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' 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_ptr_lval_nochange_cnt (d_stdstdio.U):
1482 This symbol is defined if using the FILE_ptr macro as an lvalue
1483 to increase the pointer by n leaves File_cnt(fp) unchanged.
1485 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1486 This symbol is defined if using the FILE_ptr macro as an lvalue
1487 to increase the pointer by n has the side effect of decreasing the
1488 value of File_cnt(fp) by n.
1490 d_stdio_stream_array (stdio_streams.U):
1491 This variable tells whether there is an array holding
1494 d_stdiobase (d_stdstdio.U):
1495 This variable conditionally defines USE_STDIO_BASE if this system
1496 has a FILE structure declaring a usable _base field (or equivalent)
1499 d_stdstdio (d_stdstdio.U):
1500 This variable conditionally defines USE_STDIO_PTR if this system
1501 has a FILE structure declaring usable _ptr and _cnt fields (or
1502 equivalent) in stdio.h.
1504 d_strchr (d_strchr.U):
1505 This variable conditionally defines HAS_STRCHR if strchr() and
1506 strrchr() are available for string searching.
1508 d_strcoll (d_strcoll.U):
1509 This variable conditionally defines HAS_STRCOLL if strcoll() is
1510 available to compare strings using collating information.
1512 d_strctcpy (d_strctcpy.U):
1513 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1514 indicates to the C program that this C compiler knows how to copy
1517 d_strerrm (d_strerror.U):
1518 This variable holds what Strerrr is defined as to translate an error
1519 code condition into an error message string. It could be 'strerror'
1520 or a more complex macro emulating strrror with sys_errlist[], or the
1521 "unknown" string when both strerror and sys_errlist are missing.
1523 d_strerror (d_strerror.U):
1524 This variable conditionally defines HAS_STRERROR if strerror() is
1525 available to translate error numbers to strings.
1527 d_strtod (d_strtod.U):
1528 This variable conditionally defines the HAS_STRTOD symbol, which
1529 indicates to the C program that the strtod() routine is available
1530 to provide better numeric string conversion than atof().
1532 d_strtol (d_strtol.U):
1533 This variable conditionally defines the HAS_STRTOL symbol, which
1534 indicates to the C program that the strtol() routine is available
1535 to provide better numeric string conversion than atoi() and friends.
1537 d_strtold (d_strtold.U):
1538 This variable conditionally defines the HAS_STRTOLD symbol, which
1539 indicates to the C program that the strtold() routine is available.
1541 d_strtoll (d_strtoll.U):
1542 This variable conditionally defines the HAS_STRTOLL symbol, which
1543 indicates to the C program that the strtoll() routine is available.
1545 d_strtoul (d_strtoul.U):
1546 This variable conditionally defines the HAS_STRTOUL symbol, which
1547 indicates to the C program that the strtoul() routine is available
1548 to provide conversion of strings to unsigned long.
1550 d_strtoull (d_strtoull.U):
1551 This variable conditionally defines the HAS_STRTOULL symbol, which
1552 indicates to the C program that the strtoull() routine is available.
1554 d_strtouq (d_strtouq.U):
1555 This variable conditionally defines the HAS_STRTOUQ symbol, which
1556 indicates to the C program that the strtouq() routine is available.
1558 d_strxfrm (d_strxfrm.U):
1559 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1560 available to transform strings.
1562 d_suidsafe (d_dosuid.U):
1563 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1564 if setuid scripts can be secure. This test looks in /dev/fd/.
1566 d_symlink (d_symlink.U):
1567 This variable conditionally defines the HAS_SYMLINK symbol, which
1568 indicates to the C program that the symlink() routine is available
1569 to create symbolic links.
1571 d_syscall (d_syscall.U):
1572 This variable conditionally defines HAS_SYSCALL if syscall() is
1573 available call arbitrary system calls.
1575 d_sysconf (d_sysconf.U):
1576 This variable conditionally defines the HAS_SYSCONF symbol, which
1577 indicates to the C program that the sysconf() routine is available
1578 to determine system related limits and options.
1580 d_sysernlst (d_strerror.U):
1581 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1582 is available to translate error numbers to the symbolic name.
1584 d_syserrlst (d_strerror.U):
1585 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1586 available to translate error numbers to strings.
1588 d_system (d_system.U):
1589 This variable conditionally defines HAS_SYSTEM if system() is
1590 available to issue a shell command.
1592 d_tcgetpgrp (d_tcgtpgrp.U):
1593 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1594 indicates to the C program that the tcgetpgrp() routine is available.
1595 to get foreground process group ID.
1597 d_tcsetpgrp (d_tcstpgrp.U):
1598 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1599 indicates to the C program that the tcsetpgrp() routine is available
1600 to set foreground process group ID.
1602 d_telldir (d_readdir.U):
1603 This variable conditionally defines HAS_TELLDIR if telldir() is
1606 d_telldirproto (d_telldirproto.U):
1607 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1608 which indicates to the C program that the system provides
1609 a prototype for the telldir() function. Otherwise, it is
1610 up to the program to supply one.
1613 This variable conditionally defines the HAS_TIME symbol, which indicates
1614 that the time() routine exists. The time() routine is normaly
1615 provided on UNIX systems.
1617 d_times (d_times.U):
1618 This variable conditionally defines the HAS_TIMES symbol, which indicates
1619 that the times() routine exists. The times() routine is normaly
1620 provided on UNIX systems. You may have to include <sys/times.h>.
1622 d_truncate (d_truncate.U):
1623 This variable conditionally defines HAS_TRUNCATE if truncate() is
1624 available to truncate files.
1626 d_tzname (d_tzname.U):
1627 This variable conditionally defines HAS_TZNAME if tzname[] is
1628 available to access timezone names.
1630 d_umask (d_umask.U):
1631 This variable conditionally defines the HAS_UMASK symbol, which
1632 indicates to the C program that the umask() routine is available.
1633 to set and get the value of the file creation mask.
1635 d_uname (d_gethname.U):
1636 This variable conditionally defines the HAS_UNAME symbol, which
1637 indicates to the C program that the uname() routine may be
1638 used to derive the host name.
1640 d_union_semun (d_union_semun.U):
1641 This variable conditionally defines HAS_UNION_SEMUN if the
1642 union semun is defined by including <sys/sem.h>.
1644 d_ustat (d_ustat.U):
1645 This variable conditionally defines HAS_USTAT if ustat() is
1646 available to query file system statistics by dev_t.
1648 d_vendorarch (vendorarch.U):
1649 This variable conditionally defined PERL_VENDORARCH.
1651 d_vendorbin (vendorbin.U):
1652 This variable conditionally defines PERL_VENDORBIN.
1654 d_vendorlib (vendorlib.U):
1655 This variable conditionally defines PERL_VENDORLIB.
1657 d_vfork (d_vfork.U):
1658 This variable conditionally defines the HAS_VFORK symbol, which
1659 indicates the vfork() routine is available.
1661 d_void_closedir (d_closedir.U):
1662 This variable conditionally defines VOID_CLOSEDIR if closedir()
1663 does not return a value.
1665 d_voidsig (d_voidsig.U):
1666 This variable conditionally defines VOIDSIG if this system
1667 declares "void (*signal(...))()" in signal.h. The old way was to
1668 declare it as "int (*signal(...))()".
1670 d_voidtty (i_sysioctl.U):
1671 This variable conditionally defines USE_IOCNOTTY to indicate that the
1672 ioctl() call with TIOCNOTTY should be used to void tty association.
1673 Otherwise (on USG probably), it is enough to close the standard file
1674 decriptors and do a setpgrp().
1676 d_volatile (d_volatile.U):
1677 This variable conditionally defines the HASVOLATILE symbol, which
1678 indicates to the C program that this C compiler knows about the
1679 volatile declaration.
1681 d_vprintf (d_vprintf.U):
1682 This variable conditionally defines the HAS_VPRINTF symbol, which
1683 indicates to the C program that the vprintf() routine is available
1684 to printf with a pointer to an argument list.
1686 d_wait4 (d_wait4.U):
1687 This variable conditionally defines the HAS_WAIT4 symbol, which
1688 indicates the wait4() routine is available.
1690 d_waitpid (d_waitpid.U):
1691 This variable conditionally defines HAS_WAITPID if waitpid() is
1692 available to wait for child process.
1694 d_wcstombs (d_wcstombs.U):
1695 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1696 indicates to the C program that the wcstombs() routine is available
1697 to convert wide character strings to multibyte strings.
1699 d_wctomb (d_wctomb.U):
1700 This variable conditionally defines the HAS_WCTOMB symbol, which
1701 indicates to the C program that the wctomb() routine is available
1702 to convert a wide character to a multibyte.
1705 This variable conditionally defines the symbol XENIX, which alerts
1706 the C program that it runs under Xenix.
1709 This variable is used internally by Configure to determine the
1710 full pathname (if any) of the date program. After Configure runs,
1711 the value is reset to a plain "date" and is not useful.
1713 db_hashtype (i_db.U):
1714 This variable contains the type of the hash structure element
1715 in the <db.h> header file. In older versions of DB, it was
1716 int, while in newer ones it is u_int32_t.
1718 db_prefixtype (i_db.U):
1719 This variable contains the type of the prefix structure element
1720 in the <db.h> header file. In older versions of DB, it was
1721 int, while in newer ones it is size_t.
1723 defvoidused (voidflags.U):
1724 This variable contains the default value of the VOIDUSED symbol (15).
1726 direntrytype (i_dirent.U):
1727 This symbol is set to 'struct direct' or 'struct dirent' depending on
1728 whether dirent is available or not. You should use this pseudo type to
1729 portably declare your directory entries.
1732 This variable contains the extension that is to be used for the
1733 dynamically loaded modules that perl generaties.
1736 This variable contains the name of the dynamic loading file that
1737 will be used with the package.
1739 doublesize (doublesize.U):
1740 This variable contains the value of the DOUBLESIZE symbol, which
1741 indicates to the C program how many bytes there are in a double.
1743 drand01 (randfunc.U):
1744 Indicates the macro to be used to generate normalized
1745 random numbers. Uses randfunc, often divided by
1746 (double) (((unsigned long) 1 << randbits)) in order to
1747 normalize the result.
