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_endspent (d_endspent.U):
510 This variable conditionally defines HAS_ENDSPENT if endspent() is
511 available to finalize the scan of SysV shadow password entries.
513 d_eofnblk (nblock_io.U):
514 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
515 when reading from a non-blocking I/O source.
518 This variable conditionally defines the symbols EUNICE and VAX, which
519 alerts the C program that it must deal with ideosyncracies of VMS.
521 d_fchmod (d_fchmod.U):
522 This variable conditionally defines the HAS_FCHMOD symbol, which
523 indicates to the C program that the fchmod() routine is available
524 to change mode of opened files.
526 d_fchown (d_fchown.U):
527 This variable conditionally defines the HAS_FCHOWN symbol, which
528 indicates to the C program that the fchown() routine is available
529 to change ownership of opened files.
532 This variable conditionally defines the HAS_FCNTL symbol, and indicates
533 whether the fcntl() function exists
535 d_fd_macros (d_fd_set.U):
536 This variable contains the eventual value of the HAS_FD_MACROS symbol,
537 which indicates if your C compiler knows about the macros which
538 manipulate an fd_set.
540 d_fd_set (d_fd_set.U):
541 This variable contains the eventual value of the HAS_FD_SET symbol,
542 which indicates if your C compiler knows about the fd_set typedef.
544 d_fds_bits (d_fd_set.U):
545 This variable contains the eventual value of the HAS_FDS_BITS symbol,
546 which indicates if your fd_set typedef contains the fds_bits member.
547 If you have an fd_set typedef, but the dweebs who installed it did
548 a half-fast job and neglected to provide the macros to manipulate
549 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
551 d_fgetpos (d_fgetpos.U):
552 This variable conditionally defines HAS_FGETPOS if fgetpos() is
553 available to get the file position indicator.
555 d_flexfnam (d_flexfnam.U):
556 This variable conditionally defines the FLEXFILENAMES symbol, which
557 indicates that the system supports filenames longer than 14 characters.
560 This variable conditionally defines HAS_FLOCK if flock() is
561 available to do file locking.
564 This variable conditionally defines the HAS_FORK symbol, which
565 indicates to the C program that the fork() routine is available.
567 d_fpathconf (d_pathconf.U):
568 This variable conditionally defines the HAS_FPATHCONF symbol, which
569 indicates to the C program that the pathconf() routine is available
570 to determine file-system related limits and options associated
571 with a given open file descriptor.
573 d_fpos64_t (d_fpos64_t.U):
574 This symbol will be defined if the C compiler supports fpos64_t.
576 d_frexpl (d_frexpl.U):
577 This variable conditionally defines the HAS_FREXPL symbol, which
578 indicates to the C program that the frexpl() routine is available.
580 d_fs_data_s (d_fs_data_s.U):
581 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
582 which indicates that the struct fs_data is supported.
584 d_fseeko (d_fseeko.U):
585 This variable conditionally defines the HAS_FSEEKO symbol, which
586 indicates to the C program that the fseeko() routine is available.
588 d_fsetpos (d_fsetpos.U):
589 This variable conditionally defines HAS_FSETPOS if fsetpos() is
590 available to set the file position indicator.
592 d_fstatfs (d_fstatfs.U):
593 This variable conditionally defines the HAS_FSTATFS symbol, which
594 indicates to the C program that the fstatfs() routine is available.
596 d_fstatvfs (d_statvfs.U):
597 This variable conditionally defines the HAS_FSTATVFS symbol, which
598 indicates to the C program that the fstatvfs() routine is available.
600 d_ftello (d_ftello.U):
601 This variable conditionally defines the HAS_FTELLO symbol, which
602 indicates to the C program that the ftello() routine is available.
605 This variable conditionally defines the HAS_FTIME symbol, which indicates
606 that the ftime() routine exists. The ftime() routine is basically
607 a sub-second accuracy clock.
609 d_Gconvert (d_gconvert.U):
610 This variable holds what Gconvert is defined as to convert
611 floating point numbers into strings. It could be 'gconvert'
612 or a more complex macro emulating gconvert with gcvt() or sprintf.
614 d_Gconvert='gconvert((x),(n),(t),(b))'
615 d_Gconvert='gcvt((x),(n),(b))'
616 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
618 d_getcwd (d_getcwd.U):
619 This variable conditionally defines the HAS_GETCWD symbol, which
620 indicates to the C program that the getcwd() routine is available
621 to get the current working directory.
623 d_getfsstat (d_getfsstat.U):
624 This variable conditionally defines the HAS_GETFSSTAT symbol, which
625 indicates to the C program that the getfsstat() routine is available.
627 d_getgrent (d_getgrent.U):
628 This variable conditionally defines the HAS_GETGRENT symbol, which
629 indicates to the C program that the getgrent() routine is available
630 for sequential access of the group database.
632 d_getgrps (d_getgrps.U):
633 This variable conditionally defines the HAS_GETGROUPS symbol, which
634 indicates to the C program that the getgroups() routine is available
635 to get the list of process groups.
637 d_gethbyaddr (d_gethbyad.U):
638 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
639 indicates to the C program that the gethostbyaddr() routine is available
640 to look up hosts by their IP addresses.
642 d_gethbyname (d_gethbynm.U):
643 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
644 indicates to the C program that the gethostbyname() routine is available
645 to look up host names in some data base or other.
647 d_gethent (d_gethent.U):
648 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
649 available to look up host names in some data base or another.
651 d_gethname (d_gethname.U):
652 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
653 indicates to the C program that the gethostname() routine may be
654 used to derive the host name.
656 d_gethostprotos (d_gethostprotos.U):
657 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
658 which indicates to the C program that <netdb.h> supplies
659 prototypes for the various gethost*() functions.
660 See also netdbtype.U for probing for various netdb types.
662 d_getlogin (d_getlogin.U):
663 This variable conditionally defines the HAS_GETLOGIN symbol, which
664 indicates to the C program that the getlogin() routine is available
665 to get the login name.
667 d_getmnt (d_getmnt.U):
668 This variable conditionally defines the HAS_GETMNT symbol, which
669 indicates to the C program that the getmnt() routine is available
670 to retrieve one or more mount info blocks by filename.
672 d_getmntent (d_getmntent.U):
673 This variable conditionally defines the HAS_GETMNTENT symbol, which
674 indicates to the C program that the getmntent() routine is available
675 to iterate through mounted files to get their mount info.
677 d_getnbyaddr (d_getnbyad.U):
678 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
679 indicates to the C program that the getnetbyaddr() routine is available
680 to look up networks by their IP addresses.
682 d_getnbyname (d_getnbynm.U):
683 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
684 indicates to the C program that the getnetbyname() routine is available
685 to look up networks by their names.
687 d_getnent (d_getnent.U):
688 This variable conditionally defines HAS_GETNETENT if getnetent() is
689 available to look up network names in some data base or another.
691 d_getnetprotos (d_getnetprotos.U):
692 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
693 which indicates to the C program that <netdb.h> supplies
694 prototypes for the various getnet*() functions.
695 See also netdbtype.U for probing for various netdb types.
697 d_getpbyname (d_getprotby.U):
698 This variable conditionally defines the HAS_GETPROTOBYNAME
699 symbol, which indicates to the C program that the
700 getprotobyname() routine is available to look up protocols
703 d_getpbynumber (d_getprotby.U):
704 This variable conditionally defines the HAS_GETPROTOBYNUMBER
705 symbol, which indicates to the C program that the
706 getprotobynumber() routine is available to look up protocols
709 d_getpent (d_getpent.U):
710 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
711 available to look up protocols in some data base or another.
713 d_getpgid (d_getpgid.U):
714 This variable conditionally defines the HAS_GETPGID symbol, which
715 indicates to the C program that the getpgid(pid) function
716 is available to get the process group id.
718 d_getpgrp2 (d_getpgrp2.U):
719 This variable conditionally defines the HAS_GETPGRP2 symbol, which
720 indicates to the C program that the getpgrp2() (as in DG/UX) routine
721 is available to get the current process group.
723 d_getpgrp (d_getpgrp.U):
724 This variable conditionally defines HAS_GETPGRP if getpgrp() is
725 available to get the current process group.
727 d_getppid (d_getppid.U):
728 This variable conditionally defines the HAS_GETPPID symbol, which
729 indicates to the C program that the getppid() routine is available
730 to get the parent process ID.
732 d_getprior (d_getprior.U):
733 This variable conditionally defines HAS_GETPRIORITY if getpriority()
734 is available to get a process's priority.
736 d_getprotoprotos (d_getprotoprotos.U):
737 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
738 which indicates to the C program that <netdb.h> supplies
739 prototypes for the various getproto*() functions.
740 See also netdbtype.U for probing for various netdb types.
742 d_getpwent (d_getpwent.U):
743 This variable conditionally defines the HAS_GETPWENT symbol, which
744 indicates to the C program that the getpwent() routine is available
745 for sequential access of the passwd database.
747 d_getsbyname (d_getsrvby.U):
748 This variable conditionally defines the HAS_GETSERVBYNAME
749 symbol, which indicates to the C program that the
750 getservbyname() routine is available to look up services
753 d_getsbyport (d_getsrvby.U):
754 This variable conditionally defines the HAS_GETSERVBYPORT
755 symbol, which indicates to the C program that the
756 getservbyport() routine is available to look up services
759 d_getsent (d_getsent.U):
760 This variable conditionally defines HAS_GETSERVENT if getservent() is
761 available to look up network services in some data base or another.
763 d_getservprotos (d_getservprotos.U):
764 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
765 which indicates to the C program that <netdb.h> supplies
766 prototypes for the various getserv*() functions.
767 See also netdbtype.U for probing for various netdb types.
769 d_getspent (d_getspent.U):
770 This variable conditionally defines HAS_GETSPENT if getspent() is
771 available to retrieve SysV shadow password entries sequentially.
773 d_getspnam (d_getspnam.U):
774 This variable conditionally defines HAS_GETSPNAM if getspnam() is
775 available to retrieve SysV shadow password entries by name.
777 d_gettimeod (d_ftime.U):
778 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
779 indicates that the gettimeofday() system call exists (to obtain a
780 sub-second accuracy clock). You should probably include <sys/resource.h>.
782 d_gnulibc (d_gnulibc.U):
783 Defined if we're dealing with the GNU C Library.
785 d_grpasswd (i_grp.U):
786 This variable conditionally defines GRPASSWD, which indicates
787 that struct group in <grp.h> contains gr_passwd.
789 d_hasmntopt (d_hasmntopt.U):
790 This variable conditionally defines the HAS_HASMNTOPT symbol, which
791 indicates to the C program that the hasmntopt() routine is available
792 to query the mount options of file systems.
795 This variable conditionally defines HAS_HTONL if htonl() and its
796 friends are available to do network order byte swapping.
799 This variable conditionally defines the HAS_ICONV symbol, which
800 indicates to the C program that the iconv() routine is available.
802 d_index (d_strchr.U):
803 This variable conditionally defines HAS_INDEX if index() and
804 rindex() are available for string searching.
806 d_inetaton (d_inetaton.U):
807 This variable conditionally defines the HAS_INET_ATON symbol, which
808 indicates to the C program that the inet_aton() function is available
809 to parse IP address "dotted-quad" strings.
811 d_int64_t (d_int64_t.U):
812 This symbol will be defined if the C compiler supports int64_t.
814 d_isascii (d_isascii.U):
815 This variable conditionally defines the HAS_ISASCII constant,
816 which indicates to the C program that isascii() is available.
819 This variable conditionally defines the HAS_ISNAN symbol, which
820 indicates to the C program that the isnan() routine is available.
822 d_isnanl (d_isnanl.U):
823 This variable conditionally defines the HAS_ISNANL symbol, which
824 indicates to the C program that the isnanl() routine is available.
826 d_killpg (d_killpg.U):
827 This variable conditionally defines the HAS_KILLPG symbol, which
828 indicates to the C program that the killpg() routine is available
829 to kill process groups.
831 d_lchown (d_lchown.U):
832 This variable conditionally defines the HAS_LCHOWN symbol, which
833 indicates to the C program that the lchown() routine is available
834 to operate on a symbolic link (instead of following the link).
836 d_ldbl_dig (d_ldbl_dig.U):
837 This variable conditionally defines d_ldbl_dig if this system's
838 header files provide LDBL_DIG, which is the number of significant
839 digits in a long double precision number.
842 This variable conditionally defines HAS_LINK if link() is
843 available to create hard links.
845 d_locconv (d_locconv.U):
846 This variable conditionally defines HAS_LOCALECONV if localeconv() is
847 available for numeric and monetary formatting conventions.
850 This variable conditionally defines HAS_LOCKF if lockf() is
851 available to do file locking.
853 d_longdbl (d_longdbl.U):
854 This variable conditionally defines HAS_LONG_DOUBLE if
855 the long double type is supported.
857 d_longlong (d_longlong.U):
858 This variable conditionally defines HAS_LONG_LONG if
859 the long long type is supported.
861 d_lseekproto (d_lseekproto.U):
862 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
863 which indicates to the C program that the system provides
864 a prototype for the lseek() function. Otherwise, it is
865 up to the program to supply one.
868 This variable conditionally defines HAS_LSTAT if lstat() is
869 available to do file stats on symbolic links.
871 d_madvise (d_madvise.U):
872 This variable conditionally defines HAS_MADVISE if madvise() is
873 available to map a file into memory.
876 This variable conditionally defines the HAS_MBLEN symbol, which
877 indicates to the C program that the mblen() routine is available
878 to find the number of bytes in a multibye character.
880 d_mbstowcs (d_mbstowcs.U):
881 This variable conditionally defines the HAS_MBSTOWCS symbol, which
882 indicates to the C program that the mbstowcs() routine is available
883 to convert a multibyte string into a wide character string.
885 d_mbtowc (d_mbtowc.U):
886 This variable conditionally defines the HAS_MBTOWC symbol, which
887 indicates to the C program that the mbtowc() routine is available
888 to convert multibyte to a wide character.
