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_preserved_bits (perlxv.U):
1011 This variable indicates how many of bits type uvtype
1012 a variable nvtype can preserve.
1014 d_nv_preserves_uv (perlxv.U):
1015 This variable indicates whether a variable of type nvtype
1016 can preserve all the bits a variable of type uvtype.
1018 d_off64_t (d_off64_t.U):
1019 This symbol will be defined if the C compiler supports off64_t.
1021 d_old_pthread_create_joinable (d_pthrattrj.U):
1022 This variable conditionally defines pthread_create_joinable.
1023 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1025 d_oldpthreads (usethreads.U):
1026 This variable conditionally defines the OLD_PTHREADS_API symbol,
1027 and indicates that Perl should be built to use the old
1028 draft POSIX threads API. This is only potentially meaningful if
1031 d_oldsock (d_socket.U):
1032 This variable conditionally defines the OLDSOCKET symbol, which
1033 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1035 d_open3 (d_open3.U):
1036 This variable conditionally defines the HAS_OPEN3 manifest constant,
1037 which indicates to the C program that the 3 argument version of
1038 the open(2) function is available.
1040 d_pathconf (d_pathconf.U):
1041 This variable conditionally defines the HAS_PATHCONF symbol, which
1042 indicates to the C program that the pathconf() routine is available
1043 to determine file-system related limits and options associated
1044 with a given filename.
1046 d_pause (d_pause.U):
1047 This variable conditionally defines the HAS_PAUSE symbol, which
1048 indicates to the C program that the pause() routine is available
1049 to suspend a process until a signal is received.
1051 d_perl_otherlibdirs (otherlibdirs.U):
1052 This variable conditionally defines PERL_OTHERLIBDIRS, which
1053 contains a colon-separated set of paths for the perl binary to
1054 include in @INC. See also otherlibdirs.
1056 d_phostname (d_gethname.U):
1057 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1058 contains the shell command which, when fed to popen(), may be
1059 used to derive the host name.
1062 This variable conditionally defines the HAS_PIPE symbol, which
1063 indicates to the C program that the pipe() routine is available
1064 to create an inter-process channel.
1067 This variable conditionally defines the HAS_POLL symbol, which
1068 indicates to the C program that the poll() routine is available
1069 to poll active file descriptors.
1071 d_portable (d_portable.U):
1072 This variable conditionally defines the PORTABLE symbol, which
1073 indicates to the C program that it should not assume that it is
1074 running on the machine it was compiled on.
1076 d_PRId64 (quadfio.U):
1077 This variable conditionally defines the PERL_PRId64 symbol, which
1078 indiciates that stdio has a symbol to print 64-bit decimal numbers.
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_PRIEldbl (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_PRIFldbl (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_PRIGldbl (longdblfio.U):
1101 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1102 indiciates that stdio has a symbol to print long doubles.
1104 d_PRIi64 (quadfio.U):
1105 This variable conditionally defines the PERL_PRIi64 symbol, which
1106 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1108 d_PRIo64 (quadfio.U):
1109 This variable conditionally defines the PERL_PRIo64 symbol, which
1110 indiciates that stdio has a symbol to print 64-bit octal numbers.
1112 d_PRIu64 (quadfio.U):
1113 This variable conditionally defines the PERL_PRIu64 symbol, which
1114 indiciates that stdio has a symbol to print 64-bit unsigned decimal
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_PRIX64 (quadfio.U):
1122 This variable conditionally defines the PERL_PRIX64 symbol, which
1123 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1125 d_pthread_yield (d_pthread_y.U):
1126 This variable conditionally defines the HAS_PTHREAD_YIELD
1127 symbol if the pthread_yield routine is available to yield
1128 the execution of the current thread.
1131 This variable conditionally defines PWAGE, which indicates
1132 that struct passwd contains pw_age.
1134 d_pwchange (i_pwd.U):
1135 This variable conditionally defines PWCHANGE, which indicates
1136 that struct passwd contains pw_change.
1138 d_pwclass (i_pwd.U):
1139 This variable conditionally defines PWCLASS, which indicates
1140 that struct passwd contains pw_class.
1142 d_pwcomment (i_pwd.U):
1143 This variable conditionally defines PWCOMMENT, which indicates
1144 that struct passwd contains pw_comment.
1146 d_pwexpire (i_pwd.U):
1147 This variable conditionally defines PWEXPIRE, which indicates
1148 that struct passwd contains pw_expire.
1150 d_pwgecos (i_pwd.U):
1151 This variable conditionally defines PWGECOS, which indicates
1152 that struct passwd contains pw_gecos.
1154 d_pwpasswd (i_pwd.U):
1155 This variable conditionally defines PWPASSWD, which indicates
1156 that struct passwd contains pw_passwd.
1158 d_pwquota (i_pwd.U):
1159 This variable conditionally defines PWQUOTA, which indicates
1160 that struct passwd contains pw_quota.
1162 d_qgcvt (d_qgcvt.U):
1163 This variable conditionally defines the HAS_QGCVT symbol, which
1164 indicates to the C program that the qgcvt() routine is available.
1166 d_quad (quadtype.U):
1167 This variable, if defined, tells that there's a 64-bit integer type,
1170 d_readdir (d_readdir.U):
1171 This variable conditionally defines HAS_READDIR if readdir() is
1172 available to read directory entries.
1174 d_readlink (d_readlink.U):
1175 This variable conditionally defines the HAS_READLINK symbol, which
1176 indicates to the C program that the readlink() routine is available
1177 to read the value of a symbolic link.
1179 d_rename (d_rename.U):
1180 This variable conditionally defines the HAS_RENAME symbol, which
1181 indicates to the C program that the rename() routine is available
1184 d_rewinddir (d_readdir.U):
1185 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1188 d_rmdir (d_rmdir.U):
1189 This variable conditionally defines HAS_RMDIR if rmdir() is
1190 available to remove directories.
1192 d_safebcpy (d_safebcpy.U):
1193 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1194 the bcopy() routine can do overlapping copies.
1196 d_safemcpy (d_safemcpy.U):
1197 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1198 the memcpy() routine can do overlapping copies.
1200 d_sanemcmp (d_sanemcmp.U):
1201 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1202 the memcpy() routine is available and can be used to compare relative
1203 magnitudes of chars with their high bits set.
1205 d_sched_yield (d_pthread_y.U):
1206 This variable conditionally defines the HAS_SCHED_YIELD
1207 symbol if the sched_yield routine is available to yield
1208 the execution of the current thread.
1210 d_scm_rights (d_socket.U):
1211 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1212 which indicates that the SCM_RIGHTS is available. #ifdef is
1213 not enough because it may be an enum, glibc has been known to do this.
1215 d_seekdir (d_readdir.U):
1216 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1219 d_select (d_select.U):
1220 This variable conditionally defines HAS_SELECT if select() is
1221 available to select active file descriptors. A <sys/time.h>
1222 inclusion may be necessary for the timeout field.
1225 This variable conditionally defines the HAS_SEM symbol, which
1226 indicates that the entire sem*(2) library is present.
1228 d_semctl (d_semctl.U):
1229 This variable conditionally defines the HAS_SEMCTL symbol, which
1230 indicates to the C program that the semctl() routine is available.
1232 d_semctl_semid_ds (d_union_semun.U):
1233 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1234 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1236 d_semctl_semun (d_union_semun.U):
1237 This variable conditionally defines USE_SEMCTL_SEMUN, which
1238 indicates that union semun is to be used for semctl IPC_STAT.
1240 d_semget (d_semget.U):
1241 This variable conditionally defines the HAS_SEMGET symbol, which
1242 indicates to the C program that the semget() routine is available.
1244 d_semop (d_semop.U):
1245 This variable conditionally defines the HAS_SEMOP symbol, which
1246 indicates to the C program that the semop() routine is available.
1248 d_setegid (d_setegid.U):
1249 This variable conditionally defines the HAS_SETEGID symbol, which
1250 indicates to the C program that the setegid() routine is available
1251 to change the effective gid of the current program.
1253 d_seteuid (d_seteuid.U):
1254 This variable conditionally defines the HAS_SETEUID symbol, which
1255 indicates to the C program that the seteuid() routine is available
1256 to change the effective uid of the current program.
1258 d_setgrent (d_setgrent.U):
1259 This variable conditionally defines the HAS_SETGRENT symbol, which
1260 indicates to the C program that the setgrent() routine is available
1261 for initializing sequential access to the group database.
1263 d_setgrps (d_setgrps.U):
1264 This variable conditionally defines the HAS_SETGROUPS symbol, which
1265 indicates to the C program that the setgroups() routine is available
1266 to set the list of process groups.
1268 d_sethent (d_sethent.U):
1269 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1272 d_setlinebuf (d_setlnbuf.U):
1273 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1274 indicates to the C program that the setlinebuf() routine is available
1275 to change stderr or stdout from block-buffered or unbuffered to a
1278 d_setlocale (d_setlocale.U):
1279 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1280 available to handle locale-specific ctype implementations.
1282 d_setnent (d_setnent.U):
1283 This variable conditionally defines HAS_SETNETENT if setnetent() is
1286 d_setpent (d_setpent.U):
1287 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1290 d_setpgid (d_setpgid.U):
1291 This variable conditionally defines the HAS_SETPGID symbol if the
1292 setpgid(pid, gpid) function is available to set process group ID.
1294 d_setpgrp2 (d_setpgrp2.U):
1295 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1296 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1297 is available to set the current process group.
1299 d_setpgrp (d_setpgrp.U):
1300 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1301 available to set the current process group.
1303 d_setprior (d_setprior.U):
1304 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1305 is available to set a process's priority.
1307 d_setpwent (d_setpwent.U):
1308 This variable conditionally defines the HAS_SETPWENT symbol, which
1309 indicates to the C program that the setpwent() routine is available
1310 for initializing sequential access to the passwd database.
1312 d_setregid (d_setregid.U):
1313 This variable conditionally defines HAS_SETREGID if setregid() is
1314 available to change the real and effective gid of the current
1317 d_setresgid (d_setregid.U):
1318 This variable conditionally defines HAS_SETRESGID if setresgid() is
1319 available to change the real, effective and saved gid of the current
1322 d_setresuid (d_setreuid.U):
1323 This variable conditionally defines HAS_SETREUID if setresuid() is
1324 available to change the real, effective and saved uid of the current
1327 d_setreuid (d_setreuid.U):
1328 This variable conditionally defines HAS_SETREUID if setreuid() is
1329 available to change the real and effective uid of the current
1332 d_setrgid (d_setrgid.U):
1333 This variable conditionally defines the HAS_SETRGID symbol, which
1334 indicates to the C program that the setrgid() routine is available
1335 to change the real gid of the current program.
1337 d_setruid (d_setruid.U):
1338 This variable conditionally defines the HAS_SETRUID symbol, which
1339 indicates to the C program that the setruid() routine is available
1340 to change the real uid of the current program.
1342 d_setsent (d_setsent.U):
1343 This variable conditionally defines HAS_SETSERVENT if setservent() is
1346 d_setsid (d_setsid.U):
1347 This variable conditionally defines HAS_SETSID if setsid() is
1348 available to set the process group ID.
1350 d_setvbuf (d_setvbuf.U):
1351 This variable conditionally defines the HAS_SETVBUF symbol, which
1352 indicates to the C program that the setvbuf() routine is available
1353 to change buffering on an open stdio stream.
1356 This variable conditionally defines the USE_SFIO symbol,
1357 and indicates whether sfio is available (and should be used).
1360 This variable conditionally defines the HAS_SHM symbol, which
1361 indicates that the entire shm*(2) library is present.
