1 This file contains a description of all the shell variables whose value is
2 determined by the Configure script. Variables intended for use in C
3 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
4 generates pod documentation for Config.pm from this file--please try to keep
5 the formatting regular.]
8 This variable defines the extension used for ordinary libraries.
9 For unix, it is '.a'. The '.' is included. Other possible
10 values include '.lib'.
13 This variable defines the extension used for executable files.
14 For unix it is empty. Other possible values include '.exe'.
17 This variable defines the extension used for object files.
18 For unix, it is '.o'. The '.' is included. Other possible
19 values include '.obj'.
22 This variable is set to 'true' if AFS (Andrew File System) is used
23 on the system, 'false' otherwise. It is possible to override this
24 with a hint value or command line option, but you'd better know
27 alignbytes (alignbytes.U):
28 This variable holds the number of bytes required to align a
29 double-- or a long double when applicable. Usual values are
30 2, 4 and 8. The default is eight, for safety.
32 ansi2knr (ansi2knr.U):
33 This variable is set if the user needs to run ansi2knr.
34 Currently, this is not supported, so we just abort.
36 aphostname (d_gethname.U):
37 This variable contains the command which can be used to compute the
38 host name. The command is fully qualified by its absolute path, to make
39 it safe when used by a process with super-user privileges.
41 api_revision (patchlevel.U):
42 The three variables, api_revision, api_version, and
43 api_subversion, specify the version of the oldest perl binary
44 compatible with the present perl. In a full version string
45 such as '5.6.1', api_revision is the '5'.
46 Prior to 5.5.640, the format was a floating point number,
48 perl.c:incpush() and lib/lib.pm will automatically search in
49 $sitelib/.. for older directories back to the limit specified
50 by these api_ variables. This is only useful if you have a
51 perl library directory tree structured like the default one.
52 See INSTALL for how this works. The versioned site_perl
53 directory was introduced in 5.005, so that is the lowest
54 possible value. The version list appropriate for the current
55 system is determined in inc_version_list.U.
56 XXX To do: Since compatibility can depend on compile time
57 options (such as bincompat, longlong, etc.) it should
58 (perhaps) be set by Configure, but currently it isn't.
59 Currently, we read a hard-wired value from patchlevel.h.
60 Perhaps what we ought to do is take the hard-wired value from
61 patchlevel.h but then modify it if the current Configure
62 options warrant. patchlevel.h then would use an #ifdef guard.
64 api_subversion (patchlevel.U):
65 The three variables, api_revision, api_version, and
66 api_subversion, specify the version of the oldest perl binary
67 compatible with the present perl. In a full version string
68 such as '5.6.1', api_subversion is the '1'. See api_revision for
71 api_version (patchlevel.U):
72 The three variables, api_revision, api_version, and
73 api_subversion, specify the version of the oldest perl binary
74 compatible with the present perl. In a full version string
75 such as '5.6.1', api_version is the '6'. See api_revision for
76 full details. As a special case, 5.5.0 is rendered in the
77 old-style as 5.005. (In the 5.005_0x maintenance series,
78 this was the only versioned directory in $sitelib.)
80 api_versionstring (patchlevel.U):
81 This variable combines api_revision, api_version, and
82 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
83 for use as a directory name. This is filesystem dependent.
86 This variable is used internally by Configure to determine the
87 full pathname (if any) of the ar program. After Configure runs,
88 the value is reset to a plain "ar" and is not useful.
91 This variable holds the name of the directory in which the user wants
92 to put architecture-dependent public library files for $package.
93 It is most often a local directory such as /usr/local/lib.
94 Programs using this variable must be prepared to deal
95 with filename expansion.
97 archlibexp (archlib.U):
98 This variable is the same as the archlib variable, but is
99 filename expanded at configuration time, for convenient use.
101 archname64 (use64bits.U):
102 This variable is used for the 64-bitness part of $archname.
104 archname (archname.U):
105 This variable is a short name to characterize the current
106 architecture. It is used mainly to construct the default archlib.
109 This variable defines any additional objects that must be linked
110 in with the program on this architecture. On unix, it is usually
111 empty. It is typically used to include emulations of unix calls
112 or other facilities. For perl on OS/2, for example, this would
116 This variable is used internally by Configure to determine the
117 full pathname (if any) of the awk program. After Configure runs,
118 the value is reset to a plain "awk" and is not useful.
121 The base revision level of this package, from the .package file.
124 This variable is defined but not used by Configure.
125 The value is a plain '' and is not useful.
128 This variable holds the name of the directory in which the user wants
129 to put publicly executable images for the package in question. It
130 is most often a local directory such as /usr/local/bin. Programs using
131 this variable must be prepared to deal with ~name substitution.
133 bincompat5005 (bincompat5005.U):
134 This variable contains y if this version of Perl should be
135 binary-compatible with Perl 5.005.
138 This is the same as the bin variable, but is filename expanded at
139 configuration time, for use in your makefiles.
142 This variable is defined but not used by Configure.
143 The value is a plain '' and is not useful.
146 This variable is used internally by Configure to determine the
147 full pathname (if any) of the byacc program. After Configure runs,
148 the value is reset to a plain "byacc" and is not useful.
150 byteorder (byteorder.U):
151 This variable holds the byte order. In the following, larger digits
152 indicate more significance. The variable byteorder is either 4321
153 on a big-endian machine, or 1234 on a little-endian, or 87654321
154 on a Cray ... or 3412 with weird order !
157 This variable contains the \c string if that is what causes the echo
158 command to suppress newline. Otherwise it is null. Correct usage is
159 $echo $n "prompt for a question: $c".
161 castflags (d_castneg.U):
162 This variable contains a flag that precise difficulties the
163 compiler has casting odd floating values to unsigned long:
165 1 = couldn't cast < 0
166 2 = couldn't cast >= 0x80000000
167 4 = couldn't cast in argument expression list
170 This variable is used internally by Configure to determine the
171 full pathname (if any) of the cat program. After Configure runs,
172 the value is reset to a plain "cat" and is not useful.
175 This variable holds the name of a command to execute a C compiler which
176 can resolve multiple global references that happen to have the same
177 name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'.
178 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
180 cccdlflags (dlsrc.U):
181 This variable contains any special flags that might need to be
182 passed with 'cc -c' to compile modules to be used to create a shared
183 library that will be used for dynamic loading. For hpux, this
184 should be +z. It is up to the makefile to use it.
187 This variable contains any special flags that might need to be
188 passed to cc to link with a shared library for dynamic loading.
189 It is up to the makefile to use it. For sunos 4.1, it should
193 This variable contains any additional C compiler flags desired by
194 the user. It is up to the Makefile to use this.
196 ccflags_uselargefiles (uselfs.U):
197 This variable contains the compiler flags needed by large file builds
198 and added to ccflags by hints files.
200 ccsymbols (Cppsym.U):
201 The variable contains the symbols defined by the C compiler alone.
202 The symbols defined by cpp or by cc when it calls cpp are not in
203 this list, see cppsymbols and cppccsymbols.
204 The list is a space-separated list of symbol=value tokens.
207 Login name of the person who ran the Configure script and answered the
208 questions. This is used to tag both config.sh and config_h.SH.
210 cf_email (cf_email.U):
211 Electronic mail address of the person who ran Configure. This can be
212 used by units that require the user's e-mail, like MailList.U.
215 Holds the output of the "date" command when the configuration file was
216 produced. This is used to tag both config.sh and config_h.SH.
218 charsize (charsize.U):
219 This variable contains the value of the CHARSIZE symbol, which
220 indicates to the C program how many bytes there are in a character.
223 This variable is defined but not used by Configure.
224 The value is a plain '' and is not useful.
227 This variable is defined but not used by Configure.
228 The value is a plain '' and is not useful.
231 This variable is defined but not used by Configure.
232 The value is a plain '' and is not useful.
234 clocktype (d_times.U):
235 This variable holds the type returned by times(). It can be long,
236 or clock_t on BSD sites (in which case <sys/types.h> should be
240 This variable is used internally by Configure to determine the
241 full pathname (if any) of the comm program. After Configure runs,
242 the value is reset to a plain "comm" and is not useful.
245 This variable is defined but not used by Configure.
246 The value is a plain '' and is not useful.
248 CONFIGDOTSH (Oldsyms.U):
249 This is set to 'true' in config.sh so that a shell script
250 sourcing config.sh can tell if it has been sourced already.
252 contains (contains.U):
253 This variable holds the command to do a grep with a proper return
254 status. On most sane systems it is simply "grep". On insane systems
255 it is a grep followed by a cat followed by a test. This variable
256 is primarily for the use of other Configure units.
259 This variable is used internally by Configure to determine the
260 full pathname (if any) of the cp program. After Configure runs,
261 the value is reset to a plain "cp" and is not useful.
264 This variable is defined but not used by Configure.
265 The value is a plain '' and is not useful.
268 This variable is used internally by Configure to determine the
269 full pathname (if any) of the cpp program. After Configure runs,
270 the value is reset to a plain "cpp" and is not useful.
272 cpp_stuff (cpp_stuff.U):
273 This variable contains an identification of the catenation mechanism
274 used by the C preprocessor.
276 cppccsymbols (Cppsym.U):
277 The variable contains the symbols defined by the C compiler
278 when it calls cpp. The symbols defined by the cc alone or cpp
279 alone are not in this list, see ccsymbols and cppsymbols.
280 The list is a space-separated list of symbol=value tokens.
282 cppflags (ccflags.U):
283 This variable holds the flags that will be passed to the C pre-
284 processor. It is up to the Makefile to use it.
286 cpplast (cppstdin.U):
287 This variable has the same functionality as cppminus, only it applies
288 to cpprun and not cppstdin.
290 cppminus (cppstdin.U):
291 This variable contains the second part of the string which will invoke
292 the C preprocessor on the standard input and produce to standard
293 output. This variable will have the value "-" if cppstdin needs
294 a minus to specify standard input, otherwise the value is "".
297 This variable contains the command which will invoke a C preprocessor
298 on standard input and put the output to stdout. It is guaranteed not
299 to be a wrapper and may be a null string if no preprocessor can be
300 made directly available. This preprocessor might be different from the
301 one used by the C compiler. Don't forget to append cpplast after the
302 preprocessor options.
304 cppstdin (cppstdin.U):
305 This variable contains the command which will invoke the C
306 preprocessor on standard input and put the output to stdout.
307 It is primarily used by other Configure units that ask about
308 preprocessor symbols.
310 cppsymbols (Cppsym.U):
311 The variable contains the symbols defined by the C preprocessor
312 alone. The symbols defined by cc or by cc when it calls cpp are
313 not in this list, see ccsymbols and cppccsymbols.
314 The list is a space-separated list of symbol=value tokens.
316 crosscompile (crosscompile.U):
317 This variable conditionally defines the CROSSCOMPILE symbol
318 which signifies that the build process is be a cross-compilation.
319 This is normally set by hints files or from Configure command line.
321 cryptlib (d_crypt.U):
322 This variable holds -lcrypt or the path to a libcrypt.a archive if
323 the crypt() function is not defined in the standard C library. It is
324 up to the Makefile to use this.
327 This variable is used internally by Configure to determine the
328 full pathname (if any) of the csh program. After Configure runs,
329 the value is reset to a plain "csh" and is not useful.
331 d_access (d_access.U):
332 This variable conditionally defines HAS_ACCESS if the access() system
333 call is available to check for access permissions using real IDs.
335 d_accessx (d_accessx.U):
336 This variable conditionally defines the HAS_ACCESSX symbol, which
337 indicates to the C program that the accessx() routine is available.
340 This variable conditionally defines the HAS_ALARM symbol, which
341 indicates to the C program that the alarm() routine is available.
343 d_archlib (archlib.U):
344 This variable conditionally defines ARCHLIB to hold the pathname
345 of architecture-dependent library files for $package. If
346 $archlib is the same as $privlib, then this is set to undef.
349 This variable conditionally defines the HAS_ATOLF symbol, which
350 indicates to the C program that the atolf() routine is available.
353 This variable conditionally defines the HAS_ATOLL symbol, which
354 indicates to the C program that the atoll() routine is available.
356 d_attribut (d_attribut.U):
357 This variable conditionally defines HASATTRIBUTE, which
358 indicates the C compiler can check for function attributes,
359 such as printf formats.
362 This variable conditionally defines the HAS_BCMP symbol if
363 the bcmp() routine is available to compare strings.
366 This variable conditionally defines the HAS_BCOPY symbol if
367 the bcopy() routine is available to copy strings.
369 d_bincompat5005 (bincompat5005.U):
370 This variable conditionally defines BINCOMPAT5005 so that embed.h
371 can take special action if this version of Perl should be
372 binary-compatible with Perl 5.005. This is impossible for builds
373 that use features like threads and multiplicity it is always $undef
377 This symbol conditionally defines the symbol BSD when running on a
380 d_bsdgetpgrp (d_getpgrp.U):
381 This variable conditionally defines USE_BSD_GETPGRP if
382 getpgrp needs one arguments whereas USG one needs none.
384 d_bsdsetpgrp (d_setpgrp.U):
385 This variable conditionally defines USE_BSD_SETPGRP if
386 setpgrp needs two arguments whereas USG one needs none.
387 See also d_setpgid for a POSIX interface.
390 This variable conditionally defines the HAS_BZERO symbol if
391 the bzero() routine is available to set memory to 0.
393 d_casti32 (d_casti32.U):
394 This variable conditionally defines CASTI32, which indicates
395 whether the C compiler can cast large floats to 32-bit ints.
397 d_castneg (d_castneg.U):
398 This variable conditionally defines CASTNEG, which indicates
399 wether the C compiler can cast negative float to unsigned.
401 d_charvspr (d_vprintf.U):
402 This variable conditionally defines CHARVSPRINTF if this system
403 has vsprintf returning type (char*). The trend seems to be to
404 declare it as "int vsprintf()".
407 This variable conditionally defines the HAS_CHOWN symbol, which
408 indicates to the C program that the chown() routine is available.
410 d_chroot (d_chroot.U):
411 This variable conditionally defines the HAS_CHROOT symbol, which
412 indicates to the C program that the chroot() routine is available.
414 d_chsize (d_chsize.U):
415 This variable conditionally defines the CHSIZE symbol, which
416 indicates to the C program that the chsize() routine is available
417 to truncate files. You might need a -lx to get this routine.
419 d_closedir (d_closedir.U):
420 This variable conditionally defines HAS_CLOSEDIR if closedir() is
424 This variable conditionally defines the HASCONST symbol, which
425 indicates to the C program that this C compiler knows about the
429 This variable conditionally defines the CRYPT symbol, which
430 indicates to the C program that the crypt() routine is available
431 to encrypt passwords and the like.
434 This variable conditionally defines the CSH symbol, which
435 indicates to the C program that the C-shell exists.
437 d_cuserid (d_cuserid.U):
438 This variable conditionally defines the HAS_CUSERID symbol, which
439 indicates to the C program that the cuserid() routine is available
440 to get character login names.
442 d_dbl_dig (d_dbl_dig.U):
443 This variable conditionally defines d_dbl_dig if this system's
444 header files provide DBL_DIG, which is the number of significant
445 digits in a double precision number.
447 d_difftime (d_difftime.U):
448 This variable conditionally defines the HAS_DIFFTIME symbol, which
449 indicates to the C program that the difftime() routine is available.
451 d_dirnamlen (i_dirent.U):
452 This variable conditionally defines DIRNAMLEN, which indicates
453 to the C program that the length of directory entry names is
454 provided by a d_namelen field.
456 d_dlerror (d_dlerror.U):
457 This variable conditionally defines the HAS_DLERROR symbol, which
458 indicates to the C program that the dlerror() routine is available.
460 d_dlopen (d_dlopen.U):
461 This variable conditionally defines the HAS_DLOPEN symbol, which
462 indicates to the C program that the dlopen() routine is available.
464 d_dlsymun (d_dlsymun.U):
465 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
466 indicates that we need to prepend an underscore to the symbol
467 name before calling dlsym().
469 d_dosuid (d_dosuid.U):
470 This variable conditionally defines the symbol DOSUID, which
471 tells the C program that it should insert setuid emulation code
472 on hosts which have setuid #! scripts disabled.
474 d_drand48proto (d_drand48proto.U):
475 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
476 which indicates to the C program that the system provides
477 a prototype for the drand48() function. Otherwise, it is
478 up to the program to supply one.
481 This variable conditionally defines HAS_DUP2 if dup2() is
482 available to duplicate file descriptors.
