1 This file contains a description of all the shell variables whose value is
2 determined by the Configure script. Variables intended for use in C
3 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
4 generates pod documentation for Config.pm from this file--please try to keep
5 the formatting regular.]
8 This variable defines the extension used for ordinary libraries.
9 For unix, it is '.a'. The '.' is included. Other possible
10 values include '.lib'.
13 This variable defines the extension used for executable files.
14 For unix it is empty. Other possible values include '.exe'.
17 This variable defines the extension used for object files.
18 For unix, it is '.o'. The '.' is included. Other possible
19 values include '.obj'.
22 This variable is set to 'true' if AFS (Andrew File System) is used
23 on the system, 'false' otherwise. It is possible to override this
24 with a hint value or command line option, but you'd better know
27 alignbytes (alignbytes.U):
28 This variable holds the number of bytes required to align a
29 double-- or a long double when applicable. Usual values are
30 2, 4 and 8. The default is eight, for safety.
32 ansi2knr (ansi2knr.U):
33 This variable is set if the user needs to run ansi2knr.
34 Currently, this is not supported, so we just abort.
36 aphostname (d_gethname.U):
37 This variable contains the command which can be used to compute the
38 host name. The command is fully qualified by its absolute path, to make
39 it safe when used by a process with super-user privileges.
41 api_revision (patchlevel.U):
42 The three variables, api_revision, api_version, and
43 api_subversion, specify the version of the oldest perl binary
44 compatible with the present perl. In a full version string
45 such as '5.6.1', api_revision is the '5'.
46 Prior to 5.5.640, the format was a floating point number,
48 perl.c:incpush() and lib/lib.pm will automatically search in
49 $sitelib/.. for older directories back to the limit specified
50 by these api_ variables. This is only useful if you have a
51 perl library directory tree structured like the default one.
52 See INSTALL for how this works. The versioned site_perl
53 directory was introduced in 5.005, so that is the lowest
54 possible value. The version list appropriate for the current
55 system is determined in inc_version_list.U.
56 XXX To do: Since compatibility can depend on compile time
57 options (such as bincompat, longlong, etc.) it should
58 (perhaps) be set by Configure, but currently it isn't.
59 Currently, we read a hard-wired value from patchlevel.h.
60 Perhaps what we ought to do is take the hard-wired value from
61 patchlevel.h but then modify it if the current Configure
62 options warrant. patchlevel.h then would use an #ifdef guard.
64 api_subversion (patchlevel.U):
65 The three variables, api_revision, api_version, and
66 api_subversion, specify the version of the oldest perl binary
67 compatible with the present perl. In a full version string
68 such as '5.6.1', api_subversion is the '1'. See api_revision for
71 api_version (patchlevel.U):
72 The three variables, api_revision, api_version, and
73 api_subversion, specify the version of the oldest perl binary
74 compatible with the present perl. In a full version string
75 such as '5.6.1', api_version is the '6'. See api_revision for
76 full details. As a special case, 5.5.0 is rendered in the
77 old-style as 5.005. (In the 5.005_0x maintenance series,
78 this was the only versioned directory in $sitelib.)
80 api_versionstring (patchlevel.U):
81 This variable combines api_revision, api_version, and
82 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
83 for use as a directory name. This is filesystem dependent.
86 This variable is used internally by Configure to determine the
87 full pathname (if any) of the ar program. After Configure runs,
88 the value is reset to a plain "ar" and is not useful.
91 This variable holds the name of the directory in which the user wants
92 to put architecture-dependent public library files for $package.
93 It is most often a local directory such as /usr/local/lib.
94 Programs using this variable must be prepared to deal
95 with filename expansion.
97 archlibexp (archlib.U):
98 This variable is the same as the archlib variable, but is
99 filename expanded at configuration time, for convenient use.
101 archname64 (use64bits.U):
102 This variable is used for the 64-bitness part of $archname.
104 archname (archname.U):
105 This variable is a short name to characterize the current
106 architecture. It is used mainly to construct the default archlib.
109 This variable defines any additional objects that must be linked
110 in with the program on this architecture. On unix, it is usually
111 empty. It is typically used to include emulations of unix calls
112 or other facilities. For perl on OS/2, for example, this would
116 This variable is used internally by Configure to determine the
117 full pathname (if any) of the awk program. After Configure runs,
118 the value is reset to a plain "awk" and is not useful.
121 The base revision level of this package, from the .package file.
124 This variable is defined but not used by Configure.
125 The value is a plain '' and is not useful.
128 This variable holds the name of the directory in which the user wants
129 to put publicly executable images for the package in question. It
130 is most often a local directory such as /usr/local/bin. Programs using
131 this variable must be prepared to deal with ~name substitution.
133 bincompat5005 (bincompat5005.U):
134 This variable contains y if this version of Perl should be
135 binary-compatible with Perl 5.005.
138 This is the same as the bin variable, but is filename expanded at
139 configuration time, for use in your makefiles.
142 This variable is defined but not used by Configure.
143 The value is a plain '' and is not useful.
146 This variable is used internally by Configure to determine the
147 full pathname (if any) of the byacc program. After Configure runs,
148 the value is reset to a plain "byacc" and is not useful.
150 byteorder (byteorder.U):
151 This variable holds the byte order. In the following, larger digits
152 indicate more significance. The variable byteorder is either 4321
153 on a big-endian machine, or 1234 on a little-endian, or 87654321
154 on a Cray ... or 3412 with weird order !
157 This variable contains the \c string if that is what causes the echo
158 command to suppress newline. Otherwise it is null. Correct usage is
159 $echo $n "prompt for a question: $c".
161 castflags (d_castneg.U):
162 This variable contains a flag that precise difficulties the
163 compiler has casting odd floating values to unsigned long:
165 1 = couldn't cast < 0
166 2 = couldn't cast >= 0x80000000
167 4 = couldn't cast in argument expression list
170 This variable is used internally by Configure to determine the
171 full pathname (if any) of the cat program. After Configure runs,
172 the value is reset to a plain "cat" and is not useful.
175 This variable holds the name of a command to execute a C compiler which
176 can resolve multiple global references that happen to have the same
177 name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'.
179 cccdlflags (dlsrc.U):
180 This variable contains any special flags that might need to be
181 passed with 'cc -c' to compile modules to be used to create a shared
182 library that will be used for dynamic loading. For hpux, this
183 should be +z. It is up to the makefile to use it.
186 This variable contains any special flags that might need to be
187 passed to cc to link with a shared library for dynamic loading.
188 It is up to the makefile to use it. For sunos 4.1, it should
192 This variable contains any additional C compiler flags desired by
193 the user. It is up to the Makefile to use this.
195 ccsymbols (Cppsym.U):
196 The variable contains the symbols defined by the C compiler alone.
197 The symbols defined by cpp or by cc when it calls cpp are not in
198 this list, see cppsymbols and cppccsymbols.
199 The list is a space-separated list of symbol=value tokens.
202 Login name of the person who ran the Configure script and answered the
203 questions. This is used to tag both config.sh and config_h.SH.
205 cf_email (cf_email.U):
206 Electronic mail address of the person who ran Configure. This can be
207 used by units that require the user's e-mail, like MailList.U.
210 Holds the output of the "date" command when the configuration file was
211 produced. This is used to tag both config.sh and config_h.SH.
213 charsize (charsize.U):
214 This variable contains the value of the CHARSIZE symbol, which
215 indicates to the C program how many bytes there are in a character.
218 This variable is defined but not used by Configure.
219 The value is a plain '' and is not useful.
222 This variable is defined but not used by Configure.
223 The value is a plain '' and is not useful.
226 This variable is defined but not used by Configure.
227 The value is a plain '' and is not useful.
229 clocktype (d_times.U):
230 This variable holds the type returned by times(). It can be long,
231 or clock_t on BSD sites (in which case <sys/types.h> should be
235 This variable is used internally by Configure to determine the
236 full pathname (if any) of the comm program. After Configure runs,
237 the value is reset to a plain "comm" and is not useful.
240 This variable is defined but not used by Configure.
241 The value is a plain '' and is not useful.
243 CONFIGDOTSH (Oldsyms.U):
244 This is set to 'true' in config.sh so that a shell script
245 sourcing config.sh can tell if it has been sourced already.
247 contains (contains.U):
248 This variable holds the command to do a grep with a proper return
249 status. On most sane systems it is simply "grep". On insane systems
250 it is a grep followed by a cat followed by a test. This variable
251 is primarily for the use of other Configure units.
254 This variable is used internally by Configure to determine the
255 full pathname (if any) of the cp program. After Configure runs,
256 the value is reset to a plain "cp" and is not useful.
259 This variable is defined but not used by Configure.
260 The value is a plain '' and is not useful.
263 This variable is used internally by Configure to determine the
264 full pathname (if any) of the cpp program. After Configure runs,
265 the value is reset to a plain "cpp" and is not useful.
267 cpp_stuff (cpp_stuff.U):
268 This variable contains an identification of the catenation mechanism
269 used by the C preprocessor.
271 cppccsymbols (Cppsym.U):
272 The variable contains the symbols defined by the C compiler
273 when it calls cpp. The symbols defined by the cc alone or cpp
274 alone are not in this list, see ccsymbols and cppsymbols.
275 The list is a space-separated list of symbol=value tokens.
277 cppflags (ccflags.U):
278 This variable holds the flags that will be passed to the C pre-
279 processor. It is up to the Makefile to use it.
281 cpplast (cppstdin.U):
282 This variable has the same functionality as cppminus, only it applies
283 to cpprun and not cppstdin.
285 cppminus (cppstdin.U):
286 This variable contains the second part of the string which will invoke
287 the C preprocessor on the standard input and produce to standard
288 output. This variable will have the value "-" if cppstdin needs
289 a minus to specify standard input, otherwise the value is "".
292 This variable contains the command which will invoke a C preprocessor
293 on standard input and put the output to stdout. It is guaranteed not
294 to be a wrapper and may be a null string if no preprocessor can be
295 made directly available. This preprocessor might be different from the
296 one used by the C compiler. Don't forget to append cpplast after the
297 preprocessor options.
299 cppstdin (cppstdin.U):
300 This variable contains the command which will invoke the C
301 preprocessor on standard input and put the output to stdout.
302 It is primarily used by other Configure units that ask about
303 preprocessor symbols.
305 cppsymbols (Cppsym.U):
306 The variable contains the symbols defined by the C preprocessor
307 alone. The symbols defined by cc or by cc when it calls cpp are
308 not in this list, see ccsymbols and cppccsymbols.
309 The list is a space-separated list of symbol=value tokens.
311 crosscompile (crosscompile.U):
312 This variable conditionally defines the CROSSCOMPILE symbol
313 which signifies that the build process is be a cross-compilation.
314 This is normally set by hints files or from Configure command line.
316 cryptlib (d_crypt.U):
317 This variable holds -lcrypt or the path to a libcrypt.a archive if
318 the crypt() function is not defined in the standard C library. It is
319 up to the Makefile to use this.
322 This variable is used internally by Configure to determine the
323 full pathname (if any) of the csh program. After Configure runs,
324 the value is reset to a plain "csh" and is not useful.
326 d_access (d_access.U):
327 This variable conditionally defines HAS_ACCESS if the access() system
328 call is available to check for access permissions using real IDs.
330 d_accessx (d_accessx.U):
331 This variable conditionally defines the HAS_ACCESSX symbol, which
332 indicates to the C program that the accessx() routine is available.
335 This variable conditionally defines the HAS_ALARM symbol, which
336 indicates to the C program that the alarm() routine is available.
338 d_archlib (archlib.U):
339 This variable conditionally defines ARCHLIB to hold the pathname
340 of architecture-dependent library files for $package. If
341 $archlib is the same as $privlib, then this is set to undef.
344 This variable conditionally defines the HAS_ATOLF symbol, which
345 indicates to the C program that the atolf() routine is available.
348 This variable conditionally defines the HAS_ATOLL symbol, which
349 indicates to the C program that the atoll() routine is available.
351 d_attribut (d_attribut.U):
352 This variable conditionally defines HASATTRIBUTE, which
353 indicates the C compiler can check for function attributes,
354 such as printf formats.
357 This variable conditionally defines the HAS_BCMP symbol if
358 the bcmp() routine is available to compare strings.
361 This variable conditionally defines the HAS_BCOPY symbol if
362 the bcopy() routine is available to copy strings.
364 d_bincompat5005 (bincompat5005.U):
365 This variable conditionally defines BINCOMPAT5005 so that embed.h
366 can take special action if this version of Perl should be
367 binary-compatible with Perl 5.005. This is impossible for builds
368 that use features like threads and multiplicity it is always $undef
372 This symbol conditionally defines the symbol BSD when running on a
375 d_bsdgetpgrp (d_getpgrp.U):
376 This variable conditionally defines USE_BSD_GETPGRP if
377 getpgrp needs one arguments whereas USG one needs none.
379 d_bsdsetpgrp (d_setpgrp.U):
380 This variable conditionally defines USE_BSD_SETPGRP if
381 setpgrp needs two arguments whereas USG one needs none.
382 See also d_setpgid for a POSIX interface.
385 This variable conditionally defines the HAS_BZERO symbol if
386 the bzero() routine is available to set memory to 0.
388 d_casti32 (d_casti32.U):
389 This variable conditionally defines CASTI32, which indicates
390 whether the C compiler can cast large floats to 32-bit ints.
392 d_castneg (d_castneg.U):
393 This variable conditionally defines CASTNEG, which indicates
394 wether the C compiler can cast negative float to unsigned.
396 d_charvspr (d_vprintf.U):
397 This variable conditionally defines CHARVSPRINTF if this system
398 has vsprintf returning type (char*). The trend seems to be to
399 declare it as "int vsprintf()".
402 This variable conditionally defines the HAS_CHOWN symbol, which
403 indicates to the C program that the chown() routine is available.
405 d_chroot (d_chroot.U):
406 This variable conditionally defines the HAS_CHROOT symbol, which
407 indicates to the C program that the chroot() routine is available.
409 d_chsize (d_chsize.U):
410 This variable conditionally defines the CHSIZE symbol, which
411 indicates to the C program that the chsize() routine is available
412 to truncate files. You might need a -lx to get this routine.
414 d_closedir (d_closedir.U):
415 This variable conditionally defines HAS_CLOSEDIR if closedir() is
419 This variable conditionally defines the HASCONST symbol, which
420 indicates to the C program that this C compiler knows about the
424 This variable conditionally defines the CRYPT symbol, which
425 indicates to the C program that the crypt() routine is available
426 to encrypt passwords and the like.
429 This variable conditionally defines the CSH symbol, which
430 indicates to the C program that the C-shell exists.
432 d_cuserid (d_cuserid.U):
433 This variable conditionally defines the HAS_CUSERID symbol, which
434 indicates to the C program that the cuserid() routine is available
435 to get character login names.
437 d_dbl_dig (d_dbl_dig.U):
438 This variable conditionally defines d_dbl_dig if this system's
439 header files provide DBL_DIG, which is the number of significant
440 digits in a double precision number.
442 d_difftime (d_difftime.U):
443 This variable conditionally defines the HAS_DIFFTIME symbol, which
444 indicates to the C program that the difftime() routine is available.
446 d_dirnamlen (i_dirent.U):
447 This variable conditionally defines DIRNAMLEN, which indicates
448 to the C program that the length of directory entry names is
449 provided by a d_namelen field.
451 d_dlerror (d_dlerror.U):
452 This variable conditionally defines the HAS_DLERROR symbol, which
453 indicates to the C program that the dlerror() routine is available.
455 d_dlopen (d_dlopen.U):
456 This variable conditionally defines the HAS_DLOPEN symbol, which
457 indicates to the C program that the dlopen() routine is available.
459 d_dlsymun (d_dlsymun.U):
460 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
461 indicates that we need to prepend an underscore to the symbol
462 name before calling dlsym().
464 d_dosuid (d_dosuid.U):
465 This variable conditionally defines the symbol DOSUID, which
466 tells the C program that it should insert setuid emulation code
467 on hosts which have setuid #! scripts disabled.
469 d_drand48proto (d_drand48proto.U):
470 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
471 which indicates to the C program that the system provides
472 a prototype for the drand48() function. Otherwise, it is
473 up to the program to supply one.
