1 This file contains a description of all the shell variables whose value is
2 determined by the Configure script. Variables intended for use in C
3 programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
4 generates pod documentation for Config.pm from this file--please try to keep
5 the formatting regular.]
8 This variable defines the extension used for ordinary libraries.
9 For unix, it is '.a'. The '.' is included. Other possible
10 values include '.lib'.
13 This variable defines the extension used for executable files.
14 For unix it is empty. Other possible values include '.exe'.
17 This variable defines the extension used for object files.
18 For unix, it is '.o'. The '.' is included. Other possible
19 values include '.obj'.
22 This variable is set to 'true' if AFS (Andrew File System) is used
23 on the system, 'false' otherwise. It is possible to override this
24 with a hint value or command line option, but you'd better know
27 alignbytes (alignbytes.U):
28 This variable holds the number of bytes required to align a
29 double-- or a long double when applicable. Usual values are
30 2, 4 and 8. The default is eight, for safety.
32 ansi2knr (ansi2knr.U):
33 This variable is set if the user needs to run ansi2knr.
34 Currently, this is not supported, so we just abort.
36 aphostname (d_gethname.U):
37 This variable contains the command which can be used to compute the
38 host name. The command is fully qualified by its absolute path, to make
39 it safe when used by a process with super-user privileges.
41 api_revision (patchlevel.U):
42 The three variables, api_revision, api_version, and
43 api_subversion, specify the version of the oldest perl binary
44 compatible with the present perl. In a full version string
45 such as '5.6.1', api_revision is the '5'.
46 Prior to 5.5.640, the format was a floating point number,
48 perl.c:incpush() and lib/lib.pm will automatically search in
49 $sitelib/.. for older directories back to the limit specified
50 by these api_ variables. This is only useful if you have a
51 perl library directory tree structured like the default one.
52 See INSTALL for how this works. The versioned site_perl
53 directory was introduced in 5.005, so that is the lowest
54 possible value. The version list appropriate for the current
55 system is determined in inc_version_list.U.
56 XXX To do: Since compatibility can depend on compile time
57 options (such as bincompat, longlong, etc.) it should
58 (perhaps) be set by Configure, but currently it isn't.
59 Currently, we read a hard-wired value from patchlevel.h.
60 Perhaps what we ought to do is take the hard-wired value from
61 patchlevel.h but then modify it if the current Configure
62 options warrant. patchlevel.h then would use an #ifdef guard.
64 api_subversion (patchlevel.U):
65 The three variables, api_revision, api_version, and
66 api_subversion, specify the version of the oldest perl binary
67 compatible with the present perl. In a full version string
68 such as '5.6.1', api_subversion is the '1'. See api_revision for
71 api_version (patchlevel.U):
72 The three variables, api_revision, api_version, and
73 api_subversion, specify the version of the oldest perl binary
74 compatible with the present perl. In a full version string
75 such as '5.6.1', api_version is the '6'. See api_revision for
76 full details. As a special case, 5.5.0 is rendered in the
77 old-style as 5.005. (In the 5.005_0x maintenance series,
78 this was the only versioned directory in $sitelib.)
80 api_versionstring (patchlevel.U):
81 This variable combines api_revision, api_version, and
82 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
83 for use as a directory name. This is filesystem dependent.
86 This variable is used internally by Configure to determine the
87 full pathname (if any) of the ar program. After Configure runs,
88 the value is reset to a plain "ar" and is not useful.
91 This variable holds the name of the directory in which the user wants
92 to put architecture-dependent public library files for $package.
93 It is most often a local directory such as /usr/local/lib.
94 Programs using this variable must be prepared to deal
95 with filename expansion.
97 archlibexp (archlib.U):
98 This variable is the same as the archlib variable, but is
99 filename expanded at configuration time, for convenient use.
101 archname64 (use64bits.U):
102 This variable is used for the 64-bitness part of $archname.
104 archname (archname.U):
105 This variable is a short name to characterize the current
106 architecture. It is used mainly to construct the default archlib.
109 This variable defines any additional objects that must be linked
110 in with the program on this architecture. On unix, it is usually
111 empty. It is typically used to include emulations of unix calls
112 or other facilities. For perl on OS/2, for example, this would
116 This variable is used internally by Configure to determine the
117 full pathname (if any) of the awk program. After Configure runs,
118 the value is reset to a plain "awk" and is not useful.
121 The base revision level of this package, from the .package file.
124 This variable is defined but not used by Configure.
125 The value is a plain '' and is not useful.
128 This variable holds the name of the directory in which the user wants
129 to put publicly executable images for the package in question. It
130 is most often a local directory such as /usr/local/bin. Programs using
131 this variable must be prepared to deal with ~name substitution.
133 bincompat5005 (bincompat5005.U):
134 This variable contains y if this version of Perl should be
135 binary-compatible with Perl 5.005.
138 This is the same as the bin variable, but is filename expanded at
139 configuration time, for use in your makefiles.
142 This variable is used internally by Configure to determine the
143 full pathname (if any) of the bison program. After Configure runs,
144 the value is reset to a plain "bison" and is not useful.
147 This variable is used internally by Configure to determine the
148 full pathname (if any) of the byacc program. After Configure runs,
149 the value is reset to a plain "byacc" and is not useful.
151 byteorder (byteorder.U):
152 This variable holds the byte order. In the following, larger digits
153 indicate more significance. The variable byteorder is either 4321
154 on a big-endian machine, or 1234 on a little-endian, or 87654321
155 on a Cray ... or 3412 with weird order !
158 This variable contains the \c string if that is what causes the echo
159 command to suppress newline. Otherwise it is null. Correct usage is
160 $echo $n "prompt for a question: $c".
162 castflags (d_castneg.U):
163 This variable contains a flag that precise difficulties the
164 compiler has casting odd floating values to unsigned long:
166 1 = couldn't cast < 0
167 2 = couldn't cast >= 0x80000000
168 4 = couldn't cast in argument expression list
171 This variable is used internally by Configure to determine the
172 full pathname (if any) of the cat program. After Configure runs,
173 the value is reset to a plain "cat" and is not useful.
176 This variable holds the name of a command to execute a C compiler which
177 can resolve multiple global references that happen to have the same
178 name. Usual values are 'cc' and 'gcc'.
179 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
181 cccdlflags (dlsrc.U):
182 This variable contains any special flags that might need to be
183 passed with 'cc -c' to compile modules to be used to create a shared
184 library that will be used for dynamic loading. For hpux, this
185 should be +z. It is up to the makefile to use it.
188 This variable contains any special flags that might need to be
189 passed to cc to link with a shared library for dynamic loading.
190 It is up to the makefile to use it. For sunos 4.1, it should
194 This variable contains any additional C compiler flags desired by
195 the user. It is up to the Makefile to use this.
197 ccflags_uselargefiles (uselfs.U):
198 This variable contains the compiler flags needed by large file builds
199 and added to ccflags by hints files.
202 This can set either by hints files or by Configure. If using
203 gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
204 Some platforms, however, make good use of this by storing the
205 flavor of the C compiler being used here. For example if using
206 the Sun WorkShop suite, ccname will be 'workshop'.
208 ccsymbols (Cppsym.U):
209 The variable contains the symbols defined by the C compiler alone.
210 The symbols defined by cpp or by cc when it calls cpp are not in
211 this list, see cppsymbols and cppccsymbols.
212 The list is a space-separated list of symbol=value tokens.
214 ccversion (Checkcc.U):
215 This can set either by hints files or by Configure. If using
216 a (non-gcc) vendor cc, this variable may contain a version for
220 Login name of the person who ran the Configure script and answered the
221 questions. This is used to tag both config.sh and config_h.SH.
223 cf_email (cf_email.U):
224 Electronic mail address of the person who ran Configure. This can be
225 used by units that require the user's e-mail, like MailList.U.
228 Holds the output of the "date" command when the configuration file was
229 produced. This is used to tag both config.sh and config_h.SH.
231 charsize (charsize.U):
232 This variable contains the value of the CHARSIZE symbol, which
233 indicates to the C program how many bytes there are in a character.
236 This variable is defined but not used by Configure.
237 The value is a plain '' and is not useful.
240 This variable is defined but not used by Configure.
241 The value is a plain '' and is not useful.
244 This variable is defined but not used by Configure.
245 The value is a plain '' and is not useful.
247 clocktype (d_times.U):
248 This variable holds the type returned by times(). It can be long,
249 or clock_t on BSD sites (in which case <sys/types.h> should be
253 This variable is used internally by Configure to determine the
254 full pathname (if any) of the comm program. After Configure runs,
255 the value is reset to a plain "comm" and is not useful.
258 This variable is defined but not used by Configure.
259 The value is a plain '' and is not useful.
261 CONFIGDOTSH (Oldsyms.U):
262 This is set to 'true' in config.sh so that a shell script
263 sourcing config.sh can tell if it has been sourced already.
265 contains (contains.U):
266 This variable holds the command to do a grep with a proper return
267 status. On most sane systems it is simply "grep". On insane systems
268 it is a grep followed by a cat followed by a test. This variable
269 is primarily for the use of other Configure units.
272 This variable is used internally by Configure to determine the
273 full pathname (if any) of the cp program. After Configure runs,
274 the value is reset to a plain "cp" and is not useful.
277 This variable is defined but not used by Configure.
278 The value is a plain '' and is not useful.
281 This variable is used internally by Configure to determine the
282 full pathname (if any) of the cpp program. After Configure runs,
283 the value is reset to a plain "cpp" and is not useful.
285 cpp_stuff (cpp_stuff.U):
286 This variable contains an identification of the catenation mechanism
287 used by the C preprocessor.
289 cppccsymbols (Cppsym.U):
290 The variable contains the symbols defined by the C compiler
291 when it calls cpp. The symbols defined by the cc alone or cpp
292 alone are not in this list, see ccsymbols and cppsymbols.
293 The list is a space-separated list of symbol=value tokens.
295 cppflags (ccflags.U):
296 This variable holds the flags that will be passed to the C pre-
297 processor. It is up to the Makefile to use it.
299 cpplast (cppstdin.U):
300 This variable has the same functionality as cppminus, only it applies
301 to cpprun and not cppstdin.
303 cppminus (cppstdin.U):
304 This variable contains the second part of the string which will invoke
305 the C preprocessor on the standard input and produce to standard
306 output. This variable will have the value "-" if cppstdin needs
307 a minus to specify standard input, otherwise the value is "".
310 This variable contains the command which will invoke a C preprocessor
311 on standard input and put the output to stdout. It is guaranteed not
312 to be a wrapper and may be a null string if no preprocessor can be
313 made directly available. This preprocessor might be different from the
314 one used by the C compiler. Don't forget to append cpplast after the
315 preprocessor options.
317 cppstdin (cppstdin.U):
318 This variable contains the command which will invoke the C
319 preprocessor on standard input and put the output to stdout.
320 It is primarily used by other Configure units that ask about
321 preprocessor symbols.
323 cppsymbols (Cppsym.U):
324 The variable contains the symbols defined by the C preprocessor
325 alone. The symbols defined by cc or by cc when it calls cpp are
326 not in this list, see ccsymbols and cppccsymbols.
327 The list is a space-separated list of symbol=value tokens.
329 crosscompile (crosscompile.U):
330 This variable conditionally defines the CROSSCOMPILE symbol
331 which signifies that the build process is be a cross-compilation.
332 This is normally set by hints files or from Configure command line.
334 cryptlib (d_crypt.U):
335 This variable holds -lcrypt or the path to a libcrypt.a archive if
336 the crypt() function is not defined in the standard C library. It is
337 up to the Makefile to use this.
340 This variable is used internally by Configure to determine the
341 full pathname (if any) of the csh program. After Configure runs,
342 the value is reset to a plain "csh" and is not useful.
344 d__fwalk (d__fwalk.U):
345 This variable conditionally defines HAS__FWALK if _fwalk() is
346 available to apply a function to all the file handles.
348 d_access (d_access.U):
349 This variable conditionally defines HAS_ACCESS if the access() system
350 call is available to check for access permissions using real IDs.
352 d_accessx (d_accessx.U):
353 This variable conditionally defines the HAS_ACCESSX symbol, which
354 indicates to the C program that the accessx() routine is available.
357 This variable conditionally defines the HAS_ALARM symbol, which
358 indicates to the C program that the alarm() routine is available.
360 d_archlib (archlib.U):
361 This variable conditionally defines ARCHLIB to hold the pathname
362 of architecture-dependent library files for $package. If
363 $archlib is the same as $privlib, then this is set to undef.
366 This variable conditionally defines the HAS_ATOLF symbol, which
367 indicates to the C program that the atolf() routine is available.
370 This variable conditionally defines the HAS_ATOLL symbol, which
371 indicates to the C program that the atoll() routine is available.
373 d_attribut (d_attribut.U):
374 This variable conditionally defines HASATTRIBUTE, which
375 indicates the C compiler can check for function attributes,
376 such as printf formats.
379 This variable conditionally defines the HAS_BCMP symbol if
380 the bcmp() routine is available to compare strings.
383 This variable conditionally defines the HAS_BCOPY symbol if
384 the bcopy() routine is available to copy strings.
386 d_bincompat5005 (bincompat5005.U):
387 This variable conditionally defines BINCOMPAT5005 so that embed.h
388 can take special action if this version of Perl should be
389 binary-compatible with Perl 5.005. This is impossible for builds
390 that use features like threads and multiplicity it is always $undef
394 This symbol conditionally defines the symbol BSD when running on a
397 d_bsdgetpgrp (d_getpgrp.U):
398 This variable conditionally defines USE_BSD_GETPGRP if
399 getpgrp needs one arguments whereas USG one needs none.
401 d_bsdsetpgrp (d_setpgrp.U):
402 This variable conditionally defines USE_BSD_SETPGRP if
403 setpgrp needs two arguments whereas USG one needs none.
404 See also d_setpgid for a POSIX interface.
407 This variable conditionally defines the HAS_BZERO symbol if
408 the bzero() routine is available to set memory to 0.
410 d_casti32 (d_casti32.U):
411 This variable conditionally defines CASTI32, which indicates
412 whether the C compiler can cast large floats to 32-bit ints.
414 d_castneg (d_castneg.U):
415 This variable conditionally defines CASTNEG, which indicates
416 wether the C compiler can cast negative float to unsigned.
418 d_charvspr (d_vprintf.U):
419 This variable conditionally defines CHARVSPRINTF if this system
420 has vsprintf returning type (char*). The trend seems to be to
421 declare it as "int vsprintf()".
424 This variable conditionally defines the HAS_CHOWN symbol, which
425 indicates to the C program that the chown() routine is available.
427 d_chroot (d_chroot.U):
428 This variable conditionally defines the HAS_CHROOT symbol, which
429 indicates to the C program that the chroot() routine is available.
431 d_chsize (d_chsize.U):
432 This variable conditionally defines the CHSIZE symbol, which
433 indicates to the C program that the chsize() routine is available
434 to truncate files. You might need a -lx to get this routine.
436 d_closedir (d_closedir.U):
437 This variable conditionally defines HAS_CLOSEDIR if closedir() is
441 This variable conditionally defines the HASCONST symbol, which
442 indicates to the C program that this C compiler knows about the
446 This variable conditionally defines the CRYPT symbol, which
447 indicates to the C program that the crypt() routine is available
448 to encrypt passwords and the like.
451 This variable conditionally defines the CSH symbol, which
452 indicates to the C program that the C-shell exists.
454 d_cuserid (d_cuserid.U):
455 This variable conditionally defines the HAS_CUSERID symbol, which
456 indicates to the C program that the cuserid() routine is available
457 to get character login names.
459 d_dbl_dig (d_dbl_dig.U):
460 This variable conditionally defines d_dbl_dig if this system's
461 header files provide DBL_DIG, which is the number of significant
462 digits in a double precision number.
464 d_difftime (d_difftime.U):
465 This variable conditionally defines the HAS_DIFFTIME symbol, which
466 indicates to the C program that the difftime() routine is available.
468 d_dirnamlen (i_dirent.U):
469 This variable conditionally defines DIRNAMLEN, which indicates
470 to the C program that the length of directory entry names is
471 provided by a d_namelen field.
473 d_dlerror (d_dlerror.U):
474 This variable conditionally defines the HAS_DLERROR symbol, which
475 indicates to the C program that the dlerror() routine is available.
477 d_dlopen (d_dlopen.U):
478 This variable conditionally defines the HAS_DLOPEN symbol, which
479 indicates to the C program that the dlopen() routine is available.
481 d_dlsymun (d_dlsymun.U):
482 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
483 indicates that we need to prepend an underscore to the symbol
484 name before calling dlsym().
486 d_dosuid (d_dosuid.U):
487 This variable conditionally defines the symbol DOSUID, which
488 tells the C program that it should insert setuid emulation code
489 on hosts which have setuid #! scripts disabled.
491 d_drand48proto (d_drand48proto.U):
492 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
493 which indicates to the C program that the system provides
494 a prototype for the drand48() function. Otherwise, it is
495 up to the program to supply one.
498 This variable conditionally defines HAS_DUP2 if dup2() is
499 available to duplicate file descriptors.