1363 d_shmat (d_shmat.U):
1364 This variable conditionally defines the HAS_SHMAT symbol, which
1365 indicates to the C program that the shmat() routine is available.
1367 d_shmatprototype (d_shmat.U):
1368 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1369 symbol, which indicates that sys/shm.h has a prototype for
1372 d_shmctl (d_shmctl.U):
1373 This variable conditionally defines the HAS_SHMCTL symbol, which
1374 indicates to the C program that the shmctl() routine is available.
1376 d_shmdt (d_shmdt.U):
1377 This variable conditionally defines the HAS_SHMDT symbol, which
1378 indicates to the C program that the shmdt() routine is available.
1380 d_shmget (d_shmget.U):
1381 This variable conditionally defines the HAS_SHMGET symbol, which
1382 indicates to the C program that the shmget() routine is available.
1384 d_sigaction (d_sigaction.U):
1385 This variable conditionally defines the HAS_SIGACTION symbol, which
1386 indicates that the Vr4 sigaction() routine is available.
1388 d_sigsetjmp (d_sigsetjmp.U):
1389 This variable conditionally defines the HAS_SIGSETJMP symbol,
1390 which indicates that the sigsetjmp() routine is available to
1391 call setjmp() and optionally save the process's signal mask.
1393 d_socket (d_socket.U):
1394 This variable conditionally defines HAS_SOCKET, which indicates
1395 that the BSD socket interface is supported.
1397 d_socklen_t (d_socklen_t.U):
1398 This symbol will be defined if the C compiler supports socklen_t.
1400 d_sockpair (d_socket.U):
1401 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1402 indicates that the BSD socketpair() is supported.
1404 d_sqrtl (d_sqrtl.U):
1405 This variable conditionally defines the HAS_SQRTL symbol, which
1406 indicates to the C program that the sqrtl() routine is available.
1408 d_statblks (d_statblks.U):
1409 This variable conditionally defines USE_STAT_BLOCKS
1410 if this system has a stat structure declaring
1411 st_blksize and st_blocks.
1413 d_statfs_f_flags (d_statfs_f_flags.U):
1414 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1415 symbol, which indicates to struct statfs from has f_flags member.
1416 This kind of struct statfs is coming from sys/mount.h (BSD),
1417 not from sys/statfs.h (SYSV).
1419 d_statfs_s (d_statfs_s.U):
1420 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1421 which indicates that the struct statfs is supported.
1423 d_statvfs (d_statvfs.U):
1424 This variable conditionally defines the HAS_STATVFS symbol, which
1425 indicates to the C program that the statvfs() routine is available.
1427 d_stdio_cnt_lval (d_stdstdio.U):
1428 This variable conditionally defines STDIO_CNT_LVALUE if the
1429 FILE_cnt macro can be used as an lvalue.
1431 d_stdio_ptr_lval (d_stdstdio.U):
1432 This variable conditionally defines STDIO_PTR_LVALUE if the
1433 FILE_ptr macro can be used as an lvalue.
1435 d_stdio_stream_array (stdio_streams.U):
1436 This variable tells whether there is an array holding
1439 d_stdiobase (d_stdstdio.U):
1440 This variable conditionally defines USE_STDIO_BASE if this system
1441 has a FILE structure declaring a usable _base field (or equivalent)
1444 d_stdstdio (d_stdstdio.U):
1445 This variable conditionally defines USE_STDIO_PTR if this system
1446 has a FILE structure declaring usable _ptr and _cnt fields (or
1447 equivalent) in stdio.h.
1449 d_strchr (d_strchr.U):
1450 This variable conditionally defines HAS_STRCHR if strchr() and
1451 strrchr() are available for string searching.
1453 d_strcoll (d_strcoll.U):
1454 This variable conditionally defines HAS_STRCOLL if strcoll() is
1455 available to compare strings using collating information.
1457 d_strctcpy (d_strctcpy.U):
1458 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1459 indicates to the C program that this C compiler knows how to copy
1462 d_strerrm (d_strerror.U):
1463 This variable holds what Strerrr is defined as to translate an error
1464 code condition into an error message string. It could be 'strerror'
1465 or a more complex macro emulating strrror with sys_errlist[], or the
1466 "unknown" string when both strerror and sys_errlist are missing.
1468 d_strerror (d_strerror.U):
1469 This variable conditionally defines HAS_STRERROR if strerror() is
1470 available to translate error numbers to strings.
1472 d_strtod (d_strtod.U):
1473 This variable conditionally defines the HAS_STRTOD symbol, which
1474 indicates to the C program that the strtod() routine is available
1475 to provide better numeric string conversion than atof().
1477 d_strtol (d_strtol.U):
1478 This variable conditionally defines the HAS_STRTOL symbol, which
1479 indicates to the C program that the strtol() routine is available
1480 to provide better numeric string conversion than atoi() and friends.
1482 d_strtold (d_strtold.U):
1483 This variable conditionally defines the HAS_STRTOLD symbol, which
1484 indicates to the C program that the strtold() routine is available.
1486 d_strtoll (d_strtoll.U):
1487 This variable conditionally defines the HAS_STRTOLL symbol, which
1488 indicates to the C program that the strtoll() routine is available.
1490 d_strtoul (d_strtoul.U):
1491 This variable conditionally defines the HAS_STRTOUL symbol, which
1492 indicates to the C program that the strtoul() routine is available
1493 to provide conversion of strings to unsigned long.
1495 d_strtoull (d_strtoull.U):
1496 This variable conditionally defines the HAS_STRTOULL symbol, which
1497 indicates to the C program that the strtoull() routine is available.
1499 d_strtouq (d_strtouq.U):
1500 This variable conditionally defines the HAS_STRTOUQ symbol, which
1501 indicates to the C program that the strtouq() routine is available.
1503 d_strxfrm (d_strxfrm.U):
1504 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1505 available to transform strings.
1507 d_suidsafe (d_dosuid.U):
1508 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1509 if setuid scripts can be secure. This test looks in /dev/fd/.
1511 d_symlink (d_symlink.U):
1512 This variable conditionally defines the HAS_SYMLINK symbol, which
1513 indicates to the C program that the symlink() routine is available
1514 to create symbolic links.
1516 d_syscall (d_syscall.U):
1517 This variable conditionally defines HAS_SYSCALL if syscall() is
1518 available call arbitrary system calls.
1520 d_sysconf (d_sysconf.U):
1521 This variable conditionally defines the HAS_SYSCONF symbol, which
1522 indicates to the C program that the sysconf() routine is available
1523 to determine system related limits and options.
1525 d_sysernlst (d_strerror.U):
1526 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1527 is available to translate error numbers to the symbolic name.
1529 d_syserrlst (d_strerror.U):
1530 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1531 available to translate error numbers to strings.
1533 d_system (d_system.U):
1534 This variable conditionally defines HAS_SYSTEM if system() is
1535 available to issue a shell command.
1537 d_tcgetpgrp (d_tcgtpgrp.U):
1538 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1539 indicates to the C program that the tcgetpgrp() routine is available.
1540 to get foreground process group ID.
1542 d_tcsetpgrp (d_tcstpgrp.U):
1543 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1544 indicates to the C program that the tcsetpgrp() routine is available
1545 to set foreground process group ID.
1547 d_telldir (d_readdir.U):
1548 This variable conditionally defines HAS_TELLDIR if telldir() is
1551 d_telldirproto (d_telldirproto.U):
1552 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1553 which indicates to the C program that the system provides
1554 a prototype for the telldir() function. Otherwise, it is
1555 up to the program to supply one.
1558 This variable conditionally defines the HAS_TIME symbol, which indicates
1559 that the time() routine exists. The time() routine is normaly
1560 provided on UNIX systems.
1562 d_times (d_times.U):
1563 This variable conditionally defines the HAS_TIMES symbol, which indicates
1564 that the times() routine exists. The times() routine is normaly
1565 provided on UNIX systems. You may have to include <sys/times.h>.
1567 d_truncate (d_truncate.U):
1568 This variable conditionally defines HAS_TRUNCATE if truncate() is
1569 available to truncate files.
1571 d_tzname (d_tzname.U):
1572 This variable conditionally defines HAS_TZNAME if tzname[] is
1573 available to access timezone names.
1575 d_umask (d_umask.U):
1576 This variable conditionally defines the HAS_UMASK symbol, which
1577 indicates to the C program that the umask() routine is available.
1578 to set and get the value of the file creation mask.
1580 d_uname (d_gethname.U):
1581 This variable conditionally defines the HAS_UNAME symbol, which
1582 indicates to the C program that the uname() routine may be
1583 used to derive the host name.
1585 d_union_semun (d_union_semun.U):
1586 This variable conditionally defines HAS_UNION_SEMUN if the
1587 union semun is defined by including <sys/sem.h>.
1589 d_ustat (d_ustat.U):
1590 This variable conditionally defines HAS_USTAT if ustat() is
1591 available to query file system statistics by dev_t.
1593 d_vendorarch (vendorarch.U):
1594 This variable conditionally defined PERL_VENDORARCH.
1596 d_vendorbin (vendorbin.U):
1597 This variable conditionally defines PERL_VENDORBIN.
1599 d_vendorlib (vendorlib.U):
1600 This variable conditionally defines PERL_VENDORLIB.
1602 d_vfork (d_vfork.U):
1603 This variable conditionally defines the HAS_VFORK symbol, which
1604 indicates the vfork() routine is available.
1606 d_void_closedir (d_closedir.U):
1607 This variable conditionally defines VOID_CLOSEDIR if closedir()
1608 does not return a value.
1610 d_voidsig (d_voidsig.U):
1611 This variable conditionally defines VOIDSIG if this system
1612 declares "void (*signal(...))()" in signal.h. The old way was to
1613 declare it as "int (*signal(...))()".
1615 d_voidtty (i_sysioctl.U):
1616 This variable conditionally defines USE_IOCNOTTY to indicate that the
1617 ioctl() call with TIOCNOTTY should be used to void tty association.
1618 Otherwise (on USG probably), it is enough to close the standard file
1619 decriptors and do a setpgrp().
1621 d_volatile (d_volatile.U):
1622 This variable conditionally defines the HASVOLATILE symbol, which
1623 indicates to the C program that this C compiler knows about the
1624 volatile declaration.
1626 d_vprintf (d_vprintf.U):
1627 This variable conditionally defines the HAS_VPRINTF symbol, which
1628 indicates to the C program that the vprintf() routine is available
1629 to printf with a pointer to an argument list.
1631 d_wait4 (d_wait4.U):
1632 This variable conditionally defines the HAS_WAIT4 symbol, which
1633 indicates the wait4() routine is available.
1635 d_waitpid (d_waitpid.U):
1636 This variable conditionally defines HAS_WAITPID if waitpid() is
1637 available to wait for child process.
1639 d_wcstombs (d_wcstombs.U):
1640 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1641 indicates to the C program that the wcstombs() routine is available
1642 to convert wide character strings to multibyte strings.
1644 d_wctomb (d_wctomb.U):
1645 This variable conditionally defines the HAS_WCTOMB symbol, which
1646 indicates to the C program that the wctomb() routine is available
1647 to convert a wide character to a multibyte.
1650 This variable conditionally defines the symbol XENIX, which alerts
1651 the C program that it runs under Xenix.
1654 This variable is used internally by Configure to determine the
1655 full pathname (if any) of the date program. After Configure runs,
1656 the value is reset to a plain "date" and is not useful.
1658 db_hashtype (i_db.U):
1659 This variable contains the type of the hash structure element
1660 in the <db.h> header file. In older versions of DB, it was
1661 int, while in newer ones it is u_int32_t.
