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 used internally by Configure to determine the
143 full pathname (if any) of the bison program. After Configure runs,
144 the value is reset to a plain "bison" and is not useful.
147 This variable is used internally by Configure to determine the
148 full pathname (if any) of the byacc program. After Configure runs,
149 the value is reset to a plain "byacc" and is not useful.
151 byteorder (byteorder.U):
152 This variable holds the byte order. In the following, larger digits
153 indicate more significance. The variable byteorder is either 4321
154 on a big-endian machine, or 1234 on a little-endian, or 87654321
155 on a Cray ... or 3412 with weird order !
158 This variable contains the \c string if that is what causes the echo
159 command to suppress newline. Otherwise it is null. Correct usage is
160 $echo $n "prompt for a question: $c".
162 castflags (d_castneg.U):
163 This variable contains a flag that precise difficulties the
164 compiler has casting odd floating values to unsigned long:
166 1 = couldn't cast < 0
167 2 = couldn't cast >= 0x80000000
168 4 = couldn't cast in argument expression list
171 This variable is used internally by Configure to determine the
172 full pathname (if any) of the cat program. After Configure runs,
173 the value is reset to a plain "cat" and is not useful.
176 This variable holds the name of a command to execute a C compiler which
177 can resolve multiple global references that happen to have the same
178 name. Usual values are 'cc' and 'gcc'.
179 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
181 cccdlflags (dlsrc.U):
182 This variable contains any special flags that might need to be
183 passed with 'cc -c' to compile modules to be used to create a shared
184 library that will be used for dynamic loading. For hpux, this
185 should be +z. It is up to the makefile to use it.
188 This variable contains any special flags that might need to be
189 passed to cc to link with a shared library for dynamic loading.
190 It is up to the makefile to use it. For sunos 4.1, it should
194 This variable contains any additional C compiler flags desired by
195 the user. It is up to the Makefile to use this.
197 ccflags_uselargefiles (uselfs.U):
198 This variable contains the compiler flags needed by large file builds
199 and added to ccflags by hints files.
202 This can set either by hints files or by Configure. If using
203 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
204 Some platforms, however, make good use of this by storing the
205 flavor of the C compiler being used here. For example if using
206 the Sun WorkShop suite, ccname will be 'workshop'.
208 ccsymbols (Cppsym.U):
209 The variable contains the symbols defined by the C compiler alone.
210 The symbols defined by cpp or by cc when it calls cpp are not in
211 this list, see cppsymbols and cppccsymbols.
212 The list is a space-separated list of symbol=value tokens.
214 ccversion (Checkcc.U):
215 This can set either by hints files or by Configure. If using
216 a (non-gcc) vendor cc, this variable may contain a version for
220 Login name of the person who ran the Configure script and answered the
221 questions. This is used to tag both config.sh and config_h.SH.
223 cf_email (cf_email.U):
224 Electronic mail address of the person who ran Configure. This can be
225 used by units that require the user's e-mail, like MailList.U.
228 Holds the output of the "date" command when the configuration file was
229 produced. This is used to tag both config.sh and config_h.SH.
231 charsize (charsize.U):
232 This variable contains the value of the CHARSIZE symbol, which
233 indicates to the C program how many bytes there are in a character.
236 This variable is defined but not used by Configure.
237 The value is a plain '' and is not useful.
240 This variable is defined but not used by Configure.
241 The value is a plain '' and is not useful.
244 This variable is defined but not used by Configure.
245 The value is a plain '' and is not useful.
247 clocktype (d_times.U):
248 This variable holds the type returned by times(). It can be long,
249 or clock_t on BSD sites (in which case <sys/types.h> should be
253 This variable is used internally by Configure to determine the
254 full pathname (if any) of the comm program. After Configure runs,
255 the value is reset to a plain "comm" and is not useful.
258 This variable is defined but not used by Configure.
259 The value is a plain '' and is not useful.
261 CONFIGDOTSH (Oldsyms.U):
262 This is set to 'true' in config.sh so that a shell script
263 sourcing config.sh can tell if it has been sourced already.
265 contains (contains.U):
266 This variable holds the command to do a grep with a proper return
267 status. On most sane systems it is simply "grep". On insane systems
268 it is a grep followed by a cat followed by a test. This variable
269 is primarily for the use of other Configure units.
272 This variable is used internally by Configure to determine the
273 full pathname (if any) of the cp program. After Configure runs,
274 the value is reset to a plain "cp" and is not useful.
277 This variable is defined but not used by Configure.
278 The value is a plain '' and is not useful.
281 This variable is used internally by Configure to determine the
282 full pathname (if any) of the cpp program. After Configure runs,
283 the value is reset to a plain "cpp" and is not useful.
285 cpp_stuff (cpp_stuff.U):
286 This variable contains an identification of the catenation mechanism
287 used by the C preprocessor.
289 cppccsymbols (Cppsym.U):
290 The variable contains the symbols defined by the C compiler
291 when it calls cpp. The symbols defined by the cc alone or cpp
292 alone are not in this list, see ccsymbols and cppsymbols.
293 The list is a space-separated list of symbol=value tokens.
295 cppflags (ccflags.U):
296 This variable holds the flags that will be passed to the C pre-
297 processor. It is up to the Makefile to use it.
299 cpplast (cppstdin.U):
300 This variable has the same functionality as cppminus, only it applies
301 to cpprun and not cppstdin.
303 cppminus (cppstdin.U):
304 This variable contains the second part of the string which will invoke
305 the C preprocessor on the standard input and produce to standard
306 output. This variable will have the value "-" if cppstdin needs
307 a minus to specify standard input, otherwise the value is "".
310 This variable contains the command which will invoke a C preprocessor
311 on standard input and put the output to stdout. It is guaranteed not
312 to be a wrapper and may be a null string if no preprocessor can be
313 made directly available. This preprocessor might be different from the
314 one used by the C compiler. Don't forget to append cpplast after the
315 preprocessor options.
317 cppstdin (cppstdin.U):
318 This variable contains the command which will invoke the C
319 preprocessor on standard input and put the output to stdout.
320 It is primarily used by other Configure units that ask about
321 preprocessor symbols.
323 cppsymbols (Cppsym.U):
324 The variable contains the symbols defined by the C preprocessor
325 alone. The symbols defined by cc or by cc when it calls cpp are
326 not in this list, see ccsymbols and cppccsymbols.
327 The list is a space-separated list of symbol=value tokens.
329 crosscompile (crosscompile.U):
330 This variable conditionally defines the CROSSCOMPILE symbol
331 which signifies that the build process is be a cross-compilation.
332 This is normally set by hints files or from Configure command line.
334 cryptlib (d_crypt.U):
335 This variable holds -lcrypt or the path to a libcrypt.a archive if
336 the crypt() function is not defined in the standard C library. It is
337 up to the Makefile to use this.
340 This variable is used internally by Configure to determine the
341 full pathname (if any) of the csh program. After Configure runs,
342 the value is reset to a plain "csh" and is not useful.
344 d__fwalk (d__fwalk.U):
345 This variable conditionally defines HAS__FWALK if _fwalk() is
346 available to apply a function to all the file handles.
348 d_access (d_access.U):
349 This variable conditionally defines HAS_ACCESS if the access() system
350 call is available to check for access permissions using real IDs.
352 d_accessx (d_accessx.U):
353 This variable conditionally defines the HAS_ACCESSX symbol, which
354 indicates to the C program that the accessx() routine is available.
357 This variable conditionally defines the HAS_ALARM symbol, which
358 indicates to the C program that the alarm() routine is available.
360 d_archlib (archlib.U):
361 This variable conditionally defines ARCHLIB to hold the pathname
362 of architecture-dependent library files for $package. If
363 $archlib is the same as $privlib, then this is set to undef.
366 This variable conditionally defines the HAS_ATOLF symbol, which
367 indicates to the C program that the atolf() routine is available.
370 This variable conditionally defines the HAS_ATOLL symbol, which
371 indicates to the C program that the atoll() routine is available.
373 d_attribut (d_attribut.U):
374 This variable conditionally defines HASATTRIBUTE, which
375 indicates the C compiler can check for function attributes,
376 such as printf formats.
379 This variable conditionally defines the HAS_BCMP symbol if
380 the bcmp() routine is available to compare strings.
383 This variable conditionally defines the HAS_BCOPY symbol if
384 the bcopy() routine is available to copy strings.
386 d_bincompat5005 (bincompat5005.U):
387 This variable conditionally defines BINCOMPAT5005 so that embed.h
388 can take special action if this version of Perl should be
389 binary-compatible with Perl 5.005. This is impossible for builds
390 that use features like threads and multiplicity it is always $undef
394 This symbol conditionally defines the symbol BSD when running on a
397 d_bsdgetpgrp (d_getpgrp.U):
398 This variable conditionally defines USE_BSD_GETPGRP if
399 getpgrp needs one arguments whereas USG one needs none.
401 d_bsdsetpgrp (d_setpgrp.U):
402 This variable conditionally defines USE_BSD_SETPGRP if
403 setpgrp needs two arguments whereas USG one needs none.
404 See also d_setpgid for a POSIX interface.
407 This variable conditionally defines the HAS_BZERO symbol if
408 the bzero() routine is available to set memory to 0.
410 d_casti32 (d_casti32.U):
411 This variable conditionally defines CASTI32, which indicates
412 whether the C compiler can cast large floats to 32-bit ints.
414 d_castneg (d_castneg.U):
415 This variable conditionally defines CASTNEG, which indicates
416 wether the C compiler can cast negative float to unsigned.
418 d_charvspr (d_vprintf.U):
419 This variable conditionally defines CHARVSPRINTF if this system
420 has vsprintf returning type (char*). The trend seems to be to
421 declare it as "int vsprintf()".
424 This variable conditionally defines the HAS_CHOWN symbol, which
425 indicates to the C program that the chown() routine is available.
427 d_chroot (d_chroot.U):
428 This variable conditionally defines the HAS_CHROOT symbol, which
429 indicates to the C program that the chroot() routine is available.
431 d_chsize (d_chsize.U):
432 This variable conditionally defines the CHSIZE symbol, which
433 indicates to the C program that the chsize() routine is available
434 to truncate files. You might need a -lx to get this routine.
436 d_closedir (d_closedir.U):
437 This variable conditionally defines HAS_CLOSEDIR if closedir() is
440 d_cmsghdr_s (d_cmsghdr_s.U):
441 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
442 which indicates that the struct cmsghdr is supported.
445 This variable conditionally defines the HASCONST symbol, which
446 indicates to the C program that this C compiler knows about the
450 This variable conditionally defines the CRYPT symbol, which
451 indicates to the C program that the crypt() routine is available
452 to encrypt passwords and the like.
455 This variable conditionally defines the CSH symbol, which
456 indicates to the C program that the C-shell exists.
458 d_cuserid (d_cuserid.U):
459 This variable conditionally defines the HAS_CUSERID symbol, which
460 indicates to the C program that the cuserid() routine is available
461 to get character login names.
463 d_dbl_dig (d_dbl_dig.U):
464 This variable conditionally defines d_dbl_dig if this system's
465 header files provide DBL_DIG, which is the number of significant
466 digits in a double precision number.
468 d_difftime (d_difftime.U):
469 This variable conditionally defines the HAS_DIFFTIME symbol, which
470 indicates to the C program that the difftime() routine is available.
472 d_dirnamlen (i_dirent.U):
473 This variable conditionally defines DIRNAMLEN, which indicates
474 to the C program that the length of directory entry names is
475 provided by a d_namelen field.
477 d_dlerror (d_dlerror.U):
478 This variable conditionally defines the HAS_DLERROR symbol, which
479 indicates to the C program that the dlerror() routine is available.
481 d_dlopen (d_dlopen.U):
482 This variable conditionally defines the HAS_DLOPEN symbol, which
483 indicates to the C program that the dlopen() routine is available.
485 d_dlsymun (d_dlsymun.U):
486 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
487 indicates that we need to prepend an underscore to the symbol
488 name before calling dlsym().
490 d_dosuid (d_dosuid.U):
491 This variable conditionally defines the symbol DOSUID, which
492 tells the C program that it should insert setuid emulation code
493 on hosts which have setuid #! scripts disabled.
495 d_drand48proto (d_drand48proto.U):
496 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
497 which indicates to the C program that the system provides
498 a prototype for the drand48() function. Otherwise, it is
499 up to the program to supply one.
502 This variable conditionally defines HAS_DUP2 if dup2() is
503 available to duplicate file descriptors.
505 d_eaccess (d_eaccess.U):
506 This variable conditionally defines the HAS_EACCESS symbol, which
507 indicates to the C program that the eaccess() routine is available.
509 d_endgrent (d_endgrent.U):
510 This variable conditionally defines the HAS_ENDGRENT symbol, which
511 indicates to the C program that the endgrent() routine is available
512 for sequential access of the group database.
514 d_endhent (d_endhent.U):
515 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
516 available to close whatever was being used for host queries.
518 d_endnent (d_endnent.U):
519 This variable conditionally defines HAS_ENDNETENT if endnetent() is
520 available to close whatever was being used for network queries.
522 d_endpent (d_endpent.U):
523 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
524 available to close whatever was being used for protocol queries.
526 d_endpwent (d_endpwent.U):
527 This variable conditionally defines the HAS_ENDPWENT symbol, which
528 indicates to the C program that the endpwent() routine is available
529 for sequential access of the passwd database.
531 d_endsent (d_endsent.U):
532 This variable conditionally defines HAS_ENDSERVENT if endservent() is
533 available to close whatever was being used for service queries.
535 d_eofnblk (nblock_io.U):
536 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
537 when reading from a non-blocking I/O source.
540 This variable conditionally defines the symbols EUNICE and VAX, which
541 alerts the C program that it must deal with ideosyncracies of VMS.
543 d_fchmod (d_fchmod.U):
544 This variable conditionally defines the HAS_FCHMOD symbol, which
545 indicates to the C program that the fchmod() routine is available
546 to change mode of opened files.
548 d_fchown (d_fchown.U):
549 This variable conditionally defines the HAS_FCHOWN symbol, which
550 indicates to the C program that the fchown() routine is available
551 to change ownership of opened files.
554 This variable conditionally defines the HAS_FCNTL symbol, and indicates
555 whether the fcntl() function exists
557 d_fcntl_can_lock (d_fcntl_can_lock.U):
558 This variable conditionally defines the FCNTL_CAN_LOCK symbol
559 and indicates whether file locking with fcntl() works.
561 d_fd_macros (d_fd_set.U):
562 This variable contains the eventual value of the HAS_FD_MACROS symbol,
563 which indicates if your C compiler knows about the macros which
564 manipulate an fd_set.
566 d_fd_set (d_fd_set.U):
567 This variable contains the eventual value of the HAS_FD_SET symbol,
568 which indicates if your C compiler knows about the fd_set typedef.
570 d_fds_bits (d_fd_set.U):
571 This variable contains the eventual value of the HAS_FDS_BITS symbol,
572 which indicates if your fd_set typedef contains the fds_bits member.
573 If you have an fd_set typedef, but the dweebs who installed it did
574 a half-fast job and neglected to provide the macros to manipulate
575 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
577 d_fgetpos (d_fgetpos.U):
578 This variable conditionally defines HAS_FGETPOS if fgetpos() is
579 available to get the file position indicator.
581 d_flexfnam (d_flexfnam.U):
582 This variable conditionally defines the FLEXFILENAMES symbol, which
583 indicates that the system supports filenames longer than 14 characters.
586 This variable conditionally defines HAS_FLOCK if flock() is
587 available to do file locking.
590 This variable conditionally defines the HAS_FORK symbol, which
591 indicates to the C program that the fork() routine is available.
593 d_fpathconf (d_pathconf.U):
594 This variable conditionally defines the HAS_FPATHCONF symbol, which
595 indicates to the C program that the pathconf() routine is available
596 to determine file-system related limits and options associated
597 with a given open file descriptor.
599 d_fpos64_t (d_fpos64_t.U):
600 This symbol will be defined if the C compiler supports fpos64_t.
602 d_frexpl (d_frexpl.U):
603 This variable conditionally defines the HAS_FREXPL symbol, which
604 indicates to the C program that the frexpl() routine is available.
606 d_fs_data_s (d_fs_data_s.U):
607 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
608 which indicates that the struct fs_data is supported.
610 d_fseeko (d_fseeko.U):
611 This variable conditionally defines the HAS_FSEEKO symbol, which
612 indicates to the C program that the fseeko() routine is available.
614 d_fsetpos (d_fsetpos.U):
615 This variable conditionally defines HAS_FSETPOS if fsetpos() is
616 available to set the file position indicator.
618 d_fstatfs (d_fstatfs.U):
619 This variable conditionally defines the HAS_FSTATFS symbol, which
620 indicates to the C program that the fstatfs() routine is available.