1748 In C programs, the macro 'Drand01' is mapped to drand01.
1750 dynamic_ext (Extensions.U):
1751 This variable holds a list of XS extension files we want to
1752 link dynamically into the package. It is used by Makefile.
1754 eagain (nblock_io.U):
1755 This variable bears the symbolic errno code set by read() when no
1756 data is present on the file and non-blocking I/O was enabled (otherwise,
1757 read() blocks naturally).
1760 This variable conditionally defines EBCDIC if this
1761 system uses EBCDIC encoding. Among other things, this
1762 means that the character ranges are not contiguous.
1766 This variable is used internally by Configure to determine the
1767 full pathname (if any) of the echo program. After Configure runs,
1768 the value is reset to a plain "echo" and is not useful.
1771 This variable is used internally by Configure to determine the
1772 full pathname (if any) of the egrep program. After Configure runs,
1773 the value is reset to a plain "egrep" and is not useful.
1776 This variable is defined but not used by Configure.
1777 The value is a plain '' and is not useful.
1780 When running under Eunice this variable contains a command which will
1781 convert a shell script to the proper form of text file for it to be
1782 executable by the shell. On other systems it is a no-op.
1785 This is an old synonym for _exe.
1788 This variable is used internally by Configure to determine the
1789 full pathname (if any) of the expr program. After Configure runs,
1790 the value is reset to a plain "expr" and is not useful.
1792 extensions (Extensions.U):
1793 This variable holds a list of all extension files (both XS and
1794 non-xs linked into the package. It is propagated to Config.pm
1795 and is typically used to test whether a particular extesion
1798 fflushall (fflushall.U):
1799 This symbol, if defined, tells that to flush
1800 all pending stdio output one must loop through all
1801 the stdio file handles stored in an array and fflush them.
1802 Note that if fflushNULL is defined, fflushall will not
1803 even be probed for and will be left undefined.
1805 fflushNULL (fflushall.U):
1806 This symbol, if defined, tells that fflush(NULL) does flush
1807 all pending stdio output.
1810 This variable is defined but not used by Configure.
1811 The value is a plain '' and is not useful.
1813 firstmakefile (Unix.U):
1814 This variable defines the first file searched by make. On unix,
1815 it is makefile (then Makefile). On case-insensitive systems,
1816 it might be something else. This is only used to deal with
1817 convoluted make depend tricks.
1820 This variable is defined but not used by Configure.
1821 The value is a plain '' and is not useful.
1823 fpossize (fpossize.U):
1824 This variable contains the size of a fpostype in bytes.
1826 fpostype (fpostype.U):
1827 This variable defines Fpos_t to be something like fpos_t, long,
1828 uint, or whatever type is used to declare file positions in libc.
1830 freetype (mallocsrc.U):
1831 This variable contains the return type of free(). It is usually
1832 void, but occasionally int.
1835 This variable contains the full pathname to 'ar', whether or
1836 not the user has specified 'portability'. This is only used
1840 This variable contains the full pathname to 'csh', whether or
1841 not the user has specified 'portability'. This is only used
1842 in the compiled C program, and we assume that all systems which
1843 can share this executable will have the same full pathname to
1846 full_sed (Loc_sed.U):
1847 This variable contains the full pathname to 'sed', whether or
1848 not the user has specified 'portability'. This is only used
1849 in the compiled C program, and we assume that all systems which
1850 can share this executable will have the same full pathname to
1853 gccosandvers (gccvers.U):
1854 If GNU cc (gcc) is used, this variable the operating system and
1855 version used to compile the gcc. It is set to '' if not gcc,
1856 or if nothing useful can be parsed as the os version.
1858 gccversion (gccvers.U):
1859 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1860 indicate whether the compiler is version 1 or 2. This is used in
1861 setting some of the default cflags. It is set to '' if not gcc.
1864 This variable contains the format string used for printing a Gid_t.
1866 gidsign (gidsign.U):
1867 This variable contains the signedness of a gidtype.
1868 1 for unsigned, -1 for signed.
1870 gidsize (gidsize.U):
1871 This variable contains the size of a gidtype in bytes.
1873 gidtype (gidtype.U):
1874 This variable defines Gid_t to be something like gid_t, int,
1875 ushort, or whatever type is used to declare the return type
1876 of getgid(). Typically, it is the type of group ids in the kernel.
1879 This variable holds the general path (space-separated) used to
1880 find libraries. It may contain directories that do not exist on
1881 this platform, libpth is the cleaned-up version.
1884 This variable is used internally by Configure to determine the
1885 full pathname (if any) of the grep program. After Configure runs,
1886 the value is reset to a plain "grep" and is not useful.
1889 This variable contains a command that produces the text of the
1890 /etc/group file. This is normally "cat /etc/group", but can be
1891 "ypcat group" when NIS is used.
1892 On some systems, such as os390, there may be no equivalent
1893 command, in which case this variable is unset.
1895 groupstype (groupstype.U):
1896 This variable defines Groups_t to be something like gid_t, int,
1897 ushort, or whatever type is used for the second argument to
1898 getgroups() and setgroups(). Usually, this is the same as
1899 gidtype (gid_t), but sometimes it isn't.
1902 This variable is used internally by Configure to determine the
1903 full pathname (if any) of the gzip program. After Configure runs,
1904 the value is reset to a plain "gzip" and is not useful.
1906 h_fcntl (h_fcntl.U):
1907 This is variable gets set in various places to tell i_fcntl that
1908 <fcntl.h> should be included.
1910 h_sysfile (h_sysfile.U):
1911 This is variable gets set in various places to tell i_sys_file that
1912 <sys/file.h> should be included.
1915 Gives the type of hints used for previous answers. May be one of
1916 "default", "recommended" or "previous".
1919 This variable contains a command that produces the text of the
1920 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1921 "ypcat hosts" when NIS is used.
1922 On some systems, such as os390, there may be no equivalent
1923 command, in which case this variable is unset.
1926 This variable is the size of an I16 in bytes.
1929 This variable contains the C type used for Perl's I16.
1932 This variable is the size of an I32 in bytes.
1935 This variable contains the C type used for Perl's I32.
1938 This variable is the size of an I64 in bytes.
1941 This variable contains the C type used for Perl's I64.
1944 This variable is the size of an I8 in bytes.
1947 This variable contains the C type used for Perl's I8.
1949 i_arpainet (i_arpainet.U):
1950 This variable conditionally defines the I_ARPA_INET symbol,
1951 and indicates whether a C program should include <arpa/inet.h>.
1953 i_bsdioctl (i_sysioctl.U):
1954 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1955 indicates to the C program that <sys/bsdioctl.h> exists and should
1959 This variable conditionally defines the I_DB symbol, and indicates
1960 whether a C program may include Berkeley's DB include file <db.h>.
1963 This variable conditionally defines the I_DBM symbol, which
1964 indicates to the C program that <dbm.h> exists and should
1967 i_dirent (i_dirent.U):
1968 This variable conditionally defines I_DIRENT, which indicates
1969 to the C program that it should include <dirent.h>.
1972 This variable conditionally defines the I_DLD symbol, which
1973 indicates to the C program that <dld.h> (GNU dynamic loading)
1974 exists and should be included.
1976 i_dlfcn (i_dlfcn.U):
1977 This variable conditionally defines the I_DLFCN symbol, which
1978 indicates to the C program that <dlfcn.h> exists and should
1981 i_fcntl (i_fcntl.U):
1982 This variable controls the value of I_FCNTL (which tells
1983 the C program to include <fcntl.h>).
1985 i_float (i_float.U):
1986 This variable conditionally defines the I_FLOAT symbol, and indicates
1987 whether a C program may include <float.h> to get symbols like DBL_MAX
1988 or DBL_MIN, i.e. machine dependent floating point values.
1991 This variable conditionally defines the I_GDBM symbol, which
1992 indicates to the C program that <gdbm.h> exists and should
1996 This variable conditionally defines the I_GRP symbol, and indicates
1997 whether a C program should include <grp.h>.
1999 i_iconv (i_iconv.U):
2000 This variable conditionally defines the I_ICONV symbol, and indicates
2001 whether a C program should include <iconv.h>.
2003 i_ieeefp (i_ieeefp.U):
2004 This variable conditionally defines the I_IEEEFP symbol, and indicates
2005 whether a C program should include <ieeefp.h>.
2007 i_inttypes (i_inttypes.U):
2008 This variable conditionally defines the I_INTTYPES symbol,
2009 and indicates whether a C program should include <inttypes.h>.
2011 i_libutil (i_libutil.U):
2012 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2013 whether a C program should include <libutil.h>.
2015 i_limits (i_limits.U):
2016 This variable conditionally defines the I_LIMITS symbol, and indicates
2017 whether a C program may include <limits.h> to get symbols like WORD_BIT
2020 i_locale (i_locale.U):
2021 This variable conditionally defines the I_LOCALE symbol,
2022 and indicates whether a C program should include <locale.h>.
2024 i_machcthr (i_machcthr.U):
2025 This variable conditionally defines the I_MACH_CTHREADS symbol,
2026 and indicates whether a C program should include <mach/cthreads.h>.
2028 i_malloc (i_malloc.U):
2029 This variable conditionally defines the I_MALLOC symbol, and indicates
2030 whether a C program should include <malloc.h>.
2033 This variable conditionally defines the I_MATH symbol, and indicates
2034 whether a C program may include <math.h>.
2036 i_memory (i_memory.U):
2037 This variable conditionally defines the I_MEMORY symbol, and indicates
2038 whether a C program should include <memory.h>.
2040 i_mntent (i_mntent.U):
2041 This variable conditionally defines the I_MNTENT symbol, and indicates
2042 whether a C program should include <mntent.h>.
2045 This variable conditionally defines the I_NDBM symbol, which
2046 indicates to the C program that <ndbm.h> exists and should
2049 i_netdb (i_netdb.U):
2050 This variable conditionally defines the I_NETDB symbol, and indicates
2051 whether a C program should include <netdb.h>.
2053 i_neterrno (i_neterrno.U):
2054 This variable conditionally defines the I_NET_ERRNO symbol, which
2055 indicates to the C program that <net/errno.h> exists and should
2058 i_netinettcp (i_netinettcp.U):
2059 This variable conditionally defines the I_NETINET_TCP symbol,
2060 and indicates whether a C program should include <netinet/tcp.h>.