1663 db_prefixtype (i_db.U):
1664 This variable contains the type of the prefix structure element
1665 in the <db.h> header file. In older versions of DB, it was
1666 int, while in newer ones it is size_t.
1668 defvoidused (voidflags.U):
1669 This variable contains the default value of the VOIDUSED symbol (15).
1671 direntrytype (i_dirent.U):
1672 This symbol is set to 'struct direct' or 'struct dirent' depending on
1673 whether dirent is available or not. You should use this pseudo type to
1674 portably declare your directory entries.
1677 This variable contains the extension that is to be used for the
1678 dynamically loaded modules that perl generaties.
1681 This variable contains the name of the dynamic loading file that
1682 will be used with the package.
1684 doublesize (doublesize.U):
1685 This variable contains the value of the DOUBLESIZE symbol, which
1686 indicates to the C program how many bytes there are in a double.
1688 drand01 (randfunc.U):
1689 Indicates the macro to be used to generate normalized
1690 random numbers. Uses randfunc, often divided by
1691 (double) (((unsigned long) 1 << randbits)) in order to
1692 normalize the result.
1693 In C programs, the macro 'Drand01' is mapped to drand01.
1695 dynamic_ext (Extensions.U):
1696 This variable holds a list of XS extension files we want to
1697 link dynamically into the package. It is used by Makefile.
1699 eagain (nblock_io.U):
1700 This variable bears the symbolic errno code set by read() when no
1701 data is present on the file and non-blocking I/O was enabled (otherwise,
1702 read() blocks naturally).
1705 This variable conditionally defines EBCDIC if this
1706 system uses EBCDIC encoding. Among other things, this
1707 means that the character ranges are not contiguous.
1711 This variable is used internally by Configure to determine the
1712 full pathname (if any) of the echo program. After Configure runs,
1713 the value is reset to a plain "echo" and is not useful.
1716 This variable is used internally by Configure to determine the
1717 full pathname (if any) of the egrep program. After Configure runs,
1718 the value is reset to a plain "egrep" and is not useful.
1721 This variable is defined but not used by Configure.
1722 The value is a plain '' and is not useful.
1725 When running under Eunice this variable contains a command which will
1726 convert a shell script to the proper form of text file for it to be
1727 executable by the shell. On other systems it is a no-op.
1730 This is an old synonym for _exe.
1733 This variable is used internally by Configure to determine the
1734 full pathname (if any) of the expr program. After Configure runs,
1735 the value is reset to a plain "expr" and is not useful.
1737 extensions (Extensions.U):
1738 This variable holds a list of all extension files (both XS and
1739 non-xs linked into the package. It is propagated to Config.pm
1740 and is typically used to test whether a particular extesion
1743 fflushall (fflushall.U):
1744 This symbol, if defined, tells that to flush
1745 all pending stdio output one must loop through all
1746 the stdio file handles stored in an array and fflush them.
1747 Note that if fflushNULL is defined, fflushall will not
1748 even be probed for and will be left undefined.
1750 fflushNULL (fflushall.U):
1751 This symbol, if defined, tells that fflush(NULL) does flush
1752 all pending stdio output.
1755 This variable is defined but not used by Configure.
1756 The value is a plain '' and is not useful.
1758 firstmakefile (Unix.U):
1759 This variable defines the first file searched by make. On unix,
1760 it is makefile (then Makefile). On case-insensitive systems,
1761 it might be something else. This is only used to deal with
1762 convoluted make depend tricks.
1765 This variable is defined but not used by Configure.
1766 The value is a plain '' and is not useful.
1768 fpossize (fpossize.U):
1769 This variable contains the size of a fpostype in bytes.
1771 fpostype (fpostype.U):
1772 This variable defines Fpos_t to be something like fpos_t, long,
1773 uint, or whatever type is used to declare file positions in libc.
1775 freetype (mallocsrc.U):
1776 This variable contains the return type of free(). It is usually
1777 void, but occasionally int.
1780 This variable contains the full pathname to 'ar', whether or
1781 not the user has specified 'portability'. This is only used
1785 This variable contains the full pathname to 'csh', whether or
1786 not the user has specified 'portability'. This is only used
1787 in the compiled C program, and we assume that all systems which
1788 can share this executable will have the same full pathname to
1791 full_sed (Loc_sed.U):
1792 This variable contains the full pathname to 'sed', whether or
1793 not the user has specified 'portability'. This is only used
1794 in the compiled C program, and we assume that all systems which
1795 can share this executable will have the same full pathname to
1799 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1800 indicate whether the compiler is version 1 or 2. This is used in
1801 setting some of the default cflags. It is set to '' if not gcc.
1804 This variable contains the format string used for printing a Gid_t.
1806 gidsign (gidsign.U):
1807 This variable contains the signedness of a gidtype.
1808 1 for unsigned, -1 for signed.
1810 gidsize (gidsize.U):
1811 This variable contains the size of a gidtype in bytes.
1813 gidtype (gidtype.U):
1814 This variable defines Gid_t to be something like gid_t, int,
1815 ushort, or whatever type is used to declare the return type
1816 of getgid(). Typically, it is the type of group ids in the kernel.
1819 This variable holds the general path (space-separated) used to
1820 find libraries. It may contain directories that do not exist on
1821 this platform, libpth is the cleaned-up version.
1824 This variable is used internally by Configure to determine the
1825 full pathname (if any) of the grep program. After Configure runs,
1826 the value is reset to a plain "grep" and is not useful.
1829 This variable contains a command that produces the text of the
1830 /etc/group file. This is normally "cat /etc/group", but can be
1831 "ypcat group" when NIS is used.
1832 On some systems, such as os390, there may be no equivalent
1833 command, in which case this variable is unset.
1835 groupstype (groupstype.U):
1836 This variable defines Groups_t to be something like gid_t, int,
1837 ushort, or whatever type is used for the second argument to
1838 getgroups() and setgroups(). Usually, this is the same as
1839 gidtype (gid_t), but sometimes it isn't.
1842 This variable is used internally by Configure to determine the
1843 full pathname (if any) of the gzip program. After Configure runs,
1844 the value is reset to a plain "gzip" and is not useful.
1846 h_fcntl (h_fcntl.U):
1847 This is variable gets set in various places to tell i_fcntl that
1848 <fcntl.h> should be included.
1850 h_sysfile (h_sysfile.U):
1851 This is variable gets set in various places to tell i_sys_file that
1852 <sys/file.h> should be included.
1855 Gives the type of hints used for previous answers. May be one of
1856 "default", "recommended" or "previous".
1859 This variable contains a command that produces the text of the
1860 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1861 "ypcat hosts" when NIS is used.
1862 On some systems, such as os390, there may be no equivalent
1863 command, in which case this variable is unset.
1866 This variable contains a flag which will tell the C compiler and loader
1867 to produce a program running with a huge memory model. If the
1868 huge model is not supported, contains the flag to produce large
1869 model programs. It is up to the Makefile to use this.
1872 This variable is the size of an I16 in bytes.
1875 This variable contains the C type used for Perl's I16.
1878 This variable is the size of an I32 in bytes.
1881 This variable contains the C type used for Perl's I32.
1884 This variable is the size of an I64 in bytes.
1887 This variable contains the C type used for Perl's I64.
1890 This variable is the size of an I8 in bytes.
1893 This variable contains the C type used for Perl's I8.
1895 i_arpainet (i_arpainet.U):
1896 This variable conditionally defines the I_ARPA_INET symbol,
1897 and indicates whether a C program should include <arpa/inet.h>.
1899 i_bsdioctl (i_sysioctl.U):
1900 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1901 indicates to the C program that <sys/bsdioctl.h> exists and should
1905 This variable conditionally defines the I_DB symbol, and indicates
1906 whether a C program may include Berkeley's DB include file <db.h>.
1909 This variable conditionally defines the I_DBM symbol, which
1910 indicates to the C program that <dbm.h> exists and should
1913 i_dirent (i_dirent.U):
1914 This variable conditionally defines I_DIRENT, which indicates
1915 to the C program that it should include <dirent.h>.
1918 This variable conditionally defines the I_DLD symbol, which
1919 indicates to the C program that <dld.h> (GNU dynamic loading)
1920 exists and should be included.
1922 i_dlfcn (i_dlfcn.U):
1923 This variable conditionally defines the I_DLFCN symbol, which
1924 indicates to the C program that <dlfcn.h> exists and should
1927 i_fcntl (i_fcntl.U):
1928 This variable controls the value of I_FCNTL (which tells
1929 the C program to include <fcntl.h>).
1931 i_float (i_float.U):
1932 This variable conditionally defines the I_FLOAT symbol, and indicates
1933 whether a C program may include <float.h> to get symbols like DBL_MAX
1934 or DBL_MIN, i.e. machine dependent floating point values.
1937 This variable conditionally defines the I_GDBM symbol, which
1938 indicates to the C program that <gdbm.h> exists and should
1942 This variable conditionally defines the I_GRP symbol, and indicates
1943 whether a C program should include <grp.h>.
1945 i_iconv (i_iconv.U):
1946 This variable conditionally defines the I_ICONV symbol, and indicates
1947 whether a C program should include <iconv.h>.
1949 i_ieeefp (i_ieeefp.U):
1950 This variable conditionally defines the I_IEEEFP symbol, and indicates
1951 whether a C program should include <ieeefp.h>.
1953 i_inttypes (i_inttypes.U):
1954 This variable conditionally defines the I_INTTYPES symbol,
1955 and indicates whether a C program should include <inttypes.h>.
1957 i_limits (i_limits.U):
1958 This variable conditionally defines the I_LIMITS symbol, and indicates
1959 whether a C program may include <limits.h> to get symbols like WORD_BIT
1962 i_locale (i_locale.U):
1963 This variable conditionally defines the I_LOCALE symbol,
1964 and indicates whether a C program should include <locale.h>.
1966 i_machcthr (i_machcthr.U):
1967 This variable conditionally defines the I_MACH_CTHREADS symbol,
1968 and indicates whether a C program should include <mach/cthreads.h>.
1970 i_malloc (i_malloc.U):
1971 This variable conditionally defines the I_MALLOC symbol, and indicates
1972 whether a C program should include <malloc.h>.
1975 This variable conditionally defines the I_MATH symbol, and indicates
1976 whether a C program may include <math.h>.
1978 i_memory (i_memory.U):
1979 This variable conditionally defines the I_MEMORY symbol, and indicates
1980 whether a C program should include <memory.h>.
1982 i_mntent (i_mntent.U):
1983 This variable conditionally defines the I_MNTENT symbol, and indicates
1984 whether a C program should include <mntent.h>.
1987 This variable conditionally defines the I_NDBM symbol, which
1988 indicates to the C program that <ndbm.h> exists and should
1991 i_netdb (i_netdb.U):
1992 This variable conditionally defines the I_NETDB symbol, and indicates
1993 whether a C program should include <netdb.h>.
1995 i_neterrno (i_neterrno.U):
1996 This variable conditionally defines the I_NET_ERRNO symbol, which
1997 indicates to the C program that <net/errno.h> exists and should
2000 i_netinettcp (i_netinettcp.U):
2001 This variable conditionally defines the I_NETINET_TCP symbol,
2002 and indicates whether a C program should include <netinet/tcp.h>.
2005 This variable conditionally defines I_NETINET_IN, which indicates
2006 to the C program that it should include <netinet/in.h>. Otherwise,
2007 you may try <sys/in.h>.
2010 This variable conditionally defines the I_POLL symbol, and indicates
2011 whether a C program should include <poll.h>.
2013 i_pthread (i_pthread.U):
2014 This variable conditionally defines the I_PTHREAD symbol,
2015 and indicates whether a C program should include <pthread.h>.