476 This variable conditionally defines HAS_DUP2 if dup2() is
477 available to duplicate file descriptors.
479 d_eaccess (d_eaccess.U):
480 This variable conditionally defines the HAS_EACCESS symbol, which
481 indicates to the C program that the eaccess() routine is available.
483 d_endgrent (d_endgrent.U):
484 This variable conditionally defines the HAS_ENDGRENT symbol, which
485 indicates to the C program that the endgrent() routine is available
486 for sequential access of the group database.
488 d_endhent (d_endhent.U):
489 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
490 available to close whatever was being used for host queries.
492 d_endnent (d_endnent.U):
493 This variable conditionally defines HAS_ENDNETENT if endnetent() is
494 available to close whatever was being used for network queries.
496 d_endpent (d_endpent.U):
497 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
498 available to close whatever was being used for protocol queries.
500 d_endpwent (d_endpwent.U):
501 This variable conditionally defines the HAS_ENDPWENT symbol, which
502 indicates to the C program that the endpwent() routine is available
503 for sequential access of the passwd database.
505 d_endsent (d_endsent.U):
506 This variable conditionally defines HAS_ENDSERVENT if endservent() is
507 available to close whatever was being used for service queries.
509 d_eofnblk (nblock_io.U):
510 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
511 when reading from a non-blocking I/O source.
514 This variable conditionally defines the symbols EUNICE and VAX, which
515 alerts the C program that it must deal with ideosyncracies of VMS.
517 d_fchmod (d_fchmod.U):
518 This variable conditionally defines the HAS_FCHMOD symbol, which
519 indicates to the C program that the fchmod() routine is available
520 to change mode of opened files.
522 d_fchown (d_fchown.U):
523 This variable conditionally defines the HAS_FCHOWN symbol, which
524 indicates to the C program that the fchown() routine is available
525 to change ownership of opened files.
528 This variable conditionally defines the HAS_FCNTL symbol, and indicates
529 whether the fcntl() function exists
531 d_fd_macros (d_fd_set.U):
532 This variable contains the eventual value of the HAS_FD_MACROS symbol,
533 which indicates if your C compiler knows about the macros which
534 manipulate an fd_set.
536 d_fd_set (d_fd_set.U):
537 This variable contains the eventual value of the HAS_FD_SET symbol,
538 which indicates if your C compiler knows about the fd_set typedef.
540 d_fds_bits (d_fd_set.U):
541 This variable contains the eventual value of the HAS_FDS_BITS symbol,
542 which indicates if your fd_set typedef contains the fds_bits member.
543 If you have an fd_set typedef, but the dweebs who installed it did
544 a half-fast job and neglected to provide the macros to manipulate
545 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
547 d_fgetpos (d_fgetpos.U):
548 This variable conditionally defines HAS_FGETPOS if fgetpos() is
549 available to get the file position indicator.
551 d_flexfnam (d_flexfnam.U):
552 This variable conditionally defines the FLEXFILENAMES symbol, which
553 indicates that the system supports filenames longer than 14 characters.
556 This variable conditionally defines HAS_FLOCK if flock() is
557 available to do file locking.
560 This variable conditionally defines the HAS_FORK symbol, which
561 indicates to the C program that the fork() routine is available.
563 d_fpathconf (d_pathconf.U):
564 This variable conditionally defines the HAS_FPATHCONF symbol, which
565 indicates to the C program that the pathconf() routine is available
566 to determine file-system related limits and options associated
567 with a given open file descriptor.
569 d_fpos64_t (d_fpos64_t.U):
570 This symbol will be defined if the C compiler supports fpos64_t.
572 d_frexpl (d_frexpl.U):
573 This variable conditionally defines the HAS_FREXPL symbol, which
574 indicates to the C program that the frexpl() routine is available.
576 d_fs_data_s (d_fs_data_s.U):
577 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
578 which indicates that the struct fs_data is supported.
580 d_fseeko (d_fseeko.U):
581 This variable conditionally defines the HAS_FSEEKO symbol, which
582 indicates to the C program that the fseeko() routine is available.
584 d_fsetpos (d_fsetpos.U):
585 This variable conditionally defines HAS_FSETPOS if fsetpos() is
586 available to set the file position indicator.
588 d_fstatfs (d_fstatfs.U):
589 This variable conditionally defines the HAS_FSTATFS symbol, which
590 indicates to the C program that the fstatfs() routine is available.
592 d_fstatvfs (d_statvfs.U):
593 This variable conditionally defines the HAS_FSTATVFS symbol, which
594 indicates to the C program that the fstatvfs() routine is available.
596 d_ftello (d_ftello.U):
597 This variable conditionally defines the HAS_FTELLO symbol, which
598 indicates to the C program that the ftello() routine is available.
601 This variable conditionally defines the HAS_FTIME symbol, which indicates
602 that the ftime() routine exists. The ftime() routine is basically
603 a sub-second accuracy clock.
605 d_Gconvert (d_gconvert.U):
606 This variable holds what Gconvert is defined as to convert
607 floating point numbers into strings. It could be 'gconvert'
608 or a more complex macro emulating gconvert with gcvt() or sprintf.
610 d_Gconvert='gconvert((x),(n),(t),(b))'
611 d_Gconvert='gcvt((x),(n),(b))'
612 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
614 d_getcwd (d_getcwd.U):
615 This variable conditionally defines the HAS_GETCWD symbol, which
616 indicates to the C program that the getcwd() routine is available
617 to get the current working directory.
619 d_getfsstat (d_getfsstat.U):
620 This variable conditionally defines the HAS_GETFSSTAT symbol, which
621 indicates to the C program that the getfsstat() routine is available.
623 d_getgrent (d_getgrent.U):
624 This variable conditionally defines the HAS_GETGRENT symbol, which
625 indicates to the C program that the getgrent() routine is available
626 for sequential access of the group database.
628 d_getgrps (d_getgrps.U):
629 This variable conditionally defines the HAS_GETGROUPS symbol, which
630 indicates to the C program that the getgroups() routine is available
631 to get the list of process groups.
633 d_gethbyaddr (d_gethbyad.U):
634 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
635 indicates to the C program that the gethostbyaddr() routine is available
636 to look up hosts by their IP addresses.
638 d_gethbyname (d_gethbynm.U):
639 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
640 indicates to the C program that the gethostbyname() routine is available
641 to look up host names in some data base or other.
643 d_gethent (d_gethent.U):
644 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
645 available to look up host names in some data base or another.
647 d_gethname (d_gethname.U):
648 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
649 indicates to the C program that the gethostname() routine may be
650 used to derive the host name.
652 d_gethostprotos (d_gethostprotos.U):
653 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
654 which indicates to the C program that <netdb.h> supplies
655 prototypes for the various gethost*() functions.
656 See also netdbtype.U for probing for various netdb types.
658 d_getlogin (d_getlogin.U):
659 This variable conditionally defines the HAS_GETLOGIN symbol, which
660 indicates to the C program that the getlogin() routine is available
661 to get the login name.
663 d_getmnt (d_getmnt.U):
664 This variable conditionally defines the HAS_GETMNT symbol, which
665 indicates to the C program that the getmnt() routine is available
666 to retrieve one or more mount info blocks by filename.
668 d_getmntent (d_getmntent.U):
669 This variable conditionally defines the HAS_GETMNTENT symbol, which
670 indicates to the C program that the getmntent() routine is available
671 to iterate through mounted files to get their mount info.
673 d_getnbyaddr (d_getnbyad.U):
674 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
675 indicates to the C program that the getnetbyaddr() routine is available
676 to look up networks by their IP addresses.
678 d_getnbyname (d_getnbynm.U):
679 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
680 indicates to the C program that the getnetbyname() routine is available
681 to look up networks by their names.
683 d_getnent (d_getnent.U):
684 This variable conditionally defines HAS_GETNETENT if getnetent() is
685 available to look up network names in some data base or another.
687 d_getnetprotos (d_getnetprotos.U):
688 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
689 which indicates to the C program that <netdb.h> supplies
690 prototypes for the various getnet*() functions.
691 See also netdbtype.U for probing for various netdb types.
693 d_getpbyname (d_getprotby.U):
694 This variable conditionally defines the HAS_GETPROTOBYNAME
695 symbol, which indicates to the C program that the
696 getprotobyname() routine is available to look up protocols
699 d_getpbynumber (d_getprotby.U):
700 This variable conditionally defines the HAS_GETPROTOBYNUMBER
701 symbol, which indicates to the C program that the
702 getprotobynumber() routine is available to look up protocols
705 d_getpent (d_getpent.U):
706 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
707 available to look up protocols in some data base or another.
709 d_getpgid (d_getpgid.U):
710 This variable conditionally defines the HAS_GETPGID symbol, which
711 indicates to the C program that the getpgid(pid) function
712 is available to get the process group id.
714 d_getpgrp2 (d_getpgrp2.U):
715 This variable conditionally defines the HAS_GETPGRP2 symbol, which
716 indicates to the C program that the getpgrp2() (as in DG/UX) routine
717 is available to get the current process group.
719 d_getpgrp (d_getpgrp.U):
720 This variable conditionally defines HAS_GETPGRP if getpgrp() is
721 available to get the current process group.
723 d_getppid (d_getppid.U):
724 This variable conditionally defines the HAS_GETPPID symbol, which
725 indicates to the C program that the getppid() routine is available
726 to get the parent process ID.
728 d_getprior (d_getprior.U):
729 This variable conditionally defines HAS_GETPRIORITY if getpriority()
730 is available to get a process's priority.
732 d_getprotoprotos (d_getprotoprotos.U):
733 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
734 which indicates to the C program that <netdb.h> supplies
735 prototypes for the various getproto*() functions.
736 See also netdbtype.U for probing for various netdb types.
738 d_getpwent (d_getpwent.U):
739 This variable conditionally defines the HAS_GETPWENT symbol, which
740 indicates to the C program that the getpwent() routine is available
741 for sequential access of the passwd database.
743 d_getsbyname (d_getsrvby.U):
744 This variable conditionally defines the HAS_GETSERVBYNAME
745 symbol, which indicates to the C program that the
746 getservbyname() routine is available to look up services
749 d_getsbyport (d_getsrvby.U):
750 This variable conditionally defines the HAS_GETSERVBYPORT
751 symbol, which indicates to the C program that the
752 getservbyport() routine is available to look up services
755 d_getsent (d_getsent.U):
756 This variable conditionally defines HAS_GETSERVENT if getservent() is
757 available to look up network services in some data base or another.
759 d_getservprotos (d_getservprotos.U):
760 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
761 which indicates to the C program that <netdb.h> supplies
762 prototypes for the various getserv*() functions.
763 See also netdbtype.U for probing for various netdb types.
765 d_getspnam (d_getspnam.U):
766 This variable conditionally defines HAS_GETSPNAM if getspnam() is
767 available to retrieve SysV shadow password entries by name.
769 d_gettimeod (d_ftime.U):
770 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
771 indicates that the gettimeofday() system call exists (to obtain a
772 sub-second accuracy clock). You should probably include <sys/resource.h>.
774 d_gnulibc (d_gnulibc.U):
775 Defined if we're dealing with the GNU C Library.
777 d_grpasswd (i_grp.U):
778 This variable conditionally defines GRPASSWD, which indicates
779 that struct group in <grp.h> contains gr_passwd.
781 d_hasmntopt (d_hasmntopt.U):
782 This variable conditionally defines the HAS_HASMNTOPT symbol, which
783 indicates to the C program that the hasmntopt() routine is available
784 to query the mount options of file systems.
787 This variable conditionally defines HAS_HTONL if htonl() and its
788 friends are available to do network order byte swapping.
791 This variable conditionally defines the HAS_ICONV symbol, which
792 indicates to the C program that the iconv() routine is available.
794 d_index (d_strchr.U):
795 This variable conditionally defines HAS_INDEX if index() and
796 rindex() are available for string searching.
798 d_inetaton (d_inetaton.U):
799 This variable conditionally defines the HAS_INET_ATON symbol, which
800 indicates to the C program that the inet_aton() function is available
801 to parse IP address "dotted-quad" strings.
803 d_int64_t (d_int64_t.U):
804 This symbol will be defined if the C compiler supports int64_t.
806 d_isascii (d_isascii.U):
807 This variable conditionally defines the HAS_ISASCII constant,
808 which indicates to the C program that isascii() is available.
811 This variable conditionally defines the HAS_ISNAN symbol, which
812 indicates to the C program that the isnan() routine is available.
814 d_isnanl (d_isnanl.U):
815 This variable conditionally defines the HAS_ISNANL symbol, which
816 indicates to the C program that the isnanl() routine is available.
818 d_killpg (d_killpg.U):
819 This variable conditionally defines the HAS_KILLPG symbol, which
820 indicates to the C program that the killpg() routine is available
821 to kill process groups.
823 d_lchown (d_lchown.U):
824 This variable conditionally defines the HAS_LCHOWN symbol, which
825 indicates to the C program that the lchown() routine is available
826 to operate on a symbolic link (instead of following the link).
828 d_ldbl_dig (d_ldbl_dig.U):
829 This variable conditionally defines d_ldbl_dig if this system's
830 header files provide LDBL_DIG, which is the number of significant
831 digits in a long double precision number.
834 This variable conditionally defines HAS_LINK if link() is
835 available to create hard links.
837 d_locconv (d_locconv.U):
838 This variable conditionally defines HAS_LOCALECONV if localeconv() is
839 available for numeric and monetary formatting conventions.
842 This variable conditionally defines HAS_LOCKF if lockf() is
843 available to do file locking.
845 d_longdbl (d_longdbl.U):
846 This variable conditionally defines HAS_LONG_DOUBLE if
847 the long double type is supported.
849 d_longlong (d_longlong.U):
850 This variable conditionally defines HAS_LONG_LONG if
851 the long long type is supported.
853 d_lseekproto (d_lseekproto.U):
854 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
855 which indicates to the C program that the system provides
856 a prototype for the lseek() function. Otherwise, it is
857 up to the program to supply one.
860 This variable conditionally defines HAS_LSTAT if lstat() is
861 available to do file stats on symbolic links.
863 d_madvise (d_madvise.U):
864 This variable conditionally defines HAS_MADVISE if madvise() is
865 available to map a file into memory.
868 This variable conditionally defines the HAS_MBLEN symbol, which
869 indicates to the C program that the mblen() routine is available
870 to find the number of bytes in a multibye character.
872 d_mbstowcs (d_mbstowcs.U):
873 This variable conditionally defines the HAS_MBSTOWCS symbol, which
874 indicates to the C program that the mbstowcs() routine is available
875 to convert a multibyte string into a wide character string.
877 d_mbtowc (d_mbtowc.U):
878 This variable conditionally defines the HAS_MBTOWC symbol, which
879 indicates to the C program that the mbtowc() routine is available
880 to convert multibyte to a wide character.
882 d_memchr (d_memchr.U):
883 This variable conditionally defines the HAS_MEMCHR symbol, which
884 indicates to the C program that the memchr() routine is available
885 to locate characters within a C string.
887 d_memcmp (d_memcmp.U):
888 This variable conditionally defines the HAS_MEMCMP symbol, which
889 indicates to the C program that the memcmp() routine is available
890 to compare blocks of memory.
892 d_memcpy (d_memcpy.U):
893 This variable conditionally defines the HAS_MEMCPY symbol, which
894 indicates to the C program that the memcpy() routine is available
895 to copy blocks of memory.
897 d_memmove (d_memmove.U):
898 This variable conditionally defines the HAS_MEMMOVE symbol, which
899 indicates to the C program that the memmove() routine is available
900 to copy potentatially overlapping blocks of memory.
902 d_memset (d_memset.U):
903 This variable conditionally defines the HAS_MEMSET symbol, which
904 indicates to the C program that the memset() routine is available
905 to set blocks of memory.
908 This variable conditionally defines the HAS_MKDIR symbol, which
909 indicates to the C program that the mkdir() routine is available
910 to create directories..
912 d_mkdtemp (d_mkdtemp.U):
913 This variable conditionally defines the HAS_MKDTEMP symbol, which
914 indicates to the C program that the mkdtemp() routine is available
915 to exclusively create a uniquely named temporary directory.