2063 This variable conditionally defines I_NETINET_IN, which indicates
2064 to the C program that it should include <netinet/in.h>. Otherwise,
2065 you may try <sys/in.h>.
2068 This variable conditionally defines the I_POLL symbol, and indicates
2069 whether a C program should include <poll.h>.
2072 This variable conditionally defines the I_PROT symbol, and indicates
2073 whether a C program should include <prot.h>.
2075 i_pthread (i_pthread.U):
2076 This variable conditionally defines the I_PTHREAD symbol,
2077 and indicates whether a C program should include <pthread.h>.
2080 This variable conditionally defines I_PWD, which indicates
2081 to the C program that it should include <pwd.h>.
2083 i_rpcsvcdbm (i_dbm.U):
2084 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2085 indicates to the C program that <rpcsvc/dbm.h> exists and should
2086 be included. Some System V systems might need this instead of <dbm.h>.
2089 This variable conditionally defines the I_SFIO symbol,
2090 and indicates whether a C program should include <sfio.h>.
2092 i_sgtty (i_termio.U):
2093 This variable conditionally defines the I_SGTTY symbol, which
2094 indicates to the C program that it should include <sgtty.h> rather
2097 i_shadow (i_shadow.U):
2098 This variable conditionally defines the I_SHADOW symbol, and indicates
2099 whether a C program should include <shadow.h>.
2101 i_socks (i_socks.U):
2102 This variable conditionally defines the I_SOCKS symbol, and indicates
2103 whether a C program should include <socks.h>.
2105 i_stdarg (i_varhdr.U):
2106 This variable conditionally defines the I_STDARG symbol, which
2107 indicates to the C program that <stdarg.h> exists and should
2110 i_stddef (i_stddef.U):
2111 This variable conditionally defines the I_STDDEF symbol, which
2112 indicates to the C program that <stddef.h> exists and should
2115 i_stdlib (i_stdlib.U):
2116 This variable conditionally defines the I_STDLIB symbol, which
2117 indicates to the C program that <stdlib.h> exists and should
2120 i_string (i_string.U):
2121 This variable conditionally defines the I_STRING symbol, which
2122 indicates that <string.h> should be included rather than <strings.h>.
2124 i_sunmath (i_sunmath.U):
2125 This variable conditionally defines the I_SUNMATH symbol, and indicates
2126 whether a C program should include <sunmath.h>.
2128 i_sysaccess (i_sysaccess.U):
2129 This variable conditionally defines the I_SYS_ACCESS symbol,
2130 and indicates whether a C program should include <sys/access.h>.
2132 i_sysdir (i_sysdir.U):
2133 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2134 whether a C program should include <sys/dir.h>.
2136 i_sysfile (i_sysfile.U):
2137 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2138 whether a C program should include <sys/file.h> to get R_OK and friends.
2140 i_sysfilio (i_sysioctl.U):
2141 This variable conditionally defines the I_SYS_FILIO symbol, which
2142 indicates to the C program that <sys/filio.h> exists and should
2143 be included in preference to <sys/ioctl.h>.
2146 This variable conditionally defines I_SYS_IN, which indicates
2147 to the C program that it should include <sys/in.h> instead of
2150 i_sysioctl (i_sysioctl.U):
2151 This variable conditionally defines the I_SYS_IOCTL symbol, which
2152 indicates to the C program that <sys/ioctl.h> exists and should
2155 i_syslog (i_syslog.U):
2156 This variable conditionally defines the I_SYSLOG symbol,
2157 and indicates whether a C program should include <syslog.h>.
2159 i_sysmman (i_sysmman.U):
2160 This variable conditionally defines the I_SYS_MMAN symbol, and
2161 indicates whether a C program should include <sys/mman.h>.
2163 i_sysmode (i_sysmode.U):
2164 This variable conditionally defines the I_SYSMODE symbol,
2165 and indicates whether a C program should include <sys/mode.h>.
2167 i_sysmount (i_sysmount.U):
2168 This variable conditionally defines the I_SYSMOUNT symbol,
2169 and indicates whether a C program should include <sys/mount.h>.
2171 i_sysndir (i_sysndir.U):
2172 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2173 whether a C program should include <sys/ndir.h>.
2175 i_sysparam (i_sysparam.U):
2176 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2177 whether a C program should include <sys/param.h>.
2179 i_sysresrc (i_sysresrc.U):
2180 This variable conditionally defines the I_SYS_RESOURCE symbol,
2181 and indicates whether a C program should include <sys/resource.h>.
2183 i_syssecrt (i_syssecrt.U):
2184 This variable conditionally defines the I_SYS_SECURITY symbol,
2185 and indicates whether a C program should include <sys/security.h>.
2187 i_sysselct (i_sysselct.U):
2188 This variable conditionally defines I_SYS_SELECT, which indicates
2189 to the C program that it should include <sys/select.h> in order to
2190 get the definition of struct timeval.
2192 i_syssockio (i_sysioctl.U):
2193 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2194 C program that socket ioctl codes may be found in <sys/sockio.h>
2195 instead of <sys/ioctl.h>.
2197 i_sysstat (i_sysstat.U):
2198 This variable conditionally defines the I_SYS_STAT symbol,
2199 and indicates whether a C program should include <sys/stat.h>.
2201 i_sysstatfs (i_sysstatfs.U):
2202 This variable conditionally defines the I_SYSSTATFS symbol,
2203 and indicates whether a C program should include <sys/statfs.h>.
2205 i_sysstatvfs (i_sysstatvfs.U):
2206 This variable conditionally defines the I_SYSSTATVFS symbol,
2207 and indicates whether a C program should include <sys/statvfs.h>.
2209 i_systime (i_time.U):
2210 This variable conditionally defines I_SYS_TIME, which indicates
2211 to the C program that it should include <sys/time.h>.
2213 i_systimek (i_time.U):
2214 This variable conditionally defines I_SYS_TIME_KERNEL, which
2215 indicates to the C program that it should include <sys/time.h>
2216 with KERNEL defined.
2218 i_systimes (i_systimes.U):
2219 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2220 whether a C program should include <sys/times.h>.
2222 i_systypes (i_systypes.U):
2223 This variable conditionally defines the I_SYS_TYPES symbol,
2224 and indicates whether a C program should include <sys/types.h>.
2226 i_sysuio (i_sysuio.U):
2227 This variable conditionally defines the I_SYSUIO symbol, and indicates
2228 whether a C program should include <sys/uio.h>.
2230 i_sysun (i_sysun.U):
2231 This variable conditionally defines I_SYS_UN, which indicates
2232 to the C program that it should include <sys/un.h> to get UNIX
2233 domain socket definitions.
2235 i_sysutsname (i_sysutsname.U):
2236 This variable conditionally defines the I_SYSUTSNAME symbol,
2237 and indicates whether a C program should include <sys/utsname.h>.
2239 i_sysvfs (i_sysvfs.U):
2240 This variable conditionally defines the I_SYSVFS symbol,
2241 and indicates whether a C program should include <sys/vfs.h>.
2243 i_syswait (i_syswait.U):
2244 This variable conditionally defines I_SYS_WAIT, which indicates
2245 to the C program that it should include <sys/wait.h>.
2247 i_termio (i_termio.U):
2248 This variable conditionally defines the I_TERMIO symbol, which
2249 indicates to the C program that it should include <termio.h> rather
2252 i_termios (i_termio.U):
2253 This variable conditionally defines the I_TERMIOS symbol, which
2254 indicates to the C program that the POSIX <termios.h> file is
2258 This variable conditionally defines I_TIME, which indicates
2259 to the C program that it should include <time.h>.
2261 i_unistd (i_unistd.U):
2262 This variable conditionally defines the I_UNISTD symbol, and indicates
2263 whether a C program should include <unistd.h>.
2265 i_ustat (i_ustat.U):
2266 This variable conditionally defines the I_USTAT symbol, and indicates
2267 whether a C program should include <ustat.h>.
2269 i_utime (i_utime.U):
2270 This variable conditionally defines the I_UTIME symbol, and indicates
2271 whether a C program should include <utime.h>.
2273 i_values (i_values.U):
2274 This variable conditionally defines the I_VALUES symbol, and indicates
2275 whether a C program may include <values.h> to get symbols like MAXLONG
2278 i_varargs (i_varhdr.U):
2279 This variable conditionally defines I_VARARGS, which indicates
2280 to the C program that it should include <varargs.h>.
2282 i_varhdr (i_varhdr.U):
2283 Contains the name of the header to be included to get va_dcl definition.
2284 Typically one of varargs.h or stdarg.h.
2286 i_vfork (i_vfork.U):
2287 This variable conditionally defines the I_VFORK symbol, and indicates
2288 whether a C program should include vfork.h.
2290 ignore_versioned_solibs (libs.U):
2291 This variable should be non-empty if non-versioned shared
2292 libraries (libfoo.so.x.y) are to be ignored (because they
2293 cannot be linked against).
2295 inc_version_list (inc_version_list.U):
2296 This variable specifies the list of subdirectories in over
2297 which perl.c:incpush() and lib/lib.pm will automatically
2298 search when adding directories to @INC. The elements in
2299 the list are separated by spaces. This is only useful
2300 if you have a perl library directory tree structured like the
2301 default one. See INSTALL for how this works. The versioned
2302 site_perl directory was introduced in 5.005, so that is the
2303 lowest possible value.
2305 inc_version_list_init (inc_version_list.U):
2306 This variable holds the same list as inc_version_list, but
2307 each item is enclosed in double quotes and separated by commas,
2308 suitable for use in the PERL_INC_VERSION_LIST initialization.
2311 This variable must preceed the normal include path to get hte
2312 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2313 Value can be "" or "/bsd43" on mips.
2316 This variable is defined but not used by Configure.
2317 The value is a plain '' and is not useful.
2319 installarchlib (archlib.U):
2320 This variable is really the same as archlibexp but may differ on
2321 those systems using AFS. For extra portability, only this variable
2322 should be used in makefiles.
2325 This variable is the same as binexp unless AFS is running in which case
2326 the user is explicitely prompted for it. This variable should always
2327 be used in your makefiles for maximum portability.