2018 This variable conditionally defines I_PWD, which indicates
2019 to the C program that it should include <pwd.h>.
2021 i_rpcsvcdbm (i_dbm.U):
2022 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2023 indicates to the C program that <rpcsvc/dbm.h> exists and should
2024 be included. Some System V systems might need this instead of <dbm.h>.
2027 This variable conditionally defines the I_SFIO symbol,
2028 and indicates whether a C program should include <sfio.h>.
2030 i_sgtty (i_termio.U):
2031 This variable conditionally defines the I_SGTTY symbol, which
2032 indicates to the C program that it should include <sgtty.h> rather
2035 i_shadow (i_shadow.U):
2036 This variable conditionally defines the I_SHADOW symbol, and indicates
2037 whether a C program should include <shadow.h>.
2039 i_socks (i_socks.U):
2040 This variable conditionally defines the I_SOCKS symbol, and indicates
2041 whether a C program should include <socks.h>.
2043 i_stdarg (i_varhdr.U):
2044 This variable conditionally defines the I_STDARG symbol, which
2045 indicates to the C program that <stdarg.h> exists and should
2048 i_stddef (i_stddef.U):
2049 This variable conditionally defines the I_STDDEF symbol, which
2050 indicates to the C program that <stddef.h> exists and should
2053 i_stdlib (i_stdlib.U):
2054 This variable conditionally defines the I_STDLIB symbol, which
2055 indicates to the C program that <stdlib.h> exists and should
2058 i_string (i_string.U):
2059 This variable conditionally defines the I_STRING symbol, which
2060 indicates that <string.h> should be included rather than <strings.h>.
2062 i_sunmath (i_sunmath.U):
2063 This variable conditionally defines the I_SUNMATH symbol, and indicates
2064 whether a C program should include <sunmath.h>.
2066 i_sysaccess (i_sysaccess.U):
2067 This variable conditionally defines the I_SYS_ACCESS symbol,
2068 and indicates whether a C program should include <sys/access.h>.
2070 i_sysdir (i_sysdir.U):
2071 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2072 whether a C program should include <sys/dir.h>.
2074 i_sysfile (i_sysfile.U):
2075 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2076 whether a C program should include <sys/file.h> to get R_OK and friends.
2078 i_sysfilio (i_sysioctl.U):
2079 This variable conditionally defines the I_SYS_FILIO symbol, which
2080 indicates to the C program that <sys/filio.h> exists and should
2081 be included in preference to <sys/ioctl.h>.
2084 This variable conditionally defines I_SYS_IN, which indicates
2085 to the C program that it should include <sys/in.h> instead of
2088 i_sysioctl (i_sysioctl.U):
2089 This variable conditionally defines the I_SYS_IOCTL symbol, which
2090 indicates to the C program that <sys/ioctl.h> exists and should
2093 i_syslog (i_syslog.U):
2094 This variable conditionally defines the I_SYSLOG symbol,
2095 and indicates whether a C program should include <syslog.h>.
2097 i_sysmman (i_sysmman.U):
2098 This variable conditionally defines the I_SYS_MMAN symbol, and
2099 indicates whether a C program should include <sys/mman.h>.
2101 i_sysmode (i_sysmode.U):
2102 This variable conditionally defines the I_SYSMODE symbol,
2103 and indicates whether a C program should include <sys/mode.h>.
2105 i_sysmount (i_sysmount.U):
2106 This variable conditionally defines the I_SYSMOUNT symbol,
2107 and indicates whether a C program should include <sys/mount.h>.
2109 i_sysndir (i_sysndir.U):
2110 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2111 whether a C program should include <sys/ndir.h>.
2113 i_sysparam (i_sysparam.U):
2114 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2115 whether a C program should include <sys/param.h>.
2117 i_sysresrc (i_sysresrc.U):
2118 This variable conditionally defines the I_SYS_RESOURCE symbol,
2119 and indicates whether a C program should include <sys/resource.h>.
2121 i_syssecrt (i_syssecrt.U):
2122 This variable conditionally defines the I_SYS_SECURITY symbol,
2123 and indicates whether a C program should include <sys/security.h>.
2125 i_sysselct (i_sysselct.U):
2126 This variable conditionally defines I_SYS_SELECT, which indicates
2127 to the C program that it should include <sys/select.h> in order to
2128 get the definition of struct timeval.
2130 i_syssockio (i_sysioctl.U):
2131 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2132 C program that socket ioctl codes may be found in <sys/sockio.h>
2133 instead of <sys/ioctl.h>.
2135 i_sysstat (i_sysstat.U):
2136 This variable conditionally defines the I_SYS_STAT symbol,
2137 and indicates whether a C program should include <sys/stat.h>.
2139 i_sysstatfs (i_sysstatfs.U):
2140 This variable conditionally defines the I_SYSSTATFS symbol,
2141 and indicates whether a C program should include <sys/statfs.h>.
2143 i_sysstatvfs (i_sysstatvfs.U):
2144 This variable conditionally defines the I_SYSSTATVFS symbol,
2145 and indicates whether a C program should include <sys/statvfs.h>.
2147 i_systime (i_time.U):
2148 This variable conditionally defines I_SYS_TIME, which indicates
2149 to the C program that it should include <sys/time.h>.
2151 i_systimek (i_time.U):
2152 This variable conditionally defines I_SYS_TIME_KERNEL, which
2153 indicates to the C program that it should include <sys/time.h>
2154 with KERNEL defined.
2156 i_systimes (i_systimes.U):
2157 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2158 whether a C program should include <sys/times.h>.
2160 i_systypes (i_systypes.U):
2161 This variable conditionally defines the I_SYS_TYPES symbol,
2162 and indicates whether a C program should include <sys/types.h>.
2164 i_sysuio (i_sysuio.U):
2165 This variable conditionally defines the I_SYSUIO symbol, and indicates
2166 whether a C program should include <sys/uio.h>.
2168 i_sysun (i_sysun.U):
2169 This variable conditionally defines I_SYS_UN, which indicates
2170 to the C program that it should include <sys/un.h> to get UNIX
2171 domain socket definitions.
2173 i_sysutsname (i_sysutsname.U):
2174 This variable conditionally defines the I_SYSUTSNAME symbol,
2175 and indicates whether a C program should include <sys/utsname.h>.
2177 i_sysvfs (i_sysvfs.U):
2178 This variable conditionally defines the I_SYSVFS symbol,
2179 and indicates whether a C program should include <sys/vfs.h>.
2181 i_syswait (i_syswait.U):
2182 This variable conditionally defines I_SYS_WAIT, which indicates
2183 to the C program that it should include <sys/wait.h>.
2185 i_termio (i_termio.U):
2186 This variable conditionally defines the I_TERMIO symbol, which
2187 indicates to the C program that it should include <termio.h> rather
2190 i_termios (i_termio.U):
2191 This variable conditionally defines the I_TERMIOS symbol, which
2192 indicates to the C program that the POSIX <termios.h> file is
2196 This variable conditionally defines I_TIME, which indicates
2197 to the C program that it should include <time.h>.
2199 i_unistd (i_unistd.U):
2200 This variable conditionally defines the I_UNISTD symbol, and indicates
2201 whether a C program should include <unistd.h>.
2203 i_ustat (i_ustat.U):
2204 This variable conditionally defines the I_USTAT symbol, and indicates
2205 whether a C program should include <ustat.h>.
2207 i_utime (i_utime.U):
2208 This variable conditionally defines the I_UTIME symbol, and indicates
2209 whether a C program should include <utime.h>.
2211 i_values (i_values.U):
2212 This variable conditionally defines the I_VALUES symbol, and indicates
2213 whether a C program may include <values.h> to get symbols like MAXLONG
2216 i_varargs (i_varhdr.U):
2217 This variable conditionally defines I_VARARGS, which indicates
2218 to the C program that it should include <varargs.h>.
2220 i_varhdr (i_varhdr.U):
2221 Contains the name of the header to be included to get va_dcl definition.
2222 Typically one of varargs.h or stdarg.h.
2224 i_vfork (i_vfork.U):
2225 This variable conditionally defines the I_VFORK symbol, and indicates
2226 whether a C program should include vfork.h.
2228 ignore_versioned_solibs (libs.U):
2229 This variable should be non-empty if non-versioned shared
2230 libraries (libfoo.so.x.y) are to be ignored (because they
2231 cannot be linked against).
2233 inc_version_list (inc_version_list.U):
2234 This variable specifies the list of subdirectories in over
2235 which perl.c:incpush() and lib/lib.pm will automatically
2236 search when adding directories to @INC. The elements in
2237 the list are separated by spaces. This is only useful
2238 if you have a perl library directory tree structured like the
2239 default one. See INSTALL for how this works. The versioned
2240 site_perl directory was introduced in 5.005, so that is the
2241 lowest possible value.
2243 inc_version_list_init (inc_version_list.U):
2244 This variable holds the same list as inc_version_list, but
2245 each item is enclosed in double quotes and separated by commas,
2246 suitable for use in the PERL_INC_VERSION_LIST initialization.
2249 This variable must preceed the normal include path to get hte
2250 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2251 Value can be "" or "/bsd43" on mips.
2254 This variable is defined but not used by Configure.
2255 The value is a plain '' and is not useful.
2257 installarchlib (archlib.U):
2258 This variable is really the same as archlibexp but may differ on
2259 those systems using AFS. For extra portability, only this variable
2260 should be used in makefiles.
2263 This variable is the same as binexp unless AFS is running in which case
2264 the user is explicitely prompted for it. This variable should always
2265 be used in your makefiles for maximum portability.
2267 installman1dir (man1dir.U):
2268 This variable is really the same as man1direxp, unless you are using
2269 AFS in which case it points to the read/write location whereas
2270 man1direxp only points to the read-only access location. For extra
2271 portability, you should only use this variable within your makefiles.
2273 installman3dir (man3dir.U):
2274 This variable is really the same as man3direxp, unless you are using
2275 AFS in which case it points to the read/write location whereas
2276 man3direxp only points to the read-only access location. For extra
2277 portability, you should only use this variable within your makefiles.
2279 installprefix (installprefix.U):
2280 This variable holds the name of the directory below which
2281 "make install" will install the package. For most users, this
2282 is the same as prefix. However, it is useful for
2283 installing the software into a different (usually temporary)
2284 location after which it can be bundled up and moved somehow
2285 to the final location specified by prefix.
2287 installprefixexp (installprefix.U):
2288 This variable holds the full absolute path of installprefix
2289 with all ~-expansion done.
2291 installprivlib (privlib.U):
2292 This variable is really the same as privlibexp but may differ on
2293 those systems using AFS. For extra portability, only this variable
2294 should be used in makefiles.
2296 installscript (scriptdir.U):
2297 This variable is usually the same as scriptdirexp, unless you are on
2298 a system running AFS, in which case they may differ slightly. You
2299 should always use this variable within your makefiles for portability.
2301 installsitearch (sitearch.U):
2302 This variable is really the same as sitearchexp but may differ on
2303 those systems using AFS. For extra portability, only this variable
2304 should be used in makefiles.
2306 installsitebin (sitebin.U):
2307 This variable is usually the same as sitebinexp, unless you are on
2308 a system running AFS, in which case they may differ slightly. You
2309 should always use this variable within your makefiles for portability.
2311 installsitelib (sitelib.U):
2312 This variable is really the same as sitelibexp but may differ on
2313 those systems using AFS. For extra portability, only this variable
2314 should be used in makefiles.