917 d_mkfifo (d_mkfifo.U):
918 This variable conditionally defines the HAS_MKFIFO symbol, which
919 indicates to the C program that the mkfifo() routine is available.
921 d_mkstemp (d_mkstemp.U):
922 This variable conditionally defines the HAS_MKSTEMP symbol, which
923 indicates to the C program that the mkstemp() routine is available
924 to exclusively create and open a uniquely named temporary file.
926 d_mkstemps (d_mkstemps.U):
927 This variable conditionally defines the HAS_MKSTEMPS symbol, which
928 indicates to the C program that the mkstemps() routine is available
929 to exclusively create and open a uniquely named (with a suffix)
932 d_mktime (d_mktime.U):
933 This variable conditionally defines the HAS_MKTIME symbol, which
934 indicates to the C program that the mktime() routine is available.
937 This variable conditionally defines HAS_MMAP if mmap() is
938 available to map a file into memory.
941 This variable conditionally defines the HAS_MODFL symbol, which
942 indicates to the C program that the modfl() routine is available.
944 d_mprotect (d_mprotect.U):
945 This variable conditionally defines HAS_MPROTECT if mprotect() is
946 available to modify the access protection of a memory mapped file.
949 This variable conditionally defines the HAS_MSG symbol, which
950 indicates that the entire msg*(2) library is present.
952 d_msg_ctrunc (d_socket.U):
953 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
954 which indicates that the MSG_CTRUNC is available. #ifdef is
955 not enough because it may be an enum, glibc has been known to do this.
957 d_msg_dontroute (d_socket.U):
958 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
959 which indicates that the MSG_DONTROUTE is available. #ifdef is
960 not enough because it may be an enum, glibc has been known to do this.
962 d_msg_oob (d_socket.U):
963 This variable conditionally defines the HAS_MSG_OOB symbol,
964 which indicates that the MSG_OOB is available. #ifdef is
965 not enough because it may be an enum, glibc has been known to do this.
967 d_msg_peek (d_socket.U):
968 This variable conditionally defines the HAS_MSG_PEEK symbol,
969 which indicates that the MSG_PEEK is available. #ifdef is
970 not enough because it may be an enum, glibc has been known to do this.
972 d_msg_proxy (d_socket.U):
973 This variable conditionally defines the HAS_MSG_PROXY symbol,
974 which indicates that the MSG_PROXY is available. #ifdef is
975 not enough because it may be an enum, glibc has been known to do this.
977 d_msgctl (d_msgctl.U):
978 This variable conditionally defines the HAS_MSGCTL symbol, which
979 indicates to the C program that the msgctl() routine is available.
981 d_msgget (d_msgget.U):
982 This variable conditionally defines the HAS_MSGGET symbol, which
983 indicates to the C program that the msgget() routine is available.
985 d_msgrcv (d_msgrcv.U):
986 This variable conditionally defines the HAS_MSGRCV symbol, which
987 indicates to the C program that the msgrcv() routine is available.
989 d_msgsnd (d_msgsnd.U):
990 This variable conditionally defines the HAS_MSGSND symbol, which
991 indicates to the C program that the msgsnd() routine is available.
994 This variable conditionally defines HAS_MSYNC if msync() is
995 available to synchronize a mapped file.
997 d_munmap (d_munmap.U):
998 This variable conditionally defines HAS_MUNMAP if munmap() is
999 available to unmap a region mapped by mmap().
1001 d_mymalloc (mallocsrc.U):
1002 This variable conditionally defines MYMALLOC in case other parts
1003 of the source want to take special action if MYMALLOC is used.
1004 This may include different sorts of profiling or error detection.
1007 This variable conditionally defines the HAS_NICE symbol, which
1008 indicates to the C program that the nice() routine is available.
1010 d_nv_preserves_uv (perlxv.U):
1011 This variable indicates whether a variable of type nvtype
1012 can preserve all the bits a variable of type uvtype.
1014 d_off64_t (d_off64_t.U):
1015 This symbol will be defined if the C compiler supports off64_t.
1017 d_old_pthread_create_joinable (d_pthrattrj.U):
1018 This variable conditionally defines pthread_create_joinable.
1019 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1021 d_oldpthreads (usethreads.U):
1022 This variable conditionally defines the OLD_PTHREADS_API symbol,
1023 and indicates that Perl should be built to use the old
1024 draft POSIX threads API. This is only potentially meaningful if
1027 d_oldsock (d_socket.U):
1028 This variable conditionally defines the OLDSOCKET symbol, which
1029 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1031 d_open3 (d_open3.U):
1032 This variable conditionally defines the HAS_OPEN3 manifest constant,
1033 which indicates to the C program that the 3 argument version of
1034 the open(2) function is available.
1036 d_pathconf (d_pathconf.U):
1037 This variable conditionally defines the HAS_PATHCONF symbol, which
1038 indicates to the C program that the pathconf() routine is available
1039 to determine file-system related limits and options associated
1040 with a given filename.
1042 d_pause (d_pause.U):
1043 This variable conditionally defines the HAS_PAUSE symbol, which
1044 indicates to the C program that the pause() routine is available
1045 to suspend a process until a signal is received.
1047 d_perl_otherlibdirs (otherlibdirs.U):
1048 This variable conditionally defines PERL_OTHERLIBDIRS, which
1049 contains a colon-separated set of paths for the perl binary to
1050 include in @INC. See also otherlibdirs.
1052 d_phostname (d_gethname.U):
1053 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1054 contains the shell command which, when fed to popen(), may be
1055 used to derive the host name.
1058 This variable conditionally defines the HAS_PIPE symbol, which
1059 indicates to the C program that the pipe() routine is available
1060 to create an inter-process channel.
1063 This variable conditionally defines the HAS_POLL symbol, which
1064 indicates to the C program that the poll() routine is available
1065 to poll active file descriptors.
1067 d_portable (d_portable.U):
1068 This variable conditionally defines the PORTABLE symbol, which
1069 indicates to the C program that it should not assume that it is
1070 running on the machine it was compiled on.
1072 d_PRId64 (quadfio.U):
1073 This variable conditionally defines the PERL_PRId64 symbol, which
1074 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1076 d_PRIeldbl (longdblfio.U):
1077 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1078 indiciates that stdio has a symbol to print long doubles.
1080 d_PRIEldbl (longdblfio.U):
1081 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1082 indiciates that stdio has a symbol to print long doubles.
1084 d_PRIfldbl (longdblfio.U):
1085 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1086 indiciates that stdio has a symbol to print long doubles.
1088 d_PRIFldbl (longdblfio.U):
1089 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1090 indiciates that stdio has a symbol to print long doubles.
1092 d_PRIgldbl (longdblfio.U):
1093 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1094 indiciates that stdio has a symbol to print long doubles.
1096 d_PRIGldbl (longdblfio.U):
1097 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1098 indiciates that stdio has a symbol to print long doubles.
1100 d_PRIi64 (quadfio.U):
1101 This variable conditionally defines the PERL_PRIi64 symbol, which
1102 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1104 d_PRIo64 (quadfio.U):
1105 This variable conditionally defines the PERL_PRIo64 symbol, which
1106 indiciates that stdio has a symbol to print 64-bit octal numbers.
1108 d_PRIu64 (quadfio.U):
1109 This variable conditionally defines the PERL_PRIu64 symbol, which
1110 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1113 d_PRIx64 (quadfio.U):
1114 This variable conditionally defines the PERL_PRIx64 symbol, which
1115 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1117 d_PRIX64 (quadfio.U):
1118 This variable conditionally defines the PERL_PRIX64 symbol, which
1119 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1121 d_pthread_yield (d_pthread_y.U):
1122 This variable conditionally defines the HAS_PTHREAD_YIELD
1123 symbol if the pthread_yield routine is available to yield
1124 the execution of the current thread.
1127 This variable conditionally defines PWAGE, which indicates
1128 that struct passwd contains pw_age.
1130 d_pwchange (i_pwd.U):
1131 This variable conditionally defines PWCHANGE, which indicates
1132 that struct passwd contains pw_change.
1134 d_pwclass (i_pwd.U):
1135 This variable conditionally defines PWCLASS, which indicates
1136 that struct passwd contains pw_class.
1138 d_pwcomment (i_pwd.U):
1139 This variable conditionally defines PWCOMMENT, which indicates
1140 that struct passwd contains pw_comment.
1142 d_pwexpire (i_pwd.U):
1143 This variable conditionally defines PWEXPIRE, which indicates
1144 that struct passwd contains pw_expire.
1146 d_pwgecos (i_pwd.U):
1147 This variable conditionally defines PWGECOS, which indicates
1148 that struct passwd contains pw_gecos.
1150 d_pwpasswd (i_pwd.U):
1151 This variable conditionally defines PWPASSWD, which indicates
1152 that struct passwd contains pw_passwd.
1154 d_pwquota (i_pwd.U):
1155 This variable conditionally defines PWQUOTA, which indicates
1156 that struct passwd contains pw_quota.
1158 d_qgcvt (d_qgcvt.U):
1159 This variable conditionally defines the HAS_QGCVT symbol, which
1160 indicates to the C program that the qgcvt() routine is available.
1162 d_quad (quadtype.U):
1163 This variable, if defined, tells that there's a 64-bit integer type,
1166 d_readdir (d_readdir.U):
1167 This variable conditionally defines HAS_READDIR if readdir() is
1168 available to read directory entries.
1170 d_readlink (d_readlink.U):
1171 This variable conditionally defines the HAS_READLINK symbol, which
1172 indicates to the C program that the readlink() routine is available
1173 to read the value of a symbolic link.
1175 d_rename (d_rename.U):
1176 This variable conditionally defines the HAS_RENAME symbol, which
1177 indicates to the C program that the rename() routine is available
1180 d_rewinddir (d_readdir.U):
1181 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1184 d_rmdir (d_rmdir.U):
1185 This variable conditionally defines HAS_RMDIR if rmdir() is
1186 available to remove directories.
1188 d_safebcpy (d_safebcpy.U):
1189 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1190 the bcopy() routine can do overlapping copies.
1192 d_safemcpy (d_safemcpy.U):
1193 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1194 the memcpy() routine can do overlapping copies.
1196 d_sanemcmp (d_sanemcmp.U):
1197 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1198 the memcpy() routine is available and can be used to compare relative
1199 magnitudes of chars with their high bits set.
1201 d_sched_yield (d_pthread_y.U):
1202 This variable conditionally defines the HAS_SCHED_YIELD
1203 symbol if the sched_yield routine is available to yield
1204 the execution of the current thread.
1206 d_scm_rights (d_socket.U):
1207 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1208 which indicates that the SCM_RIGHTS is available. #ifdef is
1209 not enough because it may be an enum, glibc has been known to do this.
1211 d_seekdir (d_readdir.U):
1212 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1215 d_select (d_select.U):
1216 This variable conditionally defines HAS_SELECT if select() is
1217 available to select active file descriptors. A <sys/time.h>
1218 inclusion may be necessary for the timeout field.
1221 This variable conditionally defines the HAS_SEM symbol, which
1222 indicates that the entire sem*(2) library is present.
1224 d_semctl (d_semctl.U):
1225 This variable conditionally defines the HAS_SEMCTL symbol, which
1226 indicates to the C program that the semctl() routine is available.
1228 d_semctl_semid_ds (d_union_semun.U):
1229 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1230 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1232 d_semctl_semun (d_union_semun.U):
1233 This variable conditionally defines USE_SEMCTL_SEMUN, which
1234 indicates that union semun is to be used for semctl IPC_STAT.
1236 d_semget (d_semget.U):
1237 This variable conditionally defines the HAS_SEMGET symbol, which
1238 indicates to the C program that the semget() routine is available.
1240 d_semop (d_semop.U):
1241 This variable conditionally defines the HAS_SEMOP symbol, which
1242 indicates to the C program that the semop() routine is available.
1244 d_setegid (d_setegid.U):
1245 This variable conditionally defines the HAS_SETEGID symbol, which
1246 indicates to the C program that the setegid() routine is available
1247 to change the effective gid of the current program.
1249 d_seteuid (d_seteuid.U):
1250 This variable conditionally defines the HAS_SETEUID symbol, which
1251 indicates to the C program that the seteuid() routine is available
1252 to change the effective uid of the current program.
1254 d_setgrent (d_setgrent.U):
1255 This variable conditionally defines the HAS_SETGRENT symbol, which
1256 indicates to the C program that the setgrent() routine is available
1257 for initializing sequential access to the group database.
1259 d_setgrps (d_setgrps.U):
1260 This variable conditionally defines the HAS_SETGROUPS symbol, which
1261 indicates to the C program that the setgroups() routine is available
1262 to set the list of process groups.
1264 d_sethent (d_sethent.U):
1265 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1268 d_setlinebuf (d_setlnbuf.U):
1269 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1270 indicates to the C program that the setlinebuf() routine is available
1271 to change stderr or stdout from block-buffered or unbuffered to a
1274 d_setlocale (d_setlocale.U):
1275 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1276 available to handle locale-specific ctype implementations.
1278 d_setnent (d_setnent.U):
1279 This variable conditionally defines HAS_SETNETENT if setnetent() is
1282 d_setpent (d_setpent.U):
1283 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1286 d_setpgid (d_setpgid.U):
1287 This variable conditionally defines the HAS_SETPGID symbol if the
1288 setpgid(pid, gpid) function is available to set process group ID.
1290 d_setpgrp2 (d_setpgrp2.U):
1291 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1292 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1293 is available to set the current process group.
1295 d_setpgrp (d_setpgrp.U):
1296 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1297 available to set the current process group.
1299 d_setprior (d_setprior.U):
1300 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1301 is available to set a process's priority.
1303 d_setpwent (d_setpwent.U):
1304 This variable conditionally defines the HAS_SETPWENT symbol, which
1305 indicates to the C program that the setpwent() routine is available
1306 for initializing sequential access to the passwd database.
1308 d_setregid (d_setregid.U):
1309 This variable conditionally defines HAS_SETREGID if setregid() is
1310 available to change the real and effective gid of the current
1313 d_setresgid (d_setregid.U):
1314 This variable conditionally defines HAS_SETRESGID if setresgid() is
1315 available to change the real, effective and saved gid of the current
1318 d_setresuid (d_setreuid.U):
1319 This variable conditionally defines HAS_SETREUID if setresuid() is
1320 available to change the real, effective and saved uid of the current
1323 d_setreuid (d_setreuid.U):
1324 This variable conditionally defines HAS_SETREUID if setreuid() is
1325 available to change the real and effective uid of the current
1328 d_setrgid (d_setrgid.U):
1329 This variable conditionally defines the HAS_SETRGID symbol, which
1330 indicates to the C program that the setrgid() routine is available
1331 to change the real gid of the current program.
1333 d_setruid (d_setruid.U):
1334 This variable conditionally defines the HAS_SETRUID symbol, which
1335 indicates to the C program that the setruid() routine is available
1336 to change the real uid of the current program.
1338 d_setsent (d_setsent.U):
1339 This variable conditionally defines HAS_SETSERVENT if setservent() is
1342 d_setsid (d_setsid.U):
1343 This variable conditionally defines HAS_SETSID if setsid() is
1344 available to set the process group ID.
1346 d_setvbuf (d_setvbuf.U):
1347 This variable conditionally defines the HAS_SETVBUF symbol, which
1348 indicates to the C program that the setvbuf() routine is available
1349 to change buffering on an open stdio stream.
1352 This variable conditionally defines the USE_SFIO symbol,
1353 and indicates whether sfio is available (and should be used).
1356 This variable conditionally defines the HAS_SHM symbol, which
1357 indicates that the entire shm*(2) library is present.
1359 d_shmat (d_shmat.U):
1360 This variable conditionally defines the HAS_SHMAT symbol, which
1361 indicates to the C program that the shmat() routine is available.
1363 d_shmatprototype (d_shmat.U):
1364 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1365 symbol, which indicates that sys/shm.h has a prototype for
1368 d_shmctl (d_shmctl.U):
1369 This variable conditionally defines the HAS_SHMCTL symbol, which
1370 indicates to the C program that the shmctl() routine is available.
1372 d_shmdt (d_shmdt.U):
1373 This variable conditionally defines the HAS_SHMDT symbol, which
1374 indicates to the C program that the shmdt() routine is available.