484 d_eaccess (d_eaccess.U):
485 This variable conditionally defines the HAS_EACCESS symbol, which
486 indicates to the C program that the eaccess() routine is available.
488 d_endgrent (d_endgrent.U):
489 This variable conditionally defines the HAS_ENDGRENT symbol, which
490 indicates to the C program that the endgrent() routine is available
491 for sequential access of the group database.
493 d_endhent (d_endhent.U):
494 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
495 available to close whatever was being used for host queries.
497 d_endnent (d_endnent.U):
498 This variable conditionally defines HAS_ENDNETENT if endnetent() is
499 available to close whatever was being used for network queries.
501 d_endpent (d_endpent.U):
502 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
503 available to close whatever was being used for protocol queries.
505 d_endpwent (d_endpwent.U):
506 This variable conditionally defines the HAS_ENDPWENT symbol, which
507 indicates to the C program that the endpwent() routine is available
508 for sequential access of the passwd database.
510 d_endsent (d_endsent.U):
511 This variable conditionally defines HAS_ENDSERVENT if endservent() is
512 available to close whatever was being used for service queries.
514 d_eofnblk (nblock_io.U):
515 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
516 when reading from a non-blocking I/O source.
519 This variable conditionally defines the symbols EUNICE and VAX, which
520 alerts the C program that it must deal with ideosyncracies of VMS.
522 d_fchmod (d_fchmod.U):
523 This variable conditionally defines the HAS_FCHMOD symbol, which
524 indicates to the C program that the fchmod() routine is available
525 to change mode of opened files.
527 d_fchown (d_fchown.U):
528 This variable conditionally defines the HAS_FCHOWN symbol, which
529 indicates to the C program that the fchown() routine is available
530 to change ownership of opened files.
533 This variable conditionally defines the HAS_FCNTL symbol, and indicates
534 whether the fcntl() function exists
536 d_fd_macros (d_fd_set.U):
537 This variable contains the eventual value of the HAS_FD_MACROS symbol,
538 which indicates if your C compiler knows about the macros which
539 manipulate an fd_set.
541 d_fd_set (d_fd_set.U):
542 This variable contains the eventual value of the HAS_FD_SET symbol,
543 which indicates if your C compiler knows about the fd_set typedef.
545 d_fds_bits (d_fd_set.U):
546 This variable contains the eventual value of the HAS_FDS_BITS symbol,
547 which indicates if your fd_set typedef contains the fds_bits member.
548 If you have an fd_set typedef, but the dweebs who installed it did
549 a half-fast job and neglected to provide the macros to manipulate
550 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
552 d_fgetpos (d_fgetpos.U):
553 This variable conditionally defines HAS_FGETPOS if fgetpos() is
554 available to get the file position indicator.
556 d_flexfnam (d_flexfnam.U):
557 This variable conditionally defines the FLEXFILENAMES symbol, which
558 indicates that the system supports filenames longer than 14 characters.
561 This variable conditionally defines HAS_FLOCK if flock() is
562 available to do file locking.
565 This variable conditionally defines the HAS_FORK symbol, which
566 indicates to the C program that the fork() routine is available.
568 d_fpathconf (d_pathconf.U):
569 This variable conditionally defines the HAS_FPATHCONF symbol, which
570 indicates to the C program that the pathconf() routine is available
571 to determine file-system related limits and options associated
572 with a given open file descriptor.
574 d_fpos64_t (d_fpos64_t.U):
575 This symbol will be defined if the C compiler supports fpos64_t.
577 d_frexpl (d_frexpl.U):
578 This variable conditionally defines the HAS_FREXPL symbol, which
579 indicates to the C program that the frexpl() routine is available.
581 d_fs_data_s (d_fs_data_s.U):
582 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
583 which indicates that the struct fs_data is supported.
585 d_fseeko (d_fseeko.U):
586 This variable conditionally defines the HAS_FSEEKO symbol, which
587 indicates to the C program that the fseeko() routine is available.
589 d_fsetpos (d_fsetpos.U):
590 This variable conditionally defines HAS_FSETPOS if fsetpos() is
591 available to set the file position indicator.
593 d_fstatfs (d_fstatfs.U):
594 This variable conditionally defines the HAS_FSTATFS symbol, which
595 indicates to the C program that the fstatfs() routine is available.
597 d_fstatvfs (d_statvfs.U):
598 This variable conditionally defines the HAS_FSTATVFS symbol, which
599 indicates to the C program that the fstatvfs() routine is available.
601 d_ftello (d_ftello.U):
602 This variable conditionally defines the HAS_FTELLO symbol, which
603 indicates to the C program that the ftello() routine is available.
606 This variable conditionally defines the HAS_FTIME symbol, which indicates
607 that the ftime() routine exists. The ftime() routine is basically
608 a sub-second accuracy clock.
610 d_Gconvert (d_gconvert.U):
611 This variable holds what Gconvert is defined as to convert
612 floating point numbers into strings. It could be 'gconvert'
613 or a more complex macro emulating gconvert with gcvt() or sprintf.
615 d_Gconvert='gconvert((x),(n),(t),(b))'
616 d_Gconvert='gcvt((x),(n),(b))'
617 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
619 d_getcwd (d_getcwd.U):
620 This variable conditionally defines the HAS_GETCWD symbol, which
621 indicates to the C program that the getcwd() routine is available
622 to get the current working directory.
624 d_getespwnam (d_getespwnam.U):
625 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
626 available to retrieve enchanced (shadow) password entries by name.
628 d_getfsstat (d_getfsstat.U):
629 This variable conditionally defines the HAS_GETFSSTAT symbol, which
630 indicates to the C program that the getfsstat() routine is available.
632 d_getgrent (d_getgrent.U):
633 This variable conditionally defines the HAS_GETGRENT symbol, which
634 indicates to the C program that the getgrent() routine is available
635 for sequential access of the group database.
637 d_getgrps (d_getgrps.U):
638 This variable conditionally defines the HAS_GETGROUPS symbol, which
639 indicates to the C program that the getgroups() routine is available
640 to get the list of process groups.
642 d_gethbyaddr (d_gethbyad.U):
643 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
644 indicates to the C program that the gethostbyaddr() routine is available
645 to look up hosts by their IP addresses.
647 d_gethbyname (d_gethbynm.U):
648 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
649 indicates to the C program that the gethostbyname() routine is available
650 to look up host names in some data base or other.
652 d_gethent (d_gethent.U):
653 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
654 available to look up host names in some data base or another.
656 d_gethname (d_gethname.U):
657 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
658 indicates to the C program that the gethostname() routine may be
659 used to derive the host name.
661 d_gethostprotos (d_gethostprotos.U):
662 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
663 which indicates to the C program that <netdb.h> supplies
664 prototypes for the various gethost*() functions.
665 See also netdbtype.U for probing for various netdb types.
667 d_getlogin (d_getlogin.U):
668 This variable conditionally defines the HAS_GETLOGIN symbol, which
669 indicates to the C program that the getlogin() routine is available
670 to get the login name.
672 d_getmnt (d_getmnt.U):
673 This variable conditionally defines the HAS_GETMNT symbol, which
674 indicates to the C program that the getmnt() routine is available
675 to retrieve one or more mount info blocks by filename.
677 d_getmntent (d_getmntent.U):
678 This variable conditionally defines the HAS_GETMNTENT symbol, which
679 indicates to the C program that the getmntent() routine is available
680 to iterate through mounted files to get their mount info.
682 d_getnbyaddr (d_getnbyad.U):
683 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
684 indicates to the C program that the getnetbyaddr() routine is available
685 to look up networks by their IP addresses.
687 d_getnbyname (d_getnbynm.U):
688 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
689 indicates to the C program that the getnetbyname() routine is available
690 to look up networks by their names.
692 d_getnent (d_getnent.U):
693 This variable conditionally defines HAS_GETNETENT if getnetent() is
694 available to look up network names in some data base or another.
696 d_getnetprotos (d_getnetprotos.U):
697 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
698 which indicates to the C program that <netdb.h> supplies
699 prototypes for the various getnet*() functions.
700 See also netdbtype.U for probing for various netdb types.
702 d_getpbyname (d_getprotby.U):
703 This variable conditionally defines the HAS_GETPROTOBYNAME
704 symbol, which indicates to the C program that the
705 getprotobyname() routine is available to look up protocols
708 d_getpbynumber (d_getprotby.U):
709 This variable conditionally defines the HAS_GETPROTOBYNUMBER
710 symbol, which indicates to the C program that the
711 getprotobynumber() routine is available to look up protocols
714 d_getpent (d_getpent.U):
715 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
716 available to look up protocols in some data base or another.
718 d_getpgid (d_getpgid.U):
719 This variable conditionally defines the HAS_GETPGID symbol, which
720 indicates to the C program that the getpgid(pid) function
721 is available to get the process group id.
723 d_getpgrp2 (d_getpgrp2.U):
724 This variable conditionally defines the HAS_GETPGRP2 symbol, which
725 indicates to the C program that the getpgrp2() (as in DG/UX) routine
726 is available to get the current process group.
728 d_getpgrp (d_getpgrp.U):
729 This variable conditionally defines HAS_GETPGRP if getpgrp() is
730 available to get the current process group.
732 d_getppid (d_getppid.U):
733 This variable conditionally defines the HAS_GETPPID symbol, which
734 indicates to the C program that the getppid() routine is available
735 to get the parent process ID.
737 d_getprior (d_getprior.U):
738 This variable conditionally defines HAS_GETPRIORITY if getpriority()
739 is available to get a process's priority.
741 d_getprotoprotos (d_getprotoprotos.U):
742 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
743 which indicates to the C program that <netdb.h> supplies
744 prototypes for the various getproto*() functions.
745 See also netdbtype.U for probing for various netdb types.
747 d_getprpwnam (d_getprpwnam.U):
748 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
749 available to retrieve protected (shadow) password entries by name.
751 d_getpwent (d_getpwent.U):
752 This variable conditionally defines the HAS_GETPWENT symbol, which
753 indicates to the C program that the getpwent() routine is available
754 for sequential access of the passwd database.
756 d_getsbyname (d_getsrvby.U):
757 This variable conditionally defines the HAS_GETSERVBYNAME
758 symbol, which indicates to the C program that the
759 getservbyname() routine is available to look up services
762 d_getsbyport (d_getsrvby.U):
763 This variable conditionally defines the HAS_GETSERVBYPORT
764 symbol, which indicates to the C program that the
765 getservbyport() routine is available to look up services
768 d_getsent (d_getsent.U):
769 This variable conditionally defines HAS_GETSERVENT if getservent() is
770 available to look up network services in some data base or another.
772 d_getservprotos (d_getservprotos.U):
773 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
774 which indicates to the C program that <netdb.h> supplies
775 prototypes for the various getserv*() functions.
776 See also netdbtype.U for probing for various netdb types.
778 d_getspnam (d_getspnam.U):
779 This variable conditionally defines HAS_GETSPNAM if getspnam() is
780 available to retrieve SysV shadow password entries by name.
782 d_gettimeod (d_ftime.U):
783 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
784 indicates that the gettimeofday() system call exists (to obtain a
785 sub-second accuracy clock). You should probably include <sys/resource.h>.
787 d_gnulibc (d_gnulibc.U):
788 Defined if we're dealing with the GNU C Library.
790 d_grpasswd (i_grp.U):
791 This variable conditionally defines GRPASSWD, which indicates
792 that struct group in <grp.h> contains gr_passwd.
794 d_hasmntopt (d_hasmntopt.U):
795 This variable conditionally defines the HAS_HASMNTOPT symbol, which
796 indicates to the C program that the hasmntopt() routine is available
797 to query the mount options of file systems.
800 This variable conditionally defines HAS_HTONL if htonl() and its
801 friends are available to do network order byte swapping.
804 This variable conditionally defines the HAS_ICONV symbol, which
805 indicates to the C program that the iconv() routine is available.
807 d_index (d_strchr.U):
808 This variable conditionally defines HAS_INDEX if index() and
809 rindex() are available for string searching.
811 d_inetaton (d_inetaton.U):
812 This variable conditionally defines the HAS_INET_ATON symbol, which
813 indicates to the C program that the inet_aton() function is available
814 to parse IP address "dotted-quad" strings.
816 d_int64_t (d_int64_t.U):
817 This symbol will be defined if the C compiler supports int64_t.
819 d_isascii (d_isascii.U):
820 This variable conditionally defines the HAS_ISASCII constant,
821 which indicates to the C program that isascii() is available.
824 This variable conditionally defines the HAS_ISNAN symbol, which
825 indicates to the C program that the isnan() routine is available.
827 d_isnanl (d_isnanl.U):
828 This variable conditionally defines the HAS_ISNANL symbol, which
829 indicates to the C program that the isnanl() routine is available.
831 d_killpg (d_killpg.U):
832 This variable conditionally defines the HAS_KILLPG symbol, which
833 indicates to the C program that the killpg() routine is available
834 to kill process groups.
836 d_lchown (d_lchown.U):
837 This variable conditionally defines the HAS_LCHOWN symbol, which
838 indicates to the C program that the lchown() routine is available
839 to operate on a symbolic link (instead of following the link).
841 d_ldbl_dig (d_ldbl_dig.U):
842 This variable conditionally defines d_ldbl_dig if this system's
843 header files provide LDBL_DIG, which is the number of significant
844 digits in a long double precision number.
847 This variable conditionally defines HAS_LINK if link() is
848 available to create hard links.
850 d_locconv (d_locconv.U):
851 This variable conditionally defines HAS_LOCALECONV if localeconv() is
852 available for numeric and monetary formatting conventions.
855 This variable conditionally defines HAS_LOCKF if lockf() is
856 available to do file locking.
858 d_longdbl (d_longdbl.U):
859 This variable conditionally defines HAS_LONG_DOUBLE if
860 the long double type is supported.
862 d_longlong (d_longlong.U):
863 This variable conditionally defines HAS_LONG_LONG if
864 the long long type is supported.
866 d_lseekproto (d_lseekproto.U):
867 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
868 which indicates to the C program that the system provides
869 a prototype for the lseek() function. Otherwise, it is
870 up to the program to supply one.
873 This variable conditionally defines HAS_LSTAT if lstat() is
874 available to do file stats on symbolic links.
876 d_madvise (d_madvise.U):
877 This variable conditionally defines HAS_MADVISE if madvise() is
878 available to map a file into memory.
881 This variable conditionally defines the HAS_MBLEN symbol, which
882 indicates to the C program that the mblen() routine is available
883 to find the number of bytes in a multibye character.
885 d_mbstowcs (d_mbstowcs.U):
886 This variable conditionally defines the HAS_MBSTOWCS symbol, which
887 indicates to the C program that the mbstowcs() routine is available
888 to convert a multibyte string into a wide character string.
890 d_mbtowc (d_mbtowc.U):
891 This variable conditionally defines the HAS_MBTOWC symbol, which
892 indicates to the C program that the mbtowc() routine is available
893 to convert multibyte to a wide character.
895 d_memchr (d_memchr.U):
896 This variable conditionally defines the HAS_MEMCHR symbol, which
897 indicates to the C program that the memchr() routine is available
898 to locate characters within a C string.
900 d_memcmp (d_memcmp.U):
901 This variable conditionally defines the HAS_MEMCMP symbol, which
902 indicates to the C program that the memcmp() routine is available
903 to compare blocks of memory.
905 d_memcpy (d_memcpy.U):
906 This variable conditionally defines the HAS_MEMCPY symbol, which
907 indicates to the C program that the memcpy() routine is available
908 to copy blocks of memory.
910 d_memmove (d_memmove.U):
911 This variable conditionally defines the HAS_MEMMOVE symbol, which
912 indicates to the C program that the memmove() routine is available
913 to copy potentatially overlapping blocks of memory.
915 d_memset (d_memset.U):
916 This variable conditionally defines the HAS_MEMSET symbol, which
917 indicates to the C program that the memset() routine is available
918 to set blocks of memory.
921 This variable conditionally defines the HAS_MKDIR symbol, which
922 indicates to the C program that the mkdir() routine is available
923 to create directories..
925 d_mkdtemp (d_mkdtemp.U):
926 This variable conditionally defines the HAS_MKDTEMP symbol, which
927 indicates to the C program that the mkdtemp() routine is available
928 to exclusively create a uniquely named temporary directory.
930 d_mkfifo (d_mkfifo.U):
931 This variable conditionally defines the HAS_MKFIFO symbol, which
932 indicates to the C program that the mkfifo() routine is available.