2316 installstyle (installstyle.U):
2317 This variable describes the "style" of the perl installation.
2318 This is intended to be useful for tools that need to
2319 manipulate entire perl distributions. Perl itself doesn't use
2320 this to find its libraries -- the library directories are
2321 stored directly in Config.pm. Currently, there are only two
2322 styles: "lib" and "lib/perl5". The default library locations
2323 (e.g. privlib, sitelib) are either $prefix/lib or
2324 $prefix/lib/perl5. The former is useful if $prefix is a
2325 directory dedicated to perl (e.g. /opt/perl), while the latter
2326 is useful if $prefix is shared by many packages, e.g. if
2328 This may later be extended to include other information, so
2329 be careful with pattern-matching on the results.
2330 For compatibility with perl5.005 and earlier, the default
2331 setting is based on whether or not $prefix contains the string
2334 installusrbinperl (instubperl.U):
2335 This variable tells whether Perl should be installed also as
2336 /usr/bin/perl in addition to
2339 installvendorarch (vendorarch.U):
2340 This variable is really the same as vendorarchexp but may differ on
2341 those systems using AFS. For extra portability, only this variable
2342 should be used in makefiles.
2344 installvendorbin (vendorbin.U):
2345 This variable is really the same as vendorbinexp but may differ on
2346 those systems using AFS. For extra portability, only this variable
2347 should be used in makefiles.
2349 installvendorlib (vendorlib.U):
2350 This variable is really the same as vendorlibexp but may differ on
2351 those systems using AFS. For extra portability, only this variable
2352 should be used in makefiles.
2354 intsize (intsize.U):
2355 This variable contains the value of the INTSIZE symbol, which
2356 indicates to the C program how many bytes there are in an int.
2358 ivdformat (perlxvf.U):
2359 This variable contains the format string used for printing
2360 a Perl IV as a signed decimal integer.
2363 This variable is the size of an IV in bytes.
2366 This variable contains the C type used for Perl's IV.
2368 known_extensions (Extensions.U):
2369 This variable holds a list of all XS extensions included in
2373 This variable is defined but not used by Configure.
2374 The value is a plain '' and is not useful.
2377 This variable contains a flag which will tell the C compiler and loader
2378 to produce a program running with a large memory model. It is up to
2379 the Makefile to use this.
2382 This variable indicates the program to be used to link
2383 libraries for dynamic loading. On some systems, it is 'ld'.
2384 On ELF systems, it should be $cc. Mostly, we'll try to respect
2385 the hint file setting.
2387 lddlflags (dlsrc.U):
2388 This variable contains any special flags that might need to be
2389 passed to $ld to create a shared library suitable for dynamic
2390 loading. It is up to the makefile to use it. For hpux, it
2391 should be '-b'. For sunos 4.1, it is empty.
2393 ldflags (ccflags.U):
2394 This variable contains any additional C loader flags desired by
2395 the user. It is up to the Makefile to use this.
2397 ldlibpthname (libperl.U):
2398 This variable holds the name of the shared library
2399 search path, often LD_LIBRARY_PATH. To get an empty
2400 string, the hints file must set this to 'none'.
2403 This variable is used internally by Configure to determine the
2404 full pathname (if any) of the less program. After Configure runs,
2405 the value is reset to a plain "less" and is not useful.
2408 This is an old synonym for _a.
2411 This variable contains the location of the C library.
2413 libperl (libperl.U):
2414 The perl executable is obtained by linking perlmain.c with
2415 libperl, any static extensions (usually just DynaLoader),
2416 and any other libraries needed on this system. libperl
2417 is usually libperl.a, but can also be libperl.so.xxx if
2418 the user wishes to build a perl executable with a shared
2422 This variable holds the general path (space-separated) used to find
2423 libraries. It is intended to be used by other units.
2426 This variable holds the additional libraries we want to use.
2427 It is up to the Makefile to deal with it.
2430 This variable holds the directory names aka dirnames of the libraries
2431 we found and accepted, duplicates are removed.
2434 This variable holds the filenames aka basenames of the libraries
2435 we found and accepted.
2438 This variable holds the full pathnames of the libraries
2439 we found and accepted.
2442 This variable holds the directory names probed for libraries.
2444 libswanted (Myinit.U):
2445 This variable holds a list of all the libraries we want to
2446 search. The order is chosen to pick up the c library
2447 ahead of ucb or bsd libraries for SVR4.
2450 This variable is defined but not used by Configure.
2451 The value is a plain '' and is not useful.
2454 This variable is defined but not used by Configure.
2455 The value is a plain '' and is not useful.
2457 lkflags (ccflags.U):
2458 This variable contains any additional C partial linker flags desired by
2459 the user. It is up to the Makefile to use this.
2462 This variable is used internally by Configure to determine the
2463 full pathname (if any) of the ln program. After Configure runs,
2464 the value is reset to a plain "ln" and is not useful.
2467 This variable holds the name of the command to make
2468 symbolic links (if they are supported). It can be used
2469 in the Makefile. It is either 'ln -s' or 'ln'
2471 locincpth (ccflags.U):
2472 This variable contains a list of additional directories to be
2473 searched by the compiler. The appropriate '-I' directives will
2474 be added to ccflags. This is intended to simplify setting
2475 local directories from the Configure command line.
2476 It's not much, but it parallels the loclibpth stuff in libpth.U.
2478 loclibpth (libpth.U):
2479 This variable holds the paths (space-separated) used to find local
2480 libraries. It is prepended to libpth, and is intended to be easily
2481 set from the command line.
2483 longdblsize (d_longdbl.U):
2484 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2485 indicates to the C program how many bytes there are in a long double,
2486 if this system supports long doubles.
2488 longlongsize (d_longlong.U):
2489 This variable contains the value of the LONGLONGSIZE symbol, which
2490 indicates to the C program how many bytes there are in a long long,
2491 if this system supports long long.
2493 longsize (intsize.U):
2494 This variable contains the value of the LONGSIZE symbol, which
2495 indicates to the C program how many bytes there are in a long.
2498 This variable is defined but not used by Configure.
2499 The value is a plain '' and is not useful.
2502 This variable is defined but not used by Configure.
2503 The value is a plain '' and is not useful.
2506 This variable is used internally by Configure to determine the
2507 full pathname (if any) of the ls program. After Configure runs,
2508 the value is reset to a plain "ls" and is not useful.
2510 lseeksize (lseektype.U):
2511 This variable defines lseektype to be something like off_t, long,
2512 or whatever type is used to declare lseek offset's type in the
2513 kernel (which also appears to be lseek's return type).
2515 lseektype (lseektype.U):
2516 This variable defines lseektype to be something like off_t, long,
2517 or whatever type is used to declare lseek offset's type in the
2518 kernel (which also appears to be lseek's return type).
2521 This variable is defined but not used by Configure.
2522 The value is a plain '' and is not useful.
2525 This variable is defined but not used by Configure.
2526 The value is a plain '' and is not useful.
2529 This variable is used internally by Configure to determine the
2530 full pathname (if any) of the make program. After Configure runs,
2531 the value is reset to a plain "make" and is not useful.
2533 make_set_make (make.U):
2534 Some versions of 'make' set the variable MAKE. Others do not.
2535 This variable contains the string to be included in Makefile.SH
2536 so that MAKE is set if needed, and not if not needed.
2537 Possible values are:
2538 make_set_make='#' # If your make program handles this for you,
2539 make_set_make="MAKE=$make" # if it doesn't.
2540 I used a comment character so that we can distinguish a
2541 'set' value (from a previous config.sh or Configure '-D' option)
2542 from an uncomputed value.
2544 mallocobj (mallocsrc.U):
2545 This variable contains the name of the malloc.o that this package
2546 generates, if that malloc.o is preferred over the system malloc.
2547 Otherwise the value is null. This variable is intended for generating
2548 Makefiles. See mallocsrc.
2550 mallocsrc (mallocsrc.U):
2551 This variable contains the name of the malloc.c that comes with
2552 the package, if that malloc.c is preferred over the system malloc.
2553 Otherwise the value is null. This variable is intended for generating
2556 malloctype (mallocsrc.U):
2557 This variable contains the kind of ptr returned by malloc and realloc.
2559 man1dir (man1dir.U):
2560 This variable contains the name of the directory in which manual
2561 source pages are to be put. It is the responsibility of the
2562 Makefile.SH to get the value of this into the proper command.
2563 You must be prepared to do the ~name expansion yourself.
2565 man1direxp (man1dir.U):
2566 This variable is the same as the man1dir variable, but is filename
2567 expanded at configuration time, for convenient use in makefiles.
2569 man1ext (man1dir.U):
2570 This variable contains the extension that the manual page should
2571 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2574 man3dir (man3dir.U):
2575 This variable contains the name of the directory in which manual
2576 source pages are to be put. It is the responsibility of the
2577 Makefile.SH to get the value of this into the proper command.
2578 You must be prepared to do the ~name expansion yourself.
2580 man3direxp (man3dir.U):
2581 This variable is the same as the man3dir variable, but is filename
2582 expanded at configuration time, for convenient use in makefiles.
2584 man3ext (man3dir.U):
2585 This variable contains the extension that the manual page should
2586 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2590 This variable is used internally by Configure to determine the
2591 full pathname (if any) of the Mcc program. After Configure runs,
2592 the value is reset to a plain "Mcc" and is not useful.
2595 This variable contains a flag which will tell the C compiler and loader
2596 to produce a program running with a medium memory model. If the
2597 medium model is not supported, contains the flag to produce large
2598 model programs. It is up to the Makefile to use this.
2600 mips_type (usrinc.U):
2601 This variable holds the environment type for the mips system.
2602 Possible values are "BSD 4.3" and "System V".
2605 This variable is used internally by Configure to determine the
2606 full pathname (if any) of the mkdir program. After Configure runs,
2607 the value is reset to a plain "mkdir" and is not useful.
2609 mmaptype (d_mmap.U):
2610 This symbol contains the type of pointer returned by mmap()
2611 (and simultaneously the type of the first argument).
2612 It can be 'void *' or 'caddr_t'.
2615 This variable contains the list of memory models supported by this
2616 system. Possible component values are none, split, unsplit, small,
2617 medium, large, and huge. The component values are space separated.
2619 modetype (modetype.U):
2620 This variable defines modetype to be something like mode_t,
2621 int, unsigned short, or whatever type is used to declare file
2622 modes for system calls.
2625 This variable is used internally by Configure to determine the
2626 full pathname (if any) of the more program. After Configure runs,
2627 the value is reset to a plain "more" and is not useful.
2629 multiarch (multiarch.U):
2630 This variable conditionally defines the MULTIARCH symbol
2631 which signifies the presence of multiplatform files.
2632 This is normally set by hints files.
2635 This variable is defined but not used by Configure.
2636 The value is a plain '' and is not useful.
2638 myarchname (archname.U):
2639 This variable holds the architecture name computed by Configure in
2640 a previous run. It is not intended to be perused by any user and
2641 should never be set in a hint file.
2643 mydomain (myhostname.U):
2644 This variable contains the eventual value of the MYDOMAIN symbol,
2645 which is the domain of the host the program is going to run on.
2646 The domain must be appended to myhostname to form a complete host name.
2647 The dot comes with mydomain, and need not be supplied by the program.
2649 myhostname (myhostname.U):
2650 This variable contains the eventual value of the MYHOSTNAME symbol,
2651 which is the name of the host the program is going to run on.
2652 The domain is not kept with hostname, but must be gotten from mydomain.
2653 The dot comes with mydomain, and need not be supplied by the program.
2655 myuname (Oldconfig.U):
2656 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2657 pseudo variables assignments in the output are stripped, thank you. The
2658 whole thing is then lower-cased.