1376 d_shmget (d_shmget.U):
1377 This variable conditionally defines the HAS_SHMGET symbol, which
1378 indicates to the C program that the shmget() routine is available.
1380 d_sigaction (d_sigaction.U):
1381 This variable conditionally defines the HAS_SIGACTION symbol, which
1382 indicates that the Vr4 sigaction() routine is available.
1384 d_sigsetjmp (d_sigsetjmp.U):
1385 This variable conditionally defines the HAS_SIGSETJMP symbol,
1386 which indicates that the sigsetjmp() routine is available to
1387 call setjmp() and optionally save the process's signal mask.
1389 d_socket (d_socket.U):
1390 This variable conditionally defines HAS_SOCKET, which indicates
1391 that the BSD socket interface is supported.
1393 d_socklen_t (d_socklen_t.U):
1394 This symbol will be defined if the C compiler supports socklen_t.
1396 d_sockpair (d_socket.U):
1397 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1398 indicates that the BSD socketpair() is supported.
1400 d_sqrtl (d_sqrtl.U):
1401 This variable conditionally defines the HAS_SQRTL symbol, which
1402 indicates to the C program that the sqrtl() routine is available.
1404 d_statblks (d_statblks.U):
1405 This variable conditionally defines USE_STAT_BLOCKS
1406 if this system has a stat structure declaring
1407 st_blksize and st_blocks.
1409 d_statfs_f_flags (d_statfs_f_flags.U):
1410 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1411 symbol, which indicates to struct statfs from has f_flags member.
1412 This kind of struct statfs is coming from sys/mount.h (BSD),
1413 not from sys/statfs.h (SYSV).
1415 d_statfs_s (d_statfs_s.U):
1416 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1417 which indicates that the struct statfs is supported.
1419 d_statvfs (d_statvfs.U):
1420 This variable conditionally defines the HAS_STATVFS symbol, which
1421 indicates to the C program that the statvfs() routine is available.
1423 d_stdio_cnt_lval (d_stdstdio.U):
1424 This variable conditionally defines STDIO_CNT_LVALUE if the
1425 FILE_cnt macro can be used as an lvalue.
1427 d_stdio_ptr_lval (d_stdstdio.U):
1428 This variable conditionally defines STDIO_PTR_LVALUE if the
1429 FILE_ptr macro can be used as an lvalue.
1431 d_stdio_stream_array (stdio_streams.U):
1432 This variable tells whether there is an array holding
1435 d_stdiobase (d_stdstdio.U):
1436 This variable conditionally defines USE_STDIO_BASE if this system
1437 has a FILE structure declaring a usable _base field (or equivalent)
1440 d_stdstdio (d_stdstdio.U):
1441 This variable conditionally defines USE_STDIO_PTR if this system
1442 has a FILE structure declaring usable _ptr and _cnt fields (or
1443 equivalent) in stdio.h.
1445 d_strchr (d_strchr.U):
1446 This variable conditionally defines HAS_STRCHR if strchr() and
1447 strrchr() are available for string searching.
1449 d_strcoll (d_strcoll.U):
1450 This variable conditionally defines HAS_STRCOLL if strcoll() is
1451 available to compare strings using collating information.
1453 d_strctcpy (d_strctcpy.U):
1454 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1455 indicates to the C program that this C compiler knows how to copy
1458 d_strerrm (d_strerror.U):
1459 This variable holds what Strerrr is defined as to translate an error
1460 code condition into an error message string. It could be 'strerror'
1461 or a more complex macro emulating strrror with sys_errlist[], or the
1462 "unknown" string when both strerror and sys_errlist are missing.
1464 d_strerror (d_strerror.U):
1465 This variable conditionally defines HAS_STRERROR if strerror() is
1466 available to translate error numbers to strings.
1468 d_strtod (d_strtod.U):
1469 This variable conditionally defines the HAS_STRTOD symbol, which
1470 indicates to the C program that the strtod() routine is available
1471 to provide better numeric string conversion than atof().
1473 d_strtol (d_strtol.U):
1474 This variable conditionally defines the HAS_STRTOL symbol, which
1475 indicates to the C program that the strtol() routine is available
1476 to provide better numeric string conversion than atoi() and friends.
1478 d_strtold (d_strtold.U):
1479 This variable conditionally defines the HAS_STRTOLD symbol, which
1480 indicates to the C program that the strtold() routine is available.
1482 d_strtoll (d_strtoll.U):
1483 This variable conditionally defines the HAS_STRTOLL symbol, which
1484 indicates to the C program that the strtoll() routine is available.
1486 d_strtoul (d_strtoul.U):
1487 This variable conditionally defines the HAS_STRTOUL symbol, which
1488 indicates to the C program that the strtoul() routine is available
1489 to provide conversion of strings to unsigned long.
1491 d_strtoull (d_strtoull.U):
1492 This variable conditionally defines the HAS_STRTOULL symbol, which
1493 indicates to the C program that the strtoull() routine is available.
1495 d_strtouq (d_strtouq.U):
1496 This variable conditionally defines the HAS_STRTOUQ symbol, which
1497 indicates to the C program that the strtouq() routine is available.
1499 d_strxfrm (d_strxfrm.U):
1500 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1501 available to transform strings.
1503 d_suidsafe (d_dosuid.U):
1504 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1505 if setuid scripts can be secure. This test looks in /dev/fd/.
1507 d_symlink (d_symlink.U):
1508 This variable conditionally defines the HAS_SYMLINK symbol, which
1509 indicates to the C program that the symlink() routine is available
1510 to create symbolic links.
1512 d_syscall (d_syscall.U):
1513 This variable conditionally defines HAS_SYSCALL if syscall() is
1514 available call arbitrary system calls.
1516 d_sysconf (d_sysconf.U):
1517 This variable conditionally defines the HAS_SYSCONF symbol, which
1518 indicates to the C program that the sysconf() routine is available
1519 to determine system related limits and options.
1521 d_sysernlst (d_strerror.U):
1522 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1523 is available to translate error numbers to the symbolic name.
1525 d_syserrlst (d_strerror.U):
1526 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1527 available to translate error numbers to strings.
1529 d_system (d_system.U):
1530 This variable conditionally defines HAS_SYSTEM if system() is
1531 available to issue a shell command.
1533 d_tcgetpgrp (d_tcgtpgrp.U):
1534 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1535 indicates to the C program that the tcgetpgrp() routine is available.
1536 to get foreground process group ID.
1538 d_tcsetpgrp (d_tcstpgrp.U):
1539 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1540 indicates to the C program that the tcsetpgrp() routine is available
1541 to set foreground process group ID.
1543 d_telldir (d_readdir.U):
1544 This variable conditionally defines HAS_TELLDIR if telldir() is
1547 d_telldirproto (d_telldirproto.U):
1548 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1549 which indicates to the C program that the system provides
1550 a prototype for the telldir() function. Otherwise, it is
1551 up to the program to supply one.
1554 This variable conditionally defines the HAS_TIME symbol, which indicates
1555 that the time() routine exists. The time() routine is normaly
1556 provided on UNIX systems.
1558 d_times (d_times.U):
1559 This variable conditionally defines the HAS_TIMES symbol, which indicates
1560 that the times() routine exists. The times() routine is normaly
1561 provided on UNIX systems. You may have to include <sys/times.h>.
1563 d_truncate (d_truncate.U):
1564 This variable conditionally defines HAS_TRUNCATE if truncate() is
1565 available to truncate files.
1567 d_tzname (d_tzname.U):
1568 This variable conditionally defines HAS_TZNAME if tzname[] is
1569 available to access timezone names.
1571 d_umask (d_umask.U):
1572 This variable conditionally defines the HAS_UMASK symbol, which
1573 indicates to the C program that the umask() routine is available.
1574 to set and get the value of the file creation mask.
1576 d_uname (d_gethname.U):
1577 This variable conditionally defines the HAS_UNAME symbol, which
1578 indicates to the C program that the uname() routine may be
1579 used to derive the host name.
1581 d_union_semun (d_union_semun.U):
1582 This variable conditionally defines HAS_UNION_SEMUN if the
1583 union semun is defined by including <sys/sem.h>.
1585 d_ustat (d_ustat.U):
1586 This variable conditionally defines HAS_USTAT if ustat() is
1587 available to query file system statistics by dev_t.
1589 d_vendorarch (vendorarch.U):
1590 This variable conditionally defined PERL_VENDORARCH.
1592 d_vendorbin (vendorbin.U):
1593 This variable conditionally defines PERL_VENDORBIN.
1595 d_vendorlib (vendorlib.U):
1596 This variable conditionally defines PERL_VENDORLIB.
1598 d_vfork (d_vfork.U):
1599 This variable conditionally defines the HAS_VFORK symbol, which
1600 indicates the vfork() routine is available.
1602 d_void_closedir (d_closedir.U):
1603 This variable conditionally defines VOID_CLOSEDIR if closedir()
1604 does not return a value.
1606 d_voidsig (d_voidsig.U):
1607 This variable conditionally defines VOIDSIG if this system
1608 declares "void (*signal(...))()" in signal.h. The old way was to
1609 declare it as "int (*signal(...))()".
1611 d_voidtty (i_sysioctl.U):
1612 This variable conditionally defines USE_IOCNOTTY to indicate that the
1613 ioctl() call with TIOCNOTTY should be used to void tty association.
1614 Otherwise (on USG probably), it is enough to close the standard file
1615 decriptors and do a setpgrp().
1617 d_volatile (d_volatile.U):
1618 This variable conditionally defines the HASVOLATILE symbol, which
1619 indicates to the C program that this C compiler knows about the
1620 volatile declaration.
1622 d_vprintf (d_vprintf.U):
1623 This variable conditionally defines the HAS_VPRINTF symbol, which
1624 indicates to the C program that the vprintf() routine is available
1625 to printf with a pointer to an argument list.
1627 d_wait4 (d_wait4.U):
1628 This variable conditionally defines the HAS_WAIT4 symbol, which
1629 indicates the wait4() routine is available.
1631 d_waitpid (d_waitpid.U):
1632 This variable conditionally defines HAS_WAITPID if waitpid() is
1633 available to wait for child process.
1635 d_wcstombs (d_wcstombs.U):
1636 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1637 indicates to the C program that the wcstombs() routine is available
1638 to convert wide character strings to multibyte strings.
1640 d_wctomb (d_wctomb.U):
1641 This variable conditionally defines the HAS_WCTOMB symbol, which
1642 indicates to the C program that the wctomb() routine is available
1643 to convert a wide character to a multibyte.
1646 This variable conditionally defines the symbol XENIX, which alerts
1647 the C program that it runs under Xenix.
1650 This variable is used internally by Configure to determine the
1651 full pathname (if any) of the date program. After Configure runs,
1652 the value is reset to a plain "date" and is not useful.
1654 db_hashtype (i_db.U):
1655 This variable contains the type of the hash structure element
1656 in the <db.h> header file. In older versions of DB, it was
1657 int, while in newer ones it is u_int32_t.
1659 db_prefixtype (i_db.U):
1660 This variable contains the type of the prefix structure element
1661 in the <db.h> header file. In older versions of DB, it was
1662 int, while in newer ones it is size_t.
1664 defvoidused (voidflags.U):
1665 This variable contains the default value of the VOIDUSED symbol (15).
1667 direntrytype (i_dirent.U):
1668 This symbol is set to 'struct direct' or 'struct dirent' depending on
1669 whether dirent is available or not. You should use this pseudo type to
1670 portably declare your directory entries.
1673 This variable contains the extension that is to be used for the
1674 dynamically loaded modules that perl generaties.
1677 This variable contains the name of the dynamic loading file that
1678 will be used with the package.
1680 doublesize (doublesize.U):
1681 This variable contains the value of the DOUBLESIZE symbol, which
1682 indicates to the C program how many bytes there are in a double.
1684 drand01 (randfunc.U):
1685 Indicates the macro to be used to generate normalized
1686 random numbers. Uses randfunc, often divided by
1687 (double) (((unsigned long) 1 << randbits)) in order to
1688 normalize the result.
1689 In C programs, the macro 'Drand01' is mapped to drand01.
1691 dynamic_ext (Extensions.U):
1692 This variable holds a list of XS extension files we want to
1693 link dynamically into the package. It is used by Makefile.
1695 eagain (nblock_io.U):
1696 This variable bears the symbolic errno code set by read() when no
1697 data is present on the file and non-blocking I/O was enabled (otherwise,
1698 read() blocks naturally).
1701 This variable conditionally defines EBCDIC if this
1702 system uses EBCDIC encoding. Among other things, this
1703 means that the character ranges are not contiguous.
1707 This variable is used internally by Configure to determine the
1708 full pathname (if any) of the echo program. After Configure runs,
1709 the value is reset to a plain "echo" and is not useful.
1712 This variable is used internally by Configure to determine the
1713 full pathname (if any) of the egrep program. After Configure runs,
1714 the value is reset to a plain "egrep" and is not useful.
1717 This variable is defined but not used by Configure.
1718 The value is a plain '' and is not useful.
1721 When running under Eunice this variable contains a command which will
1722 convert a shell script to the proper form of text file for it to be
1723 executable by the shell. On other systems it is a no-op.
1726 This is an old synonym for _exe.
1729 This variable is used internally by Configure to determine the
1730 full pathname (if any) of the expr program. After Configure runs,
1731 the value is reset to a plain "expr" and is not useful.
1733 extensions (Extensions.U):
1734 This variable holds a list of all extension files (both XS and
1735 non-xs linked into the package. It is propagated to Config.pm
1736 and is typically used to test whether a particular extesion
1739 fflushall (fflushall.U):
1740 This symbol, if defined, tells that to flush
1741 all pending stdio output one must loop through all
1742 the stdio file handles stored in an array and fflush them.
1743 Note that if fflushNULL is defined, fflushall will not
1744 even be probed for and will be left undefined.
1746 fflushNULL (fflushall.U):
1747 This symbol, if defined, tells that fflush(NULL) does flush
1748 all pending stdio output.
1751 This variable is defined but not used by Configure.
1752 The value is a plain '' and is not useful.
1754 firstmakefile (Unix.U):
1755 This variable defines the first file searched by make. On unix,
1756 it is makefile (then Makefile). On case-insensitive systems,
1757 it might be something else. This is only used to deal with
1758 convoluted make depend tricks.
1761 This variable is defined but not used by Configure.
1762 The value is a plain '' and is not useful.
1764 fpossize (fpossize.U):
1765 This variable contains the size of a fpostype in bytes.
1767 fpostype (fpostype.U):
1768 This variable defines Fpos_t to be something like fpos_t, long,
1769 uint, or whatever type is used to declare file positions in libc.
1771 freetype (mallocsrc.U):
1772 This variable contains the return type of free(). It is usually
1773 void, but occasionally int.
1776 This variable contains the full pathname to 'ar', whether or
1777 not the user has specified 'portability'. This is only used
1781 This variable contains the full pathname to 'csh', whether or
1782 not the user has specified 'portability'. This is only used
1783 in the compiled C program, and we assume that all systems which
1784 can share this executable will have the same full pathname to
1787 full_sed (Loc_sed.U):
1788 This variable contains the full pathname to 'sed', whether or
1789 not the user has specified 'portability'. This is only used
1790 in the compiled C program, and we assume that all systems which
1791 can share this executable will have the same full pathname to
1795 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1796 indicate whether the compiler is version 1 or 2. This is used in
1797 setting some of the default cflags. It is set to '' if not gcc.
1800 This variable contains the format string used for printing a Gid_t.
1802 gidsign (gidsign.U):
1803 This variable contains the signedness of a gidtype.
1804 1 for unsigned, -1 for signed.
1806 gidsize (gidsize.U):
1807 This variable contains the size of a gidtype in bytes.
1809 gidtype (gidtype.U):
1810 This variable defines Gid_t to be something like gid_t, int,
1811 ushort, or whatever type is used to declare the return type
1812 of getgid(). Typically, it is the type of group ids in the kernel.
1815 This variable holds the general path (space-separated) used to
1816 find libraries. It may contain directories that do not exist on
1817 this platform, libpth is the cleaned-up version.
1820 This variable is used internally by Configure to determine the
1821 full pathname (if any) of the grep program. After Configure runs,
1822 the value is reset to a plain "grep" and is not useful.
