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. Usual values are 2, 4 and 8.
31 ansi2knr (ansi2knr.U):
32 This variable is set if the user needs to run ansi2knr.
33 Currently, this is not supported, so we just abort.
35 aphostname (d_gethname.U):
36 This variable contains the command which can be used to compute the
37 host name. The command is fully qualified by its absolute path, to make
38 it safe when used by a process with super-user privileges.
40 apiversion (patchlevel.U):
41 MakeMaker will install add-on modules in a directory with the
42 PERL_APIVERSION version number. The value is set manually in
43 patchlevel.h. Normally, for maintenance releases, this is
44 just something like 5.005 or 5.6 or 5.7. That is, it does not
45 include the subversion number and does not change across
46 maintenance releases. This is so that add-on extensions can
47 be shared across maintenance versions. It is unclear how this
48 ought to work for developer versions. If a release breaks
49 binary compatibility, this number should be increased.
52 This variable is used internally by Configure to determine the
53 full pathname (if any) of the ar program. After Configure runs,
54 the value is reset to a plain "ar" and is not useful.
57 This variable holds the name of the directory in which the user wants
58 to put architecture-dependent public library files for $package.
59 It is most often a local directory such as /usr/local/lib.
60 Programs using this variable must be prepared to deal
61 with filename expansion.
63 archlibexp (archlib.U):
64 This variable is the same as the archlib variable, but is
65 filename expanded at configuration time, for convenient use.
67 archname64 (use64bits.U):
68 This variable is used for the 64-bitness part of $archname.
70 archname (archname.U):
71 This variable is a short name to characterize the current
72 architecture. It is used mainly to construct the default archlib.
75 This variable defines any additional objects that must be linked
76 in with the program on this architecture. On unix, it is usually
77 empty. It is typically used to include emulations of unix calls
78 or other facilities. For perl on OS/2, for example, this would
82 This variable is used internally by Configure to determine the
83 full pathname (if any) of the awk program. After Configure runs,
84 the value is reset to a plain "awk" and is not useful.
87 The base revision level of this package, from the .package file.
90 This variable is defined but not used by Configure.
91 The value is a plain '' and is not useful.
94 This variable holds the name of the directory in which the user wants
95 to put publicly executable images for the package in question. It
96 is most often a local directory such as /usr/local/bin. Programs using
97 this variable must be prepared to deal with ~name substitution.
99 bincompat5005 (bincompat5005.U):
100 This variable contains y if Perl 5.006 should be binary-compatible
104 This is the same as the bin variable, but is filename expanded at
105 configuration time, for use in your makefiles.
108 This variable is defined but not used by Configure.
109 The value is a plain '' and is not useful.
112 This variable is used internally by Configure to determine the
113 full pathname (if any) of the byacc program. After Configure runs,
114 the value is reset to a plain "byacc" and is not useful.
116 byteorder (byteorder.U):
117 This variable holds the byte order. In the following, larger digits
118 indicate more significance. The variable byteorder is either 4321
119 on a big-endian machine, or 1234 on a little-endian, or 87654321
120 on a Cray ... or 3412 with weird order !
123 This variable contains the \c string if that is what causes the echo
124 command to suppress newline. Otherwise it is null. Correct usage is
125 $echo $n "prompt for a question: $c".
127 castflags (d_castneg.U):
128 This variable contains a flag that precise difficulties the
129 compiler has casting odd floating values to unsigned long:
131 1 = couldn't cast < 0
132 2 = couldn't cast >= 0x80000000
133 4 = couldn't cast in argument expression list
136 This variable is used internally by Configure to determine the
137 full pathname (if any) of the cat program. After Configure runs,
138 the value is reset to a plain "cat" and is not useful.
141 This variable holds the name of a command to execute a C compiler which
142 can resolve multiple global references that happen to have the same
143 name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'.
145 cccdlflags (dlsrc.U):
146 This variable contains any special flags that might need to be
147 passed with 'cc -c' to compile modules to be used to create a shared
148 library that will be used for dynamic loading. For hpux, this
149 should be +z. It is up to the makefile to use it.
152 This variable contains any special flags that might need to be
153 passed to cc to link with a shared library for dynamic loading.
154 It is up to the makefile to use it. For sunos 4.1, it should
158 This variable contains any additional C compiler flags desired by
159 the user. It is up to the Makefile to use this.
161 ccsymbols (Cppsym.U):
162 The variable contains the symbols defined by the C compiler alone.
163 The symbols defined by cpp or by cc when it calls cpp are not in
164 this list, see cppsymbols and cppccsymbols.
165 The list is a space-separated list of symbol=value tokens.
168 Login name of the person who ran the Configure script and answered the
169 questions. This is used to tag both config.sh and config_h.SH.
171 cf_email (cf_email.U):
172 Electronic mail address of the person who ran Configure. This can be
173 used by units that require the user's e-mail, like MailList.U.
176 Holds the output of the "date" command when the configuration file was
177 produced. This is used to tag both config.sh and config_h.SH.
180 This variable is defined but not used by Configure.
181 The value is a plain '' and is not useful.
184 This variable is defined but not used by Configure.
185 The value is a plain '' and is not useful.
188 This variable is defined but not used by Configure.
189 The value is a plain '' and is not useful.
191 clocktype (d_times.U):
192 This variable holds the type returned by times(). It can be long,
193 or clock_t on BSD sites (in which case <sys/types.h> should be
197 This variable is used internally by Configure to determine the
198 full pathname (if any) of the comm program. After Configure runs,
199 the value is reset to a plain "comm" and is not useful.
202 This variable is defined but not used by Configure.
203 The value is a plain '' and is not useful.
205 contains (contains.U):
206 This variable holds the command to do a grep with a proper return
207 status. On most sane systems it is simply "grep". On insane systems
208 it is a grep followed by a cat followed by a test. This variable
209 is primarily for the use of other Configure units.
212 This variable is used internally by Configure to determine the
213 full pathname (if any) of the cp program. After Configure runs,
214 the value is reset to a plain "cp" and is not useful.
217 This variable is defined but not used by Configure.
218 The value is a plain '' and is not useful.
221 This variable is used internally by Configure to determine the
222 full pathname (if any) of the cpp program. After Configure runs,
223 the value is reset to a plain "cpp" and is not useful.
225 cpp_stuff (cpp_stuff.U):
226 This variable contains an identification of the catenation mechanism
227 used by the C preprocessor.
229 cppccsymbols (Cppsym.U):
230 The variable contains the symbols defined by the C compiler when
231 when it calls cpp. The symbols defined by the cc alone or cpp
232 alone are not in this list, see ccsymbols and cppsymbols.
233 The list is a space-separated list of symbol=value tokens.
235 cppflags (ccflags.U):
236 This variable holds the flags that will be passed to the C pre-
237 processor. It is up to the Makefile to use it.
239 cpplast (cppstdin.U):
240 This variable has the same functionality as cppminus, only it applies
241 to cpprun and not cppstdin.
243 cppminus (cppstdin.U):
244 This variable contains the second part of the string which will invoke
245 the C preprocessor on the standard input and produce to standard
246 output. This variable will have the value "-" if cppstdin needs
247 a minus to specify standard input, otherwise the value is "".
250 This variable contains the command which will invoke a C preprocessor
251 on standard input and put the output to stdout. It is guaranteed not
252 to be a wrapper and may be a null string if no preprocessor can be
253 made directly available. This preprocessor might be different from the
254 one used by the C compiler. Don't forget to append cpplast after the
255 preprocessor options.
257 cppstdin (cppstdin.U):
258 This variable contains the command which will invoke the C
259 preprocessor on standard input and put the output to stdout.
260 It is primarily used by other Configure units that ask about
261 preprocessor symbols.
263 cppsymbols (Cppsym.U):
264 The variable contains the symbols defined by the C preprocessor
265 alone. The symbols defined by cc or by cc when it calls cpp are
266 not in this list, see ccsymbols and cppccsymbols.
267 The list is a space-separated list of symbol=value tokens.
269 crosscompile (crosscompile.U):
270 This variable conditionally defines the CROSSCOMPILE symbol
271 which signifies that the build process is be a cross-compilation.
272 This is normally set by hints files or from Configure command line.
274 cryptlib (d_crypt.U):
275 This variable holds -lcrypt or the path to a libcrypt.a archive if
276 the crypt() function is not defined in the standard C library. It is
277 up to the Makefile to use this.
280 This variable is used internally by Configure to determine the
281 full pathname (if any) of the csh program. After Configure runs,
282 the value is reset to a plain "csh" and is not useful.
284 d_access (d_access.U):
285 This variable conditionally defines HAS_ACCESS if the access() system
286 call is available to check for access permissions using real IDs.
288 d_accessx (d_accessx.U):
289 This variable conditionally defines the HAS_ACCESSX symbol, which
290 indicates to the C program that the accessx() routine is available.
293 This variable conditionally defines the HAS_ALARM symbol, which
294 indicates to the C program that the alarm() routine is available.
296 d_archlib (archlib.U):
297 This variable conditionally defines ARCHLIB to hold the pathname
298 of architecture-dependent library files for $package. If
299 $archlib is the same as $privlib, then this is set to undef.
302 This variable conditionally defines the HAS_ATOLF symbol, which
303 indicates to the C program that the atolf() routine is available.
306 This variable conditionally defines the HAS_ATOLL symbol, which
307 indicates to the C program that the atoll() routine is available.
309 d_attribut (d_attribut.U):
310 This variable conditionally defines HASATTRIBUTE, which
311 indicates the C compiler can check for function attributes,
312 such as printf formats.
315 This variable conditionally defines the HAS_BCMP symbol if
316 the bcmp() routine is available to compare strings.
319 This variable conditionally defines the HAS_BCOPY symbol if
320 the bcopy() routine is available to copy strings.
322 d_bincompat5005 (bincompat5005.U):
323 This variable conditionally defines BINCOMPAT5005 so that embed.h
324 can take special action if Perl 5.006 should be binary-compatible
325 with Perl 5.005. This is impossible for builds that use features
326 like threads and multiplicity it is always $undef for those versions.
329 This symbol conditionally defines the symbol BSD when running on a
332 d_bsdgetpgrp (d_getpgrp.U):
333 This variable conditionally defines USE_BSD_GETPGRP if
334 getpgrp needs one arguments whereas USG one needs none.
336 d_bsdsetpgrp (d_setpgrp.U):
337 This variable conditionally defines USE_BSD_SETPGRP if
338 setpgrp needs two arguments whereas USG one needs none.
339 See also d_setpgid for a POSIX interface.
342 This variable conditionally defines the HAS_BZERO symbol if
343 the bzero() routine is available to set memory to 0.
345 d_casti32 (d_casti32.U):
346 This variable conditionally defines CASTI32, which indicates
347 whether the C compiler can cast large floats to 32-bit ints.
349 d_castneg (d_castneg.U):
350 This variable conditionally defines CASTNEG, which indicates
351 wether the C compiler can cast negative float to unsigned.
353 d_charvspr (d_vprintf.U):
354 This variable conditionally defines CHARVSPRINTF if this system
355 has vsprintf returning type (char*). The trend seems to be to
356 declare it as "int vsprintf()".
359 This variable conditionally defines the HAS_CHOWN symbol, which
360 indicates to the C program that the chown() routine is available.
362 d_chroot (d_chroot.U):
363 This variable conditionally defines the HAS_CHROOT symbol, which
364 indicates to the C program that the chroot() routine is available.
366 d_chsize (d_chsize.U):
367 This variable conditionally defines the CHSIZE symbol, which
368 indicates to the C program that the chsize() routine is available
369 to truncate files. You might need a -lx to get this routine.
371 d_closedir (d_closedir.U):
372 This variable conditionally defines HAS_CLOSEDIR if closedir() is
375 d_cmsghdr_s (d_socket.U):
376 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
377 which indicates that the the struct cmsghdr is supported.