934 d_mkstemp (d_mkstemp.U):
935 This variable conditionally defines the HAS_MKSTEMP symbol, which
936 indicates to the C program that the mkstemp() routine is available
937 to exclusively create and open a uniquely named temporary file.
939 d_mkstemps (d_mkstemps.U):
940 This variable conditionally defines the HAS_MKSTEMPS symbol, which
941 indicates to the C program that the mkstemps() routine is available
942 to exclusively create and open a uniquely named (with a suffix)
945 d_mktime (d_mktime.U):
946 This variable conditionally defines the HAS_MKTIME symbol, which
947 indicates to the C program that the mktime() routine is available.
950 This variable conditionally defines HAS_MMAP if mmap() is
951 available to map a file into memory.
954 This variable conditionally defines the HAS_MODFL symbol, which
955 indicates to the C program that the modfl() routine is available.
957 d_mprotect (d_mprotect.U):
958 This variable conditionally defines HAS_MPROTECT if mprotect() is
959 available to modify the access protection of a memory mapped file.
962 This variable conditionally defines the HAS_MSG symbol, which
963 indicates that the entire msg*(2) library is present.
965 d_msg_ctrunc (d_socket.U):
966 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
967 which indicates that the MSG_CTRUNC is available. #ifdef is
968 not enough because it may be an enum, glibc has been known to do this.
970 d_msg_dontroute (d_socket.U):
971 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
972 which indicates that the MSG_DONTROUTE is available. #ifdef is
973 not enough because it may be an enum, glibc has been known to do this.
975 d_msg_oob (d_socket.U):
976 This variable conditionally defines the HAS_MSG_OOB symbol,
977 which indicates that the MSG_OOB is available. #ifdef is
978 not enough because it may be an enum, glibc has been known to do this.
980 d_msg_peek (d_socket.U):
981 This variable conditionally defines the HAS_MSG_PEEK symbol,
982 which indicates that the MSG_PEEK is available. #ifdef is
983 not enough because it may be an enum, glibc has been known to do this.
985 d_msg_proxy (d_socket.U):
986 This variable conditionally defines the HAS_MSG_PROXY symbol,
987 which indicates that the MSG_PROXY is available. #ifdef is
988 not enough because it may be an enum, glibc has been known to do this.
990 d_msgctl (d_msgctl.U):
991 This variable conditionally defines the HAS_MSGCTL symbol, which
992 indicates to the C program that the msgctl() routine is available.
994 d_msgget (d_msgget.U):
995 This variable conditionally defines the HAS_MSGGET symbol, which
996 indicates to the C program that the msgget() routine is available.
998 d_msgrcv (d_msgrcv.U):
999 This variable conditionally defines the HAS_MSGRCV symbol, which
1000 indicates to the C program that the msgrcv() routine is available.
1002 d_msgsnd (d_msgsnd.U):
1003 This variable conditionally defines the HAS_MSGSND symbol, which
1004 indicates to the C program that the msgsnd() routine is available.
1006 d_msync (d_msync.U):
1007 This variable conditionally defines HAS_MSYNC if msync() is
1008 available to synchronize a mapped file.
1010 d_munmap (d_munmap.U):
1011 This variable conditionally defines HAS_MUNMAP if munmap() is
1012 available to unmap a region mapped by mmap().
1014 d_mymalloc (mallocsrc.U):
1015 This variable conditionally defines MYMALLOC in case other parts
1016 of the source want to take special action if MYMALLOC is used.
1017 This may include different sorts of profiling or error detection.
1020 This variable conditionally defines the HAS_NICE symbol, which
1021 indicates to the C program that the nice() routine is available.
1023 d_nv_preserves_uv (perlxv.U):
1024 This variable indicates whether a variable of type nvtype
1025 can preserve all the bits a variable of type uvtype.
1027 d_nv_preserves_uv_bits (perlxv.U):
1028 This variable indicates how many of bits type uvtype
1029 a variable nvtype can preserve.
1031 d_off64_t (d_off64_t.U):
1032 This symbol will be defined if the C compiler supports off64_t.
1034 d_old_pthread_create_joinable (d_pthrattrj.U):
1035 This variable conditionally defines pthread_create_joinable.
1036 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1038 d_oldpthreads (usethreads.U):
1039 This variable conditionally defines the OLD_PTHREADS_API symbol,
1040 and indicates that Perl should be built to use the old
1041 draft POSIX threads API. This is only potentially meaningful if
1044 d_oldsock (d_socket.U):
1045 This variable conditionally defines the OLDSOCKET symbol, which
1046 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1048 d_open3 (d_open3.U):
1049 This variable conditionally defines the HAS_OPEN3 manifest constant,
1050 which indicates to the C program that the 3 argument version of
1051 the open(2) function is available.
1053 d_pathconf (d_pathconf.U):
1054 This variable conditionally defines the HAS_PATHCONF symbol, which
1055 indicates to the C program that the pathconf() routine is available
1056 to determine file-system related limits and options associated
1057 with a given filename.
1059 d_pause (d_pause.U):
1060 This variable conditionally defines the HAS_PAUSE symbol, which
1061 indicates to the C program that the pause() routine is available
1062 to suspend a process until a signal is received.
1064 d_perl_otherlibdirs (otherlibdirs.U):
1065 This variable conditionally defines PERL_OTHERLIBDIRS, which
1066 contains a colon-separated set of paths for the perl binary to
1067 include in @INC. See also otherlibdirs.
1069 d_phostname (d_gethname.U):
1070 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1071 contains the shell command which, when fed to popen(), may be
1072 used to derive the host name.
1075 This variable conditionally defines the HAS_PIPE symbol, which
1076 indicates to the C program that the pipe() routine is available
1077 to create an inter-process channel.
1080 This variable conditionally defines the HAS_POLL symbol, which
1081 indicates to the C program that the poll() routine is available
1082 to poll active file descriptors.
1084 d_portable (d_portable.U):
1085 This variable conditionally defines the PORTABLE symbol, which
1086 indicates to the C program that it should not assume that it is
1087 running on the machine it was compiled on.
1089 d_PRId64 (quadfio.U):
1090 This variable conditionally defines the PERL_PRId64 symbol, which
1091 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1093 d_PRIeldbl (longdblfio.U):
1094 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1095 indiciates that stdio has a symbol to print long doubles.
1097 d_PRIEldbl (longdblfio.U):
1098 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1099 indiciates that stdio has a symbol to print long doubles.
1101 d_PRIfldbl (longdblfio.U):
1102 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1103 indiciates that stdio has a symbol to print long doubles.
1105 d_PRIFldbl (longdblfio.U):
1106 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1107 indiciates that stdio has a symbol to print long doubles.
1109 d_PRIgldbl (longdblfio.U):
1110 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1111 indiciates that stdio has a symbol to print long doubles.
1113 d_PRIGldbl (longdblfio.U):
1114 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1115 indiciates that stdio has a symbol to print long doubles.
1117 d_PRIi64 (quadfio.U):
1118 This variable conditionally defines the PERL_PRIi64 symbol, which
1119 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1121 d_printf_exp_digits (d_printfed.U):
1122 This symbol's value is either 2 or 3, corresponding to the
1123 number of exponent digits produced by the system's sprintf %[FGfg]
1124 formats when the modulus of the exponent is 99 or less.
1126 d_PRIo64 (quadfio.U):
1127 This variable conditionally defines the PERL_PRIo64 symbol, which
1128 indiciates that stdio has a symbol to print 64-bit octal numbers.
1130 d_PRIu64 (quadfio.U):
1131 This variable conditionally defines the PERL_PRIu64 symbol, which
1132 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1135 d_PRIx64 (quadfio.U):
1136 This variable conditionally defines the PERL_PRIx64 symbol, which
1137 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1139 d_PRIX64 (quadfio.U):
1140 This variable conditionally defines the PERL_PRIX64 symbol, which
1141 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1143 d_pthread_yield (d_pthread_y.U):
1144 This variable conditionally defines the HAS_PTHREAD_YIELD
1145 symbol if the pthread_yield routine is available to yield
1146 the execution of the current thread.
1149 This variable conditionally defines PWAGE, which indicates
1150 that struct passwd contains pw_age.
1152 d_pwchange (i_pwd.U):
1153 This variable conditionally defines PWCHANGE, which indicates
1154 that struct passwd contains pw_change.
1156 d_pwclass (i_pwd.U):
1157 This variable conditionally defines PWCLASS, which indicates
1158 that struct passwd contains pw_class.
1160 d_pwcomment (i_pwd.U):
1161 This variable conditionally defines PWCOMMENT, which indicates
1162 that struct passwd contains pw_comment.
1164 d_pwexpire (i_pwd.U):
1165 This variable conditionally defines PWEXPIRE, which indicates
1166 that struct passwd contains pw_expire.
1168 d_pwgecos (i_pwd.U):
1169 This variable conditionally defines PWGECOS, which indicates
1170 that struct passwd contains pw_gecos.
1172 d_pwpasswd (i_pwd.U):
1173 This variable conditionally defines PWPASSWD, which indicates
1174 that struct passwd contains pw_passwd.
1176 d_pwquota (i_pwd.U):
1177 This variable conditionally defines PWQUOTA, which indicates
1178 that struct passwd contains pw_quota.
1180 d_qgcvt (d_qgcvt.U):
1181 This variable conditionally defines the HAS_QGCVT symbol, which
1182 indicates to the C program that the qgcvt() routine is available.
1184 d_quad (quadtype.U):
1185 This variable, if defined, tells that there's a 64-bit integer type,
1188 d_readdir (d_readdir.U):
1189 This variable conditionally defines HAS_READDIR if readdir() is
1190 available to read directory entries.
1192 d_readlink (d_readlink.U):
1193 This variable conditionally defines the HAS_READLINK symbol, which
1194 indicates to the C program that the readlink() routine is available
1195 to read the value of a symbolic link.
1197 d_rename (d_rename.U):
1198 This variable conditionally defines the HAS_RENAME symbol, which
1199 indicates to the C program that the rename() routine is available
1202 d_rewinddir (d_readdir.U):
1203 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1206 d_rmdir (d_rmdir.U):
1207 This variable conditionally defines HAS_RMDIR if rmdir() is
1208 available to remove directories.
1210 d_safebcpy (d_safebcpy.U):
1211 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1212 the bcopy() routine can do overlapping copies.
1214 d_safemcpy (d_safemcpy.U):
1215 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1216 the memcpy() routine can do overlapping copies.
1218 d_sanemcmp (d_sanemcmp.U):
1219 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1220 the memcpy() routine is available and can be used to compare relative
1221 magnitudes of chars with their high bits set.
1223 d_sched_yield (d_pthread_y.U):
1224 This variable conditionally defines the HAS_SCHED_YIELD
1225 symbol if the sched_yield routine is available to yield
1226 the execution of the current thread.
1228 d_scm_rights (d_socket.U):
1229 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1230 which indicates that the SCM_RIGHTS is available. #ifdef is
1231 not enough because it may be an enum, glibc has been known to do this.
1233 d_seekdir (d_readdir.U):
1234 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1237 d_select (d_select.U):
1238 This variable conditionally defines HAS_SELECT if select() is
1239 available to select active file descriptors. A <sys/time.h>
1240 inclusion may be necessary for the timeout field.
1243 This variable conditionally defines the HAS_SEM symbol, which
1244 indicates that the entire sem*(2) library is present.
1246 d_semctl (d_semctl.U):
1247 This variable conditionally defines the HAS_SEMCTL symbol, which
1248 indicates to the C program that the semctl() routine is available.
1250 d_semctl_semid_ds (d_union_semun.U):
1251 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1252 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1254 d_semctl_semun (d_union_semun.U):
1255 This variable conditionally defines USE_SEMCTL_SEMUN, which
1256 indicates that union semun is to be used for semctl IPC_STAT.
1258 d_semget (d_semget.U):
1259 This variable conditionally defines the HAS_SEMGET symbol, which
1260 indicates to the C program that the semget() routine is available.
1262 d_semop (d_semop.U):
1263 This variable conditionally defines the HAS_SEMOP symbol, which
1264 indicates to the C program that the semop() routine is available.
1266 d_setegid (d_setegid.U):
1267 This variable conditionally defines the HAS_SETEGID symbol, which
1268 indicates to the C program that the setegid() routine is available
1269 to change the effective gid of the current program.
1271 d_seteuid (d_seteuid.U):
1272 This variable conditionally defines the HAS_SETEUID symbol, which
1273 indicates to the C program that the seteuid() routine is available
1274 to change the effective uid of the current program.
1276 d_setgrent (d_setgrent.U):
1277 This variable conditionally defines the HAS_SETGRENT symbol, which
1278 indicates to the C program that the setgrent() routine is available
1279 for initializing sequential access to the group database.
1281 d_setgrps (d_setgrps.U):
1282 This variable conditionally defines the HAS_SETGROUPS symbol, which
1283 indicates to the C program that the setgroups() routine is available
1284 to set the list of process groups.
1286 d_sethent (d_sethent.U):
1287 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1290 d_setlinebuf (d_setlnbuf.U):
1291 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1292 indicates to the C program that the setlinebuf() routine is available
1293 to change stderr or stdout from block-buffered or unbuffered to a
1296 d_setlocale (d_setlocale.U):
1297 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1298 available to handle locale-specific ctype implementations.
1300 d_setnent (d_setnent.U):
1301 This variable conditionally defines HAS_SETNETENT if setnetent() is
1304 d_setpent (d_setpent.U):
1305 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1308 d_setpgid (d_setpgid.U):
1309 This variable conditionally defines the HAS_SETPGID symbol if the
1310 setpgid(pid, gpid) function is available to set process group ID.
1312 d_setpgrp2 (d_setpgrp2.U):
1313 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1314 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1315 is available to set the current process group.
1317 d_setpgrp (d_setpgrp.U):
1318 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1319 available to set the current process group.
1321 d_setprior (d_setprior.U):
1322 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1323 is available to set a process's priority.
1325 d_setproctitle (d_setproctitle.U):
1326 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1327 which indicates to the C program that the setproctitle() routine
1330 d_setpwent (d_setpwent.U):
1331 This variable conditionally defines the HAS_SETPWENT symbol, which
1332 indicates to the C program that the setpwent() routine is available
1333 for initializing sequential access to the passwd database.
1335 d_setregid (d_setregid.U):
1336 This variable conditionally defines HAS_SETREGID if setregid() is
1337 available to change the real and effective gid of the current
1340 d_setresgid (d_setregid.U):
1341 This variable conditionally defines HAS_SETRESGID if setresgid() is
1342 available to change the real, effective and saved gid of the current
1345 d_setresuid (d_setreuid.U):
1346 This variable conditionally defines HAS_SETREUID if setresuid() is
1347 available to change the real, effective and saved uid of the current
1350 d_setreuid (d_setreuid.U):
1351 This variable conditionally defines HAS_SETREUID if setreuid() is
1352 available to change the real and effective uid of the current
1355 d_setrgid (d_setrgid.U):
1356 This variable conditionally defines the HAS_SETRGID symbol, which
1357 indicates to the C program that the setrgid() routine is available
1358 to change the real gid of the current program.
1360 d_setruid (d_setruid.U):
1361 This variable conditionally defines the HAS_SETRUID symbol, which
1362 indicates to the C program that the setruid() routine is available
1363 to change the real uid of the current program.
1365 d_setsent (d_setsent.U):
1366 This variable conditionally defines HAS_SETSERVENT if setservent() is
1369 d_setsid (d_setsid.U):
1370 This variable conditionally defines HAS_SETSID if setsid() is
1371 available to set the process group ID.
1373 d_setvbuf (d_setvbuf.U):
1374 This variable conditionally defines the HAS_SETVBUF symbol, which
1375 indicates to the C program that the setvbuf() routine is available
1376 to change buffering on an open stdio stream.
1379 This variable conditionally defines the USE_SFIO symbol,
1380 and indicates whether sfio is available (and should be used).
1383 This variable conditionally defines the HAS_SHM symbol, which
1384 indicates that the entire shm*(2) library is present.
1386 d_shmat (d_shmat.U):
1387 This variable conditionally defines the HAS_SHMAT symbol, which
1388 indicates to the C program that the shmat() routine is available.
1390 d_shmatprototype (d_shmat.U):
1391 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1392 symbol, which indicates that sys/shm.h has a prototype for
1395 d_shmctl (d_shmctl.U):
1396 This variable conditionally defines the HAS_SHMCTL symbol, which
1397 indicates to the C program that the shmctl() routine is available.