501 d_eaccess (d_eaccess.U):
502 This variable conditionally defines the HAS_EACCESS symbol, which
503 indicates to the C program that the eaccess() routine is available.
505 d_endgrent (d_endgrent.U):
506 This variable conditionally defines the HAS_ENDGRENT symbol, which
507 indicates to the C program that the endgrent() routine is available
508 for sequential access of the group database.
510 d_endhent (d_endhent.U):
511 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
512 available to close whatever was being used for host queries.
514 d_endnent (d_endnent.U):
515 This variable conditionally defines HAS_ENDNETENT if endnetent() is
516 available to close whatever was being used for network queries.
518 d_endpent (d_endpent.U):
519 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
520 available to close whatever was being used for protocol queries.
522 d_endpwent (d_endpwent.U):
523 This variable conditionally defines the HAS_ENDPWENT symbol, which
524 indicates to the C program that the endpwent() routine is available
525 for sequential access of the passwd database.
527 d_endsent (d_endsent.U):
528 This variable conditionally defines HAS_ENDSERVENT if endservent() is
529 available to close whatever was being used for service queries.
531 d_eofnblk (nblock_io.U):
532 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
533 when reading from a non-blocking I/O source.
536 This variable conditionally defines the symbols EUNICE and VAX, which
537 alerts the C program that it must deal with ideosyncracies of VMS.
539 d_fchmod (d_fchmod.U):
540 This variable conditionally defines the HAS_FCHMOD symbol, which
541 indicates to the C program that the fchmod() routine is available
542 to change mode of opened files.
544 d_fchown (d_fchown.U):
545 This variable conditionally defines the HAS_FCHOWN symbol, which
546 indicates to the C program that the fchown() routine is available
547 to change ownership of opened files.
550 This variable conditionally defines the HAS_FCNTL symbol, and indicates
551 whether the fcntl() function exists
553 d_fcntl_can_lock (d_fcntl_can_lock.U):
554 This variable conditionally defines the FCNTL_CAN_LOCK symbol
555 and indicates whether file locking with fcntl() works.
557 d_fd_macros (d_fd_set.U):
558 This variable contains the eventual value of the HAS_FD_MACROS symbol,
559 which indicates if your C compiler knows about the macros which
560 manipulate an fd_set.
562 d_fd_set (d_fd_set.U):
563 This variable contains the eventual value of the HAS_FD_SET symbol,
564 which indicates if your C compiler knows about the fd_set typedef.
566 d_fds_bits (d_fd_set.U):
567 This variable contains the eventual value of the HAS_FDS_BITS symbol,
568 which indicates if your fd_set typedef contains the fds_bits member.
569 If you have an fd_set typedef, but the dweebs who installed it did
570 a half-fast job and neglected to provide the macros to manipulate
571 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
573 d_fgetpos (d_fgetpos.U):
574 This variable conditionally defines HAS_FGETPOS if fgetpos() is
575 available to get the file position indicator.
577 d_flexfnam (d_flexfnam.U):
578 This variable conditionally defines the FLEXFILENAMES symbol, which
579 indicates that the system supports filenames longer than 14 characters.
582 This variable conditionally defines HAS_FLOCK if flock() is
583 available to do file locking.
586 This variable conditionally defines the HAS_FORK symbol, which
587 indicates to the C program that the fork() routine is available.
589 d_fpathconf (d_pathconf.U):
590 This variable conditionally defines the HAS_FPATHCONF symbol, which
591 indicates to the C program that the pathconf() routine is available
592 to determine file-system related limits and options associated
593 with a given open file descriptor.
595 d_fpos64_t (d_fpos64_t.U):
596 This symbol will be defined if the C compiler supports fpos64_t.
598 d_frexpl (d_frexpl.U):
599 This variable conditionally defines the HAS_FREXPL symbol, which
600 indicates to the C program that the frexpl() routine is available.
602 d_fs_data_s (d_fs_data_s.U):
603 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
604 which indicates that the struct fs_data is supported.
606 d_fseeko (d_fseeko.U):
607 This variable conditionally defines the HAS_FSEEKO symbol, which
608 indicates to the C program that the fseeko() routine is available.
610 d_fsetpos (d_fsetpos.U):
611 This variable conditionally defines HAS_FSETPOS if fsetpos() is
612 available to set the file position indicator.
614 d_fstatfs (d_fstatfs.U):
615 This variable conditionally defines the HAS_FSTATFS symbol, which
616 indicates to the C program that the fstatfs() routine is available.
618 d_fstatvfs (d_statvfs.U):
619 This variable conditionally defines the HAS_FSTATVFS symbol, which
620 indicates to the C program that the fstatvfs() routine is available.
623 This variable conditionally defines the HAS_FSYNC symbol, which
624 indicates to the C program that the fsync() routine is available.
626 d_ftello (d_ftello.U):
627 This variable conditionally defines the HAS_FTELLO symbol, which
628 indicates to the C program that the ftello() routine is available.
631 This variable conditionally defines the HAS_FTIME symbol, which indicates
632 that the ftime() routine exists. The ftime() routine is basically
633 a sub-second accuracy clock.
635 d_Gconvert (d_gconvert.U):
636 This variable holds what Gconvert is defined as to convert
637 floating point numbers into strings. It could be 'gconvert'
638 or a more complex macro emulating gconvert with gcvt() or sprintf.
640 d_Gconvert='gconvert((x),(n),(t),(b))'
641 d_Gconvert='gcvt((x),(n),(b))'
642 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
644 d_getcwd (d_getcwd.U):
645 This variable conditionally defines the HAS_GETCWD symbol, which
646 indicates to the C program that the getcwd() routine is available
647 to get the current working directory.
649 d_getespwnam (d_getespwnam.U):
650 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
651 available to retrieve enchanced (shadow) password entries by name.
653 d_getfsstat (d_getfsstat.U):
654 This variable conditionally defines the HAS_GETFSSTAT symbol, which
655 indicates to the C program that the getfsstat() routine is available.
657 d_getgrent (d_getgrent.U):
658 This variable conditionally defines the HAS_GETGRENT symbol, which
659 indicates to the C program that the getgrent() routine is available
660 for sequential access of the group database.
662 d_getgrps (d_getgrps.U):
663 This variable conditionally defines the HAS_GETGROUPS symbol, which
664 indicates to the C program that the getgroups() routine is available
665 to get the list of process groups.
667 d_gethbyaddr (d_gethbyad.U):
668 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
669 indicates to the C program that the gethostbyaddr() routine is available
670 to look up hosts by their IP addresses.
672 d_gethbyname (d_gethbynm.U):
673 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
674 indicates to the C program that the gethostbyname() routine is available
675 to look up host names in some data base or other.
677 d_gethent (d_gethent.U):
678 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
679 available to look up host names in some data base or another.
681 d_gethname (d_gethname.U):
682 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
683 indicates to the C program that the gethostname() routine may be
684 used to derive the host name.
686 d_gethostprotos (d_gethostprotos.U):
687 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
688 which indicates to the C program that <netdb.h> supplies
689 prototypes for the various gethost*() functions.
690 See also netdbtype.U for probing for various netdb types.
692 d_getlogin (d_getlogin.U):
693 This variable conditionally defines the HAS_GETLOGIN symbol, which
694 indicates to the C program that the getlogin() routine is available
695 to get the login name.
697 d_getmnt (d_getmnt.U):
698 This variable conditionally defines the HAS_GETMNT symbol, which
699 indicates to the C program that the getmnt() routine is available
700 to retrieve one or more mount info blocks by filename.
702 d_getmntent (d_getmntent.U):
703 This variable conditionally defines the HAS_GETMNTENT symbol, which
704 indicates to the C program that the getmntent() routine is available
705 to iterate through mounted files to get their mount info.
707 d_getnbyaddr (d_getnbyad.U):
708 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
709 indicates to the C program that the getnetbyaddr() routine is available
710 to look up networks by their IP addresses.
712 d_getnbyname (d_getnbynm.U):
713 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
714 indicates to the C program that the getnetbyname() routine is available
715 to look up networks by their names.
717 d_getnent (d_getnent.U):
718 This variable conditionally defines HAS_GETNETENT if getnetent() is
719 available to look up network names in some data base or another.
721 d_getnetprotos (d_getnetprotos.U):
722 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
723 which indicates to the C program that <netdb.h> supplies
724 prototypes for the various getnet*() functions.
725 See also netdbtype.U for probing for various netdb types.
727 d_getpagsz (d_getpagsz.U):
728 This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
729 is available to get the system page size.
731 d_getpbyname (d_getprotby.U):
732 This variable conditionally defines the HAS_GETPROTOBYNAME
733 symbol, which indicates to the C program that the
734 getprotobyname() routine is available to look up protocols
737 d_getpbynumber (d_getprotby.U):
738 This variable conditionally defines the HAS_GETPROTOBYNUMBER
739 symbol, which indicates to the C program that the
740 getprotobynumber() routine is available to look up protocols
743 d_getpent (d_getpent.U):
744 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
745 available to look up protocols in some data base or another.
747 d_getpgid (d_getpgid.U):
748 This variable conditionally defines the HAS_GETPGID symbol, which
749 indicates to the C program that the getpgid(pid) function
750 is available to get the process group id.
752 d_getpgrp2 (d_getpgrp2.U):
753 This variable conditionally defines the HAS_GETPGRP2 symbol, which
754 indicates to the C program that the getpgrp2() (as in DG/UX) routine
755 is available to get the current process group.
757 d_getpgrp (d_getpgrp.U):
758 This variable conditionally defines HAS_GETPGRP if getpgrp() is
759 available to get the current process group.
761 d_getppid (d_getppid.U):
762 This variable conditionally defines the HAS_GETPPID symbol, which
763 indicates to the C program that the getppid() routine is available
764 to get the parent process ID.
766 d_getprior (d_getprior.U):
767 This variable conditionally defines HAS_GETPRIORITY if getpriority()
768 is available to get a process's priority.
770 d_getprotoprotos (d_getprotoprotos.U):
771 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
772 which indicates to the C program that <netdb.h> supplies
773 prototypes for the various getproto*() functions.
774 See also netdbtype.U for probing for various netdb types.
776 d_getprpwnam (d_getprpwnam.U):
777 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
778 available to retrieve protected (shadow) password entries by name.
780 d_getpwent (d_getpwent.U):
781 This variable conditionally defines the HAS_GETPWENT symbol, which
782 indicates to the C program that the getpwent() routine is available
783 for sequential access of the passwd database.
785 d_getsbyname (d_getsrvby.U):
786 This variable conditionally defines the HAS_GETSERVBYNAME
787 symbol, which indicates to the C program that the
788 getservbyname() routine is available to look up services
791 d_getsbyport (d_getsrvby.U):
792 This variable conditionally defines the HAS_GETSERVBYPORT
793 symbol, which indicates to the C program that the
794 getservbyport() routine is available to look up services
797 d_getsent (d_getsent.U):
798 This variable conditionally defines HAS_GETSERVENT if getservent() is
799 available to look up network services in some data base or another.
801 d_getservprotos (d_getservprotos.U):
802 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
803 which indicates to the C program that <netdb.h> supplies
804 prototypes for the various getserv*() functions.
805 See also netdbtype.U for probing for various netdb types.
807 d_getspnam (d_getspnam.U):
808 This variable conditionally defines HAS_GETSPNAM if getspnam() is
809 available to retrieve SysV shadow password entries by name.
811 d_gettimeod (d_ftime.U):
812 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
813 indicates that the gettimeofday() system call exists (to obtain a
814 sub-second accuracy clock). You should probably include <sys/resource.h>.
816 d_gnulibc (d_gnulibc.U):
817 Defined if we're dealing with the GNU C Library.
819 d_grpasswd (i_grp.U):
820 This variable conditionally defines GRPASSWD, which indicates
821 that struct group in <grp.h> contains gr_passwd.
823 d_hasmntopt (d_hasmntopt.U):
824 This variable conditionally defines the HAS_HASMNTOPT symbol, which
825 indicates to the C program that the hasmntopt() routine is available
826 to query the mount options of file systems.
829 This variable conditionally defines HAS_HTONL if htonl() and its
830 friends are available to do network order byte swapping.
833 This variable conditionally defines the HAS_ICONV symbol, which
834 indicates to the C program that the iconv() routine is available.
836 d_index (d_strchr.U):
837 This variable conditionally defines HAS_INDEX if index() and
838 rindex() are available for string searching.
840 d_inetaton (d_inetaton.U):
841 This variable conditionally defines the HAS_INET_ATON symbol, which
842 indicates to the C program that the inet_aton() function is available
843 to parse IP address "dotted-quad" strings.
845 d_int64_t (d_int64_t.U):
846 This symbol will be defined if the C compiler supports int64_t.
848 d_isascii (d_isascii.U):
849 This variable conditionally defines the HAS_ISASCII constant,
850 which indicates to the C program that isascii() is available.
853 This variable conditionally defines the HAS_ISNAN symbol, which
854 indicates to the C program that the isnan() routine is available.
856 d_isnanl (d_isnanl.U):
857 This variable conditionally defines the HAS_ISNANL symbol, which
858 indicates to the C program that the isnanl() routine is available.
860 d_killpg (d_killpg.U):
861 This variable conditionally defines the HAS_KILLPG symbol, which
862 indicates to the C program that the killpg() routine is available
863 to kill process groups.
865 d_lchown (d_lchown.U):
866 This variable conditionally defines the HAS_LCHOWN symbol, which
867 indicates to the C program that the lchown() routine is available
868 to operate on a symbolic link (instead of following the link).
870 d_ldbl_dig (d_ldbl_dig.U):
871 This variable conditionally defines d_ldbl_dig if this system's
872 header files provide LDBL_DIG, which is the number of significant
873 digits in a long double precision number.
876 This variable conditionally defines HAS_LINK if link() is
877 available to create hard links.
879 d_locconv (d_locconv.U):
880 This variable conditionally defines HAS_LOCALECONV if localeconv() is
881 available for numeric and monetary formatting conventions.
884 This variable conditionally defines HAS_LOCKF if lockf() is
885 available to do file locking.
887 d_longdbl (d_longdbl.U):
888 This variable conditionally defines HAS_LONG_DOUBLE if
889 the long double type is supported.
891 d_longlong (d_longlong.U):
892 This variable conditionally defines HAS_LONG_LONG if
893 the long long type is supported.
895 d_lseekproto (d_lseekproto.U):
896 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
897 which indicates to the C program that the system provides
898 a prototype for the lseek() function. Otherwise, it is
899 up to the program to supply one.
902 This variable conditionally defines HAS_LSTAT if lstat() is
903 available to do file stats on symbolic links.
905 d_madvise (d_madvise.U):
906 This variable conditionally defines HAS_MADVISE if madvise() is
907 available to map a file into memory.
910 This variable conditionally defines the HAS_MBLEN symbol, which
911 indicates to the C program that the mblen() routine is available
912 to find the number of bytes in a multibye character.
914 d_mbstowcs (d_mbstowcs.U):
915 This variable conditionally defines the HAS_MBSTOWCS symbol, which
916 indicates to the C program that the mbstowcs() routine is available
917 to convert a multibyte string into a wide character string.
919 d_mbtowc (d_mbtowc.U):
920 This variable conditionally defines the HAS_MBTOWC symbol, which
921 indicates to the C program that the mbtowc() routine is available
922 to convert multibyte to a wide character.
924 d_memchr (d_memchr.U):
925 This variable conditionally defines the HAS_MEMCHR symbol, which
926 indicates to the C program that the memchr() routine is available
927 to locate characters within a C string.
929 d_memcmp (d_memcmp.U):
930 This variable conditionally defines the HAS_MEMCMP symbol, which
931 indicates to the C program that the memcmp() routine is available
932 to compare blocks of memory.
934 d_memcpy (d_memcpy.U):
935 This variable conditionally defines the HAS_MEMCPY symbol, which
936 indicates to the C program that the memcpy() routine is available
937 to copy blocks of memory.
939 d_memmove (d_memmove.U):
940 This variable conditionally defines the HAS_MEMMOVE symbol, which
941 indicates to the C program that the memmove() routine is available
942 to copy potentatially overlapping blocks of memory.
944 d_memset (d_memset.U):
945 This variable conditionally defines the HAS_MEMSET symbol, which
946 indicates to the C program that the memset() routine is available
947 to set blocks of memory.
950 This variable conditionally defines the HAS_MKDIR symbol, which
951 indicates to the C program that the mkdir() routine is available
952 to create directories..
954 d_mkdtemp (d_mkdtemp.U):
955 This variable conditionally defines the HAS_MKDTEMP symbol, which
956 indicates to the C program that the mkdtemp() routine is available
957 to exclusively create a uniquely named temporary directory.
959 d_mkfifo (d_mkfifo.U):
960 This variable conditionally defines the HAS_MKFIFO symbol, which
961 indicates to the C program that the mkfifo() routine is available.
963 d_mkstemp (d_mkstemp.U):
964 This variable conditionally defines the HAS_MKSTEMP symbol, which
965 indicates to the C program that the mkstemp() routine is available
966 to exclusively create and open a uniquely named temporary file.