2661 This variable contains the '-n' flag if that is what causes the echo
2662 command to suppress newline. Otherwise it is null. Correct usage is
2663 $echo $n "prompt for a question: $c".
2665 netdb_hlen_type (netdbtype.U):
2666 This variable holds the type used for the 2nd argument to
2667 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2668 This is only useful if you have gethostbyaddr(), naturally.
2670 netdb_host_type (netdbtype.U):
2671 This variable holds the type used for the 1st argument to
2672 gethostbyaddr(). Usually, this is char * or void *, possibly
2673 with or without a const prefix.
2674 This is only useful if you have gethostbyaddr(), naturally.
2676 netdb_name_type (netdbtype.U):
2677 This variable holds the type used for the argument to
2678 gethostbyname(). Usually, this is char * or const char *.
2679 This is only useful if you have gethostbyname(), naturally.
2681 netdb_net_type (netdbtype.U):
2682 This variable holds the type used for the 1st argument to
2683 getnetbyaddr(). Usually, this is int or long.
2684 This is only useful if you have getnetbyaddr(), naturally.
2687 This variable is used internally by Configure to determine the
2688 full pathname (if any) of the nm program. After Configure runs,
2689 the value is reset to a plain "nm" and is not useful.
2692 This variable holds the options that may be necessary for nm.
2694 nm_so_opt (usenm.U):
2695 This variable holds the options that may be necessary for nm
2696 to work on a shared library but that can not be used on an
2697 archive library. Currently, this is only used by Linux, where
2698 nm --dynamic is *required* to get symbols from an ELF library which
2699 has been stripped, but nm --dynamic is *fatal* on an archive library.
2700 Maybe Linux should just always set usenm=false.
2702 nonxs_ext (Extensions.U):
2703 This variable holds a list of all non-xs extensions included
2704 in the package. All of them will be built.
2707 This variable is used internally by Configure to determine the
2708 full pathname (if any) of the nroff program. After Configure runs,
2709 the value is reset to a plain "nroff" and is not useful.
2712 This variable is the size of an NV in bytes.
2715 This variable contains the C type used for Perl's NV.
2717 o_nonblock (nblock_io.U):
2718 This variable bears the symbol value to be used during open() or fcntl()
2719 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2720 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2721 but that is only supported by some devices.
2724 This is an old synonym for _o.
2726 old_pthread_create_joinable (d_pthrattrj.U):
2727 This variable defines the constant to use for creating joinable
2728 (aka undetached) pthreads. Unused if pthread.h defines
2729 PTHREAD_CREATE_JOINABLE. If used, possible values are
2730 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2732 optimize (ccflags.U):
2733 This variable contains any optimizer/debugger flag that should be used.
2734 It is up to the Makefile to use it.
2736 orderlib (orderlib.U):
2737 This variable is "true" if the components of libraries must be ordered
2738 (with `lorder $* | tsort`) before placing them in an archive. Set to
2739 "false" if ranlib or ar can generate random libraries.
2741 osname (Oldconfig.U):
2742 This variable contains the operating system name (e.g. sunos,
2743 solaris, hpux, etc.). It can be useful later on for setting
2744 defaults. Any spaces are replaced with underscores. It is set
2745 to a null string if we can't figure it out.
2747 osvers (Oldconfig.U):
2748 This variable contains the operating system version (e.g.
2749 4.1.3, 5.2, etc.). It is primarily used for helping select
2750 an appropriate hints file, but might be useful elsewhere for
2751 setting defaults. It is set to '' if we can't figure it out.
2752 We try to be flexible about how much of the version number
2753 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2754 same for this package, hints files might just be os_4.0 or
2755 os_4.1, etc., not keeping separate files for each little release.
2757 otherlibdirs (otherlibdirs.U):
2758 This variable contains a colon-separated set of paths for the perl
2759 binary to search for additional library files or modules.
2760 These directories will be tacked to the end of @INC.
2761 Perl will automatically search below each path for version-
2762 and architecture-specific directories. See inc_version_list
2764 A value of ' ' means 'none' and is used to preserve this value
2765 for the next run through Configure.
2767 package (package.U):
2768 This variable contains the name of the package being constructed.
2769 It is primarily intended for the use of later Configure units.
2772 This variable contains the name of the preferred pager on the system.
2773 Usual values are (the full pathnames of) more, less, pg, or cat.
2776 This variable contains a command that produces the text of the
2777 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2778 "ypcat passwd" when NIS is used.
2779 On some systems, such as os390, there may be no equivalent
2780 command, in which case this variable is unset.
2782 patchlevel (patchlevel.U):
2783 The patchlevel level of this package.
2784 The value of patchlevel comes from the patchlevel.h file.
2785 In a version number such as 5.6.1, this is the "6".
2786 In patchlevel.h, this is referred to as "PERL_VERSION".
2789 This is an old synonym for p_ in Head.U, the character
2790 used to separate elements in the command shell search PATH.
2793 This variable contains the full path (if any) to a previously
2794 installed perl5.005 or later suitable for running the script
2795 to determine inc_version_list.
2798 This variable is defined but not used by Configure.
2799 The value is a plain '' and is not useful.
2801 PERL_REVISION (Oldsyms.U):
2802 In a Perl version number such as 5.6.2, this is the 5.
2803 This value is manually set in patchlevel.h
2805 PERL_SUBVERSION (Oldsyms.U):
2806 In a Perl version number such as 5.6.2, this is the 2.
2807 Values greater than 50 represent potentially unstable
2808 development subversions.
2809 This value is manually set in patchlevel.h
2811 PERL_VERSION (Oldsyms.U):
2812 In a Perl version number such as 5.6.2, this is the 6.
2813 This value is manually set in patchlevel.h
2815 perladmin (perladmin.U):
2816 Electronic mail address of the perl5 administrator.
2818 perlpath (perlpath.U):
2819 This variable contains the eventual value of the PERLPATH symbol,
2820 which contains the name of the perl interpreter to be used in
2821 shell scripts and in the "eval 'exec'" idiom.
2824 This variable is used internally by Configure to determine the
2825 full pathname (if any) of the pg program. After Configure runs,
2826 the value is reset to a plain "pg" and is not useful.
2828 phostname (myhostname.U):
2829 This variable contains the eventual value of the PHOSTNAME symbol,
2830 which is a command that can be fed to popen() to get the host name.
2831 The program should probably not presume that the domain is or isn't
2834 pidtype (pidtype.U):
2835 This variable defines PIDTYPE to be something like pid_t, int,
2836 ushort, or whatever type is used to declare process ids in the kernel.
2839 Holds the private path used by Configure to find out the libraries.
2840 Its value is prepend to libpth. This variable takes care of special
2841 machines, like the mips. Usually, it should be empty.
2843 pm_apiversion (xs_apiversion.U):
2844 This variable contains the version of the oldest perl
2845 compatible with the present perl. (That is, pure perl modules
2846 written for $pm_apiversion will still work for the current
2847 version). perl.c:incpush() and lib/lib.pm will automatically
2848 search in $sitelib for older directories across major versions
2849 back to pm_apiversion. This is only useful if you have a perl
2850 library directory tree structured like the default one. The
2851 versioned site_perl library was introduced in 5.005, so that's
2852 the default setting for this variable. It's hard to imagine
2853 it changing before Perl6. It is included here for symmetry
2854 with xs_apiveprsion -- the searching algorithms will
2855 (presumably) be similar.
2856 See the INSTALL file for how this works.
2859 This variable is defined but not used by Configure.
2860 The value is a plain '' and is not useful.
2863 This variable is defined but not used by Configure.
2864 The value is a plain '' and is not useful.
2867 This variable holds the name of the directory below which the
2868 user will install the package. Usually, this is /usr/local, and
2869 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2870 man pages in /usr/local/man, etc. It is only used to set defaults
2871 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2873 prefixexp (prefix.U):
2874 This variable holds the full absolute path of the directory below
2875 which the user will install the package. Derived from prefix.
2877 privlib (privlib.U):
2878 This variable contains the eventual value of the PRIVLIB symbol,
2879 which is the name of the private library for this package. It may
2880 have a ~ on the front. It is up to the makefile to eventually create
2881 this directory while performing installation (with ~ substitution).
2883 privlibexp (privlib.U):
2884 This variable is the ~name expanded version of privlib, so that you
2885 may use it directly in Makefiles or shell scripts.
2887 prototype (prototype.U):
2888 This variable holds the eventual value of CAN_PROTOTYPE, which
2889 indicates the C compiler can handle funciton prototypes.
2891 ptrsize (ptrsize.U):
2892 This variable contains the value of the PTRSIZE symbol, which
2893 indicates to the C program how many bytes there are in a pointer.
2895 quadkind (quadtype.U):
2896 This variable, if defined, encodes the type of a quad:
2897 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2899 quadtype (quadtype.U):
2900 This variable defines Quad_t to be something like long, int,
2901 long long, int64_t, or whatever type is used for 64-bit integers.
2903 randbits (randfunc.U):
2904 Indicates how many bits are produced by the function used to
2905 generate normalized random numbers.
2907 randfunc (randfunc.U):
2908 Indicates the name of the random number function to use.
2909 Values include drand48, random, and rand. In C programs,
2910 the 'Drand01' macro is defined to generate uniformly distributed
2911 random numbers over the range [0., 1.[ (see drand01 and nrand).
2913 randseedtype (randfunc.U):
2914 Indicates the type of the argument of the seedfunc.
2916 ranlib (orderlib.U):
2917 This variable is set to the pathname of the ranlib program, if it is
2918 needed to generate random libraries. Set to ":" if ar can generate
2919 random libraries or if random libraries are not supported
2921 rd_nodata (nblock_io.U):
2922 This variable holds the return code from read() when no data is
2923 present. It should be -1, but some systems return 0 when O_NDELAY is
2924 used, which is a shame because you cannot make the difference between
2925 no data and an EOF.. Sigh!
2927 revision (patchlevel.U):
2928 The value of revision comes from the patchlevel.h file.
2929 In a version number such as 5.6.1, this is the "5".
2930 In patchlevel.h, this is referred to as "PERL_REVISION".
2933 This variable is used internally by Configure to determine the
2934 full pathname (if any) of the rm program. After Configure runs,
2935 the value is reset to a plain "rm" and is not useful.
2938 This variable is defined but not used by Configure.
2939 The value is a plain '' and is not useful.
2942 This variable contains 'true' or 'false' depending whether the
2943 nm extraction should be performed or not, according to the value
2944 of usenm and the flags on the Configure command line.
2946 sched_yield (d_pthread_y.U):
2947 This variable defines the way to yield the execution
2948 of the current thread.
2950 scriptdir (scriptdir.U):
2951 This variable holds the name of the directory in which the user wants
2952 to put publicly scripts for the package in question. It is either
2953 the same directory as for binaries, or a special one that can be
2954 mounted across different architectures, like /usr/share. Programs
2955 must be prepared to deal with ~name expansion.
2957 scriptdirexp (scriptdir.U):
2958 This variable is the same as scriptdir, but is filename expanded
2959 at configuration time, for programs not wanting to bother with it.
2962 This variable is used internally by Configure to determine the
2963 full pathname (if any) of the sed program. After Configure runs,
2964 the value is reset to a plain "sed" and is not useful.
2966 seedfunc (randfunc.U):
2967 Indicates the random number generating seed function.
2968 Values include srand48, srandom, and srand.
2970 selectminbits (selectminbits.U):
2971 This variable holds the minimum number of bits operated by select.
2972 That is, if you do select(n, ...), how many bits at least will be
2973 cleared in the masks if some activity is detected. Usually this
2974 is either n or 32*ceil(n/32), especially many little-endians do
2975 the latter. This is only useful if you have select(), naturally.