890 d_memchr (d_memchr.U):
891 This variable conditionally defines the HAS_MEMCHR symbol, which
892 indicates to the C program that the memchr() routine is available
893 to locate characters within a C string.
895 d_memcmp (d_memcmp.U):
896 This variable conditionally defines the HAS_MEMCMP symbol, which
897 indicates to the C program that the memcmp() routine is available
898 to compare blocks of memory.
900 d_memcpy (d_memcpy.U):
901 This variable conditionally defines the HAS_MEMCPY symbol, which
902 indicates to the C program that the memcpy() routine is available
903 to copy blocks of memory.
905 d_memmove (d_memmove.U):
906 This variable conditionally defines the HAS_MEMMOVE symbol, which
907 indicates to the C program that the memmove() routine is available
908 to copy potentatially overlapping blocks of memory.
910 d_memset (d_memset.U):
911 This variable conditionally defines the HAS_MEMSET symbol, which
912 indicates to the C program that the memset() routine is available
913 to set blocks of memory.
916 This variable conditionally defines the HAS_MKDIR symbol, which
917 indicates to the C program that the mkdir() routine is available
918 to create directories..
920 d_mkdtemp (d_mkdtemp.U):
921 This variable conditionally defines the HAS_MKDTEMP symbol, which
922 indicates to the C program that the mkdtemp() routine is available
923 to exclusively create a uniquely named temporary directory.
925 d_mkfifo (d_mkfifo.U):
926 This variable conditionally defines the HAS_MKFIFO symbol, which
927 indicates to the C program that the mkfifo() routine is available.
929 d_mkstemp (d_mkstemp.U):
930 This variable conditionally defines the HAS_MKSTEMP symbol, which
931 indicates to the C program that the mkstemp() routine is available
932 to exclusively create and open a uniquely named temporary file.
934 d_mkstemps (d_mkstemps.U):
935 This variable conditionally defines the HAS_MKSTEMPS symbol, which
936 indicates to the C program that the mkstemps() routine is available
937 to exclusively create and open a uniquely named (with a suffix)
940 d_mktime (d_mktime.U):
941 This variable conditionally defines the HAS_MKTIME symbol, which
942 indicates to the C program that the mktime() routine is available.
945 This variable conditionally defines HAS_MMAP if mmap() is
946 available to map a file into memory.
949 This variable conditionally defines the HAS_MODFL symbol, which
950 indicates to the C program that the modfl() routine is available.
952 d_mprotect (d_mprotect.U):
953 This variable conditionally defines HAS_MPROTECT if mprotect() is
954 available to modify the access protection of a memory mapped file.
957 This variable conditionally defines the HAS_MSG symbol, which
958 indicates that the entire msg*(2) library is present.
960 d_msg_ctrunc (d_socket.U):
961 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
962 which indicates that the MSG_CTRUNC is available. #ifdef is
963 not enough because it may be an enum, glibc has been known to do this.
965 d_msg_dontroute (d_socket.U):
966 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
967 which indicates that the MSG_DONTROUTE is available. #ifdef is
968 not enough because it may be an enum, glibc has been known to do this.
970 d_msg_oob (d_socket.U):
971 This variable conditionally defines the HAS_MSG_OOB symbol,
972 which indicates that the MSG_OOB is available. #ifdef is
973 not enough because it may be an enum, glibc has been known to do this.
975 d_msg_peek (d_socket.U):
976 This variable conditionally defines the HAS_MSG_PEEK symbol,
977 which indicates that the MSG_PEEK is available. #ifdef is
978 not enough because it may be an enum, glibc has been known to do this.
980 d_msg_proxy (d_socket.U):
981 This variable conditionally defines the HAS_MSG_PROXY symbol,
982 which indicates that the MSG_PROXY is available. #ifdef is
983 not enough because it may be an enum, glibc has been known to do this.
985 d_msgctl (d_msgctl.U):
986 This variable conditionally defines the HAS_MSGCTL symbol, which
987 indicates to the C program that the msgctl() routine is available.
989 d_msgget (d_msgget.U):
990 This variable conditionally defines the HAS_MSGGET symbol, which
991 indicates to the C program that the msgget() routine is available.
993 d_msgrcv (d_msgrcv.U):
994 This variable conditionally defines the HAS_MSGRCV symbol, which
995 indicates to the C program that the msgrcv() routine is available.
997 d_msgsnd (d_msgsnd.U):
998 This variable conditionally defines the HAS_MSGSND symbol, which
999 indicates to the C program that the msgsnd() routine is available.
1001 d_msync (d_msync.U):
1002 This variable conditionally defines HAS_MSYNC if msync() is
1003 available to synchronize a mapped file.
1005 d_munmap (d_munmap.U):
1006 This variable conditionally defines HAS_MUNMAP if munmap() is
1007 available to unmap a region mapped by mmap().
1009 d_mymalloc (mallocsrc.U):
1010 This variable conditionally defines MYMALLOC in case other parts
1011 of the source want to take special action if MYMALLOC is used.
1012 This may include different sorts of profiling or error detection.
1015 This variable conditionally defines the HAS_NICE symbol, which
1016 indicates to the C program that the nice() routine is available.
1018 d_nv_preserves_uv (perlxv.U):
1019 This variable indicates whether a variable of type nvtype
1020 can preserve all the bits a variable of type uvtype.
1022 d_off64_t (d_off64_t.U):
1023 This symbol will be defined if the C compiler supports off64_t.
1025 d_old_pthread_create_joinable (d_pthrattrj.U):
1026 This variable conditionally defines pthread_create_joinable.
1027 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1029 d_oldpthreads (usethreads.U):
1030 This variable conditionally defines the OLD_PTHREADS_API symbol,
1031 and indicates that Perl should be built to use the old
1032 draft POSIX threads API. This is only potentially meaningful if
1035 d_oldsock (d_socket.U):
1036 This variable conditionally defines the OLDSOCKET symbol, which
1037 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1039 d_open3 (d_open3.U):
1040 This variable conditionally defines the HAS_OPEN3 manifest constant,
1041 which indicates to the C program that the 3 argument version of
1042 the open(2) function is available.
1044 d_pathconf (d_pathconf.U):
1045 This variable conditionally defines the HAS_PATHCONF symbol, which
1046 indicates to the C program that the pathconf() routine is available
1047 to determine file-system related limits and options associated
1048 with a given filename.
1050 d_pause (d_pause.U):
1051 This variable conditionally defines the HAS_PAUSE symbol, which
1052 indicates to the C program that the pause() routine is available
1053 to suspend a process until a signal is received.
1055 d_phostname (d_gethname.U):
1056 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1057 contains the shell command which, when fed to popen(), may be
1058 used to derive the host name.
1061 This variable conditionally defines the HAS_PIPE symbol, which
1062 indicates to the C program that the pipe() routine is available
1063 to create an inter-process channel.
1066 This variable conditionally defines the HAS_POLL symbol, which
1067 indicates to the C program that the poll() routine is available
1068 to poll active file descriptors.
1070 d_portable (d_portable.U):
1071 This variable conditionally defines the PORTABLE symbol, which
1072 indicates to the C program that it should not assume that it is
1073 running on the machine it was compiled on.
1075 d_PRId64 (quadfio.U):
1076 This variable conditionally defines the PERL_PRId64 symbol, which
1077 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1079 d_PRIeldbl (longdblfio.U):
1080 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1081 indiciates that stdio has a symbol to print long doubles.
1083 d_PRIEldbl (longdblfio.U):
1084 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1085 indiciates that stdio has a symbol to print long doubles.
1087 d_PRIfldbl (longdblfio.U):
1088 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1089 indiciates that stdio has a symbol to print long doubles.
1091 d_PRIFldbl (longdblfio.U):
1092 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1093 indiciates that stdio has a symbol to print long doubles.
1095 d_PRIgldbl (longdblfio.U):
1096 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1097 indiciates that stdio has a symbol to print long doubles.
1099 d_PRIGldbl (longdblfio.U):
1100 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1101 indiciates that stdio has a symbol to print long doubles.
1103 d_PRIi64 (quadfio.U):
1104 This variable conditionally defines the PERL_PRIi64 symbol, which
1105 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1107 d_PRIo64 (quadfio.U):
1108 This variable conditionally defines the PERL_PRIo64 symbol, which
1109 indiciates that stdio has a symbol to print 64-bit octal numbers.
1111 d_PRIu64 (quadfio.U):
1112 This variable conditionally defines the PERL_PRIu64 symbol, which
1113 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1116 d_PRIx64 (quadfio.U):
1117 This variable conditionally defines the PERL_PRIx64 symbol, which
1118 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1120 d_PRIX64 (quadfio.U):
1121 This variable conditionally defines the PERL_PRIX64 symbol, which
1122 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1124 d_pthread_yield (d_pthread_y.U):
1125 This variable conditionally defines the HAS_PTHREAD_YIELD
1126 symbol if the pthread_yield routine is available to yield
1127 the execution of the current thread.
1130 This variable conditionally defines PWAGE, which indicates
1131 that struct passwd contains pw_age.
1133 d_pwchange (i_pwd.U):
1134 This variable conditionally defines PWCHANGE, which indicates
1135 that struct passwd contains pw_change.
1137 d_pwclass (i_pwd.U):
1138 This variable conditionally defines PWCLASS, which indicates
1139 that struct passwd contains pw_class.
1141 d_pwcomment (i_pwd.U):
1142 This variable conditionally defines PWCOMMENT, which indicates
1143 that struct passwd contains pw_comment.
1145 d_pwexpire (i_pwd.U):
1146 This variable conditionally defines PWEXPIRE, which indicates
1147 that struct passwd contains pw_expire.
1149 d_pwgecos (i_pwd.U):
1150 This variable conditionally defines PWGECOS, which indicates
1151 that struct passwd contains pw_gecos.
1153 d_pwpasswd (i_pwd.U):
1154 This variable conditionally defines PWPASSWD, which indicates
1155 that struct passwd contains pw_passwd.
1157 d_pwquota (i_pwd.U):
1158 This variable conditionally defines PWQUOTA, which indicates
1159 that struct passwd contains pw_quota.
1161 d_qgcvt (d_qgcvt.U):
1162 This variable conditionally defines the HAS_QGCVT symbol, which
1163 indicates to the C program that the qgcvt() routine is available.
1165 d_quad (quadtype.U):
1166 This variable, if defined, tells that there's a 64-bit integer type,
1169 d_readdir (d_readdir.U):
1170 This variable conditionally defines HAS_READDIR if readdir() is
1171 available to read directory entries.
1173 d_readlink (d_readlink.U):
1174 This variable conditionally defines the HAS_READLINK symbol, which
1175 indicates to the C program that the readlink() routine is available
1176 to read the value of a symbolic link.
1178 d_rename (d_rename.U):
1179 This variable conditionally defines the HAS_RENAME symbol, which
1180 indicates to the C program that the rename() routine is available
1183 d_rewinddir (d_readdir.U):
1184 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1187 d_rmdir (d_rmdir.U):
1188 This variable conditionally defines HAS_RMDIR if rmdir() is
1189 available to remove directories.
1191 d_safebcpy (d_safebcpy.U):
1192 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1193 the bcopy() routine can do overlapping copies.
1195 d_safemcpy (d_safemcpy.U):
1196 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1197 the memcpy() routine can do overlapping copies.
1199 d_sanemcmp (d_sanemcmp.U):
1200 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1201 the memcpy() routine is available and can be used to compare relative
1202 magnitudes of chars with their high bits set.
1204 d_sched_yield (d_pthread_y.U):
1205 This variable conditionally defines the HAS_SCHED_YIELD
1206 symbol if the sched_yield routine is available to yield
1207 the execution of the current thread.
1209 d_scm_rights (d_socket.U):
1210 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1211 which indicates that the SCM_RIGHTS is available. #ifdef is
1212 not enough because it may be an enum, glibc has been known to do this.
1214 d_seekdir (d_readdir.U):
1215 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1218 d_select (d_select.U):
1219 This variable conditionally defines HAS_SELECT if select() is
1220 available to select active file descriptors. A <sys/time.h>
1221 inclusion may be necessary for the timeout field.
1224 This variable conditionally defines the HAS_SEM symbol, which
1225 indicates that the entire sem*(2) library is present.
1227 d_semctl (d_semctl.U):
1228 This variable conditionally defines the HAS_SEMCTL symbol, which
1229 indicates to the C program that the semctl() routine is available.
1231 d_semctl_semid_ds (d_union_semun.U):
1232 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1233 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1235 d_semctl_semun (d_union_semun.U):
1236 This variable conditionally defines USE_SEMCTL_SEMUN, which
1237 indicates that union semun is to be used for semctl IPC_STAT.
1239 d_semget (d_semget.U):
1240 This variable conditionally defines the HAS_SEMGET symbol, which
1241 indicates to the C program that the semget() routine is available.
1243 d_semop (d_semop.U):
1244 This variable conditionally defines the HAS_SEMOP symbol, which
1245 indicates to the C program that the semop() routine is available.
1247 d_setegid (d_setegid.U):
1248 This variable conditionally defines the HAS_SETEGID symbol, which
1249 indicates to the C program that the setegid() routine is available
1250 to change the effective gid of the current program.
1252 d_seteuid (d_seteuid.U):
1253 This variable conditionally defines the HAS_SETEUID symbol, which
1254 indicates to the C program that the seteuid() routine is available
1255 to change the effective uid of the current program.
1257 d_setgrent (d_setgrent.U):
1258 This variable conditionally defines the HAS_SETGRENT symbol, which
1259 indicates to the C program that the setgrent() routine is available
1260 for initializing sequential access to the group database.
1262 d_setgrps (d_setgrps.U):
1263 This variable conditionally defines the HAS_SETGROUPS symbol, which
1264 indicates to the C program that the setgroups() routine is available
1265 to set the list of process groups.
1267 d_sethent (d_sethent.U):
1268 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1271 d_setlinebuf (d_setlnbuf.U):
1272 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1273 indicates to the C program that the setlinebuf() routine is available
1274 to change stderr or stdout from block-buffered or unbuffered to a
1277 d_setlocale (d_setlocale.U):
1278 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1279 available to handle locale-specific ctype implementations.