1399 d_shmdt (d_shmdt.U):
1400 This variable conditionally defines the HAS_SHMDT symbol, which
1401 indicates to the C program that the shmdt() routine is available.
1403 d_shmget (d_shmget.U):
1404 This variable conditionally defines the HAS_SHMGET symbol, which
1405 indicates to the C program that the shmget() routine is available.
1407 d_sigaction (d_sigaction.U):
1408 This variable conditionally defines the HAS_SIGACTION symbol, which
1409 indicates that the Vr4 sigaction() routine is available.
1411 d_sigsetjmp (d_sigsetjmp.U):
1412 This variable conditionally defines the HAS_SIGSETJMP symbol,
1413 which indicates that the sigsetjmp() routine is available to
1414 call setjmp() and optionally save the process's signal mask.
1416 d_socket (d_socket.U):
1417 This variable conditionally defines HAS_SOCKET, which indicates
1418 that the BSD socket interface is supported.
1420 d_socklen_t (d_socklen_t.U):
1421 This symbol will be defined if the C compiler supports socklen_t.
1423 d_sockpair (d_socket.U):
1424 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1425 indicates that the BSD socketpair() is supported.
1427 d_sqrtl (d_sqrtl.U):
1428 This variable conditionally defines the HAS_SQRTL symbol, which
1429 indicates to the C program that the sqrtl() routine is available.
1431 d_statblks (d_statblks.U):
1432 This variable conditionally defines USE_STAT_BLOCKS
1433 if this system has a stat structure declaring
1434 st_blksize and st_blocks.
1436 d_statfs_f_flags (d_statfs_f_flags.U):
1437 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1438 symbol, which indicates to struct statfs from has f_flags member.
1439 This kind of struct statfs is coming from sys/mount.h (BSD),
1440 not from sys/statfs.h (SYSV).
1442 d_statfs_s (d_statfs_s.U):
1443 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1444 which indicates that the struct statfs is supported.
1446 d_statvfs (d_statvfs.U):
1447 This variable conditionally defines the HAS_STATVFS symbol, which
1448 indicates to the C program that the statvfs() routine is available.
1450 d_stdio_cnt_lval (d_stdstdio.U):
1451 This variable conditionally defines STDIO_CNT_LVALUE if the
1452 FILE_cnt macro can be used as an lvalue.
1454 d_stdio_ptr_lval (d_stdstdio.U):
1455 This variable conditionally defines STDIO_PTR_LVALUE if the
1456 FILE_ptr macro can be used as an lvalue.
1458 d_stdio_stream_array (stdio_streams.U):
1459 This variable tells whether there is an array holding
1462 d_stdiobase (d_stdstdio.U):
1463 This variable conditionally defines USE_STDIO_BASE if this system
1464 has a FILE structure declaring a usable _base field (or equivalent)
1467 d_stdstdio (d_stdstdio.U):
1468 This variable conditionally defines USE_STDIO_PTR if this system
1469 has a FILE structure declaring usable _ptr and _cnt fields (or
1470 equivalent) in stdio.h.
1472 d_strchr (d_strchr.U):
1473 This variable conditionally defines HAS_STRCHR if strchr() and
1474 strrchr() are available for string searching.
1476 d_strcoll (d_strcoll.U):
1477 This variable conditionally defines HAS_STRCOLL if strcoll() is
1478 available to compare strings using collating information.
1480 d_strctcpy (d_strctcpy.U):
1481 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1482 indicates to the C program that this C compiler knows how to copy
1485 d_strerrm (d_strerror.U):
1486 This variable holds what Strerrr is defined as to translate an error
1487 code condition into an error message string. It could be 'strerror'
1488 or a more complex macro emulating strrror with sys_errlist[], or the
1489 "unknown" string when both strerror and sys_errlist are missing.
1491 d_strerror (d_strerror.U):
1492 This variable conditionally defines HAS_STRERROR if strerror() is
1493 available to translate error numbers to strings.
1495 d_strtod (d_strtod.U):
1496 This variable conditionally defines the HAS_STRTOD symbol, which
1497 indicates to the C program that the strtod() routine is available
1498 to provide better numeric string conversion than atof().
1500 d_strtol (d_strtol.U):
1501 This variable conditionally defines the HAS_STRTOL symbol, which
1502 indicates to the C program that the strtol() routine is available
1503 to provide better numeric string conversion than atoi() and friends.
1505 d_strtold (d_strtold.U):
1506 This variable conditionally defines the HAS_STRTOLD symbol, which
1507 indicates to the C program that the strtold() routine is available.
1509 d_strtoll (d_strtoll.U):
1510 This variable conditionally defines the HAS_STRTOLL symbol, which
1511 indicates to the C program that the strtoll() routine is available.
1513 d_strtoul (d_strtoul.U):
1514 This variable conditionally defines the HAS_STRTOUL symbol, which
1515 indicates to the C program that the strtoul() routine is available
1516 to provide conversion of strings to unsigned long.
1518 d_strtoull (d_strtoull.U):
1519 This variable conditionally defines the HAS_STRTOULL symbol, which
1520 indicates to the C program that the strtoull() routine is available.
1522 d_strtouq (d_strtouq.U):
1523 This variable conditionally defines the HAS_STRTOUQ symbol, which
1524 indicates to the C program that the strtouq() routine is available.
1526 d_strxfrm (d_strxfrm.U):
1527 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1528 available to transform strings.
1530 d_suidsafe (d_dosuid.U):
1531 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1532 if setuid scripts can be secure. This test looks in /dev/fd/.
1534 d_symlink (d_symlink.U):
1535 This variable conditionally defines the HAS_SYMLINK symbol, which
1536 indicates to the C program that the symlink() routine is available
1537 to create symbolic links.
1539 d_syscall (d_syscall.U):
1540 This variable conditionally defines HAS_SYSCALL if syscall() is
1541 available call arbitrary system calls.
1543 d_sysconf (d_sysconf.U):
1544 This variable conditionally defines the HAS_SYSCONF symbol, which
1545 indicates to the C program that the sysconf() routine is available
1546 to determine system related limits and options.
1548 d_sysernlst (d_strerror.U):
1549 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1550 is available to translate error numbers to the symbolic name.
1552 d_syserrlst (d_strerror.U):
1553 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1554 available to translate error numbers to strings.
1556 d_system (d_system.U):
1557 This variable conditionally defines HAS_SYSTEM if system() is
1558 available to issue a shell command.
1560 d_tcgetpgrp (d_tcgtpgrp.U):
1561 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1562 indicates to the C program that the tcgetpgrp() routine is available.
1563 to get foreground process group ID.
1565 d_tcsetpgrp (d_tcstpgrp.U):
1566 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1567 indicates to the C program that the tcsetpgrp() routine is available
1568 to set foreground process group ID.
1570 d_telldir (d_readdir.U):
1571 This variable conditionally defines HAS_TELLDIR if telldir() is
1574 d_telldirproto (d_telldirproto.U):
1575 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1576 which indicates to the C program that the system provides
1577 a prototype for the telldir() function. Otherwise, it is
1578 up to the program to supply one.
1581 This variable conditionally defines the HAS_TIME symbol, which indicates
1582 that the time() routine exists. The time() routine is normaly
1583 provided on UNIX systems.
1585 d_times (d_times.U):
1586 This variable conditionally defines the HAS_TIMES symbol, which indicates
1587 that the times() routine exists. The times() routine is normaly
1588 provided on UNIX systems. You may have to include <sys/times.h>.
1590 d_truncate (d_truncate.U):
1591 This variable conditionally defines HAS_TRUNCATE if truncate() is
1592 available to truncate files.
1594 d_tzname (d_tzname.U):
1595 This variable conditionally defines HAS_TZNAME if tzname[] is
1596 available to access timezone names.
1598 d_umask (d_umask.U):
1599 This variable conditionally defines the HAS_UMASK symbol, which
1600 indicates to the C program that the umask() routine is available.
1601 to set and get the value of the file creation mask.
1603 d_uname (d_gethname.U):
1604 This variable conditionally defines the HAS_UNAME symbol, which
1605 indicates to the C program that the uname() routine may be
1606 used to derive the host name.
1608 d_union_semun (d_union_semun.U):
1609 This variable conditionally defines HAS_UNION_SEMUN if the
1610 union semun is defined by including <sys/sem.h>.
1612 d_ustat (d_ustat.U):
1613 This variable conditionally defines HAS_USTAT if ustat() is
1614 available to query file system statistics by dev_t.
1616 d_vendorarch (vendorarch.U):
1617 This variable conditionally defined PERL_VENDORARCH.
1619 d_vendorbin (vendorbin.U):
1620 This variable conditionally defines PERL_VENDORBIN.
1622 d_vendorlib (vendorlib.U):
1623 This variable conditionally defines PERL_VENDORLIB.
1625 d_vfork (d_vfork.U):
1626 This variable conditionally defines the HAS_VFORK symbol, which
1627 indicates the vfork() routine is available.
1629 d_void_closedir (d_closedir.U):
1630 This variable conditionally defines VOID_CLOSEDIR if closedir()
1631 does not return a value.
1633 d_voidsig (d_voidsig.U):
1634 This variable conditionally defines VOIDSIG if this system
1635 declares "void (*signal(...))()" in signal.h. The old way was to
1636 declare it as "int (*signal(...))()".
1638 d_voidtty (i_sysioctl.U):
1639 This variable conditionally defines USE_IOCNOTTY to indicate that the
1640 ioctl() call with TIOCNOTTY should be used to void tty association.
1641 Otherwise (on USG probably), it is enough to close the standard file
1642 decriptors and do a setpgrp().
1644 d_volatile (d_volatile.U):
1645 This variable conditionally defines the HASVOLATILE symbol, which
1646 indicates to the C program that this C compiler knows about the
1647 volatile declaration.
1649 d_vprintf (d_vprintf.U):
1650 This variable conditionally defines the HAS_VPRINTF symbol, which
1651 indicates to the C program that the vprintf() routine is available
1652 to printf with a pointer to an argument list.
1654 d_wait4 (d_wait4.U):
1655 This variable conditionally defines the HAS_WAIT4 symbol, which
1656 indicates the wait4() routine is available.
1658 d_waitpid (d_waitpid.U):
1659 This variable conditionally defines HAS_WAITPID if waitpid() is
1660 available to wait for child process.
1662 d_wcstombs (d_wcstombs.U):
1663 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1664 indicates to the C program that the wcstombs() routine is available
1665 to convert wide character strings to multibyte strings.
1667 d_wctomb (d_wctomb.U):
1668 This variable conditionally defines the HAS_WCTOMB symbol, which
1669 indicates to the C program that the wctomb() routine is available
1670 to convert a wide character to a multibyte.
1673 This variable conditionally defines the symbol XENIX, which alerts
1674 the C program that it runs under Xenix.
1677 This variable is used internally by Configure to determine the
1678 full pathname (if any) of the date program. After Configure runs,
1679 the value is reset to a plain "date" and is not useful.
1681 db_hashtype (i_db.U):
1682 This variable contains the type of the hash structure element
1683 in the <db.h> header file. In older versions of DB, it was
1684 int, while in newer ones it is u_int32_t.
1686 db_prefixtype (i_db.U):
1687 This variable contains the type of the prefix structure element
1688 in the <db.h> header file. In older versions of DB, it was
1689 int, while in newer ones it is size_t.
1691 defvoidused (voidflags.U):
1692 This variable contains the default value of the VOIDUSED symbol (15).
1694 direntrytype (i_dirent.U):
1695 This symbol is set to 'struct direct' or 'struct dirent' depending on
1696 whether dirent is available or not. You should use this pseudo type to
1697 portably declare your directory entries.
1700 This variable contains the extension that is to be used for the
1701 dynamically loaded modules that perl generaties.
1704 This variable contains the name of the dynamic loading file that
1705 will be used with the package.
1707 doublesize (doublesize.U):
1708 This variable contains the value of the DOUBLESIZE symbol, which
1709 indicates to the C program how many bytes there are in a double.
1711 drand01 (randfunc.U):
1712 Indicates the macro to be used to generate normalized
1713 random numbers. Uses randfunc, often divided by
1714 (double) (((unsigned long) 1 << randbits)) in order to
1715 normalize the result.
1716 In C programs, the macro 'Drand01' is mapped to drand01.
1718 dynamic_ext (Extensions.U):
1719 This variable holds a list of XS extension files we want to
1720 link dynamically into the package. It is used by Makefile.
1722 eagain (nblock_io.U):
1723 This variable bears the symbolic errno code set by read() when no
1724 data is present on the file and non-blocking I/O was enabled (otherwise,
1725 read() blocks naturally).
1728 This variable conditionally defines EBCDIC if this
1729 system uses EBCDIC encoding. Among other things, this
1730 means that the character ranges are not contiguous.
1734 This variable is used internally by Configure to determine the
1735 full pathname (if any) of the echo program. After Configure runs,
1736 the value is reset to a plain "echo" and is not useful.
1739 This variable is used internally by Configure to determine the
1740 full pathname (if any) of the egrep program. After Configure runs,
1741 the value is reset to a plain "egrep" and is not useful.
1744 This variable is defined but not used by Configure.
1745 The value is a plain '' and is not useful.
1748 When running under Eunice this variable contains a command which will
1749 convert a shell script to the proper form of text file for it to be
1750 executable by the shell. On other systems it is a no-op.
1753 This is an old synonym for _exe.
1756 This variable is used internally by Configure to determine the
1757 full pathname (if any) of the expr program. After Configure runs,
1758 the value is reset to a plain "expr" and is not useful.
1760 extensions (Extensions.U):
1761 This variable holds a list of all extension files (both XS and
1762 non-xs linked into the package. It is propagated to Config.pm
1763 and is typically used to test whether a particular extesion
1766 fflushall (fflushall.U):
1767 This symbol, if defined, tells that to flush
1768 all pending stdio output one must loop through all
1769 the stdio file handles stored in an array and fflush them.
1770 Note that if fflushNULL is defined, fflushall will not
1771 even be probed for and will be left undefined.
1773 fflushNULL (fflushall.U):
1774 This symbol, if defined, tells that fflush(NULL) does flush
1775 all pending stdio output.
1778 This variable is defined but not used by Configure.
1779 The value is a plain '' and is not useful.
1781 firstmakefile (Unix.U):
1782 This variable defines the first file searched by make. On unix,
1783 it is makefile (then Makefile). On case-insensitive systems,
1784 it might be something else. This is only used to deal with
1785 convoluted make depend tricks.
1788 This variable is defined but not used by Configure.
1789 The value is a plain '' and is not useful.
1791 fpossize (fpossize.U):
1792 This variable contains the size of a fpostype in bytes.
1794 fpostype (fpostype.U):
1795 This variable defines Fpos_t to be something like fpos_t, long,
1796 uint, or whatever type is used to declare file positions in libc.
1798 freetype (mallocsrc.U):
1799 This variable contains the return type of free(). It is usually
1800 void, but occasionally int.
1803 This variable contains the full pathname to 'ar', whether or
1804 not the user has specified 'portability'. This is only used
1808 This variable contains the full pathname to 'csh', whether or
1809 not the user has specified 'portability'. This is only used
1810 in the compiled C program, and we assume that all systems which
1811 can share this executable will have the same full pathname to
1814 full_sed (Loc_sed.U):
1815 This variable contains the full pathname to 'sed', whether or
1816 not the user has specified 'portability'. This is only used
1817 in the compiled C program, and we assume that all systems which
1818 can share this executable will have the same full pathname to
1821 gccosandvers (gccvers.U):
1822 If GNU cc (gcc) is used, this variable the operating system and
1823 version used to compile the gcc. It is set to '' if not gcc,
1824 or if nothing useful can be parsed as the os version.
1826 gccversion (gccvers.U):
1827 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1828 indicate whether the compiler is version 1 or 2. This is used in
1829 setting some of the default cflags. It is set to '' if not gcc.
1832 This variable contains the format string used for printing a Gid_t.
1834 gidsign (gidsign.U):
1835 This variable contains the signedness of a gidtype.
1836 1 for unsigned, -1 for signed.
1838 gidsize (gidsize.U):
1839 This variable contains the size of a gidtype in bytes.
1841 gidtype (gidtype.U):
1842 This variable defines Gid_t to be something like gid_t, int,
1843 ushort, or whatever type is used to declare the return type
1844 of getgid(). Typically, it is the type of group ids in the kernel.