2977 selecttype (selecttype.U):
2978 This variable holds the type used for the 2nd, 3rd, and 4th
2979 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
2980 is defined, and 'int *' otherwise. This is only useful if you
2981 have select(), naturally.
2984 This variable is defined but not used by Configure.
2985 The value is a plain '' and is not useful.
2988 This variable contains the full pathname of the shell used
2989 on this system to execute Bourne shell scripts. Usually, this will be
2990 /bin/sh, though it's possible that some systems will have /bin/ksh,
2991 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
2993 This unit comes before Options.U, so you can't set sh with a '-D'
2994 option, though you can override this (and startsh)
2995 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
2998 This variable is defined but not used by Configure.
2999 The value is a plain '' and is not useful.
3001 sharpbang (spitshell.U):
3002 This variable contains the string #! if this system supports that
3005 shmattype (d_shmat.U):
3006 This symbol contains the type of pointer returned by shmat().
3007 It can be 'void *' or 'char *'.
3009 shortsize (intsize.U):
3010 This variable contains the value of the SHORTSIZE symbol which
3011 indicates to the C program how many bytes there are in a short.
3013 shrpenv (libperl.U):
3014 If the user builds a shared libperl.so, then we need to tell the
3015 'perl' executable where it will be able to find the installed libperl.so.
3016 One way to do this on some systems is to set the environment variable
3017 LD_RUN_PATH to the directory that will be the final location of the
3018 shared libperl.so. The makefile can use this with something like
3019 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3021 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3024 See the main perl Makefile.SH for actual working usage.
3025 Alternatively, we might be able to use a command line option such
3026 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3027 $archlibexp/CORE (Linux).
3029 shsharp (spitshell.U):
3030 This variable tells further Configure units whether your sh can
3033 sig_count (sig_name.U):
3034 This variable holds a number larger than the largest valid
3035 signal number. This is usually the same as the NSIG macro.
3037 sig_name (sig_name.U):
3038 This variable holds the signal names, space separated. The leading
3039 SIG in signal name is removed. A ZERO is prepended to the
3040 list. This is currently not used.
3042 sig_name_init (sig_name.U):
3043 This variable holds the signal names, enclosed in double quotes and
3044 separated by commas, suitable for use in the SIG_NAME definition
3045 below. A "ZERO" is prepended to the list, and the list is
3046 terminated with a plain 0. The leading SIG in signal names
3047 is removed. See sig_num.
3049 sig_num (sig_name.U):
3050 This variable holds the signal numbers, space separated. A ZERO is
3051 prepended to the list (corresponding to the fake SIGZERO), and
3052 the list is terminated with a 0. Those numbers correspond to
3053 the value of the signal listed in the same place within the
3056 sig_num_init (sig_name.U):
3057 This variable holds the signal numbers, enclosed in double quotes and
3058 separated by commas, suitable for use in the SIG_NUM definition
3059 below. A "ZERO" is prepended to the list, and the list is
3060 terminated with a plain 0.
3062 signal_t (d_voidsig.U):
3063 This variable holds the type of the signal handler (void or int).
3065 sitearch (sitearch.U):
3066 This variable contains the eventual value of the SITEARCH symbol,
3067 which is the name of the private library for this package. It may
3068 have a ~ on the front. It is up to the makefile to eventually create
3069 this directory while performing installation (with ~ substitution).
3070 The standard distribution will put nothing in this directory.
3071 After perl has been installed, users may install their own local
3072 architecture-dependent modules in this directory with
3073 MakeMaker Makefile.PL
3074 or equivalent. See INSTALL for details.
3076 sitearchexp (sitearch.U):
3077 This variable is the ~name expanded version of sitearch, so that you
3078 may use it directly in Makefiles or shell scripts.
3080 sitebin (sitebin.U):
3081 This variable holds the name of the directory in which the user wants
3082 to put add-on publicly executable files for the package in question. It
3083 is most often a local directory such as /usr/local/bin. Programs using
3084 this variable must be prepared to deal with ~name substitution.
3085 The standard distribution will put nothing in this directory.
3086 After perl has been installed, users may install their own local
3087 executables in this directory with
3088 MakeMaker Makefile.PL
3089 or equivalent. See INSTALL for details.
3091 sitebinexp (sitebin.U):
3092 This is the same as the sitebin variable, but is filename expanded at
3093 configuration time, for use in your makefiles.
3095 sitelib (sitelib.U):
3096 This variable contains the eventual value of the SITELIB symbol,
3097 which is the name of the private library for this package. It may
3098 have a ~ on the front. It is up to the makefile to eventually create
3099 this directory while performing installation (with ~ substitution).
3100 The standard distribution will put nothing in this directory.
3101 After perl has been installed, users may install their own local
3102 architecture-independent modules in this directory with
3103 MakeMaker Makefile.PL
3104 or equivalent. See INSTALL for details.
3106 sitelib_stem (sitelib.U):
3107 This variable is $sitelibexp with any trailing version-specific component
3108 removed. The elements in inc_version_list (inc_version_list.U) can
3109 be tacked onto this variable to generate a list of directories to search.
3111 sitelibexp (sitelib.U):
3112 This variable is the ~name expanded version of sitelib, so that you
3113 may use it directly in Makefiles or shell scripts.
3115 siteprefix (siteprefix.U):
3116 This variable holds the full absolute path of the directory below
3117 which the user will install add-on packages.
3118 See INSTALL for usage and examples.
3120 siteprefixexp (siteprefix.U):
3121 This variable holds the full absolute path of the directory below
3122 which the user will install add-on packages. Derived from siteprefix.
3124 sizesize (sizesize.U):
3125 This variable contains the size of a sizetype in bytes.
3127 sizetype (sizetype.U):
3128 This variable defines sizetype to be something like size_t,
3129 unsigned long, or whatever type is used to declare length
3130 parameters for string functions.
3133 This variable is defined but not used by Configure.
3134 The value is a plain '' and is not useful.
3137 This variable is defined but not used by Configure.
3138 The value is a plain '' and is not useful.
3141 This variable contains a flag which will tell the C compiler and loader
3142 to produce a program running with a small memory model. It is up to
3143 the Makefile to use this.
3146 This variable holds the extension used to identify shared libraries
3147 (also known as shared objects) on the system. Usually set to 'so'.
3149 sockethdr (d_socket.U):
3150 This variable has any cpp '-I' flags needed for socket support.
3152 socketlib (d_socket.U):
3153 This variable has the names of any libraries needed for socket support.
3155 socksizetype (socksizetype.U):
3156 This variable holds the type used for the size argument
3157 for various socket calls like accept. Usual values include
3158 socklen_t, size_t, and int.
3161 This variable is used internally by Configure to determine the
3162 full pathname (if any) of the sort program. After Configure runs,
3163 the value is reset to a plain "sort" and is not useful.
3165 spackage (package.U):
3166 This variable contains the name of the package being constructed,
3167 with the first letter uppercased, i.e. suitable for starting
3170 spitshell (spitshell.U):
3171 This variable contains the command necessary to spit out a runnable
3172 shell on this system. It is either cat or a grep '-v' for # comments.
3175 This variable contains a flag which will tell the C compiler and loader
3176 to produce a program that will run in separate I and D space, for those
3177 machines that support separation of instruction and data space. It is
3178 up to the Makefile to use this.
3180 sPRId64 (quadfio.U):
3181 This variable, if defined, contains the string used by stdio to
3182 format 64-bit decimal numbers (format 'd') 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 sPRIEldbl (longdblfio.U):
3189 This variable, if defined, contains the string used by stdio to
3190 format long doubles (format 'E') 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 sPRIFldbl (longdblfio.U):
3197 This variable, if defined, contains the string used by stdio to
3198 format long doubles (format 'F') 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 sPRIGldbl (longdblfio.U):
3205 This variable, if defined, contains the string used by stdio to
3206 format long doubles (format 'G') for output.
3208 sPRIi64 (quadfio.U):
3209 This variable, if defined, contains the string used by stdio to
3210 format 64-bit decimal numbers (format 'i') for output.
3212 sPRIo64 (quadfio.U):
3213 This variable, if defined, contains the string used by stdio to
3214 format 64-bit octal numbers (format 'o') for output.
3216 sPRIu64 (quadfio.U):
3217 This variable, if defined, contains the string used by stdio to
3218 format 64-bit unsigned decimal numbers (format 'u') 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.
3224 sPRIX64 (quadfio.U):
3225 This variable, if defined, contains the string used by stdio to
3226 format 64-bit hExADECimAl numbers (format 'X') for output.
3229 This variable holds the path to the package source. It is up to
3230 the Makefile to use this variable and set VPATH accordingly to
3231 find the sources remotely.
3233 ssizetype (ssizetype.U):
3234 This variable defines ssizetype to be something like ssize_t,
3235 long or int. It is used by functions that return a count
3236 of bytes or an error condition. It must be a signed type.
3237 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3239 startperl (startperl.U):
3240 This variable contains the string to put on the front of a perl
3241 script to make sure (hopefully) that it runs with perl and not some
3242 shell. Of course, that leading line must be followed by the classical
3244 eval 'exec perl -S $0 ${1+"$@"}'
3245 if $running_under_some_shell;
3246 to guarantee perl startup should the shell execute the script. Note
3247 that this magic incatation is not understood by csh.
3249 startsh (startsh.U):
3250 This variable contains the string to put on the front of a shell
3251 script to make sure (hopefully) that it runs with sh and not some
3254 static_ext (Extensions.U):
3255 This variable holds a list of XS extension files we want to
3256 link statically into the package. It is used by Makefile.
3258 stdchar (stdchar.U):
3259 This variable conditionally defines STDCHAR to be the type of char
3260 used in stdio.h. It has the values "unsigned char" or "char".
3262 stdio_base (d_stdstdio.U):
3263 This variable defines how, given a FILE pointer, fp, to access the
3264 _base field (or equivalent) of stdio.h's FILE structure. This will
3265 be used to define the macro FILE_base(fp).
3267 stdio_bufsiz (d_stdstdio.U):
3268 This variable defines how, given a FILE pointer, fp, to determine
3269 the number of bytes store in the I/O buffer pointer to by the
3270 _base field (or equivalent) of stdio.h's FILE structure. This will
3271 be used to define the macro FILE_bufsiz(fp).
3273 stdio_cnt (d_stdstdio.U):
3274 This variable defines how, given a FILE pointer, fp, to access the
3275 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3276 be used to define the macro FILE_cnt(fp).
3278 stdio_filbuf (d_stdstdio.U):
3279 This variable defines how, given a FILE pointer, fp, to tell
3280 stdio to refill it's internal buffers (?). This will
3281 be used to define the macro FILE_filbuf(fp).
3283 stdio_ptr (d_stdstdio.U):
3284 This variable defines how, given a FILE pointer, fp, to access the
3285 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3286 be used to define the macro FILE_ptr(fp).
3288 stdio_stream_array (stdio_streams.U):
3289 This variable tells the name of the array holding the stdio streams.
3290 Usual values include _iob, __iob, and __sF.
3292 strings (i_string.U):
3293 This variable holds the full path of the string header that will be
3294 used. Typically /usr/include/string.h or /usr/include/strings.h.
3297 This variable is defined but not used by Configure.
3298 The value is a plain '' and is not useful.
3300 subversion (patchlevel.U):
3301 The subversion level of this package.
3302 The value of subversion comes from the patchlevel.h file.
3303 In a version number such as 5.6.1, this is the "1".
3304 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3305 This is unique to perl.
3308 This variable holds the place where the manual is located on this
3309 system. It is not the place where the user wants to put his manual
3310 pages. Rather it is the place where Configure may look to find manual
3311 for unix commands (section 1 of the manual usually). See mansrc.