1281 d_setnent (d_setnent.U):
1282 This variable conditionally defines HAS_SETNETENT if setnetent() is
1285 d_setpent (d_setpent.U):
1286 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1289 d_setpgid (d_setpgid.U):
1290 This variable conditionally defines the HAS_SETPGID symbol if the
1291 setpgid(pid, gpid) function is available to set process group ID.
1293 d_setpgrp2 (d_setpgrp2.U):
1294 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1295 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1296 is available to set the current process group.
1298 d_setpgrp (d_setpgrp.U):
1299 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1300 available to set the current process group.
1302 d_setprior (d_setprior.U):
1303 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1304 is available to set a process's priority.
1306 d_setpwent (d_setpwent.U):
1307 This variable conditionally defines the HAS_SETPWENT symbol, which
1308 indicates to the C program that the setpwent() routine is available
1309 for initializing sequential access to the passwd database.
1311 d_setregid (d_setregid.U):
1312 This variable conditionally defines HAS_SETREGID if setregid() is
1313 available to change the real and effective gid of the current
1316 d_setresgid (d_setregid.U):
1317 This variable conditionally defines HAS_SETRESGID if setresgid() is
1318 available to change the real, effective and saved gid of the current
1321 d_setresuid (d_setreuid.U):
1322 This variable conditionally defines HAS_SETREUID if setresuid() is
1323 available to change the real, effective and saved uid of the current
1326 d_setreuid (d_setreuid.U):
1327 This variable conditionally defines HAS_SETREUID if setreuid() is
1328 available to change the real and effective uid of the current
1331 d_setrgid (d_setrgid.U):
1332 This variable conditionally defines the HAS_SETRGID symbol, which
1333 indicates to the C program that the setrgid() routine is available
1334 to change the real gid of the current program.
1336 d_setruid (d_setruid.U):
1337 This variable conditionally defines the HAS_SETRUID symbol, which
1338 indicates to the C program that the setruid() routine is available
1339 to change the real uid of the current program.
1341 d_setsent (d_setsent.U):
1342 This variable conditionally defines HAS_SETSERVENT if setservent() is
1345 d_setsid (d_setsid.U):
1346 This variable conditionally defines HAS_SETSID if setsid() is
1347 available to set the process group ID.
1349 d_setspent (d_setspent.U):
1350 This variable conditionally defines HAS_SETSPENT if setspent() is
1351 available to initialize the scan of SysV shadow password entries.
1353 d_setvbuf (d_setvbuf.U):
1354 This variable conditionally defines the HAS_SETVBUF symbol, which
1355 indicates to the C program that the setvbuf() routine is available
1356 to change buffering on an open stdio stream.
1359 This variable conditionally defines the USE_SFIO symbol,
1360 and indicates whether sfio is available (and should be used).
1363 This variable conditionally defines the HAS_SHM symbol, which
1364 indicates that the entire shm*(2) library is present.
1366 d_shmat (d_shmat.U):
1367 This variable conditionally defines the HAS_SHMAT symbol, which
1368 indicates to the C program that the shmat() routine is available.
1370 d_shmatprototype (d_shmat.U):
1371 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1372 symbol, which indicates that sys/shm.h has a prototype for
1375 d_shmctl (d_shmctl.U):
1376 This variable conditionally defines the HAS_SHMCTL symbol, which
1377 indicates to the C program that the shmctl() routine is available.
1379 d_shmdt (d_shmdt.U):
1380 This variable conditionally defines the HAS_SHMDT symbol, which
1381 indicates to the C program that the shmdt() routine is available.
1383 d_shmget (d_shmget.U):
1384 This variable conditionally defines the HAS_SHMGET symbol, which
1385 indicates to the C program that the shmget() routine is available.
1387 d_sigaction (d_sigaction.U):
1388 This variable conditionally defines the HAS_SIGACTION symbol, which
1389 indicates that the Vr4 sigaction() routine is available.
1391 d_sigsetjmp (d_sigsetjmp.U):
1392 This variable conditionally defines the HAS_SIGSETJMP symbol,
1393 which indicates that the sigsetjmp() routine is available to
1394 call setjmp() and optionally save the process's signal mask.
1396 d_socket (d_socket.U):
1397 This variable conditionally defines HAS_SOCKET, which indicates
1398 that the BSD socket interface is supported.
1400 d_socklen_t (d_socklen_t.U):
1401 This symbol will be defined if the C compiler supports socklen_t.
1403 d_sockpair (d_socket.U):
1404 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1405 indicates that the BSD socketpair() is supported.
1407 d_sqrtl (d_sqrtl.U):
1408 This variable conditionally defines the HAS_SQRTL symbol, which
1409 indicates to the C program that the sqrtl() routine is available.
1411 d_statblks (d_statblks.U):
1412 This variable conditionally defines USE_STAT_BLOCKS
1413 if this system has a stat structure declaring
1414 st_blksize and st_blocks.
1416 d_statfs_f_flags (d_statfs_f_flags.U):
1417 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1418 symbol, which indicates to struct statfs from has f_flags member.
1419 This kind of struct statfs is coming from sys/mount.h (BSD),
1420 not from sys/statfs.h (SYSV).
1422 d_statfs_s (d_statfs_s.U):
1423 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1424 which indicates that the struct statfs is supported.
1426 d_statvfs (d_statvfs.U):
1427 This variable conditionally defines the HAS_STATVFS symbol, which
1428 indicates to the C program that the statvfs() routine is available.
1430 d_stdio_cnt_lval (d_stdstdio.U):
1431 This variable conditionally defines STDIO_CNT_LVALUE if the
1432 FILE_cnt macro can be used as an lvalue.
1434 d_stdio_ptr_lval (d_stdstdio.U):
1435 This variable conditionally defines STDIO_PTR_LVALUE if the
1436 FILE_ptr macro can be used as an lvalue.
1438 d_stdio_stream_array (stdio_streams.U):
1439 This variable tells whether there is an array holding
1442 d_stdiobase (d_stdstdio.U):
1443 This variable conditionally defines USE_STDIO_BASE if this system
1444 has a FILE structure declaring a usable _base field (or equivalent)
1447 d_stdstdio (d_stdstdio.U):
1448 This variable conditionally defines USE_STDIO_PTR if this system
1449 has a FILE structure declaring usable _ptr and _cnt fields (or
1450 equivalent) in stdio.h.
1452 d_strchr (d_strchr.U):
1453 This variable conditionally defines HAS_STRCHR if strchr() and
1454 strrchr() are available for string searching.
1456 d_strcoll (d_strcoll.U):
1457 This variable conditionally defines HAS_STRCOLL if strcoll() is
1458 available to compare strings using collating information.
1460 d_strctcpy (d_strctcpy.U):
1461 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1462 indicates to the C program that this C compiler knows how to copy
1465 d_strerrm (d_strerror.U):
1466 This variable holds what Strerrr is defined as to translate an error
1467 code condition into an error message string. It could be 'strerror'
1468 or a more complex macro emulating strrror with sys_errlist[], or the
1469 "unknown" string when both strerror and sys_errlist are missing.
1471 d_strerror (d_strerror.U):
1472 This variable conditionally defines HAS_STRERROR if strerror() is
1473 available to translate error numbers to strings.
1475 d_strtod (d_strtod.U):
1476 This variable conditionally defines the HAS_STRTOD symbol, which
1477 indicates to the C program that the strtod() routine is available
1478 to provide better numeric string conversion than atof().
1480 d_strtol (d_strtol.U):
1481 This variable conditionally defines the HAS_STRTOL symbol, which
1482 indicates to the C program that the strtol() routine is available
1483 to provide better numeric string conversion than atoi() and friends.
1485 d_strtold (d_strtold.U):
1486 This variable conditionally defines the HAS_STRTOLD symbol, which
1487 indicates to the C program that the strtold() routine is available.
1489 d_strtoll (d_strtoll.U):
1490 This variable conditionally defines the HAS_STRTOLL symbol, which
1491 indicates to the C program that the strtoll() routine is available.
1493 d_strtoul (d_strtoul.U):
1494 This variable conditionally defines the HAS_STRTOUL symbol, which
1495 indicates to the C program that the strtoul() routine is available
1496 to provide conversion of strings to unsigned long.
1498 d_strtoull (d_strtoull.U):
1499 This variable conditionally defines the HAS_STRTOULL symbol, which
1500 indicates to the C program that the strtoull() routine is available.
1502 d_strtouq (d_strtouq.U):
1503 This variable conditionally defines the HAS_STRTOUQ symbol, which
1504 indicates to the C program that the strtouq() routine is available.
1506 d_strxfrm (d_strxfrm.U):
1507 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1508 available to transform strings.
1510 d_suidsafe (d_dosuid.U):
1511 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1512 if setuid scripts can be secure. This test looks in /dev/fd/.
1514 d_symlink (d_symlink.U):
1515 This variable conditionally defines the HAS_SYMLINK symbol, which
1516 indicates to the C program that the symlink() routine is available
1517 to create symbolic links.
1519 d_syscall (d_syscall.U):
1520 This variable conditionally defines HAS_SYSCALL if syscall() is
1521 available call arbitrary system calls.
1523 d_sysconf (d_sysconf.U):
1524 This variable conditionally defines the HAS_SYSCONF symbol, which
1525 indicates to the C program that the sysconf() routine is available
1526 to determine system related limits and options.
1528 d_sysernlst (d_strerror.U):
1529 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1530 is available to translate error numbers to the symbolic name.
1532 d_syserrlst (d_strerror.U):
1533 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1534 available to translate error numbers to strings.
1536 d_system (d_system.U):
1537 This variable conditionally defines HAS_SYSTEM if system() is
1538 available to issue a shell command.
1540 d_tcgetpgrp (d_tcgtpgrp.U):
1541 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1542 indicates to the C program that the tcgetpgrp() routine is available.
1543 to get foreground process group ID.
1545 d_tcsetpgrp (d_tcstpgrp.U):
1546 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1547 indicates to the C program that the tcsetpgrp() routine is available
1548 to set foreground process group ID.
1550 d_telldir (d_readdir.U):
1551 This variable conditionally defines HAS_TELLDIR if telldir() is
1554 d_telldirproto (d_telldirproto.U):
1555 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1556 which indicates to the C program that the system provides
1557 a prototype for the telldir() function. Otherwise, it is
1558 up to the program to supply one.
1561 This variable conditionally defines the HAS_TIME symbol, which indicates
1562 that the time() routine exists. The time() routine is normaly
1563 provided on UNIX systems.
1565 d_times (d_times.U):
1566 This variable conditionally defines the HAS_TIMES symbol, which indicates
1567 that the times() routine exists. The times() routine is normaly
1568 provided on UNIX systems. You may have to include <sys/times.h>.
1570 d_truncate (d_truncate.U):
1571 This variable conditionally defines HAS_TRUNCATE if truncate() is
1572 available to truncate files.
1574 d_tzname (d_tzname.U):
1575 This variable conditionally defines HAS_TZNAME if tzname[] is
1576 available to access timezone names.
1578 d_umask (d_umask.U):
1579 This variable conditionally defines the HAS_UMASK symbol, which
1580 indicates to the C program that the umask() routine is available.
1581 to set and get the value of the file creation mask.
1583 d_uname (d_gethname.U):
1584 This variable conditionally defines the HAS_UNAME symbol, which
1585 indicates to the C program that the uname() routine may be
1586 used to derive the host name.
1588 d_union_semun (d_union_semun.U):
1589 This variable conditionally defines HAS_UNION_SEMUN if the
1590 union semun is defined by including <sys/sem.h>.
1592 d_ustat (d_ustat.U):
1593 This variable conditionally defines HAS_USTAT if ustat() is
1594 available to query file system statistics by dev_t.
1596 d_vendorarch (vendorarch.U):
1597 This variable conditionally defined PERL_VENDORARCH.
1599 d_vendorbin (vendorbin.U):
1600 This variable conditionally defines PERL_VENDORBIN.
1602 d_vendorlib (vendorlib.U):
1603 This variable conditionally defines PERL_VENDORLIB.
1605 d_vfork (d_vfork.U):
1606 This variable conditionally defines the HAS_VFORK symbol, which
1607 indicates the vfork() routine is available.
1609 d_void_closedir (d_closedir.U):
1610 This variable conditionally defines VOID_CLOSEDIR if closedir()
1611 does not return a value.
1613 d_voidsig (d_voidsig.U):
1614 This variable conditionally defines VOIDSIG if this system
1615 declares "void (*signal(...))()" in signal.h. The old way was to
1616 declare it as "int (*signal(...))()".
1618 d_voidtty (i_sysioctl.U):
1619 This variable conditionally defines USE_IOCNOTTY to indicate that the
1620 ioctl() call with TIOCNOTTY should be used to void tty association.
1621 Otherwise (on USG probably), it is enough to close the standard file
1622 decriptors and do a setpgrp().
1624 d_volatile (d_volatile.U):
1625 This variable conditionally defines the HASVOLATILE symbol, which
1626 indicates to the C program that this C compiler knows about the
1627 volatile declaration.
1629 d_vprintf (d_vprintf.U):
1630 This variable conditionally defines the HAS_VPRINTF symbol, which
1631 indicates to the C program that the vprintf() routine is available
1632 to printf with a pointer to an argument list.
1634 d_wait4 (d_wait4.U):
1635 This variable conditionally defines the HAS_WAIT4 symbol, which
1636 indicates the wait4() routine is available.
1638 d_waitpid (d_waitpid.U):
1639 This variable conditionally defines HAS_WAITPID if waitpid() is
1640 available to wait for child process.
1642 d_wcstombs (d_wcstombs.U):
1643 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1644 indicates to the C program that the wcstombs() routine is available
1645 to convert wide character strings to multibyte strings.
1647 d_wctomb (d_wctomb.U):
1648 This variable conditionally defines the HAS_WCTOMB symbol, which
1649 indicates to the C program that the wctomb() routine is available
1650 to convert a wide character to a multibyte.
1653 This variable conditionally defines the symbol XENIX, which alerts
1654 the C program that it runs under Xenix.