380 This variable conditionally defines the HASCONST symbol, which
381 indicates to the C program that this C compiler knows about the
385 This variable conditionally defines the CRYPT symbol, which
386 indicates to the C program that the crypt() routine is available
387 to encrypt passwords and the like.
390 This variable conditionally defines the CSH symbol, which
391 indicates to the C program that the C-shell exists.
393 d_cuserid (d_cuserid.U):
394 This variable conditionally defines the HAS_CUSERID symbol, which
395 indicates to the C program that the cuserid() routine is available
396 to get character login names.
398 d_dbl_dig (d_dbl_dig.U):
399 This variable conditionally defines d_dbl_dig if this system's
400 header files provide DBL_DIG, which is the number of significant
401 digits in a double precision number.
403 d_difftime (d_difftime.U):
404 This variable conditionally defines the HAS_DIFFTIME symbol, which
405 indicates to the C program that the difftime() routine is available.
407 d_dirnamlen (i_dirent.U):
408 This variable conditionally defines DIRNAMLEN, which indicates
409 to the C program that the length of directory entry names is
410 provided by a d_namelen field.
412 d_dlerror (d_dlerror.U):
413 This variable conditionally defines the HAS_DLERROR symbol, which
414 indicates to the C program that the dlerror() routine is available.
416 d_dlopen (d_dlopen.U):
417 This variable conditionally defines the HAS_DLOPEN symbol, which
418 indicates to the C program that the dlopen() routine is available.
420 d_dlsymun (d_dlsymun.U):
421 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
422 indicates that we need to prepend an underscore to the symbol
423 name before calling dlsym().
425 d_dosuid (d_dosuid.U):
426 This variable conditionally defines the symbol DOSUID, which
427 tells the C program that it should insert setuid emulation code
428 on hosts which have setuid #! scripts disabled.
430 d_drand48proto (d_drand48proto.U):
431 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
432 which indicates to the C program that the system provides
433 a prototype for the drand48() function. Otherwise, it is
434 up to the program to supply one.
437 This variable conditionally defines HAS_DUP2 if dup2() is
438 available to duplicate file descriptors.
440 d_eaccess (d_eaccess.U):
441 This variable conditionally defines the HAS_EACCESS symbol, which
442 indicates to the C program that the eaccess() routine is available.
444 d_endgrent (d_endgrent.U):
445 This variable conditionally defines the HAS_ENDGRENT symbol, which
446 indicates to the C program that the endgrent() routine is available
447 for sequential access of the group database.
449 d_endhent (d_endhent.U):
450 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
451 available to close whatever was being used for host queries.
453 d_endnent (d_endnent.U):
454 This variable conditionally defines HAS_ENDNETENT if endnetent() is
455 available to close whatever was being used for network queries.
457 d_endpent (d_endpent.U):
458 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
459 available to close whatever was being used for protocol queries.
461 d_endpwent (d_endpwent.U):
462 This variable conditionally defines the HAS_ENDPWENT symbol, which
463 indicates to the C program that the endpwent() routine is available
464 for sequential access of the passwd database.
466 d_endsent (d_endsent.U):
467 This variable conditionally defines HAS_ENDSERVENT if endservent() is
468 available to close whatever was being used for service queries.
470 d_endspent (d_endspent.U):
471 This variable conditionally defines HAS_ENDSPENT if endspent() is
472 available to finalize the scan of SysV shadow password entries.
474 d_eofnblk (nblock_io.U):
475 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
476 when reading from a non-blocking I/O source.
479 This variable conditionally defines the symbols EUNICE and VAX, which
480 alerts the C program that it must deal with ideosyncracies of VMS.
482 d_fchmod (d_fchmod.U):
483 This variable conditionally defines the HAS_FCHMOD symbol, which
484 indicates to the C program that the fchmod() routine is available
485 to change mode of opened files.
487 d_fchown (d_fchown.U):
488 This variable conditionally defines the HAS_FCHOWN symbol, which
489 indicates to the C program that the fchown() routine is available
490 to change ownership of opened files.
493 This variable conditionally defines the HAS_FCNTL symbol, and indicates
494 whether the fcntl() function exists
496 d_fd_macros (d_fd_set.U):
497 This variable contains the eventual value of the HAS_FD_MACROS symbol,
498 which indicates if your C compiler knows about the macros which
499 manipulate an fd_set.
501 d_fd_set (d_fd_set.U):
502 This variable contains the eventual value of the HAS_FD_SET symbol,
503 which indicates if your C compiler knows about the fd_set typedef.
505 d_fds_bits (d_fd_set.U):
506 This variable contains the eventual value of the HAS_FDS_BITS symbol,
507 which indicates if your fd_set typedef contains the fds_bits member.
508 If you have an fd_set typedef, but the dweebs who installed it did
509 a half-fast job and neglected to provide the macros to manipulate
510 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
512 d_fgetpos (d_fgetpos.U):
513 This variable conditionally defines HAS_FGETPOS if fgetpos() is
514 available to get the file position indicator.
516 d_flexfnam (d_flexfnam.U):
517 This variable conditionally defines the FLEXFILENAMES symbol, which
518 indicates that the system supports filenames longer than 14 characters.
521 This variable conditionally defines HAS_FLOCK if flock() is
522 available to do file locking.
525 This variable conditionally defines the HAS_FORK symbol, which
526 indicates to the C program that the fork() routine is available.
528 d_fpathconf (d_pathconf.U):
529 This variable conditionally defines the HAS_FPATHCONF symbol, which
530 indicates to the C program that the pathconf() routine is available
531 to determine file-system related limits and options associated
532 with a given open file descriptor.
535 This symbol will be defined if the C compiler supports fpos64_t.
537 d_fseeko (d_fseeko.U):
538 This variable conditionally defines the HAS_FSEEKO symbol, which
539 indicates to the C program that the fseeko() routine is available.
541 d_fsetpos (d_fsetpos.U):
542 This variable conditionally defines HAS_FSETPOS if fsetpos() is
543 available to set the file position indicator.
545 d_fstatfs (d_statfs.U):
546 This variable conditionally defines the HAS_FSTATFS symbol, which
547 indicates to the C program that the fstatfs() routine is available.
549 d_fstatvfs (d_statvfs.U):
550 This variable conditionally defines the HAS_FSTATVFS symbol, which
551 indicates to the C program that the fstatvfs() routine is available.
553 d_ftello (d_ftello.U):
554 This variable conditionally defines the HAS_FTELLO symbol, which
555 indicates to the C program that the ftello() routine is available.
558 This variable conditionally defines the HAS_FTIME symbol, which indicates
559 that the ftime() routine exists. The ftime() routine is basically
560 a sub-second accuracy clock.
562 d_Gconvert (d_gconvert.U):
563 This variable holds what Gconvert is defined as to convert
564 floating point numbers into strings. It could be 'gconvert'
565 or a more complex macro emulating gconvert with gcvt() or sprintf.
567 d_Gconvert='gconvert((x),(n),(t),(b))'
568 d_Gconvert='gcvt((x),(n),(b))'
569 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
571 d_getgrent (d_getgrent.U):
572 This variable conditionally defines the HAS_GETGRENT symbol, which
573 indicates to the C program that the getgrent() routine is available
574 for sequential access of the group database.
576 d_getgrps (d_getgrps.U):
577 This variable conditionally defines the HAS_GETGROUPS symbol, which
578 indicates to the C program that the getgroups() routine is available
579 to get the list of process groups.
581 d_gethbyaddr (d_gethbyad.U):
582 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
583 indicates to the C program that the gethostbyaddr() routine is available
584 to look up hosts by their IP addresses.
586 d_gethbyname (d_gethbynm.U):
587 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
588 indicates to the C program that the gethostbyname() routine is available
589 to look up host names in some data base or other.
591 d_gethent (d_gethent.U):
592 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
593 available to look up host names in some data base or another.
595 d_gethname (d_gethname.U):
596 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
597 indicates to the C program that the gethostname() routine may be
598 used to derive the host name.
600 d_gethostprotos (d_gethostprotos.U):
601 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
602 which indicates to the C program that <netdb.h> supplies
603 prototypes for the various gethost*() functions.
604 See also netdbtype.U for probing for various netdb types.
606 d_getlogin (d_getlogin.U):
607 This variable conditionally defines the HAS_GETLOGIN symbol, which
608 indicates to the C program that the getlogin() routine is available
609 to get the login name.
611 d_getmntent (d_getmntent.U):
612 This variable conditionally defines the HAS_GETMNTENT symbol, which
613 indicates to the C program that the getmntent() routine is available
614 to iterate through mounted files.
616 d_getnbyaddr (d_getnbyad.U):
617 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
618 indicates to the C program that the getnetbyaddr() routine is available
619 to look up networks by their IP addresses.
621 d_getnbyname (d_getnbynm.U):
622 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
623 indicates to the C program that the getnetbyname() routine is available
624 to look up networks by their names.
626 d_getnent (d_getnent.U):
627 This variable conditionally defines HAS_GETNETENT if getnetent() is
628 available to look up network names in some data base or another.
630 d_getnetprotos (d_getnetprotos.U):
631 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
632 which indicates to the C program that <netdb.h> supplies
633 prototypes for the various getnet*() functions.
634 See also netdbtype.U for probing for various netdb types.
636 d_getpbyname (d_getprotby.U):
637 This variable conditionally defines the HAS_GETPROTOBYNAME
638 symbol, which indicates to the C program that the
639 getprotobyname() routine is available to look up protocols
642 d_getpbynumber (d_getprotby.U):
643 This variable conditionally defines the HAS_GETPROTOBYNUMBER
644 symbol, which indicates to the C program that the
645 getprotobynumber() routine is available to look up protocols
648 d_getpent (d_getpent.U):
649 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
650 available to look up protocols in some data base or another.
652 d_getpgid (d_getpgid.U):
653 This variable conditionally defines the HAS_GETPGID symbol, which
654 indicates to the C program that the getpgid(pid) function
655 is available to get the process group id.
657 d_getpgrp2 (d_getpgrp2.U):
658 This variable conditionally defines the HAS_GETPGRP2 symbol, which
659 indicates to the C program that the getpgrp2() (as in DG/UX) routine
660 is available to get the current process group.
662 d_getpgrp (d_getpgrp.U):
663 This variable conditionally defines HAS_GETPGRP if getpgrp() is
664 available to get the current process group.
666 d_getppid (d_getppid.U):
667 This variable conditionally defines the HAS_GETPPID symbol, which
668 indicates to the C program that the getppid() routine is available
669 to get the parent process ID.
671 d_getprior (d_getprior.U):
672 This variable conditionally defines HAS_GETPRIORITY if getpriority()
673 is available to get a process's priority.
675 d_getprotoprotos (d_getprotoprotos.U):
676 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
677 which indicates to the C program that <netdb.h> supplies
678 prototypes for the various getproto*() functions.
679 See also netdbtype.U for probing for various netdb types.
681 d_getpwent (d_getpwent.U):
682 This variable conditionally defines the HAS_GETPWENT symbol, which
683 indicates to the C program that the getpwent() routine is available
684 for sequential access of the passwd database.
686 d_getsbyname (d_getsrvby.U):
687 This variable conditionally defines the HAS_GETSERVBYNAME
688 symbol, which indicates to the C program that the
689 getservbyname() routine is available to look up services
692 d_getsbyport (d_getsrvby.U):
693 This variable conditionally defines the HAS_GETSERVBYPORT
694 symbol, which indicates to the C program that the
695 getservbyport() routine is available to look up services
698 d_getsent (d_getsent.U):
699 This variable conditionally defines HAS_GETSERVENT if getservent() is
700 available to look up network services in some data base or another.
702 d_getservprotos (d_getservprotos.U):
703 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
704 which indicates to the C program that <netdb.h> supplies
705 prototypes for the various getserv*() functions.