622 d_fstatvfs (d_statvfs.U):
623 This variable conditionally defines the HAS_FSTATVFS symbol, which
624 indicates to the C program that the fstatvfs() routine is available.
627 This variable conditionally defines the HAS_FSYNC symbol, which
628 indicates to the C program that the fsync() routine is available.
630 d_ftello (d_ftello.U):
631 This variable conditionally defines the HAS_FTELLO symbol, which
632 indicates to the C program that the ftello() routine is available.
635 This variable conditionally defines the HAS_FTIME symbol, which indicates
636 that the ftime() routine exists. The ftime() routine is basically
637 a sub-second accuracy clock.
639 d_Gconvert (d_gconvert.U):
640 This variable holds what Gconvert is defined as to convert
641 floating point numbers into strings. It could be 'gconvert'
642 or a more complex macro emulating gconvert with gcvt() or sprintf.
644 d_Gconvert='gconvert((x),(n),(t),(b))'
645 d_Gconvert='gcvt((x),(n),(b))'
646 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
648 d_getcwd (d_getcwd.U):
649 This variable conditionally defines the HAS_GETCWD symbol, which
650 indicates to the C program that the getcwd() routine is available
651 to get the current working directory.
653 d_getespwnam (d_getespwnam.U):
654 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
655 available to retrieve enchanced (shadow) password entries by name.
657 d_getfsstat (d_getfsstat.U):
658 This variable conditionally defines the HAS_GETFSSTAT symbol, which
659 indicates to the C program that the getfsstat() routine is available.
661 d_getgrent (d_getgrent.U):
662 This variable conditionally defines the HAS_GETGRENT symbol, which
663 indicates to the C program that the getgrent() routine is available
664 for sequential access of the group database.
666 d_getgrps (d_getgrps.U):
667 This variable conditionally defines the HAS_GETGROUPS symbol, which
668 indicates to the C program that the getgroups() routine is available
669 to get the list of process groups.
671 d_gethbyaddr (d_gethbyad.U):
672 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
673 indicates to the C program that the gethostbyaddr() routine is available
674 to look up hosts by their IP addresses.
676 d_gethbyname (d_gethbynm.U):
677 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
678 indicates to the C program that the gethostbyname() routine is available
679 to look up host names in some data base or other.
681 d_gethent (d_gethent.U):
682 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
683 available to look up host names in some data base or another.
685 d_gethname (d_gethname.U):
686 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
687 indicates to the C program that the gethostname() routine may be
688 used to derive the host name.
690 d_gethostprotos (d_gethostprotos.U):
691 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
692 which indicates to the C program that <netdb.h> supplies
693 prototypes for the various gethost*() functions.
694 See also netdbtype.U for probing for various netdb types.
696 d_getitimer (d_getitimer.U):
697 This variable conditionally defines the HAS_GETITIMER symbol, which
698 indicates to the C program that the getitimer() routine is available.
700 d_getlogin (d_getlogin.U):
701 This variable conditionally defines the HAS_GETLOGIN symbol, which
702 indicates to the C program that the getlogin() routine is available
703 to get the login name.
705 d_getmnt (d_getmnt.U):
706 This variable conditionally defines the HAS_GETMNT symbol, which
707 indicates to the C program that the getmnt() routine is available
708 to retrieve one or more mount info blocks by filename.
710 d_getmntent (d_getmntent.U):
711 This variable conditionally defines the HAS_GETMNTENT symbol, which
712 indicates to the C program that the getmntent() routine is available
713 to iterate through mounted files to get their mount info.
715 d_getnbyaddr (d_getnbyad.U):
716 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
717 indicates to the C program that the getnetbyaddr() routine is available
718 to look up networks by their IP addresses.
720 d_getnbyname (d_getnbynm.U):
721 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
722 indicates to the C program that the getnetbyname() routine is available
723 to look up networks by their names.
725 d_getnent (d_getnent.U):
726 This variable conditionally defines HAS_GETNETENT if getnetent() is
727 available to look up network names in some data base or another.
729 d_getnetprotos (d_getnetprotos.U):
730 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
731 which indicates to the C program that <netdb.h> supplies
732 prototypes for the various getnet*() functions.
733 See also netdbtype.U for probing for various netdb types.
735 d_getpagsz (d_getpagsz.U):
736 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
737 is available to get the system page size.
739 d_getpbyname (d_getprotby.U):
740 This variable conditionally defines the HAS_GETPROTOBYNAME
741 symbol, which indicates to the C program that the
742 getprotobyname() routine is available to look up protocols
745 d_getpbynumber (d_getprotby.U):
746 This variable conditionally defines the HAS_GETPROTOBYNUMBER
747 symbol, which indicates to the C program that the
748 getprotobynumber() routine is available to look up protocols
751 d_getpent (d_getpent.U):
752 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
753 available to look up protocols in some data base or another.
755 d_getpgid (d_getpgid.U):
756 This variable conditionally defines the HAS_GETPGID symbol, which
757 indicates to the C program that the getpgid(pid) function
758 is available to get the process group id.
760 d_getpgrp2 (d_getpgrp2.U):
761 This variable conditionally defines the HAS_GETPGRP2 symbol, which
762 indicates to the C program that the getpgrp2() (as in DG/UX) routine
763 is available to get the current process group.
765 d_getpgrp (d_getpgrp.U):
766 This variable conditionally defines HAS_GETPGRP if getpgrp() is
767 available to get the current process group.
769 d_getppid (d_getppid.U):
770 This variable conditionally defines the HAS_GETPPID symbol, which
771 indicates to the C program that the getppid() routine is available
772 to get the parent process ID.
774 d_getprior (d_getprior.U):
775 This variable conditionally defines HAS_GETPRIORITY if getpriority()
776 is available to get a process's priority.
778 d_getprotoprotos (d_getprotoprotos.U):
779 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
780 which indicates to the C program that <netdb.h> supplies
781 prototypes for the various getproto*() functions.
782 See also netdbtype.U for probing for various netdb types.
784 d_getprpwnam (d_getprpwnam.U):
785 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
786 available to retrieve protected (shadow) password entries by name.
788 d_getpwent (d_getpwent.U):
789 This variable conditionally defines the HAS_GETPWENT symbol, which
790 indicates to the C program that the getpwent() routine is available
791 for sequential access of the passwd database.
793 d_getsbyname (d_getsrvby.U):
794 This variable conditionally defines the HAS_GETSERVBYNAME
795 symbol, which indicates to the C program that the
796 getservbyname() routine is available to look up services
799 d_getsbyport (d_getsrvby.U):
800 This variable conditionally defines the HAS_GETSERVBYPORT
801 symbol, which indicates to the C program that the
802 getservbyport() routine is available to look up services
805 d_getsent (d_getsent.U):
806 This variable conditionally defines HAS_GETSERVENT if getservent() is
807 available to look up network services in some data base or another.
809 d_getservprotos (d_getservprotos.U):
810 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
811 which indicates to the C program that <netdb.h> supplies
812 prototypes for the various getserv*() functions.
813 See also netdbtype.U for probing for various netdb types.
815 d_getspnam (d_getspnam.U):
816 This variable conditionally defines HAS_GETSPNAM if getspnam() is
817 available to retrieve SysV shadow password entries by name.
819 d_gettimeod (d_ftime.U):
820 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
821 indicates that the gettimeofday() system call exists (to obtain a
822 sub-second accuracy clock). You should probably include <sys/resource.h>.
824 d_gnulibc (d_gnulibc.U):
825 Defined if we're dealing with the GNU C Library.
827 d_grpasswd (i_grp.U):
828 This variable conditionally defines GRPASSWD, which indicates
829 that struct group in <grp.h> contains gr_passwd.
831 d_hasmntopt (d_hasmntopt.U):
832 This variable conditionally defines the HAS_HASMNTOPT symbol, which
833 indicates to the C program that the hasmntopt() routine is available
834 to query the mount options of file systems.
837 This variable conditionally defines HAS_HTONL if htonl() and its
838 friends are available to do network order byte swapping.
841 This variable conditionally defines the HAS_ICONV symbol, which
842 indicates to the C program that the iconv() routine is available.
844 d_index (d_strchr.U):
845 This variable conditionally defines HAS_INDEX if index() and
846 rindex() are available for string searching.
848 d_inetaton (d_inetaton.U):
849 This variable conditionally defines the HAS_INET_ATON symbol, which
850 indicates to the C program that the inet_aton() function is available
851 to parse IP address "dotted-quad" strings.
853 d_int64_t (d_int64_t.U):
854 This symbol will be defined if the C compiler supports int64_t.
856 d_isascii (d_isascii.U):
857 This variable conditionally defines the HAS_ISASCII constant,
858 which indicates to the C program that isascii() is available.
861 This variable conditionally defines the HAS_ISNAN symbol, which
862 indicates to the C program that the isnan() routine is available.
864 d_isnanl (d_isnanl.U):
865 This variable conditionally defines the HAS_ISNANL symbol, which
866 indicates to the C program that the isnanl() routine is available.
868 d_killpg (d_killpg.U):
869 This variable conditionally defines the HAS_KILLPG symbol, which
870 indicates to the C program that the killpg() routine is available
871 to kill process groups.
873 d_lchown (d_lchown.U):
874 This variable conditionally defines the HAS_LCHOWN symbol, which
875 indicates to the C program that the lchown() routine is available
876 to operate on a symbolic link (instead of following the link).
878 d_ldbl_dig (d_ldbl_dig.U):
879 This variable conditionally defines d_ldbl_dig if this system's
880 header files provide LDBL_DIG, which is the number of significant
881 digits in a long double precision number.
884 This variable conditionally defines HAS_LINK if link() is
885 available to create hard links.
887 d_locconv (d_locconv.U):
888 This variable conditionally defines HAS_LOCALECONV if localeconv() is
889 available for numeric and monetary formatting conventions.
892 This variable conditionally defines HAS_LOCKF if lockf() is
893 available to do file locking.
895 d_longdbl (d_longdbl.U):
896 This variable conditionally defines HAS_LONG_DOUBLE if
897 the long double type is supported.
899 d_longlong (d_longlong.U):
900 This variable conditionally defines HAS_LONG_LONG if
901 the long long type is supported.
903 d_lseekproto (d_lseekproto.U):
904 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
905 which indicates to the C program that the system provides
906 a prototype for the lseek() function. Otherwise, it is
907 up to the program to supply one.
910 This variable conditionally defines HAS_LSTAT if lstat() is
911 available to do file stats on symbolic links.
913 d_madvise (d_madvise.U):
914 This variable conditionally defines HAS_MADVISE if madvise() is
915 available to map a file into memory.
918 This variable conditionally defines the HAS_MBLEN symbol, which
919 indicates to the C program that the mblen() routine is available
920 to find the number of bytes in a multibye character.
922 d_mbstowcs (d_mbstowcs.U):
923 This variable conditionally defines the HAS_MBSTOWCS symbol, which
924 indicates to the C program that the mbstowcs() routine is available
925 to convert a multibyte string into a wide character string.
927 d_mbtowc (d_mbtowc.U):
928 This variable conditionally defines the HAS_MBTOWC symbol, which
929 indicates to the C program that the mbtowc() routine is available
930 to convert multibyte to a wide character.
932 d_memchr (d_memchr.U):
933 This variable conditionally defines the HAS_MEMCHR symbol, which
934 indicates to the C program that the memchr() routine is available
935 to locate characters within a C string.
937 d_memcmp (d_memcmp.U):
938 This variable conditionally defines the HAS_MEMCMP symbol, which
939 indicates to the C program that the memcmp() routine is available
940 to compare blocks of memory.
942 d_memcpy (d_memcpy.U):
943 This variable conditionally defines the HAS_MEMCPY symbol, which
944 indicates to the C program that the memcpy() routine is available
945 to copy blocks of memory.
947 d_memmove (d_memmove.U):
948 This variable conditionally defines the HAS_MEMMOVE symbol, which
949 indicates to the C program that the memmove() routine is available
950 to copy potentatially overlapping blocks of memory.
952 d_memset (d_memset.U):
953 This variable conditionally defines the HAS_MEMSET symbol, which
954 indicates to the C program that the memset() routine is available
955 to set blocks of memory.
958 This variable conditionally defines the HAS_MKDIR symbol, which
959 indicates to the C program that the mkdir() routine is available
960 to create directories..
962 d_mkdtemp (d_mkdtemp.U):
963 This variable conditionally defines the HAS_MKDTEMP symbol, which
964 indicates to the C program that the mkdtemp() routine is available
965 to exclusively create a uniquely named temporary directory.
967 d_mkfifo (d_mkfifo.U):
968 This variable conditionally defines the HAS_MKFIFO symbol, which
969 indicates to the C program that the mkfifo() routine is available.
971 d_mkstemp (d_mkstemp.U):
972 This variable conditionally defines the HAS_MKSTEMP symbol, which
973 indicates to the C program that the mkstemp() routine is available
974 to exclusively create and open a uniquely named temporary file.
976 d_mkstemps (d_mkstemps.U):
977 This variable conditionally defines the HAS_MKSTEMPS symbol, which
978 indicates to the C program that the mkstemps() routine is available
979 to exclusively create and open a uniquely named (with a suffix)
982 d_mktime (d_mktime.U):
983 This variable conditionally defines the HAS_MKTIME symbol, which
984 indicates to the C program that the mktime() routine is available.
987 This variable conditionally defines HAS_MMAP if mmap() is
988 available to map a file into memory.
991 This variable conditionally defines the HAS_MODFL symbol, which
992 indicates to the C program that the modfl() routine is available.
994 d_mprotect (d_mprotect.U):
995 This variable conditionally defines HAS_MPROTECT if mprotect() is
996 available to modify the access protection of a memory mapped file.
999 This variable conditionally defines the HAS_MSG symbol, which
1000 indicates that the entire msg*(2) library is present.
1002 d_msg_ctrunc (d_socket.U):
1003 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
1004 which indicates that the MSG_CTRUNC is available. #ifdef is
1005 not enough because it may be an enum, glibc has been known to do this.
1007 d_msg_dontroute (d_socket.U):
1008 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1009 which indicates that the MSG_DONTROUTE is available. #ifdef is
1010 not enough because it may be an enum, glibc has been known to do this.
1012 d_msg_oob (d_socket.U):
1013 This variable conditionally defines the HAS_MSG_OOB symbol,
1014 which indicates that the MSG_OOB is available. #ifdef is
1015 not enough because it may be an enum, glibc has been known to do this.
1017 d_msg_peek (d_socket.U):
1018 This variable conditionally defines the HAS_MSG_PEEK symbol,
1019 which indicates that the MSG_PEEK is available. #ifdef is
1020 not enough because it may be an enum, glibc has been known to do this.
1022 d_msg_proxy (d_socket.U):
1023 This variable conditionally defines the HAS_MSG_PROXY symbol,
1024 which indicates that the MSG_PROXY is available. #ifdef is
1025 not enough because it may be an enum, glibc has been known to do this.
1027 d_msgctl (d_msgctl.U):
1028 This variable conditionally defines the HAS_MSGCTL symbol, which
1029 indicates to the C program that the msgctl() routine is available.
1031 d_msgget (d_msgget.U):
1032 This variable conditionally defines the HAS_MSGGET symbol, which
1033 indicates to the C program that the msgget() routine is available.
1035 d_msghdr_s (d_msghdr_s.U):
1036 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
1037 which indicates that the struct msghdr is supported.
1039 d_msgrcv (d_msgrcv.U):
1040 This variable conditionally defines the HAS_MSGRCV symbol, which
1041 indicates to the C program that the msgrcv() routine is available.
1043 d_msgsnd (d_msgsnd.U):
1044 This variable conditionally defines the HAS_MSGSND symbol, which
1045 indicates to the C program that the msgsnd() routine is available.
1047 d_msync (d_msync.U):
1048 This variable conditionally defines HAS_MSYNC if msync() is
1049 available to synchronize a mapped file.
1051 d_munmap (d_munmap.U):
1052 This variable conditionally defines HAS_MUNMAP if munmap() is
1053 available to unmap a region mapped by mmap().
1055 d_mymalloc (mallocsrc.U):
1056 This variable conditionally defines MYMALLOC in case other parts
1057 of the source want to take special action if MYMALLOC is used.
1058 This may include different sorts of profiling or error detection.
1061 This variable conditionally defines the HAS_NICE symbol, which
1062 indicates to the C program that the nice() routine is available.
1064 d_nv_preserves_uv (perlxv.U):
1065 This variable indicates whether a variable of type nvtype
1066 can preserve all the bits a variable of type uvtype.
1068 d_nv_preserves_uv_bits (perlxv.U):
1069 This variable indicates how many of bits type uvtype
1070 a variable nvtype can preserve.