1825 This variable contains a command that produces the text of the
1826 /etc/group file. This is normally "cat /etc/group", but can be
1827 "ypcat group" when NIS is used.
1828 On some systems, such as os390, there may be no equivalent
1829 command, in which case this variable is unset.
1831 groupstype (groupstype.U):
1832 This variable defines Groups_t to be something like gid_t, int,
1833 ushort, or whatever type is used for the second argument to
1834 getgroups() and setgroups(). Usually, this is the same as
1835 gidtype (gid_t), but sometimes it isn't.
1838 This variable is used internally by Configure to determine the
1839 full pathname (if any) of the gzip program. After Configure runs,
1840 the value is reset to a plain "gzip" and is not useful.
1842 h_fcntl (h_fcntl.U):
1843 This is variable gets set in various places to tell i_fcntl that
1844 <fcntl.h> should be included.
1846 h_sysfile (h_sysfile.U):
1847 This is variable gets set in various places to tell i_sys_file that
1848 <sys/file.h> should be included.
1851 Gives the type of hints used for previous answers. May be one of
1852 "default", "recommended" or "previous".
1855 This variable contains a command that produces the text of the
1856 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1857 "ypcat hosts" when NIS is used.
1858 On some systems, such as os390, there may be no equivalent
1859 command, in which case this variable is unset.
1862 This variable contains a flag which will tell the C compiler and loader
1863 to produce a program running with a huge memory model. If the
1864 huge model is not supported, contains the flag to produce large
1865 model programs. It is up to the Makefile to use this.
1868 This variable is the size of an I16 in bytes.
1871 This variable contains the C type used for Perl's I16.
1874 This variable is the size of an I32 in bytes.
1877 This variable contains the C type used for Perl's I32.
1880 This variable is the size of an I64 in bytes.
1883 This variable contains the C type used for Perl's I64.
1886 This variable is the size of an I8 in bytes.
1889 This variable contains the C type used for Perl's I8.
1891 i_arpainet (i_arpainet.U):
1892 This variable conditionally defines the I_ARPA_INET symbol,
1893 and indicates whether a C program should include <arpa/inet.h>.
1895 i_bsdioctl (i_sysioctl.U):
1896 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1897 indicates to the C program that <sys/bsdioctl.h> exists and should
1901 This variable conditionally defines the I_DB symbol, and indicates
1902 whether a C program may include Berkeley's DB include file <db.h>.
1905 This variable conditionally defines the I_DBM symbol, which
1906 indicates to the C program that <dbm.h> exists and should
1909 i_dirent (i_dirent.U):
1910 This variable conditionally defines I_DIRENT, which indicates
1911 to the C program that it should include <dirent.h>.
1914 This variable conditionally defines the I_DLD symbol, which
1915 indicates to the C program that <dld.h> (GNU dynamic loading)
1916 exists and should be included.
1918 i_dlfcn (i_dlfcn.U):
1919 This variable conditionally defines the I_DLFCN symbol, which
1920 indicates to the C program that <dlfcn.h> exists and should
1923 i_fcntl (i_fcntl.U):
1924 This variable controls the value of I_FCNTL (which tells
1925 the C program to include <fcntl.h>).
1927 i_float (i_float.U):
1928 This variable conditionally defines the I_FLOAT symbol, and indicates
1929 whether a C program may include <float.h> to get symbols like DBL_MAX
1930 or DBL_MIN, i.e. machine dependent floating point values.
1933 This variable conditionally defines the I_GDBM symbol, which
1934 indicates to the C program that <gdbm.h> exists and should
1938 This variable conditionally defines the I_GRP symbol, and indicates
1939 whether a C program should include <grp.h>.
1941 i_iconv (i_iconv.U):
1942 This variable conditionally defines the I_ICONV symbol, and indicates
1943 whether a C program should include <iconv.h>.
1945 i_ieeefp (i_ieeefp.U):
1946 This variable conditionally defines the I_IEEEFP symbol, and indicates
1947 whether a C program should include <ieeefp.h>.
1949 i_inttypes (i_inttypes.U):
1950 This variable conditionally defines the I_INTTYPES symbol,
1951 and indicates whether a C program should include <inttypes.h>.
1953 i_limits (i_limits.U):
1954 This variable conditionally defines the I_LIMITS symbol, and indicates
1955 whether a C program may include <limits.h> to get symbols like WORD_BIT
1958 i_locale (i_locale.U):
1959 This variable conditionally defines the I_LOCALE symbol,
1960 and indicates whether a C program should include <locale.h>.
1962 i_machcthr (i_machcthr.U):
1963 This variable conditionally defines the I_MACH_CTHREADS symbol,
1964 and indicates whether a C program should include <mach/cthreads.h>.
1966 i_malloc (i_malloc.U):
1967 This variable conditionally defines the I_MALLOC symbol, and indicates
1968 whether a C program should include <malloc.h>.
1971 This variable conditionally defines the I_MATH symbol, and indicates
1972 whether a C program may include <math.h>.
1974 i_memory (i_memory.U):
1975 This variable conditionally defines the I_MEMORY symbol, and indicates
1976 whether a C program should include <memory.h>.
1978 i_mntent (i_mntent.U):
1979 This variable conditionally defines the I_MNTENT symbol, and indicates
1980 whether a C program should include <mntent.h>.
1983 This variable conditionally defines the I_NDBM symbol, which
1984 indicates to the C program that <ndbm.h> exists and should
1987 i_netdb (i_netdb.U):
1988 This variable conditionally defines the I_NETDB symbol, and indicates
1989 whether a C program should include <netdb.h>.
1991 i_neterrno (i_neterrno.U):
1992 This variable conditionally defines the I_NET_ERRNO symbol, which
1993 indicates to the C program that <net/errno.h> exists and should
1996 i_netinettcp (i_netinettcp.U):
1997 This variable conditionally defines the I_NETINET_TCP symbol,
1998 and indicates whether a C program should include <netinet/tcp.h>.
2001 This variable conditionally defines I_NETINET_IN, which indicates
2002 to the C program that it should include <netinet/in.h>. Otherwise,
2003 you may try <sys/in.h>.
2006 This variable conditionally defines the I_POLL symbol, and indicates
2007 whether a C program should include <poll.h>.
2009 i_pthread (i_pthread.U):
2010 This variable conditionally defines the I_PTHREAD symbol,
2011 and indicates whether a C program should include <pthread.h>.
2014 This variable conditionally defines I_PWD, which indicates
2015 to the C program that it should include <pwd.h>.
2017 i_rpcsvcdbm (i_dbm.U):
2018 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2019 indicates to the C program that <rpcsvc/dbm.h> exists and should
2020 be included. Some System V systems might need this instead of <dbm.h>.
2023 This variable conditionally defines the I_SFIO symbol,
2024 and indicates whether a C program should include <sfio.h>.
2026 i_sgtty (i_termio.U):
2027 This variable conditionally defines the I_SGTTY symbol, which
2028 indicates to the C program that it should include <sgtty.h> rather
2031 i_shadow (i_shadow.U):
2032 This variable conditionally defines the I_SHADOW symbol, and indicates
2033 whether a C program should include <shadow.h>.
2035 i_socks (i_socks.U):
2036 This variable conditionally defines the I_SOCKS symbol, and indicates
2037 whether a C program should include <socks.h>.
2039 i_stdarg (i_varhdr.U):
2040 This variable conditionally defines the I_STDARG symbol, which
2041 indicates to the C program that <stdarg.h> exists and should
2044 i_stddef (i_stddef.U):
2045 This variable conditionally defines the I_STDDEF symbol, which
2046 indicates to the C program that <stddef.h> exists and should
2049 i_stdlib (i_stdlib.U):
2050 This variable conditionally defines the I_STDLIB symbol, which
2051 indicates to the C program that <stdlib.h> exists and should
2054 i_string (i_string.U):
2055 This variable conditionally defines the I_STRING symbol, which
2056 indicates that <string.h> should be included rather than <strings.h>.
2058 i_sunmath (i_sunmath.U):
2059 This variable conditionally defines the I_SUNMATH symbol, and indicates
2060 whether a C program should include <sunmath.h>.
2062 i_sysaccess (i_sysaccess.U):
2063 This variable conditionally defines the I_SYS_ACCESS symbol,
2064 and indicates whether a C program should include <sys/access.h>.
2066 i_sysdir (i_sysdir.U):
2067 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2068 whether a C program should include <sys/dir.h>.
2070 i_sysfile (i_sysfile.U):
2071 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2072 whether a C program should include <sys/file.h> to get R_OK and friends.
2074 i_sysfilio (i_sysioctl.U):
2075 This variable conditionally defines the I_SYS_FILIO symbol, which
2076 indicates to the C program that <sys/filio.h> exists and should
2077 be included in preference to <sys/ioctl.h>.
2080 This variable conditionally defines I_SYS_IN, which indicates
2081 to the C program that it should include <sys/in.h> instead of
2084 i_sysioctl (i_sysioctl.U):
2085 This variable conditionally defines the I_SYS_IOCTL symbol, which
2086 indicates to the C program that <sys/ioctl.h> exists and should
2089 i_syslog (i_syslog.U):
2090 This variable conditionally defines the I_SYSLOG symbol,
2091 and indicates whether a C program should include <syslog.h>.
2093 i_sysmman (i_sysmman.U):
2094 This variable conditionally defines the I_SYS_MMAN symbol, and
2095 indicates whether a C program should include <sys/mman.h>.
2097 i_sysmode (i_sysmode.U):
2098 This variable conditionally defines the I_SYSMODE symbol,
2099 and indicates whether a C program should include <sys/mode.h>.
2101 i_sysmount (i_sysmount.U):
2102 This variable conditionally defines the I_SYSMOUNT symbol,
2103 and indicates whether a C program should include <sys/mount.h>.
2105 i_sysndir (i_sysndir.U):
2106 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2107 whether a C program should include <sys/ndir.h>.
2109 i_sysparam (i_sysparam.U):
2110 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2111 whether a C program should include <sys/param.h>.
2113 i_sysresrc (i_sysresrc.U):
2114 This variable conditionally defines the I_SYS_RESOURCE symbol,
2115 and indicates whether a C program should include <sys/resource.h>.
2117 i_syssecrt (i_syssecrt.U):
2118 This variable conditionally defines the I_SYS_SECURITY symbol,
2119 and indicates whether a C program should include <sys/security.h>.
2121 i_sysselct (i_sysselct.U):
2122 This variable conditionally defines I_SYS_SELECT, which indicates
2123 to the C program that it should include <sys/select.h> in order to
2124 get the definition of struct timeval.
2126 i_syssockio (i_sysioctl.U):
2127 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2128 C program that socket ioctl codes may be found in <sys/sockio.h>
2129 instead of <sys/ioctl.h>.
2131 i_sysstat (i_sysstat.U):
2132 This variable conditionally defines the I_SYS_STAT symbol,
2133 and indicates whether a C program should include <sys/stat.h>.
2135 i_sysstatfs (i_sysstatfs.U):
2136 This variable conditionally defines the I_SYSSTATFS symbol,
2137 and indicates whether a C program should include <sys/statfs.h>.
2139 i_sysstatvfs (i_sysstatvfs.U):
2140 This variable conditionally defines the I_SYSSTATVFS symbol,
2141 and indicates whether a C program should include <sys/statvfs.h>.
2143 i_systime (i_time.U):
2144 This variable conditionally defines I_SYS_TIME, which indicates
2145 to the C program that it should include <sys/time.h>.
2147 i_systimek (i_time.U):
2148 This variable conditionally defines I_SYS_TIME_KERNEL, which
2149 indicates to the C program that it should include <sys/time.h>
2150 with KERNEL defined.
2152 i_systimes (i_systimes.U):
2153 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2154 whether a C program should include <sys/times.h>.
2156 i_systypes (i_systypes.U):
2157 This variable conditionally defines the I_SYS_TYPES symbol,
2158 and indicates whether a C program should include <sys/types.h>.
2160 i_sysuio (i_sysuio.U):
2161 This variable conditionally defines the I_SYSUIO symbol, and indicates
2162 whether a C program should include <sys/uio.h>.
2164 i_sysun (i_sysun.U):
2165 This variable conditionally defines I_SYS_UN, which indicates
2166 to the C program that it should include <sys/un.h> to get UNIX
2167 domain socket definitions.
2169 i_sysutsname (i_sysutsname.U):
2170 This variable conditionally defines the I_SYSUTSNAME symbol,
2171 and indicates whether a C program should include <sys/utsname.h>.
2173 i_sysvfs (i_sysvfs.U):
2174 This variable conditionally defines the I_SYSVFS symbol,
2175 and indicates whether a C program should include <sys/vfs.h>.
2177 i_syswait (i_syswait.U):
2178 This variable conditionally defines I_SYS_WAIT, which indicates
2179 to the C program that it should include <sys/wait.h>.
2181 i_termio (i_termio.U):
2182 This variable conditionally defines the I_TERMIO symbol, which
2183 indicates to the C program that it should include <termio.h> rather
2186 i_termios (i_termio.U):
2187 This variable conditionally defines the I_TERMIOS symbol, which
2188 indicates to the C program that the POSIX <termios.h> file is
2192 This variable conditionally defines I_TIME, which indicates
2193 to the C program that it should include <time.h>.
2195 i_unistd (i_unistd.U):
2196 This variable conditionally defines the I_UNISTD symbol, and indicates
2197 whether a C program should include <unistd.h>.
2199 i_ustat (i_ustat.U):
2200 This variable conditionally defines the I_USTAT symbol, and indicates
2201 whether a C program should include <ustat.h>.
2203 i_utime (i_utime.U):
2204 This variable conditionally defines the I_UTIME symbol, and indicates
2205 whether a C program should include <utime.h>.
2207 i_values (i_values.U):
2208 This variable conditionally defines the I_VALUES symbol, and indicates
2209 whether a C program may include <values.h> to get symbols like MAXLONG
2212 i_varargs (i_varhdr.U):
2213 This variable conditionally defines I_VARARGS, which indicates
2214 to the C program that it should include <varargs.h>.
2216 i_varhdr (i_varhdr.U):
2217 Contains the name of the header to be included to get va_dcl definition.
2218 Typically one of varargs.h or stdarg.h.
2220 i_vfork (i_vfork.U):
2221 This variable conditionally defines the I_VFORK symbol, and indicates
2222 whether a C program should include vfork.h.
2224 ignore_versioned_solibs (libs.U):
2225 This variable should be non-empty if non-versioned shared
2226 libraries (libfoo.so.x.y) are to be ignored (because they
2227 cannot be linked against).
2229 inc_version_list (inc_version_list.U):
2230 This variable specifies the list of subdirectories in over
2231 which perl.c:incpush() and lib/lib.pm will automatically
2232 search when adding directories to @INC. The elements in
2233 the list are separated by spaces. This is only useful
2234 if you have a perl library directory tree structured like the
2235 default one. See INSTALL for how this works. The versioned
2236 site_perl directory was introduced in 5.005, so that is the
2237 lowest possible value.
2239 inc_version_list_init (inc_version_list.U):
2240 This variable holds the same list as inc_version_list, but
2241 each item is enclosed in double quotes and separated by commas,
2242 suitable for use in the PERL_INC_VERSION_LIST initialization.
2245 This variable must preceed the normal include path to get hte
2246 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2247 Value can be "" or "/bsd43" on mips.
2250 This variable is defined but not used by Configure.
2251 The value is a plain '' and is not useful.
2253 installarchlib (archlib.U):
2254 This variable is really the same as archlibexp but may differ on
2255 those systems using AFS. For extra portability, only this variable
2256 should be used in makefiles.
2259 This variable is the same as binexp unless AFS is running in which case
2260 the user is explicitely prompted for it. This variable should always
2261 be used in your makefiles for maximum portability.
2263 installman1dir (man1dir.U):
2264 This variable is really the same as man1direxp, unless you are using
2265 AFS in which case it points to the read/write location whereas
2266 man1direxp only points to the read-only access location. For extra
2267 portability, you should only use this variable within your makefiles.
2269 installman3dir (man3dir.U):
2270 This variable is really the same as man3direxp, unless you are using
2271 AFS in which case it points to the read/write location whereas
2272 man3direxp only points to the read-only access location. For extra
2273 portability, you should only use this variable within your makefiles.