2329 installman1dir (man1dir.U):
2330 This variable is really the same as man1direxp, unless you are using
2331 AFS in which case it points to the read/write location whereas
2332 man1direxp only points to the read-only access location. For extra
2333 portability, you should only use this variable within your makefiles.
2335 installman3dir (man3dir.U):
2336 This variable is really the same as man3direxp, unless you are using
2337 AFS in which case it points to the read/write location whereas
2338 man3direxp only points to the read-only access location. For extra
2339 portability, you should only use this variable within your makefiles.
2341 installprefix (installprefix.U):
2342 This variable holds the name of the directory below which
2343 "make install" will install the package. For most users, this
2344 is the same as prefix. However, it is useful for
2345 installing the software into a different (usually temporary)
2346 location after which it can be bundled up and moved somehow
2347 to the final location specified by prefix.
2349 installprefixexp (installprefix.U):
2350 This variable holds the full absolute path of installprefix
2351 with all ~-expansion done.
2353 installprivlib (privlib.U):
2354 This variable is really the same as privlibexp but may differ on
2355 those systems using AFS. For extra portability, only this variable
2356 should be used in makefiles.
2358 installscript (scriptdir.U):
2359 This variable is usually the same as scriptdirexp, unless you are on
2360 a system running AFS, in which case they may differ slightly. You
2361 should always use this variable within your makefiles for portability.
2363 installsitearch (sitearch.U):
2364 This variable is really the same as sitearchexp but may differ on
2365 those systems using AFS. For extra portability, only this variable
2366 should be used in makefiles.
2368 installsitebin (sitebin.U):
2369 This variable is usually the same as sitebinexp, unless you are on
2370 a system running AFS, in which case they may differ slightly. You
2371 should always use this variable within your makefiles for portability.
2373 installsitelib (sitelib.U):
2374 This variable is really the same as sitelibexp but may differ on
2375 those systems using AFS. For extra portability, only this variable
2376 should be used in makefiles.
2378 installstyle (installstyle.U):
2379 This variable describes the "style" of the perl installation.
2380 This is intended to be useful for tools that need to
2381 manipulate entire perl distributions. Perl itself doesn't use
2382 this to find its libraries -- the library directories are
2383 stored directly in Config.pm. Currently, there are only two
2384 styles: "lib" and "lib/perl5". The default library locations
2385 (e.g. privlib, sitelib) are either $prefix/lib or
2386 $prefix/lib/perl5. The former is useful if $prefix is a
2387 directory dedicated to perl (e.g. /opt/perl), while the latter
2388 is useful if $prefix is shared by many packages, e.g. if
2390 This may later be extended to include other information, so
2391 be careful with pattern-matching on the results.
2392 For compatibility with perl5.005 and earlier, the default
2393 setting is based on whether or not $prefix contains the string
2396 installusrbinperl (instubperl.U):
2397 This variable tells whether Perl should be installed also as
2398 /usr/bin/perl in addition to
2401 installvendorarch (vendorarch.U):
2402 This variable is really the same as vendorarchexp but may differ on
2403 those systems using AFS. For extra portability, only this variable
2404 should be used in makefiles.
2406 installvendorbin (vendorbin.U):
2407 This variable is really the same as vendorbinexp but may differ on
2408 those systems using AFS. For extra portability, only this variable
2409 should be used in makefiles.
2411 installvendorlib (vendorlib.U):
2412 This variable is really the same as vendorlibexp but may differ on
2413 those systems using AFS. For extra portability, only this variable
2414 should be used in makefiles.
2416 intsize (intsize.U):
2417 This variable contains the value of the INTSIZE symbol, which
2418 indicates to the C program how many bytes there are in an int.
2420 ivdformat (perlxvf.U):
2421 This variable contains the format string used for printing
2422 a Perl IV as a signed decimal integer.
2425 This variable is the size of an IV in bytes.
2428 This variable contains the C type used for Perl's IV.
2430 known_extensions (Extensions.U):
2431 This variable holds a list of all XS extensions included in
2435 This variable is defined but not used by Configure.
2436 The value is a plain '' and is not useful.
2439 This variable indicates the program to be used to link
2440 libraries for dynamic loading. On some systems, it is 'ld'.
2441 On ELF systems, it should be $cc. Mostly, we'll try to respect
2442 the hint file setting.
2444 lddlflags (dlsrc.U):
2445 This variable contains any special flags that might need to be
2446 passed to $ld to create a shared library suitable for dynamic
2447 loading. It is up to the makefile to use it. For hpux, it
2448 should be '-b'. For sunos 4.1, it is empty.
2450 ldflags (ccflags.U):
2451 This variable contains any additional C loader flags desired by
2452 the user. It is up to the Makefile to use this.
2454 ldflags_uselargefiles (uselfs.U):
2455 This variable contains the loader flags needed by large file builds
2456 and added to ldflags by hints files.
2458 ldlibpthname (libperl.U):
2459 This variable holds the name of the shared library
2460 search path, often LD_LIBRARY_PATH. To get an empty
2461 string, the hints file must set this to 'none'.
2464 This variable is used internally by Configure to determine the
2465 full pathname (if any) of the less program. After Configure runs,
2466 the value is reset to a plain "less" and is not useful.
2469 This is an old synonym for _a.
2472 This variable contains the location of the C library.
2474 libperl (libperl.U):
2475 The perl executable is obtained by linking perlmain.c with
2476 libperl, any static extensions (usually just DynaLoader),
2477 and any other libraries needed on this system. libperl
2478 is usually libperl.a, but can also be libperl.so.xxx if
2479 the user wishes to build a perl executable with a shared
2483 This variable holds the general path (space-separated) used to find
2484 libraries. It is intended to be used by other units.
2487 This variable holds the additional libraries we want to use.
2488 It is up to the Makefile to deal with it.
2491 This variable holds the directory names aka dirnames of the libraries
2492 we found and accepted, duplicates are removed.
2495 This variable holds the filenames aka basenames of the libraries
2496 we found and accepted.
2499 This variable holds the full pathnames of the libraries
2500 we found and accepted.
2503 This variable holds the directory names probed for libraries.
2505 libswanted (Myinit.U):
2506 This variable holds a list of all the libraries we want to
2507 search. The order is chosen to pick up the c library
2508 ahead of ucb or bsd libraries for SVR4.
2510 libswanted_uselargefiles (uselfs.U):
2511 This variable contains the libraries needed by large file builds
2512 and added to ldflags by hints files. It is a space separated list
2513 of the library names without the "lib" prefix or any suffix, just
2517 This variable is defined but not used by Configure.
2518 The value is a plain '' and is not useful.
2521 This variable is defined but not used by Configure.
2522 The value is a plain '' and is not useful.
2524 lkflags (ccflags.U):
2525 This variable contains any additional C partial linker flags desired by
2526 the user. It is up to the Makefile to use this.
2529 This variable is used internally by Configure to determine the
2530 full pathname (if any) of the ln program. After Configure runs,
2531 the value is reset to a plain "ln" and is not useful.
2534 This variable holds the name of the command to make
2535 symbolic links (if they are supported). It can be used
2536 in the Makefile. It is either 'ln -s' or 'ln'
2538 locincpth (ccflags.U):
2539 This variable contains a list of additional directories to be
2540 searched by the compiler. The appropriate '-I' directives will
2541 be added to ccflags. This is intended to simplify setting
2542 local directories from the Configure command line.
2543 It's not much, but it parallels the loclibpth stuff in libpth.U.
2545 loclibpth (libpth.U):
2546 This variable holds the paths (space-separated) used to find local
2547 libraries. It is prepended to libpth, and is intended to be easily
2548 set from the command line.
2550 longdblsize (d_longdbl.U):
2551 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2552 indicates to the C program how many bytes there are in a long double,
2553 if this system supports long doubles.
2555 longlongsize (d_longlong.U):
2556 This variable contains the value of the LONGLONGSIZE symbol, which
2557 indicates to the C program how many bytes there are in a long long,
2558 if this system supports long long.
2560 longsize (intsize.U):
2561 This variable contains the value of the LONGSIZE symbol, which
2562 indicates to the C program how many bytes there are in a long.
2565 This variable is defined but not used by Configure.
2566 The value is a plain '' and is not useful.
2569 This variable is defined but not used by Configure.
2570 The value is a plain '' and is not useful.
2573 This variable is used internally by Configure to determine the
2574 full pathname (if any) of the ls program. After Configure runs,
2575 the value is reset to a plain "ls" and is not useful.
2577 lseeksize (lseektype.U):
2578 This variable defines lseektype to be something like off_t, long,
2579 or whatever type is used to declare lseek offset's type in the
2580 kernel (which also appears to be lseek's return type).
2582 lseektype (lseektype.U):
2583 This variable defines lseektype to be something like off_t, long,
2584 or whatever type is used to declare lseek offset's type in the
2585 kernel (which also appears to be lseek's return type).
2588 This variable is defined but not used by Configure.
2589 The value is a plain '' and is not useful.
2592 This variable is defined but not used by Configure.
2593 The value is a plain '' and is not useful.
2596 This variable is used internally by Configure to determine the
2597 full pathname (if any) of the make program. After Configure runs,
2598 the value is reset to a plain "make" and is not useful.
2600 make_set_make (make.U):
2601 Some versions of 'make' set the variable MAKE. Others do not.
2602 This variable contains the string to be included in Makefile.SH
2603 so that MAKE is set if needed, and not if not needed.
2604 Possible values are:
2605 make_set_make='#' # If your make program handles this for you,
2606 make_set_make="MAKE=$make" # if it doesn't.
2607 I used a comment character so that we can distinguish a
2608 'set' value (from a previous config.sh or Configure '-D' option)
2609 from an uncomputed value.
2611 mallocobj (mallocsrc.U):
2612 This variable contains the name of the malloc.o that this package
2613 generates, if that malloc.o is preferred over the system malloc.
2614 Otherwise the value is null. This variable is intended for generating
2615 Makefiles. See mallocsrc.
2617 mallocsrc (mallocsrc.U):
2618 This variable contains the name of the malloc.c that comes with
2619 the package, if that malloc.c is preferred over the system malloc.