1072 d_off64_t (d_off64_t.U):
1073 This symbol will be defined if the C compiler supports off64_t.
1075 d_old_pthread_create_joinable (d_pthrattrj.U):
1076 This variable conditionally defines pthread_create_joinable.
1077 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1079 d_oldpthreads (usethreads.U):
1080 This variable conditionally defines the OLD_PTHREADS_API symbol,
1081 and indicates that Perl should be built to use the old
1082 draft POSIX threads API. This is only potentially meaningful if
1085 d_oldsock (d_socket.U):
1086 This variable conditionally defines the OLDSOCKET symbol, which
1087 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1089 d_open3 (d_open3.U):
1090 This variable conditionally defines the HAS_OPEN3 manifest constant,
1091 which indicates to the C program that the 3 argument version of
1092 the open(2) function is available.
1094 d_pathconf (d_pathconf.U):
1095 This variable conditionally defines the HAS_PATHCONF symbol, which
1096 indicates to the C program that the pathconf() routine is available
1097 to determine file-system related limits and options associated
1098 with a given filename.
1100 d_pause (d_pause.U):
1101 This variable conditionally defines the HAS_PAUSE symbol, which
1102 indicates to the C program that the pause() routine is available
1103 to suspend a process until a signal is received.
1105 d_perl_otherlibdirs (otherlibdirs.U):
1106 This variable conditionally defines PERL_OTHERLIBDIRS, which
1107 contains a colon-separated set of paths for the perl binary to
1108 include in @INC. See also otherlibdirs.
1110 d_phostname (d_gethname.U):
1111 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1112 contains the shell command which, when fed to popen(), may be
1113 used to derive the host name.
1116 This variable conditionally defines the HAS_PIPE symbol, which
1117 indicates to the C program that the pipe() routine is available
1118 to create an inter-process channel.
1121 This variable conditionally defines the HAS_POLL symbol, which
1122 indicates to the C program that the poll() routine is available
1123 to poll active file descriptors.
1125 d_portable (d_portable.U):
1126 This variable conditionally defines the PORTABLE symbol, which
1127 indicates to the C program that it should not assume that it is
1128 running on the machine it was compiled on.
1130 d_PRId64 (quadfio.U):
1131 This variable conditionally defines the PERL_PRId64 symbol, which
1132 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1134 d_PRIeldbl (longdblfio.U):
1135 This variable conditionally defines the PERL_PRIfldbl symbol, which
1136 indiciates that stdio has a symbol to print long doubles.
1138 d_PRIEUldbl (longdblfio.U):
1139 This variable conditionally defines the PERL_PRIfldbl symbol, which
1140 indiciates that stdio has a symbol to print long doubles.
1141 The 'U' in the name is to separate this from d_PRIeldbl so that even
1142 case-blind systems can see the difference.
1144 d_PRIfldbl (longdblfio.U):
1145 This variable conditionally defines the PERL_PRIfldbl symbol, which
1146 indiciates that stdio has a symbol to print long doubles.
1148 d_PRIFUldbl (longdblfio.U):
1149 This variable conditionally defines the PERL_PRIfldbl symbol, which
1150 indiciates that stdio has a symbol to print long doubles.
1151 The 'U' in the name is to separate this from d_PRIfldbl so that even
1152 case-blind systems can see the difference.
1154 d_PRIgldbl (longdblfio.U):
1155 This variable conditionally defines the PERL_PRIfldbl symbol, which
1156 indiciates that stdio has a symbol to print long doubles.
1158 d_PRIGUldbl (longdblfio.U):
1159 This variable conditionally defines the PERL_PRIfldbl symbol, which
1160 indiciates that stdio has a symbol to print long doubles.
1161 The 'U' in the name is to separate this from d_PRIgldbl so that even
1162 case-blind systems can see the difference.
1164 d_PRIi64 (quadfio.U):
1165 This variable conditionally defines the PERL_PRIi64 symbol, which
1166 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1168 d_PRIo64 (quadfio.U):
1169 This variable conditionally defines the PERL_PRIo64 symbol, which
1170 indiciates that stdio has a symbol to print 64-bit octal numbers.
1172 d_PRIu64 (quadfio.U):
1173 This variable conditionally defines the PERL_PRIu64 symbol, which
1174 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1177 d_PRIx64 (quadfio.U):
1178 This variable conditionally defines the PERL_PRIx64 symbol, which
1179 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1181 d_PRIXU64 (quadfio.U):
1182 This variable conditionally defines the PERL_PRIXU64 symbol, which
1183 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1184 The 'U' in the name is to separate this from d_PRIx64 so that even
1185 case-blind systems can see the difference.
1187 d_pthread_yield (d_pthread_y.U):
1188 This variable conditionally defines the HAS_PTHREAD_YIELD
1189 symbol if the pthread_yield routine is available to yield
1190 the execution of the current thread.
1193 This variable conditionally defines PWAGE, which indicates
1194 that struct passwd contains pw_age.
1196 d_pwchange (i_pwd.U):
1197 This variable conditionally defines PWCHANGE, which indicates
1198 that struct passwd contains pw_change.
1200 d_pwclass (i_pwd.U):
1201 This variable conditionally defines PWCLASS, which indicates
1202 that struct passwd contains pw_class.
1204 d_pwcomment (i_pwd.U):
1205 This variable conditionally defines PWCOMMENT, which indicates
1206 that struct passwd contains pw_comment.
1208 d_pwexpire (i_pwd.U):
1209 This variable conditionally defines PWEXPIRE, which indicates
1210 that struct passwd contains pw_expire.
1212 d_pwgecos (i_pwd.U):
1213 This variable conditionally defines PWGECOS, which indicates
1214 that struct passwd contains pw_gecos.
1216 d_pwpasswd (i_pwd.U):
1217 This variable conditionally defines PWPASSWD, which indicates
1218 that struct passwd contains pw_passwd.
1220 d_pwquota (i_pwd.U):
1221 This variable conditionally defines PWQUOTA, which indicates
1222 that struct passwd contains pw_quota.
1224 d_qgcvt (d_qgcvt.U):
1225 This variable conditionally defines the HAS_QGCVT symbol, which
1226 indicates to the C program that the qgcvt() routine is available.
1228 d_quad (quadtype.U):
1229 This variable, if defined, tells that there's a 64-bit integer type,
1232 d_readdir (d_readdir.U):
1233 This variable conditionally defines HAS_READDIR if readdir() is
1234 available to read directory entries.
1236 d_readlink (d_readlink.U):
1237 This variable conditionally defines the HAS_READLINK symbol, which
1238 indicates to the C program that the readlink() routine is available
1239 to read the value of a symbolic link.
1241 d_readv (d_readv.U):
1242 This variable conditionally defines the HAS_READV symbol, which
1243 indicates to the C program that the readv() routine is available.
1245 d_recvmsg (d_recvmsg.U):
1246 This variable conditionally defines the HAS_RECVMSG symbol, which
1247 indicates to the C program that the recvmsg() routine is available.
1249 d_rename (d_rename.U):
1250 This variable conditionally defines the HAS_RENAME symbol, which
1251 indicates to the C program that the rename() routine is available
1254 d_rewinddir (d_readdir.U):
1255 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1258 d_rmdir (d_rmdir.U):
1259 This variable conditionally defines HAS_RMDIR if rmdir() is
1260 available to remove directories.
1262 d_safebcpy (d_safebcpy.U):
1263 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1264 the bcopy() routine can do overlapping copies.
1266 d_safemcpy (d_safemcpy.U):
1267 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1268 the memcpy() routine can do overlapping copies.
1270 d_sanemcmp (d_sanemcmp.U):
1271 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1272 the memcpy() routine is available and can be used to compare relative
1273 magnitudes of chars with their high bits set.
1275 d_sbrkproto (d_sbrkproto.U):
1276 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1277 which indicates to the C program that the system provides
1278 a prototype for the sbrk() function. Otherwise, it is
1279 up to the program to supply one.
1281 d_sched_yield (d_pthread_y.U):
1282 This variable conditionally defines the HAS_SCHED_YIELD
1283 symbol if the sched_yield routine is available to yield
1284 the execution of the current thread.
1286 d_scm_rights (d_socket.U):
1287 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1288 which indicates that the SCM_RIGHTS is available. #ifdef is
1289 not enough because it may be an enum, glibc has been known to do this.
1291 d_SCNfldbl (longdblfio.U):
1292 This variable conditionally defines the PERL_PRIfldbl symbol, which
1293 indiciates that stdio has a symbol to scan long doubles.
1295 d_seekdir (d_readdir.U):
1296 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1299 d_select (d_select.U):
1300 This variable conditionally defines HAS_SELECT if select() is
1301 available to select active file descriptors. A <sys/time.h>
1302 inclusion may be necessary for the timeout field.
1305 This variable conditionally defines the HAS_SEM symbol, which
1306 indicates that the entire sem*(2) library is present.
1308 d_semctl (d_semctl.U):
1309 This variable conditionally defines the HAS_SEMCTL symbol, which
1310 indicates to the C program that the semctl() routine is available.
1312 d_semctl_semid_ds (d_union_semun.U):
1313 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1314 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1316 d_semctl_semun (d_union_semun.U):
1317 This variable conditionally defines USE_SEMCTL_SEMUN, which
1318 indicates that union semun is to be used for semctl IPC_STAT.
1320 d_semget (d_semget.U):
1321 This variable conditionally defines the HAS_SEMGET symbol, which
1322 indicates to the C program that the semget() routine is available.
1324 d_semop (d_semop.U):
1325 This variable conditionally defines the HAS_SEMOP symbol, which
1326 indicates to the C program that the semop() routine is available.
1328 d_sendmsg (d_sendmsg.U):
1329 This variable conditionally defines the HAS_SENDMSG symbol, which
1330 indicates to the C program that the sendmsg() routine is available.
1332 d_setegid (d_setegid.U):
1333 This variable conditionally defines the HAS_SETEGID symbol, which
1334 indicates to the C program that the setegid() routine is available
1335 to change the effective gid of the current program.
1337 d_seteuid (d_seteuid.U):
1338 This variable conditionally defines the HAS_SETEUID symbol, which
1339 indicates to the C program that the seteuid() routine is available
1340 to change the effective uid of the current program.
1342 d_setgrent (d_setgrent.U):
1343 This variable conditionally defines the HAS_SETGRENT symbol, which
1344 indicates to the C program that the setgrent() routine is available
1345 for initializing sequential access to the group database.
1347 d_setgrps (d_setgrps.U):
1348 This variable conditionally defines the HAS_SETGROUPS symbol, which
1349 indicates to the C program that the setgroups() routine is available
1350 to set the list of process groups.
1352 d_sethent (d_sethent.U):
1353 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1356 d_setitimer (d_setitimer.U):
1357 This variable conditionally defines the HAS_SETITIMER symbol, which
1358 indicates to the C program that the setitimer() routine is available.
1360 d_setlinebuf (d_setlnbuf.U):
1361 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1362 indicates to the C program that the setlinebuf() routine is available
1363 to change stderr or stdout from block-buffered or unbuffered to a
1366 d_setlocale (d_setlocale.U):
1367 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1368 available to handle locale-specific ctype implementations.
1370 d_setnent (d_setnent.U):
1371 This variable conditionally defines HAS_SETNETENT if setnetent() is
1374 d_setpent (d_setpent.U):
1375 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1378 d_setpgid (d_setpgid.U):
1379 This variable conditionally defines the HAS_SETPGID symbol if the
1380 setpgid(pid, gpid) function is available to set process group ID.
1382 d_setpgrp2 (d_setpgrp2.U):
1383 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1384 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1385 is available to set the current process group.
1387 d_setpgrp (d_setpgrp.U):
1388 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1389 available to set the current process group.
1391 d_setprior (d_setprior.U):
1392 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1393 is available to set a process's priority.
1395 d_setproctitle (d_setproctitle.U):
1396 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1397 which indicates to the C program that the setproctitle() routine
1400 d_setpwent (d_setpwent.U):
1401 This variable conditionally defines the HAS_SETPWENT symbol, which
1402 indicates to the C program that the setpwent() routine is available
1403 for initializing sequential access to the passwd database.
1405 d_setregid (d_setregid.U):
1406 This variable conditionally defines HAS_SETREGID if setregid() is
1407 available to change the real and effective gid of the current
1410 d_setresgid (d_setregid.U):
1411 This variable conditionally defines HAS_SETRESGID if setresgid() is
1412 available to change the real, effective and saved gid of the current
1415 d_setresuid (d_setreuid.U):
1416 This variable conditionally defines HAS_SETREUID if setresuid() is
1417 available to change the real, effective and saved uid of the current
1420 d_setreuid (d_setreuid.U):
1421 This variable conditionally defines HAS_SETREUID if setreuid() is
1422 available to change the real and effective uid of the current
1425 d_setrgid (d_setrgid.U):
1426 This variable conditionally defines the HAS_SETRGID symbol, which
1427 indicates to the C program that the setrgid() routine is available
1428 to change the real gid of the current program.
1430 d_setruid (d_setruid.U):
1431 This variable conditionally defines the HAS_SETRUID symbol, which
1432 indicates to the C program that the setruid() routine is available
1433 to change the real uid of the current program.
1435 d_setsent (d_setsent.U):
1436 This variable conditionally defines HAS_SETSERVENT if setservent() is
1439 d_setsid (d_setsid.U):
1440 This variable conditionally defines HAS_SETSID if setsid() is
1441 available to set the process group ID.
1443 d_setvbuf (d_setvbuf.U):
1444 This variable conditionally defines the HAS_SETVBUF symbol, which
1445 indicates to the C program that the setvbuf() routine is available
1446 to change buffering on an open stdio stream.
1449 This variable conditionally defines the USE_SFIO symbol,
1450 and indicates whether sfio is available (and should be used).
1453 This variable conditionally defines the HAS_SHM symbol, which
1454 indicates that the entire shm*(2) library is present.
1456 d_shmat (d_shmat.U):
1457 This variable conditionally defines the HAS_SHMAT symbol, which
1458 indicates to the C program that the shmat() routine is available.
1460 d_shmatprototype (d_shmat.U):
1461 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1462 symbol, which indicates that sys/shm.h has a prototype for
1465 d_shmctl (d_shmctl.U):
1466 This variable conditionally defines the HAS_SHMCTL symbol, which
1467 indicates to the C program that the shmctl() routine is available.
1469 d_shmdt (d_shmdt.U):
1470 This variable conditionally defines the HAS_SHMDT symbol, which
1471 indicates to the C program that the shmdt() routine is available.
1473 d_shmget (d_shmget.U):
1474 This variable conditionally defines the HAS_SHMGET symbol, which
1475 indicates to the C program that the shmget() routine is available.
1477 d_sigaction (d_sigaction.U):
1478 This variable conditionally defines the HAS_SIGACTION symbol, which
1479 indicates that the Vr4 sigaction() routine is available.
1481 d_sigprocmask (d_sigprocmask.U):
1482 This variable conditionally defines HAS_SIGPROCMASK
1483 if sigprocmask() is available to examine or change the signal mask
1484 of the calling process.
1486 d_sigsetjmp (d_sigsetjmp.U):
1487 This variable conditionally defines the HAS_SIGSETJMP symbol,
1488 which indicates that the sigsetjmp() routine is available to
1489 call setjmp() and optionally save the process's signal mask.
1491 d_sockatmark (d_sockatmark.U):
1492 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1493 indicates to the C program that the sockatmark() routine is available.
1495 d_socket (d_socket.U):
1496 This variable conditionally defines HAS_SOCKET, which indicates
1497 that the BSD socket interface is supported.
1499 d_socklen_t (d_socklen_t.U):
1500 This symbol will be defined if the C compiler supports socklen_t.
1502 d_sockpair (d_socket.U):
1503 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1504 indicates that the BSD socketpair() is supported.
1506 d_socks5_init (d_socks5_init.U):
1507 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1508 indicates to the C program that the socks5_init() routine is available.
1510 d_sqrtl (d_sqrtl.U):
1511 This variable conditionally defines the HAS_SQRTL symbol, which
1512 indicates to the C program that the sqrtl() routine is available.
1514 d_statblks (d_statblks.U):
1515 This variable conditionally defines USE_STAT_BLOCKS
1516 if this system has a stat structure declaring
1517 st_blksize and st_blocks.
1519 d_statfs_f_flags (d_statfs_f_flags.U):
1520 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1521 symbol, which indicates to struct statfs from has f_flags member.
1522 This kind of struct statfs is coming from sys/mount.h (BSD),
1523 not from sys/statfs.h (SYSV).
1525 d_statfs_s (d_statfs_s.U):
1526 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1527 which indicates that the struct statfs is supported.