2275 installprefix (installprefix.U):
2276 This variable holds the name of the directory below which
2277 "make install" will install the package. For most users, this
2278 is the same as prefix. However, it is useful for
2279 installing the software into a different (usually temporary)
2280 location after which it can be bundled up and moved somehow
2281 to the final location specified by prefix.
2283 installprefixexp (installprefix.U):
2284 This variable holds the full absolute path of installprefix
2285 with all ~-expansion done.
2287 installprivlib (privlib.U):
2288 This variable is really the same as privlibexp but may differ on
2289 those systems using AFS. For extra portability, only this variable
2290 should be used in makefiles.
2292 installscript (scriptdir.U):
2293 This variable is usually the same as scriptdirexp, unless you are on
2294 a system running AFS, in which case they may differ slightly. You
2295 should always use this variable within your makefiles for portability.
2297 installsitearch (sitearch.U):
2298 This variable is really the same as sitearchexp but may differ on
2299 those systems using AFS. For extra portability, only this variable
2300 should be used in makefiles.
2302 installsitebin (sitebin.U):
2303 This variable is usually the same as sitebinexp, unless you are on
2304 a system running AFS, in which case they may differ slightly. You
2305 should always use this variable within your makefiles for portability.
2307 installsitelib (sitelib.U):
2308 This variable is really the same as sitelibexp but may differ on
2309 those systems using AFS. For extra portability, only this variable
2310 should be used in makefiles.
2312 installstyle (installstyle.U):
2313 This variable describes the "style" of the perl installation.
2314 This is intended to be useful for tools that need to
2315 manipulate entire perl distributions. Perl itself doesn't use
2316 this to find its libraries -- the library directories are
2317 stored directly in Config.pm. Currently, there are only two
2318 styles: "lib" and "lib/perl5". The default library locations
2319 (e.g. privlib, sitelib) are either $prefix/lib or
2320 $prefix/lib/perl5. The former is useful if $prefix is a
2321 directory dedicated to perl (e.g. /opt/perl), while the latter
2322 is useful if $prefix is shared by many packages, e.g. if
2324 This may later be extended to include other information, so
2325 be careful with pattern-matching on the results.
2326 For compatibility with perl5.005 and earlier, the default
2327 setting is based on whether or not $prefix contains the string
2330 installusrbinperl (instubperl.U):
2331 This variable tells whether Perl should be installed also as
2332 /usr/bin/perl in addition to
2335 installvendorarch (vendorarch.U):
2336 This variable is really the same as vendorarchexp but may differ on
2337 those systems using AFS. For extra portability, only this variable
2338 should be used in makefiles.
2340 installvendorbin (vendorbin.U):
2341 This variable is really the same as vendorbinexp but may differ on
2342 those systems using AFS. For extra portability, only this variable
2343 should be used in makefiles.
2345 installvendorlib (vendorlib.U):
2346 This variable is really the same as vendorlibexp but may differ on
2347 those systems using AFS. For extra portability, only this variable
2348 should be used in makefiles.
2350 intsize (intsize.U):
2351 This variable contains the value of the INTSIZE symbol, which
2352 indicates to the C program how many bytes there are in an int.
2354 ivdformat (perlxvf.U):
2355 This variable contains the format string used for printing
2356 a Perl IV as a signed decimal integer.
2359 This variable is the size of an IV in bytes.
2362 This variable contains the C type used for Perl's IV.
2364 known_extensions (Extensions.U):
2365 This variable holds a list of all XS extensions included in
2369 This variable is defined but not used by Configure.
2370 The value is a plain '' and is not useful.
2373 This variable contains a flag which will tell the C compiler and loader
2374 to produce a program running with a large memory model. It is up to
2375 the Makefile to use this.
2378 This variable indicates the program to be used to link
2379 libraries for dynamic loading. On some systems, it is 'ld'.
2380 On ELF systems, it should be $cc. Mostly, we'll try to respect
2381 the hint file setting.
2383 lddlflags (dlsrc.U):
2384 This variable contains any special flags that might need to be
2385 passed to $ld to create a shared library suitable for dynamic
2386 loading. It is up to the makefile to use it. For hpux, it
2387 should be '-b'. For sunos 4.1, it is empty.
2389 ldflags (ccflags.U):
2390 This variable contains any additional C loader flags desired by
2391 the user. It is up to the Makefile to use this.
2393 ldlibpthname (libperl.U):
2394 This variable holds the name of the shared library
2395 search path, often LD_LIBRARY_PATH. To get an empty
2396 string, the hints file must set this to 'none'.
2399 This variable is used internally by Configure to determine the
2400 full pathname (if any) of the less program. After Configure runs,
2401 the value is reset to a plain "less" and is not useful.
2404 This is an old synonym for _a.
2407 This variable contains the location of the C library.
2409 libperl (libperl.U):
2410 The perl executable is obtained by linking perlmain.c with
2411 libperl, any static extensions (usually just DynaLoader),
2412 and any other libraries needed on this system. libperl
2413 is usually libperl.a, but can also be libperl.so.xxx if
2414 the user wishes to build a perl executable with a shared
2418 This variable holds the general path (space-separated) used to find
2419 libraries. It is intended to be used by other units.
2422 This variable holds the additional libraries we want to use.
2423 It is up to the Makefile to deal with it.
2426 This variable holds the directory names aka dirnames of the libraries
2427 we found and accepted, duplicates are removed.
2430 This variable holds the filenames aka basenames of the libraries
2431 we found and accepted.
2434 This variable holds the full pathnames of the libraries
2435 we found and accepted.
2438 This variable holds the directory names probed for libraries.
2440 libswanted (Myinit.U):
2441 This variable holds a list of all the libraries we want to
2442 search. The order is chosen to pick up the c library
2443 ahead of ucb or bsd libraries for SVR4.
2446 This variable is defined but not used by Configure.
2447 The value is a plain '' and is not useful.
2450 This variable is defined but not used by Configure.
2451 The value is a plain '' and is not useful.
2453 lkflags (ccflags.U):
2454 This variable contains any additional C partial linker flags desired by
2455 the user. It is up to the Makefile to use this.
2458 This variable is used internally by Configure to determine the
2459 full pathname (if any) of the ln program. After Configure runs,
2460 the value is reset to a plain "ln" and is not useful.
2463 This variable holds the name of the command to make
2464 symbolic links (if they are supported). It can be used
2465 in the Makefile. It is either 'ln -s' or 'ln'
2467 locincpth (ccflags.U):
2468 This variable contains a list of additional directories to be
2469 searched by the compiler. The appropriate '-I' directives will
2470 be added to ccflags. This is intended to simplify setting
2471 local directories from the Configure command line.
2472 It's not much, but it parallels the loclibpth stuff in libpth.U.
2474 loclibpth (libpth.U):
2475 This variable holds the paths (space-separated) used to find local
2476 libraries. It is prepended to libpth, and is intended to be easily
2477 set from the command line.
2479 longdblsize (d_longdbl.U):
2480 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2481 indicates to the C program how many bytes there are in a long double,
2482 if this system supports long doubles.
2484 longlongsize (d_longlong.U):
2485 This variable contains the value of the LONGLONGSIZE symbol, which
2486 indicates to the C program how many bytes there are in a long long,
2487 if this system supports long long.
2489 longsize (intsize.U):
2490 This variable contains the value of the LONGSIZE symbol, which
2491 indicates to the C program how many bytes there are in a long.
2494 This variable is defined but not used by Configure.
2495 The value is a plain '' and is not useful.
2498 This variable is defined but not used by Configure.
2499 The value is a plain '' and is not useful.
2502 This variable is used internally by Configure to determine the
2503 full pathname (if any) of the ls program. After Configure runs,
2504 the value is reset to a plain "ls" and is not useful.
2506 lseeksize (lseektype.U):
2507 This variable defines lseektype to be something like off_t, long,
2508 or whatever type is used to declare lseek offset's type in the
2509 kernel (which also appears to be lseek's return type).
2511 lseektype (lseektype.U):
2512 This variable defines lseektype to be something like off_t, long,
2513 or whatever type is used to declare lseek offset's type in the
2514 kernel (which also appears to be lseek's return type).
2517 This variable is defined but not used by Configure.
2518 The value is a plain '' and is not useful.
2521 This variable is defined but not used by Configure.
2522 The value is a plain '' and is not useful.
2525 This variable is used internally by Configure to determine the
2526 full pathname (if any) of the make program. After Configure runs,
2527 the value is reset to a plain "make" and is not useful.
2529 make_set_make (make.U):
2530 Some versions of 'make' set the variable MAKE. Others do not.
2531 This variable contains the string to be included in Makefile.SH
2532 so that MAKE is set if needed, and not if not needed.
2533 Possible values are:
2534 make_set_make='#' # If your make program handles this for you,
2535 make_set_make="MAKE=$make" # if it doesn't.
2536 I used a comment character so that we can distinguish a
2537 'set' value (from a previous config.sh or Configure '-D' option)
2538 from an uncomputed value.
2540 mallocobj (mallocsrc.U):
2541 This variable contains the name of the malloc.o that this package
2542 generates, if that malloc.o is preferred over the system malloc.
2543 Otherwise the value is null. This variable is intended for generating
2544 Makefiles. See mallocsrc.
2546 mallocsrc (mallocsrc.U):
2547 This variable contains the name of the malloc.c that comes with
2548 the package, if that malloc.c is preferred over the system malloc.
2549 Otherwise the value is null. This variable is intended for generating
2552 malloctype (mallocsrc.U):
2553 This variable contains the kind of ptr returned by malloc and realloc.
2555 man1dir (man1dir.U):
2556 This variable contains the name of the directory in which manual
2557 source pages are to be put. It is the responsibility of the
2558 Makefile.SH to get the value of this into the proper command.
2559 You must be prepared to do the ~name expansion yourself.
2561 man1direxp (man1dir.U):
2562 This variable is the same as the man1dir variable, but is filename
2563 expanded at configuration time, for convenient use in makefiles.
2565 man1ext (man1dir.U):
2566 This variable contains the extension that the manual page should
2567 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2570 man3dir (man3dir.U):
2571 This variable contains the name of the directory in which manual
2572 source pages are to be put. It is the responsibility of the
2573 Makefile.SH to get the value of this into the proper command.
2574 You must be prepared to do the ~name expansion yourself.
2576 man3direxp (man3dir.U):
2577 This variable is the same as the man3dir variable, but is filename
2578 expanded at configuration time, for convenient use in makefiles.
2580 man3ext (man3dir.U):
2581 This variable contains the extension that the manual page should
2582 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2586 This variable is used internally by Configure to determine the
2587 full pathname (if any) of the Mcc program. After Configure runs,
2588 the value is reset to a plain "Mcc" and is not useful.
2591 This variable contains a flag which will tell the C compiler and loader
2592 to produce a program running with a medium memory model. If the
2593 medium model is not supported, contains the flag to produce large
2594 model programs. It is up to the Makefile to use this.
2596 mips_type (usrinc.U):
2597 This variable holds the environment type for the mips system.
2598 Possible values are "BSD 4.3" and "System V".
2601 This variable is used internally by Configure to determine the
2602 full pathname (if any) of the mkdir program. After Configure runs,
2603 the value is reset to a plain "mkdir" and is not useful.
2605 mmaptype (d_mmap.U):
2606 This symbol contains the type of pointer returned by mmap()
2607 (and simultaneously the type of the first argument).
2608 It can be 'void *' or 'caddr_t'.
2611 This variable contains the list of memory models supported by this
2612 system. Possible component values are none, split, unsplit, small,
2613 medium, large, and huge. The component values are space separated.
2615 modetype (modetype.U):
2616 This variable defines modetype to be something like mode_t,
2617 int, unsigned short, or whatever type is used to declare file
2618 modes for system calls.
2621 This variable is used internally by Configure to determine the
2622 full pathname (if any) of the more program. After Configure runs,
2623 the value is reset to a plain "more" and is not useful.
2625 multiarch (multiarch.U):
2626 This variable conditionally defines the MULTIARCH symbol
2627 which signifies the presence of multiplatform files.
2628 This is normally set by hints files.
2631 This variable is defined but not used by Configure.
2632 The value is a plain '' and is not useful.
2634 myarchname (archname.U):
2635 This variable holds the architecture name computed by Configure in
2636 a previous run. It is not intended to be perused by any user and
2637 should never be set in a hint file.
2639 mydomain (myhostname.U):
2640 This variable contains the eventual value of the MYDOMAIN symbol,
2641 which is the domain of the host the program is going to run on.
2642 The domain must be appended to myhostname to form a complete host name.
2643 The dot comes with mydomain, and need not be supplied by the program.
2645 myhostname (myhostname.U):
2646 This variable contains the eventual value of the MYHOSTNAME symbol,
2647 which is the name of the host the program is going to run on.
2648 The domain is not kept with hostname, but must be gotten from mydomain.
2649 The dot comes with mydomain, and need not be supplied by the program.
2651 myuname (Oldconfig.U):
2652 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2653 pseudo variables assignments in the output are stripped, thank you. The
2654 whole thing is then lower-cased.
2657 This variable contains the '-n' flag if that is what causes the echo
2658 command to suppress newline. Otherwise it is null. Correct usage is
2659 $echo $n "prompt for a question: $c".
2661 netdb_hlen_type (netdbtype.U):
2662 This variable holds the type used for the 2nd argument to
2663 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2664 This is only useful if you have gethostbyaddr(), naturally.
2666 netdb_host_type (netdbtype.U):
2667 This variable holds the type used for the 1st argument to
2668 gethostbyaddr(). Usually, this is char * or void *, possibly
2669 with or without a const prefix.
2670 This is only useful if you have gethostbyaddr(), naturally.
2672 netdb_name_type (netdbtype.U):
2673 This variable holds the type used for the argument to
2674 gethostbyname(). Usually, this is char * or const char *.
2675 This is only useful if you have gethostbyname(), naturally.
2677 netdb_net_type (netdbtype.U):
2678 This variable holds the type used for the 1st argument to
2679 getnetbyaddr(). Usually, this is int or long.
2680 This is only useful if you have getnetbyaddr(), naturally.
2683 This variable is used internally by Configure to determine the
2684 full pathname (if any) of the nm program. After Configure runs,
2685 the value is reset to a plain "nm" and is not useful.
2688 This variable holds the options that may be necessary for nm.
2690 nm_so_opt (usenm.U):
2691 This variable holds the options that may be necessary for nm
2692 to work on a shared library but that can not be used on an
2693 archive library. Currently, this is only used by Linux, where
2694 nm --dynamic is *required* to get symbols from an ELF library which
2695 has been stripped, but nm --dynamic is *fatal* on an archive library.
2696 Maybe Linux should just always set usenm=false.
2698 nonxs_ext (Extensions.U):
2699 This variable holds a list of all non-xs extensions included
2700 in the package. All of them will be built.
2703 This variable is used internally by Configure to determine the
2704 full pathname (if any) of the nroff program. After Configure runs,
2705 the value is reset to a plain "nroff" and is not useful.
2708 This variable is the size of an NV in bytes.
2711 This variable contains the C type used for Perl's NV.
2713 o_nonblock (nblock_io.U):
2714 This variable bears the symbol value to be used during open() or fcntl()
2715 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2716 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2717 but that is only supported by some devices.
2720 This is an old synonym for _o.
2722 old_pthread_create_joinable (d_pthrattrj.U):
2723 This variable defines the constant to use for creating joinable
2724 (aka undetached) pthreads. Unused if pthread.h defines
2725 PTHREAD_CREATE_JOINABLE. If used, possible values are
2726 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2728 optimize (ccflags.U):
2729 This variable contains any optimizer/debugger flag that should be used.
2730 It is up to the Makefile to use it.
2732 orderlib (orderlib.U):
2733 This variable is "true" if the components of libraries must be ordered
2734 (with `lorder $* | tsort`) before placing them in an archive. Set to
2735 "false" if ranlib or ar can generate random libraries.
2737 osname (Oldconfig.U):
2738 This variable contains the operating system name (e.g. sunos,
2739 solaris, hpux, etc.). It can be useful later on for setting
2740 defaults. Any spaces are replaced with underscores. It is set
2741 to a null string if we can't figure it out.