1657 This variable is used internally by Configure to determine the
1658 full pathname (if any) of the date program. After Configure runs,
1659 the value is reset to a plain "date" and is not useful.
1661 db_hashtype (i_db.U):
1662 This variable contains the type of the hash structure element
1663 in the <db.h> header file. In older versions of DB, it was
1664 int, while in newer ones it is u_int32_t.
1666 db_prefixtype (i_db.U):
1667 This variable contains the type of the prefix structure element
1668 in the <db.h> header file. In older versions of DB, it was
1669 int, while in newer ones it is size_t.
1671 defvoidused (voidflags.U):
1672 This variable contains the default value of the VOIDUSED symbol (15).
1674 direntrytype (i_dirent.U):
1675 This symbol is set to 'struct direct' or 'struct dirent' depending on
1676 whether dirent is available or not. You should use this pseudo type to
1677 portably declare your directory entries.
1680 This variable contains the extension that is to be used for the
1681 dynamically loaded modules that perl generaties.
1684 This variable contains the name of the dynamic loading file that
1685 will be used with the package.
1687 doublesize (doublesize.U):
1688 This variable contains the value of the DOUBLESIZE symbol, which
1689 indicates to the C program how many bytes there are in a double.
1691 drand01 (randfunc.U):
1692 Indicates the macro to be used to generate normalized
1693 random numbers. Uses randfunc, often divided by
1694 (double) (((unsigned long) 1 << randbits)) in order to
1695 normalize the result.
1696 In C programs, the macro 'Drand01' is mapped to drand01.
1698 dynamic_ext (Extensions.U):
1699 This variable holds a list of XS extension files we want to
1700 link dynamically into the package. It is used by Makefile.
1702 eagain (nblock_io.U):
1703 This variable bears the symbolic errno code set by read() when no
1704 data is present on the file and non-blocking I/O was enabled (otherwise,
1705 read() blocks naturally).
1708 This variable conditionally defines EBCDIC if this
1709 system uses EBCDIC encoding. Among other things, this
1710 means that the character ranges are not contiguous.
1714 This variable is used internally by Configure to determine the
1715 full pathname (if any) of the echo program. After Configure runs,
1716 the value is reset to a plain "echo" and is not useful.
1719 This variable is used internally by Configure to determine the
1720 full pathname (if any) of the egrep program. After Configure runs,
1721 the value is reset to a plain "egrep" and is not useful.
1724 This variable is defined but not used by Configure.
1725 The value is a plain '' and is not useful.
1728 When running under Eunice this variable contains a command which will
1729 convert a shell script to the proper form of text file for it to be
1730 executable by the shell. On other systems it is a no-op.
1733 This is an old synonym for _exe.
1736 This variable is used internally by Configure to determine the
1737 full pathname (if any) of the expr program. After Configure runs,
1738 the value is reset to a plain "expr" and is not useful.
1740 extensions (Extensions.U):
1741 This variable holds a list of all extension files (both XS and
1742 non-xs linked into the package. It is propagated to Config.pm
1743 and is typically used to test whether a particular extesion
1746 fflushall (fflushall.U):
1747 This symbol, if defined, tells that to flush
1748 all pending stdio output one must loop through all
1749 the stdio file handles stored in an array and fflush them.
1750 Note that if fflushNULL is defined, fflushall will not
1751 even be probed for and will be left undefined.
1753 fflushNULL (fflushall.U):
1754 This symbol, if defined, tells that fflush(NULL) does flush
1755 all pending stdio output.
1758 This variable is defined but not used by Configure.
1759 The value is a plain '' and is not useful.
1761 firstmakefile (Unix.U):
1762 This variable defines the first file searched by make. On unix,
1763 it is makefile (then Makefile). On case-insensitive systems,
1764 it might be something else. This is only used to deal with
1765 convoluted make depend tricks.
1768 This variable is defined but not used by Configure.
1769 The value is a plain '' and is not useful.
1771 fpossize (fpossize.U):
1772 This variable contains the size of a fpostype in bytes.
1774 fpostype (fpostype.U):
1775 This variable defines Fpos_t to be something like fpos_t, long,
1776 uint, or whatever type is used to declare file positions in libc.
1778 freetype (mallocsrc.U):
1779 This variable contains the return type of free(). It is usually
1780 void, but occasionally int.
1783 This variable contains the full pathname to 'ar', whether or
1784 not the user has specified 'portability'. This is only used
1788 This variable contains the full pathname to 'csh', whether or
1789 not the user has specified 'portability'. This is only used
1790 in the compiled C program, and we assume that all systems which
1791 can share this executable will have the same full pathname to
1794 full_sed (Loc_sed.U):
1795 This variable contains the full pathname to 'sed', whether or
1796 not the user has specified 'portability'. This is only used
1797 in the compiled C program, and we assume that all systems which
1798 can share this executable will have the same full pathname to
1802 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1803 indicate whether the compiler is version 1 or 2. This is used in
1804 setting some of the default cflags. It is set to '' if not gcc.
1807 This variable contains the format string used for printing a Gid_t.
1809 gidsign (gidsign.U):
1810 This variable contains the signedness of a gidtype.
1811 1 for unsigned, -1 for signed.
1813 gidsize (gidsize.U):
1814 This variable contains the size of a gidtype in bytes.
1816 gidtype (gidtype.U):
1817 This variable defines Gid_t to be something like gid_t, int,
1818 ushort, or whatever type is used to declare the return type
1819 of getgid(). Typically, it is the type of group ids in the kernel.
1822 This variable holds the general path (space-separated) used to
1823 find libraries. It may contain directories that do not exist on
1824 this platform, libpth is the cleaned-up version.
1827 This variable is used internally by Configure to determine the
1828 full pathname (if any) of the grep program. After Configure runs,
1829 the value is reset to a plain "grep" and is not useful.
1832 This variable contains a command that produces the text of the
1833 /etc/group file. This is normally "cat /etc/group", but can be
1834 "ypcat group" when NIS is used.
1835 On some systems, such as os390, there may be no equivalent
1836 command, in which case this variable is unset.
1838 groupstype (groupstype.U):
1839 This variable defines Groups_t to be something like gid_t, int,
1840 ushort, or whatever type is used for the second argument to
1841 getgroups() and setgroups(). Usually, this is the same as
1842 gidtype (gid_t), but sometimes it isn't.
1845 This variable is used internally by Configure to determine the
1846 full pathname (if any) of the gzip program. After Configure runs,
1847 the value is reset to a plain "gzip" and is not useful.
1849 h_fcntl (h_fcntl.U):
1850 This is variable gets set in various places to tell i_fcntl that
1851 <fcntl.h> should be included.
1853 h_sysfile (h_sysfile.U):
1854 This is variable gets set in various places to tell i_sys_file that
1855 <sys/file.h> should be included.
1858 Gives the type of hints used for previous answers. May be one of
1859 "default", "recommended" or "previous".
1862 This variable contains a command that produces the text of the
1863 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1864 "ypcat hosts" when NIS is used.
1865 On some systems, such as os390, there may be no equivalent
1866 command, in which case this variable is unset.
1869 This variable contains a flag which will tell the C compiler and loader
1870 to produce a program running with a huge memory model. If the
1871 huge model is not supported, contains the flag to produce large
1872 model programs. It is up to the Makefile to use this.
1875 This variable is the size of an I16 in bytes.
1878 This variable contains the C type used for Perl's I16.
1881 This variable is the size of an I32 in bytes.
1884 This variable contains the C type used for Perl's I32.
1887 This variable is the size of an I64 in bytes.
1890 This variable contains the C type used for Perl's I64.
1893 This variable is the size of an I8 in bytes.
1896 This variable contains the C type used for Perl's I8.
1898 i_arpainet (i_arpainet.U):
1899 This variable conditionally defines the I_ARPA_INET symbol,
1900 and indicates whether a C program should include <arpa/inet.h>.
1902 i_bsdioctl (i_sysioctl.U):
1903 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1904 indicates to the C program that <sys/bsdioctl.h> exists and should
1908 This variable conditionally defines the I_DB symbol, and indicates
1909 whether a C program may include Berkeley's DB include file <db.h>.
1912 This variable conditionally defines the I_DBM symbol, which
1913 indicates to the C program that <dbm.h> exists and should
1916 i_dirent (i_dirent.U):
1917 This variable conditionally defines I_DIRENT, which indicates
1918 to the C program that it should include <dirent.h>.
1921 This variable conditionally defines the I_DLD symbol, which
1922 indicates to the C program that <dld.h> (GNU dynamic loading)
1923 exists and should be included.
1925 i_dlfcn (i_dlfcn.U):
1926 This variable conditionally defines the I_DLFCN symbol, which
1927 indicates to the C program that <dlfcn.h> exists and should
1930 i_fcntl (i_fcntl.U):
1931 This variable controls the value of I_FCNTL (which tells
1932 the C program to include <fcntl.h>).
1934 i_float (i_float.U):
1935 This variable conditionally defines the I_FLOAT symbol, and indicates
1936 whether a C program may include <float.h> to get symbols like DBL_MAX
1937 or DBL_MIN, i.e. machine dependent floating point values.
1940 This variable conditionally defines the I_GDBM symbol, which
1941 indicates to the C program that <gdbm.h> exists and should
1945 This variable conditionally defines the I_GRP symbol, and indicates
1946 whether a C program should include <grp.h>.
1948 i_iconv (i_iconv.U):
1949 This variable conditionally defines the I_ICONV symbol, and indicates
1950 whether a C program should include <iconv.h>.
1952 i_ieeefp (i_ieeefp.U):
1953 This variable conditionally defines the I_IEEEFP symbol, and indicates
1954 whether a C program should include <ieeefp.h>.
1956 i_inttypes (i_inttypes.U):
1957 This variable conditionally defines the I_INTTYPES symbol,
1958 and indicates whether a C program should include <inttypes.h>.
1960 i_limits (i_limits.U):
1961 This variable conditionally defines the I_LIMITS symbol, and indicates
1962 whether a C program may include <limits.h> to get symbols like WORD_BIT
1965 i_locale (i_locale.U):
1966 This variable conditionally defines the I_LOCALE symbol,
1967 and indicates whether a C program should include <locale.h>.
1969 i_machcthr (i_machcthr.U):
1970 This variable conditionally defines the I_MACH_CTHREADS symbol,
1971 and indicates whether a C program should include <mach/cthreads.h>.
1973 i_malloc (i_malloc.U):
1974 This variable conditionally defines the I_MALLOC symbol, and indicates
1975 whether a C program should include <malloc.h>.
1978 This variable conditionally defines the I_MATH symbol, and indicates
1979 whether a C program may include <math.h>.
1981 i_memory (i_memory.U):
1982 This variable conditionally defines the I_MEMORY symbol, and indicates
1983 whether a C program should include <memory.h>.
1985 i_mntent (i_mntent.U):
1986 This variable conditionally defines the I_MNTENT symbol, and indicates
1987 whether a C program should include <mntent.h>.
1990 This variable conditionally defines the I_NDBM symbol, which
1991 indicates to the C program that <ndbm.h> exists and should
1994 i_netdb (i_netdb.U):
1995 This variable conditionally defines the I_NETDB symbol, and indicates
1996 whether a C program should include <netdb.h>.
1998 i_neterrno (i_neterrno.U):
1999 This variable conditionally defines the I_NET_ERRNO symbol, which
2000 indicates to the C program that <net/errno.h> exists and should
2003 i_netinettcp (i_netinettcp.U):
2004 This variable conditionally defines the I_NETINET_TCP symbol,
2005 and indicates whether a C program should include <netinet/tcp.h>.
2008 This variable conditionally defines I_NETINET_IN, which indicates
2009 to the C program that it should include <netinet/in.h>. Otherwise,
2010 you may try <sys/in.h>.
2013 This variable conditionally defines the I_POLL symbol, and indicates
2014 whether a C program should include <poll.h>.
2016 i_pthread (i_pthread.U):
2017 This variable conditionally defines the I_PTHREAD symbol,
2018 and indicates whether a C program should include <pthread.h>.
2021 This variable conditionally defines I_PWD, which indicates
2022 to the C program that it should include <pwd.h>.
2024 i_rpcsvcdbm (i_dbm.U):
2025 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2026 indicates to the C program that <rpcsvc/dbm.h> exists and should
2027 be included. Some System V systems might need this instead of <dbm.h>.
2030 This variable conditionally defines the I_SFIO symbol,
2031 and indicates whether a C program should include <sfio.h>.
2033 i_sgtty (i_termio.U):
2034 This variable conditionally defines the I_SGTTY symbol, which
2035 indicates to the C program that it should include <sgtty.h> rather
2038 i_shadow (i_shadow.U):
2039 This variable conditionally defines the I_SHADOW symbol, and indicates
2040 whether a C program should include <shadow.h>.
2042 i_socks (i_socks.U):
2043 This variable conditionally defines the I_SOCKS symbol, and indicates
2044 whether a C program should include <socks.h>.
2046 i_stdarg (i_varhdr.U):
2047 This variable conditionally defines the I_STDARG symbol, which
2048 indicates to the C program that <stdarg.h> exists and should
2051 i_stddef (i_stddef.U):
2052 This variable conditionally defines the I_STDDEF symbol, which
2053 indicates to the C program that <stddef.h> exists and should
2056 i_stdlib (i_stdlib.U):
2057 This variable conditionally defines the I_STDLIB symbol, which
2058 indicates to the C program that <stdlib.h> exists and should
2061 i_string (i_string.U):
2062 This variable conditionally defines the I_STRING symbol, which
2063 indicates that <string.h> should be included rather than <strings.h>.
2065 i_sunmath (i_sunmath.U):
2066 This variable conditionally defines the I_SUNMATH symbol, and indicates
2067 whether a C program should include <sunmath.h>.
2069 i_sysaccess (i_sysaccess.U):
2070 This variable conditionally defines the I_SYS_ACCESS symbol,
2071 and indicates whether a C program should include <sys/access.h>.
2073 i_sysdir (i_sysdir.U):
2074 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2075 whether a C program should include <sys/dir.h>.