1529 d_statvfs (d_statvfs.U):
1530 This variable conditionally defines the HAS_STATVFS symbol, which
1531 indicates to the C program that the statvfs() routine is available.
1533 d_stdio_cnt_lval (d_stdstdio.U):
1534 This variable conditionally defines STDIO_CNT_LVALUE if the
1535 FILE_cnt macro can be used as an lvalue.
1537 d_stdio_ptr_lval (d_stdstdio.U):
1538 This variable conditionally defines STDIO_PTR_LVALUE if the
1539 FILE_ptr macro can be used as an lvalue.
1541 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1542 This symbol is defined if using the FILE_ptr macro as an lvalue
1543 to increase the pointer by n leaves File_cnt(fp) unchanged.
1545 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1546 This symbol is defined if using the FILE_ptr macro as an lvalue
1547 to increase the pointer by n has the side effect of decreasing the
1548 value of File_cnt(fp) by n.
1550 d_stdio_stream_array (stdio_streams.U):
1551 This variable tells whether there is an array holding
1554 d_stdiobase (d_stdstdio.U):
1555 This variable conditionally defines USE_STDIO_BASE if this system
1556 has a FILE structure declaring a usable _base field (or equivalent)
1559 d_stdstdio (d_stdstdio.U):
1560 This variable conditionally defines USE_STDIO_PTR if this system
1561 has a FILE structure declaring usable _ptr and _cnt fields (or
1562 equivalent) in stdio.h.
1564 d_strchr (d_strchr.U):
1565 This variable conditionally defines HAS_STRCHR if strchr() and
1566 strrchr() are available for string searching.
1568 d_strcoll (d_strcoll.U):
1569 This variable conditionally defines HAS_STRCOLL if strcoll() is
1570 available to compare strings using collating information.
1572 d_strctcpy (d_strctcpy.U):
1573 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1574 indicates to the C program that this C compiler knows how to copy
1577 d_strerrm (d_strerror.U):
1578 This variable holds what Strerrr is defined as to translate an error
1579 code condition into an error message string. It could be 'strerror'
1580 or a more complex macro emulating strrror with sys_errlist[], or the
1581 "unknown" string when both strerror and sys_errlist are missing.
1583 d_strerror (d_strerror.U):
1584 This variable conditionally defines HAS_STRERROR if strerror() is
1585 available to translate error numbers to strings.
1587 d_strftime (d_strftime.U):
1588 This variable conditionally defines the HAS_STRFTIME symbol, which
1589 indicates to the C program that the strftime() routine is available.
1591 d_strtod (d_strtod.U):
1592 This variable conditionally defines the HAS_STRTOD symbol, which
1593 indicates to the C program that the strtod() routine is available
1594 to provide better numeric string conversion than atof().
1596 d_strtol (d_strtol.U):
1597 This variable conditionally defines the HAS_STRTOL symbol, which
1598 indicates to the C program that the strtol() routine is available
1599 to provide better numeric string conversion than atoi() and friends.
1601 d_strtold (d_strtold.U):
1602 This variable conditionally defines the HAS_STRTOLD symbol, which
1603 indicates to the C program that the strtold() routine is available.
1605 d_strtoll (d_strtoll.U):
1606 This variable conditionally defines the HAS_STRTOLL symbol, which
1607 indicates to the C program that the strtoll() routine is available.
1609 d_strtoq (d_strtoq.U):
1610 This variable conditionally defines the HAS_STRTOQ symbol, which
1611 indicates to the C program that the strtoq() routine is available.
1613 d_strtoul (d_strtoul.U):
1614 This variable conditionally defines the HAS_STRTOUL symbol, which
1615 indicates to the C program that the strtoul() routine is available
1616 to provide conversion of strings to unsigned long.
1618 d_strtoull (d_strtoull.U):
1619 This variable conditionally defines the HAS_STRTOULL symbol, which
1620 indicates to the C program that the strtoull() routine is available.
1622 d_strtouq (d_strtouq.U):
1623 This variable conditionally defines the HAS_STRTOUQ symbol, which
1624 indicates to the C program that the strtouq() routine is available.
1626 d_strxfrm (d_strxfrm.U):
1627 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1628 available to transform strings.
1630 d_suidsafe (d_dosuid.U):
1631 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1632 if setuid scripts can be secure. This test looks in /dev/fd/.
1634 d_symlink (d_symlink.U):
1635 This variable conditionally defines the HAS_SYMLINK symbol, which
1636 indicates to the C program that the symlink() routine is available
1637 to create symbolic links.
1639 d_syscall (d_syscall.U):
1640 This variable conditionally defines HAS_SYSCALL if syscall() is
1641 available call arbitrary system calls.
1643 d_sysconf (d_sysconf.U):
1644 This variable conditionally defines the HAS_SYSCONF symbol, which
1645 indicates to the C program that the sysconf() routine is available
1646 to determine system related limits and options.
1648 d_sysernlst (d_strerror.U):
1649 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1650 is available to translate error numbers to the symbolic name.
1652 d_syserrlst (d_strerror.U):
1653 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1654 available to translate error numbers to strings.
1656 d_system (d_system.U):
1657 This variable conditionally defines HAS_SYSTEM if system() is
1658 available to issue a shell command.
1660 d_tcgetpgrp (d_tcgtpgrp.U):
1661 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1662 indicates to the C program that the tcgetpgrp() routine is available.
1663 to get foreground process group ID.
1665 d_tcsetpgrp (d_tcstpgrp.U):
1666 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1667 indicates to the C program that the tcsetpgrp() routine is available
1668 to set foreground process group ID.
1670 d_telldir (d_readdir.U):
1671 This variable conditionally defines HAS_TELLDIR if telldir() is
1674 d_telldirproto (d_telldirproto.U):
1675 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1676 which indicates to the C program that the system provides
1677 a prototype for the telldir() function. Otherwise, it is
1678 up to the program to supply one.
1681 This variable conditionally defines the HAS_TIME symbol, which indicates
1682 that the time() routine exists. The time() routine is normaly
1683 provided on UNIX systems.
1685 d_times (d_times.U):
1686 This variable conditionally defines the HAS_TIMES symbol, which indicates
1687 that the times() routine exists. The times() routine is normaly
1688 provided on UNIX systems. You may have to include <sys/times.h>.
1690 d_truncate (d_truncate.U):
1691 This variable conditionally defines HAS_TRUNCATE if truncate() is
1692 available to truncate files.
1694 d_tzname (d_tzname.U):
1695 This variable conditionally defines HAS_TZNAME if tzname[] is
1696 available to access timezone names.
1698 d_u32align (d_u32align.U):
1699 This variable tells whether you must access character data
1700 through U32-aligned pointers.
1702 d_ualarm (d_ualarm.U):
1703 This variable conditionally defines the HAS_UALARM symbol, which
1704 indicates to the C program that the ualarm() routine is available.
1706 d_umask (d_umask.U):
1707 This variable conditionally defines the HAS_UMASK symbol, which
1708 indicates to the C program that the umask() routine is available.
1709 to set and get the value of the file creation mask.
1711 d_uname (d_gethname.U):
1712 This variable conditionally defines the HAS_UNAME symbol, which
1713 indicates to the C program that the uname() routine may be
1714 used to derive the host name.
1716 d_union_semun (d_union_semun.U):
1717 This variable conditionally defines HAS_UNION_SEMUN if the
1718 union semun is defined by including <sys/sem.h>.
1720 d_usleep (d_usleep.U):
1721 This variable conditionally defines HAS_USLEEP if usleep() is
1722 available to do high granularity sleeps.
1724 d_ustat (d_ustat.U):
1725 This variable conditionally defines HAS_USTAT if ustat() is
1726 available to query file system statistics by dev_t.
1728 d_vendorarch (vendorarch.U):
1729 This variable conditionally defined PERL_VENDORARCH.
1731 d_vendorbin (vendorbin.U):
1732 This variable conditionally defines PERL_VENDORBIN.
1734 d_vendorlib (vendorlib.U):
1735 This variable conditionally defines PERL_VENDORLIB.
1737 d_vfork (d_vfork.U):
1738 This variable conditionally defines the HAS_VFORK symbol, which
1739 indicates the vfork() routine is available.
1741 d_void_closedir (d_closedir.U):
1742 This variable conditionally defines VOID_CLOSEDIR if closedir()
1743 does not return a value.
1745 d_voidsig (d_voidsig.U):
1746 This variable conditionally defines VOIDSIG if this system
1747 declares "void (*signal(...))()" in signal.h. The old way was to
1748 declare it as "int (*signal(...))()".
1750 d_voidtty (i_sysioctl.U):
1751 This variable conditionally defines USE_IOCNOTTY to indicate that the
1752 ioctl() call with TIOCNOTTY should be used to void tty association.
1753 Otherwise (on USG probably), it is enough to close the standard file
1754 decriptors and do a setpgrp().
1756 d_volatile (d_volatile.U):
1757 This variable conditionally defines the HASVOLATILE symbol, which
1758 indicates to the C program that this C compiler knows about the
1759 volatile declaration.
1761 d_vprintf (d_vprintf.U):
1762 This variable conditionally defines the HAS_VPRINTF symbol, which
1763 indicates to the C program that the vprintf() routine is available
1764 to printf with a pointer to an argument list.
1766 d_wait4 (d_wait4.U):
1767 This variable conditionally defines the HAS_WAIT4 symbol, which
1768 indicates the wait4() routine is available.
1770 d_waitpid (d_waitpid.U):
1771 This variable conditionally defines HAS_WAITPID if waitpid() is
1772 available to wait for child process.
1774 d_wcstombs (d_wcstombs.U):
1775 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1776 indicates to the C program that the wcstombs() routine is available
1777 to convert wide character strings to multibyte strings.
1779 d_wctomb (d_wctomb.U):
1780 This variable conditionally defines the HAS_WCTOMB symbol, which
1781 indicates to the C program that the wctomb() routine is available
1782 to convert a wide character to a multibyte.
1784 d_writev (d_writev.U):
1785 This variable conditionally defines the HAS_WRITEV symbol, which
1786 indicates to the C program that the writev() routine is available.
1789 This variable conditionally defines the symbol XENIX, which alerts
1790 the C program that it runs under Xenix.
1793 This variable is used internally by Configure to determine the
1794 full pathname (if any) of the date program. After Configure runs,
1795 the value is reset to a plain "date" and is not useful.
1797 db_hashtype (i_db.U):
1798 This variable contains the type of the hash structure element
1799 in the <db.h> header file. In older versions of DB, it was
1800 int, while in newer ones it is u_int32_t.
1802 db_prefixtype (i_db.U):
1803 This variable contains the type of the prefix structure element
1804 in the <db.h> header file. In older versions of DB, it was
1805 int, while in newer ones it is size_t.
1807 defvoidused (voidflags.U):
1808 This variable contains the default value of the VOIDUSED symbol (15).
1810 direntrytype (i_dirent.U):
1811 This symbol is set to 'struct direct' or 'struct dirent' depending on
1812 whether dirent is available or not. You should use this pseudo type to
1813 portably declare your directory entries.
1816 This variable contains the extension that is to be used for the
1817 dynamically loaded modules that perl generaties.
1820 This variable contains the name of the dynamic loading file that
1821 will be used with the package.
1823 doublesize (doublesize.U):
1824 This variable contains the value of the DOUBLESIZE symbol, which
1825 indicates to the C program how many bytes there are in a double.
1827 drand01 (randfunc.U):
1828 Indicates the macro to be used to generate normalized
1829 random numbers. Uses randfunc, often divided by
1830 (double) (((unsigned long) 1 << randbits)) in order to
1831 normalize the result.
1832 In C programs, the macro 'Drand01' is mapped to drand01.
1834 dynamic_ext (Extensions.U):
1835 This variable holds a list of XS extension files we want to
1836 link dynamically into the package. It is used by Makefile.
1838 eagain (nblock_io.U):
1839 This variable bears the symbolic errno code set by read() when no
1840 data is present on the file and non-blocking I/O was enabled (otherwise,
1841 read() blocks naturally).
1844 This variable conditionally defines EBCDIC if this
1845 system uses EBCDIC encoding. Among other things, this
1846 means that the character ranges are not contiguous.
1850 This variable is used internally by Configure to determine the
1851 full pathname (if any) of the echo program. After Configure runs,
1852 the value is reset to a plain "echo" and is not useful.
1855 This variable is used internally by Configure to determine the
1856 full pathname (if any) of the egrep program. After Configure runs,
1857 the value is reset to a plain "egrep" and is not useful.
1860 This variable is defined but not used by Configure.
1861 The value is a plain '' and is not useful.
1864 When running under Eunice this variable contains a command which will
1865 convert a shell script to the proper form of text file for it to be
1866 executable by the shell. On other systems it is a no-op.
1869 This is an old synonym for _exe.
1872 This variable is used internally by Configure to determine the
1873 full pathname (if any) of the expr program. After Configure runs,
1874 the value is reset to a plain "expr" and is not useful.
1876 extensions (Extensions.U):
1877 This variable holds a list of all extension files (both XS and
1878 non-xs linked into the package. It is propagated to Config.pm
1879 and is typically used to test whether a particular extesion
1882 fflushall (fflushall.U):
1883 This symbol, if defined, tells that to flush
1884 all pending stdio output one must loop through all
1885 the stdio file handles stored in an array and fflush them.
1886 Note that if fflushNULL is defined, fflushall will not
1887 even be probed for and will be left undefined.
1889 fflushNULL (fflushall.U):
1890 This symbol, if defined, tells that fflush(NULL) does flush
1891 all pending stdio output.
1894 This variable is defined but not used by Configure.
1895 The value is a plain '' and is not useful.
1897 firstmakefile (Unix.U):
1898 This variable defines the first file searched by make. On unix,
1899 it is makefile (then Makefile). On case-insensitive systems,
1900 it might be something else. This is only used to deal with
1901 convoluted make depend tricks.
1904 This variable is defined but not used by Configure.
1905 The value is a plain '' and is not useful.
1907 fpossize (fpossize.U):
1908 This variable contains the size of a fpostype in bytes.
1910 fpostype (fpostype.U):
1911 This variable defines Fpos_t to be something like fpos_t, long,
1912 uint, or whatever type is used to declare file positions in libc.
1914 freetype (mallocsrc.U):
1915 This variable contains the return type of free(). It is usually
1916 void, but occasionally int.
1919 This variable contains the full pathname to 'ar', whether or
1920 not the user has specified 'portability'. This is only used
1924 This variable contains the full pathname to 'csh', whether or
1925 not the user has specified 'portability'. This is only used
1926 in the compiled C program, and we assume that all systems which
1927 can share this executable will have the same full pathname to
1930 full_sed (Loc_sed.U):
1931 This variable contains the full pathname to 'sed', whether or
1932 not the user has specified 'portability'. This is only used
1933 in the compiled C program, and we assume that all systems which
1934 can share this executable will have the same full pathname to
1937 gccosandvers (gccvers.U):
1938 If GNU cc (gcc) is used, this variable the operating system and
1939 version used to compile the gcc. It is set to '' if not gcc,
1940 or if nothing useful can be parsed as the os version.
1942 gccversion (gccvers.U):
1943 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1944 indicate whether the compiler is version 1 or 2. This is used in
1945 setting some of the default cflags. It is set to '' if not gcc.
1948 This variable contains the format string used for printing a Gid_t.
1950 gidsign (gidsign.U):
1951 This variable contains the signedness of a gidtype.
1952 1 for unsigned, -1 for signed.
1954 gidsize (gidsize.U):
1955 This variable contains the size of a gidtype in bytes.
1957 gidtype (gidtype.U):
1958 This variable defines Gid_t to be something like gid_t, int,
1959 ushort, or whatever type is used to declare the return type
1960 of getgid(). Typically, it is the type of group ids in the kernel.
1963 This variable holds the general path (space-separated) used to
1964 find libraries. It may contain directories that do not exist on
1965 this platform, libpth is the cleaned-up version.
1968 This variable is used internally by Configure to determine the
1969 full pathname (if any) of the grep program. After Configure runs,
1970 the value is reset to a plain "grep" and is not useful.
1973 This variable contains a command that produces the text of the
1974 /etc/group file. This is normally "cat /etc/group", but can be
1975 "ypcat group" when NIS is used.
1976 On some systems, such as os390, there may be no equivalent
1977 command, in which case this variable is unset.
1979 groupstype (groupstype.U):
1980 This variable defines Groups_t to be something like gid_t, int,
1981 ushort, or whatever type is used for the second argument to
1982 getgroups() and setgroups(). Usually, this is the same as
1983 gidtype (gid_t), but sometimes it isn't.
1986 This variable is used internally by Configure to determine the
1987 full pathname (if any) of the gzip program. After Configure runs,
1988 the value is reset to a plain "gzip" and is not useful.