2620 Otherwise the value is null. This variable is intended for generating
2623 malloctype (mallocsrc.U):
2624 This variable contains the kind of ptr returned by malloc and realloc.
2626 man1dir (man1dir.U):
2627 This variable contains the name of the directory in which manual
2628 source pages are to be put. It is the responsibility of the
2629 Makefile.SH to get the value of this into the proper command.
2630 You must be prepared to do the ~name expansion yourself.
2632 man1direxp (man1dir.U):
2633 This variable is the same as the man1dir variable, but is filename
2634 expanded at configuration time, for convenient use in makefiles.
2636 man1ext (man1dir.U):
2637 This variable contains the extension that the manual page should
2638 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2641 man3dir (man3dir.U):
2642 This variable contains the name of the directory in which manual
2643 source pages are to be put. It is the responsibility of the
2644 Makefile.SH to get the value of this into the proper command.
2645 You must be prepared to do the ~name expansion yourself.
2647 man3direxp (man3dir.U):
2648 This variable is the same as the man3dir variable, but is filename
2649 expanded at configuration time, for convenient use in makefiles.
2651 man3ext (man3dir.U):
2652 This variable contains the extension that the manual page should
2653 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2657 This variable is used internally by Configure to determine the
2658 full pathname (if any) of the Mcc program. After Configure runs,
2659 the value is reset to a plain "Mcc" and is not useful.
2661 mips_type (usrinc.U):
2662 This variable holds the environment type for the mips system.
2663 Possible values are "BSD 4.3" and "System V".
2666 This variable is used internally by Configure to determine the
2667 full pathname (if any) of the mkdir program. After Configure runs,
2668 the value is reset to a plain "mkdir" and is not useful.
2670 mmaptype (d_mmap.U):
2671 This symbol contains the type of pointer returned by mmap()
2672 (and simultaneously the type of the first argument).
2673 It can be 'void *' or 'caddr_t'.
2675 modetype (modetype.U):
2676 This variable defines modetype to be something like mode_t,
2677 int, unsigned short, or whatever type is used to declare file
2678 modes for system calls.
2681 This variable is used internally by Configure to determine the
2682 full pathname (if any) of the more program. After Configure runs,
2683 the value is reset to a plain "more" and is not useful.
2685 multiarch (multiarch.U):
2686 This variable conditionally defines the MULTIARCH symbol
2687 which signifies the presence of multiplatform files.
2688 This is normally set by hints files.
2691 This variable is defined but not used by Configure.
2692 The value is a plain '' and is not useful.
2694 myarchname (archname.U):
2695 This variable holds the architecture name computed by Configure in
2696 a previous run. It is not intended to be perused by any user and
2697 should never be set in a hint file.
2699 mydomain (myhostname.U):
2700 This variable contains the eventual value of the MYDOMAIN symbol,
2701 which is the domain of the host the program is going to run on.
2702 The domain must be appended to myhostname to form a complete host name.
2703 The dot comes with mydomain, and need not be supplied by the program.
2705 myhostname (myhostname.U):
2706 This variable contains the eventual value of the MYHOSTNAME symbol,
2707 which is the name of the host the program is going to run on.
2708 The domain is not kept with hostname, but must be gotten from mydomain.
2709 The dot comes with mydomain, and need not be supplied by the program.
2711 myuname (Oldconfig.U):
2712 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2713 pseudo variables assignments in the output are stripped, thank you. The
2714 whole thing is then lower-cased.
2717 This variable contains the '-n' flag if that is what causes the echo
2718 command to suppress newline. Otherwise it is null. Correct usage is
2719 $echo $n "prompt for a question: $c".
2721 netdb_hlen_type (netdbtype.U):
2722 This variable holds the type used for the 2nd argument to
2723 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2724 This is only useful if you have gethostbyaddr(), naturally.
2726 netdb_host_type (netdbtype.U):
2727 This variable holds the type used for the 1st argument to
2728 gethostbyaddr(). Usually, this is char * or void *, possibly
2729 with or without a const prefix.
2730 This is only useful if you have gethostbyaddr(), naturally.
2732 netdb_name_type (netdbtype.U):
2733 This variable holds the type used for the argument to
2734 gethostbyname(). Usually, this is char * or const char *.
2735 This is only useful if you have gethostbyname(), naturally.
2737 netdb_net_type (netdbtype.U):
2738 This variable holds the type used for the 1st argument to
2739 getnetbyaddr(). Usually, this is int or long.
2740 This is only useful if you have getnetbyaddr(), naturally.
2743 This variable is used internally by Configure to determine the
2744 full pathname (if any) of the nm program. After Configure runs,
2745 the value is reset to a plain "nm" and is not useful.
2748 This variable holds the options that may be necessary for nm.
2750 nm_so_opt (usenm.U):
2751 This variable holds the options that may be necessary for nm
2752 to work on a shared library but that can not be used on an
2753 archive library. Currently, this is only used by Linux, where
2754 nm --dynamic is *required* to get symbols from an ELF library which
2755 has been stripped, but nm --dynamic is *fatal* on an archive library.
2756 Maybe Linux should just always set usenm=false.
2758 nonxs_ext (Extensions.U):
2759 This variable holds a list of all non-xs extensions included
2760 in the package. All of them will be built.
2763 This variable is used internally by Configure to determine the
2764 full pathname (if any) of the nroff program. After Configure runs,
2765 the value is reset to a plain "nroff" and is not useful.
2767 nveformat (perlxvf.U):
2768 This variable contains the format string used for printing
2769 a Perl NV using %e-ish floating point format.
2771 nvEUformat (perlxvf.U):
2772 This variable contains the format string used for printing
2773 a Perl NV using %E-ish floating point format.
2775 nvfformat (perlxvf.U):
2776 This variable confains the format string used for printing
2777 a Perl NV using %f-ish floating point format.
2779 nvFUformat (perlxvf.U):
2780 This variable confains the format string used for printing
2781 a Perl NV using %F-ish floating point format.
2783 nvgformat (perlxvf.U):
2784 This variable contains the format string used for printing
2785 a Perl NV using %g-ish floating point format.
2787 nvGUformat (perlxvf.U):
2788 This variable contains the format string used for printing
2789 a Perl NV using %G-ish floating point format.
2792 This variable is the size of an NV in bytes.
2795 This variable contains the C type used for Perl's NV.
2797 o_nonblock (nblock_io.U):
2798 This variable bears the symbol value to be used during open() or fcntl()
2799 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2800 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2801 but that is only supported by some devices.
2804 This is an old synonym for _o.
2806 old_pthread_create_joinable (d_pthrattrj.U):
2807 This variable defines the constant to use for creating joinable
2808 (aka undetached) pthreads. Unused if pthread.h defines
2809 PTHREAD_CREATE_JOINABLE. If used, possible values are
2810 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2812 optimize (ccflags.U):
2813 This variable contains any optimizer/debugger flag that should be used.
2814 It is up to the Makefile to use it.
2816 orderlib (orderlib.U):
2817 This variable is "true" if the components of libraries must be ordered
2818 (with `lorder $* | tsort`) before placing them in an archive. Set to
2819 "false" if ranlib or ar can generate random libraries.
2821 osname (Oldconfig.U):
2822 This variable contains the operating system name (e.g. sunos,
2823 solaris, hpux, etc.). It can be useful later on for setting
2824 defaults. Any spaces are replaced with underscores. It is set
2825 to a null string if we can't figure it out.
2827 osvers (Oldconfig.U):
2828 This variable contains the operating system version (e.g.
2829 4.1.3, 5.2, etc.). It is primarily used for helping select
2830 an appropriate hints file, but might be useful elsewhere for
2831 setting defaults. It is set to '' if we can't figure it out.
2832 We try to be flexible about how much of the version number
2833 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2834 same for this package, hints files might just be os_4.0 or
2835 os_4.1, etc., not keeping separate files for each little release.
2837 otherlibdirs (otherlibdirs.U):
2838 This variable contains a colon-separated set of paths for the perl
2839 binary to search for additional library files or modules.
2840 These directories will be tacked to the end of @INC.
2841 Perl will automatically search below each path for version-
2842 and architecture-specific directories. See inc_version_list
2844 A value of ' ' means 'none' and is used to preserve this value
2845 for the next run through Configure.
2847 package (package.U):
2848 This variable contains the name of the package being constructed.
2849 It is primarily intended for the use of later Configure units.
2852 This variable contains the name of the preferred pager on the system.
2853 Usual values are (the full pathnames of) more, less, pg, or cat.
2856 This variable contains a command that produces the text of the
2857 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2858 "ypcat passwd" when NIS is used.
2859 On some systems, such as os390, there may be no equivalent
2860 command, in which case this variable is unset.
2862 patchlevel (patchlevel.U):
2863 The patchlevel level of this package.
2864 The value of patchlevel comes from the patchlevel.h file.
2865 In a version number such as 5.6.1, this is the "6".
2866 In patchlevel.h, this is referred to as "PERL_VERSION".
2869 This is an old synonym for p_ in Head.U, the character
2870 used to separate elements in the command shell search PATH.
2873 This variable contains the full path (if any) to a previously
2874 installed perl5.005 or later suitable for running the script
2875 to determine inc_version_list.
2878 This variable is defined but not used by Configure.
2879 The value is a plain '' and is not useful.
2881 PERL_REVISION (Oldsyms.U):
2882 In a Perl version number such as 5.6.2, this is the 5.
2883 This value is manually set in patchlevel.h
2885 PERL_SUBVERSION (Oldsyms.U):
2886 In a Perl version number such as 5.6.2, this is the 2.
2887 Values greater than 50 represent potentially unstable
2888 development subversions.
2889 This value is manually set in patchlevel.h
2891 PERL_VERSION (Oldsyms.U):
2892 In a Perl version number such as 5.6.2, this is the 6.
2893 This value is manually set in patchlevel.h
2895 perladmin (perladmin.U):
2896 Electronic mail address of the perl5 administrator.
2899 The list of libraries needed by Perl only (any libraries needed
2900 by extensions only will by dropped, if using dynamic loading).
2902 perlpath (perlpath.U):
2903 This variable contains the eventual value of the PERLPATH symbol,
2904 which contains the name of the perl interpreter to be used in
2905 shell scripts and in the "eval 'exec'" idiom.