2077 i_sysfile (i_sysfile.U):
2078 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2079 whether a C program should include <sys/file.h> to get R_OK and friends.
2081 i_sysfilio (i_sysioctl.U):
2082 This variable conditionally defines the I_SYS_FILIO symbol, which
2083 indicates to the C program that <sys/filio.h> exists and should
2084 be included in preference to <sys/ioctl.h>.
2087 This variable conditionally defines I_SYS_IN, which indicates
2088 to the C program that it should include <sys/in.h> instead of
2091 i_sysioctl (i_sysioctl.U):
2092 This variable conditionally defines the I_SYS_IOCTL symbol, which
2093 indicates to the C program that <sys/ioctl.h> exists and should
2096 i_syslog (i_syslog.U):
2097 This variable conditionally defines the I_SYSLOG symbol,
2098 and indicates whether a C program should include <syslog.h>.
2100 i_sysmman (i_sysmman.U):
2101 This variable conditionally defines the I_SYS_MMAN symbol, and
2102 indicates whether a C program should include <sys/mman.h>.
2104 i_sysmode (i_sysmode.U):
2105 This variable conditionally defines the I_SYSMODE symbol,
2106 and indicates whether a C program should include <sys/mode.h>.
2108 i_sysmount (i_sysmount.U):
2109 This variable conditionally defines the I_SYSMOUNT symbol,
2110 and indicates whether a C program should include <sys/mount.h>.
2112 i_sysndir (i_sysndir.U):
2113 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2114 whether a C program should include <sys/ndir.h>.
2116 i_sysparam (i_sysparam.U):
2117 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2118 whether a C program should include <sys/param.h>.
2120 i_sysresrc (i_sysresrc.U):
2121 This variable conditionally defines the I_SYS_RESOURCE symbol,
2122 and indicates whether a C program should include <sys/resource.h>.
2124 i_syssecrt (i_syssecrt.U):
2125 This variable conditionally defines the I_SYS_SECURITY symbol,
2126 and indicates whether a C program should include <sys/security.h>.
2128 i_sysselct (i_sysselct.U):
2129 This variable conditionally defines I_SYS_SELECT, which indicates
2130 to the C program that it should include <sys/select.h> in order to
2131 get the definition of struct timeval.
2133 i_syssockio (i_sysioctl.U):
2134 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2135 C program that socket ioctl codes may be found in <sys/sockio.h>
2136 instead of <sys/ioctl.h>.
2138 i_sysstat (i_sysstat.U):
2139 This variable conditionally defines the I_SYS_STAT symbol,
2140 and indicates whether a C program should include <sys/stat.h>.
2142 i_sysstatfs (i_sysstatfs.U):
2143 This variable conditionally defines the I_SYSSTATFS symbol,
2144 and indicates whether a C program should include <sys/statfs.h>.
2146 i_sysstatvfs (i_sysstatvfs.U):
2147 This variable conditionally defines the I_SYSSTATVFS symbol,
2148 and indicates whether a C program should include <sys/statvfs.h>.
2150 i_systime (i_time.U):
2151 This variable conditionally defines I_SYS_TIME, which indicates
2152 to the C program that it should include <sys/time.h>.
2154 i_systimek (i_time.U):
2155 This variable conditionally defines I_SYS_TIME_KERNEL, which
2156 indicates to the C program that it should include <sys/time.h>
2157 with KERNEL defined.
2159 i_systimes (i_systimes.U):
2160 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2161 whether a C program should include <sys/times.h>.
2163 i_systypes (i_systypes.U):
2164 This variable conditionally defines the I_SYS_TYPES symbol,
2165 and indicates whether a C program should include <sys/types.h>.
2167 i_sysuio (i_sysuio.U):
2168 This variable conditionally defines the I_SYSUIO symbol, and indicates
2169 whether a C program should include <sys/uio.h>.
2171 i_sysun (i_sysun.U):
2172 This variable conditionally defines I_SYS_UN, which indicates
2173 to the C program that it should include <sys/un.h> to get UNIX
2174 domain socket definitions.
2176 i_sysutsname (i_sysutsname.U):
2177 This variable conditionally defines the I_SYSUTSNAME symbol,
2178 and indicates whether a C program should include <sys/utsname.h>.
2180 i_sysvfs (i_sysvfs.U):
2181 This variable conditionally defines the I_SYSVFS symbol,
2182 and indicates whether a C program should include <sys/vfs.h>.
2184 i_syswait (i_syswait.U):
2185 This variable conditionally defines I_SYS_WAIT, which indicates
2186 to the C program that it should include <sys/wait.h>.
2188 i_termio (i_termio.U):
2189 This variable conditionally defines the I_TERMIO symbol, which
2190 indicates to the C program that it should include <termio.h> rather
2193 i_termios (i_termio.U):
2194 This variable conditionally defines the I_TERMIOS symbol, which
2195 indicates to the C program that the POSIX <termios.h> file is
2199 This variable conditionally defines I_TIME, which indicates
2200 to the C program that it should include <time.h>.
2202 i_unistd (i_unistd.U):
2203 This variable conditionally defines the I_UNISTD symbol, and indicates
2204 whether a C program should include <unistd.h>.
2206 i_ustat (i_ustat.U):
2207 This variable conditionally defines the I_USTAT symbol, and indicates
2208 whether a C program should include <ustat.h>.
2210 i_utime (i_utime.U):
2211 This variable conditionally defines the I_UTIME symbol, and indicates
2212 whether a C program should include <utime.h>.
2214 i_values (i_values.U):
2215 This variable conditionally defines the I_VALUES symbol, and indicates
2216 whether a C program may include <values.h> to get symbols like MAXLONG
2219 i_varargs (i_varhdr.U):
2220 This variable conditionally defines I_VARARGS, which indicates
2221 to the C program that it should include <varargs.h>.
2223 i_varhdr (i_varhdr.U):
2224 Contains the name of the header to be included to get va_dcl definition.
2225 Typically one of varargs.h or stdarg.h.
2227 i_vfork (i_vfork.U):
2228 This variable conditionally defines the I_VFORK symbol, and indicates
2229 whether a C program should include vfork.h.
2231 ignore_versioned_solibs (libs.U):
2232 This variable should be non-empty if non-versioned shared
2233 libraries (libfoo.so.x.y) are to be ignored (because they
2234 cannot be linked against).
2236 inc_version_list (inc_version_list.U):
2237 This variable specifies the list of subdirectories in over
2238 which perl.c:incpush() and lib/lib.pm will automatically
2239 search when adding directories to @INC. The elements in
2240 the list are separated by spaces. This is only useful
2241 if you have a perl library directory tree structured like the
2242 default one. See INSTALL for how this works. The versioned
2243 site_perl directory was introduced in 5.005, so that is the
2244 lowest possible value.
2246 inc_version_list_init (inc_version_list.U):
2247 This variable holds the same list as inc_version_list, but
2248 each item is enclosed in double quotes and separated by commas,
2249 suitable for use in the PERL_INC_VERSION_LIST initialization.
2252 This variable must preceed the normal include path to get hte
2253 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2254 Value can be "" or "/bsd43" on mips.
2257 This variable is defined but not used by Configure.
2258 The value is a plain '' and is not useful.
2260 installarchlib (archlib.U):
2261 This variable is really the same as archlibexp but may differ on
2262 those systems using AFS. For extra portability, only this variable
2263 should be used in makefiles.
2266 This variable is the same as binexp unless AFS is running in which case
2267 the user is explicitely prompted for it. This variable should always
2268 be used in your makefiles for maximum portability.
2270 installman1dir (man1dir.U):
2271 This variable is really the same as man1direxp, unless you are using
2272 AFS in which case it points to the read/write location whereas
2273 man1direxp only points to the read-only access location. For extra
2274 portability, you should only use this variable within your makefiles.
2276 installman3dir (man3dir.U):
2277 This variable is really the same as man3direxp, unless you are using
2278 AFS in which case it points to the read/write location whereas
2279 man3direxp only points to the read-only access location. For extra
2280 portability, you should only use this variable within your makefiles.
2282 installprefix (installprefix.U):
2283 This variable holds the name of the directory below which
2284 "make install" will install the package. For most users, this
2285 is the same as prefix. However, it is useful for
2286 installing the software into a different (usually temporary)
2287 location after which it can be bundled up and moved somehow
2288 to the final location specified by prefix.
2290 installprefixexp (installprefix.U):
2291 This variable holds the full absolute path of installprefix
2292 with all ~-expansion done.
2294 installprivlib (privlib.U):
2295 This variable is really the same as privlibexp but may differ on
2296 those systems using AFS. For extra portability, only this variable
2297 should be used in makefiles.
2299 installscript (scriptdir.U):
2300 This variable is usually the same as scriptdirexp, unless you are on
2301 a system running AFS, in which case they may differ slightly. You
2302 should always use this variable within your makefiles for portability.
2304 installsitearch (sitearch.U):
2305 This variable is really the same as sitearchexp but may differ on
2306 those systems using AFS. For extra portability, only this variable
2307 should be used in makefiles.
2309 installsitebin (sitebin.U):
2310 This variable is usually the same as sitebinexp, unless you are on
2311 a system running AFS, in which case they may differ slightly. You
2312 should always use this variable within your makefiles for portability.
2314 installsitelib (sitelib.U):
2315 This variable is really the same as sitelibexp but may differ on
2316 those systems using AFS. For extra portability, only this variable
2317 should be used in makefiles.
2319 installstyle (installstyle.U):
2320 This variable describes the "style" of the perl installation.
2321 This is intended to be useful for tools that need to
2322 manipulate entire perl distributions. Perl itself doesn't use
2323 this to find its libraries -- the library directories are
2324 stored directly in Config.pm. Currently, there are only two
2325 styles: "lib" and "lib/perl5". The default library locations
2326 (e.g. privlib, sitelib) are either $prefix/lib or
2327 $prefix/lib/perl5. The former is useful if $prefix is a
2328 directory dedicated to perl (e.g. /opt/perl), while the latter
2329 is useful if $prefix is shared by many packages, e.g. if
2331 This may later be extended to include other information, so
2332 be careful with pattern-matching on the results.
2333 For compatibility with perl5.005 and earlier, the default
2334 setting is based on whether or not $prefix contains the string
2337 installusrbinperl (instubperl.U):
2338 This variable tells whether Perl should be installed also as
2339 /usr/bin/perl in addition to
2342 installvendorarch (vendorarch.U):
2343 This variable is really the same as vendorarchexp but may differ on
2344 those systems using AFS. For extra portability, only this variable
2345 should be used in makefiles.
2347 installvendorbin (vendorbin.U):
2348 This variable is really the same as vendorbinexp but may differ on
2349 those systems using AFS. For extra portability, only this variable
2350 should be used in makefiles.
2352 installvendorlib (vendorlib.U):
2353 This variable is really the same as vendorlibexp but may differ on
2354 those systems using AFS. For extra portability, only this variable
2355 should be used in makefiles.
2357 intsize (intsize.U):
2358 This variable contains the value of the INTSIZE symbol, which
2359 indicates to the C program how many bytes there are in an int.
2361 ivdformat (perlxvf.U):
2362 This variable contains the format string used for printing
2363 a Perl IV as a signed decimal integer.
2366 This variable is the size of an IV in bytes.
2369 This variable contains the C type used for Perl's IV.
2371 known_extensions (Extensions.U):
2372 This variable holds a list of all XS extensions included in
2376 This variable is defined but not used by Configure.
2377 The value is a plain '' and is not useful.
2380 This variable contains a flag which will tell the C compiler and loader
2381 to produce a program running with a large memory model. It is up to
2382 the Makefile to use this.
2385 This variable indicates the program to be used to link
2386 libraries for dynamic loading. On some systems, it is 'ld'.
2387 On ELF systems, it should be $cc. Mostly, we'll try to respect
2388 the hint file setting.
2390 lddlflags (dlsrc.U):
2391 This variable contains any special flags that might need to be
2392 passed to $ld to create a shared library suitable for dynamic
2393 loading. It is up to the makefile to use it. For hpux, it
2394 should be '-b'. For sunos 4.1, it is empty.
2396 ldflags (ccflags.U):
2397 This variable contains any additional C loader flags desired by
2398 the user. It is up to the Makefile to use this.
2400 ldlibpthname (libperl.U):
2401 This variable holds the name of the shared library
2402 search path, often LD_LIBRARY_PATH. To get an empty
2403 string, the hints file must set this to 'none'.
2406 This variable is used internally by Configure to determine the
2407 full pathname (if any) of the less program. After Configure runs,
2408 the value is reset to a plain "less" and is not useful.
2411 This is an old synonym for _a.
2414 This variable contains the location of the C library.
2416 libperl (libperl.U):
2417 The perl executable is obtained by linking perlmain.c with
2418 libperl, any static extensions (usually just DynaLoader),
2419 and any other libraries needed on this system. libperl
2420 is usually libperl.a, but can also be libperl.so.xxx if
2421 the user wishes to build a perl executable with a shared
2425 This variable holds the general path (space-separated) used to find
2426 libraries. It is intended to be used by other units.
2429 This variable holds the additional libraries we want to use.
2430 It is up to the Makefile to deal with it.
2433 This variable holds the directory names aka dirnames of the libraries
2434 we found and accepted, duplicates are removed.
2437 This variable holds the filenames aka basenames of the libraries
2438 we found and accepted.
2441 This variable holds the full pathnames of the libraries
2442 we found and accepted.
2445 This variable holds the directory names probed for libraries.
2447 libswanted (Myinit.U):
2448 This variable holds a list of all the libraries we want to
2449 search. The order is chosen to pick up the c library
2450 ahead of ucb or bsd libraries for SVR4.
2453 This variable is defined but not used by Configure.
2454 The value is a plain '' and is not useful.
2457 This variable is defined but not used by Configure.
2458 The value is a plain '' and is not useful.
2460 lkflags (ccflags.U):
2461 This variable contains any additional C partial linker flags desired by
2462 the user. It is up to the Makefile to use this.
2465 This variable is used internally by Configure to determine the
2466 full pathname (if any) of the ln program. After Configure runs,
2467 the value is reset to a plain "ln" and is not useful.