1990 h_fcntl (h_fcntl.U):
1991 This is variable gets set in various places to tell i_fcntl that
1992 <fcntl.h> should be included.
1994 h_sysfile (h_sysfile.U):
1995 This is variable gets set in various places to tell i_sys_file that
1996 <sys/file.h> should be included.
1999 Gives the type of hints used for previous answers. May be one of
2000 "default", "recommended" or "previous".
2003 This variable contains a command that produces the text of the
2004 /etc/hosts file. This is normally "cat /etc/hosts", but can be
2005 "ypcat hosts" when NIS is used.
2006 On some systems, such as os390, there may be no equivalent
2007 command, in which case this variable is unset.
2010 This variable is the size of an I16 in bytes.
2013 This variable contains the C type used for Perl's I16.
2016 This variable is the size of an I32 in bytes.
2019 This variable contains the C type used for Perl's I32.
2022 This variable is the size of an I64 in bytes.
2025 This variable contains the C type used for Perl's I64.
2028 This variable is the size of an I8 in bytes.
2031 This variable contains the C type used for Perl's I8.
2033 i_arpainet (i_arpainet.U):
2034 This variable conditionally defines the I_ARPA_INET symbol,
2035 and indicates whether a C program should include <arpa/inet.h>.
2037 i_bsdioctl (i_sysioctl.U):
2038 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
2039 indicates to the C program that <sys/bsdioctl.h> exists and should
2043 This variable conditionally defines the I_DB symbol, and indicates
2044 whether a C program may include Berkeley's DB include file <db.h>.
2047 This variable conditionally defines the I_DBM symbol, which
2048 indicates to the C program that <dbm.h> exists and should
2051 i_dirent (i_dirent.U):
2052 This variable conditionally defines I_DIRENT, which indicates
2053 to the C program that it should include <dirent.h>.
2056 This variable conditionally defines the I_DLD symbol, which
2057 indicates to the C program that <dld.h> (GNU dynamic loading)
2058 exists and should be included.
2060 i_dlfcn (i_dlfcn.U):
2061 This variable conditionally defines the I_DLFCN symbol, which
2062 indicates to the C program that <dlfcn.h> exists and should
2065 i_fcntl (i_fcntl.U):
2066 This variable controls the value of I_FCNTL (which tells
2067 the C program to include <fcntl.h>).
2069 i_float (i_float.U):
2070 This variable conditionally defines the I_FLOAT symbol, and indicates
2071 whether a C program may include <float.h> to get symbols like DBL_MAX
2072 or DBL_MIN, i.e. machine dependent floating point values.
2075 This variable conditionally defines the I_GDBM symbol, which
2076 indicates to the C program that <gdbm.h> exists and should
2080 This variable conditionally defines the I_GRP symbol, and indicates
2081 whether a C program should include <grp.h>.
2083 i_iconv (i_iconv.U):
2084 This variable conditionally defines the I_ICONV symbol, and indicates
2085 whether a C program should include <iconv.h>.
2087 i_ieeefp (i_ieeefp.U):
2088 This variable conditionally defines the I_IEEEFP symbol, and indicates
2089 whether a C program should include <ieeefp.h>.
2091 i_inttypes (i_inttypes.U):
2092 This variable conditionally defines the I_INTTYPES symbol,
2093 and indicates whether a C program should include <inttypes.h>.
2095 i_libutil (i_libutil.U):
2096 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2097 whether a C program should include <libutil.h>.
2099 i_limits (i_limits.U):
2100 This variable conditionally defines the I_LIMITS symbol, and indicates
2101 whether a C program may include <limits.h> to get symbols like WORD_BIT
2104 i_locale (i_locale.U):
2105 This variable conditionally defines the I_LOCALE symbol,
2106 and indicates whether a C program should include <locale.h>.
2108 i_machcthr (i_machcthr.U):
2109 This variable conditionally defines the I_MACH_CTHREADS symbol,
2110 and indicates whether a C program should include <mach/cthreads.h>.
2112 i_malloc (i_malloc.U):
2113 This variable conditionally defines the I_MALLOC symbol, and indicates
2114 whether a C program should include <malloc.h>.
2117 This variable conditionally defines the I_MATH symbol, and indicates
2118 whether a C program may include <math.h>.
2120 i_memory (i_memory.U):
2121 This variable conditionally defines the I_MEMORY symbol, and indicates
2122 whether a C program should include <memory.h>.
2124 i_mntent (i_mntent.U):
2125 This variable conditionally defines the I_MNTENT symbol, and indicates
2126 whether a C program should include <mntent.h>.
2129 This variable conditionally defines the I_NDBM symbol, which
2130 indicates to the C program that <ndbm.h> exists and should
2133 i_netdb (i_netdb.U):
2134 This variable conditionally defines the I_NETDB symbol, and indicates
2135 whether a C program should include <netdb.h>.
2137 i_neterrno (i_neterrno.U):
2138 This variable conditionally defines the I_NET_ERRNO symbol, which
2139 indicates to the C program that <net/errno.h> exists and should
2142 i_netinettcp (i_netinettcp.U):
2143 This variable conditionally defines the I_NETINET_TCP symbol,
2144 and indicates whether a C program should include <netinet/tcp.h>.
2147 This variable conditionally defines I_NETINET_IN, which indicates
2148 to the C program that it should include <netinet/in.h>. Otherwise,
2149 you may try <sys/in.h>.
2152 This variable conditionally defines the I_POLL symbol, and indicates
2153 whether a C program should include <poll.h>.
2156 This variable conditionally defines the I_PROT symbol, and indicates
2157 whether a C program should include <prot.h>.
2159 i_pthread (i_pthread.U):
2160 This variable conditionally defines the I_PTHREAD symbol,
2161 and indicates whether a C program should include <pthread.h>.
2164 This variable conditionally defines I_PWD, which indicates
2165 to the C program that it should include <pwd.h>.
2167 i_rpcsvcdbm (i_dbm.U):
2168 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2169 indicates to the C program that <rpcsvc/dbm.h> exists and should
2170 be included. Some System V systems might need this instead of <dbm.h>.
2173 This variable conditionally defines the I_SFIO symbol,
2174 and indicates whether a C program should include <sfio.h>.
2176 i_sgtty (i_termio.U):
2177 This variable conditionally defines the I_SGTTY symbol, which
2178 indicates to the C program that it should include <sgtty.h> rather
2181 i_shadow (i_shadow.U):
2182 This variable conditionally defines the I_SHADOW symbol, and indicates
2183 whether a C program should include <shadow.h>.
2185 i_socks (i_socks.U):
2186 This variable conditionally defines the I_SOCKS symbol, and indicates
2187 whether a C program should include <socks.h>.
2189 i_stdarg (i_varhdr.U):
2190 This variable conditionally defines the I_STDARG symbol, which
2191 indicates to the C program that <stdarg.h> exists and should
2194 i_stddef (i_stddef.U):
2195 This variable conditionally defines the I_STDDEF symbol, which
2196 indicates to the C program that <stddef.h> exists and should
2199 i_stdlib (i_stdlib.U):
2200 This variable conditionally defines the I_STDLIB symbol, which
2201 indicates to the C program that <stdlib.h> exists and should
2204 i_string (i_string.U):
2205 This variable conditionally defines the I_STRING symbol, which
2206 indicates that <string.h> should be included rather than <strings.h>.
2208 i_sunmath (i_sunmath.U):
2209 This variable conditionally defines the I_SUNMATH symbol, and indicates
2210 whether a C program should include <sunmath.h>.
2212 i_sysaccess (i_sysaccess.U):
2213 This variable conditionally defines the I_SYS_ACCESS symbol,
2214 and indicates whether a C program should include <sys/access.h>.
2216 i_sysdir (i_sysdir.U):
2217 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2218 whether a C program should include <sys/dir.h>.
2220 i_sysfile (i_sysfile.U):
2221 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2222 whether a C program should include <sys/file.h> to get R_OK and friends.
2224 i_sysfilio (i_sysioctl.U):
2225 This variable conditionally defines the I_SYS_FILIO symbol, which
2226 indicates to the C program that <sys/filio.h> exists and should
2227 be included in preference to <sys/ioctl.h>.
2230 This variable conditionally defines I_SYS_IN, which indicates
2231 to the C program that it should include <sys/in.h> instead of
2234 i_sysioctl (i_sysioctl.U):
2235 This variable conditionally defines the I_SYS_IOCTL symbol, which
2236 indicates to the C program that <sys/ioctl.h> exists and should
2239 i_syslog (i_syslog.U):
2240 This variable conditionally defines the I_SYSLOG symbol,
2241 and indicates whether a C program should include <syslog.h>.
2243 i_sysmman (i_sysmman.U):
2244 This variable conditionally defines the I_SYS_MMAN symbol, and
2245 indicates whether a C program should include <sys/mman.h>.
2247 i_sysmode (i_sysmode.U):
2248 This variable conditionally defines the I_SYSMODE symbol,
2249 and indicates whether a C program should include <sys/mode.h>.
2251 i_sysmount (i_sysmount.U):
2252 This variable conditionally defines the I_SYSMOUNT symbol,
2253 and indicates whether a C program should include <sys/mount.h>.
2255 i_sysndir (i_sysndir.U):
2256 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2257 whether a C program should include <sys/ndir.h>.
2259 i_sysparam (i_sysparam.U):
2260 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2261 whether a C program should include <sys/param.h>.
2263 i_sysresrc (i_sysresrc.U):
2264 This variable conditionally defines the I_SYS_RESOURCE symbol,
2265 and indicates whether a C program should include <sys/resource.h>.
2267 i_syssecrt (i_syssecrt.U):
2268 This variable conditionally defines the I_SYS_SECURITY symbol,
2269 and indicates whether a C program should include <sys/security.h>.
2271 i_sysselct (i_sysselct.U):
2272 This variable conditionally defines I_SYS_SELECT, which indicates
2273 to the C program that it should include <sys/select.h> in order to
2274 get the definition of struct timeval.
2276 i_syssockio (i_sysioctl.U):
2277 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2278 C program that socket ioctl codes may be found in <sys/sockio.h>
2279 instead of <sys/ioctl.h>.
2281 i_sysstat (i_sysstat.U):
2282 This variable conditionally defines the I_SYS_STAT symbol,
2283 and indicates whether a C program should include <sys/stat.h>.
2285 i_sysstatfs (i_sysstatfs.U):
2286 This variable conditionally defines the I_SYSSTATFS symbol,
2287 and indicates whether a C program should include <sys/statfs.h>.
2289 i_sysstatvfs (i_sysstatvfs.U):
2290 This variable conditionally defines the I_SYSSTATVFS symbol,
2291 and indicates whether a C program should include <sys/statvfs.h>.
2293 i_systime (i_time.U):
2294 This variable conditionally defines I_SYS_TIME, which indicates
2295 to the C program that it should include <sys/time.h>.
2297 i_systimek (i_time.U):
2298 This variable conditionally defines I_SYS_TIME_KERNEL, which
2299 indicates to the C program that it should include <sys/time.h>
2300 with KERNEL defined.
2302 i_systimes (i_systimes.U):
2303 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2304 whether a C program should include <sys/times.h>.
2306 i_systypes (i_systypes.U):
2307 This variable conditionally defines the I_SYS_TYPES symbol,
2308 and indicates whether a C program should include <sys/types.h>.
2310 i_sysuio (i_sysuio.U):
2311 This variable conditionally defines the I_SYSUIO symbol, and indicates
2312 whether a C program should include <sys/uio.h>.
2314 i_sysun (i_sysun.U):
2315 This variable conditionally defines I_SYS_UN, which indicates
2316 to the C program that it should include <sys/un.h> to get UNIX
2317 domain socket definitions.
2319 i_sysutsname (i_sysutsname.U):
2320 This variable conditionally defines the I_SYSUTSNAME symbol,
2321 and indicates whether a C program should include <sys/utsname.h>.
2323 i_sysvfs (i_sysvfs.U):
2324 This variable conditionally defines the I_SYSVFS symbol,
2325 and indicates whether a C program should include <sys/vfs.h>.
2327 i_syswait (i_syswait.U):
2328 This variable conditionally defines I_SYS_WAIT, which indicates
2329 to the C program that it should include <sys/wait.h>.
2331 i_termio (i_termio.U):
2332 This variable conditionally defines the I_TERMIO symbol, which
2333 indicates to the C program that it should include <termio.h> rather
2336 i_termios (i_termio.U):
2337 This variable conditionally defines the I_TERMIOS symbol, which
2338 indicates to the C program that the POSIX <termios.h> file is
2342 This variable conditionally defines I_TIME, which indicates
2343 to the C program that it should include <time.h>.
2345 i_unistd (i_unistd.U):
2346 This variable conditionally defines the I_UNISTD symbol, and indicates
2347 whether a C program should include <unistd.h>.
2349 i_ustat (i_ustat.U):
2350 This variable conditionally defines the I_USTAT symbol, and indicates
2351 whether a C program should include <ustat.h>.
2353 i_utime (i_utime.U):
2354 This variable conditionally defines the I_UTIME symbol, and indicates
2355 whether a C program should include <utime.h>.
2357 i_values (i_values.U):
2358 This variable conditionally defines the I_VALUES symbol, and indicates
2359 whether a C program may include <values.h> to get symbols like MAXLONG
2362 i_varargs (i_varhdr.U):
2363 This variable conditionally defines I_VARARGS, which indicates
2364 to the C program that it should include <varargs.h>.
2366 i_varhdr (i_varhdr.U):
2367 Contains the name of the header to be included to get va_dcl definition.
2368 Typically one of varargs.h or stdarg.h.
2370 i_vfork (i_vfork.U):
2371 This variable conditionally defines the I_VFORK symbol, and indicates
2372 whether a C program should include vfork.h.
2374 ignore_versioned_solibs (libs.U):
2375 This variable should be non-empty if non-versioned shared
2376 libraries (libfoo.so.x.y) are to be ignored (because they
2377 cannot be linked against).
2379 inc_version_list (inc_version_list.U):
2380 This variable specifies the list of subdirectories in over
2381 which perl.c:incpush() and lib/lib.pm will automatically
2382 search when adding directories to @INC. The elements in
2383 the list are separated by spaces. This is only useful
2384 if you have a perl library directory tree structured like the
2385 default one. See INSTALL for how this works. The versioned
2386 site_perl directory was introduced in 5.005, so that is the
2387 lowest possible value.
2389 inc_version_list_init (inc_version_list.U):
2390 This variable holds the same list as inc_version_list, but
2391 each item is enclosed in double quotes and separated by commas,
2392 suitable for use in the PERL_INC_VERSION_LIST initialization.
2395 This variable must preceed the normal include path to get hte
2396 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2397 Value can be "" or "/bsd43" on mips.
2400 This variable is defined but not used by Configure.
2401 The value is a plain '' and is not useful.
2403 installarchlib (archlib.U):
2404 This variable is really the same as archlibexp but may differ on
2405 those systems using AFS. For extra portability, only this variable
2406 should be used in makefiles.
2409 This variable is the same as binexp unless AFS is running in which case
2410 the user is explicitely prompted for it. This variable should always
2411 be used in your makefiles for maximum portability.
2413 installman1dir (man1dir.U):
2414 This variable is really the same as man1direxp, unless you are using
2415 AFS in which case it points to the read/write location whereas
2416 man1direxp only points to the read-only access location. For extra
2417 portability, you should only use this variable within your makefiles.
2419 installman3dir (man3dir.U):
2420 This variable is really the same as man3direxp, unless you are using
2421 AFS in which case it points to the read/write location whereas
2422 man3direxp only points to the read-only access location. For extra
2423 portability, you should only use this variable within your makefiles.
2425 installprefix (installprefix.U):
2426 This variable holds the name of the directory below which
2427 "make install" will install the package. For most users, this
2428 is the same as prefix. However, it is useful for
2429 installing the software into a different (usually temporary)
2430 location after which it can be bundled up and moved somehow
2431 to the final location specified by prefix.
2433 installprefixexp (installprefix.U):
2434 This variable holds the full absolute path of installprefix
2435 with all ~-expansion done.
2437 installprivlib (privlib.U):
2438 This variable is really the same as privlibexp but may differ on
2439 those systems using AFS. For extra portability, only this variable
2440 should be used in makefiles.
2442 installscript (scriptdir.U):
2443 This variable is usually the same as scriptdirexp, unless you are on
2444 a system running AFS, in which case they may differ slightly. You
2445 should always use this variable within your makefiles for portability.
2447 installsitearch (sitearch.U):
2448 This variable is really the same as sitearchexp but may differ on
2449 those systems using AFS. For extra portability, only this variable
2450 should be used in makefiles.