706 See also netdbtype.U for probing for various netdb types.
708 d_getspent (d_getspent.U):
709 This variable conditionally defines HAS_GETSPENT if getspent() is
710 available to retrieve SysV shadow password entries sequentially.
712 d_getspnam (d_getspnam.U):
713 This variable conditionally defines HAS_GETSPNAM if getspnam() is
714 available to retrieve SysV shadow password entries by name.
716 d_gettimeod (d_ftime.U):
717 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
718 indicates that the gettimeofday() system call exists (to obtain a
719 sub-second accuracy clock). You should probably include <sys/resource.h>.
721 d_gnulibc (d_gnulibc.U):
722 Defined if we're dealing with the GNU C Library.
724 d_grpasswd (i_grp.U):
725 This variable conditionally defines GRPASSWD, which indicates
726 that struct group in <grp.h> contains gr_passwd.
728 d_hasmntopt (d_hasmntopt.U):
729 This variable conditionally defines the HAS_HASMNTOPT symbol, which
730 indicates to the C program that the hasmntopt() routine is available
731 to query the mount options of file systems.
734 This variable conditionally defines HAS_HTONL if htonl() and its
735 friends are available to do network order byte swapping.
737 d_index (d_strchr.U):
738 This variable conditionally defines HAS_INDEX if index() and
739 rindex() are available for string searching.
741 d_inetaton (d_inetaton.U):
742 This variable conditionally defines the HAS_INET_ATON symbol, which
743 indicates to the C program that the inet_aton() function is available
744 to parse IP address "dotted-quad" strings.
746 d_int64t (i_inttypes.U):
747 This symbol will be defined if the C compiler supports int64_t.
749 d_iovec_s (i_sysuio.U):
750 This variable conditionally defines the HAS_STRUCT_IOVEC symbol,
751 which indicates that the struct iovec is supported.
753 d_isascii (d_isascii.U):
754 This variable conditionally defines the HAS_ISASCII constant,
755 which indicates to the C program that isascii() is available.
757 d_killpg (d_killpg.U):
758 This variable conditionally defines the HAS_KILLPG symbol, which
759 indicates to the C program that the killpg() routine is available
760 to kill process groups.
762 d_lchown (d_lchown.U):
763 This variable conditionally defines the HAS_LCHOWN symbol, which
764 indicates to the C program that the lchown() routine is available
765 to operate on a symbolic link (instead of following the link).
767 d_ldbl_dig (d_ldbl_dig.U):
768 This variable conditionally defines d_ldbl_dig if this system's
769 header files provide LDBL_DIG, which is the number of significant
770 digits in a long double precision number.
773 This variable conditionally defines HAS_LINK if link() is
774 available to create hard links.
777 This variable conditionally defines the HAS_LLSEEK symbol, which
778 indicates to the C program that the llseek() routine is available.
780 d_locconv (d_locconv.U):
781 This variable conditionally defines HAS_LOCALECONV if localeconv() is
782 available for numeric and monetary formatting conventions.
785 This variable conditionally defines HAS_LOCKF if lockf() is
786 available to do file locking.
788 d_longdbl (d_longdbl.U):
789 This variable conditionally defines HAS_LONG_DOUBLE if
790 the long double type is supported.
792 d_longlong (d_longlong.U):
793 This variable conditionally defines HAS_LONG_LONG if
794 the long long type is supported.
797 This variable conditionally defines HAS_LSTAT if lstat() is
798 available to do file stats on symbolic links.
800 d_madvise (d_madvise.U):
801 This variable conditionally defines HAS_MADVISE if madvise() is
802 available to map a file into memory.
805 This variable conditionally defines the HAS_MBLEN symbol, which
806 indicates to the C program that the mblen() routine is available
807 to find the number of bytes in a multibye character.
809 d_mbstowcs (d_mbstowcs.U):
810 This variable conditionally defines the HAS_MBSTOWCS symbol, which
811 indicates to the C program that the mbstowcs() routine is available
812 to convert a multibyte string into a wide character string.
814 d_mbtowc (d_mbtowc.U):
815 This variable conditionally defines the HAS_MBTOWC symbol, which
816 indicates to the C program that the mbtowc() routine is available
817 to convert multibyte to a wide character.
819 d_memchr (d_memchr.U):
820 This variable conditionally defines the HAS_MEMCHR symbol, which
821 indicates to the C program that the memchr() routine is available
822 to locate characters within a C string.
824 d_memcmp (d_memcmp.U):
825 This variable conditionally defines the HAS_MEMCMP symbol, which
826 indicates to the C program that the memcmp() routine is available
827 to compare blocks of memory.
829 d_memcpy (d_memcpy.U):
830 This variable conditionally defines the HAS_MEMCPY symbol, which
831 indicates to the C program that the memcpy() routine is available
832 to copy blocks of memory.
834 d_memmove (d_memmove.U):
835 This variable conditionally defines the HAS_MEMMOVE symbol, which
836 indicates to the C program that the memmove() routine is available
837 to copy potentatially overlapping blocks of memory.
839 d_memset (d_memset.U):
840 This variable conditionally defines the HAS_MEMSET symbol, which
841 indicates to the C program that the memset() routine is available
842 to set blocks of memory.
845 This variable conditionally defines the HAS_MKDIR symbol, which
846 indicates to the C program that the mkdir() routine is available
847 to create directories..
849 d_mkfifo (d_mkfifo.U):
850 This variable conditionally defines the HAS_MKFIFO symbol, which
851 indicates to the C program that the mkfifo() routine is available.
853 d_mktime (d_mktime.U):
854 This variable conditionally defines the HAS_MKTIME symbol, which
855 indicates to the C program that the mktime() routine is available.
858 This variable conditionally defines HAS_MMAP if mmap() is
859 available to map a file into memory.
861 d_mprotect (d_mprotect.U):
862 This variable conditionally defines HAS_MPROTECT if mprotect() is
863 available to modify the access protection of a memory mapped file.
866 This variable conditionally defines the HAS_MSG symbol, which
867 indicates that the entire msg*(2) library is present.
869 d_msg_ctrunc (d_socket.U):
870 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
871 which indicates that the MSG_CTRUNC is available. #ifdef is
872 not enough because it may be an enum, glibc has been known to do this.
874 d_msg_dontroute (d_socket.U):
875 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
876 which indicates that the MSG_DONTROUTE is available. #ifdef is
877 not enough because it may be an enum, glibc has been known to do this.
879 d_msg_oob (d_socket.U):
880 This variable conditionally defines the HAS_MSG_OOB symbol,
881 which indicates that the MSG_OOB is available. #ifdef is
882 not enough because it may be an enum, glibc has been known to do this.
884 d_msg_peek (d_socket.U):
885 This variable conditionally defines the HAS_MSG_PEEK symbol,
886 which indicates that the MSG_PEEK is available. #ifdef is
887 not enough because it may be an enum, glibc has been known to do this.
889 d_msg_proxy (d_socket.U):
890 This variable conditionally defines the HAS_MSG_PROXY symbol,
891 which indicates that the MSG_PROXY is available. #ifdef is
892 not enough because it may be an enum, glibc has been known to do this.
894 d_msgctl (d_msgctl.U):
895 This variable conditionally defines the HAS_MSGCTL symbol, which
896 indicates to the C program that the msgctl() routine is available.
898 d_msgget (d_msgget.U):
899 This variable conditionally defines the HAS_MSGGET symbol, which
900 indicates to the C program that the msgget() routine is available.
902 d_msghdr_s (d_socket.U):
903 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
904 which indicates that the struct msghdr is supported.
906 d_msgrcv (d_msgrcv.U):
907 This variable conditionally defines the HAS_MSGRCV symbol, which
908 indicates to the C program that the msgrcv() routine is available.
910 d_msgsnd (d_msgsnd.U):
911 This variable conditionally defines the HAS_MSGSND symbol, which
912 indicates to the C program that the msgsnd() routine is available.
915 This variable conditionally defines HAS_MSYNC if msync() is
916 available to synchronize a mapped file.
918 d_munmap (d_munmap.U):
919 This variable conditionally defines HAS_MUNMAP if munmap() is
920 available to unmap a region mapped by mmap().
922 d_mymalloc (mallocsrc.U):
923 This variable conditionally defines MYMALLOC in case other parts
924 of the source want to take special action if MYMALLOC is used.
925 This may include different sorts of profiling or error detection.
928 This variable conditionally defines the HAS_NICE symbol, which
929 indicates to the C program that the nice() routine is available.
932 This symbol will be defined if the C compiler supports off64_t.
934 d_old_pthread_create_joinable (d_pthrattrj.U):
935 This variable conditionally defines pthread_create_joinable.
936 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
938 d_oldpthreads (usethreads.U):
939 This variable conditionally defines the OLD_PTHREADS_API symbol,
940 and indicates that Perl should be built to use the old
941 draft POSIX threads API. This is only potentially meaningful if
944 d_oldsock (d_socket.U):
945 This variable conditionally defines the OLDSOCKET symbol, which
946 indicates that the BSD socket interface is based on 4.1c and not 4.2.
949 This variable conditionally defines the HAS_OPEN3 manifest constant,
950 which indicates to the C program that the 3 argument version of
951 the open(2) function is available.
953 d_pathconf (d_pathconf.U):
954 This variable conditionally defines the HAS_PATHCONF symbol, which
955 indicates to the C program that the pathconf() routine is available
956 to determine file-system related limits and options associated
957 with a given filename.
960 This variable conditionally defines the HAS_PAUSE symbol, which
961 indicates to the C program that the pause() routine is available
962 to suspend a process until a signal is received.
964 d_phostname (d_gethname.U):
965 This variable conditionally defines the HAS_PHOSTNAME symbol, which
966 contains the shell command which, when fed to popen(), may be
967 used to derive the host name.
970 This variable conditionally defines the HAS_PIPE symbol, which
971 indicates to the C program that the pipe() routine is available
972 to create an inter-process channel.
975 This variable conditionally defines the HAS_POLL symbol, which
976 indicates to the C program that the poll() routine is available
977 to poll active file descriptors.
979 d_portable (d_portable.U):
980 This variable conditionally defines the PORTABLE symbol, which
981 indicates to the C program that it should not assume that it is
982 running on the machine it was compiled on.
984 d_PRId64 (quadfio.U):
985 This variable conditionally defines the PERL_PRId64 symbol, which
986 indiciates that stdio has a symbol to print 64-bit decimal numbers.
988 d_PRIeldbl (longdblfio.U):
989 This variable conditionally defines the PERL_PRIfldlbl symbol, which
990 indiciates that stdio has a symbol to print long doubles.
992 d_PRIEldbl (longdblfio.U):
993 This variable conditionally defines the PERL_PRIfldlbl symbol, which
994 indiciates that stdio has a symbol to print long doubles.
996 d_PRIfldbl (longdblfio.U):
997 This variable conditionally defines the PERL_PRIfldlbl symbol, which
998 indiciates that stdio has a symbol to print long doubles.
1000 d_PRIFldbl (longdblfio.U):
1001 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1002 indiciates that stdio has a symbol to print long doubles.
1004 d_PRIgldbl (longdblfio.U):
1005 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1006 indiciates that stdio has a symbol to print long doubles.
1008 d_PRIGldbl (longdblfio.U):
1009 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1010 indiciates that stdio has a symbol to print long doubles.
1012 d_PRIi64 (quadfio.U):
1013 This variable conditionally defines the PERL_PRIi64 symbol, which
1014 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1016 d_PRIo64 (quadfio.U):
1017 This variable conditionally defines the PERL_PRIo64 symbol, which
1018 indiciates that stdio has a symbol to print 64-bit octal numbers.