2470 This variable holds the name of the command to make
2471 symbolic links (if they are supported). It can be used
2472 in the Makefile. It is either 'ln -s' or 'ln'
2474 locincpth (ccflags.U):
2475 This variable contains a list of additional directories to be
2476 searched by the compiler. The appropriate '-I' directives will
2477 be added to ccflags. This is intended to simplify setting
2478 local directories from the Configure command line.
2479 It's not much, but it parallels the loclibpth stuff in libpth.U.
2481 loclibpth (libpth.U):
2482 This variable holds the paths (space-separated) used to find local
2483 libraries. It is prepended to libpth, and is intended to be easily
2484 set from the command line.
2486 longdblsize (d_longdbl.U):
2487 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2488 indicates to the C program how many bytes there are in a long double,
2489 if this system supports long doubles.
2491 longlongsize (d_longlong.U):
2492 This variable contains the value of the LONGLONGSIZE symbol, which
2493 indicates to the C program how many bytes there are in a long long,
2494 if this system supports long long.
2496 longsize (intsize.U):
2497 This variable contains the value of the LONGSIZE symbol, which
2498 indicates to the C program how many bytes there are in a long.
2501 This variable is defined but not used by Configure.
2502 The value is a plain '' and is not useful.
2505 This variable is defined but not used by Configure.
2506 The value is a plain '' and is not useful.
2509 This variable is used internally by Configure to determine the
2510 full pathname (if any) of the ls program. After Configure runs,
2511 the value is reset to a plain "ls" and is not useful.
2513 lseeksize (lseektype.U):
2514 This variable defines lseektype to be something like off_t, long,
2515 or whatever type is used to declare lseek offset's type in the
2516 kernel (which also appears to be lseek's return type).
2518 lseektype (lseektype.U):
2519 This variable defines lseektype to be something like off_t, long,
2520 or whatever type is used to declare lseek offset's type in the
2521 kernel (which also appears to be lseek's return type).
2524 This variable is defined but not used by Configure.
2525 The value is a plain '' and is not useful.
2528 This variable is defined but not used by Configure.
2529 The value is a plain '' and is not useful.
2532 This variable is used internally by Configure to determine the
2533 full pathname (if any) of the make program. After Configure runs,
2534 the value is reset to a plain "make" and is not useful.
2536 make_set_make (make.U):
2537 Some versions of 'make' set the variable MAKE. Others do not.
2538 This variable contains the string to be included in Makefile.SH
2539 so that MAKE is set if needed, and not if not needed.
2540 Possible values are:
2541 make_set_make='#' # If your make program handles this for you,
2542 make_set_make="MAKE=$make" # if it doesn't.
2543 I used a comment character so that we can distinguish a
2544 'set' value (from a previous config.sh or Configure '-D' option)
2545 from an uncomputed value.
2547 mallocobj (mallocsrc.U):
2548 This variable contains the name of the malloc.o that this package
2549 generates, if that malloc.o is preferred over the system malloc.
2550 Otherwise the value is null. This variable is intended for generating
2551 Makefiles. See mallocsrc.
2553 mallocsrc (mallocsrc.U):
2554 This variable contains the name of the malloc.c that comes with
2555 the package, if that malloc.c is preferred over the system malloc.
2556 Otherwise the value is null. This variable is intended for generating
2559 malloctype (mallocsrc.U):
2560 This variable contains the kind of ptr returned by malloc and realloc.
2562 man1dir (man1dir.U):
2563 This variable contains the name of the directory in which manual
2564 source pages are to be put. It is the responsibility of the
2565 Makefile.SH to get the value of this into the proper command.
2566 You must be prepared to do the ~name expansion yourself.
2568 man1direxp (man1dir.U):
2569 This variable is the same as the man1dir variable, but is filename
2570 expanded at configuration time, for convenient use in makefiles.
2572 man1ext (man1dir.U):
2573 This variable contains the extension that the manual page should
2574 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2577 man3dir (man3dir.U):
2578 This variable contains the name of the directory in which manual
2579 source pages are to be put. It is the responsibility of the
2580 Makefile.SH to get the value of this into the proper command.
2581 You must be prepared to do the ~name expansion yourself.
2583 man3direxp (man3dir.U):
2584 This variable is the same as the man3dir variable, but is filename
2585 expanded at configuration time, for convenient use in makefiles.
2587 man3ext (man3dir.U):
2588 This variable contains the extension that the manual page should
2589 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2593 This variable is used internally by Configure to determine the
2594 full pathname (if any) of the Mcc program. After Configure runs,
2595 the value is reset to a plain "Mcc" and is not useful.
2598 This variable contains a flag which will tell the C compiler and loader
2599 to produce a program running with a medium memory model. If the
2600 medium model is not supported, contains the flag to produce large
2601 model programs. It is up to the Makefile to use this.
2603 mips_type (usrinc.U):
2604 This variable holds the environment type for the mips system.
2605 Possible values are "BSD 4.3" and "System V".
2608 This variable is used internally by Configure to determine the
2609 full pathname (if any) of the mkdir program. After Configure runs,
2610 the value is reset to a plain "mkdir" and is not useful.
2612 mmaptype (d_mmap.U):
2613 This symbol contains the type of pointer returned by mmap()
2614 (and simultaneously the type of the first argument).
2615 It can be 'void *' or 'caddr_t'.
2618 This variable contains the list of memory models supported by this
2619 system. Possible component values are none, split, unsplit, small,
2620 medium, large, and huge. The component values are space separated.
2622 modetype (modetype.U):
2623 This variable defines modetype to be something like mode_t,
2624 int, unsigned short, or whatever type is used to declare file
2625 modes for system calls.
2628 This variable is used internally by Configure to determine the
2629 full pathname (if any) of the more program. After Configure runs,
2630 the value is reset to a plain "more" and is not useful.
2632 multiarch (multiarch.U):
2633 This variable conditionally defines the MULTIARCH symbol
2634 which signifies the presence of multiplatform files.
2635 This is normally set by hints files.
2638 This variable is defined but not used by Configure.
2639 The value is a plain '' and is not useful.
2641 myarchname (archname.U):
2642 This variable holds the architecture name computed by Configure in
2643 a previous run. It is not intended to be perused by any user and
2644 should never be set in a hint file.
2646 mydomain (myhostname.U):
2647 This variable contains the eventual value of the MYDOMAIN symbol,
2648 which is the domain of the host the program is going to run on.
2649 The domain must be appended to myhostname to form a complete host name.
2650 The dot comes with mydomain, and need not be supplied by the program.
2652 myhostname (myhostname.U):
2653 This variable contains the eventual value of the MYHOSTNAME symbol,
2654 which is the name of the host the program is going to run on.
2655 The domain is not kept with hostname, but must be gotten from mydomain.
2656 The dot comes with mydomain, and need not be supplied by the program.
2658 myuname (Oldconfig.U):
2659 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2660 pseudo variables assignments in the output are stripped, thank you. The
2661 whole thing is then lower-cased.
2664 This variable contains the '-n' flag if that is what causes the echo
2665 command to suppress newline. Otherwise it is null. Correct usage is
2666 $echo $n "prompt for a question: $c".
2668 netdb_hlen_type (netdbtype.U):
2669 This variable holds the type used for the 2nd argument to
2670 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2671 This is only useful if you have gethostbyaddr(), naturally.
2673 netdb_host_type (netdbtype.U):
2674 This variable holds the type used for the 1st argument to
2675 gethostbyaddr(). Usually, this is char * or void *, possibly
2676 with or without a const prefix.
2677 This is only useful if you have gethostbyaddr(), naturally.
2679 netdb_name_type (netdbtype.U):
2680 This variable holds the type used for the argument to
2681 gethostbyname(). Usually, this is char * or const char *.
2682 This is only useful if you have gethostbyname(), naturally.
2684 netdb_net_type (netdbtype.U):
2685 This variable holds the type used for the 1st argument to
2686 getnetbyaddr(). Usually, this is int or long.
2687 This is only useful if you have getnetbyaddr(), naturally.
2690 This variable is used internally by Configure to determine the
2691 full pathname (if any) of the nm program. After Configure runs,
2692 the value is reset to a plain "nm" and is not useful.
2695 This variable holds the options that may be necessary for nm.
2697 nm_so_opt (usenm.U):
2698 This variable holds the options that may be necessary for nm
2699 to work on a shared library but that can not be used on an
2700 archive library. Currently, this is only used by Linux, where
2701 nm --dynamic is *required* to get symbols from an ELF library which
2702 has been stripped, but nm --dynamic is *fatal* on an archive library.
2703 Maybe Linux should just always set usenm=false.
2705 nonxs_ext (Extensions.U):
2706 This variable holds a list of all non-xs extensions included
2707 in the package. All of them will be built.
2710 This variable is used internally by Configure to determine the
2711 full pathname (if any) of the nroff program. After Configure runs,
2712 the value is reset to a plain "nroff" and is not useful.
2715 This variable is the size of an NV in bytes.
2718 This variable contains the C type used for Perl's NV.
2720 o_nonblock (nblock_io.U):
2721 This variable bears the symbol value to be used during open() or fcntl()
2722 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2723 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2724 but that is only supported by some devices.
2727 This is an old synonym for _o.
2729 old_pthread_create_joinable (d_pthrattrj.U):
2730 This variable defines the constant to use for creating joinable
2731 (aka undetached) pthreads. Unused if pthread.h defines
2732 PTHREAD_CREATE_JOINABLE. If used, possible values are
2733 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2735 optimize (ccflags.U):
2736 This variable contains any optimizer/debugger flag that should be used.
2737 It is up to the Makefile to use it.
2739 orderlib (orderlib.U):
2740 This variable is "true" if the components of libraries must be ordered
2741 (with `lorder $* | tsort`) before placing them in an archive. Set to
2742 "false" if ranlib or ar can generate random libraries.
2744 osname (Oldconfig.U):
2745 This variable contains the operating system name (e.g. sunos,
2746 solaris, hpux, etc.). It can be useful later on for setting
2747 defaults. Any spaces are replaced with underscores. It is set
2748 to a null string if we can't figure it out.
2750 osvers (Oldconfig.U):
2751 This variable contains the operating system version (e.g.
2752 4.1.3, 5.2, etc.). It is primarily used for helping select
2753 an appropriate hints file, but might be useful elsewhere for
2754 setting defaults. It is set to '' if we can't figure it out.
2755 We try to be flexible about how much of the version number
2756 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2757 same for this package, hints files might just be os_4.0 or
2758 os_4.1, etc., not keeping separate files for each little release.
2760 package (package.U):
2761 This variable contains the name of the package being constructed.
2762 It is primarily intended for the use of later Configure units.
2765 This variable contains the name of the preferred pager on the system.
2766 Usual values are (the full pathnames of) more, less, pg, or cat.
2769 This variable contains a command that produces the text of the
2770 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2771 "ypcat passwd" when NIS is used.
2772 On some systems, such as os390, there may be no equivalent
2773 command, in which case this variable is unset.
2775 patchlevel (patchlevel.U):
2776 The patchlevel level of this package.
2777 The value of patchlevel comes from the patchlevel.h file.
2778 In a version number such as 5.6.1, this is the "6".
2779 In patchlevel.h, this is referred to as "PERL_VERSION".
2782 This is an old synonym for p_ in Head.U, the character
2783 used to separate elements in the command shell search PATH.
2786 This variable contains the full path (if any) to a previously
2787 installed perl5.005 or later suitable for running the script
2788 to determine inc_version_list.
2791 This variable is defined but not used by Configure.
2792 The value is a plain '' and is not useful.
2794 PERL_REVISION (Oldsyms.U):
2795 In a Perl version number such as 5.6.2, this is the 5.
2796 This value is manually set in patchlevel.h
2798 PERL_SUBVERSION (Oldsyms.U):
2799 In a Perl version number such as 5.6.2, this is the 2.
2800 Values greater than 50 represent potentially unstable
2801 development subversions.
2802 This value is manually set in patchlevel.h
2804 PERL_VERSION (Oldsyms.U):
2805 In a Perl version number such as 5.6.2, this is the 6.
2806 This value is manually set in patchlevel.h
2808 perladmin (perladmin.U):
2809 Electronic mail address of the perl5 administrator.
2811 perlpath (perlpath.U):
2812 This variable contains the eventual value of the PERLPATH symbol,
2813 which contains the name of the perl interpreter to be used in
2814 shell scripts and in the "eval 'exec'" idiom.
2817 This variable is used internally by Configure to determine the
2818 full pathname (if any) of the pg program. After Configure runs,
2819 the value is reset to a plain "pg" and is not useful.
2821 phostname (myhostname.U):
2822 This variable contains the eventual value of the PHOSTNAME symbol,
2823 which is a command that can be fed to popen() to get the host name.
2824 The program should probably not presume that the domain is or isn't
2827 pidtype (pidtype.U):
2828 This variable defines PIDTYPE to be something like pid_t, int,
2829 ushort, or whatever type is used to declare process ids in the kernel.
2832 Holds the private path used by Configure to find out the libraries.
2833 Its value is prepend to libpth. This variable takes care of special
2834 machines, like the mips. Usually, it should be empty.
2836 pm_apiversion (xs_apiversion.U):
2837 This variable contains the version of the oldest perl
2838 compatible with the present perl. (That is, pure perl modules
2839 written for $pm_apiversion will still work for the current
2840 version). perl.c:incpush() and lib/lib.pm will automatically
2841 search in $sitelib for older directories across major versions
2842 back to pm_apiversion. This is only useful if you have a perl
2843 library directory tree structured like the default one. The
2844 versioned site_perl library was introduced in 5.005, so that's
2845 the default setting for this variable. It's hard to imagine
2846 it changing before Perl6. It is included here for symmetry
2847 with xs_apiveprsion -- the searching algorithms will
2848 (presumably) be similar.
2849 See the INSTALL file for how this works.
2852 This variable is defined but not used by Configure.
2853 The value is a plain '' and is not useful.
2856 This variable is defined but not used by Configure.
2857 The value is a plain '' and is not useful.
2860 This variable holds the name of the directory below which the
2861 user will install the package. Usually, this is /usr/local, and
2862 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2863 man pages in /usr/local/man, etc. It is only used to set defaults
2864 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2866 prefixexp (prefix.U):
2867 This variable holds the full absolute path of the directory below
2868 which the user will install the package. Derived from prefix.