2452 installsitebin (sitebin.U):
2453 This variable is usually the same as sitebinexp, unless you are on
2454 a system running AFS, in which case they may differ slightly. You
2455 should always use this variable within your makefiles for portability.
2457 installsitelib (sitelib.U):
2458 This variable is really the same as sitelibexp but may differ on
2459 those systems using AFS. For extra portability, only this variable
2460 should be used in makefiles.
2462 installstyle (installstyle.U):
2463 This variable describes the "style" of the perl installation.
2464 This is intended to be useful for tools that need to
2465 manipulate entire perl distributions. Perl itself doesn't use
2466 this to find its libraries -- the library directories are
2467 stored directly in Config.pm. Currently, there are only two
2468 styles: "lib" and "lib/perl5". The default library locations
2469 (e.g. privlib, sitelib) are either $prefix/lib or
2470 $prefix/lib/perl5. The former is useful if $prefix is a
2471 directory dedicated to perl (e.g. /opt/perl), while the latter
2472 is useful if $prefix is shared by many packages, e.g. if
2474 This may later be extended to include other information, so
2475 be careful with pattern-matching on the results.
2476 For compatibility with perl5.005 and earlier, the default
2477 setting is based on whether or not $prefix contains the string
2480 installusrbinperl (instubperl.U):
2481 This variable tells whether Perl should be installed also as
2482 /usr/bin/perl in addition to
2485 installvendorarch (vendorarch.U):
2486 This variable is really the same as vendorarchexp but may differ on
2487 those systems using AFS. For extra portability, only this variable
2488 should be used in makefiles.
2490 installvendorbin (vendorbin.U):
2491 This variable is really the same as vendorbinexp but may differ on
2492 those systems using AFS. For extra portability, only this variable
2493 should be used in makefiles.
2495 installvendorlib (vendorlib.U):
2496 This variable is really the same as vendorlibexp but may differ on
2497 those systems using AFS. For extra portability, only this variable
2498 should be used in makefiles.
2500 intsize (intsize.U):
2501 This variable contains the value of the INTSIZE symbol, which
2502 indicates to the C program how many bytes there are in an int.
2504 issymlink (issymlink.U):
2505 This variable holds the test command to test for a symbolic link
2506 (if they are supported). Typical values include 'test -h' and
2509 ivdformat (perlxvf.U):
2510 This variable contains the format string used for printing
2511 a Perl IV as a signed decimal integer.
2514 This variable is the size of an IV in bytes.
2517 This variable contains the C type used for Perl's IV.
2519 known_extensions (Extensions.U):
2520 This variable holds a list of all XS extensions included in
2524 This variable is defined but not used by Configure.
2525 The value is a plain '' and is not useful.
2528 This variable indicates the program to be used to link
2529 libraries for dynamic loading. On some systems, it is 'ld'.
2530 On ELF systems, it should be $cc. Mostly, we'll try to respect
2531 the hint file setting.
2533 lddlflags (dlsrc.U):
2534 This variable contains any special flags that might need to be
2535 passed to $ld to create a shared library suitable for dynamic
2536 loading. It is up to the makefile to use it. For hpux, it
2537 should be '-b'. For sunos 4.1, it is empty.
2539 ldflags (ccflags.U):
2540 This variable contains any additional C loader flags desired by
2541 the user. It is up to the Makefile to use this.
2543 ldflags_uselargefiles (uselfs.U):
2544 This variable contains the loader flags needed by large file builds
2545 and added to ldflags by hints files.
2547 ldlibpthname (libperl.U):
2548 This variable holds the name of the shared library
2549 search path, often LD_LIBRARY_PATH. To get an empty
2550 string, the hints file must set this to 'none'.
2553 This variable is used internally by Configure to determine the
2554 full pathname (if any) of the less program. After Configure runs,
2555 the value is reset to a plain "less" and is not useful.
2558 This is an old synonym for _a.
2561 This variable contains the location of the C library.
2563 libperl (libperl.U):
2564 The perl executable is obtained by linking perlmain.c with
2565 libperl, any static extensions (usually just DynaLoader),
2566 and any other libraries needed on this system. libperl
2567 is usually libperl.a, but can also be libperl.so.xxx if
2568 the user wishes to build a perl executable with a shared
2572 This variable holds the general path (space-separated) used to find
2573 libraries. It is intended to be used by other units.
2576 This variable holds the additional libraries we want to use.
2577 It is up to the Makefile to deal with it.
2580 This variable holds the directory names aka dirnames of the libraries
2581 we found and accepted, duplicates are removed.
2584 This variable holds the filenames aka basenames of the libraries
2585 we found and accepted.
2588 This variable holds the full pathnames of the libraries
2589 we found and accepted.
2592 This variable holds the directory names probed for libraries.
2594 libswanted (Myinit.U):
2595 This variable holds a list of all the libraries we want to
2596 search. The order is chosen to pick up the c library
2597 ahead of ucb or bsd libraries for SVR4.
2599 libswanted_uselargefiles (uselfs.U):
2600 This variable contains the libraries needed by large file builds
2601 and added to ldflags by hints files. It is a space separated list
2602 of the library names without the "lib" prefix or any suffix, just
2606 This variable is defined but not used by Configure.
2607 The value is a plain '' and is not useful.
2610 This variable is defined but not used by Configure.
2611 The value is a plain '' and is not useful.
2613 lkflags (ccflags.U):
2614 This variable contains any additional C partial linker flags desired by
2615 the user. It is up to the Makefile to use this.
2618 This variable is used internally by Configure to determine the
2619 full pathname (if any) of the ln program. After Configure runs,
2620 the value is reset to a plain "ln" and is not useful.
2623 This variable holds the name of the command to make
2624 symbolic links (if they are supported). It can be used
2625 in the Makefile. It is either 'ln -s' or 'ln'
2627 locincpth (ccflags.U):
2628 This variable contains a list of additional directories to be
2629 searched by the compiler. The appropriate '-I' directives will
2630 be added to ccflags. This is intended to simplify setting
2631 local directories from the Configure command line.
2632 It's not much, but it parallels the loclibpth stuff in libpth.U.
2634 loclibpth (libpth.U):
2635 This variable holds the paths (space-separated) used to find local
2636 libraries. It is prepended to libpth, and is intended to be easily
2637 set from the command line.
2639 longdblsize (d_longdbl.U):
2640 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2641 indicates to the C program how many bytes there are in a long double,
2642 if this system supports long doubles.
2644 longlongsize (d_longlong.U):
2645 This variable contains the value of the LONGLONGSIZE symbol, which
2646 indicates to the C program how many bytes there are in a long long,
2647 if this system supports long long.
2649 longsize (intsize.U):
2650 This variable contains the value of the LONGSIZE symbol, which
2651 indicates to the C program how many bytes there are in a long.
2654 This variable is defined but not used by Configure.
2655 The value is a plain '' and is not useful.
2658 This variable is defined but not used by Configure.
2659 The value is a plain '' and is not useful.
2662 This variable is used internally by Configure to determine the
2663 full pathname (if any) of the ls program. After Configure runs,
2664 the value is reset to a plain "ls" and is not useful.
2666 lseeksize (lseektype.U):
2667 This variable defines lseektype to be something like off_t, long,
2668 or whatever type is used to declare lseek offset's type in the
2669 kernel (which also appears to be lseek's return type).
2671 lseektype (lseektype.U):
2672 This variable defines lseektype to be something like off_t, long,
2673 or whatever type is used to declare lseek offset's type in the
2674 kernel (which also appears to be lseek's return type).
2677 This variable is defined but not used by Configure.
2678 The value is a plain '' and is not useful.
2681 This variable is defined but not used by Configure.
2682 The value is a plain '' and is not useful.
2685 This variable is used internally by Configure to determine the
2686 full pathname (if any) of the make program. After Configure runs,
2687 the value is reset to a plain "make" and is not useful.
2689 make_set_make (make.U):
2690 Some versions of 'make' set the variable MAKE. Others do not.
2691 This variable contains the string to be included in Makefile.SH
2692 so that MAKE is set if needed, and not if not needed.
2693 Possible values are:
2694 make_set_make='#' # If your make program handles this for you,
2695 make_set_make="MAKE=$make" # if it doesn't.
2696 I used a comment character so that we can distinguish a
2697 'set' value (from a previous config.sh or Configure '-D' option)
2698 from an uncomputed value.
2700 mallocobj (mallocsrc.U):
2701 This variable contains the name of the malloc.o that this package
2702 generates, if that malloc.o is preferred over the system malloc.
2703 Otherwise the value is null. This variable is intended for generating
2704 Makefiles. See mallocsrc.
2706 mallocsrc (mallocsrc.U):
2707 This variable contains the name of the malloc.c that comes with
2708 the package, if that malloc.c is preferred over the system malloc.
2709 Otherwise the value is null. This variable is intended for generating
2712 malloctype (mallocsrc.U):
2713 This variable contains the kind of ptr returned by malloc and realloc.
2715 man1dir (man1dir.U):
2716 This variable contains the name of the directory in which manual
2717 source pages are to be put. It is the responsibility of the
2718 Makefile.SH to get the value of this into the proper command.
2719 You must be prepared to do the ~name expansion yourself.
2721 man1direxp (man1dir.U):
2722 This variable is the same as the man1dir variable, but is filename
2723 expanded at configuration time, for convenient use in makefiles.
2725 man1ext (man1dir.U):
2726 This variable contains the extension that the manual page should
2727 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2730 man3dir (man3dir.U):
2731 This variable contains the name of the directory in which manual
2732 source pages are to be put. It is the responsibility of the
2733 Makefile.SH to get the value of this into the proper command.
2734 You must be prepared to do the ~name expansion yourself.
2736 man3direxp (man3dir.U):
2737 This variable is the same as the man3dir variable, but is filename
2738 expanded at configuration time, for convenient use in makefiles.
2740 man3ext (man3dir.U):
2741 This variable contains the extension that the manual page should
2742 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2746 This variable is used internally by Configure to determine the
2747 full pathname (if any) of the Mcc program. After Configure runs,
2748 the value is reset to a plain "Mcc" and is not useful.
2750 mips_type (usrinc.U):
2751 This variable holds the environment type for the mips system.
2752 Possible values are "BSD 4.3" and "System V".
2755 This variable is used internally by Configure to determine the
2756 full pathname (if any) of the mkdir program. After Configure runs,
2757 the value is reset to a plain "mkdir" and is not useful.
2759 mmaptype (d_mmap.U):
2760 This symbol contains the type of pointer returned by mmap()
2761 (and simultaneously the type of the first argument).
2762 It can be 'void *' or 'caddr_t'.
2764 modetype (modetype.U):
2765 This variable defines modetype to be something like mode_t,
2766 int, unsigned short, or whatever type is used to declare file
2767 modes for system calls.
2770 This variable is used internally by Configure to determine the
2771 full pathname (if any) of the more program. After Configure runs,
2772 the value is reset to a plain "more" and is not useful.
2774 multiarch (multiarch.U):
2775 This variable conditionally defines the MULTIARCH symbol
2776 which signifies the presence of multiplatform files.
2777 This is normally set by hints files.
2780 This variable is defined but not used by Configure.
2781 The value is a plain '' and is not useful.
2783 myarchname (archname.U):
2784 This variable holds the architecture name computed by Configure in
2785 a previous run. It is not intended to be perused by any user and
2786 should never be set in a hint file.
2788 mydomain (myhostname.U):
2789 This variable contains the eventual value of the MYDOMAIN symbol,
2790 which is the domain of the host the program is going to run on.
2791 The domain must be appended to myhostname to form a complete host name.
2792 The dot comes with mydomain, and need not be supplied by the program.
2794 myhostname (myhostname.U):
2795 This variable contains the eventual value of the MYHOSTNAME symbol,
2796 which is the name of the host the program is going to run on.
2797 The domain is not kept with hostname, but must be gotten from mydomain.
2798 The dot comes with mydomain, and need not be supplied by the program.
2800 myuname (Oldconfig.U):
2801 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2802 pseudo variables assignments in the output are stripped, thank you. The
2803 whole thing is then lower-cased.
2806 This variable contains the '-n' flag if that is what causes the echo
2807 command to suppress newline. Otherwise it is null. Correct usage is
2808 $echo $n "prompt for a question: $c".
2810 need_va_copy (need_va_copy.U):
2811 This symbol, if defined, indicates that the system stores
2812 the variable argument list datatype, va_list, in a format
2813 that cannot be copied by simple assignment, so that some
2814 other means must be used when copying is required.
2815 As such systems vary in their provision (or non-provision)
2816 of copying mechanisms, handy.h defines a platform-
2817 independent macro, Perl_va_copy(src, dst), to do the job.
2819 netdb_hlen_type (netdbtype.U):
2820 This variable holds the type used for the 2nd argument to
2821 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2822 This is only useful if you have gethostbyaddr(), naturally.
2824 netdb_host_type (netdbtype.U):
2825 This variable holds the type used for the 1st argument to
2826 gethostbyaddr(). Usually, this is char * or void *, possibly
2827 with or without a const prefix.
2828 This is only useful if you have gethostbyaddr(), naturally.
2830 netdb_name_type (netdbtype.U):
2831 This variable holds the type used for the argument to
2832 gethostbyname(). Usually, this is char * or const char *.
2833 This is only useful if you have gethostbyname(), naturally.
2835 netdb_net_type (netdbtype.U):
2836 This variable holds the type used for the 1st argument to
2837 getnetbyaddr(). Usually, this is int or long.
2838 This is only useful if you have getnetbyaddr(), naturally.
2841 This variable is used internally by Configure to determine the
2842 full pathname (if any) of the nm program. After Configure runs,
2843 the value is reset to a plain "nm" and is not useful.
2846 This variable holds the options that may be necessary for nm.
2848 nm_so_opt (usenm.U):
2849 This variable holds the options that may be necessary for nm
2850 to work on a shared library but that can not be used on an
2851 archive library. Currently, this is only used by Linux, where
2852 nm --dynamic is *required* to get symbols from an ELF library which
2853 has been stripped, but nm --dynamic is *fatal* on an archive library.
2854 Maybe Linux should just always set usenm=false.
2856 nonxs_ext (Extensions.U):
2857 This variable holds a list of all non-xs extensions included
2858 in the package. All of them will be built.
2861 This variable is used internally by Configure to determine the
2862 full pathname (if any) of the nroff program. After Configure runs,
2863 the value is reset to a plain "nroff" and is not useful.
2865 nveformat (perlxvf.U):
2866 This variable contains the format string used for printing
2867 a Perl NV using %e-ish floating point format.
2869 nvEUformat (perlxvf.U):
2870 This variable contains the format string used for printing
2871 a Perl NV using %E-ish floating point format.
2873 nvfformat (perlxvf.U):
2874 This variable confains the format string used for printing
2875 a Perl NV using %f-ish floating point format.
2877 nvFUformat (perlxvf.U):
2878 This variable confains the format string used for printing
2879 a Perl NV using %F-ish floating point format.
2881 nvgformat (perlxvf.U):
2882 This variable contains the format string used for printing
2883 a Perl NV using %g-ish floating point format.
2885 nvGUformat (perlxvf.U):
2886 This variable contains the format string used for printing
2887 a Perl NV using %G-ish floating point format.
2890 This variable is the size of an NV in bytes.
2893 This variable contains the C type used for Perl's NV.
2895 o_nonblock (nblock_io.U):
2896 This variable bears the symbol value to be used during open() or fcntl()
2897 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2898 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2899 but that is only supported by some devices.
2902 This is an old synonym for _o.
2904 old_pthread_create_joinable (d_pthrattrj.U):
2905 This variable defines the constant to use for creating joinable
2906 (aka undetached) pthreads. Unused if pthread.h defines
2907 PTHREAD_CREATE_JOINABLE. If used, possible values are
2908 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2910 optimize (ccflags.U):
2911 This variable contains any optimizer/debugger flag that should be used.
2912 It is up to the Makefile to use it.
2914 orderlib (orderlib.U):
2915 This variable is "true" if the components of libraries must be ordered
2916 (with `lorder $* | tsort`) before placing them in an archive. Set to
2917 "false" if ranlib or ar can generate random libraries.
2919 osname (Oldconfig.U):
2920 This variable contains the operating system name (e.g. sunos,
2921 solaris, hpux, etc.). It can be useful later on for setting
2922 defaults. Any spaces are replaced with underscores. It is set
2923 to a null string if we can't figure it out.
2925 osvers (Oldconfig.U):
2926 This variable contains the operating system version (e.g.
2927 4.1.3, 5.2, etc.). It is primarily used for helping select
2928 an appropriate hints file, but might be useful elsewhere for
2929 setting defaults. It is set to '' if we can't figure it out.