1020 d_PRIu64 (quadfio.U):
1021 This variable conditionally defines the PERL_PRIu64 symbol, which
1022 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1025 d_PRIx64 (quadfio.U):
1026 This variable conditionally defines the PERL_PRIx64 symbol, which
1027 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1029 d_PRIX64 (quadfio.U):
1030 This variable conditionally defines the PERL_PRIX64 symbol, which
1031 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1033 d_pthread_yield (d_pthread_y.U):
1034 This variable conditionally defines the HAS_PTHREAD_YIELD
1035 symbol if the pthread_yield routine is available to yield
1036 the execution of the current thread.
1039 This variable conditionally defines PWAGE, which indicates
1040 that struct passwd contains pw_age.
1042 d_pwchange (i_pwd.U):
1043 This variable conditionally defines PWCHANGE, which indicates
1044 that struct passwd contains pw_change.
1046 d_pwclass (i_pwd.U):
1047 This variable conditionally defines PWCLASS, which indicates
1048 that struct passwd contains pw_class.
1050 d_pwcomment (i_pwd.U):
1051 This variable conditionally defines PWCOMMENT, which indicates
1052 that struct passwd contains pw_comment.
1054 d_pwexpire (i_pwd.U):
1055 This variable conditionally defines PWEXPIRE, which indicates
1056 that struct passwd contains pw_expire.
1058 d_pwgecos (i_pwd.U):
1059 This variable conditionally defines PWGECOS, which indicates
1060 that struct passwd contains pw_gecos.
1062 d_pwpasswd (i_pwd.U):
1063 This variable conditionally defines PWPASSWD, which indicates
1064 that struct passwd contains pw_passwd.
1066 d_pwquota (i_pwd.U):
1067 This variable conditionally defines PWQUOTA, which indicates
1068 that struct passwd contains pw_quota.
1070 d_readdir (d_readdir.U):
1071 This variable conditionally defines HAS_READDIR if readdir() is
1072 available to read directory entries.
1074 d_readlink (d_readlink.U):
1075 This variable conditionally defines the HAS_READLINK symbol, which
1076 indicates to the C program that the readlink() routine is available
1077 to read the value of a symbolic link.
1079 d_readv (d_readv.U):
1080 This variable conditionally defines the HAS_READV symbol, which
1081 indicates to the C program that the readv() routine is available.
1083 d_recvmsg (d_socket.U):
1084 This variable conditionally defines the HAS_RECVMSG symbol,
1085 which indicates that the recvmsg is supported.
1087 d_rename (d_rename.U):
1088 This variable conditionally defines the HAS_RENAME symbol, which
1089 indicates to the C program that the rename() routine is available
1092 d_rewinddir (d_readdir.U):
1093 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1096 d_rmdir (d_rmdir.U):
1097 This variable conditionally defines HAS_RMDIR if rmdir() is
1098 available to remove directories.
1100 d_safebcpy (d_safebcpy.U):
1101 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1102 the bcopy() routine can do overlapping copies.
1104 d_safemcpy (d_safemcpy.U):
1105 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1106 the memcpy() routine can do overlapping copies.
1108 d_sanemcmp (d_sanemcmp.U):
1109 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1110 the memcpy() routine is available and can be used to compare relative
1111 magnitudes of chars with their high bits set.
1113 d_sched_yield (d_pthread_y.U):
1114 This variable conditionally defines the HAS_SCHED_YIELD
1115 symbol if the sched_yield routine is available to yield
1116 the execution of the current thread.
1118 d_scm_rights (d_socket.U):
1119 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1120 which indicates that the SCM_RIGHTS is available. #ifdef is
1121 not enough because it may be an enum, glibc has been known to do this.
1123 d_seekdir (d_readdir.U):
1124 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1127 d_select (d_select.U):
1128 This variable conditionally defines HAS_SELECT if select() is
1129 available to select active file descriptors. A <sys/time.h>
1130 inclusion may be necessary for the timeout field.
1133 This variable conditionally defines the HAS_SEM symbol, which
1134 indicates that the entire sem*(2) library is present.
1136 d_semctl (d_semctl.U):
1137 This variable conditionally defines the HAS_SEMCTL symbol, which
1138 indicates to the C program that the semctl() routine is available.
1140 d_semctl_semid_ds (d_union_semun.U):
1141 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1142 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1144 d_semctl_semun (d_union_semun.U):
1145 This variable conditionally defines USE_SEMCTL_SEMUN, which
1146 indicates that union semun is to be used for semctl IPC_STAT.
1148 d_semget (d_semget.U):
1149 This variable conditionally defines the HAS_SEMGET symbol, which
1150 indicates to the C program that the semget() routine is available.
1152 d_semop (d_semop.U):
1153 This variable conditionally defines the HAS_SEMOP symbol, which
1154 indicates to the C program that the semop() routine is available.
1156 d_sendmsg (d_socket.U):
1157 This variable conditionally defines the HAS_SENDMSG symbol,
1158 which indicates that the sendmsg is supported.
1160 d_setegid (d_setegid.U):
1161 This variable conditionally defines the HAS_SETEGID symbol, which
1162 indicates to the C program that the setegid() routine is available
1163 to change the effective gid of the current program.
1165 d_seteuid (d_seteuid.U):
1166 This variable conditionally defines the HAS_SETEUID symbol, which
1167 indicates to the C program that the seteuid() routine is available
1168 to change the effective uid of the current program.
1170 d_setgrent (d_setgrent.U):
1171 This variable conditionally defines the HAS_SETGRENT symbol, which
1172 indicates to the C program that the setgrent() routine is available
1173 for initializing sequential access to the group database.
1175 d_setgrps (d_setgrps.U):
1176 This variable conditionally defines the HAS_SETGROUPS symbol, which
1177 indicates to the C program that the setgroups() routine is available
1178 to set the list of process groups.
1180 d_sethent (d_sethent.U):
1181 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1184 d_setlinebuf (d_setlnbuf.U):
1185 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1186 indicates to the C program that the setlinebuf() routine is available
1187 to change stderr or stdout from block-buffered or unbuffered to a
1190 d_setlocale (d_setlocale.U):
1191 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1192 available to handle locale-specific ctype implementations.
1194 d_setnent (d_setnent.U):
1195 This variable conditionally defines HAS_SETNETENT if setnetent() is
1198 d_setpent (d_setpent.U):
1199 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1202 d_setpgid (d_setpgid.U):
1203 This variable conditionally defines the HAS_SETPGID symbol if the
1204 setpgid(pid, gpid) function is available to set process group ID.
1206 d_setpgrp2 (d_setpgrp2.U):
1207 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1208 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1209 is available to set the current process group.
1211 d_setpgrp (d_setpgrp.U):
1212 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1213 available to set the current process group.
1215 d_setprior (d_setprior.U):
1216 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1217 is available to set a process's priority.
1219 d_setpwent (d_setpwent.U):
1220 This variable conditionally defines the HAS_SETPWENT symbol, which
1221 indicates to the C program that the setpwent() routine is available
1222 for initializing sequential access to the passwd database.
1224 d_setregid (d_setregid.U):
1225 This variable conditionally defines HAS_SETREGID if setregid() is
1226 available to change the real and effective gid of the current
1229 d_setresgid (d_setregid.U):
1230 This variable conditionally defines HAS_SETRESGID if setresgid() is
1231 available to change the real, effective and saved gid of the current
1234 d_setresuid (d_setreuid.U):
1235 This variable conditionally defines HAS_SETREUID if setresuid() is
1236 available to change the real, effective and saved uid of the current
1239 d_setreuid (d_setreuid.U):
1240 This variable conditionally defines HAS_SETREUID if setreuid() is
1241 available to change the real and effective uid of the current
1244 d_setrgid (d_setrgid.U):
1245 This variable conditionally defines the HAS_SETRGID symbol, which
1246 indicates to the C program that the setrgid() routine is available
1247 to change the real gid of the current program.
1249 d_setruid (d_setruid.U):
1250 This variable conditionally defines the HAS_SETRUID symbol, which
1251 indicates to the C program that the setruid() routine is available
1252 to change the real uid of the current program.
1254 d_setsent (d_setsent.U):
1255 This variable conditionally defines HAS_SETSERVENT if setservent() is
1258 d_setsid (d_setsid.U):
1259 This variable conditionally defines HAS_SETSID if setsid() is
1260 available to set the process group ID.
1262 d_setspent (d_setspent.U):
1263 This variable conditionally defines HAS_SETSPENT if setspent() is
1264 available to initialize the scan of SysV shadow password entries.
1266 d_setvbuf (d_setvbuf.U):
1267 This variable conditionally defines the HAS_SETVBUF symbol, which
1268 indicates to the C program that the setvbuf() routine is available
1269 to change buffering on an open stdio stream.
1272 This variable conditionally defines the USE_SFIO symbol,
1273 and indicates whether sfio is available (and should be used).
1276 This variable conditionally defines the HAS_SHM symbol, which
1277 indicates that the entire shm*(2) library is present.
1279 d_shmat (d_shmat.U):
1280 This variable conditionally defines the HAS_SHMAT symbol, which
1281 indicates to the C program that the shmat() routine is available.
1283 d_shmatprototype (d_shmat.U):
1284 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1285 symbol, which indicates that sys/shm.h has a prototype for
1288 d_shmctl (d_shmctl.U):
1289 This variable conditionally defines the HAS_SHMCTL symbol, which
1290 indicates to the C program that the shmctl() routine is available.
1292 d_shmdt (d_shmdt.U):
1293 This variable conditionally defines the HAS_SHMDT symbol, which
1294 indicates to the C program that the shmdt() routine is available.
1296 d_shmget (d_shmget.U):
1297 This variable conditionally defines the HAS_SHMGET symbol, which
1298 indicates to the C program that the shmget() routine is available.
1300 d_sigaction (d_sigaction.U):
1301 This variable conditionally defines the HAS_SIGACTION symbol, which
1302 indicates that the Vr4 sigaction() routine is available.
1304 d_sigsetjmp (d_sigsetjmp.U):
1305 This variable conditionally defines the HAS_SIGSETJMP symbol,
1306 which indicates that the sigsetjmp() routine is available to
1307 call setjmp() and optionally save the process's signal mask.
1309 d_socket (d_socket.U):
1310 This variable conditionally defines HAS_SOCKET, which indicates
1311 that the BSD socket interface is supported.
1313 d_sockpair (d_socket.U):
1314 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1315 indicates that the BSD socketpair() is supported.
1317 d_sqrtl (d_sqrtl.U):
1318 This variable conditionally defines the HAS_SQRTL symbol, which
1319 indicates to the C program that the sqrtl() routine is available.
1321 d_statblks (d_statblks.U):
1322 This variable conditionally defines USE_STAT_BLOCKS
1323 if this system has a stat structure declaring
1324 st_blksize and st_blocks.
1326 d_statfs (d_statfs.U):
1327 This variable conditionally defines the HAS_STATFS symbol, which
1328 indicates to the C program that the statfs() routine is available.
1330 d_statfsflags (d_statfs.U):
1331 This variable conditionally defines the HAS_STRUCT_STATFS_FLAGS
1332 symbol, which indicates to struct statfs from has f_flags member.
1333 This kind of struct statfs is coming from sys/mount.h (BSD),
1334 not from sys/statfs.h (SYSV).
1336 d_statvfs (d_statvfs.U):
1337 This variable conditionally defines the HAS_STATVFS symbol, which
1338 indicates to the C program that the statvfs() routine is available.
1340 d_stdio_cnt_lval (d_stdstdio.U):
1341 This variable conditionally defines STDIO_CNT_LVALUE if the
1342 FILE_cnt macro can be used as an lvalue.
1344 d_stdio_ptr_lval (d_stdstdio.U):
1345 This variable conditionally defines STDIO_PTR_LVALUE if the
1346 FILE_ptr macro can be used as an lvalue.
1348 d_stdio_stream_array (stdio_streams.U):
1349 This variable tells whether there is an array holding
1352 d_stdiobase (d_stdstdio.U):
1353 This variable conditionally defines USE_STDIO_BASE if this system
1354 has a FILE structure declaring a usable _base field (or equivalent)
1357 d_stdstdio (d_stdstdio.U):
1358 This variable conditionally defines USE_STDIO_PTR if this system
1359 has a FILE structure declaring usable _ptr and _cnt fields (or
1360 equivalent) in stdio.h.