968 d_mkstemps (d_mkstemps.U):
969 This variable conditionally defines the HAS_MKSTEMPS symbol, which
970 indicates to the C program that the mkstemps() routine is available
971 to exclusively create and open a uniquely named (with a suffix)
974 d_mktime (d_mktime.U):
975 This variable conditionally defines the HAS_MKTIME symbol, which
976 indicates to the C program that the mktime() routine is available.
979 This variable conditionally defines HAS_MMAP if mmap() is
980 available to map a file into memory.
983 This variable conditionally defines the HAS_MODFL symbol, which
984 indicates to the C program that the modfl() routine is available.
986 d_mprotect (d_mprotect.U):
987 This variable conditionally defines HAS_MPROTECT if mprotect() is
988 available to modify the access protection of a memory mapped file.
991 This variable conditionally defines the HAS_MSG symbol, which
992 indicates that the entire msg*(2) library is present.
994 d_msg_ctrunc (d_socket.U):
995 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
996 which indicates that the MSG_CTRUNC is available. #ifdef is
997 not enough because it may be an enum, glibc has been known to do this.
999 d_msg_dontroute (d_socket.U):
1000 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
1001 which indicates that the MSG_DONTROUTE is available. #ifdef is
1002 not enough because it may be an enum, glibc has been known to do this.
1004 d_msg_oob (d_socket.U):
1005 This variable conditionally defines the HAS_MSG_OOB symbol,
1006 which indicates that the MSG_OOB is available. #ifdef is
1007 not enough because it may be an enum, glibc has been known to do this.
1009 d_msg_peek (d_socket.U):
1010 This variable conditionally defines the HAS_MSG_PEEK symbol,
1011 which indicates that the MSG_PEEK is available. #ifdef is
1012 not enough because it may be an enum, glibc has been known to do this.
1014 d_msg_proxy (d_socket.U):
1015 This variable conditionally defines the HAS_MSG_PROXY symbol,
1016 which indicates that the MSG_PROXY is available. #ifdef is
1017 not enough because it may be an enum, glibc has been known to do this.
1019 d_msgctl (d_msgctl.U):
1020 This variable conditionally defines the HAS_MSGCTL symbol, which
1021 indicates to the C program that the msgctl() routine is available.
1023 d_msgget (d_msgget.U):
1024 This variable conditionally defines the HAS_MSGGET symbol, which
1025 indicates to the C program that the msgget() routine is available.
1027 d_msgrcv (d_msgrcv.U):
1028 This variable conditionally defines the HAS_MSGRCV symbol, which
1029 indicates to the C program that the msgrcv() routine is available.
1031 d_msgsnd (d_msgsnd.U):
1032 This variable conditionally defines the HAS_MSGSND symbol, which
1033 indicates to the C program that the msgsnd() routine is available.
1035 d_msync (d_msync.U):
1036 This variable conditionally defines HAS_MSYNC if msync() is
1037 available to synchronize a mapped file.
1039 d_munmap (d_munmap.U):
1040 This variable conditionally defines HAS_MUNMAP if munmap() is
1041 available to unmap a region mapped by mmap().
1043 d_mymalloc (mallocsrc.U):
1044 This variable conditionally defines MYMALLOC in case other parts
1045 of the source want to take special action if MYMALLOC is used.
1046 This may include different sorts of profiling or error detection.
1049 This variable conditionally defines the HAS_NICE symbol, which
1050 indicates to the C program that the nice() routine is available.
1052 d_nv_preserves_uv (perlxv.U):
1053 This variable indicates whether a variable of type nvtype
1054 can preserve all the bits a variable of type uvtype.
1056 d_nv_preserves_uv_bits (perlxv.U):
1057 This variable indicates how many of bits type uvtype
1058 a variable nvtype can preserve.
1060 d_off64_t (d_off64_t.U):
1061 This symbol will be defined if the C compiler supports off64_t.
1063 d_old_pthread_create_joinable (d_pthrattrj.U):
1064 This variable conditionally defines pthread_create_joinable.
1065 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1067 d_oldpthreads (usethreads.U):
1068 This variable conditionally defines the OLD_PTHREADS_API symbol,
1069 and indicates that Perl should be built to use the old
1070 draft POSIX threads API. This is only potentially meaningful if
1073 d_oldsock (d_socket.U):
1074 This variable conditionally defines the OLDSOCKET symbol, which
1075 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1077 d_open3 (d_open3.U):
1078 This variable conditionally defines the HAS_OPEN3 manifest constant,
1079 which indicates to the C program that the 3 argument version of
1080 the open(2) function is available.
1082 d_pathconf (d_pathconf.U):
1083 This variable conditionally defines the HAS_PATHCONF symbol, which
1084 indicates to the C program that the pathconf() routine is available
1085 to determine file-system related limits and options associated
1086 with a given filename.
1088 d_pause (d_pause.U):
1089 This variable conditionally defines the HAS_PAUSE symbol, which
1090 indicates to the C program that the pause() routine is available
1091 to suspend a process until a signal is received.
1093 d_perl_otherlibdirs (otherlibdirs.U):
1094 This variable conditionally defines PERL_OTHERLIBDIRS, which
1095 contains a colon-separated set of paths for the perl binary to
1096 include in @INC. See also otherlibdirs.
1098 d_phostname (d_gethname.U):
1099 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1100 contains the shell command which, when fed to popen(), may be
1101 used to derive the host name.
1104 This variable conditionally defines the HAS_PIPE symbol, which
1105 indicates to the C program that the pipe() routine is available
1106 to create an inter-process channel.
1109 This variable conditionally defines the HAS_POLL symbol, which
1110 indicates to the C program that the poll() routine is available
1111 to poll active file descriptors.
1113 d_portable (d_portable.U):
1114 This variable conditionally defines the PORTABLE symbol, which
1115 indicates to the C program that it should not assume that it is
1116 running on the machine it was compiled on.
1118 d_PRId64 (quadfio.U):
1119 This variable conditionally defines the PERL_PRId64 symbol, which
1120 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1122 d_PRIeldbl (longdblfio.U):
1123 This variable conditionally defines the PERL_PRIfldbl symbol, which
1124 indiciates that stdio has a symbol to print long doubles.
1126 d_PRIEUldbl (longdblfio.U):
1127 This variable conditionally defines the PERL_PRIfldbl symbol, which
1128 indiciates that stdio has a symbol to print long doubles.
1129 The 'U' in the name is to separate this from d_PRIeldbl so that even
1130 case-blind systems can see the difference.
1132 d_PRIfldbl (longdblfio.U):
1133 This variable conditionally defines the PERL_PRIfldbl symbol, which
1134 indiciates that stdio has a symbol to print long doubles.
1136 d_PRIFUldbl (longdblfio.U):
1137 This variable conditionally defines the PERL_PRIfldbl symbol, which
1138 indiciates that stdio has a symbol to print long doubles.
1139 The 'U' in the name is to separate this from d_PRIfldbl so that even
1140 case-blind systems can see the difference.
1142 d_PRIgldbl (longdblfio.U):
1143 This variable conditionally defines the PERL_PRIfldbl symbol, which
1144 indiciates that stdio has a symbol to print long doubles.
1146 d_PRIGUldbl (longdblfio.U):
1147 This variable conditionally defines the PERL_PRIfldbl symbol, which
1148 indiciates that stdio has a symbol to print long doubles.
1149 The 'U' in the name is to separate this from d_PRIgldbl so that even
1150 case-blind systems can see the difference.
1152 d_PRIi64 (quadfio.U):
1153 This variable conditionally defines the PERL_PRIi64 symbol, which
1154 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1156 d_PRIo64 (quadfio.U):
1157 This variable conditionally defines the PERL_PRIo64 symbol, which
1158 indiciates that stdio has a symbol to print 64-bit octal numbers.
1160 d_PRIu64 (quadfio.U):
1161 This variable conditionally defines the PERL_PRIu64 symbol, which
1162 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1165 d_PRIx64 (quadfio.U):
1166 This variable conditionally defines the PERL_PRIx64 symbol, which
1167 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1169 d_PRIXU64 (quadfio.U):
1170 This variable conditionally defines the PERL_PRIXU64 symbol, which
1171 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1172 The 'U' in the name is to separate this from d_PRIx64 so that even
1173 case-blind systems can see the difference.
1175 d_pthread_yield (d_pthread_y.U):
1176 This variable conditionally defines the HAS_PTHREAD_YIELD
1177 symbol if the pthread_yield routine is available to yield
1178 the execution of the current thread.
1181 This variable conditionally defines PWAGE, which indicates
1182 that struct passwd contains pw_age.
1184 d_pwchange (i_pwd.U):
1185 This variable conditionally defines PWCHANGE, which indicates
1186 that struct passwd contains pw_change.
1188 d_pwclass (i_pwd.U):
1189 This variable conditionally defines PWCLASS, which indicates
1190 that struct passwd contains pw_class.
1192 d_pwcomment (i_pwd.U):
1193 This variable conditionally defines PWCOMMENT, which indicates
1194 that struct passwd contains pw_comment.
1196 d_pwexpire (i_pwd.U):
1197 This variable conditionally defines PWEXPIRE, which indicates
1198 that struct passwd contains pw_expire.
1200 d_pwgecos (i_pwd.U):
1201 This variable conditionally defines PWGECOS, which indicates
1202 that struct passwd contains pw_gecos.
1204 d_pwpasswd (i_pwd.U):
1205 This variable conditionally defines PWPASSWD, which indicates
1206 that struct passwd contains pw_passwd.
1208 d_pwquota (i_pwd.U):
1209 This variable conditionally defines PWQUOTA, which indicates
1210 that struct passwd contains pw_quota.
1212 d_qgcvt (d_qgcvt.U):
1213 This variable conditionally defines the HAS_QGCVT symbol, which
1214 indicates to the C program that the qgcvt() routine is available.
1216 d_quad (quadtype.U):
1217 This variable, if defined, tells that there's a 64-bit integer type,
1220 d_readdir (d_readdir.U):
1221 This variable conditionally defines HAS_READDIR if readdir() is
1222 available to read directory entries.
1224 d_readlink (d_readlink.U):
1225 This variable conditionally defines the HAS_READLINK symbol, which
1226 indicates to the C program that the readlink() routine is available
1227 to read the value of a symbolic link.
1229 d_rename (d_rename.U):
1230 This variable conditionally defines the HAS_RENAME symbol, which
1231 indicates to the C program that the rename() routine is available
1234 d_rewinddir (d_readdir.U):
1235 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1238 d_rmdir (d_rmdir.U):
1239 This variable conditionally defines HAS_RMDIR if rmdir() is
1240 available to remove directories.
1242 d_safebcpy (d_safebcpy.U):
1243 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1244 the bcopy() routine can do overlapping copies.
1246 d_safemcpy (d_safemcpy.U):
1247 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1248 the memcpy() routine can do overlapping copies.
1250 d_sanemcmp (d_sanemcmp.U):
1251 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1252 the memcpy() routine is available and can be used to compare relative
1253 magnitudes of chars with their high bits set.
1255 d_sbrkproto (d_sbrkproto.U):
1256 This variable conditionally defines the HAS_SBRK_PROTO symbol,
1257 which indicates to the C program that the system provides
1258 a prototype for the sbrk() function. Otherwise, it is
1259 up to the program to supply one.
1261 d_sched_yield (d_pthread_y.U):
1262 This variable conditionally defines the HAS_SCHED_YIELD
1263 symbol if the sched_yield routine is available to yield
1264 the execution of the current thread.
1266 d_scm_rights (d_socket.U):
1267 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1268 which indicates that the SCM_RIGHTS is available. #ifdef is
1269 not enough because it may be an enum, glibc has been known to do this.
1271 d_SCNfldbl (longdblfio.U):
1272 This variable conditionally defines the PERL_PRIfldbl symbol, which
1273 indiciates that stdio has a symbol to scan long doubles.
1275 d_seekdir (d_readdir.U):
1276 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1279 d_select (d_select.U):
1280 This variable conditionally defines HAS_SELECT if select() is
1281 available to select active file descriptors. A <sys/time.h>
1282 inclusion may be necessary for the timeout field.
1285 This variable conditionally defines the HAS_SEM symbol, which
1286 indicates that the entire sem*(2) library is present.
1288 d_semctl (d_semctl.U):
1289 This variable conditionally defines the HAS_SEMCTL symbol, which
1290 indicates to the C program that the semctl() routine is available.
1292 d_semctl_semid_ds (d_union_semun.U):
1293 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1294 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1296 d_semctl_semun (d_union_semun.U):
1297 This variable conditionally defines USE_SEMCTL_SEMUN, which
1298 indicates that union semun is to be used for semctl IPC_STAT.
1300 d_semget (d_semget.U):
1301 This variable conditionally defines the HAS_SEMGET symbol, which
1302 indicates to the C program that the semget() routine is available.
1304 d_semop (d_semop.U):
1305 This variable conditionally defines the HAS_SEMOP symbol, which
1306 indicates to the C program that the semop() routine is available.
1308 d_setegid (d_setegid.U):
1309 This variable conditionally defines the HAS_SETEGID symbol, which
1310 indicates to the C program that the setegid() routine is available
1311 to change the effective gid of the current program.
1313 d_seteuid (d_seteuid.U):
1314 This variable conditionally defines the HAS_SETEUID symbol, which
1315 indicates to the C program that the seteuid() routine is available
1316 to change the effective uid of the current program.
1318 d_setgrent (d_setgrent.U):
1319 This variable conditionally defines the HAS_SETGRENT symbol, which
1320 indicates to the C program that the setgrent() routine is available
1321 for initializing sequential access to the group database.
1323 d_setgrps (d_setgrps.U):
1324 This variable conditionally defines the HAS_SETGROUPS symbol, which
1325 indicates to the C program that the setgroups() routine is available
1326 to set the list of process groups.
1328 d_sethent (d_sethent.U):
1329 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1332 d_setlinebuf (d_setlnbuf.U):
1333 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1334 indicates to the C program that the setlinebuf() routine is available
1335 to change stderr or stdout from block-buffered or unbuffered to a
1338 d_setlocale (d_setlocale.U):
1339 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1340 available to handle locale-specific ctype implementations.
1342 d_setnent (d_setnent.U):
1343 This variable conditionally defines HAS_SETNETENT if setnetent() is
1346 d_setpent (d_setpent.U):
1347 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1350 d_setpgid (d_setpgid.U):
1351 This variable conditionally defines the HAS_SETPGID symbol if the
1352 setpgid(pid, gpid) function is available to set process group ID.
1354 d_setpgrp2 (d_setpgrp2.U):
1355 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1356 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1357 is available to set the current process group.
1359 d_setpgrp (d_setpgrp.U):
1360 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1361 available to set the current process group.
1363 d_setprior (d_setprior.U):
1364 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1365 is available to set a process's priority.
1367 d_setproctitle (d_setproctitle.U):
1368 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1369 which indicates to the C program that the setproctitle() routine
1372 d_setpwent (d_setpwent.U):
1373 This variable conditionally defines the HAS_SETPWENT symbol, which
1374 indicates to the C program that the setpwent() routine is available
1375 for initializing sequential access to the passwd database.
1377 d_setregid (d_setregid.U):
1378 This variable conditionally defines HAS_SETREGID if setregid() is
1379 available to change the real and effective gid of the current
1382 d_setresgid (d_setregid.U):
1383 This variable conditionally defines HAS_SETRESGID if setresgid() is
1384 available to change the real, effective and saved gid of the current
1387 d_setresuid (d_setreuid.U):
1388 This variable conditionally defines HAS_SETREUID if setresuid() is
1389 available to change the real, effective and saved uid of the current
1392 d_setreuid (d_setreuid.U):
1393 This variable conditionally defines HAS_SETREUID if setreuid() is
1394 available to change the real and effective uid of the current
1397 d_setrgid (d_setrgid.U):
1398 This variable conditionally defines the HAS_SETRGID symbol, which
1399 indicates to the C program that the setrgid() routine is available
1400 to change the real gid of the current program.
1402 d_setruid (d_setruid.U):
1403 This variable conditionally defines the HAS_SETRUID symbol, which
1404 indicates to the C program that the setruid() routine is available
1405 to change the real uid of the current program.
1407 d_setsent (d_setsent.U):
1408 This variable conditionally defines HAS_SETSERVENT if setservent() is
1411 d_setsid (d_setsid.U):
1412 This variable conditionally defines HAS_SETSID if setsid() is
1413 available to set the process group ID.
1415 d_setvbuf (d_setvbuf.U):
1416 This variable conditionally defines the HAS_SETVBUF symbol, which
1417 indicates to the C program that the setvbuf() routine is available
1418 to change buffering on an open stdio stream.
1421 This variable conditionally defines the USE_SFIO symbol,
1422 and indicates whether sfio is available (and should be used).
1425 This variable conditionally defines the HAS_SHM symbol, which
1426 indicates that the entire shm*(2) library is present.
1428 d_shmat (d_shmat.U):
1429 This variable conditionally defines the HAS_SHMAT symbol, which
1430 indicates to the C program that the shmat() routine is available.