2930 We try to be flexible about how much of the version number
2931 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2932 same for this package, hints files might just be os_4.0 or
2933 os_4.1, etc., not keeping separate files for each little release.
2935 otherlibdirs (otherlibdirs.U):
2936 This variable contains a colon-separated set of paths for the perl
2937 binary to search for additional library files or modules.
2938 These directories will be tacked to the end of @INC.
2939 Perl will automatically search below each path for version-
2940 and architecture-specific directories. See inc_version_list
2942 A value of ' ' means 'none' and is used to preserve this value
2943 for the next run through Configure.
2945 package (package.U):
2946 This variable contains the name of the package being constructed.
2947 It is primarily intended for the use of later Configure units.
2950 This variable contains the name of the preferred pager on the system.
2951 Usual values are (the full pathnames of) more, less, pg, or cat.
2954 This variable contains a command that produces the text of the
2955 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2956 "ypcat passwd" when NIS is used.
2957 On some systems, such as os390, there may be no equivalent
2958 command, in which case this variable is unset.
2960 patchlevel (patchlevel.U):
2961 The patchlevel level of this package.
2962 The value of patchlevel comes from the patchlevel.h file.
2963 In a version number such as 5.6.1, this is the "6".
2964 In patchlevel.h, this is referred to as "PERL_VERSION".
2967 This is an old synonym for p_ in Head.U, the character
2968 used to separate elements in the command shell search PATH.
2971 This variable contains the full path (if any) to a previously
2972 installed perl5.005 or later suitable for running the script
2973 to determine inc_version_list.
2976 This variable is defined but not used by Configure.
2977 The value is a plain '' and is not useful.
2979 PERL_REVISION (Oldsyms.U):
2980 In a Perl version number such as 5.6.2, this is the 5.
2981 This value is manually set in patchlevel.h
2983 PERL_SUBVERSION (Oldsyms.U):
2984 In a Perl version number such as 5.6.2, this is the 2.
2985 Values greater than 50 represent potentially unstable
2986 development subversions.
2987 This value is manually set in patchlevel.h
2989 PERL_VERSION (Oldsyms.U):
2990 In a Perl version number such as 5.6.2, this is the 6.
2991 This value is manually set in patchlevel.h
2993 perladmin (perladmin.U):
2994 Electronic mail address of the perl5 administrator.
2997 The list of libraries needed by Perl only (any libraries needed
2998 by extensions only will by dropped, if using dynamic loading).
3000 perlpath (perlpath.U):
3001 This variable contains the eventual value of the PERLPATH symbol,
3002 which contains the name of the perl interpreter to be used in
3003 shell scripts and in the "eval 'exec'" idiom.
3006 This variable is used internally by Configure to determine the
3007 full pathname (if any) of the pg program. After Configure runs,
3008 the value is reset to a plain "pg" and is not useful.
3010 phostname (myhostname.U):
3011 This variable contains the eventual value of the PHOSTNAME symbol,
3012 which is a command that can be fed to popen() to get the host name.
3013 The program should probably not presume that the domain is or isn't
3016 pidtype (pidtype.U):
3017 This variable defines PIDTYPE to be something like pid_t, int,
3018 ushort, or whatever type is used to declare process ids in the kernel.
3021 Holds the private path used by Configure to find out the libraries.
3022 Its value is prepend to libpth. This variable takes care of special
3023 machines, like the mips. Usually, it should be empty.
3025 pm_apiversion (xs_apiversion.U):
3026 This variable contains the version of the oldest perl
3027 compatible with the present perl. (That is, pure perl modules
3028 written for $pm_apiversion will still work for the current
3029 version). perl.c:incpush() and lib/lib.pm will automatically
3030 search in $sitelib for older directories across major versions
3031 back to pm_apiversion. This is only useful if you have a perl
3032 library directory tree structured like the default one. The
3033 versioned site_perl library was introduced in 5.005, so that's
3034 the default setting for this variable. It's hard to imagine
3035 it changing before Perl6. It is included here for symmetry
3036 with xs_apiveprsion -- the searching algorithms will
3037 (presumably) be similar.
3038 See the INSTALL file for how this works.
3041 This variable is defined but not used by Configure.
3042 The value is a plain '' and is not useful.
3045 This variable is defined but not used by Configure.
3046 The value is a plain '' and is not useful.
3049 This variable holds the name of the directory below which the
3050 user will install the package. Usually, this is /usr/local, and
3051 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3052 man pages in /usr/local/man, etc. It is only used to set defaults
3053 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3055 prefixexp (prefix.U):
3056 This variable holds the full absolute path of the directory below
3057 which the user will install the package. Derived from prefix.
3059 privlib (privlib.U):
3060 This variable contains the eventual value of the PRIVLIB symbol,
3061 which is the name of the private library for this package. It may
3062 have a ~ on the front. It is up to the makefile to eventually create
3063 this directory while performing installation (with ~ substitution).
3065 privlibexp (privlib.U):
3066 This variable is the ~name expanded version of privlib, so that you
3067 may use it directly in Makefiles or shell scripts.
3069 prototype (prototype.U):
3070 This variable holds the eventual value of CAN_PROTOTYPE, which
3071 indicates the C compiler can handle funciton prototypes.
3073 ptrsize (ptrsize.U):
3074 This variable contains the value of the PTRSIZE symbol, which
3075 indicates to the C program how many bytes there are in a pointer.
3077 quadkind (quadtype.U):
3078 This variable, if defined, encodes the type of a quad:
3079 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3081 quadtype (quadtype.U):
3082 This variable defines Quad_t to be something like long, int,
3083 long long, int64_t, or whatever type is used for 64-bit integers.
3085 randbits (randfunc.U):
3086 Indicates how many bits are produced by the function used to
3087 generate normalized random numbers.
3089 randfunc (randfunc.U):
3090 Indicates the name of the random number function to use.
3091 Values include drand48, random, and rand. In C programs,
3092 the 'Drand01' macro is defined to generate uniformly distributed
3093 random numbers over the range [0., 1.[ (see drand01 and nrand).
3095 randseedtype (randfunc.U):
3096 Indicates the type of the argument of the seedfunc.
3098 ranlib (orderlib.U):
3099 This variable is set to the pathname of the ranlib program, if it is
3100 needed to generate random libraries. Set to ":" if ar can generate
3101 random libraries or if random libraries are not supported
3103 rd_nodata (nblock_io.U):
3104 This variable holds the return code from read() when no data is
3105 present. It should be -1, but some systems return 0 when O_NDELAY is
3106 used, which is a shame because you cannot make the difference between
3107 no data and an EOF.. Sigh!
3109 revision (patchlevel.U):
3110 The value of revision comes from the patchlevel.h file.
3111 In a version number such as 5.6.1, this is the "5".
3112 In patchlevel.h, this is referred to as "PERL_REVISION".
3115 This variable is used internally by Configure to determine the
3116 full pathname (if any) of the rm program. After Configure runs,
3117 the value is reset to a plain "rm" and is not useful.
3120 This variable is defined but not used by Configure.
3121 The value is a plain '' and is not useful.
3124 This variable contains 'true' or 'false' depending whether the
3125 nm extraction should be performed or not, according to the value
3126 of usenm and the flags on the Configure command line.
3128 sched_yield (d_pthread_y.U):
3129 This variable defines the way to yield the execution
3130 of the current thread.
3132 scriptdir (scriptdir.U):
3133 This variable holds the name of the directory in which the user wants
3134 to put publicly scripts for the package in question. It is either
3135 the same directory as for binaries, or a special one that can be
3136 mounted across different architectures, like /usr/share. Programs
3137 must be prepared to deal with ~name expansion.
3139 scriptdirexp (scriptdir.U):
3140 This variable is the same as scriptdir, but is filename expanded
3141 at configuration time, for programs not wanting to bother with it.
3144 This variable is used internally by Configure to determine the
3145 full pathname (if any) of the sed program. After Configure runs,
3146 the value is reset to a plain "sed" and is not useful.
3148 seedfunc (randfunc.U):
3149 Indicates the random number generating seed function.
3150 Values include srand48, srandom, and srand.
3152 selectminbits (selectminbits.U):
3153 This variable holds the minimum number of bits operated by select.
3154 That is, if you do select(n, ...), how many bits at least will be
3155 cleared in the masks if some activity is detected. Usually this
3156 is either n or 32*ceil(n/32), especially many little-endians do
3157 the latter. This is only useful if you have select(), naturally.
3159 selecttype (selecttype.U):
3160 This variable holds the type used for the 2nd, 3rd, and 4th
3161 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3162 is defined, and 'int *' otherwise. This is only useful if you
3163 have select(), naturally.
3166 This variable is defined but not used by Configure.
3167 The value is a plain '' and is not useful.
3170 This variable contains the full pathname of the shell used
3171 on this system to execute Bourne shell scripts. Usually, this will be
3172 /bin/sh, though it's possible that some systems will have /bin/ksh,
3173 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3175 This unit comes before Options.U, so you can't set sh with a '-D'
3176 option, though you can override this (and startsh)
3177 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3180 This variable is defined but not used by Configure.
3181 The value is a plain '' and is not useful.
3183 sharpbang (spitshell.U):
3184 This variable contains the string #! if this system supports that
3187 shmattype (d_shmat.U):
3188 This symbol contains the type of pointer returned by shmat().
3189 It can be 'void *' or 'char *'.
3191 shortsize (intsize.U):
3192 This variable contains the value of the SHORTSIZE symbol which
3193 indicates to the C program how many bytes there are in a short.
3195 shrpenv (libperl.U):
3196 If the user builds a shared libperl.so, then we need to tell the
3197 'perl' executable where it will be able to find the installed libperl.so.
3198 One way to do this on some systems is to set the environment variable
3199 LD_RUN_PATH to the directory that will be the final location of the
3200 shared libperl.so. The makefile can use this with something like
3201 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3203 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3206 See the main perl Makefile.SH for actual working usage.
3207 Alternatively, we might be able to use a command line option such
3208 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3209 $archlibexp/CORE (Linux).
3211 shsharp (spitshell.U):
3212 This variable tells further Configure units whether your sh can
3215 sig_count (sig_name.U):
3216 This variable holds a number larger than the largest valid
3217 signal number. This is usually the same as the NSIG macro.
3219 sig_name (sig_name.U):
3220 This variable holds the signal names, space separated. The leading
3221 SIG in signal name is removed. A ZERO is prepended to the
3222 list. This is currently not used.
3224 sig_name_init (sig_name.U):
3225 This variable holds the signal names, enclosed in double quotes and
3226 separated by commas, suitable for use in the SIG_NAME definition
3227 below. A "ZERO" is prepended to the list, and the list is
3228 terminated with a plain 0. The leading SIG in signal names
3229 is removed. See sig_num.
3231 sig_num (sig_name.U):
3232 This variable holds the signal numbers, space separated. A ZERO is
3233 prepended to the list (corresponding to the fake SIGZERO), and
3234 the list is terminated with a 0. Those numbers correspond to
3235 the value of the signal listed in the same place within the
3238 sig_num_init (sig_name.U):
3239 This variable holds the signal numbers, enclosed in double quotes and
3240 separated by commas, suitable for use in the SIG_NUM definition
3241 below. A "ZERO" is prepended to the list, and the list is
3242 terminated with a plain 0.
3244 sig_size (sig_name.U):
3245 This variable contains the number of elements of the sig_name
3246 and sig_num arrays, excluding the final NULL entry.
3248 signal_t (d_voidsig.U):
3249 This variable holds the type of the signal handler (void or int).
3251 sitearch (sitearch.U):
3252 This variable contains the eventual value of the SITEARCH symbol,
3253 which is the name of the private library for this package. It may
3254 have a ~ on the front. It is up to the makefile to eventually create
3255 this directory while performing installation (with ~ substitution).
3256 The standard distribution will put nothing in this directory.
3257 After perl has been installed, users may install their own local
3258 architecture-dependent modules in this directory with
3259 MakeMaker Makefile.PL
3260 or equivalent. See INSTALL for details.
3262 sitearchexp (sitearch.U):
3263 This variable is the ~name expanded version of sitearch, so that you
3264 may use it directly in Makefiles or shell scripts.
3266 sitebin (sitebin.U):
3267 This variable holds the name of the directory in which the user wants
3268 to put add-on publicly executable files for the package in question. It
3269 is most often a local directory such as /usr/local/bin. Programs using
3270 this variable must be prepared to deal with ~name substitution.
3271 The standard distribution will put nothing in this directory.
3272 After perl has been installed, users may install their own local
3273 executables in this directory with
3274 MakeMaker Makefile.PL
3275 or equivalent. See INSTALL for details.
3277 sitebinexp (sitebin.U):
3278 This is the same as the sitebin variable, but is filename expanded at
3279 configuration time, for use in your makefiles.
3281 sitelib (sitelib.U):
3282 This variable contains the eventual value of the SITELIB symbol,
3283 which is the name of the private library for this package. It may
3284 have a ~ on the front. It is up to the makefile to eventually create
3285 this directory while performing installation (with ~ substitution).
3286 The standard distribution will put nothing in this directory.
3287 After perl has been installed, users may install their own local
3288 architecture-independent modules in this directory with
3289 MakeMaker Makefile.PL
3290 or equivalent. See INSTALL for details.
3292 sitelib_stem (sitelib.U):
3293 This variable is $sitelibexp with any trailing version-specific component
3294 removed. The elements in inc_version_list (inc_version_list.U) can
3295 be tacked onto this variable to generate a list of directories to search.
3297 sitelibexp (sitelib.U):
3298 This variable is the ~name expanded version of sitelib, so that you
3299 may use it directly in Makefiles or shell scripts.
3301 siteprefix (siteprefix.U):
3302 This variable holds the full absolute path of the directory below
3303 which the user will install add-on packages.
3304 See INSTALL for usage and examples.
3306 siteprefixexp (siteprefix.U):
3307 This variable holds the full absolute path of the directory below
3308 which the user will install add-on packages. Derived from siteprefix.
3310 sizesize (sizesize.U):
3311 This variable contains the size of a sizetype in bytes.
3313 sizetype (sizetype.U):
3314 This variable defines sizetype to be something like size_t,
3315 unsigned long, or whatever type is used to declare length
3316 parameters for string functions.
3319 This variable is defined but not used by Configure.
3320 The value is a plain '' and is not useful.
3323 This variable is defined but not used by Configure.
3324 The value is a plain '' and is not useful.
3327 This variable holds the extension used to identify shared libraries
3328 (also known as shared objects) on the system. Usually set to 'so'.
3330 sockethdr (d_socket.U):
3331 This variable has any cpp '-I' flags needed for socket support.
3333 socketlib (d_socket.U):
3334 This variable has the names of any libraries needed for socket support.
3336 socksizetype (socksizetype.U):
3337 This variable holds the type used for the size argument
3338 for various socket calls like accept. Usual values include
3339 socklen_t, size_t, and int.
3342 This variable is used internally by Configure to determine the
3343 full pathname (if any) of the sort program. After Configure runs,
3344 the value is reset to a plain "sort" and is not useful.
3346 spackage (package.U):
3347 This variable contains the name of the package being constructed,
3348 with the first letter uppercased, i.e. suitable for starting
3351 spitshell (spitshell.U):
3352 This variable contains the command necessary to spit out a runnable
3353 shell on this system. It is either cat or a grep '-v' for # comments.
3355 sPRId64 (quadfio.U):
3356 This variable, if defined, contains the string used by stdio to
3357 format 64-bit decimal numbers (format 'd') for output.
3359 sPRIeldbl (longdblfio.U):
3360 This variable, if defined, contains the string used by stdio to
3361 format long doubles (format 'e') for output.
3363 sPRIEUldbl (longdblfio.U):
3364 This variable, if defined, contains the string used by stdio to
3365 format long doubles (format 'E') for output.
3366 The 'U' in the name is to separate this from sPRIeldbl so that even
3367 case-blind systems can see the difference.
3369 sPRIfldbl (longdblfio.U):
3370 This variable, if defined, contains the string used by stdio to
3371 format long doubles (format 'f') for output.
3373 sPRIFUldbl (longdblfio.U):
3374 This variable, if defined, contains the string used by stdio to
3375 format long doubles (format 'F') for output.
3376 The 'U' in the name is to separate this from sPRIfldbl so that even
3377 case-blind systems can see the difference.
3379 sPRIgldbl (longdblfio.U):
3380 This variable, if defined, contains the string used by stdio to
3381 format long doubles (format 'g') for output.
3383 sPRIGUldbl (longdblfio.U):
3384 This variable, if defined, contains the string used by stdio to
3385 format long doubles (format 'G') for output.
3386 The 'U' in the name is to separate this from sPRIgldbl so that even
3387 case-blind systems can see the difference.