1847 This variable holds the general path (space-separated) used to
1848 find libraries. It may contain directories that do not exist on
1849 this platform, libpth is the cleaned-up version.
1852 This variable is used internally by Configure to determine the
1853 full pathname (if any) of the grep program. After Configure runs,
1854 the value is reset to a plain "grep" and is not useful.
1857 This variable contains a command that produces the text of the
1858 /etc/group file. This is normally "cat /etc/group", but can be
1859 "ypcat group" when NIS is used.
1860 On some systems, such as os390, there may be no equivalent
1861 command, in which case this variable is unset.
1863 groupstype (groupstype.U):
1864 This variable defines Groups_t to be something like gid_t, int,
1865 ushort, or whatever type is used for the second argument to
1866 getgroups() and setgroups(). Usually, this is the same as
1867 gidtype (gid_t), but sometimes it isn't.
1870 This variable is used internally by Configure to determine the
1871 full pathname (if any) of the gzip program. After Configure runs,
1872 the value is reset to a plain "gzip" and is not useful.
1874 h_fcntl (h_fcntl.U):
1875 This is variable gets set in various places to tell i_fcntl that
1876 <fcntl.h> should be included.
1878 h_sysfile (h_sysfile.U):
1879 This is variable gets set in various places to tell i_sys_file that
1880 <sys/file.h> should be included.
1883 Gives the type of hints used for previous answers. May be one of
1884 "default", "recommended" or "previous".
1887 This variable contains a command that produces the text of the
1888 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1889 "ypcat hosts" when NIS is used.
1890 On some systems, such as os390, there may be no equivalent
1891 command, in which case this variable is unset.
1894 This variable contains a flag which will tell the C compiler and loader
1895 to produce a program running with a huge memory model. If the
1896 huge model is not supported, contains the flag to produce large
1897 model programs. It is up to the Makefile to use this.
1900 This variable is the size of an I16 in bytes.
1903 This variable contains the C type used for Perl's I16.
1906 This variable is the size of an I32 in bytes.
1909 This variable contains the C type used for Perl's I32.
1912 This variable is the size of an I64 in bytes.
1915 This variable contains the C type used for Perl's I64.
1918 This variable is the size of an I8 in bytes.
1921 This variable contains the C type used for Perl's I8.
1923 i_arpainet (i_arpainet.U):
1924 This variable conditionally defines the I_ARPA_INET symbol,
1925 and indicates whether a C program should include <arpa/inet.h>.
1927 i_bsdioctl (i_sysioctl.U):
1928 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1929 indicates to the C program that <sys/bsdioctl.h> exists and should
1933 This variable conditionally defines the I_DB symbol, and indicates
1934 whether a C program may include Berkeley's DB include file <db.h>.
1937 This variable conditionally defines the I_DBM symbol, which
1938 indicates to the C program that <dbm.h> exists and should
1941 i_dirent (i_dirent.U):
1942 This variable conditionally defines I_DIRENT, which indicates
1943 to the C program that it should include <dirent.h>.
1946 This variable conditionally defines the I_DLD symbol, which
1947 indicates to the C program that <dld.h> (GNU dynamic loading)
1948 exists and should be included.
1950 i_dlfcn (i_dlfcn.U):
1951 This variable conditionally defines the I_DLFCN symbol, which
1952 indicates to the C program that <dlfcn.h> exists and should
1955 i_fcntl (i_fcntl.U):
1956 This variable controls the value of I_FCNTL (which tells
1957 the C program to include <fcntl.h>).
1959 i_float (i_float.U):
1960 This variable conditionally defines the I_FLOAT symbol, and indicates
1961 whether a C program may include <float.h> to get symbols like DBL_MAX
1962 or DBL_MIN, i.e. machine dependent floating point values.
1965 This variable conditionally defines the I_GDBM symbol, which
1966 indicates to the C program that <gdbm.h> exists and should
1970 This variable conditionally defines the I_GRP symbol, and indicates
1971 whether a C program should include <grp.h>.
1973 i_iconv (i_iconv.U):
1974 This variable conditionally defines the I_ICONV symbol, and indicates
1975 whether a C program should include <iconv.h>.
1977 i_ieeefp (i_ieeefp.U):
1978 This variable conditionally defines the I_IEEEFP symbol, and indicates
1979 whether a C program should include <ieeefp.h>.
1981 i_inttypes (i_inttypes.U):
1982 This variable conditionally defines the I_INTTYPES symbol,
1983 and indicates whether a C program should include <inttypes.h>.
1985 i_libutil (i_libutil.U):
1986 This variable conditionally defines the I_LIBUTIL symbol, and indicates
1987 whether a C program should include <libutil.h>.
1989 i_limits (i_limits.U):
1990 This variable conditionally defines the I_LIMITS symbol, and indicates
1991 whether a C program may include <limits.h> to get symbols like WORD_BIT
1994 i_locale (i_locale.U):
1995 This variable conditionally defines the I_LOCALE symbol,
1996 and indicates whether a C program should include <locale.h>.
1998 i_machcthr (i_machcthr.U):
1999 This variable conditionally defines the I_MACH_CTHREADS symbol,
2000 and indicates whether a C program should include <mach/cthreads.h>.
2002 i_malloc (i_malloc.U):
2003 This variable conditionally defines the I_MALLOC symbol, and indicates
2004 whether a C program should include <malloc.h>.
2007 This variable conditionally defines the I_MATH symbol, and indicates
2008 whether a C program may include <math.h>.
2010 i_memory (i_memory.U):
2011 This variable conditionally defines the I_MEMORY symbol, and indicates
2012 whether a C program should include <memory.h>.
2014 i_mntent (i_mntent.U):
2015 This variable conditionally defines the I_MNTENT symbol, and indicates
2016 whether a C program should include <mntent.h>.
2019 This variable conditionally defines the I_NDBM symbol, which
2020 indicates to the C program that <ndbm.h> exists and should
2023 i_netdb (i_netdb.U):
2024 This variable conditionally defines the I_NETDB symbol, and indicates
2025 whether a C program should include <netdb.h>.
2027 i_neterrno (i_neterrno.U):
2028 This variable conditionally defines the I_NET_ERRNO symbol, which
2029 indicates to the C program that <net/errno.h> exists and should
2032 i_netinettcp (i_netinettcp.U):
2033 This variable conditionally defines the I_NETINET_TCP symbol,
2034 and indicates whether a C program should include <netinet/tcp.h>.
2037 This variable conditionally defines I_NETINET_IN, which indicates
2038 to the C program that it should include <netinet/in.h>. Otherwise,
2039 you may try <sys/in.h>.
2042 This variable conditionally defines the I_POLL symbol, and indicates
2043 whether a C program should include <poll.h>.
2046 This variable conditionally defines the I_PROT symbol, and indicates
2047 whether a C program should include <prot.h>.
2049 i_pthread (i_pthread.U):
2050 This variable conditionally defines the I_PTHREAD symbol,
2051 and indicates whether a C program should include <pthread.h>.
2054 This variable conditionally defines I_PWD, which indicates
2055 to the C program that it should include <pwd.h>.
2057 i_rpcsvcdbm (i_dbm.U):
2058 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2059 indicates to the C program that <rpcsvc/dbm.h> exists and should
2060 be included. Some System V systems might need this instead of <dbm.h>.
2063 This variable conditionally defines the I_SFIO symbol,
2064 and indicates whether a C program should include <sfio.h>.
2066 i_sgtty (i_termio.U):
2067 This variable conditionally defines the I_SGTTY symbol, which
2068 indicates to the C program that it should include <sgtty.h> rather
2071 i_shadow (i_shadow.U):
2072 This variable conditionally defines the I_SHADOW symbol, and indicates
2073 whether a C program should include <shadow.h>.
2075 i_socks (i_socks.U):
2076 This variable conditionally defines the I_SOCKS symbol, and indicates
2077 whether a C program should include <socks.h>.
2079 i_stdarg (i_varhdr.U):
2080 This variable conditionally defines the I_STDARG symbol, which
2081 indicates to the C program that <stdarg.h> exists and should
2084 i_stddef (i_stddef.U):
2085 This variable conditionally defines the I_STDDEF symbol, which
2086 indicates to the C program that <stddef.h> exists and should
2089 i_stdlib (i_stdlib.U):
2090 This variable conditionally defines the I_STDLIB symbol, which
2091 indicates to the C program that <stdlib.h> exists and should
2094 i_string (i_string.U):
2095 This variable conditionally defines the I_STRING symbol, which
2096 indicates that <string.h> should be included rather than <strings.h>.
2098 i_sunmath (i_sunmath.U):
2099 This variable conditionally defines the I_SUNMATH symbol, and indicates
2100 whether a C program should include <sunmath.h>.
2102 i_sysaccess (i_sysaccess.U):
2103 This variable conditionally defines the I_SYS_ACCESS symbol,
2104 and indicates whether a C program should include <sys/access.h>.
2106 i_sysdir (i_sysdir.U):
2107 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2108 whether a C program should include <sys/dir.h>.
2110 i_sysfile (i_sysfile.U):
2111 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2112 whether a C program should include <sys/file.h> to get R_OK and friends.
2114 i_sysfilio (i_sysioctl.U):
2115 This variable conditionally defines the I_SYS_FILIO symbol, which
2116 indicates to the C program that <sys/filio.h> exists and should
2117 be included in preference to <sys/ioctl.h>.
2120 This variable conditionally defines I_SYS_IN, which indicates
2121 to the C program that it should include <sys/in.h> instead of
2124 i_sysioctl (i_sysioctl.U):
2125 This variable conditionally defines the I_SYS_IOCTL symbol, which
2126 indicates to the C program that <sys/ioctl.h> exists and should
2129 i_syslog (i_syslog.U):
2130 This variable conditionally defines the I_SYSLOG symbol,
2131 and indicates whether a C program should include <syslog.h>.
2133 i_sysmman (i_sysmman.U):
2134 This variable conditionally defines the I_SYS_MMAN symbol, and
2135 indicates whether a C program should include <sys/mman.h>.
2137 i_sysmode (i_sysmode.U):
2138 This variable conditionally defines the I_SYSMODE symbol,
2139 and indicates whether a C program should include <sys/mode.h>.
2141 i_sysmount (i_sysmount.U):
2142 This variable conditionally defines the I_SYSMOUNT symbol,
2143 and indicates whether a C program should include <sys/mount.h>.
2145 i_sysndir (i_sysndir.U):
2146 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2147 whether a C program should include <sys/ndir.h>.
2149 i_sysparam (i_sysparam.U):
2150 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2151 whether a C program should include <sys/param.h>.
2153 i_sysresrc (i_sysresrc.U):
2154 This variable conditionally defines the I_SYS_RESOURCE symbol,
2155 and indicates whether a C program should include <sys/resource.h>.
2157 i_syssecrt (i_syssecrt.U):
2158 This variable conditionally defines the I_SYS_SECURITY symbol,
2159 and indicates whether a C program should include <sys/security.h>.
2161 i_sysselct (i_sysselct.U):
2162 This variable conditionally defines I_SYS_SELECT, which indicates
2163 to the C program that it should include <sys/select.h> in order to
2164 get the definition of struct timeval.
2166 i_syssockio (i_sysioctl.U):
2167 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2168 C program that socket ioctl codes may be found in <sys/sockio.h>
2169 instead of <sys/ioctl.h>.
2171 i_sysstat (i_sysstat.U):
2172 This variable conditionally defines the I_SYS_STAT symbol,
2173 and indicates whether a C program should include <sys/stat.h>.
2175 i_sysstatfs (i_sysstatfs.U):
2176 This variable conditionally defines the I_SYSSTATFS symbol,
2177 and indicates whether a C program should include <sys/statfs.h>.
2179 i_sysstatvfs (i_sysstatvfs.U):
2180 This variable conditionally defines the I_SYSSTATVFS symbol,
2181 and indicates whether a C program should include <sys/statvfs.h>.
2183 i_systime (i_time.U):
2184 This variable conditionally defines I_SYS_TIME, which indicates
2185 to the C program that it should include <sys/time.h>.
2187 i_systimek (i_time.U):
2188 This variable conditionally defines I_SYS_TIME_KERNEL, which
2189 indicates to the C program that it should include <sys/time.h>
2190 with KERNEL defined.
2192 i_systimes (i_systimes.U):
2193 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2194 whether a C program should include <sys/times.h>.
2196 i_systypes (i_systypes.U):
2197 This variable conditionally defines the I_SYS_TYPES symbol,
2198 and indicates whether a C program should include <sys/types.h>.
2200 i_sysuio (i_sysuio.U):
2201 This variable conditionally defines the I_SYSUIO symbol, and indicates
2202 whether a C program should include <sys/uio.h>.
2204 i_sysun (i_sysun.U):
2205 This variable conditionally defines I_SYS_UN, which indicates
2206 to the C program that it should include <sys/un.h> to get UNIX
2207 domain socket definitions.
2209 i_sysutsname (i_sysutsname.U):
2210 This variable conditionally defines the I_SYSUTSNAME symbol,
2211 and indicates whether a C program should include <sys/utsname.h>.
2213 i_sysvfs (i_sysvfs.U):
2214 This variable conditionally defines the I_SYSVFS symbol,
2215 and indicates whether a C program should include <sys/vfs.h>.
2217 i_syswait (i_syswait.U):
2218 This variable conditionally defines I_SYS_WAIT, which indicates
2219 to the C program that it should include <sys/wait.h>.
2221 i_termio (i_termio.U):
2222 This variable conditionally defines the I_TERMIO symbol, which
2223 indicates to the C program that it should include <termio.h> rather
2226 i_termios (i_termio.U):
2227 This variable conditionally defines the I_TERMIOS symbol, which
2228 indicates to the C program that the POSIX <termios.h> file is
2232 This variable conditionally defines I_TIME, which indicates
2233 to the C program that it should include <time.h>.
2235 i_unistd (i_unistd.U):
2236 This variable conditionally defines the I_UNISTD symbol, and indicates
2237 whether a C program should include <unistd.h>.
2239 i_ustat (i_ustat.U):
2240 This variable conditionally defines the I_USTAT symbol, and indicates
2241 whether a C program should include <ustat.h>.
2243 i_utime (i_utime.U):
2244 This variable conditionally defines the I_UTIME symbol, and indicates
2245 whether a C program should include <utime.h>.
2247 i_values (i_values.U):
2248 This variable conditionally defines the I_VALUES symbol, and indicates
2249 whether a C program may include <values.h> to get symbols like MAXLONG
2252 i_varargs (i_varhdr.U):
2253 This variable conditionally defines I_VARARGS, which indicates
2254 to the C program that it should include <varargs.h>.
2256 i_varhdr (i_varhdr.U):
2257 Contains the name of the header to be included to get va_dcl definition.
2258 Typically one of varargs.h or stdarg.h.
2260 i_vfork (i_vfork.U):
2261 This variable conditionally defines the I_VFORK symbol, and indicates
2262 whether a C program should include vfork.h.
2264 ignore_versioned_solibs (libs.U):
2265 This variable should be non-empty if non-versioned shared
2266 libraries (libfoo.so.x.y) are to be ignored (because they
2267 cannot be linked against).
2269 inc_version_list (inc_version_list.U):
2270 This variable specifies the list of subdirectories in over
2271 which perl.c:incpush() and lib/lib.pm will automatically
2272 search when adding directories to @INC. The elements in
2273 the list are separated by spaces. This is only useful
2274 if you have a perl library directory tree structured like the
2275 default one. See INSTALL for how this works. The versioned
2276 site_perl directory was introduced in 5.005, so that is the
2277 lowest possible value.
2279 inc_version_list_init (inc_version_list.U):
2280 This variable holds the same list as inc_version_list, but
2281 each item is enclosed in double quotes and separated by commas,
2282 suitable for use in the PERL_INC_VERSION_LIST initialization.
2285 This variable must preceed the normal include path to get hte
2286 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2287 Value can be "" or "/bsd43" on mips.
2290 This variable is defined but not used by Configure.
2291 The value is a plain '' and is not useful.
2293 installarchlib (archlib.U):
2294 This variable is really the same as archlibexp but may differ on
2295 those systems using AFS. For extra portability, only this variable
2296 should be used in makefiles.
2299 This variable is the same as binexp unless AFS is running in which case
2300 the user is explicitely prompted for it. This variable should always
2301 be used in your makefiles for maximum portability.
2303 installman1dir (man1dir.U):
2304 This variable is really the same as man1direxp, unless you are using
2305 AFS in which case it points to the read/write location whereas
2306 man1direxp only points to the read-only access location. For extra
2307 portability, you should only use this variable within your makefiles.