1362 d_strchr (d_strchr.U):
1363 This variable conditionally defines HAS_STRCHR if strchr() and
1364 strrchr() are available for string searching.
1366 d_strcoll (d_strcoll.U):
1367 This variable conditionally defines HAS_STRCOLL if strcoll() is
1368 available to compare strings using collating information.
1370 d_strctcpy (d_strctcpy.U):
1371 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1372 indicates to the C program that this C compiler knows how to copy
1375 d_strerrm (d_strerror.U):
1376 This variable holds what Strerrr is defined as to translate an error
1377 code condition into an error message string. It could be 'strerror'
1378 or a more complex macro emulating strrror with sys_errlist[], or the
1379 "unknown" string when both strerror and sys_errlist are missing.
1381 d_strerror (d_strerror.U):
1382 This variable conditionally defines HAS_STRERROR if strerror() is
1383 available to translate error numbers to strings.
1385 d_strtod (d_strtod.U):
1386 This variable conditionally defines the HAS_STRTOD symbol, which
1387 indicates to the C program that the strtod() routine is available
1388 to provide better numeric string conversion than atof().
1390 d_strtol (d_strtol.U):
1391 This variable conditionally defines the HAS_STRTOL symbol, which
1392 indicates to the C program that the strtol() routine is available
1393 to provide better numeric string conversion than atoi() and friends.
1395 d_strtoul (d_strtoul.U):
1396 This variable conditionally defines the HAS_STRTOUL symbol, which
1397 indicates to the C program that the strtoul() routine is available
1398 to provide conversion of strings to unsigned long.
1400 d_strtoull (strtoull.U):
1401 This variable conditionally defines the HAS_STRTOULL symbol, which
1402 indicates to the C program that the strtoull() routine is available.
1404 d_strxfrm (d_strxfrm.U):
1405 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1406 available to transform strings.
1408 d_suidsafe (d_dosuid.U):
1409 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1410 if setuid scripts can be secure. This test looks in /dev/fd/.
1412 d_symlink (d_symlink.U):
1413 This variable conditionally defines the HAS_SYMLINK symbol, which
1414 indicates to the C program that the symlink() routine is available
1415 to create symbolic links.
1417 d_syscall (d_syscall.U):
1418 This variable conditionally defines HAS_SYSCALL if syscall() is
1419 available call arbitrary system calls.
1421 d_sysconf (d_sysconf.U):
1422 This variable conditionally defines the HAS_SYSCONF symbol, which
1423 indicates to the C program that the sysconf() routine is available
1424 to determine system related limits and options.
1426 d_sysernlst (d_strerror.U):
1427 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1428 is available to translate error numbers to the symbolic name.
1430 d_syserrlst (d_strerror.U):
1431 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1432 available to translate error numbers to strings.
1434 d_system (d_system.U):
1435 This variable conditionally defines HAS_SYSTEM if system() is
1436 available to issue a shell command.
1438 d_tcgetpgrp (d_tcgtpgrp.U):
1439 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1440 indicates to the C program that the tcgetpgrp() routine is available.
1441 to get foreground process group ID.
1443 d_tcsetpgrp (d_tcstpgrp.U):
1444 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1445 indicates to the C program that the tcsetpgrp() routine is available
1446 to set foreground process group ID.
1448 d_telldir (d_readdir.U):
1449 This variable conditionally defines HAS_TELLDIR if telldir() is
1452 d_telldirproto (d_telldirproto.U):
1453 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1454 which indicates to the C program that the system provides
1455 a prototype for the telldir() function. Otherwise, it is
1456 up to the program to supply one.
1459 This variable conditionally defines the HAS_TIME symbol, which indicates
1460 that the time() routine exists. The time() routine is normaly
1461 provided on UNIX systems.
1463 d_times (d_times.U):
1464 This variable conditionally defines the HAS_TIMES symbol, which indicates
1465 that the times() routine exists. The times() routine is normaly
1466 provided on UNIX systems. You may have to include <sys/times.h>.
1468 d_truncate (d_truncate.U):
1469 This variable conditionally defines HAS_TRUNCATE if truncate() is
1470 available to truncate files.
1472 d_tzname (d_tzname.U):
1473 This variable conditionally defines HAS_TZNAME if tzname[] is
1474 available to access timezone names.
1476 d_umask (d_umask.U):
1477 This variable conditionally defines the HAS_UMASK symbol, which
1478 indicates to the C program that the umask() routine is available.
1479 to set and get the value of the file creation mask.
1481 d_uname (d_gethname.U):
1482 This variable conditionally defines the HAS_UNAME symbol, which
1483 indicates to the C program that the uname() routine may be
1484 used to derive the host name.
1486 d_union_semun (d_union_semun.U):
1487 This variable conditionally defines HAS_UNION_SEMUN if the
1488 union semun is defined by including <sys/sem.h>.
1490 d_vendorlib (vendorlib.U):
1491 This variable conditionally defines PERL_VENDORLIB.
1493 d_vfork (d_vfork.U):
1494 This variable conditionally defines the HAS_VFORK symbol, which
1495 indicates the vfork() routine is available.
1497 d_void_closedir (d_closedir.U):
1498 This variable conditionally defines VOID_CLOSEDIR if closedir()
1499 does not return a value.
1501 d_voidsig (d_voidsig.U):
1502 This variable conditionally defines VOIDSIG if this system
1503 declares "void (*signal(...))()" in signal.h. The old way was to
1504 declare it as "int (*signal(...))()".
1506 d_voidtty (i_sysioctl.U):
1507 This variable conditionally defines USE_IOCNOTTY to indicate that the
1508 ioctl() call with TIOCNOTTY should be used to void tty association.
1509 Otherwise (on USG probably), it is enough to close the standard file
1510 decriptors and do a setpgrp().
1512 d_volatile (d_volatile.U):
1513 This variable conditionally defines the HASVOLATILE symbol, which
1514 indicates to the C program that this C compiler knows about the
1515 volatile declaration.
1517 d_vprintf (d_vprintf.U):
1518 This variable conditionally defines the HAS_VPRINTF symbol, which
1519 indicates to the C program that the vprintf() routine is available
1520 to printf with a pointer to an argument list.
1522 d_wait4 (d_wait4.U):
1523 This variable conditionally defines the HAS_WAIT4 symbol, which
1524 indicates the wait4() routine is available.
1526 d_waitpid (d_waitpid.U):
1527 This variable conditionally defines HAS_WAITPID if waitpid() is
1528 available to wait for child process.
1530 d_wcstombs (d_wcstombs.U):
1531 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1532 indicates to the C program that the wcstombs() routine is available
1533 to convert wide character strings to multibyte strings.
1535 d_wctomb (d_wctomb.U):
1536 This variable conditionally defines the HAS_WCTOMB symbol, which
1537 indicates to the C program that the wctomb() routine is available
1538 to convert a wide character to a multibyte.
1540 d_writev (d_writev.U):
1541 This variable conditionally defines the HAS_WRITEV symbol, which
1542 indicates to the C program that the writev() routine is available.
1545 This variable conditionally defines the symbol XENIX, which alerts
1546 the C program that it runs under Xenix.
1549 This variable is used internally by Configure to determine the
1550 full pathname (if any) of the date program. After Configure runs,
1551 the value is reset to a plain "date" and is not useful.
1553 db_hashtype (i_db.U):
1554 This variable contains the type of the hash structure element
1555 in the <db.h> header file. In older versions of DB, it was
1556 int, while in newer ones it is u_int32_t.
1558 db_prefixtype (i_db.U):
1559 This variable contains the type of the prefix structure element
1560 in the <db.h> header file. In older versions of DB, it was
1561 int, while in newer ones it is size_t.
1563 defvoidused (voidflags.U):
1564 This variable contains the default value of the VOIDUSED symbol (15).
1566 direntrytype (i_dirent.U):
1567 This symbol is set to 'struct direct' or 'struct dirent' depending on
1568 whether dirent is available or not. You should use this pseudo type to
1569 portably declare your directory entries.
1572 This variable contains the extension that is to be used for the
1573 dynamically loaded modules that perl generaties.
1576 This variable contains the name of the dynamic loading file that
1577 will be used with the package.
1579 doublesize (doublesize.U):
1580 This variable contains the value of the DOUBLESIZE symbol, which
1581 indicates to the C program how many bytes there are in a double.
1583 drand01 (randfunc.U):
1584 Indicates the macro to be used to generate normalized
1585 random numbers. Uses randfunc, often divided by
1586 (double) (((unsigned long) 1 << randbits)) in order to
1587 normalize the result.
1588 In C programs, the macro 'Drand01' is mapped to drand01.
1590 dynamic_ext (Extensions.U):
1591 This variable holds a list of XS extension files we want to
1592 link dynamically into the package. It is used by Makefile.
1594 eagain (nblock_io.U):
1595 This variable bears the symbolic errno code set by read() when no
1596 data is present on the file and non-blocking I/O was enabled (otherwise,
1597 read() blocks naturally).
1600 This variable conditionally defines EBCDIC if this
1601 system uses EBCDIC encoding. Among other things, this
1602 means that the character ranges are not contiguous.
1606 This variable is used internally by Configure to determine the
1607 full pathname (if any) of the echo program. After Configure runs,
1608 the value is reset to a plain "echo" and is not useful.
1611 This variable is used internally by Configure to determine the
1612 full pathname (if any) of the egrep program. After Configure runs,
1613 the value is reset to a plain "egrep" and is not useful.
1616 This variable is defined but not used by Configure.
1617 The value is a plain '' and is not useful.
1620 When running under Eunice this variable contains a command which will
1621 convert a shell script to the proper form of text file for it to be
1622 executable by the shell. On other systems it is a no-op.
1625 This is an old synonym for _exe.
1628 This variable is used internally by Configure to determine the
1629 full pathname (if any) of the expr program. After Configure runs,
1630 the value is reset to a plain "expr" and is not useful.
1632 extensions (Extensions.U):
1633 This variable holds a list of all extension files (both XS and
1634 non-xs linked into the package. It is propagated to Config.pm
1635 and is typically used to test whether a particular extesion
1638 fflushall (fflushall.U):
1639 This symbol, if defined, tells that to flush
1640 all pending stdio output one must loop through all
1641 the stdio file handles stored in an array and fflush them.
1642 Note that if fflushNULL is defined, fflushall will not
1643 even be probed for and will be left undefined.
1645 fflushNULL (fflushall.U):
1646 This symbol, if defined, tells that fflush(NULL) does flush
1647 all pending stdio output.
1650 This variable is defined but not used by Configure.
1651 The value is a plain '' and is not useful.
1653 firstmakefile (Unix.U):
1654 This variable defines the first file searched by make. On unix,
1655 it is makefile (then Makefile). On case-insensitive systems,
1656 it might be something else. This is only used to deal with
1657 convoluted make depend tricks.
1660 This variable is defined but not used by Configure.
1661 The value is a plain '' and is not useful.
1663 fpostype (fpostype.U):
1664 This variable defines Fpos_t to be something like fpost_t, long,
1665 uint, or whatever type is used to declare file positions in libc.
1667 freetype (mallocsrc.U):
1668 This variable contains the return type of free(). It is usually
1669 void, but occasionally int.