1432 d_shmatprototype (d_shmat.U):
1433 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1434 symbol, which indicates that sys/shm.h has a prototype for
1437 d_shmctl (d_shmctl.U):
1438 This variable conditionally defines the HAS_SHMCTL symbol, which
1439 indicates to the C program that the shmctl() routine is available.
1441 d_shmdt (d_shmdt.U):
1442 This variable conditionally defines the HAS_SHMDT symbol, which
1443 indicates to the C program that the shmdt() routine is available.
1445 d_shmget (d_shmget.U):
1446 This variable conditionally defines the HAS_SHMGET symbol, which
1447 indicates to the C program that the shmget() routine is available.
1449 d_sigaction (d_sigaction.U):
1450 This variable conditionally defines the HAS_SIGACTION symbol, which
1451 indicates that the Vr4 sigaction() routine is available.
1453 d_sigprocmask (d_sigprocmask.U):
1454 This variable conditionally defines HAS_SIGPROCMASK
1455 if sigprocmask() is available to examine or change the signal mask
1456 of the calling process.
1458 d_sigsetjmp (d_sigsetjmp.U):
1459 This variable conditionally defines the HAS_SIGSETJMP symbol,
1460 which indicates that the sigsetjmp() routine is available to
1461 call setjmp() and optionally save the process's signal mask.
1463 d_sockatmark (d_sockatmark.U):
1464 This variable conditionally defines the HAS_SOCKATMARK symbol, which
1465 indicates to the C program that the sockatmark() routine is available.
1467 d_socket (d_socket.U):
1468 This variable conditionally defines HAS_SOCKET, which indicates
1469 that the BSD socket interface is supported.
1471 d_socklen_t (d_socklen_t.U):
1472 This symbol will be defined if the C compiler supports socklen_t.
1474 d_sockpair (d_socket.U):
1475 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1476 indicates that the BSD socketpair() is supported.
1478 d_socks5_init (d_socks5_init.U):
1479 This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
1480 indicates to the C program that the socks5_init() routine is available.
1482 d_sqrtl (d_sqrtl.U):
1483 This variable conditionally defines the HAS_SQRTL symbol, which
1484 indicates to the C program that the sqrtl() routine is available.
1486 d_statblks (d_statblks.U):
1487 This variable conditionally defines USE_STAT_BLOCKS
1488 if this system has a stat structure declaring
1489 st_blksize and st_blocks.
1491 d_statfs_f_flags (d_statfs_f_flags.U):
1492 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
1493 symbol, which indicates to struct statfs from has f_flags member.
1494 This kind of struct statfs is coming from sys/mount.h (BSD),
1495 not from sys/statfs.h (SYSV).
1497 d_statfs_s (d_statfs_s.U):
1498 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1499 which indicates that the struct statfs is supported.
1501 d_statvfs (d_statvfs.U):
1502 This variable conditionally defines the HAS_STATVFS symbol, which
1503 indicates to the C program that the statvfs() routine is available.
1505 d_stdio_cnt_lval (d_stdstdio.U):
1506 This variable conditionally defines STDIO_CNT_LVALUE if the
1507 FILE_cnt macro can be used as an lvalue.
1509 d_stdio_ptr_lval (d_stdstdio.U):
1510 This variable conditionally defines STDIO_PTR_LVALUE if the
1511 FILE_ptr macro can be used as an lvalue.
1513 d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
1514 This symbol is defined if using the FILE_ptr macro as an lvalue
1515 to increase the pointer by n leaves File_cnt(fp) unchanged.
1517 d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
1518 This symbol is defined if using the FILE_ptr macro as an lvalue
1519 to increase the pointer by n has the side effect of decreasing the
1520 value of File_cnt(fp) by n.
1522 d_stdio_stream_array (stdio_streams.U):
1523 This variable tells whether there is an array holding
1526 d_stdiobase (d_stdstdio.U):
1527 This variable conditionally defines USE_STDIO_BASE if this system
1528 has a FILE structure declaring a usable _base field (or equivalent)
1531 d_stdstdio (d_stdstdio.U):
1532 This variable conditionally defines USE_STDIO_PTR if this system
1533 has a FILE structure declaring usable _ptr and _cnt fields (or
1534 equivalent) in stdio.h.
1536 d_strchr (d_strchr.U):
1537 This variable conditionally defines HAS_STRCHR if strchr() and
1538 strrchr() are available for string searching.
1540 d_strcoll (d_strcoll.U):
1541 This variable conditionally defines HAS_STRCOLL if strcoll() is
1542 available to compare strings using collating information.
1544 d_strctcpy (d_strctcpy.U):
1545 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1546 indicates to the C program that this C compiler knows how to copy
1549 d_strerrm (d_strerror.U):
1550 This variable holds what Strerrr is defined as to translate an error
1551 code condition into an error message string. It could be 'strerror'
1552 or a more complex macro emulating strrror with sys_errlist[], or the
1553 "unknown" string when both strerror and sys_errlist are missing.
1555 d_strerror (d_strerror.U):
1556 This variable conditionally defines HAS_STRERROR if strerror() is
1557 available to translate error numbers to strings.
1559 d_strtod (d_strtod.U):
1560 This variable conditionally defines the HAS_STRTOD symbol, which
1561 indicates to the C program that the strtod() routine is available
1562 to provide better numeric string conversion than atof().
1564 d_strtol (d_strtol.U):
1565 This variable conditionally defines the HAS_STRTOL symbol, which
1566 indicates to the C program that the strtol() routine is available
1567 to provide better numeric string conversion than atoi() and friends.
1569 d_strtold (d_strtold.U):
1570 This variable conditionally defines the HAS_STRTOLD symbol, which
1571 indicates to the C program that the strtold() routine is available.
1573 d_strtoll (d_strtoll.U):
1574 This variable conditionally defines the HAS_STRTOLL symbol, which
1575 indicates to the C program that the strtoll() routine is available.
1577 d_strtoq (d_strtoq.U):
1578 This variable conditionally defines the HAS_STRTOQ symbol, which
1579 indicates to the C program that the strtoq() routine is available.
1581 d_strtoul (d_strtoul.U):
1582 This variable conditionally defines the HAS_STRTOUL symbol, which
1583 indicates to the C program that the strtoul() routine is available
1584 to provide conversion of strings to unsigned long.
1586 d_strtoull (d_strtoull.U):
1587 This variable conditionally defines the HAS_STRTOULL symbol, which
1588 indicates to the C program that the strtoull() routine is available.
1590 d_strtouq (d_strtouq.U):
1591 This variable conditionally defines the HAS_STRTOUQ symbol, which
1592 indicates to the C program that the strtouq() routine is available.
1594 d_strxfrm (d_strxfrm.U):
1595 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1596 available to transform strings.
1598 d_suidsafe (d_dosuid.U):
1599 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1600 if setuid scripts can be secure. This test looks in /dev/fd/.
1602 d_symlink (d_symlink.U):
1603 This variable conditionally defines the HAS_SYMLINK symbol, which
1604 indicates to the C program that the symlink() routine is available
1605 to create symbolic links.
1607 d_syscall (d_syscall.U):
1608 This variable conditionally defines HAS_SYSCALL if syscall() is
1609 available call arbitrary system calls.
1611 d_sysconf (d_sysconf.U):
1612 This variable conditionally defines the HAS_SYSCONF symbol, which
1613 indicates to the C program that the sysconf() routine is available
1614 to determine system related limits and options.
1616 d_sysernlst (d_strerror.U):
1617 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1618 is available to translate error numbers to the symbolic name.
1620 d_syserrlst (d_strerror.U):
1621 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1622 available to translate error numbers to strings.
1624 d_system (d_system.U):
1625 This variable conditionally defines HAS_SYSTEM if system() is
1626 available to issue a shell command.
1628 d_tcgetpgrp (d_tcgtpgrp.U):
1629 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1630 indicates to the C program that the tcgetpgrp() routine is available.
1631 to get foreground process group ID.
1633 d_tcsetpgrp (d_tcstpgrp.U):
1634 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1635 indicates to the C program that the tcsetpgrp() routine is available
1636 to set foreground process group ID.
1638 d_telldir (d_readdir.U):
1639 This variable conditionally defines HAS_TELLDIR if telldir() is
1642 d_telldirproto (d_telldirproto.U):
1643 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1644 which indicates to the C program that the system provides
1645 a prototype for the telldir() function. Otherwise, it is
1646 up to the program to supply one.
1649 This variable conditionally defines the HAS_TIME symbol, which indicates
1650 that the time() routine exists. The time() routine is normaly
1651 provided on UNIX systems.
1653 d_times (d_times.U):
1654 This variable conditionally defines the HAS_TIMES symbol, which indicates
1655 that the times() routine exists. The times() routine is normaly
1656 provided on UNIX systems. You may have to include <sys/times.h>.
1658 d_truncate (d_truncate.U):
1659 This variable conditionally defines HAS_TRUNCATE if truncate() is
1660 available to truncate files.
1662 d_tzname (d_tzname.U):
1663 This variable conditionally defines HAS_TZNAME if tzname[] is
1664 available to access timezone names.
1666 d_umask (d_umask.U):
1667 This variable conditionally defines the HAS_UMASK symbol, which
1668 indicates to the C program that the umask() routine is available.
1669 to set and get the value of the file creation mask.
1671 d_uname (d_gethname.U):
1672 This variable conditionally defines the HAS_UNAME symbol, which
1673 indicates to the C program that the uname() routine may be
1674 used to derive the host name.
1676 d_union_semun (d_union_semun.U):
1677 This variable conditionally defines HAS_UNION_SEMUN if the
1678 union semun is defined by including <sys/sem.h>.
1680 d_ustat (d_ustat.U):
1681 This variable conditionally defines HAS_USTAT if ustat() is
1682 available to query file system statistics by dev_t.
1684 d_vendorarch (vendorarch.U):
1685 This variable conditionally defined PERL_VENDORARCH.
1687 d_vendorbin (vendorbin.U):
1688 This variable conditionally defines PERL_VENDORBIN.
1690 d_vendorlib (vendorlib.U):
1691 This variable conditionally defines PERL_VENDORLIB.
1693 d_vfork (d_vfork.U):
1694 This variable conditionally defines the HAS_VFORK symbol, which
1695 indicates the vfork() routine is available.
1697 d_void_closedir (d_closedir.U):
1698 This variable conditionally defines VOID_CLOSEDIR if closedir()
1699 does not return a value.
1701 d_voidsig (d_voidsig.U):
1702 This variable conditionally defines VOIDSIG if this system
1703 declares "void (*signal(...))()" in signal.h. The old way was to
1704 declare it as "int (*signal(...))()".
1706 d_voidtty (i_sysioctl.U):
1707 This variable conditionally defines USE_IOCNOTTY to indicate that the
1708 ioctl() call with TIOCNOTTY should be used to void tty association.
1709 Otherwise (on USG probably), it is enough to close the standard file
1710 decriptors and do a setpgrp().
1712 d_volatile (d_volatile.U):
1713 This variable conditionally defines the HASVOLATILE symbol, which
1714 indicates to the C program that this C compiler knows about the
1715 volatile declaration.
1717 d_vprintf (d_vprintf.U):
1718 This variable conditionally defines the HAS_VPRINTF symbol, which
1719 indicates to the C program that the vprintf() routine is available
1720 to printf with a pointer to an argument list.
1722 d_wait4 (d_wait4.U):
1723 This variable conditionally defines the HAS_WAIT4 symbol, which
1724 indicates the wait4() routine is available.
1726 d_waitpid (d_waitpid.U):
1727 This variable conditionally defines HAS_WAITPID if waitpid() is
1728 available to wait for child process.
1730 d_wcstombs (d_wcstombs.U):
1731 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1732 indicates to the C program that the wcstombs() routine is available
1733 to convert wide character strings to multibyte strings.
1735 d_wctomb (d_wctomb.U):
1736 This variable conditionally defines the HAS_WCTOMB symbol, which
1737 indicates to the C program that the wctomb() routine is available
1738 to convert a wide character to a multibyte.
1741 This variable conditionally defines the symbol XENIX, which alerts
1742 the C program that it runs under Xenix.
1745 This variable is used internally by Configure to determine the
1746 full pathname (if any) of the date program. After Configure runs,
1747 the value is reset to a plain "date" and is not useful.
1749 db_hashtype (i_db.U):
1750 This variable contains the type of the hash structure element
1751 in the <db.h> header file. In older versions of DB, it was
1752 int, while in newer ones it is u_int32_t.
1754 db_prefixtype (i_db.U):
1755 This variable contains the type of the prefix structure element
1756 in the <db.h> header file. In older versions of DB, it was
1757 int, while in newer ones it is size_t.
1759 defvoidused (voidflags.U):
1760 This variable contains the default value of the VOIDUSED symbol (15).
1762 direntrytype (i_dirent.U):
1763 This symbol is set to 'struct direct' or 'struct dirent' depending on
1764 whether dirent is available or not. You should use this pseudo type to
1765 portably declare your directory entries.
1768 This variable contains the extension that is to be used for the
1769 dynamically loaded modules that perl generaties.
1772 This variable contains the name of the dynamic loading file that
1773 will be used with the package.
1775 doublesize (doublesize.U):
1776 This variable contains the value of the DOUBLESIZE symbol, which
1777 indicates to the C program how many bytes there are in a double.
1779 drand01 (randfunc.U):
1780 Indicates the macro to be used to generate normalized
1781 random numbers. Uses randfunc, often divided by
1782 (double) (((unsigned long) 1 << randbits)) in order to
1783 normalize the result.
1784 In C programs, the macro 'Drand01' is mapped to drand01.
1786 dynamic_ext (Extensions.U):
1787 This variable holds a list of XS extension files we want to
1788 link dynamically into the package. It is used by Makefile.
1790 eagain (nblock_io.U):
1791 This variable bears the symbolic errno code set by read() when no
1792 data is present on the file and non-blocking I/O was enabled (otherwise,
1793 read() blocks naturally).
1796 This variable conditionally defines EBCDIC if this
1797 system uses EBCDIC encoding. Among other things, this
1798 means that the character ranges are not contiguous.
1802 This variable is used internally by Configure to determine the
1803 full pathname (if any) of the echo program. After Configure runs,
1804 the value is reset to a plain "echo" and is not useful.
1807 This variable is used internally by Configure to determine the
1808 full pathname (if any) of the egrep program. After Configure runs,
1809 the value is reset to a plain "egrep" and is not useful.
1812 This variable is defined but not used by Configure.
1813 The value is a plain '' and is not useful.
1816 When running under Eunice this variable contains a command which will
1817 convert a shell script to the proper form of text file for it to be
1818 executable by the shell. On other systems it is a no-op.
1821 This is an old synonym for _exe.
1824 This variable is used internally by Configure to determine the
1825 full pathname (if any) of the expr program. After Configure runs,
1826 the value is reset to a plain "expr" and is not useful.
1828 extensions (Extensions.U):
1829 This variable holds a list of all extension files (both XS and
1830 non-xs linked into the package. It is propagated to Config.pm
1831 and is typically used to test whether a particular extesion
1834 fflushall (fflushall.U):
1835 This symbol, if defined, tells that to flush
1836 all pending stdio output one must loop through all
1837 the stdio file handles stored in an array and fflush them.
1838 Note that if fflushNULL is defined, fflushall will not
1839 even be probed for and will be left undefined.
1841 fflushNULL (fflushall.U):
1842 This symbol, if defined, tells that fflush(NULL) does flush
1843 all pending stdio output.
1846 This variable is defined but not used by Configure.
1847 The value is a plain '' and is not useful.
1849 firstmakefile (Unix.U):
1850 This variable defines the first file searched by make. On unix,
1851 it is makefile (then Makefile). On case-insensitive systems,
1852 it might be something else. This is only used to deal with
1853 convoluted make depend tricks.
1856 This variable is defined but not used by Configure.
1857 The value is a plain '' and is not useful.
1859 fpossize (fpossize.U):
1860 This variable contains the size of a fpostype in bytes.
1862 fpostype (fpostype.U):
1863 This variable defines Fpos_t to be something like fpos_t, long,
1864 uint, or whatever type is used to declare file positions in libc.
1866 freetype (mallocsrc.U):
1867 This variable contains the return type of free(). It is usually
1868 void, but occasionally int.
1871 This variable contains the full pathname to 'ar', whether or
1872 not the user has specified 'portability'. This is only used
1876 This variable contains the full pathname to 'csh', whether or
1877 not the user has specified 'portability'. This is only used
1878 in the compiled C program, and we assume that all systems which
1879 can share this executable will have the same full pathname to
1882 full_sed (Loc_sed.U):
1883 This variable contains the full pathname to 'sed', whether or
1884 not the user has specified 'portability'. This is only used
1885 in the compiled C program, and we assume that all systems which
1886 can share this executable will have the same full pathname to
1889 gccosandvers (gccvers.U):
1890 If GNU cc (gcc) is used, this variable the operating system and
1891 version used to compile the gcc. It is set to '' if not gcc,
1892 or if nothing useful can be parsed as the os version.
1894 gccversion (gccvers.U):
1895 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1896 indicate whether the compiler is version 1 or 2. This is used in
1897 setting some of the default cflags. It is set to '' if not gcc.