2870 privlib (privlib.U):
2871 This variable contains the eventual value of the PRIVLIB symbol,
2872 which is the name of the private library for this package. It may
2873 have a ~ on the front. It is up to the makefile to eventually create
2874 this directory while performing installation (with ~ substitution).
2876 privlibexp (privlib.U):
2877 This variable is the ~name expanded version of privlib, so that you
2878 may use it directly in Makefiles or shell scripts.
2880 prototype (prototype.U):
2881 This variable holds the eventual value of CAN_PROTOTYPE, which
2882 indicates the C compiler can handle funciton prototypes.
2884 ptrsize (ptrsize.U):
2885 This variable contains the value of the PTRSIZE symbol, which
2886 indicates to the C program how many bytes there are in a pointer.
2888 quadkind (quadtype.U):
2889 This variable, if defined, encodes the type of a quad:
2890 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2892 quadtype (quadtype.U):
2893 This variable defines Quad_t to be something like long, int,
2894 long long, int64_t, or whatever type is used for 64-bit integers.
2896 randbits (randfunc.U):
2897 Indicates how many bits are produced by the function used to
2898 generate normalized random numbers.
2900 randfunc (randfunc.U):
2901 Indicates the name of the random number function to use.
2902 Values include drand48, random, and rand. In C programs,
2903 the 'Drand01' macro is defined to generate uniformly distributed
2904 random numbers over the range [0., 1.[ (see drand01 and nrand).
2906 randseedtype (randfunc.U):
2907 Indicates the type of the argument of the seedfunc.
2909 ranlib (orderlib.U):
2910 This variable is set to the pathname of the ranlib program, if it is
2911 needed to generate random libraries. Set to ":" if ar can generate
2912 random libraries or if random libraries are not supported
2914 rd_nodata (nblock_io.U):
2915 This variable holds the return code from read() when no data is
2916 present. It should be -1, but some systems return 0 when O_NDELAY is
2917 used, which is a shame because you cannot make the difference between
2918 no data and an EOF.. Sigh!
2920 revision (patchlevel.U):
2921 The value of revision comes from the patchlevel.h file.
2922 In a version number such as 5.6.1, this is the "5".
2923 In patchlevel.h, this is referred to as "PERL_REVISION".
2926 This variable is used internally by Configure to determine the
2927 full pathname (if any) of the rm program. After Configure runs,
2928 the value is reset to a plain "rm" and is not useful.
2931 This variable is defined but not used by Configure.
2932 The value is a plain '' and is not useful.
2935 This variable contains 'true' or 'false' depending whether the
2936 nm extraction should be performed or not, according to the value
2937 of usenm and the flags on the Configure command line.
2939 sched_yield (d_pthread_y.U):
2940 This variable defines the way to yield the execution
2941 of the current thread.
2943 scriptdir (scriptdir.U):
2944 This variable holds the name of the directory in which the user wants
2945 to put publicly scripts for the package in question. It is either
2946 the same directory as for binaries, or a special one that can be
2947 mounted across different architectures, like /usr/share. Programs
2948 must be prepared to deal with ~name expansion.
2950 scriptdirexp (scriptdir.U):
2951 This variable is the same as scriptdir, but is filename expanded
2952 at configuration time, for programs not wanting to bother with it.
2955 This variable is used internally by Configure to determine the
2956 full pathname (if any) of the sed program. After Configure runs,
2957 the value is reset to a plain "sed" and is not useful.
2959 seedfunc (randfunc.U):
2960 Indicates the random number generating seed function.
2961 Values include srand48, srandom, and srand.
2963 selectminbits (selectminbits.U):
2964 This variable holds the minimum number of bits operated by select.
2965 That is, if you do select(n, ...), how many bits at least will be
2966 cleared in the masks if some activity is detected. Usually this
2967 is either n or 32*ceil(n/32), especially many little-endians do
2968 the latter. This is only useful if you have select(), naturally.
2970 selecttype (selecttype.U):
2971 This variable holds the type used for the 2nd, 3rd, and 4th
2972 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
2973 is defined, and 'int *' otherwise. This is only useful if you
2974 have select(), naturally.
2977 This variable is defined but not used by Configure.
2978 The value is a plain '' and is not useful.
2981 This variable contains the full pathname of the shell used
2982 on this system to execute Bourne shell scripts. Usually, this will be
2983 /bin/sh, though it's possible that some systems will have /bin/ksh,
2984 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
2986 This unit comes before Options.U, so you can't set sh with a '-D'
2987 option, though you can override this (and startsh)
2988 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
2991 This variable is defined but not used by Configure.
2992 The value is a plain '' and is not useful.
2994 sharpbang (spitshell.U):
2995 This variable contains the string #! if this system supports that
2998 shmattype (d_shmat.U):
2999 This symbol contains the type of pointer returned by shmat().
3000 It can be 'void *' or 'char *'.
3002 shortsize (intsize.U):
3003 This variable contains the value of the SHORTSIZE symbol which
3004 indicates to the C program how many bytes there are in a short.
3006 shrpenv (libperl.U):
3007 If the user builds a shared libperl.so, then we need to tell the
3008 'perl' executable where it will be able to find the installed libperl.so.
3009 One way to do this on some systems is to set the environment variable
3010 LD_RUN_PATH to the directory that will be the final location of the
3011 shared libperl.so. The makefile can use this with something like
3012 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3014 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3017 See the main perl Makefile.SH for actual working usage.
3018 Alternatively, we might be able to use a command line option such
3019 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3020 $archlibexp/CORE (Linux).
3022 shsharp (spitshell.U):
3023 This variable tells further Configure units whether your sh can
3026 sig_count (sig_name.U):
3027 This variable holds a number larger than the largest valid
3028 signal number. This is usually the same as the NSIG macro.
3030 sig_name (sig_name.U):
3031 This variable holds the signal names, space separated. The leading
3032 SIG in signal name is removed. A ZERO is prepended to the
3033 list. This is currently not used.
3035 sig_name_init (sig_name.U):
3036 This variable holds the signal names, enclosed in double quotes and
3037 separated by commas, suitable for use in the SIG_NAME definition
3038 below. A "ZERO" is prepended to the list, and the list is
3039 terminated with a plain 0. The leading SIG in signal names
3040 is removed. See sig_num.
3042 sig_num (sig_name.U):
3043 This variable holds the signal numbers, space separated. A ZERO is
3044 prepended to the list (corresponding to the fake SIGZERO), and
3045 the list is terminated with a 0. Those numbers correspond to
3046 the value of the signal listed in the same place within the
3049 sig_num_init (sig_name.U):
3050 This variable holds the signal numbers, enclosed in double quotes and
3051 separated by commas, suitable for use in the SIG_NUM definition
3052 below. A "ZERO" is prepended to the list, and the list is
3053 terminated with a plain 0.
3055 signal_t (d_voidsig.U):
3056 This variable holds the type of the signal handler (void or int).
3058 sitearch (sitearch.U):
3059 This variable contains the eventual value of the SITEARCH symbol,
3060 which is the name of the private library for this package. It may
3061 have a ~ on the front. It is up to the makefile to eventually create
3062 this directory while performing installation (with ~ substitution).
3063 The standard distribution will put nothing in this directory.
3064 After perl has been installed, users may install their own local
3065 architecture-dependent modules in this directory with
3066 MakeMaker Makefile.PL
3067 or equivalent. See INSTALL for details.
3069 sitearchexp (sitearch.U):
3070 This variable is the ~name expanded version of sitearch, so that you
3071 may use it directly in Makefiles or shell scripts.
3073 sitebin (sitebin.U):
3074 This variable holds the name of the directory in which the user wants
3075 to put add-on publicly executable files for the package in question. It
3076 is most often a local directory such as /usr/local/bin. Programs using
3077 this variable must be prepared to deal with ~name substitution.
3078 The standard distribution will put nothing in this directory.
3079 After perl has been installed, users may install their own local
3080 executables in this directory with
3081 MakeMaker Makefile.PL
3082 or equivalent. See INSTALL for details.
3084 sitebinexp (sitebin.U):
3085 This is the same as the sitebin variable, but is filename expanded at
3086 configuration time, for use in your makefiles.
3088 sitelib (sitelib.U):
3089 This variable contains the eventual value of the SITELIB symbol,
3090 which is the name of the private library for this package. It may
3091 have a ~ on the front. It is up to the makefile to eventually create
3092 this directory while performing installation (with ~ substitution).
3093 The standard distribution will put nothing in this directory.
3094 After perl has been installed, users may install their own local
3095 architecture-independent modules in this directory with
3096 MakeMaker Makefile.PL
3097 or equivalent. See INSTALL for details.
3099 sitelib_stem (sitelib.U):
3100 This variable is $sitelibexp with any trailing version-specific component
3101 removed. The elements in inc_version_list (inc_version_list.U) can
3102 be tacked onto this variable to generate a list of directories to search.
3104 sitelibexp (sitelib.U):
3105 This variable is the ~name expanded version of sitelib, so that you
3106 may use it directly in Makefiles or shell scripts.
3108 siteprefix (siteprefix.U):
3109 This variable holds the full absolute path of the directory below
3110 which the user will install add-on packages.
3111 See INSTALL for usage and examples.
3113 siteprefixexp (siteprefix.U):
3114 This variable holds the full absolute path of the directory below
3115 which the user will install add-on packages. Derived from siteprefix.
3117 sizesize (sizesize.U):
3118 This variable contains the size of a sizetype in bytes.
3120 sizetype (sizetype.U):
3121 This variable defines sizetype to be something like size_t,
3122 unsigned long, or whatever type is used to declare length
3123 parameters for string functions.
3126 This variable is defined but not used by Configure.
3127 The value is a plain '' and is not useful.
3130 This variable is defined but not used by Configure.
3131 The value is a plain '' and is not useful.
3134 This variable contains a flag which will tell the C compiler and loader
3135 to produce a program running with a small memory model. It is up to
3136 the Makefile to use this.
3139 This variable holds the extension used to identify shared libraries
3140 (also known as shared objects) on the system. Usually set to 'so'.
3142 sockethdr (d_socket.U):
3143 This variable has any cpp '-I' flags needed for socket support.
3145 socketlib (d_socket.U):
3146 This variable has the names of any libraries needed for socket support.
3148 socksizetype (socksizetype.U):
3149 This variable holds the type used for the size argument
3150 for various socket calls like accept. Usual values include
3151 socklen_t, size_t, and int.
3154 This variable is used internally by Configure to determine the
3155 full pathname (if any) of the sort program. After Configure runs,
3156 the value is reset to a plain "sort" and is not useful.
3158 spackage (package.U):
3159 This variable contains the name of the package being constructed,
3160 with the first letter uppercased, i.e. suitable for starting
3163 spitshell (spitshell.U):
3164 This variable contains the command necessary to spit out a runnable
3165 shell on this system. It is either cat or a grep '-v' for # comments.
3168 This variable contains a flag which will tell the C compiler and loader
3169 to produce a program that will run in separate I and D space, for those
3170 machines that support separation of instruction and data space. It is
3171 up to the Makefile to use this.
3173 sPRId64 (quadfio.U):
3174 This variable, if defined, contains the string used by stdio to
3175 format 64-bit decimal numbers (format 'd') for output.
3177 sPRIeldbl (longdblfio.U):
3178 This variable, if defined, contains the string used by stdio to
3179 format long doubles (format 'e') for output.
3181 sPRIEldbl (longdblfio.U):
3182 This variable, if defined, contains the string used by stdio to
3183 format long doubles (format 'E') for output.
3185 sPRIfldbl (longdblfio.U):
3186 This variable, if defined, contains the string used by stdio to
3187 format long doubles (format 'f') for output.
3189 sPRIFldbl (longdblfio.U):
3190 This variable, if defined, contains the string used by stdio to
3191 format long doubles (format 'F') for output.
3193 sPRIgldbl (longdblfio.U):
3194 This variable, if defined, contains the string used by stdio to
3195 format long doubles (format 'g') for output.
3197 sPRIGldbl (longdblfio.U):
3198 This variable, if defined, contains the string used by stdio to
3199 format long doubles (format 'G') for output.
3201 sPRIi64 (quadfio.U):
3202 This variable, if defined, contains the string used by stdio to
3203 format 64-bit decimal numbers (format 'i') for output.
3205 sPRIo64 (quadfio.U):
3206 This variable, if defined, contains the string used by stdio to
3207 format 64-bit octal numbers (format 'o') for output.
3209 sPRIu64 (quadfio.U):
3210 This variable, if defined, contains the string used by stdio to
3211 format 64-bit unsigned decimal numbers (format 'u') for output.
3213 sPRIx64 (quadfio.U):
3214 This variable, if defined, contains the string used by stdio to
3215 format 64-bit hexadecimal numbers (format 'x') for output.
3217 sPRIX64 (quadfio.U):
3218 This variable, if defined, contains the string used by stdio to
3219 format 64-bit hExADECimAl numbers (format 'X') for output.
3222 This variable holds the path to the package source. It is up to
3223 the Makefile to use this variable and set VPATH accordingly to
3224 find the sources remotely.
3226 ssizetype (ssizetype.U):
3227 This variable defines ssizetype to be something like ssize_t,
3228 long or int. It is used by functions that return a count
3229 of bytes or an error condition. It must be a signed type.
3230 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3232 startperl (startperl.U):
3233 This variable contains the string to put on the front of a perl
3234 script to make sure (hopefully) that it runs with perl and not some
3235 shell. Of course, that leading line must be followed by the classical
3237 eval 'exec perl -S $0 ${1+"$@"}'
3238 if $running_under_some_shell;
3239 to guarantee perl startup should the shell execute the script. Note
3240 that this magic incatation is not understood by csh.
3242 startsh (startsh.U):
3243 This variable contains the string to put on the front of a shell
3244 script to make sure (hopefully) that it runs with sh and not some
3247 static_ext (Extensions.U):
3248 This variable holds a list of XS extension files we want to
3249 link statically into the package. It is used by Makefile.