2309 installman3dir (man3dir.U):
2310 This variable is really the same as man3direxp, unless you are using
2311 AFS in which case it points to the read/write location whereas
2312 man3direxp only points to the read-only access location. For extra
2313 portability, you should only use this variable within your makefiles.
2315 installprefix (installprefix.U):
2316 This variable holds the name of the directory below which
2317 "make install" will install the package. For most users, this
2318 is the same as prefix. However, it is useful for
2319 installing the software into a different (usually temporary)
2320 location after which it can be bundled up and moved somehow
2321 to the final location specified by prefix.
2323 installprefixexp (installprefix.U):
2324 This variable holds the full absolute path of installprefix
2325 with all ~-expansion done.
2327 installprivlib (privlib.U):
2328 This variable is really the same as privlibexp but may differ on
2329 those systems using AFS. For extra portability, only this variable
2330 should be used in makefiles.
2332 installscript (scriptdir.U):
2333 This variable is usually the same as scriptdirexp, unless you are on
2334 a system running AFS, in which case they may differ slightly. You
2335 should always use this variable within your makefiles for portability.
2337 installsitearch (sitearch.U):
2338 This variable is really the same as sitearchexp but may differ on
2339 those systems using AFS. For extra portability, only this variable
2340 should be used in makefiles.
2342 installsitebin (sitebin.U):
2343 This variable is usually the same as sitebinexp, unless you are on
2344 a system running AFS, in which case they may differ slightly. You
2345 should always use this variable within your makefiles for portability.
2347 installsitelib (sitelib.U):
2348 This variable is really the same as sitelibexp but may differ on
2349 those systems using AFS. For extra portability, only this variable
2350 should be used in makefiles.
2352 installstyle (installstyle.U):
2353 This variable describes the "style" of the perl installation.
2354 This is intended to be useful for tools that need to
2355 manipulate entire perl distributions. Perl itself doesn't use
2356 this to find its libraries -- the library directories are
2357 stored directly in Config.pm. Currently, there are only two
2358 styles: "lib" and "lib/perl5". The default library locations
2359 (e.g. privlib, sitelib) are either $prefix/lib or
2360 $prefix/lib/perl5. The former is useful if $prefix is a
2361 directory dedicated to perl (e.g. /opt/perl), while the latter
2362 is useful if $prefix is shared by many packages, e.g. if
2364 This may later be extended to include other information, so
2365 be careful with pattern-matching on the results.
2366 For compatibility with perl5.005 and earlier, the default
2367 setting is based on whether or not $prefix contains the string
2370 installusrbinperl (instubperl.U):
2371 This variable tells whether Perl should be installed also as
2372 /usr/bin/perl in addition to
2375 installvendorarch (vendorarch.U):
2376 This variable is really the same as vendorarchexp but may differ on
2377 those systems using AFS. For extra portability, only this variable
2378 should be used in makefiles.
2380 installvendorbin (vendorbin.U):
2381 This variable is really the same as vendorbinexp but may differ on
2382 those systems using AFS. For extra portability, only this variable
2383 should be used in makefiles.
2385 installvendorlib (vendorlib.U):
2386 This variable is really the same as vendorlibexp but may differ on
2387 those systems using AFS. For extra portability, only this variable
2388 should be used in makefiles.
2390 intsize (intsize.U):
2391 This variable contains the value of the INTSIZE symbol, which
2392 indicates to the C program how many bytes there are in an int.
2394 ivdformat (perlxvf.U):
2395 This variable contains the format string used for printing
2396 a Perl IV as a signed decimal integer.
2399 This variable is the size of an IV in bytes.
2402 This variable contains the C type used for Perl's IV.
2404 known_extensions (Extensions.U):
2405 This variable holds a list of all XS extensions included in
2409 This variable is defined but not used by Configure.
2410 The value is a plain '' and is not useful.
2413 This variable contains a flag which will tell the C compiler and loader
2414 to produce a program running with a large memory model. It is up to
2415 the Makefile to use this.
2418 This variable indicates the program to be used to link
2419 libraries for dynamic loading. On some systems, it is 'ld'.
2420 On ELF systems, it should be $cc. Mostly, we'll try to respect
2421 the hint file setting.
2423 lddlflags (dlsrc.U):
2424 This variable contains any special flags that might need to be
2425 passed to $ld to create a shared library suitable for dynamic
2426 loading. It is up to the makefile to use it. For hpux, it
2427 should be '-b'. For sunos 4.1, it is empty.
2429 ldflags (ccflags.U):
2430 This variable contains any additional C loader flags desired by
2431 the user. It is up to the Makefile to use this.
2433 ldflags_uselargefiles (uselfs.U):
2434 This variable contains the loader flags needed by large file builds
2435 and added to ldflags by hints files.
2437 ldlibpthname (libperl.U):
2438 This variable holds the name of the shared library
2439 search path, often LD_LIBRARY_PATH. To get an empty
2440 string, the hints file must set this to 'none'.
2443 This variable is used internally by Configure to determine the
2444 full pathname (if any) of the less program. After Configure runs,
2445 the value is reset to a plain "less" and is not useful.
2448 This is an old synonym for _a.
2451 This variable contains the location of the C library.
2453 libperl (libperl.U):
2454 The perl executable is obtained by linking perlmain.c with
2455 libperl, any static extensions (usually just DynaLoader),
2456 and any other libraries needed on this system. libperl
2457 is usually libperl.a, but can also be libperl.so.xxx if
2458 the user wishes to build a perl executable with a shared
2462 This variable holds the general path (space-separated) used to find
2463 libraries. It is intended to be used by other units.
2466 This variable holds the additional libraries we want to use.
2467 It is up to the Makefile to deal with it.
2470 This variable holds the directory names aka dirnames of the libraries
2471 we found and accepted, duplicates are removed.
2474 This variable holds the filenames aka basenames of the libraries
2475 we found and accepted.
2478 This variable holds the full pathnames of the libraries
2479 we found and accepted.
2482 This variable holds the directory names probed for libraries.
2484 libswanted (Myinit.U):
2485 This variable holds a list of all the libraries we want to
2486 search. The order is chosen to pick up the c library
2487 ahead of ucb or bsd libraries for SVR4.
2489 libswanted_uselargefiles (uselfs.U):
2490 This variable contains the libraries needed by large file builds
2491 and added to ldflags by hints files. It is a space separated list
2492 of the library names without the "lib" prefix or any suffix, just
2496 This variable is defined but not used by Configure.
2497 The value is a plain '' and is not useful.
2500 This variable is defined but not used by Configure.
2501 The value is a plain '' and is not useful.
2503 lkflags (ccflags.U):
2504 This variable contains any additional C partial linker flags desired by
2505 the user. It is up to the Makefile to use this.
2508 This variable is used internally by Configure to determine the
2509 full pathname (if any) of the ln program. After Configure runs,
2510 the value is reset to a plain "ln" and is not useful.
2513 This variable holds the name of the command to make
2514 symbolic links (if they are supported). It can be used
2515 in the Makefile. It is either 'ln -s' or 'ln'
2517 locincpth (ccflags.U):
2518 This variable contains a list of additional directories to be
2519 searched by the compiler. The appropriate '-I' directives will
2520 be added to ccflags. This is intended to simplify setting
2521 local directories from the Configure command line.
2522 It's not much, but it parallels the loclibpth stuff in libpth.U.
2524 loclibpth (libpth.U):
2525 This variable holds the paths (space-separated) used to find local
2526 libraries. It is prepended to libpth, and is intended to be easily
2527 set from the command line.
2529 longdblsize (d_longdbl.U):
2530 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2531 indicates to the C program how many bytes there are in a long double,
2532 if this system supports long doubles.
2534 longlongsize (d_longlong.U):
2535 This variable contains the value of the LONGLONGSIZE symbol, which
2536 indicates to the C program how many bytes there are in a long long,
2537 if this system supports long long.
2539 longsize (intsize.U):
2540 This variable contains the value of the LONGSIZE symbol, which
2541 indicates to the C program how many bytes there are in a long.
2544 This variable is defined but not used by Configure.
2545 The value is a plain '' and is not useful.
2548 This variable is defined but not used by Configure.
2549 The value is a plain '' and is not useful.
2552 This variable is used internally by Configure to determine the
2553 full pathname (if any) of the ls program. After Configure runs,
2554 the value is reset to a plain "ls" and is not useful.
2556 lseeksize (lseektype.U):
2557 This variable defines lseektype to be something like off_t, long,
2558 or whatever type is used to declare lseek offset's type in the
2559 kernel (which also appears to be lseek's return type).
2561 lseektype (lseektype.U):
2562 This variable defines lseektype to be something like off_t, long,
2563 or whatever type is used to declare lseek offset's type in the
2564 kernel (which also appears to be lseek's return type).
2567 This variable is defined but not used by Configure.
2568 The value is a plain '' and is not useful.
2571 This variable is defined but not used by Configure.
2572 The value is a plain '' and is not useful.
2575 This variable is used internally by Configure to determine the
2576 full pathname (if any) of the make program. After Configure runs,
2577 the value is reset to a plain "make" and is not useful.
2579 make_set_make (make.U):
2580 Some versions of 'make' set the variable MAKE. Others do not.
2581 This variable contains the string to be included in Makefile.SH
2582 so that MAKE is set if needed, and not if not needed.
2583 Possible values are:
2584 make_set_make='#' # If your make program handles this for you,
2585 make_set_make="MAKE=$make" # if it doesn't.
2586 I used a comment character so that we can distinguish a
2587 'set' value (from a previous config.sh or Configure '-D' option)
2588 from an uncomputed value.
2590 mallocobj (mallocsrc.U):
2591 This variable contains the name of the malloc.o that this package
2592 generates, if that malloc.o is preferred over the system malloc.
2593 Otherwise the value is null. This variable is intended for generating
2594 Makefiles. See mallocsrc.
2596 mallocsrc (mallocsrc.U):
2597 This variable contains the name of the malloc.c that comes with
2598 the package, if that malloc.c is preferred over the system malloc.
2599 Otherwise the value is null. This variable is intended for generating
2602 malloctype (mallocsrc.U):
2603 This variable contains the kind of ptr returned by malloc and realloc.
2605 man1dir (man1dir.U):
2606 This variable contains the name of the directory in which manual
2607 source pages are to be put. It is the responsibility of the
2608 Makefile.SH to get the value of this into the proper command.
2609 You must be prepared to do the ~name expansion yourself.
2611 man1direxp (man1dir.U):
2612 This variable is the same as the man1dir variable, but is filename
2613 expanded at configuration time, for convenient use in makefiles.
2615 man1ext (man1dir.U):
2616 This variable contains the extension that the manual page should
2617 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2620 man3dir (man3dir.U):
2621 This variable contains the name of the directory in which manual
2622 source pages are to be put. It is the responsibility of the
2623 Makefile.SH to get the value of this into the proper command.
2624 You must be prepared to do the ~name expansion yourself.
2626 man3direxp (man3dir.U):
2627 This variable is the same as the man3dir variable, but is filename
2628 expanded at configuration time, for convenient use in makefiles.
2630 man3ext (man3dir.U):
2631 This variable contains the extension that the manual page should
2632 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2636 This variable is used internally by Configure to determine the
2637 full pathname (if any) of the Mcc program. After Configure runs,
2638 the value is reset to a plain "Mcc" and is not useful.
2641 This variable contains a flag which will tell the C compiler and loader
2642 to produce a program running with a medium memory model. If the
2643 medium model is not supported, contains the flag to produce large
2644 model programs. It is up to the Makefile to use this.
2646 mips_type (usrinc.U):
2647 This variable holds the environment type for the mips system.
2648 Possible values are "BSD 4.3" and "System V".
2651 This variable is used internally by Configure to determine the
2652 full pathname (if any) of the mkdir program. After Configure runs,
2653 the value is reset to a plain "mkdir" and is not useful.
2655 mmaptype (d_mmap.U):
2656 This symbol contains the type of pointer returned by mmap()
2657 (and simultaneously the type of the first argument).
2658 It can be 'void *' or 'caddr_t'.
2661 This variable contains the list of memory models supported by this
2662 system. Possible component values are none, split, unsplit, small,
2663 medium, large, and huge. The component values are space separated.
2665 modetype (modetype.U):
2666 This variable defines modetype to be something like mode_t,
2667 int, unsigned short, or whatever type is used to declare file
2668 modes for system calls.
2671 This variable is used internally by Configure to determine the
2672 full pathname (if any) of the more program. After Configure runs,
2673 the value is reset to a plain "more" and is not useful.
2675 multiarch (multiarch.U):
2676 This variable conditionally defines the MULTIARCH symbol
2677 which signifies the presence of multiplatform files.
2678 This is normally set by hints files.
2681 This variable is defined but not used by Configure.
2682 The value is a plain '' and is not useful.
2684 myarchname (archname.U):
2685 This variable holds the architecture name computed by Configure in
2686 a previous run. It is not intended to be perused by any user and
2687 should never be set in a hint file.
2689 mydomain (myhostname.U):
2690 This variable contains the eventual value of the MYDOMAIN symbol,
2691 which is the domain of the host the program is going to run on.
2692 The domain must be appended to myhostname to form a complete host name.
2693 The dot comes with mydomain, and need not be supplied by the program.
2695 myhostname (myhostname.U):
2696 This variable contains the eventual value of the MYHOSTNAME symbol,
2697 which is the name of the host the program is going to run on.
2698 The domain is not kept with hostname, but must be gotten from mydomain.
2699 The dot comes with mydomain, and need not be supplied by the program.
2701 myuname (Oldconfig.U):
2702 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2703 pseudo variables assignments in the output are stripped, thank you. The
2704 whole thing is then lower-cased.
2707 This variable contains the '-n' flag if that is what causes the echo
2708 command to suppress newline. Otherwise it is null. Correct usage is
2709 $echo $n "prompt for a question: $c".
2711 netdb_hlen_type (netdbtype.U):
2712 This variable holds the type used for the 2nd argument to
2713 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2714 This is only useful if you have gethostbyaddr(), naturally.
2716 netdb_host_type (netdbtype.U):
2717 This variable holds the type used for the 1st argument to
2718 gethostbyaddr(). Usually, this is char * or void *, possibly
2719 with or without a const prefix.
2720 This is only useful if you have gethostbyaddr(), naturally.
2722 netdb_name_type (netdbtype.U):
2723 This variable holds the type used for the argument to
2724 gethostbyname(). Usually, this is char * or const char *.
2725 This is only useful if you have gethostbyname(), naturally.
2727 netdb_net_type (netdbtype.U):
2728 This variable holds the type used for the 1st argument to
2729 getnetbyaddr(). Usually, this is int or long.
2730 This is only useful if you have getnetbyaddr(), naturally.
2733 This variable is used internally by Configure to determine the
2734 full pathname (if any) of the nm program. After Configure runs,
2735 the value is reset to a plain "nm" and is not useful.
2738 This variable holds the options that may be necessary for nm.
2740 nm_so_opt (usenm.U):
2741 This variable holds the options that may be necessary for nm
2742 to work on a shared library but that can not be used on an
2743 archive library. Currently, this is only used by Linux, where
2744 nm --dynamic is *required* to get symbols from an ELF library which
2745 has been stripped, but nm --dynamic is *fatal* on an archive library.
2746 Maybe Linux should just always set usenm=false.
2748 nonxs_ext (Extensions.U):
2749 This variable holds a list of all non-xs extensions included
2750 in the package. All of them will be built.
2753 This variable is used internally by Configure to determine the
2754 full pathname (if any) of the nroff program. After Configure runs,
2755 the value is reset to a plain "nroff" and is not useful.
2758 This variable is the size of an NV in bytes.
2761 This variable contains the C type used for Perl's NV.
2763 o_nonblock (nblock_io.U):
2764 This variable bears the symbol value to be used during open() or fcntl()
2765 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2766 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2767 but that is only supported by some devices.
2770 This is an old synonym for _o.
2772 old_pthread_create_joinable (d_pthrattrj.U):
2773 This variable defines the constant to use for creating joinable
2774 (aka undetached) pthreads. Unused if pthread.h defines
2775 PTHREAD_CREATE_JOINABLE. If used, possible values are
2776 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2778 optimize (ccflags.U):
2779 This variable contains any optimizer/debugger flag that should be used.
2780 It is up to the Makefile to use it.
2782 orderlib (orderlib.U):
2783 This variable is "true" if the components of libraries must be ordered
2784 (with `lorder $* | tsort`) before placing them in an archive. Set to
2785 "false" if ranlib or ar can generate random libraries.