2908 This variable is used internally by Configure to determine the
2909 full pathname (if any) of the pg program. After Configure runs,
2910 the value is reset to a plain "pg" and is not useful.
2912 phostname (myhostname.U):
2913 This variable contains the eventual value of the PHOSTNAME symbol,
2914 which is a command that can be fed to popen() to get the host name.
2915 The program should probably not presume that the domain is or isn't
2918 pidtype (pidtype.U):
2919 This variable defines PIDTYPE to be something like pid_t, int,
2920 ushort, or whatever type is used to declare process ids in the kernel.
2923 Holds the private path used by Configure to find out the libraries.
2924 Its value is prepend to libpth. This variable takes care of special
2925 machines, like the mips. Usually, it should be empty.
2927 pm_apiversion (xs_apiversion.U):
2928 This variable contains the version of the oldest perl
2929 compatible with the present perl. (That is, pure perl modules
2930 written for $pm_apiversion will still work for the current
2931 version). perl.c:incpush() and lib/lib.pm will automatically
2932 search in $sitelib for older directories across major versions
2933 back to pm_apiversion. This is only useful if you have a perl
2934 library directory tree structured like the default one. The
2935 versioned site_perl library was introduced in 5.005, so that's
2936 the default setting for this variable. It's hard to imagine
2937 it changing before Perl6. It is included here for symmetry
2938 with xs_apiveprsion -- the searching algorithms will
2939 (presumably) be similar.
2940 See the INSTALL file for how this works.
2943 This variable is defined but not used by Configure.
2944 The value is a plain '' and is not useful.
2947 This variable is defined but not used by Configure.
2948 The value is a plain '' and is not useful.
2951 This variable holds the name of the directory below which the
2952 user will install the package. Usually, this is /usr/local, and
2953 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2954 man pages in /usr/local/man, etc. It is only used to set defaults
2955 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2957 prefixexp (prefix.U):
2958 This variable holds the full absolute path of the directory below
2959 which the user will install the package. Derived from prefix.
2961 privlib (privlib.U):
2962 This variable contains the eventual value of the PRIVLIB symbol,
2963 which is the name of the private library for this package. It may
2964 have a ~ on the front. It is up to the makefile to eventually create
2965 this directory while performing installation (with ~ substitution).
2967 privlibexp (privlib.U):
2968 This variable is the ~name expanded version of privlib, so that you
2969 may use it directly in Makefiles or shell scripts.
2971 prototype (prototype.U):
2972 This variable holds the eventual value of CAN_PROTOTYPE, which
2973 indicates the C compiler can handle funciton prototypes.
2975 ptrsize (ptrsize.U):
2976 This variable contains the value of the PTRSIZE symbol, which
2977 indicates to the C program how many bytes there are in a pointer.
2979 quadkind (quadtype.U):
2980 This variable, if defined, encodes the type of a quad:
2981 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2983 quadtype (quadtype.U):
2984 This variable defines Quad_t to be something like long, int,
2985 long long, int64_t, or whatever type is used for 64-bit integers.
2987 randbits (randfunc.U):
2988 Indicates how many bits are produced by the function used to
2989 generate normalized random numbers.
2991 randfunc (randfunc.U):
2992 Indicates the name of the random number function to use.
2993 Values include drand48, random, and rand. In C programs,
2994 the 'Drand01' macro is defined to generate uniformly distributed
2995 random numbers over the range [0., 1.[ (see drand01 and nrand).
2997 randseedtype (randfunc.U):
2998 Indicates the type of the argument of the seedfunc.
3000 ranlib (orderlib.U):
3001 This variable is set to the pathname of the ranlib program, if it is
3002 needed to generate random libraries. Set to ":" if ar can generate
3003 random libraries or if random libraries are not supported
3005 rd_nodata (nblock_io.U):
3006 This variable holds the return code from read() when no data is
3007 present. It should be -1, but some systems return 0 when O_NDELAY is
3008 used, which is a shame because you cannot make the difference between
3009 no data and an EOF.. Sigh!
3011 revision (patchlevel.U):
3012 The value of revision comes from the patchlevel.h file.
3013 In a version number such as 5.6.1, this is the "5".
3014 In patchlevel.h, this is referred to as "PERL_REVISION".
3017 This variable is used internally by Configure to determine the
3018 full pathname (if any) of the rm program. After Configure runs,
3019 the value is reset to a plain "rm" and is not useful.
3022 This variable is defined but not used by Configure.
3023 The value is a plain '' and is not useful.
3026 This variable contains 'true' or 'false' depending whether the
3027 nm extraction should be performed or not, according to the value
3028 of usenm and the flags on the Configure command line.
3030 sched_yield (d_pthread_y.U):
3031 This variable defines the way to yield the execution
3032 of the current thread.
3034 scriptdir (scriptdir.U):
3035 This variable holds the name of the directory in which the user wants
3036 to put publicly scripts for the package in question. It is either
3037 the same directory as for binaries, or a special one that can be
3038 mounted across different architectures, like /usr/share. Programs
3039 must be prepared to deal with ~name expansion.
3041 scriptdirexp (scriptdir.U):
3042 This variable is the same as scriptdir, but is filename expanded
3043 at configuration time, for programs not wanting to bother with it.
3046 This variable is used internally by Configure to determine the
3047 full pathname (if any) of the sed program. After Configure runs,
3048 the value is reset to a plain "sed" and is not useful.
3050 seedfunc (randfunc.U):
3051 Indicates the random number generating seed function.
3052 Values include srand48, srandom, and srand.
3054 selectminbits (selectminbits.U):
3055 This variable holds the minimum number of bits operated by select.
3056 That is, if you do select(n, ...), how many bits at least will be
3057 cleared in the masks if some activity is detected. Usually this
3058 is either n or 32*ceil(n/32), especially many little-endians do
3059 the latter. This is only useful if you have select(), naturally.
3061 selecttype (selecttype.U):
3062 This variable holds the type used for the 2nd, 3rd, and 4th
3063 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3064 is defined, and 'int *' otherwise. This is only useful if you
3065 have select(), naturally.
3068 This variable is defined but not used by Configure.
3069 The value is a plain '' and is not useful.
3072 This variable contains the full pathname of the shell used
3073 on this system to execute Bourne shell scripts. Usually, this will be
3074 /bin/sh, though it's possible that some systems will have /bin/ksh,
3075 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3077 This unit comes before Options.U, so you can't set sh with a '-D'
3078 option, though you can override this (and startsh)
3079 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3082 This variable is defined but not used by Configure.
3083 The value is a plain '' and is not useful.
3085 sharpbang (spitshell.U):
3086 This variable contains the string #! if this system supports that
3089 shmattype (d_shmat.U):
3090 This symbol contains the type of pointer returned by shmat().
3091 It can be 'void *' or 'char *'.
3093 shortsize (intsize.U):
3094 This variable contains the value of the SHORTSIZE symbol which
3095 indicates to the C program how many bytes there are in a short.
3097 shrpenv (libperl.U):
3098 If the user builds a shared libperl.so, then we need to tell the
3099 'perl' executable where it will be able to find the installed libperl.so.
3100 One way to do this on some systems is to set the environment variable
3101 LD_RUN_PATH to the directory that will be the final location of the
3102 shared libperl.so. The makefile can use this with something like
3103 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3105 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3108 See the main perl Makefile.SH for actual working usage.
3109 Alternatively, we might be able to use a command line option such
3110 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3111 $archlibexp/CORE (Linux).
3113 shsharp (spitshell.U):
3114 This variable tells further Configure units whether your sh can
3117 sig_count (sig_name.U):
3118 This variable holds a number larger than the largest valid
3119 signal number. This is usually the same as the NSIG macro.
3121 sig_name (sig_name.U):
3122 This variable holds the signal names, space separated. The leading
3123 SIG in signal name is removed. A ZERO is prepended to the
3124 list. This is currently not used.
3126 sig_name_init (sig_name.U):
3127 This variable holds the signal names, enclosed in double quotes and
3128 separated by commas, suitable for use in the SIG_NAME definition
3129 below. A "ZERO" is prepended to the list, and the list is
3130 terminated with a plain 0. The leading SIG in signal names
3131 is removed. See sig_num.
3133 sig_num (sig_name.U):
3134 This variable holds the signal numbers, space separated. A ZERO is
3135 prepended to the list (corresponding to the fake SIGZERO), and
3136 the list is terminated with a 0. Those numbers correspond to
3137 the value of the signal listed in the same place within the
3140 sig_num_init (sig_name.U):
3141 This variable holds the signal numbers, enclosed in double quotes and
3142 separated by commas, suitable for use in the SIG_NUM definition
3143 below. A "ZERO" is prepended to the list, and the list is
3144 terminated with a plain 0.
3146 signal_t (d_voidsig.U):
3147 This variable holds the type of the signal handler (void or int).
3149 sitearch (sitearch.U):
3150 This variable contains the eventual value of the SITEARCH symbol,
3151 which is the name of the private library for this package. It may
3152 have a ~ on the front. It is up to the makefile to eventually create
3153 this directory while performing installation (with ~ substitution).
3154 The standard distribution will put nothing in this directory.
3155 After perl has been installed, users may install their own local
3156 architecture-dependent modules in this directory with
3157 MakeMaker Makefile.PL
3158 or equivalent. See INSTALL for details.
3160 sitearchexp (sitearch.U):
3161 This variable is the ~name expanded version of sitearch, so that you
3162 may use it directly in Makefiles or shell scripts.
3164 sitebin (sitebin.U):
3165 This variable holds the name of the directory in which the user wants
3166 to put add-on publicly executable files for the package in question. It
3167 is most often a local directory such as /usr/local/bin. Programs using
3168 this variable must be prepared to deal with ~name substitution.
3169 The standard distribution will put nothing in this directory.
3170 After perl has been installed, users may install their own local
3171 executables in this directory with
3172 MakeMaker Makefile.PL
3173 or equivalent. See INSTALL for details.
3175 sitebinexp (sitebin.U):
3176 This is the same as the sitebin variable, but is filename expanded at
3177 configuration time, for use in your makefiles.
3179 sitelib (sitelib.U):
3180 This variable contains the eventual value of the SITELIB symbol,
3181 which is the name of the private library for this package. It may
3182 have a ~ on the front. It is up to the makefile to eventually create
3183 this directory while performing installation (with ~ substitution).