2743 osvers (Oldconfig.U):
2744 This variable contains the operating system version (e.g.
2745 4.1.3, 5.2, etc.). It is primarily used for helping select
2746 an appropriate hints file, but might be useful elsewhere for
2747 setting defaults. It is set to '' if we can't figure it out.
2748 We try to be flexible about how much of the version number
2749 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2750 same for this package, hints files might just be os_4.0 or
2751 os_4.1, etc., not keeping separate files for each little release.
2753 otherlibdirs (otherlibdirs.U):
2754 This variable contains a colon-separated set of paths for the perl
2755 binary to search for additional library files or modules.
2756 These directories will be tacked to the end of @INC.
2757 Perl will automatically search below each path for version-
2758 and architecture-specific directories. See inc_version_list
2760 A value of ' ' means 'none' and is used to preserve this value
2761 for the next run through Configure.
2763 package (package.U):
2764 This variable contains the name of the package being constructed.
2765 It is primarily intended for the use of later Configure units.
2768 This variable contains the name of the preferred pager on the system.
2769 Usual values are (the full pathnames of) more, less, pg, or cat.
2772 This variable contains a command that produces the text of the
2773 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2774 "ypcat passwd" when NIS is used.
2775 On some systems, such as os390, there may be no equivalent
2776 command, in which case this variable is unset.
2778 patchlevel (patchlevel.U):
2779 The patchlevel level of this package.
2780 The value of patchlevel comes from the patchlevel.h file.
2781 In a version number such as 5.6.1, this is the "6".
2782 In patchlevel.h, this is referred to as "PERL_VERSION".
2785 This is an old synonym for p_ in Head.U, the character
2786 used to separate elements in the command shell search PATH.
2789 This variable contains the full path (if any) to a previously
2790 installed perl5.005 or later suitable for running the script
2791 to determine inc_version_list.
2794 This variable is defined but not used by Configure.
2795 The value is a plain '' and is not useful.
2797 PERL_REVISION (Oldsyms.U):
2798 In a Perl version number such as 5.6.2, this is the 5.
2799 This value is manually set in patchlevel.h
2801 PERL_SUBVERSION (Oldsyms.U):
2802 In a Perl version number such as 5.6.2, this is the 2.
2803 Values greater than 50 represent potentially unstable
2804 development subversions.
2805 This value is manually set in patchlevel.h
2807 PERL_VERSION (Oldsyms.U):
2808 In a Perl version number such as 5.6.2, this is the 6.
2809 This value is manually set in patchlevel.h
2811 perladmin (perladmin.U):
2812 Electronic mail address of the perl5 administrator.
2814 perlpath (perlpath.U):
2815 This variable contains the eventual value of the PERLPATH symbol,
2816 which contains the name of the perl interpreter to be used in
2817 shell scripts and in the "eval 'exec'" idiom.
2820 This variable is used internally by Configure to determine the
2821 full pathname (if any) of the pg program. After Configure runs,
2822 the value is reset to a plain "pg" and is not useful.
2824 phostname (myhostname.U):
2825 This variable contains the eventual value of the PHOSTNAME symbol,
2826 which is a command that can be fed to popen() to get the host name.
2827 The program should probably not presume that the domain is or isn't
2830 pidtype (pidtype.U):
2831 This variable defines PIDTYPE to be something like pid_t, int,
2832 ushort, or whatever type is used to declare process ids in the kernel.
2835 Holds the private path used by Configure to find out the libraries.
2836 Its value is prepend to libpth. This variable takes care of special
2837 machines, like the mips. Usually, it should be empty.
2839 pm_apiversion (xs_apiversion.U):
2840 This variable contains the version of the oldest perl
2841 compatible with the present perl. (That is, pure perl modules
2842 written for $pm_apiversion will still work for the current
2843 version). perl.c:incpush() and lib/lib.pm will automatically
2844 search in $sitelib for older directories across major versions
2845 back to pm_apiversion. This is only useful if you have a perl
2846 library directory tree structured like the default one. The
2847 versioned site_perl library was introduced in 5.005, so that's
2848 the default setting for this variable. It's hard to imagine
2849 it changing before Perl6. It is included here for symmetry
2850 with xs_apiveprsion -- the searching algorithms will
2851 (presumably) be similar.
2852 See the INSTALL file for how this works.
2855 This variable is defined but not used by Configure.
2856 The value is a plain '' and is not useful.
2859 This variable is defined but not used by Configure.
2860 The value is a plain '' and is not useful.
2863 This variable holds the name of the directory below which the
2864 user will install the package. Usually, this is /usr/local, and
2865 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2866 man pages in /usr/local/man, etc. It is only used to set defaults
2867 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2869 prefixexp (prefix.U):
2870 This variable holds the full absolute path of the directory below
2871 which the user will install the package. Derived from prefix.
2873 privlib (privlib.U):
2874 This variable contains the eventual value of the PRIVLIB symbol,
2875 which is the name of the private library for this package. It may
2876 have a ~ on the front. It is up to the makefile to eventually create
2877 this directory while performing installation (with ~ substitution).
2879 privlibexp (privlib.U):
2880 This variable is the ~name expanded version of privlib, so that you
2881 may use it directly in Makefiles or shell scripts.
2883 prototype (prototype.U):
2884 This variable holds the eventual value of CAN_PROTOTYPE, which
2885 indicates the C compiler can handle funciton prototypes.
2887 ptrsize (ptrsize.U):
2888 This variable contains the value of the PTRSIZE symbol, which
2889 indicates to the C program how many bytes there are in a pointer.
2891 quadkind (quadtype.U):
2892 This variable, if defined, encodes the type of a quad:
2893 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2895 quadtype (quadtype.U):
2896 This variable defines Quad_t to be something like long, int,
2897 long long, int64_t, or whatever type is used for 64-bit integers.
2899 randbits (randfunc.U):
2900 Indicates how many bits are produced by the function used to
2901 generate normalized random numbers.
2903 randfunc (randfunc.U):
2904 Indicates the name of the random number function to use.
2905 Values include drand48, random, and rand. In C programs,
2906 the 'Drand01' macro is defined to generate uniformly distributed
2907 random numbers over the range [0., 1.[ (see drand01 and nrand).
2909 randseedtype (randfunc.U):
2910 Indicates the type of the argument of the seedfunc.
2912 ranlib (orderlib.U):
2913 This variable is set to the pathname of the ranlib program, if it is
2914 needed to generate random libraries. Set to ":" if ar can generate
2915 random libraries or if random libraries are not supported
2917 rd_nodata (nblock_io.U):
2918 This variable holds the return code from read() when no data is
2919 present. It should be -1, but some systems return 0 when O_NDELAY is
2920 used, which is a shame because you cannot make the difference between
2921 no data and an EOF.. Sigh!
2923 revision (patchlevel.U):
2924 The value of revision comes from the patchlevel.h file.
2925 In a version number such as 5.6.1, this is the "5".
2926 In patchlevel.h, this is referred to as "PERL_REVISION".
2929 This variable is used internally by Configure to determine the
2930 full pathname (if any) of the rm program. After Configure runs,
2931 the value is reset to a plain "rm" and is not useful.
2934 This variable is defined but not used by Configure.
2935 The value is a plain '' and is not useful.
2938 This variable contains 'true' or 'false' depending whether the
2939 nm extraction should be performed or not, according to the value
2940 of usenm and the flags on the Configure command line.
2942 sched_yield (d_pthread_y.U):
2943 This variable defines the way to yield the execution
2944 of the current thread.
2946 scriptdir (scriptdir.U):
2947 This variable holds the name of the directory in which the user wants
2948 to put publicly scripts for the package in question. It is either
2949 the same directory as for binaries, or a special one that can be
2950 mounted across different architectures, like /usr/share. Programs
2951 must be prepared to deal with ~name expansion.
2953 scriptdirexp (scriptdir.U):
2954 This variable is the same as scriptdir, but is filename expanded
2955 at configuration time, for programs not wanting to bother with it.
2958 This variable is used internally by Configure to determine the
2959 full pathname (if any) of the sed program. After Configure runs,
2960 the value is reset to a plain "sed" and is not useful.
2962 seedfunc (randfunc.U):
2963 Indicates the random number generating seed function.
2964 Values include srand48, srandom, and srand.
2966 selectminbits (selectminbits.U):
2967 This variable holds the minimum number of bits operated by select.
2968 That is, if you do select(n, ...), how many bits at least will be
2969 cleared in the masks if some activity is detected. Usually this
2970 is either n or 32*ceil(n/32), especially many little-endians do
2971 the latter. This is only useful if you have select(), naturally.
2973 selecttype (selecttype.U):
2974 This variable holds the type used for the 2nd, 3rd, and 4th
2975 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
2976 is defined, and 'int *' otherwise. This is only useful if you
2977 have select(), naturally.
2980 This variable is defined but not used by Configure.
2981 The value is a plain '' and is not useful.
2984 This variable contains the full pathname of the shell used
2985 on this system to execute Bourne shell scripts. Usually, this will be
2986 /bin/sh, though it's possible that some systems will have /bin/ksh,
2987 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
2989 This unit comes before Options.U, so you can't set sh with a '-D'
2990 option, though you can override this (and startsh)
2991 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
2994 This variable is defined but not used by Configure.
2995 The value is a plain '' and is not useful.
2997 sharpbang (spitshell.U):
2998 This variable contains the string #! if this system supports that
3001 shmattype (d_shmat.U):
3002 This symbol contains the type of pointer returned by shmat().
3003 It can be 'void *' or 'char *'.
3005 shortsize (intsize.U):
3006 This variable contains the value of the SHORTSIZE symbol which
3007 indicates to the C program how many bytes there are in a short.
3009 shrpenv (libperl.U):
3010 If the user builds a shared libperl.so, then we need to tell the
3011 'perl' executable where it will be able to find the installed libperl.so.
3012 One way to do this on some systems is to set the environment variable
3013 LD_RUN_PATH to the directory that will be the final location of the
3014 shared libperl.so. The makefile can use this with something like
3015 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3017 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3020 See the main perl Makefile.SH for actual working usage.
3021 Alternatively, we might be able to use a command line option such
3022 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3023 $archlibexp/CORE (Linux).
3025 shsharp (spitshell.U):
3026 This variable tells further Configure units whether your sh can
3029 sig_count (sig_name.U):
3030 This variable holds a number larger than the largest valid
3031 signal number. This is usually the same as the NSIG macro.
3033 sig_name (sig_name.U):
3034 This variable holds the signal names, space separated. The leading
3035 SIG in signal name is removed. A ZERO is prepended to the
3036 list. This is currently not used.
3038 sig_name_init (sig_name.U):
3039 This variable holds the signal names, enclosed in double quotes and
3040 separated by commas, suitable for use in the SIG_NAME definition
3041 below. A "ZERO" is prepended to the list, and the list is
3042 terminated with a plain 0. The leading SIG in signal names
3043 is removed. See sig_num.
3045 sig_num (sig_name.U):
3046 This variable holds the signal numbers, space separated. A ZERO is
3047 prepended to the list (corresponding to the fake SIGZERO), and
3048 the list is terminated with a 0. Those numbers correspond to
3049 the value of the signal listed in the same place within the
3052 sig_num_init (sig_name.U):
3053 This variable holds the signal numbers, enclosed in double quotes and
3054 separated by commas, suitable for use in the SIG_NUM definition
3055 below. A "ZERO" is prepended to the list, and the list is
3056 terminated with a plain 0.
3058 signal_t (d_voidsig.U):
3059 This variable holds the type of the signal handler (void or int).
3061 sitearch (sitearch.U):
3062 This variable contains the eventual value of the SITEARCH symbol,
3063 which is the name of the private library for this package. It may
3064 have a ~ on the front. It is up to the makefile to eventually create
3065 this directory while performing installation (with ~ substitution).
3066 The standard distribution will put nothing in this directory.
3067 After perl has been installed, users may install their own local
3068 architecture-dependent modules in this directory with
3069 MakeMaker Makefile.PL
3070 or equivalent. See INSTALL for details.
3072 sitearchexp (sitearch.U):
3073 This variable is the ~name expanded version of sitearch, so that you
3074 may use it directly in Makefiles or shell scripts.
3076 sitebin (sitebin.U):
3077 This variable holds the name of the directory in which the user wants
3078 to put add-on publicly executable files for the package in question. It
3079 is most often a local directory such as /usr/local/bin. Programs using
3080 this variable must be prepared to deal with ~name substitution.
3081 The standard distribution will put nothing in this directory.
3082 After perl has been installed, users may install their own local
3083 executables in this directory with
3084 MakeMaker Makefile.PL
3085 or equivalent. See INSTALL for details.
3087 sitebinexp (sitebin.U):
3088 This is the same as the sitebin variable, but is filename expanded at
3089 configuration time, for use in your makefiles.
3091 sitelib (sitelib.U):
3092 This variable contains the eventual value of the SITELIB symbol,
3093 which is the name of the private library for this package. It may
3094 have a ~ on the front. It is up to the makefile to eventually create
3095 this directory while performing installation (with ~ substitution).
3096 The standard distribution will put nothing in this directory.
3097 After perl has been installed, users may install their own local
3098 architecture-independent modules in this directory with
3099 MakeMaker Makefile.PL
3100 or equivalent. See INSTALL for details.
3102 sitelib_stem (sitelib.U):
3103 This variable is $sitelibexp with any trailing version-specific component
3104 removed. The elements in inc_version_list (inc_version_list.U) can
3105 be tacked onto this variable to generate a list of directories to search.
3107 sitelibexp (sitelib.U):
3108 This variable is the ~name expanded version of sitelib, so that you
3109 may use it directly in Makefiles or shell scripts.
3111 siteprefix (siteprefix.U):
3112 This variable holds the full absolute path of the directory below
3113 which the user will install add-on packages.
3114 See INSTALL for usage and examples.
3116 siteprefixexp (siteprefix.U):
3117 This variable holds the full absolute path of the directory below
3118 which the user will install add-on packages. Derived from siteprefix.
3120 sizesize (sizesize.U):
3121 This variable contains the size of a sizetype in bytes.
3123 sizetype (sizetype.U):
3124 This variable defines sizetype to be something like size_t,
3125 unsigned long, or whatever type is used to declare length
3126 parameters for string functions.
3129 This variable is defined but not used by Configure.
3130 The value is a plain '' and is not useful.
3133 This variable is defined but not used by Configure.
3134 The value is a plain '' and is not useful.
3137 This variable contains a flag which will tell the C compiler and loader
3138 to produce a program running with a small memory model. It is up to
3139 the Makefile to use this.
3142 This variable holds the extension used to identify shared libraries
3143 (also known as shared objects) on the system. Usually set to 'so'.
3145 sockethdr (d_socket.U):
3146 This variable has any cpp '-I' flags needed for socket support.
3148 socketlib (d_socket.U):
3149 This variable has the names of any libraries needed for socket support.
3151 socksizetype (socksizetype.U):
3152 This variable holds the type used for the size argument
3153 for various socket calls like accept. Usual values include
3154 socklen_t, size_t, and int.
3157 This variable is used internally by Configure to determine the
3158 full pathname (if any) of the sort program. After Configure runs,
3159 the value is reset to a plain "sort" and is not useful.
3161 spackage (package.U):
3162 This variable contains the name of the package being constructed,
3163 with the first letter uppercased, i.e. suitable for starting
3166 spitshell (spitshell.U):
3167 This variable contains the command necessary to spit out a runnable
3168 shell on this system. It is either cat or a grep '-v' for # comments.
3171 This variable contains a flag which will tell the C compiler and loader
3172 to produce a program that will run in separate I and D space, for those
3173 machines that support separation of instruction and data space. It is
3174 up to the Makefile to use this.
3176 sPRId64 (quadfio.U):
3177 This variable, if defined, contains the string used by stdio to
3178 format 64-bit decimal numbers (format 'd') for output.
3180 sPRIeldbl (longdblfio.U):
3181 This variable, if defined, contains the string used by stdio to
3182 format long doubles (format 'e') for output.
3184 sPRIEldbl (longdblfio.U):
3185 This variable, if defined, contains the string used by stdio to
3186 format long doubles (format 'E') for output.
3188 sPRIfldbl (longdblfio.U):
3189 This variable, if defined, contains the string used by stdio to
3190 format long doubles (format 'f') for output.
