLDIRS=vendor
3665 or equivalent. See INSTALL for details.
3667 vendorarchexp (vendorarch.U):
3668 This variable is the ~name expanded version of vendorarch, so that you
3669 may use it directly in Makefiles or shell scripts.
3671 vendorbin (vendorbin.U):
3672 This variable contains the eventual value of the VENDORBIN symbol.
3673 It may have a ~ on the front.
3674 The standard distribution will put nothing in this directory.
3675 Vendors who distribute perl may wish to place additional
3676 binaries in this directory with
3677 MakeMaker Makefile.PL INSTALLDIRS=vendor
3678 or equivalent. See INSTALL for details.
3680 vendorbinexp (vendorbin.U):
3681 This variable is the ~name expanded version of vendorbin, so that you
3682 may use it directly in Makefiles or shell scripts.
3684 vendorlib (vendorlib.U):
3685 This variable contains the eventual value of the VENDORLIB symbol,
3686 which is the name of the private library for this package.
3687 The standard distribution will put nothing in this directory.
3688 Vendors who distribute perl may wish to place their own
3689 modules in this directory with
3690 MakeMaker Makefile.PL INSTALLDIRS=vendor
3691 or equivalent. See INSTALL for details.
3693 vendorlib_stem (vendorlib.U):
3694 This variable is $vendorlibexp with any trailing version-specific component
3695 removed. The elements in inc_version_list (inc_version_list.U) can
3696 be tacked onto this variable to generate a list of directories to search.
3698 vendorlibexp (vendorlib.U):
3699 This variable is the ~name expanded version of vendorlib, so that you
3700 may use it directly in Makefiles or shell scripts.
3702 vendorprefix (vendorprefix.U):
3703 This variable holds the full absolute path of the directory below
3704 which the vendor will install add-on packages.
3705 See INSTALL for usage and examples.
3707 vendorprefixexp (vendorprefix.U):
3708 This variable holds the full absolute path of the directory below
3709 which the vendor will install add-on packages. Derived from vendorprefix.
3711 version (patchlevel.U):
3712 The full version number of this package, such as 5.6.1 (or 5_6_1).
3713 This combines revision, patchlevel, and subversion to get the
3714 full version number, including any possible subversions.
3715 This is suitable for use as a directory name, and hence is
3716 filesystem dependent.
3719 This variable is defined but not used by Configure.
3720 The value is a plain '' and is not useful.
3722 voidflags (voidflags.U):
3723 This variable contains the eventual value of the VOIDFLAGS symbol,
3724 which indicates how much support of the void type is given by this
3725 compiler. See VOIDFLAGS for more info.
3728 This variable holds extra path (space-separated) used to find
3729 libraries on this platform, for example CPU-specific libraries
3730 (on multi-CPU platforms) may be listed here.
3732 xs_apiversion (xs_apiversion.U):
3733 This variable contains the version of the oldest perl binary
3734 compatible with the present perl. perl.c:incpush() and
3735 lib/lib.pm will automatically search in $sitearch for older
3736 directories across major versions back to xs_apiversion.
3737 This is only useful if you have a perl library directory tree
3738 structured like the default one.
3739 See INSTALL for how this works.
3740 The versioned site_perl directory was introduced in 5.005,
3741 so that is the lowest possible value.
3742 Since this can depend on compile time options (such as
3743 bincompat) it is set by Configure. Other non-default sources
3744 of potential incompatibility, such as multiplicity, threads,
3745 debugging, 64bits, sfio, etc., are not checked for currently,
3746 though in principle we could go snooping around in old
3750 This variable is defined but not used by Configure.
3751 The value is a plain '' and is not useful.
3754 This variable is used internally by Configure to determine the
3755 full pathname (if any) of the zip program. After Configure runs,
3756 the value is reset to a plain "zip" and is not useful.