3184 The standard distribution will put nothing in this directory.
3185 After perl has been installed, users may install their own local
3186 architecture-independent modules in this directory with
3187 MakeMaker Makefile.PL
3188 or equivalent. See INSTALL for details.
3190 sitelib_stem (sitelib.U):
3191 This variable is $sitelibexp with any trailing version-specific component
3192 removed. The elements in inc_version_list (inc_version_list.U) can
3193 be tacked onto this variable to generate a list of directories to search.
3195 sitelibexp (sitelib.U):
3196 This variable is the ~name expanded version of sitelib, so that you
3197 may use it directly in Makefiles or shell scripts.
3199 siteprefix (siteprefix.U):
3200 This variable holds the full absolute path of the directory below
3201 which the user will install add-on packages.
3202 See INSTALL for usage and examples.
3204 siteprefixexp (siteprefix.U):
3205 This variable holds the full absolute path of the directory below
3206 which the user will install add-on packages. Derived from siteprefix.
3208 sizesize (sizesize.U):
3209 This variable contains the size of a sizetype in bytes.
3211 sizetype (sizetype.U):
3212 This variable defines sizetype to be something like size_t,
3213 unsigned long, or whatever type is used to declare length
3214 parameters for string functions.
3217 This variable is defined but not used by Configure.
3218 The value is a plain '' and is not useful.
3221 This variable is defined but not used by Configure.
3222 The value is a plain '' and is not useful.
3225 This variable holds the extension used to identify shared libraries
3226 (also known as shared objects) on the system. Usually set to 'so'.
3228 sockethdr (d_socket.U):
3229 This variable has any cpp '-I' flags needed for socket support.
3231 socketlib (d_socket.U):
3232 This variable has the names of any libraries needed for socket support.
3234 socksizetype (socksizetype.U):
3235 This variable holds the type used for the size argument
3236 for various socket calls like accept. Usual values include
3237 socklen_t, size_t, and int.
3240 This variable is used internally by Configure to determine the
3241 full pathname (if any) of the sort program. After Configure runs,
3242 the value is reset to a plain "sort" and is not useful.
3244 spackage (package.U):
3245 This variable contains the name of the package being constructed,
3246 with the first letter uppercased, i.e. suitable for starting
3249 spitshell (spitshell.U):
3250 This variable contains the command necessary to spit out a runnable
3251 shell on this system. It is either cat or a grep '-v' for # comments.
3253 sPRId64 (quadfio.U):
3254 This variable, if defined, contains the string used by stdio to
3255 format 64-bit decimal numbers (format 'd') for output.
3257 sPRIeldbl (longdblfio.U):
3258 This variable, if defined, contains the string used by stdio to
3259 format long doubles (format 'e') for output.
3261 sPRIEUldbl (longdblfio.U):
3262 This variable, if defined, contains the string used by stdio to
3263 format long doubles (format 'E') for output.
3264 The 'U' in the name is to separate this from sPRIeldbl so that even
3265 case-blind systems can see the difference.
3267 sPRIfldbl (longdblfio.U):
3268 This variable, if defined, contains the string used by stdio to
3269 format long doubles (format 'f') for output.
3271 sPRIFUldbl (longdblfio.U):
3272 This variable, if defined, contains the string used by stdio to
3273 format long doubles (format 'F') for output.
3274 The 'U' in the name is to separate this from sPRIfldbl so that even
3275 case-blind systems can see the difference.
3277 sPRIgldbl (longdblfio.U):
3278 This variable, if defined, contains the string used by stdio to
3279 format long doubles (format 'g') for output.
3281 sPRIGUldbl (longdblfio.U):
3282 This variable, if defined, contains the string used by stdio to
3283 format long doubles (format 'G') for output.
3284 The 'U' in the name is to separate this from sPRIgldbl so that even
3285 case-blind systems can see the difference.
3287 sPRIi64 (quadfio.U):
3288 This variable, if defined, contains the string used by stdio to
3289 format 64-bit decimal numbers (format 'i') for output.
3291 sPRIo64 (quadfio.U):
3292 This variable, if defined, contains the string used by stdio to
3293 format 64-bit octal numbers (format 'o') for output.
3295 sPRIu64 (quadfio.U):
3296 This variable, if defined, contains the string used by stdio to
3297 format 64-bit unsigned decimal numbers (format 'u') for output.
3299 sPRIx64 (quadfio.U):
3300 This variable, if defined, contains the string used by stdio to
3301 format 64-bit hexadecimal numbers (format 'x') for output.
3303 sPRIXU64 (quadfio.U):
3304 This variable, if defined, contains the string used by stdio to
3305 format 64-bit hExADECimAl numbers (format 'X') for output.
3306 The 'U' in the name is to separate this from sPRIx64 so that even
3307 case-blind systems can see the difference.
3310 This variable holds the path to the package source. It is up to
3311 the Makefile to use this variable and set VPATH accordingly to
3312 find the sources remotely.
3314 sSCNfldbl (longdblfio.U):
3315 This variable, if defined, contains the string used by stdio to
3316 format long doubles (format 'f') for input.
3318 ssizetype (ssizetype.U):
3319 This variable defines ssizetype to be something like ssize_t,
3320 long or int. It is used by functions that return a count
3321 of bytes or an error condition. It must be a signed type.
3322 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3324 startperl (startperl.U):
3325 This variable contains the string to put on the front of a perl
3326 script to make sure (hopefully) that it runs with perl and not some
3327 shell. Of course, that leading line must be followed by the classical
3329 eval 'exec perl -S $0 ${1+"$@"}'
3330 if $running_under_some_shell;
3331 to guarantee perl startup should the shell execute the script. Note
3332 that this magic incatation is not understood by csh.
3334 startsh (startsh.U):
3335 This variable contains the string to put on the front of a shell
3336 script to make sure (hopefully) that it runs with sh and not some
3339 static_ext (Extensions.U):
3340 This variable holds a list of XS extension files we want to
3341 link statically into the package. It is used by Makefile.
3343 stdchar (stdchar.U):
3344 This variable conditionally defines STDCHAR to be the type of char
3345 used in stdio.h. It has the values "unsigned char" or "char".
3347 stdio_base (d_stdstdio.U):
3348 This variable defines how, given a FILE pointer, fp, to access the
3349 _base field (or equivalent) of stdio.h's FILE structure. This will
3350 be used to define the macro FILE_base(fp).
3352 stdio_bufsiz (d_stdstdio.U):
3353 This variable defines how, given a FILE pointer, fp, to determine
3354 the number of bytes store in the I/O buffer pointer to by the
3355 _base field (or equivalent) of stdio.h's FILE structure. This will
3356 be used to define the macro FILE_bufsiz(fp).
3358 stdio_cnt (d_stdstdio.U):
3359 This variable defines how, given a FILE pointer, fp, to access the
3360 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3361 be used to define the macro FILE_cnt(fp).
3363 stdio_filbuf (d_stdstdio.U):
3364 This variable defines how, given a FILE pointer, fp, to tell
3365 stdio to refill it's internal buffers (?). This will
3366 be used to define the macro FILE_filbuf(fp).
3368 stdio_ptr (d_stdstdio.U):
3369 This variable defines how, given a FILE pointer, fp, to access the
3370 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3371 be used to define the macro FILE_ptr(fp).
3373 stdio_stream_array (stdio_streams.U):
3374 This variable tells the name of the array holding the stdio streams.
3375 Usual values include _iob, __iob, and __sF.
3377 strings (i_string.U):
3378 This variable holds the full path of the string header that will be
3379 used. Typically /usr/include/string.h or /usr/include/strings.h.
3382 This variable is defined but not used by Configure.
3383 The value is a plain '' and is not useful.
3385 subversion (patchlevel.U):
3386 The subversion level of this package.
3387 The value of subversion comes from the patchlevel.h file.
3388 In a version number such as 5.6.1, this is the "1".
3389 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3390 This is unique to perl.
3393 This variable holds the place where the manual is located on this
3394 system. It is not the place where the user wants to put his manual
3395 pages. Rather it is the place where Configure may look to find manual
3396 for unix commands (section 1 of the manual usually). See mansrc.
3399 This variable is defined but not used by Configure.
3400 The value is a plain '' and is not useful.
3403 This variable is defined but not used by Configure.
3404 The value is a plain '' and is not useful.
3407 This variable is defined but not used by Configure.
3408 The value is a plain '' and is not useful.
3411 This variable is defined but not used by Configure.
3412 The value is a plain '' and is not useful.
3415 This variable is used internally by Configure to determine the
3416 full pathname (if any) of the test program. After Configure runs,
3417 the value is reset to a plain "test" and is not useful.
3419 timeincl (i_time.U):
3420 This variable holds the full path of the included time header(s).
3422 timetype (d_time.U):
3423 This variable holds the type returned by time(). It can be long,
3424 or time_t on BSD sites (in which case <sys/types.h> should be
3425 included). Anyway, the type Time_t should be used.
3428 This variable is used internally by Configure to determine the
3429 full pathname (if any) of the touch program. After Configure runs,
3430 the value is reset to a plain "touch" and is not useful.
3433 This variable is used internally by Configure to determine the
3434 full pathname (if any) of the tr program. After Configure runs,
3435 the value is reset to a plain "tr" and is not useful.
3438 This variable contains the value to be passed to the tr(1)
3439 command to transliterate a newline. Typical values are
3440 '\012' and '\n'. This is needed for EBCDIC systems where
3441 newline is not necessarily '\012'.
3444 This variable is defined but not used by Configure.
3445 The value is a plain '' and is not useful.
3448 This variable is the size of an U16 in bytes.
3451 This variable contains the C type used for Perl's U16.
3454 This variable is the size of an U32 in bytes.
3457 This variable contains the C type used for Perl's U32.
3460 This variable is the size of an U64 in bytes.
3463 This variable contains the C type used for Perl's U64.
3466 This variable is the size of an U8 in bytes.
3469 This variable contains the C type used for Perl's U8.
3472 This variable contains the format string used for printing a Uid_t.
3474 uidsign (uidsign.U):
3475 This variable contains the signedness of a uidtype.
3476 1 for unsigned, -1 for signed.