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 defined but not used by Configure.
3327 The value is a plain '' and is not useful.
3330 This variable is used internally by Configure to determine the
3331 full pathname (if any) of the test program. After Configure runs,
3332 the value is reset to a plain "test" and is not useful.
3334 timeincl (i_time.U):
3335 This variable holds the full path of the included time header(s).
3337 timetype (d_time.U):
3338 This variable holds the type returned by time(). It can be long,
3339 or time_t on BSD sites (in which case <sys/types.h> should be
3340 included). Anyway, the type Time_t should be used.
3343 This variable is used internally by Configure to determine the
3344 full pathname (if any) of the touch program. After Configure runs,
3345 the value is reset to a plain "touch" and is not useful.
3348 This variable is used internally by Configure to determine the
3349 full pathname (if any) of the tr program. After Configure runs,
3350 the value is reset to a plain "tr" and is not useful.
3353 This variable contains the value to be passed to the tr(1)
3354 command to transliterate a newline. Typical values are
3355 '\012' and '\n'. This is needed for EBCDIC systems where
3356 newline is not necessarily '\012'.
3359 This variable is defined but not used by Configure.
3360 The value is a plain '' and is not useful.
3363 This variable is the size of an U16 in bytes.
3366 This variable contains the C type used for Perl's U16.
3369 This variable is the size of an U32 in bytes.
3372 This variable contains the C type used for Perl's U32.
3375 This variable is the size of an U64 in bytes.
3378 This variable contains the C type used for Perl's U64.
3381 This variable is the size of an U8 in bytes.
3384 This variable contains the C type used for Perl's U8.
3387 This variable contains the format string used for printing a Uid_t.
3389 uidsign (uidsign.U):
3390 This variable contains the signedness of a uidtype.
3391 1 for unsigned, -1 for signed.
3393 uidsize (uidsize.U):
3394 This variable contains the size of a uidtype in bytes.
3396 uidtype (uidtype.U):
3397 This variable defines Uid_t to be something like uid_t, int,
3398 ushort, or whatever type is used to declare user ids in the kernel.
3401 This variable is used internally by Configure to determine the
3402 full pathname (if any) of the uname program. After Configure runs,
3403 the value is reset to a plain "uname" and is not useful.
3406 This variable is used internally by Configure to determine the
3407 full pathname (if any) of the uniq program. After Configure runs,
3408 the value is reset to a plain "uniq" and is not useful.
3410 uquadtype (quadtype.U):
3411 This variable defines Uquad_t to be something like unsigned long,
3412 unsigned int, unsigned long long, uint64_t, or whatever type is
3413 used for 64-bit integers.
3415 use5005threads (usethreads.U):
3416 This variable conditionally defines the USE_5005THREADS symbol,
3417 and indicates that Perl should be built to use the 5.005-based
3418 threading implementation.
3420 use64bitall (use64bits.U):
3421 This variable conditionally defines the USE_64_BIT_ALL symbol,
3422 and indicates that 64-bit integer types should be used
3423 when available. The maximal possible
3424 64-bitness is employed: LP64 or ILP64, meaning that you will
3425 be able to use more than 2 gigabytes of memory. This mode is
3426 even more binary incompatible than USE_64_BIT_INT. You may not
3427 be able to run the resulting executable in a 32-bit CPU at all or
3428 you may need at least to reboot your OS to 64-bit mode.
3430 use64bitint (use64bits.U):
3431 This variable conditionally defines the USE_64_BIT_INT symbol,
3432 and indicates that 64-bit integer types should be used
3433 when available. The minimal possible 64-bitness
3434 is employed, just enough to get 64-bit integers into Perl.
3435 This may mean using for example "long longs", while your memory
3436 may still be limited to 2 gigabytes.
3439 This variable indicates if the system supports dynamic
3440 loading of some sort. See also dlsrc and dlobj.
3442 useithreads (usethreads.U):
3443 This variable conditionally defines the USE_ITHREADS symbol,
3444 and indicates that Perl should be built to use the interpreter-based
3445 threading implementation.
3447 uselargefiles (uselfs.U):
3448 This variable conditionally defines the USE_LARGE_FILES symbol,
3449 and indicates that large file interfaces should be used when
3452 uselongdouble (uselongdbl.U):
3453 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3454 and indicates that long doubles should be used when available.
3456 usemorebits (usemorebits.U):
3457 This variable conditionally defines the USE_MORE_BITS symbol,
3458 and indicates that explicit 64-bit interfaces and long doubles
3459 should be used when available.
3461 usemultiplicity (usemultiplicity.U):
3462 This variable conditionally defines the MULTIPLICITY symbol,
3463 and indicates that Perl should be built to use multiplicity.
3465 usemymalloc (mallocsrc.U):
3466 This variable contains y if the malloc that comes with this package
3467 is desired over the system's version of malloc. People often include
3468 special versions of malloc for effiency, but such versions are often
3469 less portable. See also mallocsrc and mallocobj.
3470 If this is 'y', then -lmalloc is removed from $libs.
3473 This variable contains 'true' or 'false' depending whether the
3474 nm extraction is wanted or not.
3476 useopcode (Extensions.U):
3477 This variable holds either 'true' or 'false' to indicate
3478 whether the Opcode extension should be used. The sole
3479 use for this currently is to allow an easy mechanism
3480 for users to skip the Opcode extension from the Configure
3483 useperlio (useperlio.U):
3484 This variable conditionally defines the USE_PERLIO symbol,
3485 and indicates that the PerlIO abstraction should be
3488 useposix (Extensions.U):
3489 This variable holds either 'true' or 'false' to indicate
3490 whether the POSIX extension should be used. The sole
3491 use for this currently is to allow an easy mechanism
3492 for hints files to indicate that POSIX will not compile
3493 on a particular system.
3496 This variable is set to true when the user agrees to use sfio.
3497 It is set to false when sfio is not available or when the user
3498 explicitely requests not to use sfio. It is here primarily so
3499 that command-line settings can override the auto-detection of
3500 d_sfio without running into a "WHOA THERE".
3502 useshrplib (libperl.U):
3503 This variable is set to 'yes' if the user wishes
3504 to build a shared libperl, and 'no' otherwise.
3506 usesocks (usesocks.U):
3507 This variable conditionally defines the USE_SOCKS symbol,
3508 and indicates that Perl should be built to use SOCKS.
3510 usethreads (usethreads.U):
3511 This variable conditionally defines the USE_THREADS symbol,
3512 and indicates that Perl should be built to use threads.
3514 usevendorprefix (vendorprefix.U):
3515 This variable tells whether the vendorprefix
3516 and consequently other vendor* paths are in use.
3518 usevfork (d_vfork.U):
3519 This variable is set to true when the user accepts to use vfork.
3520 It is set to false when no vfork is available or when the user
3521 explicitely requests not to use vfork.
3524 This variable holds the path of the include files, which is
3525 usually /usr/include. It is mainly used by other Configure units.
3528 This variable is defined but not used by Configure.
3529 The value is a plain '' and is not useful.
3531 uvoformat (perlxvf.U):
3532 This variable contains the format string used for printing
3533 a Perl UV as an unsigned octal integer.
3536 This variable is the size of a UV in bytes.
3539 This variable contains the C type used for Perl's UV.
3541 uvuformat (perlxvf.U):
3542 This variable contains the format string used for printing
3543 a Perl UV as an unsigned decimal integer.
3545 uvxformat (perlxvf.U):
3546 This variable contains the format string used for printing
3547 a Perl UV as an unsigned hexadecimal integer.
3549 vendorarch (vendorarch.U):
3550 This variable contains the value of the PERL_VENDORARCH symbol.
3551 It may have a ~ on the front.
3552 The standard distribution will put nothing in this directory.
3553 Vendors who distribute perl may wish to place their own
3554 architecture-dependent modules and extensions in this directory with
3555 MakeMaker Makefile.PL INSTALLDIRS=vendor
3556 or equivalent. See INSTALL for details.
3558 vendorarchexp (vendorarch.U):
3559 This variable is the ~name expanded version of vendorarch, so that you
3560 may use it directly in Makefiles or shell scripts.
3562 vendorbin (vendorbin.U):
3563 This variable contains the eventual value of the VENDORBIN symbol.
3564 It may have a ~ on the front.
3565 The standard distribution will put nothing in this directory.
3566 Vendors who distribute perl may wish to place additional
3567 binaries in this directory with
3568 MakeMaker Makefile.PL INSTALLDIRS=vendor
3569 or equivalent. See INSTALL for details.
3571 vendorbinexp (vendorbin.U):
3572 This variable is the ~name expanded version of vendorbin, so that you
3573 may use it directly in Makefiles or shell scripts.
3575 vendorlib (vendorlib.U):
3576 This variable contains the eventual value of the VENDORLIB symbol,
3577 which is the name of the private library for this package.
3578 The standard distribution will put nothing in this directory.
3579 Vendors who distribute perl may wish to place their own
3580 modules in this directory with
3581 MakeMaker Makefile.PL INSTALLDIRS=vendor
3582 or equivalent. See INSTALL for details.
3584 vendorlib_stem (vendorlib.U):
3585 This variable is $vendorlibexp with any trailing version-specific component
3586 removed. The elements in inc_version_list (inc_version_list.U) can
3587 be tacked onto this variable to generate a list of directories to search.
3589 vendorlibexp (vendorlib.U):
3590 This variable is the ~name expanded version of vendorlib, so that you
3591 may use it directly in Makefiles or shell scripts.
3593 vendorprefix (vendorprefix.U):
3594 This variable holds the full absolute path of the directory below
3595 which the vendor will install add-on packages.
3596 See INSTALL for usage and examples.
3598 vendorprefixexp (vendorprefix.U):
3599 This variable holds the full absolute path of the directory below
3600 which the vendor will install add-on packages. Derived from vendorprefix.
3602 version (patchlevel.U):
3603 The full version number of this package, such as 5.6.1 (or 5_6_1).
3604 This combines revision, patchlevel, and subversion to get the
3605 full version number, including any possible subversions.
3606 This is suitable for use as a directory name, and hence is
3607 filesystem dependent.
3610 This variable is defined but not used by Configure.
3611 The value is a plain '' and is not useful.
3613 voidflags (voidflags.U):
3614 This variable contains the eventual value of the VOIDFLAGS symbol,
3615 which indicates how much support of the void type is given by this
3616 compiler. See VOIDFLAGS for more info.
3619 This variable holds extra path (space-separated) used to find
3620 libraries on this platform, for example CPU-specific libraries
3621 (on multi-CPU platforms) may be listed here.
3623 xs_apiversion (xs_apiversion.U):
3624 This variable contains the version of the oldest perl binary
3625 compatible with the present perl. perl.c:incpush() and
3626 lib/lib.pm will automatically search in $sitearch for older
3627 directories across major versions back to xs_apiversion.
3628 This is only useful if you have a perl library directory tree
3629 structured like the default one.
3630 See INSTALL for how this works.
3631 The versioned site_perl directory was introduced in 5.005,
3632 so that is the lowest possible value.
3633 Since this can depend on compile time options (such as
3634 bincompat) it is set by Configure. Other non-default sources
3635 of potential incompatibility, such as multiplicity, threads,
3636 debugging, 64bits, sfio, etc., are not checked for currently,
3637 though in principle we could go snooping around in old
3641 This variable is defined but not used by Configure.
3642 The value is a plain '' and is not useful.
3645 This variable is used internally by Configure to determine the
3646 full pathname (if any) of the zip program. After Configure runs,
3647 the value is reset to a plain "zip" and is not useful.