1672 This variable contains the full pathname to 'ar', whether or
1673 not the user has specified 'portability'. This is only used
1677 This variable contains the full pathname to 'csh', whether or
1678 not the user has specified 'portability'. This is only used
1679 in the compiled C program, and we assume that all systems which
1680 can share this executable will have the same full pathname to
1683 full_sed (Loc_sed.U):
1684 This variable contains the full pathname to 'sed', whether or
1685 not the user has specified 'portability'. This is only used
1686 in the compiled C program, and we assume that all systems which
1687 can share this executable will have the same full pathname to
1691 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1692 indicate whether the compiler is version 1 or 2. This is used in
1693 setting some of the default cflags. It is set to '' if not gcc.
1695 gidtype (gidtype.U):
1696 This variable defines Gid_t to be something like gid_t, int,
1697 ushort, or whatever type is used to declare the return type
1698 of getgid(). Typically, it is the type of group ids in the kernel.
1701 This variable holds the general path (space-separated) used to
1702 find libraries. It may contain directories that do not exist on
1703 this platform, libpth is the cleaned-up version.
1706 This variable is used internally by Configure to determine the
1707 full pathname (if any) of the grep program. After Configure runs,
1708 the value is reset to a plain "grep" and is not useful.
1711 This variable contains a command that produces the text of the
1712 /etc/group file. This is normally "cat /etc/group", but can be
1713 "ypcat group" when NIS is used.
1715 groupstype (groupstype.U):
1716 This variable defines Groups_t to be something like gid_t, int,
1717 ushort, or whatever type is used for the second argument to
1718 getgroups() and setgroups(). Usually, this is the same as
1719 gidtype (gid_t), but sometimes it isn't.
1722 This variable is used internally by Configure to determine the
1723 full pathname (if any) of the gzip program. After Configure runs,
1724 the value is reset to a plain "gzip" and is not useful.
1726 h_fcntl (h_fcntl.U):
1727 This is variable gets set in various places to tell i_fcntl that
1728 <fcntl.h> should be included.
1730 h_sysfile (h_sysfile.U):
1731 This is variable gets set in various places to tell i_sys_file that
1732 <sys/file.h> should be included.
1735 Gives the type of hints used for previous answers. May be one of
1736 "default", "recommended" or "previous".
1739 This variable contains a command that produces the text of the
1740 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1741 "ypcat hosts" when NIS is used.
1744 This variable contains a flag which will tell the C compiler and loader
1745 to produce a program running with a huge memory model. If the
1746 huge model is not supported, contains the flag to produce large
1747 model programs. It is up to the Makefile to use this.
1749 i_arpainet (i_arpainet.U):
1750 This variable conditionally defines the I_ARPA_INET symbol,
1751 and indicates whether a C program should include <arpa/inet.h>.
1753 i_bsdioctl (i_sysioctl.U):
1754 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1755 indicates to the C program that <sys/bsdioctl.h> exists and should
1759 This variable conditionally defines the I_DB symbol, and indicates
1760 whether a C program may include Berkeley's DB include file <db.h>.
1763 This variable conditionally defines the I_DBM symbol, which
1764 indicates to the C program that <dbm.h> exists and should
1767 i_dirent (i_dirent.U):
1768 This variable conditionally defines I_DIRENT, which indicates
1769 to the C program that it should include <dirent.h>.
1772 This variable conditionally defines the I_DLD symbol, which
1773 indicates to the C program that <dld.h> (GNU dynamic loading)
1774 exists and should be included.
1776 i_dlfcn (i_dlfcn.U):
1777 This variable conditionally defines the I_DLFCN symbol, which
1778 indicates to the C program that <dlfcn.h> exists and should
1781 i_fcntl (i_fcntl.U):
1782 This variable controls the value of I_FCNTL (which tells
1783 the C program to include <fcntl.h>).
1785 i_float (i_float.U):
1786 This variable conditionally defines the I_FLOAT symbol, and indicates
1787 whether a C program may include <float.h> to get symbols like DBL_MAX
1788 or DBL_MIN, i.e. machine dependent floating point values.
1791 This variable conditionally defines the I_GDBM symbol, which
1792 indicates to the C program that <gdbm.h> exists and should
1796 This variable conditionally defines the I_GRP symbol, and indicates
1797 whether a C program should include <grp.h>.
1799 i_inttypes (i_inttypes.U):
1800 This variable conditionally defines the I_INTTYPES symbol,
1801 and indicates whether a C program should include <inttypes.h>.
1803 i_limits (i_limits.U):
1804 This variable conditionally defines the I_LIMITS symbol, and indicates
1805 whether a C program may include <limits.h> to get symbols like WORD_BIT
1808 i_locale (i_locale.U):
1809 This variable conditionally defines the I_LOCALE symbol,
1810 and indicates whether a C program should include <locale.h>.
1812 i_machcthr (i_machcthr.U):
1813 This variable conditionally defines the I_MACH_CTHREADS symbol,
1814 and indicates whether a C program should include <mach/cthreads.h>.
1816 i_malloc (i_malloc.U):
1817 This variable conditionally defines the I_MALLOC symbol, and indicates
1818 whether a C program should include <malloc.h>.
1821 This variable conditionally defines the I_MATH symbol, and indicates
1822 whether a C program may include <math.h>.
1824 i_memory (i_memory.U):
1825 This variable conditionally defines the I_MEMORY symbol, and indicates
1826 whether a C program should include <memory.h>.
1828 i_mntent (i_mntent.U):
1829 This variable conditionally defines the I_MNTENT symbol, and indicates
1830 whether a C program should include <mntent.h>.
1833 This variable conditionally defines the I_NDBM symbol, which
1834 indicates to the C program that <ndbm.h> exists and should
1837 i_netdb (i_netdb.U):
1838 This variable conditionally defines the I_NETDB symbol, and indicates
1839 whether a C program should include <netdb.h>.
1841 i_neterrno (i_neterrno.U):
1842 This variable conditionally defines the I_NET_ERRNO symbol, which
1843 indicates to the C program that <net/errno.h> exists and should
1846 i_netinettcp (i_netinettcp.U):
1847 This variable conditionally defines the I_NETINET_TCP symbol,
1848 and indicates whether a C program should include <netinet/tcp.h>.
1851 This variable conditionally defines I_NETINET_IN, which indicates
1852 to the C program that it should include <netinet/in.h>. Otherwise,
1853 you may try <sys/in.h>.
1856 This variable conditionally defines the I_POLL symbol, and indicates
1857 whether a C program should include <poll.h>.
1859 i_pthread (i_pthread.U):
1860 This variable conditionally defines the I_PTHREAD symbol,
1861 and indicates whether a C program should include <pthread.h>.
1864 This variable conditionally defines I_PWD, which indicates
1865 to the C program that it should include <pwd.h>.
1867 i_rpcsvcdbm (i_dbm.U):
1868 This variable conditionally defines the I_RPCSVC_DBM symbol, which
1869 indicates to the C program that <rpcsvc/dbm.h> exists and should
1870 be included. Some System V systems might need this instead of <dbm.h>.
1873 This variable conditionally defines the I_SFIO symbol,
1874 and indicates whether a C program should include <sfio.h>.
1876 i_sgtty (i_termio.U):
1877 This variable conditionally defines the I_SGTTY symbol, which
1878 indicates to the C program that it should include <sgtty.h> rather
1881 i_shadow (i_shadow.U):
1882 This variable conditionally defines the I_SHADOW symbol, and indicates
1883 whether a C program should include <shadow.h>.
1885 i_socks (i_socks.U):
1886 This variable conditionally defines the I_SOCKS symbol, and indicates
1887 whether a C program should include <socks.h>.
1889 i_stdarg (i_varhdr.U):
1890 This variable conditionally defines the I_STDARG symbol, which
1891 indicates to the C program that <stdarg.h> exists and should
1894 i_stddef (i_stddef.U):
1895 This variable conditionally defines the I_STDDEF symbol, which
1896 indicates to the C program that <stddef.h> exists and should
1899 i_stdlib (i_stdlib.U):
1900 This variable conditionally defines the I_STDLIB symbol, which
1901 indicates to the C program that <stdlib.h> exists and should
1904 i_string (i_string.U):
1905 This variable conditionally defines the I_STRING symbol, which
1906 indicates that <string.h> should be included rather than <strings.h>.
1908 i_sysaccess (i_sysaccess.U):
1909 This variable conditionally defines the I_SYS_ACCESS symbol,
1910 and indicates whether a C program should include <sys/access.h>.
1912 i_sysdir (i_sysdir.U):
1913 This variable conditionally defines the I_SYS_DIR symbol, and indicates
1914 whether a C program should include <sys/dir.h>.
1916 i_sysfile (i_sysfile.U):
1917 This variable conditionally defines the I_SYS_FILE symbol, and indicates
1918 whether a C program should include <sys/file.h> to get R_OK and friends.
1920 i_sysfilio (i_sysioctl.U):
1921 This variable conditionally defines the I_SYS_FILIO symbol, which
1922 indicates to the C program that <sys/filio.h> exists and should
1923 be included in preference to <sys/ioctl.h>.
1926 This variable conditionally defines I_SYS_IN, which indicates
1927 to the C program that it should include <sys/in.h> instead of
1930 i_sysioctl (i_sysioctl.U):
1931 This variable conditionally defines the I_SYS_IOCTL symbol, which
1932 indicates to the C program that <sys/ioctl.h> exists and should
1935 i_sysmman (i_sysmman.U):
1936 This variable conditionally defines the I_SYS_MMAN symbol, and
1937 indicates whether a C program should include <sys/mman.h>.
1939 i_sysmount (i_sysmount.U):
1940 This variable conditionally defines the I_SYSMOUNT symbol,
1941 and indicates whether a C program should include <sys/mount.h>.
1943 i_sysndir (i_sysndir.U):
1944 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
1945 whether a C program should include <sys/ndir.h>.
1947 i_sysparam (i_sysparam.U):
1948 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
1949 whether a C program should include <sys/param.h>.
1951 i_sysresrc (i_sysresrc.U):
1952 This variable conditionally defines the I_SYS_RESOURCE symbol,
1953 and indicates whether a C program should include <sys/resource.h>.
1955 i_syssecrt (i_syssecrt.U):
1956 This variable conditionally defines the I_SYS_SECURITY symbol,
1957 and indicates whether a C program should include <sys/security.h>.
1959 i_sysselct (i_sysselct.U):
1960 This variable conditionally defines I_SYS_SELECT, which indicates
1961 to the C program that it should include <sys/select.h> in order to
1962 get the definition of struct timeval.
1964 i_syssockio (i_sysioctl.U):
1965 This variable conditionally defines I_SYS_SOCKIO to indicate to the
1966 C program that socket ioctl codes may be found in <sys/sockio.h>
1967 instead of <sys/ioctl.h>.
1969 i_sysstat (i_sysstat.U):
1970 This variable conditionally defines the I_SYS_STAT symbol,
1971 and indicates whether a C program should include <sys/stat.h>.
1973 i_sysstatvfs (i_sysstatvfs.U):
1974 This variable conditionally defines the I_SYSSTATVFS symbol,
1975 and indicates whether a C program should include <sys/statvfs.h>.
1977 i_systime (i_time.U):
1978 This variable conditionally defines I_SYS_TIME, which indicates
1979 to the C program that it should include <sys/time.h>.
1981 i_systimek (i_time.U):
1982 This variable conditionally defines I_SYS_TIME_KERNEL, which
1983 indicates to the C program that it should include <sys/time.h>
1984 with KERNEL defined.
1986 i_systimes (i_systimes.U):
1987 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
1988 whether a C program should include <sys/times.h>.
1990 i_systypes (i_systypes.U):
1991 This variable conditionally defines the I_SYS_TYPES symbol,
1992 and indicates whether a C program should include <sys/types.h>.
1994 i_sysuio (i_sysuio.U):
1995 This variable conditionally defines the I_SYSUIO symbol, and indicates
1996 whether a C program should include <sys/uio.h>.