1900 This variable contains the format string used for printing a Gid_t.
1902 gidsign (gidsign.U):
1903 This variable contains the signedness of a gidtype.
1904 1 for unsigned, -1 for signed.
1906 gidsize (gidsize.U):
1907 This variable contains the size of a gidtype in bytes.
1909 gidtype (gidtype.U):
1910 This variable defines Gid_t to be something like gid_t, int,
1911 ushort, or whatever type is used to declare the return type
1912 of getgid(). Typically, it is the type of group ids in the kernel.
1915 This variable holds the general path (space-separated) used to
1916 find libraries. It may contain directories that do not exist on
1917 this platform, libpth is the cleaned-up version.
1920 This variable is used internally by Configure to determine the
1921 full pathname (if any) of the grep program. After Configure runs,
1922 the value is reset to a plain "grep" and is not useful.
1925 This variable contains a command that produces the text of the
1926 /etc/group file. This is normally "cat /etc/group", but can be
1927 "ypcat group" when NIS is used.
1928 On some systems, such as os390, there may be no equivalent
1929 command, in which case this variable is unset.
1931 groupstype (groupstype.U):
1932 This variable defines Groups_t to be something like gid_t, int,
1933 ushort, or whatever type is used for the second argument to
1934 getgroups() and setgroups(). Usually, this is the same as
1935 gidtype (gid_t), but sometimes it isn't.
1938 This variable is used internally by Configure to determine the
1939 full pathname (if any) of the gzip program. After Configure runs,
1940 the value is reset to a plain "gzip" and is not useful.
1942 h_fcntl (h_fcntl.U):
1943 This is variable gets set in various places to tell i_fcntl that
1944 <fcntl.h> should be included.
1946 h_sysfile (h_sysfile.U):
1947 This is variable gets set in various places to tell i_sys_file that
1948 <sys/file.h> should be included.
1951 Gives the type of hints used for previous answers. May be one of
1952 "default", "recommended" or "previous".
1955 This variable contains a command that produces the text of the
1956 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1957 "ypcat hosts" when NIS is used.
1958 On some systems, such as os390, there may be no equivalent
1959 command, in which case this variable is unset.
1962 This variable is the size of an I16 in bytes.
1965 This variable contains the C type used for Perl's I16.
1968 This variable is the size of an I32 in bytes.
1971 This variable contains the C type used for Perl's I32.
1974 This variable is the size of an I64 in bytes.
1977 This variable contains the C type used for Perl's I64.
1980 This variable is the size of an I8 in bytes.
1983 This variable contains the C type used for Perl's I8.
1985 i_arpainet (i_arpainet.U):
1986 This variable conditionally defines the I_ARPA_INET symbol,
1987 and indicates whether a C program should include <arpa/inet.h>.
1989 i_bsdioctl (i_sysioctl.U):
1990 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1991 indicates to the C program that <sys/bsdioctl.h> exists and should
1995 This variable conditionally defines the I_DB symbol, and indicates
1996 whether a C program may include Berkeley's DB include file <db.h>.
1999 This variable conditionally defines the I_DBM symbol, which
2000 indicates to the C program that <dbm.h> exists and should
2003 i_dirent (i_dirent.U):
2004 This variable conditionally defines I_DIRENT, which indicates
2005 to the C program that it should include <dirent.h>.
2008 This variable conditionally defines the I_DLD symbol, which
2009 indicates to the C program that <dld.h> (GNU dynamic loading)
2010 exists and should be included.
2012 i_dlfcn (i_dlfcn.U):
2013 This variable conditionally defines the I_DLFCN symbol, which
2014 indicates to the C program that <dlfcn.h> exists and should
2017 i_fcntl (i_fcntl.U):
2018 This variable controls the value of I_FCNTL (which tells
2019 the C program to include <fcntl.h>).
2021 i_float (i_float.U):
2022 This variable conditionally defines the I_FLOAT symbol, and indicates
2023 whether a C program may include <float.h> to get symbols like DBL_MAX
2024 or DBL_MIN, i.e. machine dependent floating point values.
2027 This variable conditionally defines the I_GDBM symbol, which
2028 indicates to the C program that <gdbm.h> exists and should
2032 This variable conditionally defines the I_GRP symbol, and indicates
2033 whether a C program should include <grp.h>.
2035 i_iconv (i_iconv.U):
2036 This variable conditionally defines the I_ICONV symbol, and indicates
2037 whether a C program should include <iconv.h>.
2039 i_ieeefp (i_ieeefp.U):
2040 This variable conditionally defines the I_IEEEFP symbol, and indicates
2041 whether a C program should include <ieeefp.h>.
2043 i_inttypes (i_inttypes.U):
2044 This variable conditionally defines the I_INTTYPES symbol,
2045 and indicates whether a C program should include <inttypes.h>.
2047 i_libutil (i_libutil.U):
2048 This variable conditionally defines the I_LIBUTIL symbol, and indicates
2049 whether a C program should include <libutil.h>.
2051 i_limits (i_limits.U):
2052 This variable conditionally defines the I_LIMITS symbol, and indicates
2053 whether a C program may include <limits.h> to get symbols like WORD_BIT
2056 i_locale (i_locale.U):
2057 This variable conditionally defines the I_LOCALE symbol,
2058 and indicates whether a C program should include <locale.h>.
2060 i_machcthr (i_machcthr.U):
2061 This variable conditionally defines the I_MACH_CTHREADS symbol,
2062 and indicates whether a C program should include <mach/cthreads.h>.
2064 i_malloc (i_malloc.U):
2065 This variable conditionally defines the I_MALLOC symbol, and indicates
2066 whether a C program should include <malloc.h>.
2069 This variable conditionally defines the I_MATH symbol, and indicates
2070 whether a C program may include <math.h>.
2072 i_memory (i_memory.U):
2073 This variable conditionally defines the I_MEMORY symbol, and indicates
2074 whether a C program should include <memory.h>.
2076 i_mntent (i_mntent.U):
2077 This variable conditionally defines the I_MNTENT symbol, and indicates
2078 whether a C program should include <mntent.h>.
2081 This variable conditionally defines the I_NDBM symbol, which
2082 indicates to the C program that <ndbm.h> exists and should
2085 i_netdb (i_netdb.U):
2086 This variable conditionally defines the I_NETDB symbol, and indicates
2087 whether a C program should include <netdb.h>.
2089 i_neterrno (i_neterrno.U):
2090 This variable conditionally defines the I_NET_ERRNO symbol, which
2091 indicates to the C program that <net/errno.h> exists and should
2094 i_netinettcp (i_netinettcp.U):
2095 This variable conditionally defines the I_NETINET_TCP symbol,
2096 and indicates whether a C program should include <netinet/tcp.h>.
2099 This variable conditionally defines I_NETINET_IN, which indicates
2100 to the C program that it should include <netinet/in.h>. Otherwise,
2101 you may try <sys/in.h>.
2104 This variable conditionally defines the I_POLL symbol, and indicates
2105 whether a C program should include <poll.h>.
2108 This variable conditionally defines the I_PROT symbol, and indicates
2109 whether a C program should include <prot.h>.
2111 i_pthread (i_pthread.U):
2112 This variable conditionally defines the I_PTHREAD symbol,
2113 and indicates whether a C program should include <pthread.h>.
2116 This variable conditionally defines I_PWD, which indicates
2117 to the C program that it should include <pwd.h>.
2119 i_rpcsvcdbm (i_dbm.U):
2120 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2121 indicates to the C program that <rpcsvc/dbm.h> exists and should
2122 be included. Some System V systems might need this instead of <dbm.h>.
2125 This variable conditionally defines the I_SFIO symbol,
2126 and indicates whether a C program should include <sfio.h>.
2128 i_sgtty (i_termio.U):
2129 This variable conditionally defines the I_SGTTY symbol, which
2130 indicates to the C program that it should include <sgtty.h> rather
2133 i_shadow (i_shadow.U):
2134 This variable conditionally defines the I_SHADOW symbol, and indicates
2135 whether a C program should include <shadow.h>.
2137 i_socks (i_socks.U):
2138 This variable conditionally defines the I_SOCKS symbol, and indicates
2139 whether a C program should include <socks.h>.
2141 i_stdarg (i_varhdr.U):
2142 This variable conditionally defines the I_STDARG symbol, which
2143 indicates to the C program that <stdarg.h> exists and should
2146 i_stddef (i_stddef.U):
2147 This variable conditionally defines the I_STDDEF symbol, which
2148 indicates to the C program that <stddef.h> exists and should
2151 i_stdlib (i_stdlib.U):
2152 This variable conditionally defines the I_STDLIB symbol, which
2153 indicates to the C program that <stdlib.h> exists and should
2156 i_string (i_string.U):
2157 This variable conditionally defines the I_STRING symbol, which
2158 indicates that <string.h> should be included rather than <strings.h>.
2160 i_sunmath (i_sunmath.U):
2161 This variable conditionally defines the I_SUNMATH symbol, and indicates
2162 whether a C program should include <sunmath.h>.
2164 i_sysaccess (i_sysaccess.U):
2165 This variable conditionally defines the I_SYS_ACCESS symbol,
2166 and indicates whether a C program should include <sys/access.h>.
2168 i_sysdir (i_sysdir.U):
2169 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2170 whether a C program should include <sys/dir.h>.
2172 i_sysfile (i_sysfile.U):
2173 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2174 whether a C program should include <sys/file.h> to get R_OK and friends.
2176 i_sysfilio (i_sysioctl.U):
2177 This variable conditionally defines the I_SYS_FILIO symbol, which
2178 indicates to the C program that <sys/filio.h> exists and should
2179 be included in preference to <sys/ioctl.h>.
2182 This variable conditionally defines I_SYS_IN, which indicates
2183 to the C program that it should include <sys/in.h> instead of
2186 i_sysioctl (i_sysioctl.U):
2187 This variable conditionally defines the I_SYS_IOCTL symbol, which
2188 indicates to the C program that <sys/ioctl.h> exists and should
2191 i_syslog (i_syslog.U):
2192 This variable conditionally defines the I_SYSLOG symbol,
2193 and indicates whether a C program should include <syslog.h>.
2195 i_sysmman (i_sysmman.U):
2196 This variable conditionally defines the I_SYS_MMAN symbol, and
2197 indicates whether a C program should include <sys/mman.h>.
2199 i_sysmode (i_sysmode.U):
2200 This variable conditionally defines the I_SYSMODE symbol,
2201 and indicates whether a C program should include <sys/mode.h>.
2203 i_sysmount (i_sysmount.U):
2204 This variable conditionally defines the I_SYSMOUNT symbol,
2205 and indicates whether a C program should include <sys/mount.h>.
2207 i_sysndir (i_sysndir.U):
2208 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2209 whether a C program should include <sys/ndir.h>.
2211 i_sysparam (i_sysparam.U):
2212 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2213 whether a C program should include <sys/param.h>.
2215 i_sysresrc (i_sysresrc.U):
2216 This variable conditionally defines the I_SYS_RESOURCE symbol,
2217 and indicates whether a C program should include <sys/resource.h>.
2219 i_syssecrt (i_syssecrt.U):
2220 This variable conditionally defines the I_SYS_SECURITY symbol,
2221 and indicates whether a C program should include <sys/security.h>.
2223 i_sysselct (i_sysselct.U):
2224 This variable conditionally defines I_SYS_SELECT, which indicates
2225 to the C program that it should include <sys/select.h> in order to
2226 get the definition of struct timeval.
2228 i_syssockio (i_sysioctl.U):
2229 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2230 C program that socket ioctl codes may be found in <sys/sockio.h>
2231 instead of <sys/ioctl.h>.
2233 i_sysstat (i_sysstat.U):
2234 This variable conditionally defines the I_SYS_STAT symbol,
2235 and indicates whether a C program should include <sys/stat.h>.
2237 i_sysstatfs (i_sysstatfs.U):
2238 This variable conditionally defines the I_SYSSTATFS symbol,
2239 and indicates whether a C program should include <sys/statfs.h>.
2241 i_sysstatvfs (i_sysstatvfs.U):
2242 This variable conditionally defines the I_SYSSTATVFS symbol,
2243 and indicates whether a C program should include <sys/statvfs.h>.
2245 i_systime (i_time.U):
2246 This variable conditionally defines I_SYS_TIME, which indicates
2247 to the C program that it should include <sys/time.h>.
2249 i_systimek (i_time.U):
2250 This variable conditionally defines I_SYS_TIME_KERNEL, which
2251 indicates to the C program that it should include <sys/time.h>
2252 with KERNEL defined.
2254 i_systimes (i_systimes.U):
2255 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2256 whether a C program should include <sys/times.h>.
2258 i_systypes (i_systypes.U):
2259 This variable conditionally defines the I_SYS_TYPES symbol,
2260 and indicates whether a C program should include <sys/types.h>.
2262 i_sysuio (i_sysuio.U):
2263 This variable conditionally defines the I_SYSUIO symbol, and indicates
2264 whether a C program should include <sys/uio.h>.
2266 i_sysun (i_sysun.U):
2267 This variable conditionally defines I_SYS_UN, which indicates
2268 to the C program that it should include <sys/un.h> to get UNIX
2269 domain socket definitions.
2271 i_sysutsname (i_sysutsname.U):
2272 This variable conditionally defines the I_SYSUTSNAME symbol,
2273 and indicates whether a C program should include <sys/utsname.h>.
2275 i_sysvfs (i_sysvfs.U):
2276 This variable conditionally defines the I_SYSVFS symbol,
2277 and indicates whether a C program should include <sys/vfs.h>.
2279 i_syswait (i_syswait.U):
2280 This variable conditionally defines I_SYS_WAIT, which indicates
2281 to the C program that it should include <sys/wait.h>.
2283 i_termio (i_termio.U):
2284 This variable conditionally defines the I_TERMIO symbol, which
2285 indicates to the C program that it should include <termio.h> rather
2288 i_termios (i_termio.U):
2289 This variable conditionally defines the I_TERMIOS symbol, which
2290 indicates to the C program that the POSIX <termios.h> file is
2294 This variable conditionally defines I_TIME, which indicates
2295 to the C program that it should include <time.h>.
2297 i_unistd (i_unistd.U):
2298 This variable conditionally defines the I_UNISTD symbol, and indicates
2299 whether a C program should include <unistd.h>.
2301 i_ustat (i_ustat.U):
2302 This variable conditionally defines the I_USTAT symbol, and indicates
2303 whether a C program should include <ustat.h>.
2305 i_utime (i_utime.U):
2306 This variable conditionally defines the I_UTIME symbol, and indicates
2307 whether a C program should include <utime.h>.
2309 i_values (i_values.U):
2310 This variable conditionally defines the I_VALUES symbol, and indicates
2311 whether a C program may include <values.h> to get symbols like MAXLONG
2314 i_varargs (i_varhdr.U):
2315 This variable conditionally defines I_VARARGS, which indicates
2316 to the C program that it should include <varargs.h>.
2318 i_varhdr (i_varhdr.U):
2319 Contains the name of the header to be included to get va_dcl definition.
2320 Typically one of varargs.h or stdarg.h.
2322 i_vfork (i_vfork.U):
2323 This variable conditionally defines the I_VFORK symbol, and indicates
2324 whether a C program should include vfork.h.
2326 ignore_versioned_solibs (libs.U):
2327 This variable should be non-empty if non-versioned shared
2328 libraries (libfoo.so.x.y) are to be ignored (because they
2329 cannot be linked against).
2331 inc_version_list (inc_version_list.U):
2332 This variable specifies the list of subdirectories in over
2333 which perl.c:incpush() and lib/lib.pm will automatically
2334 search when adding directories to @INC. The elements in
2335 the list are separated by spaces. This is only useful
2336 if you have a perl library directory tree structured like the
2337 default one. See INSTALL for how this works. The versioned
2338 site_perl directory was introduced in 5.005, so that is the
2339 lowest possible value.
2341 inc_version_list_init (inc_version_list.U):
2342 This variable holds the same list as inc_version_list, but
2343 each item is enclosed in double quotes and separated by commas,
2344 suitable for use in the PERL_INC_VERSION_LIST initialization.
2347 This variable must preceed the normal include path to get hte
2348 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2349 Value can be "" or "/bsd43" on mips.
2352 This variable is defined but not used by Configure.
2353 The value is a plain '' and is not useful.
2355 installarchlib (archlib.U):
2356 This variable is really the same as archlibexp but may differ on
2357 those systems using AFS. For extra portability, only this variable
2358 should be used in makefiles.
2361 This variable is the same as binexp unless AFS is running in which case
2362 the user is explicitely prompted for it. This variable should always
2363 be used in your makefiles for maximum portability.
2365 installman1dir (man1dir.U):
2366 This variable is really the same as man1direxp, unless you are using
2367 AFS in which case it points to the read/write location whereas
2368 man1direxp only points to the read-only access location. For extra
2369 portability, you should only use this variable within your makefiles.
2371 installman3dir (man3dir.U):
2372 This variable is really the same as man3direxp, unless you are using
2373 AFS in which case it points to the read/write location whereas
2374 man3direxp only points to the read-only access location. For extra
2375 portability, you should only use this variable within your makefiles.