3389 sPRIi64 (quadfio.U):
3390 This variable, if defined, contains the string used by stdio to
3391 format 64-bit decimal numbers (format 'i') for output.
3393 sPRIo64 (quadfio.U):
3394 This variable, if defined, contains the string used by stdio to
3395 format 64-bit octal numbers (format 'o') for output.
3397 sPRIu64 (quadfio.U):
3398 This variable, if defined, contains the string used by stdio to
3399 format 64-bit unsigned decimal numbers (format 'u') for output.
3401 sPRIx64 (quadfio.U):
3402 This variable, if defined, contains the string used by stdio to
3403 format 64-bit hexadecimal numbers (format 'x') for output.
3405 sPRIXU64 (quadfio.U):
3406 This variable, if defined, contains the string used by stdio to
3407 format 64-bit hExADECimAl numbers (format 'X') for output.
3408 The 'U' in the name is to separate this from sPRIx64 so that even
3409 case-blind systems can see the difference.
3412 This variable holds the path to the package source. It is up to
3413 the Makefile to use this variable and set VPATH accordingly to
3414 find the sources remotely.
3416 sSCNfldbl (longdblfio.U):
3417 This variable, if defined, contains the string used by stdio to
3418 format long doubles (format 'f') for input.
3420 ssizetype (ssizetype.U):
3421 This variable defines ssizetype to be something like ssize_t,
3422 long or int. It is used by functions that return a count
3423 of bytes or an error condition. It must be a signed type.
3424 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3426 startperl (startperl.U):
3427 This variable contains the string to put on the front of a perl
3428 script to make sure (hopefully) that it runs with perl and not some
3429 shell. Of course, that leading line must be followed by the classical
3431 eval 'exec perl -S $0 ${1+"$@"}'
3432 if $running_under_some_shell;
3433 to guarantee perl startup should the shell execute the script. Note
3434 that this magic incatation is not understood by csh.
3436 startsh (startsh.U):
3437 This variable contains the string to put on the front of a shell
3438 script to make sure (hopefully) that it runs with sh and not some
3441 static_ext (Extensions.U):
3442 This variable holds a list of XS extension files we want to
3443 link statically into the package. It is used by Makefile.
3445 stdchar (stdchar.U):
3446 This variable conditionally defines STDCHAR to be the type of char
3447 used in stdio.h. It has the values "unsigned char" or "char".
3449 stdio_base (d_stdstdio.U):
3450 This variable defines how, given a FILE pointer, fp, to access the
3451 _base field (or equivalent) of stdio.h's FILE structure. This will
3452 be used to define the macro FILE_base(fp).
3454 stdio_bufsiz (d_stdstdio.U):
3455 This variable defines how, given a FILE pointer, fp, to determine
3456 the number of bytes store in the I/O buffer pointer to by the
3457 _base field (or equivalent) of stdio.h's FILE structure. This will
3458 be used to define the macro FILE_bufsiz(fp).
3460 stdio_cnt (d_stdstdio.U):
3461 This variable defines how, given a FILE pointer, fp, to access the
3462 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3463 be used to define the macro FILE_cnt(fp).
3465 stdio_filbuf (d_stdstdio.U):
3466 This variable defines how, given a FILE pointer, fp, to tell
3467 stdio to refill it's internal buffers (?). This will
3468 be used to define the macro FILE_filbuf(fp).
3470 stdio_ptr (d_stdstdio.U):
3471 This variable defines how, given a FILE pointer, fp, to access the
3472 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3473 be used to define the macro FILE_ptr(fp).
3475 stdio_stream_array (stdio_streams.U):
3476 This variable tells the name of the array holding the stdio streams.
3477 Usual values include _iob, __iob, and __sF.
3479 strings (i_string.U):
3480 This variable holds the full path of the string header that will be
3481 used. Typically /usr/include/string.h or /usr/include/strings.h.
3484 This variable is defined but not used by Configure.
3485 The value is a plain '' and is not useful.
3487 subversion (patchlevel.U):
3488 The subversion level of this package.
3489 The value of subversion comes from the patchlevel.h file.
3490 In a version number such as 5.6.1, this is the "1".
3491 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3492 This is unique to perl.
3495 This variable holds the place where the manual is located on this
3496 system. It is not the place where the user wants to put his manual
3497 pages. Rather it is the place where Configure may look to find manual
3498 for unix commands (section 1 of the manual usually). See mansrc.
3501 This variable is defined but not used by Configure.
3502 The value is a plain '' and is not useful.
3505 This variable is defined but not used by Configure.
3506 The value is a plain '' and is not useful.
3509 This variable is defined but not used by Configure.
3510 The value is a plain '' and is not useful.
3513 This variable is defined but not used by Configure.
3514 The value is a plain '' and is not useful.
3517 This variable is used internally by Configure to determine the
3518 full pathname (if any) of the test program. After Configure runs,
3519 the value is reset to a plain "test" and is not useful.
3521 timeincl (i_time.U):
3522 This variable holds the full path of the included time header(s).
3524 timetype (d_time.U):
3525 This variable holds the type returned by time(). It can be long,
3526 or time_t on BSD sites (in which case <sys/types.h> should be
3527 included). Anyway, the type Time_t should be used.
3530 This variable is used internally by Configure to determine the
3531 full pathname (if any) of the touch program. After Configure runs,
3532 the value is reset to a plain "touch" and is not useful.
3535 This variable is used internally by Configure to determine the
3536 full pathname (if any) of the tr program. After Configure runs,
3537 the value is reset to a plain "tr" and is not useful.
3540 This variable contains the value to be passed to the tr(1)
3541 command to transliterate a newline. Typical values are
3542 '\012' and '\n'. This is needed for EBCDIC systems where
3543 newline is not necessarily '\012'.
3546 This variable is defined but not used by Configure.
3547 The value is a plain '' and is not useful.
3550 This variable is the size of an U16 in bytes.
3553 This variable contains the C type used for Perl's U16.
3556 This variable is the size of an U32 in bytes.
3559 This variable contains the C type used for Perl's U32.
3562 This variable is the size of an U64 in bytes.
3565 This variable contains the C type used for Perl's U64.
3568 This variable is the size of an U8 in bytes.
3571 This variable contains the C type used for Perl's U8.
3574 This variable contains the format string used for printing a Uid_t.
3576 uidsign (uidsign.U):
3577 This variable contains the signedness of a uidtype.
3578 1 for unsigned, -1 for signed.
3580 uidsize (uidsize.U):
3581 This variable contains the size of a uidtype in bytes.
3583 uidtype (uidtype.U):
3584 This variable defines Uid_t to be something like uid_t, int,
3585 ushort, or whatever type is used to declare user ids in the kernel.
3588 This variable is used internally by Configure to determine the
3589 full pathname (if any) of the uname program. After Configure runs,
3590 the value is reset to a plain "uname" and is not useful.
3593 This variable is used internally by Configure to determine the
3594 full pathname (if any) of the uniq program. After Configure runs,
3595 the value is reset to a plain "uniq" and is not useful.
3597 uquadtype (quadtype.U):
3598 This variable defines Uquad_t to be something like unsigned long,
3599 unsigned int, unsigned long long, uint64_t, or whatever type is
3600 used for 64-bit integers.
3602 use5005threads (usethreads.U):
3603 This variable conditionally defines the USE_5005THREADS symbol,
3604 and indicates that Perl should be built to use the 5.005-based
3605 threading implementation.
3607 use64bitall (use64bits.U):
3608 This variable conditionally defines the USE_64_BIT_ALL symbol,
3609 and indicates that 64-bit integer types should be used
3610 when available. The maximal possible
3611 64-bitness is employed: LP64 or ILP64, meaning that you will
3612 be able to use more than 2 gigabytes of memory. This mode is
3613 even more binary incompatible than USE_64_BIT_INT. You may not
3614 be able to run the resulting executable in a 32-bit CPU at all or
3615 you may need at least to reboot your OS to 64-bit mode.
3617 use64bitint (use64bits.U):
3618 This variable conditionally defines the USE_64_BIT_INT symbol,
3619 and indicates that 64-bit integer types should be used
3620 when available. The minimal possible 64-bitness
3621 is employed, just enough to get 64-bit integers into Perl.
3622 This may mean using for example "long longs", while your memory
3623 may still be limited to 2 gigabytes.
3626 This variable indicates if the system supports dynamic
3627 loading of some sort. See also dlsrc and dlobj.
3629 useithreads (usethreads.U):
3630 This variable conditionally defines the USE_ITHREADS symbol,
3631 and indicates that Perl should be built to use the interpreter-based
3632 threading implementation.
3634 uselargefiles (uselfs.U):
3635 This variable conditionally defines the USE_LARGE_FILES symbol,
3636 and indicates that large file interfaces should be used when
3639 uselongdouble (uselongdbl.U):
3640 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3641 and indicates that long doubles should be used when available.
3643 usemorebits (usemorebits.U):
3644 This variable conditionally defines the USE_MORE_BITS symbol,
3645 and indicates that explicit 64-bit interfaces and long doubles
3646 should be used when available.
3648 usemultiplicity (usemultiplicity.U):
3649 This variable conditionally defines the MULTIPLICITY symbol,
3650 and indicates that Perl should be built to use multiplicity.
3652 usemymalloc (mallocsrc.U):
3653 This variable contains y if the malloc that comes with this package
3654 is desired over the system's version of malloc. People often include
3655 special versions of malloc for effiency, but such versions are often
3656 less portable. See also mallocsrc and mallocobj.
3657 If this is 'y', then -lmalloc is removed from $libs.
3660 This variable contains 'true' or 'false' depending whether the
3661 nm extraction is wanted or not.
3663 useopcode (Extensions.U):
3664 This variable holds either 'true' or 'false' to indicate
3665 whether the Opcode extension should be used. The sole
3666 use for this currently is to allow an easy mechanism
3667 for users to skip the Opcode extension from the Configure
3670 useperlio (useperlio.U):
3671 This variable conditionally defines the USE_PERLIO symbol,
3672 and indicates that the PerlIO abstraction should be
3675 useposix (Extensions.U):
3676 This variable holds either 'true' or 'false' to indicate
3677 whether the POSIX extension should be used. The sole
3678 use for this currently is to allow an easy mechanism
3679 for hints files to indicate that POSIX will not compile
3680 on a particular system.
3683 This variable is set to true when the user agrees to use sfio.
3684 It is set to false when sfio is not available or when the user
3685 explicitely requests not to use sfio. It is here primarily so
3686 that command-line settings can override the auto-detection of
3687 d_sfio without running into a "WHOA THERE".
3689 useshrplib (libperl.U):
3690 This variable is set to 'yes' if the user wishes
3691 to build a shared libperl, and 'no' otherwise.
3693 usesocks (usesocks.U):
3694 This variable conditionally defines the USE_SOCKS symbol,
3695 and indicates that Perl should be built to use SOCKS.
3697 usethreads (usethreads.U):
3698 This variable conditionally defines the USE_THREADS symbol,
3699 and indicates that Perl should be built to use threads.
3701 usevendorprefix (vendorprefix.U):
3702 This variable tells whether the vendorprefix
3703 and consequently other vendor* paths are in use.
3705 usevfork (d_vfork.U):
3706 This variable is set to true when the user accepts to use vfork.
3707 It is set to false when no vfork is available or when the user
3708 explicitely requests not to use vfork.
3711 This variable holds the path of the include files, which is
3712 usually /usr/include. It is mainly used by other Configure units.
3715 This variable is defined but not used by Configure.
3716 The value is a plain '' and is not useful.
3718 uvoformat (perlxvf.U):
3719 This variable contains the format string used for printing
3720 a Perl UV as an unsigned octal integer.
3723 This variable is the size of a UV in bytes.
3726 This variable contains the C type used for Perl's UV.
3728 uvuformat (perlxvf.U):
3729 This variable contains the format string used for printing
3730 a Perl UV as an unsigned decimal integer.
3732 uvxformat (perlxvf.U):
3733 This variable contains the format string used for printing
3734 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3736 uvXUformat (perlxvf.U):
3737 This variable contains the format string used for printing
3738 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3740 vendorarch (vendorarch.U):
3741 This variable contains the value of the PERL_VENDORARCH symbol.
3742 It may have a ~ on the front.
3743 The standard distribution will put nothing in this directory.
3744 Vendors who distribute perl may wish to place their own
3745 architecture-dependent modules and extensions in this directory with
3746 MakeMaker Makefile.PL INSTALLDIRS=vendor
3747 or equivalent. See INSTALL for details.
3749 vendorarchexp (vendorarch.U):
3750 This variable is the ~name expanded version of vendorarch, so that you
3751 may use it directly in Makefiles or shell scripts.
3753 vendorbin (vendorbin.U):
3754 This variable contains the eventual value of the VENDORBIN symbol.
3755 It may have a ~ on the front.
3756 The standard distribution will put nothing in this directory.
3757 Vendors who distribute perl may wish to place additional
3758 binaries in this directory with
3759 MakeMaker Makefile.PL INSTALLDIRS=vendor
3760 or equivalent. See INSTALL for details.
3762 vendorbinexp (vendorbin.U):
3763 This variable is the ~name expanded version of vendorbin, so that you
3764 may use it directly in Makefiles or shell scripts.
3766 vendorlib (vendorlib.U):
3767 This variable contains the eventual value of the VENDORLIB symbol,
3768 which is the name of the private library for this package.
3769 The standard distribution will put nothing in this directory.
3770 Vendors who distribute perl may wish to place their own
3771 modules in this directory with
3772 MakeMaker Makefile.PL INSTALLDIRS=vendor
3773 or equivalent. See INSTALL for details.
3775 vendorlib_stem (vendorlib.U):
3776 This variable is $vendorlibexp with any trailing version-specific component
3777 removed. The elements in inc_version_list (inc_version_list.U) can
3778 be tacked onto this variable to generate a list of directories to search.
3780 vendorlibexp (vendorlib.U):
3781 This variable is the ~name expanded version of vendorlib, so that you
3782 may use it directly in Makefiles or shell scripts.
3784 vendorprefix (vendorprefix.U):
3785 This variable holds the full absolute path of the directory below
3786 which the vendor will install add-on packages.
3787 See INSTALL for usage and examples.
3789 vendorprefixexp (vendorprefix.U):
3790 This variable holds the full absolute path of the directory below
3791 which the vendor will install add-on packages. Derived from vendorprefix.
3793 version (patchlevel.U):
3794 The full version number of this package, such as 5.6.1 (or 5_6_1).
3795 This combines revision, patchlevel, and subversion to get the
3796 full version number, including any possible subversions.
3797 This is suitable for use as a directory name, and hence is
3798 filesystem dependent.
3800 versiononly (versiononly.U):
3801 If set, this symbol indicates that only the version-specific
3802 components of a perl installation should be installed.
3803 This may be useful for making a test installation of a new
3804 version without disturbing the existing installation.
3805 Setting versiononly is equivalent to setting installperl's -v option.
3806 In particular, the non-versioned scripts and programs such as
3807 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
3808 (see INSTALL for a more complete list). Nor are the man
3810 Usually, this is undef.
3813 This variable is defined but not used by Configure.
3814 The value is a plain '' and is not useful.
3816 voidflags (voidflags.U):
3817 This variable contains the eventual value of the VOIDFLAGS symbol,
3818 which indicates how much support of the void type is given by this
3819 compiler. See VOIDFLAGS for more info.
3822 This variable holds extra path (space-separated) used to find
3823 libraries on this platform, for example CPU-specific libraries
3824 (on multi-CPU platforms) may be listed here.
3826 xs_apiversion (xs_apiversion.U):
3827 This variable contains the version of the oldest perl binary
3828 compatible with the present perl. perl.c:incpush() and
3829 lib/lib.pm will automatically search in $sitearch for older
3830 directories across major versions back to xs_apiversion.
3831 This is only useful if you have a perl library directory tree
3832 structured like the default one.
3833 See INSTALL for how this works.
3834 The versioned site_perl directory was introduced in 5.005,
3835 so that is the lowest possible value.
3836 Since this can depend on compile time options (such as
3837 bincompat) it is set by Configure. Other non-default sources
3838 of potential incompatibility, such as multiplicity, threads,
3839 debugging, 64bits, sfio, etc., are not checked for currently,
3840 though in principle we could go snooping around in old
3844 This variable holds the name of the compiler compiler we
3845 want to use in the Makefile. It can be yacc, byacc, or bison -y.
3848 This variable contains any additional yacc flags desired by the
3849 user. It is up to the Makefile to use this.
3852 This variable is defined but not used by Configure.
3853 The value is a plain '' and is not useful.
3856 This variable is used internally by Configure to determine the
3857 full pathname (if any) of the zip program. After Configure runs,
3858 the value is reset to a plain "zip" and is not useful.