1998 i_sysun (i_sysun.U):
1999 This variable conditionally defines I_SYS_UN, which indicates
2000 to the C program that it should include <sys/un.h> to get UNIX
2001 domain socket definitions.
2003 i_syswait (i_syswait.U):
2004 This variable conditionally defines I_SYS_WAIT, which indicates
2005 to the C program that it should include <sys/wait.h>.
2007 i_termio (i_termio.U):
2008 This variable conditionally defines the I_TERMIO symbol, which
2009 indicates to the C program that it should include <termio.h> rather
2012 i_termios (i_termio.U):
2013 This variable conditionally defines the I_TERMIOS symbol, which
2014 indicates to the C program that the POSIX <termios.h> file is
2018 This variable conditionally defines I_TIME, which indicates
2019 to the C program that it should include <time.h>.
2021 i_unistd (i_unistd.U):
2022 This variable conditionally defines the I_UNISTD symbol, and indicates
2023 whether a C program should include <unistd.h>.
2025 i_utime (i_utime.U):
2026 This variable conditionally defines the I_UTIME symbol, and indicates
2027 whether a C program should include <utime.h>.
2029 i_values (i_values.U):
2030 This variable conditionally defines the I_VALUES symbol, and indicates
2031 whether a C program may include <values.h> to get symbols like MAXLONG
2034 i_varargs (i_varhdr.U):
2035 This variable conditionally defines I_VARARGS, which indicates
2036 to the C program that it should include <varargs.h>.
2038 i_varhdr (i_varhdr.U):
2039 Contains the name of the header to be included to get va_dcl definition.
2040 Typically one of varargs.h or stdarg.h.
2042 i_vfork (i_vfork.U):
2043 This variable conditionally defines the I_VFORK symbol, and indicates
2044 whether a C program should include vfork.h.
2046 ignore_versioned_solibs (libs.U):
2047 This variable should be non-empty if non-versioned shared
2048 libraries (libfoo.so.x.y) are to be ignored (because they
2049 cannot be linked against).
2052 This variable must preceed the normal include path to get hte
2053 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2054 Value can be "" or "/bsd43" on mips.
2057 This variable is defined but not used by Configure.
2058 The value is a plain '' and is not useful.
2060 installarchlib (archlib.U):
2061 This variable is really the same as archlibexp but may differ on
2062 those systems using AFS. For extra portability, only this variable
2063 should be used in makefiles.
2066 This variable is the same as binexp unless AFS is running in which case
2067 the user is explicitely prompted for it. This variable should always
2068 be used in your makefiles for maximum portability.
2070 installman1dir (man1dir.U):
2071 This variable is really the same as man1direxp, unless you are using
2072 AFS in which case it points to the read/write location whereas
2073 man1direxp only points to the read-only access location. For extra
2074 portability, you should only use this variable within your makefiles.
2076 installman3dir (man3dir.U):
2077 This variable is really the same as man3direxp, unless you are using
2078 AFS in which case it points to the read/write location whereas
2079 man3direxp only points to the read-only access location. For extra
2080 portability, you should only use this variable within your makefiles.
2082 installprefix (installprefix.U):
2083 This variable holds the name of the directory below which
2084 "make install" will install the package. For most users, this
2085 is the same as prefix. However, it is useful for
2086 installing the software into a different (usually temporary)
2087 location after which it can be bundled up and moved somehow
2088 to the final location specified by prefix.
2090 installprefixexp (installprefix.U):
2091 This variable holds the full absolute path of installprefix
2092 with all ~-expansion done.
2094 installprivlib (privlib.U):
2095 This variable is really the same as privlibexp but may differ on
2096 those systems using AFS. For extra portability, only this variable
2097 should be used in makefiles.
2099 installscript (scriptdir.U):
2100 This variable is usually the same as scriptdirexp, unless you are on
2101 a system running AFS, in which case they may differ slightly. You
2102 should always use this variable within your makefiles for portability.
2104 installsitearch (sitearch.U):
2105 This variable is really the same as sitearchexp but may differ on
2106 those systems using AFS. For extra portability, only this variable
2107 should be used in makefiles.
2109 installsitelib (sitelib.U):
2110 This variable is really the same as sitelibexp but may differ on
2111 those systems using AFS. For extra portability, only this variable
2112 should be used in makefiles.
2114 installstyle (installstyle.U):
2115 This variable describes the "style" of the perl installation.
2116 This is intended to be useful for tools that need to
2117 manipulate entire perl distributions. Perl itself doesn't use
2118 this to find its libraries -- the library directories are
2119 stored directly in Config.pm. Currently, there are only two
2120 styles: "lib" and "lib/perl5". The default library locations
2121 (e.g. privlib, sitelib) are either $prefix/lib or
2122 $prefix/lib/perl5. The former is useful if $prefix is a
2123 directory dedicated to perl (e.g. /opt/perl), while the latter
2124 is useful if $prefix is shared by many packages, e.g. if
2126 This may later be extended to include other information, so
2127 be careful with pattern-matching on the results.
2128 For compatibility with perl5.005 and earlier, the default
2129 setting is based on whether or not $prefix contains the string
2132 installusrbinperl (instubperl.U):
2133 This variable tells whether Perl should be installed also as
2134 /usr/bin/perl in addition to
2137 installvendorlib (vendorlib.U):
2138 This variable is really the same as vendorlibexp but may differ on
2139 those systems using AFS. For extra portability, only this variable
2140 should be used in makefiles.
2142 intsize (intsize.U):
2143 This variable contains the value of the INTSIZE symbol, which
2144 indicates to the C program how many bytes there are in an int.
2146 known_extensions (Extensions.U):
2147 This variable holds a list of all XS extensions included in
2151 This variable is defined but not used by Configure.
2152 The value is a plain '' and is not useful.
2155 This variable contains a flag which will tell the C compiler and loader
2156 to produce a program running with a large memory model. It is up to
2157 the Makefile to use this.
2160 This variable indicates the program to be used to link
2161 libraries for dynamic loading. On some systems, it is 'ld'.
2162 On ELF systems, it should be $cc. Mostly, we'll try to respect
2163 the hint file setting.
2165 lddlflags (dlsrc.U):
2166 This variable contains any special flags that might need to be
2167 passed to $ld to create a shared library suitable for dynamic
2168 loading. It is up to the makefile to use it. For hpux, it
2169 should be '-b'. For sunos 4.1, it is empty.
2171 ldflags (ccflags.U):
2172 This variable contains any additional C loader flags desired by
2173 the user. It is up to the Makefile to use this.
2175 ldlibpthname (libperl.U):
2176 This variable holds the name of the shared library
2177 search path, often LD_LIBRARY_PATH. To get an empty
2178 string, the hints file must set this to 'none'.
2181 This variable is used internally by Configure to determine the
2182 full pathname (if any) of the less program. After Configure runs,
2183 the value is reset to a plain "less" and is not useful.
2186 This is an old synonym for _a.
2189 This variable contains the location of the C library.
2191 libperl (libperl.U):
2192 The perl executable is obtained by linking perlmain.c with
2193 libperl, any static extensions (usually just DynaLoader),
2194 and any other libraries needed on this system. libperl
2195 is usually libperl.a, but can also be libperl.so.xxx if
2196 the user wishes to build a perl executable with a shared
2200 This variable holds the general path (space-separated) used to find
2201 libraries. It is intended to be used by other units.
2204 This variable holds the additional libraries we want to use.
2205 It is up to the Makefile to deal with it.
2207 libswanted (Myinit.U):
2208 This variable holds a list of all the libraries we want to
2209 search. The order is chosen to pick up the c library
2210 ahead of ucb or bsd libraries for SVR4.
2213 This variable is defined but not used by Configure.
2214 The value is a plain '' and is not useful.
2217 This variable is defined but not used by Configure.
2218 The value is a plain '' and is not useful.
2220 lkflags (ccflags.U):
2221 This variable contains any additional C partial linker flags desired by
2222 the user. It is up to the Makefile to use this.
2225 This variable is used internally by Configure to determine the
2226 full pathname (if any) of the ln program. After Configure runs,
2227 the value is reset to a plain "ln" and is not useful.
2230 This variable holds the name of the command to make
2231 symbolic links (if they are supported). It can be used
2232 in the Makefile. It is either 'ln -s' or 'ln'
2234 locincpth (ccflags.U):
2235 This variable contains a list of additional directories to be
2236 searched by the compiler. The appropriate '-I' directives will
2237 be added to ccflags. This is intended to simplify setting
2238 local directories from the Configure command line.
2239 It's not much, but it parallels the loclibpth stuff in libpth.U.
2241 loclibpth (libpth.U):
2242 This variable holds the paths (space-separated) used to find local
2243 libraries. It is prepended to libpth, and is intended to be easily
2244 set from the command line.
2246 longdblsize (d_longdbl.U):
2247 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2248 indicates to the C program how many bytes there are in a long double,
2249 if this system supports long doubles.
2251 longlongsize (d_longlong.U):
2252 This variable contains the value of the LONGLONGSIZE symbol, which
2253 indicates to the C program how many bytes there are in a long long,
2254 if this system supports long long.
2256 longsize (intsize.U):
2257 This variable contains the value of the LONGSIZE symbol, which
2258 indicates to the C program how many bytes there are in a long.
2261 This variable is defined but not used by Configure.
2262 The value is a plain '' and is not useful.
2265 This variable is defined but not used by Configure.
2266 The value is a plain '' and is not useful.
2269 This variable is used internally by Configure to determine the
2270 full pathname (if any) of the ls program. After Configure runs,
2271 the value is reset to a plain "ls" and is not useful.
2273 lseeksize (lseektype.U):
2274 This variable defines lseektype to be something like off_t, long,
2275 or whatever type is used to declare lseek offset's type in the
2276 kernel (which also appears to be lseek's return type).
2278 lseektype (lseektype.U):
2279 This variable defines lseektype to be something like off_t, long,
2280 or whatever type is used to declare lseek offset's type in the
2281 kernel (which also appears to be lseek's return type).
2284 This variable is defined but not used by Configure.
2285 The value is a plain '' and is not useful.
2288 This variable is defined but not used by Configure.
2289 The value is a plain '' and is not useful.
2292 This variable is used internally by Configure to determine the
2293 full pathname (if any) of the make program. After Configure runs,
2294 the value is reset to a plain "make" and is not useful.
2296 make_set_make (make.U):
2297 Some versions of 'make' set the variable MAKE. Others do not.
2298 This variable contains the string to be included in Makefile.SH
2299 so that MAKE is set if needed, and not if not needed.
2300 Possible values are:
2301 make_set_make='#' # If your make program handles this for you,
2302 make_set_make="MAKE=$make" # if it doesn't.
2303 I used a comment character so that we can distinguish a
2304 'set' value (from a previous config.sh or Configure '-D' option)
2305 from an uncomputed value.
2307 mallocobj (mallocsrc.U):
2308 This variable contains the name of the malloc.o that this package
2309 generates, if that malloc.o is preferred over the system malloc.
2310 Otherwise the value is null. This variable is intended for generating
2311 Makefiles. See mallocsrc.
2313 mallocsrc (mallocsrc.U):
2314 This variable contains the name of the malloc.c that comes with
2315 the package, if that malloc.c is preferred over the system malloc.
2316 Otherwise the value is null. This variable is intended for generating
2319 malloctype (mallocsrc.U):
2320 This variable contains the kind of ptr returned by malloc and realloc.
2322 man1dir (man1dir.U):
2323 This variable contains the name of the directory in which manual
2324 source pages are to be put. It is the responsibility of the
2325 Makefile.SH to get the value of this into the proper command.
2326 You must be prepared to do the ~name expansion yourself.
2328 man1direxp (man1dir.U):
2329 This variable is the same as the man1dir variable, but is filename
2330 expanded at configuration time, for convenient use in makefiles.