2377 installprefix (installprefix.U):
2378 This variable holds the name of the directory below which
2379 "make install" will install the package. For most users, this
2380 is the same as prefix. However, it is useful for
2381 installing the software into a different (usually temporary)
2382 location after which it can be bundled up and moved somehow
2383 to the final location specified by prefix.
2385 installprefixexp (installprefix.U):
2386 This variable holds the full absolute path of installprefix
2387 with all ~-expansion done.
2389 installprivlib (privlib.U):
2390 This variable is really the same as privlibexp but may differ on
2391 those systems using AFS. For extra portability, only this variable
2392 should be used in makefiles.
2394 installscript (scriptdir.U):
2395 This variable is usually the same as scriptdirexp, unless you are on
2396 a system running AFS, in which case they may differ slightly. You
2397 should always use this variable within your makefiles for portability.
2399 installsitearch (sitearch.U):
2400 This variable is really the same as sitearchexp but may differ on
2401 those systems using AFS. For extra portability, only this variable
2402 should be used in makefiles.
2404 installsitebin (sitebin.U):
2405 This variable is usually the same as sitebinexp, unless you are on
2406 a system running AFS, in which case they may differ slightly. You
2407 should always use this variable within your makefiles for portability.
2409 installsitelib (sitelib.U):
2410 This variable is really the same as sitelibexp but may differ on
2411 those systems using AFS. For extra portability, only this variable
2412 should be used in makefiles.
2414 installstyle (installstyle.U):
2415 This variable describes the "style" of the perl installation.
2416 This is intended to be useful for tools that need to
2417 manipulate entire perl distributions. Perl itself doesn't use
2418 this to find its libraries -- the library directories are
2419 stored directly in Config.pm. Currently, there are only two
2420 styles: "lib" and "lib/perl5". The default library locations
2421 (e.g. privlib, sitelib) are either $prefix/lib or
2422 $prefix/lib/perl5. The former is useful if $prefix is a
2423 directory dedicated to perl (e.g. /opt/perl), while the latter
2424 is useful if $prefix is shared by many packages, e.g. if
2426 This may later be extended to include other information, so
2427 be careful with pattern-matching on the results.
2428 For compatibility with perl5.005 and earlier, the default
2429 setting is based on whether or not $prefix contains the string
2432 installusrbinperl (instubperl.U):
2433 This variable tells whether Perl should be installed also as
2434 /usr/bin/perl in addition to
2437 installvendorarch (vendorarch.U):
2438 This variable is really the same as vendorarchexp but may differ on
2439 those systems using AFS. For extra portability, only this variable
2440 should be used in makefiles.
2442 installvendorbin (vendorbin.U):
2443 This variable is really the same as vendorbinexp but may differ on
2444 those systems using AFS. For extra portability, only this variable
2445 should be used in makefiles.
2447 installvendorlib (vendorlib.U):
2448 This variable is really the same as vendorlibexp but may differ on
2449 those systems using AFS. For extra portability, only this variable
2450 should be used in makefiles.
2452 intsize (intsize.U):
2453 This variable contains the value of the INTSIZE symbol, which
2454 indicates to the C program how many bytes there are in an int.
2456 issymlink (issymlink.U):
2457 This variable holds the test command to test for a symbolic link
2458 (if they are supported). Typical values include 'test -h' and
2461 ivdformat (perlxvf.U):
2462 This variable contains the format string used for printing
2463 a Perl IV as a signed decimal integer.
2466 This variable is the size of an IV in bytes.
2469 This variable contains the C type used for Perl's IV.
2471 known_extensions (Extensions.U):
2472 This variable holds a list of all XS extensions included in
2476 This variable is defined but not used by Configure.
2477 The value is a plain '' and is not useful.
2480 This variable indicates the program to be used to link
2481 libraries for dynamic loading. On some systems, it is 'ld'.
2482 On ELF systems, it should be $cc. Mostly, we'll try to respect
2483 the hint file setting.
2485 lddlflags (dlsrc.U):
2486 This variable contains any special flags that might need to be
2487 passed to $ld to create a shared library suitable for dynamic
2488 loading. It is up to the makefile to use it. For hpux, it
2489 should be '-b'. For sunos 4.1, it is empty.
2491 ldflags (ccflags.U):
2492 This variable contains any additional C loader flags desired by
2493 the user. It is up to the Makefile to use this.
2495 ldflags_uselargefiles (uselfs.U):
2496 This variable contains the loader flags needed by large file builds
2497 and added to ldflags by hints files.
2499 ldlibpthname (libperl.U):
2500 This variable holds the name of the shared library
2501 search path, often LD_LIBRARY_PATH. To get an empty
2502 string, the hints file must set this to 'none'.
2505 This variable is used internally by Configure to determine the
2506 full pathname (if any) of the less program. After Configure runs,
2507 the value is reset to a plain "less" and is not useful.
2510 This is an old synonym for _a.
2513 This variable contains the location of the C library.
2515 libperl (libperl.U):
2516 The perl executable is obtained by linking perlmain.c with
2517 libperl, any static extensions (usually just DynaLoader),
2518 and any other libraries needed on this system. libperl
2519 is usually libperl.a, but can also be libperl.so.xxx if
2520 the user wishes to build a perl executable with a shared
2524 This variable holds the general path (space-separated) used to find
2525 libraries. It is intended to be used by other units.
2528 This variable holds the additional libraries we want to use.
2529 It is up to the Makefile to deal with it.
2532 This variable holds the directory names aka dirnames of the libraries
2533 we found and accepted, duplicates are removed.
2536 This variable holds the filenames aka basenames of the libraries
2537 we found and accepted.
2540 This variable holds the full pathnames of the libraries
2541 we found and accepted.
2544 This variable holds the directory names probed for libraries.
2546 libswanted (Myinit.U):
2547 This variable holds a list of all the libraries we want to
2548 search. The order is chosen to pick up the c library
2549 ahead of ucb or bsd libraries for SVR4.
2551 libswanted_uselargefiles (uselfs.U):
2552 This variable contains the libraries needed by large file builds
2553 and added to ldflags by hints files. It is a space separated list
2554 of the library names without the "lib" prefix or any suffix, just
2558 This variable is defined but not used by Configure.
2559 The value is a plain '' and is not useful.
2562 This variable is defined but not used by Configure.
2563 The value is a plain '' and is not useful.
2565 lkflags (ccflags.U):
2566 This variable contains any additional C partial linker flags desired by
2567 the user. It is up to the Makefile to use this.
2570 This variable is used internally by Configure to determine the
2571 full pathname (if any) of the ln program. After Configure runs,
2572 the value is reset to a plain "ln" and is not useful.
2575 This variable holds the name of the command to make
2576 symbolic links (if they are supported). It can be used
2577 in the Makefile. It is either 'ln -s' or 'ln'
2579 locincpth (ccflags.U):
2580 This variable contains a list of additional directories to be
2581 searched by the compiler. The appropriate '-I' directives will
2582 be added to ccflags. This is intended to simplify setting
2583 local directories from the Configure command line.
2584 It's not much, but it parallels the loclibpth stuff in libpth.U.
2586 loclibpth (libpth.U):
2587 This variable holds the paths (space-separated) used to find local
2588 libraries. It is prepended to libpth, and is intended to be easily
2589 set from the command line.
2591 longdblsize (d_longdbl.U):
2592 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2593 indicates to the C program how many bytes there are in a long double,
2594 if this system supports long doubles.
2596 longlongsize (d_longlong.U):
2597 This variable contains the value of the LONGLONGSIZE symbol, which
2598 indicates to the C program how many bytes there are in a long long,
2599 if this system supports long long.
2601 longsize (intsize.U):
2602 This variable contains the value of the LONGSIZE symbol, which
2603 indicates to the C program how many bytes there are in a long.
2606 This variable is defined but not used by Configure.
2607 The value is a plain '' and is not useful.
2610 This variable is defined but not used by Configure.
2611 The value is a plain '' and is not useful.
2614 This variable is used internally by Configure to determine the
2615 full pathname (if any) of the ls program. After Configure runs,
2616 the value is reset to a plain "ls" and is not useful.
2618 lseeksize (lseektype.U):
2619 This variable defines lseektype to be something like off_t, long,
2620 or whatever type is used to declare lseek offset's type in the
2621 kernel (which also appears to be lseek's return type).
2623 lseektype (lseektype.U):
2624 This variable defines lseektype to be something like off_t, long,
2625 or whatever type is used to declare lseek offset's type in the
2626 kernel (which also appears to be lseek's return type).
2629 This variable is defined but not used by Configure.
2630 The value is a plain '' and is not useful.
2633 This variable is defined but not used by Configure.
2634 The value is a plain '' and is not useful.
2637 This variable is used internally by Configure to determine the
2638 full pathname (if any) of the make program. After Configure runs,
2639 the value is reset to a plain "make" and is not useful.
2641 make_set_make (make.U):
2642 Some versions of 'make' set the variable MAKE. Others do not.
2643 This variable contains the string to be included in Makefile.SH
2644 so that MAKE is set if needed, and not if not needed.
2645 Possible values are:
2646 make_set_make='#' # If your make program handles this for you,
2647 make_set_make="MAKE=$make" # if it doesn't.
2648 I used a comment character so that we can distinguish a
2649 'set' value (from a previous config.sh or Configure '-D' option)
2650 from an uncomputed value.
2652 mallocobj (mallocsrc.U):
2653 This variable contains the name of the malloc.o that this package
2654 generates, if that malloc.o is preferred over the system malloc.
2655 Otherwise the value is null. This variable is intended for generating
2656 Makefiles. See mallocsrc.
2658 mallocsrc (mallocsrc.U):
2659 This variable contains the name of the malloc.c that comes with
2660 the package, if that malloc.c is preferred over the system malloc.
2661 Otherwise the value is null. This variable is intended for generating
2664 malloctype (mallocsrc.U):
2665 This variable contains the kind of ptr returned by malloc and realloc.
2667 man1dir (man1dir.U):
2668 This variable contains the name of the directory in which manual
2669 source pages are to be put. It is the responsibility of the
2670 Makefile.SH to get the value of this into the proper command.
2671 You must be prepared to do the ~name expansion yourself.
2673 man1direxp (man1dir.U):
2674 This variable is the same as the man1dir variable, but is filename
2675 expanded at configuration time, for convenient use in makefiles.
2677 man1ext (man1dir.U):
2678 This variable contains the extension that the manual page should
2679 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2682 man3dir (man3dir.U):
2683 This variable contains the name of the directory in which manual
2684 source pages are to be put. It is the responsibility of the
2685 Makefile.SH to get the value of this into the proper command.
2686 You must be prepared to do the ~name expansion yourself.
2688 man3direxp (man3dir.U):
2689 This variable is the same as the man3dir variable, but is filename
2690 expanded at configuration time, for convenient use in makefiles.
2692 man3ext (man3dir.U):
2693 This variable contains the extension that the manual page should
2694 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2698 This variable is used internally by Configure to determine the
2699 full pathname (if any) of the Mcc program. After Configure runs,
2700 the value is reset to a plain "Mcc" and is not useful.
2702 mips_type (usrinc.U):
2703 This variable holds the environment type for the mips system.
2704 Possible values are "BSD 4.3" and "System V".
2707 This variable is used internally by Configure to determine the
2708 full pathname (if any) of the mkdir program. After Configure runs,
2709 the value is reset to a plain "mkdir" and is not useful.
2711 mmaptype (d_mmap.U):
2712 This symbol contains the type of pointer returned by mmap()
2713 (and simultaneously the type of the first argument).
2714 It can be 'void *' or 'caddr_t'.
2716 modetype (modetype.U):
2717 This variable defines modetype to be something like mode_t,
2718 int, unsigned short, or whatever type is used to declare file
2719 modes for system calls.
2722 This variable is used internally by Configure to determine the
2723 full pathname (if any) of the more program. After Configure runs,
2724 the value is reset to a plain "more" and is not useful.
2726 multiarch (multiarch.U):
2727 This variable conditionally defines the MULTIARCH symbol
2728 which signifies the presence of multiplatform files.
2729 This is normally set by hints files.
2732 This variable is defined but not used by Configure.
2733 The value is a plain '' and is not useful.
2735 myarchname (archname.U):
2736 This variable holds the architecture name computed by Configure in
2737 a previous run. It is not intended to be perused by any user and
2738 should never be set in a hint file.
2740 mydomain (myhostname.U):
2741 This variable contains the eventual value of the MYDOMAIN symbol,
2742 which is the domain of the host the program is going to run on.
2743 The domain must be appended to myhostname to form a complete host name.
2744 The dot comes with mydomain, and need not be supplied by the program.
2746 myhostname (myhostname.U):
2747 This variable contains the eventual value of the MYHOSTNAME symbol,
2748 which is the name of the host the program is going to run on.
2749 The domain is not kept with hostname, but must be gotten from mydomain.
2750 The dot comes with mydomain, and need not be supplied by the program.
2752 myuname (Oldconfig.U):
2753 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2754 pseudo variables assignments in the output are stripped, thank you. The
2755 whole thing is then lower-cased.
2758 This variable contains the '-n' flag if that is what causes the echo
2759 command to suppress newline. Otherwise it is null. Correct usage is
2760 $echo $n "prompt for a question: $c".
2762 need_va_copy (need_va_copy.U):
2763 This symbol, if defined, indicates that the system stores
2764 the variable argument list datatype, va_list, in a format
2765 that cannot be copied by simple assignment, so that some
2766 other means must be used when copying is required.
2767 As such systems vary in their provision (or non-provision)
2768 of copying mechanisms, handy.h defines a platform-
2769 independent macro, Perl_va_copy(src, dst), to do the job.
2771 netdb_hlen_type (netdbtype.U):
2772 This variable holds the type used for the 2nd argument to
2773 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2774 This is only useful if you have gethostbyaddr(), naturally.
2776 netdb_host_type (netdbtype.U):
2777 This variable holds the type used for the 1st argument to
2778 gethostbyaddr(). Usually, this is char * or void *, possibly
2779 with or without a const prefix.
2780 This is only useful if you have gethostbyaddr(), naturally.
2782 netdb_name_type (netdbtype.U):
2783 This variable holds the type used for the argument to
2784 gethostbyname(). Usually, this is char * or const char *.
2785 This is only useful if you have gethostbyname(), naturally.
2787 netdb_net_type (netdbtype.U):
2788 This variable holds the type used for the 1st argument to
2789 getnetbyaddr(). Usually, this is int or long.
2790 This is only useful if you have getnetbyaddr(), naturally.
2793 This variable is used internally by Configure to determine the
2794 full pathname (if any) of the nm program. After Configure runs,
2795 the value is reset to a plain "nm" and is not useful.
2798 This variable holds the options that may be necessary for nm.
2800 nm_so_opt (usenm.U):
2801 This variable holds the options that may be necessary for nm
2802 to work on a shared library but that can not be used on an
2803 archive library. Currently, this is only used by Linux, where
2804 nm --dynamic is *required* to get symbols from an ELF library which
2805 has been stripped, but nm --dynamic is *fatal* on an archive library.
2806 Maybe Linux should just always set usenm=false.
2808 nonxs_ext (Extensions.U):
2809 This variable holds a list of all non-xs extensions included
2810 in the package. All of them will be built.
2813 This variable is used internally by Configure to determine the
2814 full pathname (if any) of the nroff program. After Configure runs,
2815 the value is reset to a plain "nroff" and is not useful.
2817 nveformat (perlxvf.U):
2818 This variable contains the format string used for printing
2819 a Perl NV using %e-ish floating point format.
2821 nvEUformat (perlxvf.U):
2822 This variable contains the format string used for printing
2823 a Perl NV using %E-ish floating point format.
2825 nvfformat (perlxvf.U):
2826 This variable confains the format string used for printing
2827 a Perl NV using %f-ish floating point format.
2829 nvFUformat (perlxvf.U):
2830 This variable confains the format string used for printing
2831 a Perl NV using %F-ish floating point format.
2833 nvgformat (perlxvf.U):
2834 This variable contains the format string used for printing
2835 a Perl NV using %g-ish floating point format.
2837 nvGUformat (perlxvf.U):
2838 This variable contains the format string used for printing
2839 a Perl NV using %G-ish floating point format.
2842 This variable is the size of an NV in bytes.
2845 This variable contains the C type used for Perl's NV.
2847 o_nonblock (nblock_io.U):
2848 This variable bears the symbol value to be used during open() or fcntl()
2849 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2850 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2851 but that is only supported by some devices.
2854 This is an old synonym for _o.
2856 old_pthread_create_joinable (d_pthrattrj.U):
2857 This variable defines the constant to use for creating joinable
2858 (aka undetached) pthreads. Unused if pthread.h defines
2859 PTHREAD_CREATE_JOINABLE. If used, possible values are
2860 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2862 optimize (ccflags.U):
2863 This variable contains any optimizer/debugger flag that should be used.
2864 It is up to the Makefile to use it.
2866 orderlib (orderlib.U):
2867 This variable is "true" if the components of libraries must be ordered
2868 (with `lorder $* | tsort`) before placing them in an archive. Set to
2869 "false" if ranlib or ar can generate random libraries.