3192 sPRIFldbl (longdblfio.U):
3193 This variable, if defined, contains the string used by stdio to
3194 format long doubles (format 'F') for output.
3196 sPRIgldbl (longdblfio.U):
3197 This variable, if defined, contains the string used by stdio to
3198 format long doubles (format 'g') for output.
3200 sPRIGldbl (longdblfio.U):
3201 This variable, if defined, contains the string used by stdio to
3202 format long doubles (format 'G') for output.
3204 sPRIi64 (quadfio.U):
3205 This variable, if defined, contains the string used by stdio to
3206 format 64-bit decimal numbers (format 'i') for output.
3208 sPRIo64 (quadfio.U):
3209 This variable, if defined, contains the string used by stdio to
3210 format 64-bit octal numbers (format 'o') for output.
3212 sPRIu64 (quadfio.U):
3213 This variable, if defined, contains the string used by stdio to
3214 format 64-bit unsigned decimal numbers (format 'u') for output.
3216 sPRIx64 (quadfio.U):
3217 This variable, if defined, contains the string used by stdio to
3218 format 64-bit hexadecimal numbers (format 'x') for output.
3220 sPRIX64 (quadfio.U):
3221 This variable, if defined, contains the string used by stdio to
3222 format 64-bit hExADECimAl numbers (format 'X') for output.
3225 This variable holds the path to the package source. It is up to
3226 the Makefile to use this variable and set VPATH accordingly to
3227 find the sources remotely.
3229 ssizetype (ssizetype.U):
3230 This variable defines ssizetype to be something like ssize_t,
3231 long or int. It is used by functions that return a count
3232 of bytes or an error condition. It must be a signed type.
3233 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3235 startperl (startperl.U):
3236 This variable contains the string to put on the front of a perl
3237 script to make sure (hopefully) that it runs with perl and not some
3238 shell. Of course, that leading line must be followed by the classical
3240 eval 'exec perl -S $0 ${1+"$@"}'
3241 if $running_under_some_shell;
3242 to guarantee perl startup should the shell execute the script. Note
3243 that this magic incatation is not understood by csh.
3245 startsh (startsh.U):
3246 This variable contains the string to put on the front of a shell
3247 script to make sure (hopefully) that it runs with sh and not some
3250 static_ext (Extensions.U):
3251 This variable holds a list of XS extension files we want to
3252 link statically into the package. It is used by Makefile.
3254 stdchar (stdchar.U):
3255 This variable conditionally defines STDCHAR to be the type of char
3256 used in stdio.h. It has the values "unsigned char" or "char".
3258 stdio_base (d_stdstdio.U):
3259 This variable defines how, given a FILE pointer, fp, to access the
3260 _base field (or equivalent) of stdio.h's FILE structure. This will
3261 be used to define the macro FILE_base(fp).
3263 stdio_bufsiz (d_stdstdio.U):
3264 This variable defines how, given a FILE pointer, fp, to determine
3265 the number of bytes store in the I/O buffer pointer to by the
3266 _base field (or equivalent) of stdio.h's FILE structure. This will
3267 be used to define the macro FILE_bufsiz(fp).
3269 stdio_cnt (d_stdstdio.U):
3270 This variable defines how, given a FILE pointer, fp, to access the
3271 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3272 be used to define the macro FILE_cnt(fp).
3274 stdio_filbuf (d_stdstdio.U):
3275 This variable defines how, given a FILE pointer, fp, to tell
3276 stdio to refill it's internal buffers (?). This will
3277 be used to define the macro FILE_filbuf(fp).
3279 stdio_ptr (d_stdstdio.U):
3280 This variable defines how, given a FILE pointer, fp, to access the
3281 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3282 be used to define the macro FILE_ptr(fp).
3284 stdio_stream_array (stdio_streams.U):
3285 This variable tells the name of the array holding the stdio streams.
3286 Usual values include _iob, __iob, and __sF.
3288 strings (i_string.U):
3289 This variable holds the full path of the string header that will be
3290 used. Typically /usr/include/string.h or /usr/include/strings.h.
3293 This variable is defined but not used by Configure.
3294 The value is a plain '' and is not useful.
3296 subversion (patchlevel.U):
3297 The subversion level of this package.
3298 The value of subversion comes from the patchlevel.h file.
3299 In a version number such as 5.6.1, this is the "1".
3300 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3301 This is unique to perl.
3304 This variable holds the place where the manual is located on this
3305 system. It is not the place where the user wants to put his manual
3306 pages. Rather it is the place where Configure may look to find manual
3307 for unix commands (section 1 of the manual usually). See mansrc.
3310 This variable is defined but not used by Configure.
3311 The value is a plain '' and is not useful.
3314 This variable is defined but not used by Configure.
3315 The value is a plain '' and is not useful.
3318 This variable is defined but not used by Configure.
3319 The value is a plain '' and is not useful.
3322 This variable is defined but not used by Configure.
3323 The value is a plain '' and is not useful.
3326 This variable is used internally by Configure to determine the
3327 full pathname (if any) of the test program. After Configure runs,
3328 the value is reset to a plain "test" and is not useful.
3330 timeincl (i_time.U):
3331 This variable holds the full path of the included time header(s).
3333 timetype (d_time.U):
3334 This variable holds the type returned by time(). It can be long,
3335 or time_t on BSD sites (in which case <sys/types.h> should be
3336 included). Anyway, the type Time_t should be used.
3339 This variable is used internally by Configure to determine the
3340 full pathname (if any) of the touch program. After Configure runs,
3341 the value is reset to a plain "touch" and is not useful.
3344 This variable is used internally by Configure to determine the
3345 full pathname (if any) of the tr program. After Configure runs,
3346 the value is reset to a plain "tr" and is not useful.
3349 This variable contains the value to be passed to the tr(1)
3350 command to transliterate a newline. Typical values are
3351 '\012' and '\n'. This is needed for EBCDIC systems where
3352 newline is not necessarily '\012'.
3355 This variable is defined but not used by Configure.
3356 The value is a plain '' and is not useful.
3359 This variable is the size of an U16 in bytes.
3362 This variable contains the C type used for Perl's U16.
3365 This variable is the size of an U32 in bytes.
3368 This variable contains the C type used for Perl's U32.
3371 This variable is the size of an U64 in bytes.
3374 This variable contains the C type used for Perl's U64.
3377 This variable is the size of an U8 in bytes.
3380 This variable contains the C type used for Perl's U8.
3383 This variable contains the format string used for printing a Uid_t.
3385 uidsign (uidsign.U):
3386 This variable contains the signedness of a uidtype.
3387 1 for unsigned, -1 for signed.
3389 uidsize (uidsize.U):
3390 This variable contains the size of a uidtype in bytes.
3392 uidtype (uidtype.U):
3393 This variable defines Uid_t to be something like uid_t, int,
3394 ushort, or whatever type is used to declare user ids in the kernel.
3397 This variable is used internally by Configure to determine the
3398 full pathname (if any) of the uname program. After Configure runs,
3399 the value is reset to a plain "uname" and is not useful.
3402 This variable is used internally by Configure to determine the
3403 full pathname (if any) of the uniq program. After Configure runs,
3404 the value is reset to a plain "uniq" and is not useful.
3406 uquadtype (quadtype.U):
3407 This variable defines Uquad_t to be something like unsigned long,
3408 unsigned int, unsigned long long, uint64_t, or whatever type is
3409 used for 64-bit integers.
3411 use5005threads (usethreads.U):
3412 This variable conditionally defines the USE_5005THREADS symbol,
3413 and indicates that Perl should be built to use the 5.005-based
3414 threading implementation.
3416 use64bitall (use64bits.U):
3417 This variable conditionally defines the USE_64_BIT_ALL symbol,
3418 and indicates that 64-bit integer types should be used
3419 when available. The maximal possible
3420 64-bitness is employed: LP64 or ILP64, meaning that you will
3421 be able to use more than 2 gigabytes of memory. This mode is
3422 even more binary incompatible than USE_64_BIT_INT. You may not
3423 be able to run the resulting executable in a 32-bit CPU at all or
3424 you may need at least to reboot your OS to 64-bit mode.
3426 use64bitint (use64bits.U):
3427 This variable conditionally defines the USE_64_BIT_INT symbol,
3428 and indicates that 64-bit integer types should be used
3429 when available. The minimal possible 64-bitness
3430 is employed, just enough to get 64-bit integers into Perl.
3431 This may mean using for example "long longs", while your memory
3432 may still be limited to 2 gigabytes.
3435 This variable indicates if the system supports dynamic
3436 loading of some sort. See also dlsrc and dlobj.
3438 useithreads (usethreads.U):
3439 This variable conditionally defines the USE_ITHREADS symbol,
3440 and indicates that Perl should be built to use the interpreter-based
3441 threading implementation.
3443 uselargefiles (uselfs.U):
3444 This variable conditionally defines the USE_LARGE_FILES symbol,
3445 and indicates that large file interfaces should be used when
3448 uselongdouble (uselongdbl.U):
3449 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3450 and indicates that long doubles should be used when available.
3452 usemorebits (usemorebits.U):
3453 This variable conditionally defines the USE_MORE_BITS symbol,
3454 and indicates that explicit 64-bit interfaces and long doubles
3455 should be used when available.
3457 usemultiplicity (usemultiplicity.U):
3458 This variable conditionally defines the MULTIPLICITY symbol,
3459 and indicates that Perl should be built to use multiplicity.
3461 usemymalloc (mallocsrc.U):
3462 This variable contains y if the malloc that comes with this package
3463 is desired over the system's version of malloc. People often include
3464 special versions of malloc for effiency, but such versions are often
3465 less portable. See also mallocsrc and mallocobj.
3466 If this is 'y', then -lmalloc is removed from $libs.
3469 This variable contains 'true' or 'false' depending whether the
3470 nm extraction is wanted or not.
3472 useopcode (Extensions.U):
3473 This variable holds either 'true' or 'false' to indicate
3474 whether the Opcode extension should be used. The sole
3475 use for this currently is to allow an easy mechanism
3476 for users to skip the Opcode extension from the Configure
3479 useperlio (useperlio.U):
3480 This variable conditionally defines the USE_PERLIO symbol,
3481 and indicates that the PerlIO abstraction should be
3484 useposix (Extensions.U):
3485 This variable holds either 'true' or 'false' to indicate
3486 whether the POSIX extension should be used. The sole
3487 use for this currently is to allow an easy mechanism
3488 for hints files to indicate that POSIX will not compile
3489 on a particular system.
3492 This variable is set to true when the user agrees to use sfio.
3493 It is set to false when sfio is not available or when the user
3494 explicitely requests not to use sfio. It is here primarily so
3495 that command-line settings can override the auto-detection of
3496 d_sfio without running into a "WHOA THERE".
3498 useshrplib (libperl.U):
3499 This variable is set to 'yes' if the user wishes
3500 to build a shared libperl, and 'no' otherwise.
3502 usesocks (usesocks.U):
3503 This variable conditionally defines the USE_SOCKS symbol,
3504 and indicates that Perl should be built to use SOCKS.
3506 usethreads (usethreads.U):
3507 This variable conditionally defines the USE_THREADS symbol,
3508 and indicates that Perl should be built to use threads.
3510 usevendorprefix (vendorprefix.U):
3511 This variable tells whether the vendorprefix
3512 and consequently other vendor* paths are in use.
3514 usevfork (d_vfork.U):
3515 This variable is set to true when the user accepts to use vfork.
3516 It is set to false when no vfork is available or when the user
3517 explicitely requests not to use vfork.
3520 This variable holds the path of the include files, which is
3521 usually /usr/include. It is mainly used by other Configure units.
3524 This variable is defined but not used by Configure.
3525 The value is a plain '' and is not useful.
3527 uvoformat (perlxvf.U):
3528 This variable contains the format string used for printing
3529 a Perl UV as an unsigned octal integer.
3532 This variable is the size of a UV in bytes.
3535 This variable contains the C type used for Perl's UV.
3537 uvuformat (perlxvf.U):
3538 This variable contains the format string used for printing
3539 a Perl UV as an unsigned decimal integer.
3541 uvxformat (perlxvf.U):
3542 This variable contains the format string used for printing
3543 a Perl UV as an unsigned hexadecimal integer.
3545 vendorarch (vendorarch.U):
3546 This variable contains the value of the PERL_VENDORARCH symbol.
3547 It may have a ~ on the front.
3548 The standard distribution will put nothing in this directory.
3549 Vendors who distribute perl may wish to place their own
3550 architecture-dependent modules and extensions in this directory with
3551 MakeMaker Makefile.PL INSTALLDIRS=vendor
3552 or equivalent. See INSTALL for details.
3554 vendorarchexp (vendorarch.U):
3555 This variable is the ~name expanded version of vendorarch, so that you
3556 may use it directly in Makefiles or shell scripts.
3558 vendorbin (vendorbin.U):
3559 This variable contains the eventual value of the VENDORBIN symbol.
3560 It may have a ~ on the front.
3561 The standard distribution will put nothing in this directory.
3562 Vendors who distribute perl may wish to place additional
3563 binaries in this directory with
3564 MakeMaker Makefile.PL INSTALLDIRS=vendor
3565 or equivalent. See INSTALL for details.
3567 vendorbinexp (vendorbin.U):
3568 This variable is the ~name expanded version of vendorbin, so that you
3569 may use it directly in Makefiles or shell scripts.
3571 vendorlib (vendorlib.U):
3572 This variable contains the eventual value of the VENDORLIB symbol,
3573 which is the name of the private library for this package.
3574 The standard distribution will put nothing in this directory.
3575 Vendors who distribute perl may wish to place their own
3576 modules in this directory with
3577 MakeMaker Makefile.PL INSTALLDIRS=vendor
3578 or equivalent. See INSTALL for details.
3580 vendorlib_stem (vendorlib.U):
3581 This variable is $vendorlibexp with any trailing version-specific component
3582 removed. The elements in inc_version_list (inc_version_list.U) can
3583 be tacked onto this variable to generate a list of directories to search.
3585 vendorlibexp (vendorlib.U):
3586 This variable is the ~name expanded version of vendorlib, so that you
3587 may use it directly in Makefiles or shell scripts.
3589 vendorprefix (vendorprefix.U):
3590 This variable holds the full absolute path of the directory below
3591 which the vendor will install add-on packages.
3592 See INSTALL for usage and examples.
3594 vendorprefixexp (vendorprefix.U):
3595 This variable holds the full absolute path of the directory below
3596 which the vendor will install add-on packages. Derived from vendorprefix.
3598 version (patchlevel.U):
3599 The full version number of this package, such as 5.6.1 (or 5_6_1).
3600 This combines revision, patchlevel, and subversion to get the
3601 full version number, including any possible subversions.
3602 This is suitable for use as a directory name, and hence is
3603 filesystem dependent.
3606 This variable is defined but not used by Configure.
3607 The value is a plain '' and is not useful.
3609 voidflags (voidflags.U):
3610 This variable contains the eventual value of the VOIDFLAGS symbol,
3611 which indicates how much support of the void type is given by this
3612 compiler. See VOIDFLAGS for more info.
3615 This variable holds extra path (space-separated) used to find
3616 libraries on this platform, for example CPU-specific libraries
3617 (on multi-CPU platforms) may be listed here.
3619 xs_apiversion (xs_apiversion.U):
3620 This variable contains the version of the oldest perl binary
3621 compatible with the present perl. perl.c:incpush() and
3622 lib/lib.pm will automatically search in $sitearch for older
3623 directories across major versions back to xs_apiversion.
3624 This is only useful if you have a perl library directory tree
3625 structured like the default one.
3626 See INSTALL for how this works.
3627 The versioned site_perl directory was introduced in 5.005,
3628 so that is the lowest possible value.
3629 Since this can depend on compile time options (such as
3630 bincompat) it is set by Configure. Other non-default sources
3631 of potential incompatibility, such as multiplicity, threads,
3632 debugging, 64bits, sfio, etc., are not checked for currently,
3633 though in principle we could go snooping around in old
3637 This variable is defined but not used by Configure.
3638 The value is a plain '' and is not useful.
3641 This variable is used internally by Configure to determine the
3642 full pathname (if any) of the zip program. After Configure runs,
3643 the value is reset to a plain "zip" and is not useful.