2787 osname (Oldconfig.U):
2788 This variable contains the operating system name (e.g. sunos,
2789 solaris, hpux, etc.). It can be useful later on for setting
2790 defaults. Any spaces are replaced with underscores. It is set
2791 to a null string if we can't figure it out.
2793 osvers (Oldconfig.U):
2794 This variable contains the operating system version (e.g.
2795 4.1.3, 5.2, etc.). It is primarily used for helping select
2796 an appropriate hints file, but might be useful elsewhere for
2797 setting defaults. It is set to '' if we can't figure it out.
2798 We try to be flexible about how much of the version number
2799 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2800 same for this package, hints files might just be os_4.0 or
2801 os_4.1, etc., not keeping separate files for each little release.
2803 otherlibdirs (otherlibdirs.U):
2804 This variable contains a colon-separated set of paths for the perl
2805 binary to search for additional library files or modules.
2806 These directories will be tacked to the end of @INC.
2807 Perl will automatically search below each path for version-
2808 and architecture-specific directories. See inc_version_list
2810 A value of ' ' means 'none' and is used to preserve this value
2811 for the next run through Configure.
2813 package (package.U):
2814 This variable contains the name of the package being constructed.
2815 It is primarily intended for the use of later Configure units.
2818 This variable contains the name of the preferred pager on the system.
2819 Usual values are (the full pathnames of) more, less, pg, or cat.
2822 This variable contains a command that produces the text of the
2823 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2824 "ypcat passwd" when NIS is used.
2825 On some systems, such as os390, there may be no equivalent
2826 command, in which case this variable is unset.
2828 patchlevel (patchlevel.U):
2829 The patchlevel level of this package.
2830 The value of patchlevel comes from the patchlevel.h file.
2831 In a version number such as 5.6.1, this is the "6".
2832 In patchlevel.h, this is referred to as "PERL_VERSION".
2835 This is an old synonym for p_ in Head.U, the character
2836 used to separate elements in the command shell search PATH.
2839 This variable contains the full path (if any) to a previously
2840 installed perl5.005 or later suitable for running the script
2841 to determine inc_version_list.
2844 This variable is defined but not used by Configure.
2845 The value is a plain '' and is not useful.
2847 PERL_REVISION (Oldsyms.U):
2848 In a Perl version number such as 5.6.2, this is the 5.
2849 This value is manually set in patchlevel.h
2851 PERL_SUBVERSION (Oldsyms.U):
2852 In a Perl version number such as 5.6.2, this is the 2.
2853 Values greater than 50 represent potentially unstable
2854 development subversions.
2855 This value is manually set in patchlevel.h
2857 PERL_VERSION (Oldsyms.U):
2858 In a Perl version number such as 5.6.2, this is the 6.
2859 This value is manually set in patchlevel.h
2861 perladmin (perladmin.U):
2862 Electronic mail address of the perl5 administrator.
2864 perlpath (perlpath.U):
2865 This variable contains the eventual value of the PERLPATH symbol,
2866 which contains the name of the perl interpreter to be used in
2867 shell scripts and in the "eval 'exec'" idiom.
2870 This variable is used internally by Configure to determine the
2871 full pathname (if any) of the pg program. After Configure runs,
2872 the value is reset to a plain "pg" and is not useful.
2874 phostname (myhostname.U):
2875 This variable contains the eventual value of the PHOSTNAME symbol,
2876 which is a command that can be fed to popen() to get the host name.
2877 The program should probably not presume that the domain is or isn't
2880 pidtype (pidtype.U):
2881 This variable defines PIDTYPE to be something like pid_t, int,
2882 ushort, or whatever type is used to declare process ids in the kernel.
2885 Holds the private path used by Configure to find out the libraries.
2886 Its value is prepend to libpth. This variable takes care of special
2887 machines, like the mips. Usually, it should be empty.
2889 pm_apiversion (xs_apiversion.U):
2890 This variable contains the version of the oldest perl
2891 compatible with the present perl. (That is, pure perl modules
2892 written for $pm_apiversion will still work for the current
2893 version). perl.c:incpush() and lib/lib.pm will automatically
2894 search in $sitelib for older directories across major versions
2895 back to pm_apiversion. This is only useful if you have a perl
2896 library directory tree structured like the default one. The
2897 versioned site_perl library was introduced in 5.005, so that's
2898 the default setting for this variable. It's hard to imagine
2899 it changing before Perl6. It is included here for symmetry
2900 with xs_apiveprsion -- the searching algorithms will
2901 (presumably) be similar.
2902 See the INSTALL file for how this works.
2905 This variable is defined but not used by Configure.
2906 The value is a plain '' and is not useful.
2909 This variable is defined but not used by Configure.
2910 The value is a plain '' and is not useful.
2913 This variable holds the name of the directory below which the
2914 user will install the package. Usually, this is /usr/local, and
2915 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2916 man pages in /usr/local/man, etc. It is only used to set defaults
2917 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2919 prefixexp (prefix.U):
2920 This variable holds the full absolute path of the directory below
2921 which the user will install the package. Derived from prefix.
2923 privlib (privlib.U):
2924 This variable contains the eventual value of the PRIVLIB symbol,
2925 which is the name of the private library for this package. It may
2926 have a ~ on the front. It is up to the makefile to eventually create
2927 this directory while performing installation (with ~ substitution).
2929 privlibexp (privlib.U):
2930 This variable is the ~name expanded version of privlib, so that you
2931 may use it directly in Makefiles or shell scripts.
2933 prototype (prototype.U):
2934 This variable holds the eventual value of CAN_PROTOTYPE, which
2935 indicates the C compiler can handle funciton prototypes.
2937 ptrsize (ptrsize.U):
2938 This variable contains the value of the PTRSIZE symbol, which
2939 indicates to the C program how many bytes there are in a pointer.
2941 quadkind (quadtype.U):
2942 This variable, if defined, encodes the type of a quad:
2943 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2945 quadtype (quadtype.U):
2946 This variable defines Quad_t to be something like long, int,
2947 long long, int64_t, or whatever type is used for 64-bit integers.
2949 randbits (randfunc.U):
2950 Indicates how many bits are produced by the function used to
2951 generate normalized random numbers.
2953 randfunc (randfunc.U):
2954 Indicates the name of the random number function to use.
2955 Values include drand48, random, and rand. In C programs,
2956 the 'Drand01' macro is defined to generate uniformly distributed
2957 random numbers over the range [0., 1.[ (see drand01 and nrand).
2959 randseedtype (randfunc.U):
2960 Indicates the type of the argument of the seedfunc.
2962 ranlib (orderlib.U):
2963 This variable is set to the pathname of the ranlib program, if it is
2964 needed to generate random libraries. Set to ":" if ar can generate
2965 random libraries or if random libraries are not supported
2967 rd_nodata (nblock_io.U):
2968 This variable holds the return code from read() when no data is
2969 present. It should be -1, but some systems return 0 when O_NDELAY is
2970 used, which is a shame because you cannot make the difference between
2971 no data and an EOF.. Sigh!
2973 revision (patchlevel.U):
2974 The value of revision comes from the patchlevel.h file.
2975 In a version number such as 5.6.1, this is the "5".
2976 In patchlevel.h, this is referred to as "PERL_REVISION".
2979 This variable is used internally by Configure to determine the
2980 full pathname (if any) of the rm program. After Configure runs,
2981 the value is reset to a plain "rm" and is not useful.
2984 This variable is defined but not used by Configure.
2985 The value is a plain '' and is not useful.
2988 This variable contains 'true' or 'false' depending whether the
2989 nm extraction should be performed or not, according to the value
2990 of usenm and the flags on the Configure command line.
2992 sched_yield (d_pthread_y.U):
2993 This variable defines the way to yield the execution
2994 of the current thread.
2996 scriptdir (scriptdir.U):
2997 This variable holds the name of the directory in which the user wants
2998 to put publicly scripts for the package in question. It is either
2999 the same directory as for binaries, or a special one that can be
3000 mounted across different architectures, like /usr/share. Programs
3001 must be prepared to deal with ~name expansion.
3003 scriptdirexp (scriptdir.U):
3004 This variable is the same as scriptdir, but is filename expanded
3005 at configuration time, for programs not wanting to bother with it.
3008 This variable is used internally by Configure to determine the
3009 full pathname (if any) of the sed program. After Configure runs,
3010 the value is reset to a plain "sed" and is not useful.
3012 seedfunc (randfunc.U):
3013 Indicates the random number generating seed function.
3014 Values include srand48, srandom, and srand.
3016 selectminbits (selectminbits.U):
3017 This variable holds the minimum number of bits operated by select.
3018 That is, if you do select(n, ...), how many bits at least will be
3019 cleared in the masks if some activity is detected. Usually this
3020 is either n or 32*ceil(n/32), especially many little-endians do
3021 the latter. This is only useful if you have select(), naturally.
3023 selecttype (selecttype.U):
3024 This variable holds the type used for the 2nd, 3rd, and 4th
3025 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3026 is defined, and 'int *' otherwise. This is only useful if you
3027 have select(), naturally.
3030 This variable is defined but not used by Configure.
3031 The value is a plain '' and is not useful.
3034 This variable contains the full pathname of the shell used
3035 on this system to execute Bourne shell scripts. Usually, this will be
3036 /bin/sh, though it's possible that some systems will have /bin/ksh,
3037 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3039 This unit comes before Options.U, so you can't set sh with a '-D'
3040 option, though you can override this (and startsh)
3041 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3044 This variable is defined but not used by Configure.
3045 The value is a plain '' and is not useful.
3047 sharpbang (spitshell.U):
3048 This variable contains the string #! if this system supports that
3051 shmattype (d_shmat.U):
3052 This symbol contains the type of pointer returned by shmat().
3053 It can be 'void *' or 'char *'.
3055 shortsize (intsize.U):
3056 This variable contains the value of the SHORTSIZE symbol which
3057 indicates to the C program how many bytes there are in a short.
3059 shrpenv (libperl.U):
3060 If the user builds a shared libperl.so, then we need to tell the
3061 'perl' executable where it will be able to find the installed libperl.so.
3062 One way to do this on some systems is to set the environment variable
3063 LD_RUN_PATH to the directory that will be the final location of the
3064 shared libperl.so. The makefile can use this with something like
3065 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3067 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3070 See the main perl Makefile.SH for actual working usage.
3071 Alternatively, we might be able to use a command line option such
3072 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3073 $archlibexp/CORE (Linux).
3075 shsharp (spitshell.U):
3076 This variable tells further Configure units whether your sh can
3079 sig_count (sig_name.U):
3080 This variable holds a number larger than the largest valid
3081 signal number. This is usually the same as the NSIG macro.
3083 sig_name (sig_name.U):
3084 This variable holds the signal names, space separated. The leading
3085 SIG in signal name is removed. A ZERO is prepended to the
3086 list. This is currently not used.
3088 sig_name_init (sig_name.U):
3089 This variable holds the signal names, enclosed in double quotes and
3090 separated by commas, suitable for use in the SIG_NAME definition
3091 below. A "ZERO" is prepended to the list, and the list is
3092 terminated with a plain 0. The leading SIG in signal names
3093 is removed. See sig_num.
3095 sig_num (sig_name.U):
3096 This variable holds the signal numbers, space separated. A ZERO is
3097 prepended to the list (corresponding to the fake SIGZERO), and
3098 the list is terminated with a 0. Those numbers correspond to
3099 the value of the signal listed in the same place within the
3102 sig_num_init (sig_name.U):
3103 This variable holds the signal numbers, enclosed in double quotes and
3104 separated by commas, suitable for use in the SIG_NUM definition
3105 below. A "ZERO" is prepended to the list, and the list is
3106 terminated with a plain 0.
3108 signal_t (d_voidsig.U):
3109 This variable holds the type of the signal handler (void or int).
3111 sitearch (sitearch.U):
3112 This variable contains the eventual value of the SITEARCH symbol,
3113 which is the name of the private library for this package. It may
3114 have a ~ on the front. It is up to the makefile to eventually create
3115 this directory while performing installation (with ~ substitution).
3116 The standard distribution will put nothing in this directory.
3117 After perl has been installed, users may install their own local
3118 architecture-dependent modules in this directory with
3119 MakeMaker Makefile.PL
3120 or equivalent. See INSTALL for details.
3122 sitearchexp (sitearch.U):
3123 This variable is the ~name expanded version of sitearch, so that you
3124 may use it directly in Makefiles or shell scripts.
3126 sitebin (sitebin.U):
3127 This variable holds the name of the directory in which the user wants
3128 to put add-on publicly executable files for the package in question. It
3129 is most often a local directory such as /usr/local/bin. Programs using
3130 this variable must be prepared to deal with ~name substitution.
3131 The standard distribution will put nothing in this directory.
3132 After perl has been installed, users may install their own local
3133 executables in this directory with
3134 MakeMaker Makefile.PL
3135 or equivalent. See INSTALL for details.
3137 sitebinexp (sitebin.U):
3138 This is the same as the sitebin variable, but is filename expanded at
3139 configuration time, for use in your makefiles.
3141 sitelib (sitelib.U):
3142 This variable contains the eventual value of the SITELIB symbol,
3143 which is the name of the private library for this package. It may
3144 have a ~ on the front. It is up to the makefile to eventually create
3145 this directory while performing installation (with ~ substitution).
3146 The standard distribution will put nothing in this directory.
3147 After perl has been installed, users may install their own local
3148 architecture-independent modules in this directory with
3149 MakeMaker Makefile.PL
3150 or equivalent. See INSTALL for details.
3152 sitelib_stem (sitelib.U):
3153 This variable is $sitelibexp with any trailing version-specific component
3154 removed. The elements in inc_version_list (inc_version_list.U) can
3155 be tacked onto this variable to generate a list of directories to search.
3157 sitelibexp (sitelib.U):
3158 This variable is the ~name expanded version of sitelib, so that you
3159 may use it directly in Makefiles or shell scripts.
3161 siteprefix (siteprefix.U):
3162 This variable holds the full absolute path of the directory below
3163 which the user will install add-on packages.
3164 See INSTALL for usage and examples.
3166 siteprefixexp (siteprefix.U):
3167 This variable holds the full absolute path of the directory below
3168 which the user will install add-on packages. Derived from siteprefix.
3170 sizesize (sizesize.U):
3171 This variable contains the size of a sizetype in bytes.
3173 sizetype (sizetype.U):
3174 This variable defines sizetype to be something like size_t,
3175 unsigned long, or whatever type is used to declare length
3176 parameters for string functions.
3179 This variable is defined but not used by Configure.
3180 The value is a plain '' and is not useful.
3183 This variable is defined but not used by Configure.
3184 The value is a plain '' and is not useful.
3187 This variable contains a flag which will tell the C compiler and loader
3188 to produce a program running with a small memory model. It is up to
3189 the Makefile to use this.
3192 This variable holds the extension used to identify shared libraries
3193 (also known as shared objects) on the system. Usually set to 'so'.
3195 sockethdr (d_socket.U):
3196 This variable has any cpp '-I' flags needed for socket support.
3198 socketlib (d_socket.U):
3199 This variable has the names of any libraries needed for socket support.
3201 socksizetype (socksizetype.U):
3202 This variable holds the type used for the size argument
3203 for various socket calls like accept. Usual values include
3204 socklen_t, size_t, and int.
3207 This variable is used internally by Configure to determine the
3208 full pathname (if any) of the sort program. After Configure runs,
3209 the value is reset to a plain "sort" and is not useful.
3211 spackage (package.U):
3212 This variable contains the name of the package being constructed,
3213 with the first letter uppercased, i.e. suitable for starting
3216 spitshell (spitshell.U):
3217 This variable contains the command necessary to spit out a runnable
3218 shell on this system. It is either cat or a grep '-v' for # comments.
3221 This variable contains a flag which will tell the C compiler and loader
3222 to produce a program that will run in separate I and D space, for those
3223 machines that support separation of instruction and data space. It is
3224 up to the Makefile to use this.
3226 sPRId64 (quadfio.U):
3227 This variable, if defined, contains the string used by stdio to
3228 format 64-bit decimal numbers (format 'd') for output.
3230 sPRIeldbl (longdblfio.U):
3231 This variable, if defined, contains the string used by stdio to
3232 format long doubles (format 'e') for output.