2871 osname (Oldconfig.U):
2872 This variable contains the operating system name (e.g. sunos,
2873 solaris, hpux, etc.). It can be useful later on for setting
2874 defaults. Any spaces are replaced with underscores. It is set
2875 to a null string if we can't figure it out.
2877 osvers (Oldconfig.U):
2878 This variable contains the operating system version (e.g.
2879 4.1.3, 5.2, etc.). It is primarily used for helping select
2880 an appropriate hints file, but might be useful elsewhere for
2881 setting defaults. It is set to '' if we can't figure it out.
2882 We try to be flexible about how much of the version number
2883 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2884 same for this package, hints files might just be os_4.0 or
2885 os_4.1, etc., not keeping separate files for each little release.
2887 otherlibdirs (otherlibdirs.U):
2888 This variable contains a colon-separated set of paths for the perl
2889 binary to search for additional library files or modules.
2890 These directories will be tacked to the end of @INC.
2891 Perl will automatically search below each path for version-
2892 and architecture-specific directories. See inc_version_list
2894 A value of ' ' means 'none' and is used to preserve this value
2895 for the next run through Configure.
2897 package (package.U):
2898 This variable contains the name of the package being constructed.
2899 It is primarily intended for the use of later Configure units.
2902 This variable contains the name of the preferred pager on the system.
2903 Usual values are (the full pathnames of) more, less, pg, or cat.
2906 This variable contains a command that produces the text of the
2907 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2908 "ypcat passwd" when NIS is used.
2909 On some systems, such as os390, there may be no equivalent
2910 command, in which case this variable is unset.
2912 patchlevel (patchlevel.U):
2913 The patchlevel level of this package.
2914 The value of patchlevel comes from the patchlevel.h file.
2915 In a version number such as 5.6.1, this is the "6".
2916 In patchlevel.h, this is referred to as "PERL_VERSION".
2919 This is an old synonym for p_ in Head.U, the character
2920 used to separate elements in the command shell search PATH.
2923 This variable contains the full path (if any) to a previously
2924 installed perl5.005 or later suitable for running the script
2925 to determine inc_version_list.
2928 This variable is defined but not used by Configure.
2929 The value is a plain '' and is not useful.
2931 PERL_REVISION (Oldsyms.U):
2932 In a Perl version number such as 5.6.2, this is the 5.
2933 This value is manually set in patchlevel.h
2935 PERL_SUBVERSION (Oldsyms.U):
2936 In a Perl version number such as 5.6.2, this is the 2.
2937 Values greater than 50 represent potentially unstable
2938 development subversions.
2939 This value is manually set in patchlevel.h
2941 PERL_VERSION (Oldsyms.U):
2942 In a Perl version number such as 5.6.2, this is the 6.
2943 This value is manually set in patchlevel.h
2945 perladmin (perladmin.U):
2946 Electronic mail address of the perl5 administrator.
2949 The list of libraries needed by Perl only (any libraries needed
2950 by extensions only will by dropped, if using dynamic loading).
2952 perlpath (perlpath.U):
2953 This variable contains the eventual value of the PERLPATH symbol,
2954 which contains the name of the perl interpreter to be used in
2955 shell scripts and in the "eval 'exec'" idiom.
2958 This variable is used internally by Configure to determine the
2959 full pathname (if any) of the pg program. After Configure runs,
2960 the value is reset to a plain "pg" and is not useful.
2962 phostname (myhostname.U):
2963 This variable contains the eventual value of the PHOSTNAME symbol,
2964 which is a command that can be fed to popen() to get the host name.
2965 The program should probably not presume that the domain is or isn't
2968 pidtype (pidtype.U):
2969 This variable defines PIDTYPE to be something like pid_t, int,
2970 ushort, or whatever type is used to declare process ids in the kernel.
2973 Holds the private path used by Configure to find out the libraries.
2974 Its value is prepend to libpth. This variable takes care of special
2975 machines, like the mips. Usually, it should be empty.
2977 pm_apiversion (xs_apiversion.U):
2978 This variable contains the version of the oldest perl
2979 compatible with the present perl. (That is, pure perl modules
2980 written for $pm_apiversion will still work for the current
2981 version). perl.c:incpush() and lib/lib.pm will automatically
2982 search in $sitelib for older directories across major versions
2983 back to pm_apiversion. This is only useful if you have a perl
2984 library directory tree structured like the default one. The
2985 versioned site_perl library was introduced in 5.005, so that's
2986 the default setting for this variable. It's hard to imagine
2987 it changing before Perl6. It is included here for symmetry
2988 with xs_apiveprsion -- the searching algorithms will
2989 (presumably) be similar.
2990 See the INSTALL file for how this works.
2993 This variable is defined but not used by Configure.
2994 The value is a plain '' and is not useful.
2997 This variable is defined but not used by Configure.
2998 The value is a plain '' and is not useful.
3001 This variable holds the name of the directory below which the
3002 user will install the package. Usually, this is /usr/local, and
3003 executables go in /usr/local/bin, library stuff in /usr/local/lib,
3004 man pages in /usr/local/man, etc. It is only used to set defaults
3005 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
3007 prefixexp (prefix.U):
3008 This variable holds the full absolute path of the directory below
3009 which the user will install the package. Derived from prefix.
3011 privlib (privlib.U):
3012 This variable contains the eventual value of the PRIVLIB symbol,
3013 which is the name of the private library for this package. It may
3014 have a ~ on the front. It is up to the makefile to eventually create
3015 this directory while performing installation (with ~ substitution).
3017 privlibexp (privlib.U):
3018 This variable is the ~name expanded version of privlib, so that you
3019 may use it directly in Makefiles or shell scripts.
3021 prototype (prototype.U):
3022 This variable holds the eventual value of CAN_PROTOTYPE, which
3023 indicates the C compiler can handle funciton prototypes.
3025 ptrsize (ptrsize.U):
3026 This variable contains the value of the PTRSIZE symbol, which
3027 indicates to the C program how many bytes there are in a pointer.
3029 quadkind (quadtype.U):
3030 This variable, if defined, encodes the type of a quad:
3031 1 = int, 2 = long, 3 = long long, 4 = int64_t.
3033 quadtype (quadtype.U):
3034 This variable defines Quad_t to be something like long, int,
3035 long long, int64_t, or whatever type is used for 64-bit integers.
3037 randbits (randfunc.U):
3038 Indicates how many bits are produced by the function used to
3039 generate normalized random numbers.
3041 randfunc (randfunc.U):
3042 Indicates the name of the random number function to use.
3043 Values include drand48, random, and rand. In C programs,
3044 the 'Drand01' macro is defined to generate uniformly distributed
3045 random numbers over the range [0., 1.[ (see drand01 and nrand).
3047 randseedtype (randfunc.U):
3048 Indicates the type of the argument of the seedfunc.
3050 ranlib (orderlib.U):
3051 This variable is set to the pathname of the ranlib program, if it is
3052 needed to generate random libraries. Set to ":" if ar can generate
3053 random libraries or if random libraries are not supported
3055 rd_nodata (nblock_io.U):
3056 This variable holds the return code from read() when no data is
3057 present. It should be -1, but some systems return 0 when O_NDELAY is
3058 used, which is a shame because you cannot make the difference between
3059 no data and an EOF.. Sigh!
3061 revision (patchlevel.U):
3062 The value of revision comes from the patchlevel.h file.
3063 In a version number such as 5.6.1, this is the "5".
3064 In patchlevel.h, this is referred to as "PERL_REVISION".
3067 This variable is used internally by Configure to determine the
3068 full pathname (if any) of the rm program. After Configure runs,
3069 the value is reset to a plain "rm" and is not useful.
3072 This variable is defined but not used by Configure.
3073 The value is a plain '' and is not useful.
3076 This variable contains 'true' or 'false' depending whether the
3077 nm extraction should be performed or not, according to the value
3078 of usenm and the flags on the Configure command line.
3080 sched_yield (d_pthread_y.U):
3081 This variable defines the way to yield the execution
3082 of the current thread.
3084 scriptdir (scriptdir.U):
3085 This variable holds the name of the directory in which the user wants
3086 to put publicly scripts for the package in question. It is either
3087 the same directory as for binaries, or a special one that can be
3088 mounted across different architectures, like /usr/share. Programs
3089 must be prepared to deal with ~name expansion.
3091 scriptdirexp (scriptdir.U):
3092 This variable is the same as scriptdir, but is filename expanded
3093 at configuration time, for programs not wanting to bother with it.
3096 This variable is used internally by Configure to determine the
3097 full pathname (if any) of the sed program. After Configure runs,
3098 the value is reset to a plain "sed" and is not useful.
3100 seedfunc (randfunc.U):
3101 Indicates the random number generating seed function.
3102 Values include srand48, srandom, and srand.
3104 selectminbits (selectminbits.U):
3105 This variable holds the minimum number of bits operated by select.
3106 That is, if you do select(n, ...), how many bits at least will be
3107 cleared in the masks if some activity is detected. Usually this
3108 is either n or 32*ceil(n/32), especially many little-endians do
3109 the latter. This is only useful if you have select(), naturally.
3111 selecttype (selecttype.U):
3112 This variable holds the type used for the 2nd, 3rd, and 4th
3113 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3114 is defined, and 'int *' otherwise. This is only useful if you
3115 have select(), naturally.
3118 This variable is defined but not used by Configure.
3119 The value is a plain '' and is not useful.
3122 This variable contains the full pathname of the shell used
3123 on this system to execute Bourne shell scripts. Usually, this will be
3124 /bin/sh, though it's possible that some systems will have /bin/ksh,
3125 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3127 This unit comes before Options.U, so you can't set sh with a '-D'
3128 option, though you can override this (and startsh)
3129 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3132 This variable is defined but not used by Configure.
3133 The value is a plain '' and is not useful.
3135 sharpbang (spitshell.U):
3136 This variable contains the string #! if this system supports that
3139 shmattype (d_shmat.U):
3140 This symbol contains the type of pointer returned by shmat().
3141 It can be 'void *' or 'char *'.
3143 shortsize (intsize.U):
3144 This variable contains the value of the SHORTSIZE symbol which
3145 indicates to the C program how many bytes there are in a short.
3147 shrpenv (libperl.U):
3148 If the user builds a shared libperl.so, then we need to tell the
3149 'perl' executable where it will be able to find the installed libperl.so.
3150 One way to do this on some systems is to set the environment variable
3151 LD_RUN_PATH to the directory that will be the final location of the
3152 shared libperl.so. The makefile can use this with something like
3153 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3155 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3158 See the main perl Makefile.SH for actual working usage.
3159 Alternatively, we might be able to use a command line option such
3160 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3161 $archlibexp/CORE (Linux).
3163 shsharp (spitshell.U):
3164 This variable tells further Configure units whether your sh can
3167 sig_count (sig_name.U):
3168 This variable holds a number larger than the largest valid
3169 signal number. This is usually the same as the NSIG macro.
3171 sig_name (sig_name.U):
3172 This variable holds the signal names, space separated. The leading
3173 SIG in signal name is removed. A ZERO is prepended to the
3174 list. This is currently not used.
3176 sig_name_init (sig_name.U):
3177 This variable holds the signal names, enclosed in double quotes and
3178 separated by commas, suitable for use in the SIG_NAME definition
3179 below. A "ZERO" is prepended to the list, and the list is
3180 terminated with a plain 0. The leading SIG in signal names
3181 is removed. See sig_num.
3183 sig_num (sig_name.U):
3184 This variable holds the signal numbers, space separated. A ZERO is
3185 prepended to the list (corresponding to the fake SIGZERO), and
3186 the list is terminated with a 0. Those numbers correspond to
3187 the value of the signal listed in the same place within the
3190 sig_num_init (sig_name.U):
3191 This variable holds the signal numbers, enclosed in double quotes and
3192 separated by commas, suitable for use in the SIG_NUM definition
3193 below. A "ZERO" is prepended to the list, and the list is
3194 terminated with a plain 0.
3196 sig_size (sig_name.U):
3197 This variable contains the number of elements of the sig_name
3198 and sig_num arrays, excluding the final NULL entry.
3200 signal_t (d_voidsig.U):
3201 This variable holds the type of the signal handler (void or int).
3203 sitearch (sitearch.U):
3204 This variable contains the eventual value of the SITEARCH symbol,
3205 which is the name of the private library for this package. It may
3206 have a ~ on the front. It is up to the makefile to eventually create
3207 this directory while performing installation (with ~ substitution).
3208 The standard distribution will put nothing in this directory.
3209 After perl has been installed, users may install their own local
3210 architecture-dependent modules in this directory with
3211 MakeMaker Makefile.PL
3212 or equivalent. See INSTALL for details.
3214 sitearchexp (sitearch.U):
3215 This variable is the ~name expanded version of sitearch, so that you
3216 may use it directly in Makefiles or shell scripts.
3218 sitebin (sitebin.U):
3219 This variable holds the name of the directory in which the user wants
3220 to put add-on publicly executable files for the package in question. It
3221 is most often a local directory such as /usr/local/bin. Programs using
3222 this variable must be prepared to deal with ~name substitution.
3223 The standard distribution will put nothing in this directory.
3224 After perl has been installed, users may install their own local
3225 executables in this directory with
3226 MakeMaker Makefile.PL
3227 or equivalent. See INSTALL for details.
3229 sitebinexp (sitebin.U):
3230 This is the same as the sitebin variable, but is filename expanded at
3231 configuration time, for use in your makefiles.
3233 sitelib (sitelib.U):
3234 This variable contains the eventual value of the SITELIB symbol,
3235 which is the name of the private library for this package. It may
3236 have a ~ on the front. It is up to the makefile to eventually create
3237 this directory while performing installation (with ~ substitution).
3238 The standard distribution will put nothing in this directory.
3239 After perl has been installed, users may install their own local
3240 architecture-independent modules in this directory with
3241 MakeMaker Makefile.PL
3242 or equivalent. See INSTALL for details.
3244 sitelib_stem (sitelib.U):
3245 This variable is $sitelibexp with any trailing version-specific component
3246 removed. The elements in inc_version_list (inc_version_list.U) can
3247 be tacked onto this variable to generate a list of directories to search.
3249 sitelibexp (sitelib.U):
3250 This variable is the ~name expanded version of sitelib, so that you
3251 may use it directly in Makefiles or shell scripts.
3253 siteprefix (siteprefix.U):
3254 This variable holds the full absolute path of the directory below
3255 which the user will install add-on packages.
3256 See INSTALL for usage and examples.
3258 siteprefixexp (siteprefix.U):
3259 This variable holds the full absolute path of the directory below
3260 which the user will install add-on packages. Derived from siteprefix.
3262 sizesize (sizesize.U):
3263 This variable contains the size of a sizetype in bytes.
3265 sizetype (sizetype.U):
3266 This variable defines sizetype to be something like size_t,
3267 unsigned long, or whatever type is used to declare length
3268 parameters for string functions.
3271 This variable is defined but not used by Configure.
3272 The value is a plain '' and is not useful.
3275 This variable is defined but not used by Configure.
3276 The value is a plain '' and is not useful.
3279 This variable holds the extension used to identify shared libraries
3280 (also known as shared objects) on the system. Usually set to 'so'.
3282 sockethdr (d_socket.U):
3283 This variable has any cpp '-I' flags needed for socket support.
3285 socketlib (d_socket.U):
3286 This variable has the names of any libraries needed for socket support.
3288 socksizetype (socksizetype.U):
3289 This variable holds the type used for the size argument
3290 for various socket calls like accept. Usual values include
3291 socklen_t, size_t, and int.
3294 This variable is used internally by Configure to determine the
3295 full pathname (if any) of the sort program. After Configure runs,
3296 the value is reset to a plain "sort" and is not useful.
3298 spackage (package.U):
3299 This variable contains the name of the package being constructed,
3300 with the first letter uppercased, i.e. suitable for starting
3303 spitshell (spitshell.U):
3304 This variable contains the command necessary to spit out a runnable
3305 shell on this system. It is either cat or a grep '-v' for # comments.
3307 sPRId64 (quadfio.U):
3308 This variable, if defined, contains the string used by stdio to
3309 format 64-bit decimal numbers (format 'd') for output.
3311 sPRIeldbl (longdblfio.U):
3312 This variable, if defined, contains the string used by stdio to
3313 format long doubles (format 'e') for output.
3315 sPRIEUldbl (longdblfio.U):
3316 This variable, if defined, contains the string used by stdio to
3317 format long doubles (format 'E') for output.
3318 The 'U' in the name is to separate this from sPRIeldbl so that even
3319 case-blind systems can see the difference.
3321 sPRIfldbl (longdblfio.U):
3322 This variable, if defined, contains the string used by stdio to
3323 format long doubles (format 'f') for output.
3325 sPRIFUldbl (longdblfio.U):
3326 This variable, if defined, contains the string used by stdio to
3327 format long doubles (format 'F') for output.
3328 The 'U' in the name is to separate this from sPRIfldbl so that even
3329 case-blind systems can see the difference.
3331 sPRIgldbl (longdblfio.U):
3332 This variable, if defined, contains the string used by stdio to
3333 format long doubles (format 'g') for output.