3478 uidsize (uidsize.U):
3479 This variable contains the size of a uidtype in bytes.
3481 uidtype (uidtype.U):
3482 This variable defines Uid_t to be something like uid_t, int,
3483 ushort, or whatever type is used to declare user ids in the kernel.
3486 This variable is used internally by Configure to determine the
3487 full pathname (if any) of the uname program. After Configure runs,
3488 the value is reset to a plain "uname" and is not useful.
3491 This variable is used internally by Configure to determine the
3492 full pathname (if any) of the uniq program. After Configure runs,
3493 the value is reset to a plain "uniq" and is not useful.
3495 uquadtype (quadtype.U):
3496 This variable defines Uquad_t to be something like unsigned long,
3497 unsigned int, unsigned long long, uint64_t, or whatever type is
3498 used for 64-bit integers.
3500 use5005threads (usethreads.U):
3501 This variable conditionally defines the USE_5005THREADS symbol,
3502 and indicates that Perl should be built to use the 5.005-based
3503 threading implementation.
3505 use64bitall (use64bits.U):
3506 This variable conditionally defines the USE_64_BIT_ALL symbol,
3507 and indicates that 64-bit integer types should be used
3508 when available. The maximal possible
3509 64-bitness is employed: LP64 or ILP64, meaning that you will
3510 be able to use more than 2 gigabytes of memory. This mode is
3511 even more binary incompatible than USE_64_BIT_INT. You may not
3512 be able to run the resulting executable in a 32-bit CPU at all or
3513 you may need at least to reboot your OS to 64-bit mode.
3515 use64bitint (use64bits.U):
3516 This variable conditionally defines the USE_64_BIT_INT symbol,
3517 and indicates that 64-bit integer types should be used
3518 when available. The minimal possible 64-bitness
3519 is employed, just enough to get 64-bit integers into Perl.
3520 This may mean using for example "long longs", while your memory
3521 may still be limited to 2 gigabytes.
3524 This variable indicates if the system supports dynamic
3525 loading of some sort. See also dlsrc and dlobj.
3527 useithreads (usethreads.U):
3528 This variable conditionally defines the USE_ITHREADS symbol,
3529 and indicates that Perl should be built to use the interpreter-based
3530 threading implementation.
3532 uselargefiles (uselfs.U):
3533 This variable conditionally defines the USE_LARGE_FILES symbol,
3534 and indicates that large file interfaces should be used when
3537 uselongdouble (uselongdbl.U):
3538 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3539 and indicates that long doubles should be used when available.
3541 usemorebits (usemorebits.U):
3542 This variable conditionally defines the USE_MORE_BITS symbol,
3543 and indicates that explicit 64-bit interfaces and long doubles
3544 should be used when available.
3546 usemultiplicity (usemultiplicity.U):
3547 This variable conditionally defines the MULTIPLICITY symbol,
3548 and indicates that Perl should be built to use multiplicity.
3550 usemymalloc (mallocsrc.U):
3551 This variable contains y if the malloc that comes with this package
3552 is desired over the system's version of malloc. People often include
3553 special versions of malloc for effiency, but such versions are often
3554 less portable. See also mallocsrc and mallocobj.
3555 If this is 'y', then -lmalloc is removed from $libs.
3558 This variable contains 'true' or 'false' depending whether the
3559 nm extraction is wanted or not.
3561 useopcode (Extensions.U):
3562 This variable holds either 'true' or 'false' to indicate
3563 whether the Opcode extension should be used. The sole
3564 use for this currently is to allow an easy mechanism
3565 for users to skip the Opcode extension from the Configure
3568 useperlio (useperlio.U):
3569 This variable conditionally defines the USE_PERLIO symbol,
3570 and indicates that the PerlIO abstraction should be
3573 useposix (Extensions.U):
3574 This variable holds either 'true' or 'false' to indicate
3575 whether the POSIX extension should be used. The sole
3576 use for this currently is to allow an easy mechanism
3577 for hints files to indicate that POSIX will not compile
3578 on a particular system.
3581 This variable is set to true when the user agrees to use sfio.
3582 It is set to false when sfio is not available or when the user
3583 explicitely requests not to use sfio. It is here primarily so
3584 that command-line settings can override the auto-detection of
3585 d_sfio without running into a "WHOA THERE".
3587 useshrplib (libperl.U):
3588 This variable is set to 'yes' if the user wishes
3589 to build a shared libperl, and 'no' otherwise.
3591 usesocks (usesocks.U):
3592 This variable conditionally defines the USE_SOCKS symbol,
3593 and indicates that Perl should be built to use SOCKS.
3595 usethreads (usethreads.U):
3596 This variable conditionally defines the USE_THREADS symbol,
3597 and indicates that Perl should be built to use threads.
3599 usevendorprefix (vendorprefix.U):
3600 This variable tells whether the vendorprefix
3601 and consequently other vendor* paths are in use.
3603 usevfork (d_vfork.U):
3604 This variable is set to true when the user accepts to use vfork.
3605 It is set to false when no vfork is available or when the user
3606 explicitely requests not to use vfork.
3609 This variable holds the path of the include files, which is
3610 usually /usr/include. It is mainly used by other Configure units.
3613 This variable is defined but not used by Configure.
3614 The value is a plain '' and is not useful.
3616 uvoformat (perlxvf.U):
3617 This variable contains the format string used for printing
3618 a Perl UV as an unsigned octal integer.
3621 This variable is the size of a UV in bytes.
3624 This variable contains the C type used for Perl's UV.
3626 uvuformat (perlxvf.U):
3627 This variable contains the format string used for printing
3628 a Perl UV as an unsigned decimal integer.
3630 uvxformat (perlxvf.U):
3631 This variable contains the format string used for printing
3632 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3634 uvXUformat (perlxvf.U):
3635 This variable contains the format string used for printing
3636 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3638 vendorarch (vendorarch.U):
3639 This variable contains the value of the PERL_VENDORARCH symbol.
3640 It may have a ~ on the front.
3641 The standard distribution will put nothing in this directory.
3642 Vendors who distribute perl may wish to place their own
3643 architecture-dependent modules and extensions in this directory with
3644 MakeMaker Makefile.PL INSTALLDIRS=vendor
3645 or equivalent. See INSTALL for details.
3647 vendorarchexp (vendorarch.U):
3648 This variable is the ~name expanded version of vendorarch, so that you
3649 may use it directly in Makefiles or shell scripts.
3651 vendorbin (vendorbin.U):
3652 This variable contains the eventual value of the VENDORBIN symbol.
3653 It may have a ~ on the front.
3654 The standard distribution will put nothing in this directory.
3655 Vendors who distribute perl may wish to place additional
3656 binaries in this directory with
3657 MakeMaker Makefile.PL INSTALLDIRS=vendor
3658 or equivalent. See INSTALL for details.
3660 vendorbinexp (vendorbin.U):
3661 This variable is the ~name expanded version of vendorbin, so that you
3662 may use it directly in Makefiles or shell scripts.
3664 vendorlib (vendorlib.U):
3665 This variable contains the eventual value of the VENDORLIB symbol,
3666 which is the name of the private library for this package.
3667 The standard distribution will put nothing in this directory.
3668 Vendors who distribute perl may wish to place their own
3669 modules in this directory with
3670 MakeMaker Makefile.PL INSTALLDIRS=vendor
3671 or equivalent. See INSTALL for details.
3673 vendorlib_stem (vendorlib.U):
3674 This variable is $vendorlibexp with any trailing version-specific component
3675 removed. The elements in inc_version_list (inc_version_list.U) can
3676 be tacked onto this variable to generate a list of directories to search.
3678 vendorlibexp (vendorlib.U):
3679 This variable is the ~name expanded version of vendorlib, so that you
3680 may use it directly in Makefiles or shell scripts.
3682 vendorprefix (vendorprefix.U):
3683 This variable holds the full absolute path of the directory below
3684 which the vendor will install add-on packages.
3685 See INSTALL for usage and examples.
3687 vendorprefixexp (vendorprefix.U):
3688 This variable holds the full absolute path of the directory below
3689 which the vendor will install add-on packages. Derived from vendorprefix.
3691 version (patchlevel.U):
3692 The full version number of this package, such as 5.6.1 (or 5_6_1).
3693 This combines revision, patchlevel, and subversion to get the
3694 full version number, including any possible subversions.
3695 This is suitable for use as a directory name, and hence is
3696 filesystem dependent.
3698 versiononly (versiononly.U):
3699 If set, this symbol indicates that only the version-specific
3700 components of a perl installation should be installed.
3701 This may be useful for making a test installation of a new
3702 version without disturbing the existing installation.
3703 Setting versiononly is equivalent to setting installperl's -v option.
3704 In particular, the non-versioned scripts and programs such as
3705 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
3706 (see INSTALL for a more complete list). Nor are the man
3708 Usually, this is undef.
3711 This variable is defined but not used by Configure.
3712 The value is a plain '' and is not useful.
3714 voidflags (voidflags.U):
3715 This variable contains the eventual value of the VOIDFLAGS symbol,
3716 which indicates how much support of the void type is given by this
3717 compiler. See VOIDFLAGS for more info.
3720 This variable holds extra path (space-separated) used to find
3721 libraries on this platform, for example CPU-specific libraries
3722 (on multi-CPU platforms) may be listed here.
3724 xs_apiversion (xs_apiversion.U):
3725 This variable contains the version of the oldest perl binary
3726 compatible with the present perl. perl.c:incpush() and
3727 lib/lib.pm will automatically search in $sitearch for older
3728 directories across major versions back to xs_apiversion.
3729 This is only useful if you have a perl library directory tree
3730 structured like the default one.
3731 See INSTALL for how this works.
3732 The versioned site_perl directory was introduced in 5.005,
3733 so that is the lowest possible value.
3734 Since this can depend on compile time options (such as
3735 bincompat) it is set by Configure. Other non-default sources
3736 of potential incompatibility, such as multiplicity, threads,
3737 debugging, 64bits, sfio, etc., are not checked for currently,
3738 though in principle we could go snooping around in old
3742 This variable is defined but not used by Configure.
3743 The value is a plain '' and is not useful.
3746 This variable is used internally by Configure to determine the
3747 full pathname (if any) of the zip program. After Configure runs,
3748 the value is reset to a plain "zip" and is not useful.