3251 stdchar (stdchar.U):
3252 This variable conditionally defines STDCHAR to be the type of char
3253 used in stdio.h. It has the values "unsigned char" or "char".
3255 stdio_base (d_stdstdio.U):
3256 This variable defines how, given a FILE pointer, fp, to access the
3257 _base field (or equivalent) of stdio.h's FILE structure. This will
3258 be used to define the macro FILE_base(fp).
3260 stdio_bufsiz (d_stdstdio.U):
3261 This variable defines how, given a FILE pointer, fp, to determine
3262 the number of bytes store in the I/O buffer pointer to by the
3263 _base field (or equivalent) of stdio.h's FILE structure. This will
3264 be used to define the macro FILE_bufsiz(fp).
3266 stdio_cnt (d_stdstdio.U):
3267 This variable defines how, given a FILE pointer, fp, to access the
3268 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3269 be used to define the macro FILE_cnt(fp).
3271 stdio_filbuf (d_stdstdio.U):
3272 This variable defines how, given a FILE pointer, fp, to tell
3273 stdio to refill it's internal buffers (?). This will
3274 be used to define the macro FILE_filbuf(fp).
3276 stdio_ptr (d_stdstdio.U):
3277 This variable defines how, given a FILE pointer, fp, to access the
3278 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3279 be used to define the macro FILE_ptr(fp).
3281 stdio_stream_array (stdio_streams.U):
3282 This variable tells the name of the array holding the stdio streams.
3283 Usual values include _iob, __iob, and __sF.
3285 strings (i_string.U):
3286 This variable holds the full path of the string header that will be
3287 used. Typically /usr/include/string.h or /usr/include/strings.h.
3290 This variable is defined but not used by Configure.
3291 The value is a plain '' and is not useful.
3293 subversion (patchlevel.U):
3294 The subversion level of this package.
3295 The value of subversion comes from the patchlevel.h file.
3296 In a version number such as 5.6.1, this is the "1".
3297 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3298 This is unique to perl.
3301 This variable holds the place where the manual is located on this
3302 system. It is not the place where the user wants to put his manual
3303 pages. Rather it is the place where Configure may look to find manual
3304 for unix commands (section 1 of the manual usually). See mansrc.
3307 This variable is defined but not used by Configure.
3308 The value is a plain '' and is not useful.
3311 This variable is defined but not used by Configure.
3312 The value is a plain '' and is not useful.
3315 This variable is defined but not used by Configure.
3316 The value is a plain '' and is not useful.
3319 This variable is defined but not used by Configure.
3320 The value is a plain '' and is not useful.
3323 This variable is used internally by Configure to determine the
3324 full pathname (if any) of the test program. After Configure runs,
3325 the value is reset to a plain "test" and is not useful.
3327 timeincl (i_time.U):
3328 This variable holds the full path of the included time header(s).
3330 timetype (d_time.U):
3331 This variable holds the type returned by time(). It can be long,
3332 or time_t on BSD sites (in which case <sys/types.h> should be
3333 included). Anyway, the type Time_t should be used.
3336 This variable is used internally by Configure to determine the
3337 full pathname (if any) of the touch program. After Configure runs,
3338 the value is reset to a plain "touch" and is not useful.
3341 This variable is used internally by Configure to determine the
3342 full pathname (if any) of the tr program. After Configure runs,
3343 the value is reset to a plain "tr" and is not useful.
3346 This variable contains the value to be passed to the tr(1)
3347 command to transliterate a newline. Typical values are
3348 '\012' and '\n'. This is needed for EBCDIC systems where
3349 newline is not necessarily '\012'.
3352 This variable is defined but not used by Configure.
3353 The value is a plain '' and is not useful.
3356 This variable is the size of an U16 in bytes.
3359 This variable contains the C type used for Perl's U16.
3362 This variable is the size of an U32 in bytes.
3365 This variable contains the C type used for Perl's U32.
3368 This variable is the size of an U64 in bytes.
3371 This variable contains the C type used for Perl's U64.
3374 This variable is the size of an U8 in bytes.
3377 This variable contains the C type used for Perl's U8.
3380 This variable contains the format string used for printing a Uid_t.
3382 uidsign (uidsign.U):
3383 This variable contains the signedness of a uidtype.
3384 1 for unsigned, -1 for signed.
3386 uidsize (uidsize.U):
3387 This variable contains the size of a uidtype in bytes.
3389 uidtype (uidtype.U):
3390 This variable defines Uid_t to be something like uid_t, int,
3391 ushort, or whatever type is used to declare user ids in the kernel.
3394 This variable is used internally by Configure to determine the
3395 full pathname (if any) of the uname program. After Configure runs,
3396 the value is reset to a plain "uname" and is not useful.
3399 This variable is used internally by Configure to determine the
3400 full pathname (if any) of the uniq program. After Configure runs,
3401 the value is reset to a plain "uniq" and is not useful.
3403 uquadtype (quadtype.U):
3404 This variable defines Uquad_t to be something like unsigned long,
3405 unsigned int, unsigned long long, uint64_t, or whatever type is
3406 used for 64-bit integers.
3408 use5005threads (usethreads.U):
3409 This variable conditionally defines the USE_5005THREADS symbol,
3410 and indicates that Perl should be built to use the 5.005-based
3411 threading implementation.
3413 use64bitall (use64bits.U):
3414 This variable conditionally defines the USE_64_BIT_ALL symbol,
3415 and indicates that 64-bit integer types should be used
3416 when available. The maximal possible
3417 64-bitness is employed: LP64 or ILP64, meaning that you will
3418 be able to use more than 2 gigabytes of memory. This mode is
3419 even more binary incompatible than USE_64_BIT_INT. You may not
3420 be able to run the resulting executable in a 32-bit CPU at all or
3421 you may need at least to reboot your OS to 64-bit mode.
3423 use64bitint (use64bits.U):
3424 This variable conditionally defines the USE_64_BIT_INT symbol,
3425 and indicates that 64-bit integer types should be used
3426 when available. The minimal possible 64-bitness
3427 is employed, just enough to get 64-bit integers into Perl.
3428 This may mean using for example "long longs", while your memory
3429 may still be limited to 2 gigabytes.
3432 This variable indicates if the system supports dynamic
3433 loading of some sort. See also dlsrc and dlobj.
3435 useithreads (usethreads.U):
3436 This variable conditionally defines the USE_ITHREADS symbol,
3437 and indicates that Perl should be built to use the interpreter-based
3438 threading implementation.
3440 uselargefiles (uselfs.U):
3441 This variable conditionally defines the USE_LARGE_FILES symbol,
3442 and indicates that large file interfaces should be used when
3445 uselongdouble (uselongdbl.U):
3446 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3447 and indicates that long doubles should be used when available.
3449 usemorebits (usemorebits.U):
3450 This variable conditionally defines the USE_MORE_BITS symbol,
3451 and indicates that explicit 64-bit interfaces and long doubles
3452 should be used when available.
3454 usemultiplicity (usemultiplicity.U):
3455 This variable conditionally defines the MULTIPLICITY symbol,
3456 and indicates that Perl should be built to use multiplicity.
3458 usemymalloc (mallocsrc.U):
3459 This variable contains y if the malloc that comes with this package
3460 is desired over the system's version of malloc. People often include
3461 special versions of malloc for effiency, but such versions are often
3462 less portable. See also mallocsrc and mallocobj.
3463 If this is 'y', then -lmalloc is removed from $libs.
3466 This variable contains 'true' or 'false' depending whether the
3467 nm extraction is wanted or not.
3469 useopcode (Extensions.U):
3470 This variable holds either 'true' or 'false' to indicate
3471 whether the Opcode extension should be used. The sole
3472 use for this currently is to allow an easy mechanism
3473 for users to skip the Opcode extension from the Configure
3476 useperlio (useperlio.U):
3477 This variable conditionally defines the USE_PERLIO symbol,
3478 and indicates that the PerlIO abstraction should be
3481 useposix (Extensions.U):
3482 This variable holds either 'true' or 'false' to indicate
3483 whether the POSIX extension should be used. The sole
3484 use for this currently is to allow an easy mechanism
3485 for hints files to indicate that POSIX will not compile
3486 on a particular system.
3489 This variable is set to true when the user agrees to use sfio.
3490 It is set to false when sfio is not available or when the user
3491 explicitely requests not to use sfio. It is here primarily so
3492 that command-line settings can override the auto-detection of
3493 d_sfio without running into a "WHOA THERE".
3495 useshrplib (libperl.U):
3496 This variable is set to 'yes' if the user wishes
3497 to build a shared libperl, and 'no' otherwise.
3499 usesocks (usesocks.U):
3500 This variable conditionally defines the USE_SOCKS symbol,
3501 and indicates that Perl should be built to use SOCKS.
3503 usethreads (usethreads.U):
3504 This variable conditionally defines the USE_THREADS symbol,
3505 and indicates that Perl should be built to use threads.
3507 usevendorprefix (vendorprefix.U):
3508 This variable tells whether the vendorprefix
3509 and consequently other vendor* paths are in use.
3511 usevfork (d_vfork.U):
3512 This variable is set to true when the user accepts to use vfork.
3513 It is set to false when no vfork is available or when the user
3514 explicitely requests not to use vfork.
3517 This variable holds the path of the include files, which is
3518 usually /usr/include. It is mainly used by other Configure units.
3521 This variable is defined but not used by Configure.
3522 The value is a plain '' and is not useful.
3524 uvoformat (perlxvf.U):
3525 This variable contains the format string used for printing
3526 a Perl UV as an unsigned octal integer.
3529 This variable is the size of a UV in bytes.
3532 This variable contains the C type used for Perl's UV.
3534 uvuformat (perlxvf.U):
3535 This variable contains the format string used for printing
3536 a Perl UV as an unsigned decimal integer.
3538 uvxformat (perlxvf.U):
3539 This variable contains the format string used for printing
3540 a Perl UV as an unsigned hexadecimal integer.
3542 vendorarch (vendorarch.U):
3543 This variable contains the value of the PERL_VENDORARCH symbol.
3544 It may have a ~ on the front.
3545 The standard distribution will put nothing in this directory.
3546 Vendors who distribute perl may wish to place their own
3547 architecture-dependent modules and extensions in this directory with
3548 MakeMaker Makefile.PL INSTALLDIRS=vendor
3549 or equivalent. See INSTALL for details.
3551 vendorarchexp (vendorarch.U):
3552 This variable is the ~name expanded version of vendorarch, so that you
3553 may use it directly in Makefiles or shell scripts.
3555 vendorbin (vendorbin.U):
3556 This variable contains the eventual value of the VENDORBIN symbol.
3557 It may have a ~ on the front.
3558 The standard distribution will put nothing in this directory.
3559 Vendors who distribute perl may wish to place additional
3560 binaries in this directory with
3561 MakeMaker Makefile.PL INSTALLDIRS=vendor
3562 or equivalent. See INSTALL for details.
3564 vendorbinexp (vendorbin.U):
3565 This variable is the ~name expanded version of vendorbin, so that you
3566 may use it directly in Makefiles or shell scripts.
3568 vendorlib (vendorlib.U):
3569 This variable contains the eventual value of the VENDORLIB symbol,
3570 which is the name of the private library for this package.
3571 The standard distribution will put nothing in this directory.
3572 Vendors who distribute perl may wish to place their own
3573 modules in this directory with
3574 MakeMaker Makefile.PL INSTALLDIRS=vendor
3575 or equivalent. See INSTALL for details.
3577 vendorlib_stem (vendorlib.U):
3578 This variable is $vendorlibexp with any trailing version-specific component
3579 removed. The elements in inc_version_list (inc_version_list.U) can
3580 be tacked onto this variable to generate a list of directories to search.
3582 vendorlibexp (vendorlib.U):
3583 This variable is the ~name expanded version of vendorlib, so that you
3584 may use it directly in Makefiles or shell scripts.
3586 vendorprefix (vendorprefix.U):
3587 This variable holds the full absolute path of the directory below
3588 which the vendor will install add-on packages.
3589 See INSTALL for usage and examples.
3591 vendorprefixexp (vendorprefix.U):
3592 This variable holds the full absolute path of the directory below
3593 which the vendor will install add-on packages. Derived from vendorprefix.
3595 version (patchlevel.U):
3596 The full version number of this package, such as 5.6.1 (or 5_6_1).
3597 This combines revision, patchlevel, and subversion to get the
3598 full version number, including any possible subversions.
3599 This is suitable for use as a directory name, and hence is
3600 filesystem dependent.
3603 This variable is defined but not used by Configure.
3604 The value is a plain '' and is not useful.
3606 voidflags (voidflags.U):
3607 This variable contains the eventual value of the VOIDFLAGS symbol,
3608 which indicates how much support of the void type is given by this
3609 compiler. See VOIDFLAGS for more info.
3612 This variable holds extra path (space-separated) used to find
3613 libraries on this platform, for example CPU-specific libraries
3614 (on multi-CPU platforms) may be listed here.
3616 xs_apiversion (xs_apiversion.U):
3617 This variable contains the version of the oldest perl binary
3618 compatible with the present perl. perl.c:incpush() and
3619 lib/lib.pm will automatically search in $sitearch for older
3620 directories across major versions back to xs_apiversion.
3621 This is only useful if you have a perl library directory tree
3622 structured like the default one.
3623 See INSTALL for how this works.
3624 The versioned site_perl directory was introduced in 5.005,
3625 so that is the lowest possible value.
3626 Since this can depend on compile time options (such as
3627 bincompat) it is set by Configure. Other non-default sources
3628 of potential incompatibility, such as multiplicity, threads,
3629 debugging, 64bits, sfio, etc., are not checked for currently,
3630 though in principle we could go snooping around in old
3634 This variable is defined but not used by Configure.
3635 The value is a plain '' and is not useful.
3638 This variable is used internally by Configure to determine the
3639 full pathname (if any) of the zip program. After Configure runs,
3640 the value is reset to a plain "zip" and is not useful.