3335 sPRIGUldbl (longdblfio.U):
3336 This variable, if defined, contains the string used by stdio to
3337 format long doubles (format 'G') for output.
3338 The 'U' in the name is to separate this from sPRIgldbl so that even
3339 case-blind systems can see the difference.
3341 sPRIi64 (quadfio.U):
3342 This variable, if defined, contains the string used by stdio to
3343 format 64-bit decimal numbers (format 'i') for output.
3345 sPRIo64 (quadfio.U):
3346 This variable, if defined, contains the string used by stdio to
3347 format 64-bit octal numbers (format 'o') for output.
3349 sPRIu64 (quadfio.U):
3350 This variable, if defined, contains the string used by stdio to
3351 format 64-bit unsigned decimal numbers (format 'u') for output.
3353 sPRIx64 (quadfio.U):
3354 This variable, if defined, contains the string used by stdio to
3355 format 64-bit hexadecimal numbers (format 'x') for output.
3357 sPRIXU64 (quadfio.U):
3358 This variable, if defined, contains the string used by stdio to
3359 format 64-bit hExADECimAl numbers (format 'X') for output.
3360 The 'U' in the name is to separate this from sPRIx64 so that even
3361 case-blind systems can see the difference.
3364 This variable holds the path to the package source. It is up to
3365 the Makefile to use this variable and set VPATH accordingly to
3366 find the sources remotely.
3368 sSCNfldbl (longdblfio.U):
3369 This variable, if defined, contains the string used by stdio to
3370 format long doubles (format 'f') for input.
3372 ssizetype (ssizetype.U):
3373 This variable defines ssizetype to be something like ssize_t,
3374 long or int. It is used by functions that return a count
3375 of bytes or an error condition. It must be a signed type.
3376 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3378 startperl (startperl.U):
3379 This variable contains the string to put on the front of a perl
3380 script to make sure (hopefully) that it runs with perl and not some
3381 shell. Of course, that leading line must be followed by the classical
3383 eval 'exec perl -S $0 ${1+"$@"}'
3384 if $running_under_some_shell;
3385 to guarantee perl startup should the shell execute the script. Note
3386 that this magic incatation is not understood by csh.
3388 startsh (startsh.U):
3389 This variable contains the string to put on the front of a shell
3390 script to make sure (hopefully) that it runs with sh and not some
3393 static_ext (Extensions.U):
3394 This variable holds a list of XS extension files we want to
3395 link statically into the package. It is used by Makefile.
3397 stdchar (stdchar.U):
3398 This variable conditionally defines STDCHAR to be the type of char
3399 used in stdio.h. It has the values "unsigned char" or "char".
3401 stdio_base (d_stdstdio.U):
3402 This variable defines how, given a FILE pointer, fp, to access the
3403 _base field (or equivalent) of stdio.h's FILE structure. This will
3404 be used to define the macro FILE_base(fp).
3406 stdio_bufsiz (d_stdstdio.U):
3407 This variable defines how, given a FILE pointer, fp, to determine
3408 the number of bytes store in the I/O buffer pointer to by the
3409 _base field (or equivalent) of stdio.h's FILE structure. This will
3410 be used to define the macro FILE_bufsiz(fp).
3412 stdio_cnt (d_stdstdio.U):
3413 This variable defines how, given a FILE pointer, fp, to access the
3414 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3415 be used to define the macro FILE_cnt(fp).
3417 stdio_filbuf (d_stdstdio.U):
3418 This variable defines how, given a FILE pointer, fp, to tell
3419 stdio to refill it's internal buffers (?). This will
3420 be used to define the macro FILE_filbuf(fp).
3422 stdio_ptr (d_stdstdio.U):
3423 This variable defines how, given a FILE pointer, fp, to access the
3424 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3425 be used to define the macro FILE_ptr(fp).
3427 stdio_stream_array (stdio_streams.U):
3428 This variable tells the name of the array holding the stdio streams.
3429 Usual values include _iob, __iob, and __sF.
3431 strings (i_string.U):
3432 This variable holds the full path of the string header that will be
3433 used. Typically /usr/include/string.h or /usr/include/strings.h.
3436 This variable is defined but not used by Configure.
3437 The value is a plain '' and is not useful.
3439 subversion (patchlevel.U):
3440 The subversion level of this package.
3441 The value of subversion comes from the patchlevel.h file.
3442 In a version number such as 5.6.1, this is the "1".
3443 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
3444 This is unique to perl.
3447 This variable holds the place where the manual is located on this
3448 system. It is not the place where the user wants to put his manual
3449 pages. Rather it is the place where Configure may look to find manual
3450 for unix commands (section 1 of the manual usually). See mansrc.
3453 This variable is defined but not used by Configure.
3454 The value is a plain '' and is not useful.
3457 This variable is defined but not used by Configure.
3458 The value is a plain '' and is not useful.
3461 This variable is defined but not used by Configure.
3462 The value is a plain '' and is not useful.
3465 This variable is defined but not used by Configure.
3466 The value is a plain '' and is not useful.
3469 This variable is used internally by Configure to determine the
3470 full pathname (if any) of the test program. After Configure runs,
3471 the value is reset to a plain "test" and is not useful.
3473 timeincl (i_time.U):
3474 This variable holds the full path of the included time header(s).
3476 timetype (d_time.U):
3477 This variable holds the type returned by time(). It can be long,
3478 or time_t on BSD sites (in which case <sys/types.h> should be
3479 included). Anyway, the type Time_t should be used.
3482 This variable is used internally by Configure to determine the
3483 full pathname (if any) of the touch program. After Configure runs,
3484 the value is reset to a plain "touch" and is not useful.
3487 This variable is used internally by Configure to determine the
3488 full pathname (if any) of the tr program. After Configure runs,
3489 the value is reset to a plain "tr" and is not useful.
3492 This variable contains the value to be passed to the tr(1)
3493 command to transliterate a newline. Typical values are
3494 '\012' and '\n'. This is needed for EBCDIC systems where
3495 newline is not necessarily '\012'.
3498 This variable is defined but not used by Configure.
3499 The value is a plain '' and is not useful.
3502 This variable is the size of an U16 in bytes.
3505 This variable contains the C type used for Perl's U16.
3508 This variable is the size of an U32 in bytes.
3511 This variable contains the C type used for Perl's U32.
3514 This variable is the size of an U64 in bytes.
3517 This variable contains the C type used for Perl's U64.
3520 This variable is the size of an U8 in bytes.
3523 This variable contains the C type used for Perl's U8.
3526 This variable contains the format string used for printing a Uid_t.
3528 uidsign (uidsign.U):
3529 This variable contains the signedness of a uidtype.
3530 1 for unsigned, -1 for signed.
3532 uidsize (uidsize.U):
3533 This variable contains the size of a uidtype in bytes.
3535 uidtype (uidtype.U):
3536 This variable defines Uid_t to be something like uid_t, int,
3537 ushort, or whatever type is used to declare user ids in the kernel.
3540 This variable is used internally by Configure to determine the
3541 full pathname (if any) of the uname program. After Configure runs,
3542 the value is reset to a plain "uname" and is not useful.
3545 This variable is used internally by Configure to determine the
3546 full pathname (if any) of the uniq program. After Configure runs,
3547 the value is reset to a plain "uniq" and is not useful.
3549 uquadtype (quadtype.U):
3550 This variable defines Uquad_t to be something like unsigned long,
3551 unsigned int, unsigned long long, uint64_t, or whatever type is
3552 used for 64-bit integers.
3554 use5005threads (usethreads.U):
3555 This variable conditionally defines the USE_5005THREADS symbol,
3556 and indicates that Perl should be built to use the 5.005-based
3557 threading implementation.
3559 use64bitall (use64bits.U):
3560 This variable conditionally defines the USE_64_BIT_ALL symbol,
3561 and indicates that 64-bit integer types should be used
3562 when available. The maximal possible
3563 64-bitness is employed: LP64 or ILP64, meaning that you will
3564 be able to use more than 2 gigabytes of memory. This mode is
3565 even more binary incompatible than USE_64_BIT_INT. You may not
3566 be able to run the resulting executable in a 32-bit CPU at all or
3567 you may need at least to reboot your OS to 64-bit mode.
3569 use64bitint (use64bits.U):
3570 This variable conditionally defines the USE_64_BIT_INT symbol,
3571 and indicates that 64-bit integer types should be used
3572 when available. The minimal possible 64-bitness
3573 is employed, just enough to get 64-bit integers into Perl.
3574 This may mean using for example "long longs", while your memory
3575 may still be limited to 2 gigabytes.
3578 This variable indicates if the system supports dynamic
3579 loading of some sort. See also dlsrc and dlobj.
3581 useithreads (usethreads.U):
3582 This variable conditionally defines the USE_ITHREADS symbol,
3583 and indicates that Perl should be built to use the interpreter-based
3584 threading implementation.
3586 uselargefiles (uselfs.U):
3587 This variable conditionally defines the USE_LARGE_FILES symbol,
3588 and indicates that large file interfaces should be used when
3591 uselongdouble (uselongdbl.U):
3592 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3593 and indicates that long doubles should be used when available.
3595 usemorebits (usemorebits.U):
3596 This variable conditionally defines the USE_MORE_BITS symbol,
3597 and indicates that explicit 64-bit interfaces and long doubles
3598 should be used when available.
3600 usemultiplicity (usemultiplicity.U):
3601 This variable conditionally defines the MULTIPLICITY symbol,
3602 and indicates that Perl should be built to use multiplicity.
3604 usemymalloc (mallocsrc.U):
3605 This variable contains y if the malloc that comes with this package
3606 is desired over the system's version of malloc. People often include
3607 special versions of malloc for effiency, but such versions are often
3608 less portable. See also mallocsrc and mallocobj.
3609 If this is 'y', then -lmalloc is removed from $libs.
3612 This variable contains 'true' or 'false' depending whether the
3613 nm extraction is wanted or not.
3615 useopcode (Extensions.U):
3616 This variable holds either 'true' or 'false' to indicate
3617 whether the Opcode extension should be used. The sole
3618 use for this currently is to allow an easy mechanism
3619 for users to skip the Opcode extension from the Configure
3622 useperlio (useperlio.U):
3623 This variable conditionally defines the USE_PERLIO symbol,
3624 and indicates that the PerlIO abstraction should be
3627 useposix (Extensions.U):
3628 This variable holds either 'true' or 'false' to indicate
3629 whether the POSIX extension should be used. The sole
3630 use for this currently is to allow an easy mechanism
3631 for hints files to indicate that POSIX will not compile
3632 on a particular system.
3635 This variable is set to true when the user agrees to use sfio.
3636 It is set to false when sfio is not available or when the user
3637 explicitely requests not to use sfio. It is here primarily so
3638 that command-line settings can override the auto-detection of
3639 d_sfio without running into a "WHOA THERE".
3641 useshrplib (libperl.U):
3642 This variable is set to 'yes' if the user wishes
3643 to build a shared libperl, and 'no' otherwise.
3645 usesocks (usesocks.U):
3646 This variable conditionally defines the USE_SOCKS symbol,
3647 and indicates that Perl should be built to use SOCKS.
3649 usethreads (usethreads.U):
3650 This variable conditionally defines the USE_THREADS symbol,
3651 and indicates that Perl should be built to use threads.
3653 usevendorprefix (vendorprefix.U):
3654 This variable tells whether the vendorprefix
3655 and consequently other vendor* paths are in use.
3657 usevfork (d_vfork.U):
3658 This variable is set to true when the user accepts to use vfork.
3659 It is set to false when no vfork is available or when the user
3660 explicitely requests not to use vfork.
3663 This variable holds the path of the include files, which is
3664 usually /usr/include. It is mainly used by other Configure units.
3667 This variable is defined but not used by Configure.
3668 The value is a plain '' and is not useful.
3670 uvoformat (perlxvf.U):
3671 This variable contains the format string used for printing
3672 a Perl UV as an unsigned octal integer.
3675 This variable is the size of a UV in bytes.
3678 This variable contains the C type used for Perl's UV.
3680 uvuformat (perlxvf.U):
3681 This variable contains the format string used for printing
3682 a Perl UV as an unsigned decimal integer.
3684 uvxformat (perlxvf.U):
3685 This variable contains the format string used for printing
3686 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3688 uvXUformat (perlxvf.U):
3689 This variable contains the format string used for printing
3690 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
3692 vendorarch (vendorarch.U):
3693 This variable contains the value of the PERL_VENDORARCH symbol.
3694 It may have a ~ on the front.
3695 The standard distribution will put nothing in this directory.
3696 Vendors who distribute perl may wish to place their own
3697 architecture-dependent modules and extensions in this directory with
3698 MakeMaker Makefile.PL INSTALLDIRS=vendor
3699 or equivalent. See INSTALL for details.
3701 vendorarchexp (vendorarch.U):
3702 This variable is the ~name expanded version of vendorarch, so that you
3703 may use it directly in Makefiles or shell scripts.
3705 vendorbin (vendorbin.U):
3706 This variable contains the eventual value of the VENDORBIN symbol.
3707 It may have a ~ on the front.
3708 The standard distribution will put nothing in this directory.
3709 Vendors who distribute perl may wish to place additional
3710 binaries in this directory with
3711 MakeMaker Makefile.PL INSTALLDIRS=vendor
3712 or equivalent. See INSTALL for details.
3714 vendorbinexp (vendorbin.U):
3715 This variable is the ~name expanded version of vendorbin, so that you
3716 may use it directly in Makefiles or shell scripts.
3718 vendorlib (vendorlib.U):
3719 This variable contains the eventual value of the VENDORLIB symbol,
3720 which is the name of the private library for this package.
3721 The standard distribution will put nothing in this directory.
3722 Vendors who distribute perl may wish to place their own
3723 modules in this directory with
3724 MakeMaker Makefile.PL INSTALLDIRS=vendor
3725 or equivalent. See INSTALL for details.
3727 vendorlib_stem (vendorlib.U):
3728 This variable is $vendorlibexp with any trailing version-specific component
3729 removed. The elements in inc_version_list (inc_version_list.U) can
3730 be tacked onto this variable to generate a list of directories to search.
3732 vendorlibexp (vendorlib.U):
3733 This variable is the ~name expanded version of vendorlib, so that you
3734 may use it directly in Makefiles or shell scripts.
3736 vendorprefix (vendorprefix.U):
3737 This variable holds the full absolute path of the directory below
3738 which the vendor will install add-on packages.
3739 See INSTALL for usage and examples.
3741 vendorprefixexp (vendorprefix.U):
3742 This variable holds the full absolute path of the directory below
3743 which the vendor will install add-on packages. Derived from vendorprefix.
3745 version (patchlevel.U):
3746 The full version number of this package, such as 5.6.1 (or 5_6_1).
3747 This combines revision, patchlevel, and subversion to get the
3748 full version number, including any possible subversions.
3749 This is suitable for use as a directory name, and hence is
3750 filesystem dependent.
3752 versiononly (versiononly.U):
3753 If set, this symbol indicates that only the version-specific
3754 components of a perl installation should be installed.
3755 This may be useful for making a test installation of a new
3756 version without disturbing the existing installation.
3757 Setting versiononly is equivalent to setting installperl's -v option.
3758 In particular, the non-versioned scripts and programs such as
3759 a2p, c2ph, h2xs, pod2*, and perldoc are not installed
3760 (see INSTALL for a more complete list). Nor are the man
3762 Usually, this is undef.
3765 This variable is defined but not used by Configure.
3766 The value is a plain '' and is not useful.
3768 voidflags (voidflags.U):
3769 This variable contains the eventual value of the VOIDFLAGS symbol,
3770 which indicates how much support of the void type is given by this
3771 compiler. See VOIDFLAGS for more info.
3774 This variable holds extra path (space-separated) used to find
3775 libraries on this platform, for example CPU-specific libraries
3776 (on multi-CPU platforms) may be listed here.
3778 xs_apiversion (xs_apiversion.U):
3779 This variable contains the version of the oldest perl binary
3780 compatible with the present perl. perl.c:incpush() and
3781 lib/lib.pm will automatically search in $sitearch for older
3782 directories across major versions back to xs_apiversion.
3783 This is only useful if you have a perl library directory tree
3784 structured like the default one.
3785 See INSTALL for how this works.
3786 The versioned site_perl directory was introduced in 5.005,
3787 so that is the lowest possible value.
3788 Since this can depend on compile time options (such as
3789 bincompat) it is set by Configure. Other non-default sources
3790 of potential incompatibility, such as multiplicity, threads,
3791 debugging, 64bits, sfio, etc., are not checked for currently,
3792 though in principle we could go snooping around in old
3796 This variable holds the name of the compiler compiler we
3797 want to use in the Makefile. It can be yacc, byacc, or bison -y.
3800 This variable contains any additional yacc flags desired by the
3801 user. It is up to the Makefile to use this.
3804 This variable is defined but not used by Configure.
3805 The value is a plain '' and is not useful.
3808 This variable is used internally by Configure to determine the
3809 full pathname (if any) of the zip program. After Configure runs,
3810 the value is reset to a plain "zip" and is not useful.