3234 sPRIEldbl (longdblfio.U):
3235 This variable, if defined, contains the string used by stdio to
3236 format long doubles (format 'E') for output.
3238 sPRIfldbl (longdblfio.U):
3239 This variable, if defined, contains the string used by stdio to
3240 format long doubles (format 'f') for output.
3242 sPRIFldbl (longdblfio.U):
3243 This variable, if defined, contains the string used by stdio to
3244 format long doubles (format 'F') for output.
3246 sPRIgldbl (longdblfio.U):
3247 This variable, if defined, contains the string used by stdio to
3248 format long doubles (format 'g') for output.
3250 sPRIGldbl (longdblfio.U):
3251 This variable, if defined, contains the string used by stdio to
3252 format long doubles (format 'G') for output.
3254 sPRIi64 (quadfio.U):
3255 This variable, if defined, contains the string used by stdio to
3256 format 64-bit decimal numbers (format 'i') for output.
3258 sPRIo64 (quadfio.U):
3259 This variable, if defined, contains the string used by stdio to
3260 format 64-bit octal numbers (format 'o') for output.
3262 sPRIu64 (quadfio.U):
3263 This variable, if defined, contains the string used by stdio to
3264 format 64-bit unsigned decimal numbers (format 'u') for output.
3266 sPRIx64 (quadfio.U):
3267 This variable, if defined, contains the string used by stdio to
3268 format 64-bit hexadecimal numbers (format 'x') for output.
3270 sPRIX64 (quadfio.U):
3271 This variable, if defined, contains the string used by stdio to
3272 format 64-bit hExADECimAl numbers (format 'X') for output.
3275 This variable holds the path to the package source. It is up to
3276 the Makefile to use this variable and set VPATH accordingly to
3277 find the sources remotely.
3279 ssizetype (ssizetype.U):
3280 This variable defines ssizetype to be something like ssize_t,
3281 long or int. It is used by functions that return a count
3282 of bytes or an error condition. It must be a signed type.
3283 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3285 startperl (startperl.U):
3286 This variable contains the string to put on the front of a perl
3287 script to make sure (hopefully) that it runs with perl and not some
3288 shell. Of course, that leading line must be followed by the classical
3290 eval 'exec perl -S $0 ${1+"$@"}'
3291 if $running_under_some_shell;
3292 to guarantee perl startup should the shell execute the script. Note
3293 that this magic incatation is not understood by csh.
3295 startsh (startsh.U):
3296 This variable contains the string to put on the front of a shell
3297 script to make sure (hopefully) that it runs with sh and not some
3300 static_ext (Extensions.U):
3301 This variable holds a list of XS extension files we want to
3302 link statically into the package. It is used by Makefile.
3304 stdchar (stdchar.U):
3305 This variable conditionally defines STDCHAR to be the type of char
3306 used in stdio.h. It has the values "unsigned char" or "char".
3308 stdio_base (d_stdstdio.U):
3309 This variable defines how, given a FILE pointer, fp, to access the
3310 _base field (or equivalent) of stdio.h's FILE structure. This will
3311 be used to define the macro FILE_base(fp).
3313 stdio_bufsiz (d_stdstdio.U):
3314 This variable defines how, given a FILE pointer, fp, to determine
3315 the number of bytes store in the I/O buffer pointer to by the
3316 _base field (or equivalent) of stdio.h's FILE structure. This will
3317 be used to define the macro FILE_bufsiz(fp).
3319 stdio_cnt (d_stdstdio.U):
3320 This variable defines how, given a FILE pointer, fp, to access the
3321 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3322 be used to define the macro FILE_cnt(fp).
3324 stdio_filbuf (d_stdstdio.U):
3325 This variable defines how, given a FILE pointer, fp, to tell
3326 stdio to refill it's internal buffers (?). This will
3327 be used to define the macro FILE_filbuf(fp).
3329 stdio_ptr (d_stdstdio.U):
3330 This variable defines how, given a FILE pointer, fp, to access the
3331 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3332 be used to define the macro FILE_ptr(fp).
3334 stdio_stream_array (stdio_streams.U):
3335 This variable tells the name of the array holding the stdio streams.
3336 Usual values include _iob, __iob, and __sF.
3338 strings (i_string.U):
3339 This variable holds the full path of the string header that will be
3340 used. Typically /usr/include/string.h or /usr/include/strings.h.
3343 This variable is defined but not used by Configure.
3344 The value is a plain '' and is not useful.
3346 subversion (patchlevel.U):
3347 The subversion level of this package.
3348 The value of subversion comes from the patchlevel.h file.
3349 In a version number such as 5.6.1, this is the "1".
3350 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3351 This is unique to perl.
3354 This variable holds the place where the manual is located on this
3355 system. It is not the place where the user wants to put his manual
3356 pages. Rather it is the place where Configure may look to find manual
3357 for unix commands (section 1 of the manual usually). See mansrc.
3360 This variable is defined but not used by Configure.
3361 The value is a plain '' and is not useful.
3364 This variable is defined but not used by Configure.
3365 The value is a plain '' and is not useful.
3368 This variable is defined but not used by Configure.
3369 The value is a plain '' and is not useful.
3372 This variable is defined but not used by Configure.
3373 The value is a plain '' and is not useful.
3376 This variable is used internally by Configure to determine the
3377 full pathname (if any) of the test program. After Configure runs,
3378 the value is reset to a plain "test" and is not useful.
3380 timeincl (i_time.U):
3381 This variable holds the full path of the included time header(s).
3383 timetype (d_time.U):
3384 This variable holds the type returned by time(). It can be long,
3385 or time_t on BSD sites (in which case <sys/types.h> should be
3386 included). Anyway, the type Time_t should be used.
3389 This variable is used internally by Configure to determine the
3390 full pathname (if any) of the touch program. After Configure runs,
3391 the value is reset to a plain "touch" and is not useful.
3394 This variable is used internally by Configure to determine the
3395 full pathname (if any) of the tr program. After Configure runs,
3396 the value is reset to a plain "tr" and is not useful.
3399 This variable contains the value to be passed to the tr(1)
3400 command to transliterate a newline. Typical values are
3401 '\012' and '\n'. This is needed for EBCDIC systems where
3402 newline is not necessarily '\012'.
3405 This variable is defined but not used by Configure.
3406 The value is a plain '' and is not useful.
3409 This variable is the size of an U16 in bytes.
3412 This variable contains the C type used for Perl's U16.
3415 This variable is the size of an U32 in bytes.
3418 This variable contains the C type used for Perl's U32.
3421 This variable is the size of an U64 in bytes.
3424 This variable contains the C type used for Perl's U64.
3427 This variable is the size of an U8 in bytes.
3430 This variable contains the C type used for Perl's U8.
3433 This variable contains the format string used for printing a Uid_t.
3435 uidsign (uidsign.U):
3436 This variable contains the signedness of a uidtype.
3437 1 for unsigned, -1 for signed.
3439 uidsize (uidsize.U):
3440 This variable contains the size of a uidtype in bytes.
3442 uidtype (uidtype.U):
3443 This variable defines Uid_t to be something like uid_t, int,
3444 ushort, or whatever type is used to declare user ids in the kernel.
3447 This variable is used internally by Configure to determine the
3448 full pathname (if any) of the uname program. After Configure runs,
3449 the value is reset to a plain "uname" and is not useful.
3452 This variable is used internally by Configure to determine the
3453 full pathname (if any) of the uniq program. After Configure runs,
3454 the value is reset to a plain "uniq" and is not useful.
3456 uquadtype (quadtype.U):
3457 This variable defines Uquad_t to be something like unsigned long,
3458 unsigned int, unsigned long long, uint64_t, or whatever type is
3459 used for 64-bit integers.
3461 use5005threads (usethreads.U):
3462 This variable conditionally defines the USE_5005THREADS symbol,
3463 and indicates that Perl should be built to use the 5.005-based
3464 threading implementation.
3466 use64bitall (use64bits.U):
3467 This variable conditionally defines the USE_64_BIT_ALL symbol,
3468 and indicates that 64-bit integer types should be used
3469 when available. The maximal possible
3470 64-bitness is employed: LP64 or ILP64, meaning that you will
3471 be able to use more than 2 gigabytes of memory. This mode is
3472 even more binary incompatible than USE_64_BIT_INT. You may not
3473 be able to run the resulting executable in a 32-bit CPU at all or
3474 you may need at least to reboot your OS to 64-bit mode.
3476 use64bitint (use64bits.U):
3477 This variable conditionally defines the USE_64_BIT_INT symbol,
3478 and indicates that 64-bit integer types should be used
3479 when available. The minimal possible 64-bitness
3480 is employed, just enough to get 64-bit integers into Perl.
3481 This may mean using for example "long longs", while your memory
3482 may still be limited to 2 gigabytes.
3485 This variable indicates if the system supports dynamic
3486 loading of some sort. See also dlsrc and dlobj.
3488 useithreads (usethreads.U):
3489 This variable conditionally defines the USE_ITHREADS symbol,
3490 and indicates that Perl should be built to use the interpreter-based
3491 threading implementation.
3493 uselargefiles (uselfs.U):
3494 This variable conditionally defines the USE_LARGE_FILES symbol,
3495 and indicates that large file interfaces should be used when
3498 uselongdouble (uselongdbl.U):
3499 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3500 and indicates that long doubles should be used when available.
3502 usemorebits (usemorebits.U):
3503 This variable conditionally defines the USE_MORE_BITS symbol,
3504 and indicates that explicit 64-bit interfaces and long doubles
3505 should be used when available.
3507 usemultiplicity (usemultiplicity.U):
3508 This variable conditionally defines the MULTIPLICITY symbol,
3509 and indicates that Perl should be built to use multiplicity.
3511 usemymalloc (mallocsrc.U):
3512 This variable contains y if the malloc that comes with this package
3513 is desired over the system's version of malloc. People often include
3514 special versions of malloc for effiency, but such versions are often
3515 less portable. See also mallocsrc and mallocobj.
3516 If this is 'y', then -lmalloc is removed from $libs.
3519 This variable contains 'true' or 'false' depending whether the
3520 nm extraction is wanted or not.
3522 useopcode (Extensions.U):
3523 This variable holds either 'true' or 'false' to indicate
3524 whether the Opcode extension should be used. The sole
3525 use for this currently is to allow an easy mechanism
3526 for users to skip the Opcode extension from the Configure
3529 useperlio (useperlio.U):
3530 This variable conditionally defines the USE_PERLIO symbol,
3531 and indicates that the PerlIO abstraction should be
3534 useposix (Extensions.U):
3535 This variable holds either 'true' or 'false' to indicate
3536 whether the POSIX extension should be used. The sole
3537 use for this currently is to allow an easy mechanism
3538 for hints files to indicate that POSIX will not compile
3539 on a particular system.
3542 This variable is set to true when the user agrees to use sfio.
3543 It is set to false when sfio is not available or when the user
3544 explicitely requests not to use sfio. It is here primarily so
3545 that command-line settings can override the auto-detection of
3546 d_sfio without running into a "WHOA THERE".
3548 useshrplib (libperl.U):
3549 This variable is set to 'yes' if the user wishes
3550 to build a shared libperl, and 'no' otherwise.
3552 usesocks (usesocks.U):
3553 This variable conditionally defines the USE_SOCKS symbol,
3554 and indicates that Perl should be built to use SOCKS.
3556 usethreads (usethreads.U):
3557 This variable conditionally defines the USE_THREADS symbol,
3558 and indicates that Perl should be built to use threads.
3560 usevendorprefix (vendorprefix.U):
3561 This variable tells whether the vendorprefix
3562 and consequently other vendor* paths are in use.
3564 usevfork (d_vfork.U):
3565 This variable is set to true when the user accepts to use vfork.
3566 It is set to false when no vfork is available or when the user
3567 explicitely requests not to use vfork.
3570 This variable holds the path of the include files, which is
3571 usually /usr/include. It is mainly used by other Configure units.
3574 This variable is defined but not used by Configure.
3575 The value is a plain '' and is not useful.
3577 uvoformat (perlxvf.U):
3578 This variable contains the format string used for printing
3579 a Perl UV as an unsigned octal integer.
3582 This variable is the size of a UV in bytes.
3585 This variable contains the C type used for Perl's UV.
3587 uvuformat (perlxvf.U):
3588 This variable contains the format string used for printing
3589 a Perl UV as an unsigned decimal integer.
3591 uvxformat (perlxvf.U):
3592 This variable contains the format string used for printing
3593 a Perl UV as an unsigned hexadecimal integer.
3595 vendorarch (vendorarch.U):
3596 This variable contains the value of the PERL_VENDORARCH symbol.
3597 It may have a ~ on the front.
3598 The standard distribution will put nothing in this directory.
3599 Vendors who distribute perl may wish to place their own
3600 architecture-dependent modules and extensions in this directory with
3601 MakeMaker Makefile.PL INSTALLDIRS=vendor
3602 or equivalent. See INSTALL for details.
3604 vendorarchexp (vendorarch.U):
3605 This variable is the ~name expanded version of vendorarch, so that you
3606 may use it directly in Makefiles or shell scripts.
3608 vendorbin (vendorbin.U):
3609 This variable contains the eventual value of the VENDORBIN symbol.
3610 It may have a ~ on the front.
3611 The standard distribution will put nothing in this directory.
3612 Vendors who distribute perl may wish to place additional
3613 binaries in this directory with
3614 MakeMaker Makefile.PL INSTALLDIRS=vendor
3615 or equivalent. See INSTALL for details.
3617 vendorbinexp (vendorbin.U):
3618 This variable is the ~name expanded version of vendorbin, so that you
3619 may use it directly in Makefiles or shell scripts.
3621 vendorlib (vendorlib.U):
3622 This variable contains the eventual value of the VENDORLIB symbol,
3623 which is the name of the private library for this package.
3624 The standard distribution will put nothing in this directory.
3625 Vendors who distribute perl may wish to place their own
3626 modules in this directory with
3627 MakeMaker Makefile.PL INSTALLDIRS=vendor
3628 or equivalent. See INSTALL for details.
3630 vendorlib_stem (vendorlib.U):
3631 This variable is $vendorlibexp with any trailing version-specific component
3632 removed. The elements in inc_version_list (inc_version_list.U) can
3633 be tacked onto this variable to generate a list of directories to search.
3635 vendorlibexp (vendorlib.U):
3636 This variable is the ~name expanded version of vendorlib, so that you
3637 may use it directly in Makefiles or shell scripts.
3639 vendorprefix (vendorprefix.U):
3640 This variable holds the full absolute path of the directory below
3641 which the vendor will install add-on packages.
3642 See INSTALL for usage and examples.
3644 vendorprefixexp (vendorprefix.U):
3645 This variable holds the full absolute path of the directory below
3646 which the vendor will install add-on packages. Derived from vendorprefix.
3648 version (patchlevel.U):
3649 The full version number of this package, such as 5.6.1 (or 5_6_1).
3650 This combines revision, patchlevel, and subversion to get the
3651 full version number, including any possible subversions.
3652 This is suitable for use as a directory name, and hence is
3653 filesystem dependent.
3656 This variable is defined but not used by Configure.
3657 The value is a plain '' and is not useful.
3659 voidflags (voidflags.U):
3660 This variable contains the eventual value of the VOIDFLAGS symbol,
3661 which indicates how much support of the void type is given by this
3662 compiler. See VOIDFLAGS for more info.
3665 This variable holds extra path (space-separated) used to find
3666 libraries on this platform, for example CPU-specific libraries
3667 (on multi-CPU platforms) may be listed here.
3669 xs_apiversion (xs_apiversion.U):
3670 This variable contains the version of the oldest perl binary
3671 compatible with the present perl. perl.c:incpush() and
3672 lib/lib.pm will automatically search in $sitearch for older
3673 directories across major versions back to xs_apiversion.
3674 This is only useful if you have a perl library directory tree
3675 structured like the default one.
3676 See INSTALL for how this works.
3677 The versioned site_perl directory was introduced in 5.005,
3678 so that is the lowest possible value.
3679 Since this can depend on compile time options (such as
3680 bincompat) it is set by Configure. Other non-default sources
3681 of potential incompatibility, such as multiplicity, threads,
3682 debugging, 64bits, sfio, etc., are not checked for currently,
3683 though in principle we could go snooping around in old
3687 This variable is defined but not used by Configure.
3688 The value is a plain '' and is not useful.
3691 This variable is used internally by Configure to determine the
3692 full pathname (if any) of the zip program. After Configure runs,
3693 the value is reset to a plain "zip" and is not useful.