2332 man1ext (man1dir.U):
2333 This variable contains the extension that the manual page should
2334 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2337 man3dir (man3dir.U):
2338 This variable contains the name of the directory in which manual
2339 source pages are to be put. It is the responsibility of the
2340 Makefile.SH to get the value of this into the proper command.
2341 You must be prepared to do the ~name expansion yourself.
2343 man3direxp (man3dir.U):
2344 This variable is the same as the man3dir variable, but is filename
2345 expanded at configuration time, for convenient use in makefiles.
2347 man3ext (man3dir.U):
2348 This variable contains the extension that the manual page should
2349 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2353 This variable is used internally by Configure to determine the
2354 full pathname (if any) of the Mcc program. After Configure runs,
2355 the value is reset to a plain "Mcc" and is not useful.
2358 This variable contains a flag which will tell the C compiler and loader
2359 to produce a program running with a medium memory model. If the
2360 medium model is not supported, contains the flag to produce large
2361 model programs. It is up to the Makefile to use this.
2363 mips_type (usrinc.U):
2364 This variable holds the environment type for the mips system.
2365 Possible values are "BSD 4.3" and "System V".
2368 This variable is used internally by Configure to determine the
2369 full pathname (if any) of the mkdir program. After Configure runs,
2370 the value is reset to a plain "mkdir" and is not useful.
2372 mmaptype (d_mmap.U):
2373 This symbol contains the type of pointer returned by mmap()
2374 (and simultaneously the type of the first argument).
2375 It can be 'void *' or 'caddr_t'.
2378 This variable contains the list of memory models supported by this
2379 system. Possible component values are none, split, unsplit, small,
2380 medium, large, and huge. The component values are space separated.
2382 modetype (modetype.U):
2383 This variable defines modetype to be something like mode_t,
2384 int, unsigned short, or whatever type is used to declare file
2385 modes for system calls.
2388 This variable is used internally by Configure to determine the
2389 full pathname (if any) of the more program. After Configure runs,
2390 the value is reset to a plain "more" and is not useful.
2392 multiarch (multiarch.U):
2393 This variable conditionally defines the MULTIARCH symbol
2394 which signifies the presence of multiplatform files.
2395 This is normally set by hints files.
2398 This variable is defined but not used by Configure.
2399 The value is a plain '' and is not useful.
2401 myarchname (archname.U):
2402 This variable holds the architecture name computed by Configure in
2403 a previous run. It is not intended to be perused by any user and
2404 should never be set in a hint file.
2406 mydomain (myhostname.U):
2407 This variable contains the eventual value of the MYDOMAIN symbol,
2408 which is the domain of the host the program is going to run on.
2409 The domain must be appended to myhostname to form a complete host name.
2410 The dot comes with mydomain, and need not be supplied by the program.
2412 myhostname (myhostname.U):
2413 This variable contains the eventual value of the MYHOSTNAME symbol,
2414 which is the name of the host the program is going to run on.
2415 The domain is not kept with hostname, but must be gotten from mydomain.
2416 The dot comes with mydomain, and need not be supplied by the program.
2418 myuname (Oldconfig.U):
2419 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2420 pseudo variables assignments in the output are stripped, thank you. The
2421 whole thing is then lower-cased.
2424 This variable contains the '-n' flag if that is what causes the echo
2425 command to suppress newline. Otherwise it is null. Correct usage is
2426 $echo $n "prompt for a question: $c".
2428 netdb_hlen_type (netdbtype.U):
2429 This variable holds the type used for the 2nd argument to
2430 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2431 This is only useful if you have gethostbyaddr(), naturally.
2433 netdb_host_type (netdbtype.U):
2434 This variable holds the type used for the 1st argument to
2435 gethostbyaddr(). Usually, this is char * or void *, possibly
2436 with or without a const prefix.
2437 This is only useful if you have gethostbyaddr(), naturally.
2439 netdb_name_type (netdbtype.U):
2440 This variable holds the type used for the argument to
2441 gethostbyname(). Usually, this is char * or const char *.
2442 This is only useful if you have gethostbyname(), naturally.
2444 netdb_net_type (netdbtype.U):
2445 This variable holds the type used for the 1st argument to
2446 getnetbyaddr(). Usually, this is int or long.
2447 This is only useful if you have getnetbyaddr(), naturally.
2450 This variable is used internally by Configure to determine the
2451 full pathname (if any) of the nm program. After Configure runs,
2452 the value is reset to a plain "nm" and is not useful.
2455 This variable holds the options that may be necessary for nm.
2457 nm_so_opt (usenm.U):
2458 This variable holds the options that may be necessary for nm
2459 to work on a shared library but that can not be used on an
2460 archive library. Currently, this is only used by Linux, where
2461 nm --dynamic is *required* to get symbols from an ELF library which
2462 has been stripped, but nm --dynamic is *fatal* on an archive library.
2463 Maybe Linux should just always set usenm=false.
2465 nonxs_ext (Extensions.U):
2466 This variable holds a list of all non-xs extensions included
2467 in the package. All of them will be built.
2470 This variable is used internally by Configure to determine the
2471 full pathname (if any) of the nroff program. After Configure runs,
2472 the value is reset to a plain "nroff" and is not useful.
2474 o_nonblock (nblock_io.U):
2475 This variable bears the symbol value to be used during open() or fcntl()
2476 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2477 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2478 but that is only supported by some devices.
2481 This is an old synonym for _o.
2483 old_pthread_create_joinable (d_pthrattrj.U):
2484 This variable defines the constant to use for creating joinable
2485 (aka undetached) pthreads. Unused if pthread.h defines
2486 PTHREAD_CREATE_JOINABLE. If used, possible values are
2487 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2489 optimize (ccflags.U):
2490 This variable contains any optimizer/debugger flag that should be used.
2491 It is up to the Makefile to use it.
2493 orderlib (orderlib.U):
2494 This variable is "true" if the components of libraries must be ordered
2495 (with `lorder $* | tsort`) before placing them in an archive. Set to
2496 "false" if ranlib or ar can generate random libraries.
2498 osname (Oldconfig.U):
2499 This variable contains the operating system name (e.g. sunos,
2500 solaris, hpux, etc.). It can be useful later on for setting
2501 defaults. Any spaces are replaced with underscores. It is set
2502 to a null string if we can't figure it out.
2504 osvers (Oldconfig.U):
2505 This variable contains the operating system version (e.g.
2506 4.1.3, 5.2, etc.). It is primarily used for helping select
2507 an appropriate hints file, but might be useful elsewhere for
2508 setting defaults. It is set to '' if we can't figure it out.
2509 We try to be flexible about how much of the version number
2510 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2511 same for this package, hints files might just be os_4.0 or
2512 os_4.1, etc., not keeping separate files for each little release.
2514 package (package.U):
2515 This variable contains the name of the package being constructed.
2516 It is primarily intended for the use of later Configure units.
2519 This variable contains the name of the preferred pager on the system.
2520 Usual values are (the full pathnames of) more, less, pg, or cat.
2523 This variable contains a command that produces the text of the
2524 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2525 "ypcat passwd" when NIS is used.
2527 patchlevel (patchlevel.U):
2528 The patchlevel level of this package.
2529 The value of patchlevel comes from the patchlevel.h file.
2532 This is an old synonym for p_ in Head.U, the character
2533 used to separate elements in the command shell search PATH.
2536 This variable is defined but not used by Configure.
2537 The value is a plain '' and is not useful.
2539 perladmin (perladmin.U):
2540 Electronic mail address of the perl5 administrator.
2542 perlpath (perlpath.U):
2543 This variable contains the eventual value of the PERLPATH symbol,
2544 which contains the name of the perl interpreter to be used in
2545 shell scripts and in the "eval 'exec'" idiom.
2548 This variable is used internally by Configure to determine the
2549 full pathname (if any) of the pg program. After Configure runs,
2550 the value is reset to a plain "pg" and is not useful.
2552 phostname (myhostname.U):
2553 This variable contains the eventual value of the PHOSTNAME symbol,
2554 which is a command that can be fed to popen() to get the host name.
2555 The program should probably not presume that the domain is or isn't
2558 pidtype (pidtype.U):
2559 This variable defines PIDTYPE to be something like pid_t, int,
2560 ushort, or whatever type is used to declare process ids in the kernel.
2563 Holds the private path used by Configure to find out the libraries.
2564 Its value is prepend to libpth. This variable takes care of special
2565 machines, like the mips. Usually, it should be empty.
2567 pm_apiversion (xs_apiversion.U):
2568 This variable contains the version of the oldest perl
2569 compatible with the present perl. (That is, pure perl modules
2570 written for $pm_apiversion will still work for the current
2571 version). perl.c:incpush() and lib/lib.pm will automatically
2572 search in $sitelib for older directories across major versions
2573 back to pm_apiversion. This is only useful if you have a perl
2574 library directory tree structured like the default one. The
2575 versioned site_perl library was introduced in 5.005, so that's
2576 the default setting for this variable. It's hard to imagine
2577 it changing before Perl6. It is included here for symmetry
2578 with xs_apiveprsion -- the searching algorithms will
2579 (presumably) be similar.
2580 See the INSTALL file for how this works.
2583 This variable is defined but not used by Configure.
2584 The value is a plain '' and is not useful.
2587 This variable is defined but not used by Configure.
2588 The value is a plain '' and is not useful.
2591 This variable holds the name of the directory below which the
2592 user will install the package. Usually, this is /usr/local, and
2593 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2594 man pages in /usr/local/man, etc. It is only used to set defaults
2595 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2597 prefixexp (prefix.U):
2598 This variable holds the full absolute path of the directory below
2599 which the user will install the package. Derived from prefix.
2601 privlib (privlib.U):
2602 This variable contains the eventual value of the PRIVLIB symbol,
2603 which is the name of the private library for this package. It may
2604 have a ~ on the front. It is up to the makefile to eventually create
2605 this directory while performing installation (with ~ substitution).
2607 privlibexp (privlib.U):
2608 This variable is the ~name expanded version of privlib, so that you
2609 may use it directly in Makefiles or shell scripts.
2611 prototype (prototype.U):
2612 This variable holds the eventual value of CAN_PROTOTYPE, which
2613 indicates the C compiler can handle funciton prototypes.
2615 ptrsize (ptrsize.U):
2616 This variable contains the value of the PTRSIZE symbol, which
2617 indicates to the C program how many bytes there are in a pointer.
2619 randbits (randfunc.U):
2620 Indicates how many bits are produced by the function used to
2621 generate normalized random numbers.
2623 randfunc (randfunc.U):
2624 Indicates the name of the random number function to use.
2625 Values include drand48, random, and rand. In C programs,
2626 the 'Drand01' macro is defined to generate uniformly distributed
2627 random numbers over the range [0., 1.[ (see drand01 and nrand).
2629 randseedtype (randfunc.U):
2630 Indicates the type of the argument of the seedfunc.
2632 ranlib (orderlib.U):
2633 This variable is set to the pathname of the ranlib program, if it is
2634 needed to generate random libraries. Set to ":" if ar can generate
2635 random libraries or if random libraries are not supported
2637 rd_nodata (nblock_io.U):
2638 This variable holds the return code from read() when no data is
2639 present. It should be -1, but some systems return 0 when O_NDELAY is
2640 used, which is a shame because you cannot make the difference between
2641 no data and an EOF.. Sigh!
2644 This variable is used internally by Configure to determine the
2645 full pathname (if any) of the rm program. After Configure runs,
2646 the value is reset to a plain "rm" and is not useful.
2649 This variable is defined but not used by Configure.
2650 The value is a plain '' and is not useful.
2653 This variable contains 'true' or 'false' depending whether the
2654 nm extraction should be performed or not, according to the value
2655 of usenm and the flags on the Configure command line.
2657 sched_yield (d_pthread_y.U):
2658 This variable defines the way to yield the execution
2659 of the current thread.
2661 scriptdir (scriptdir.U):
2662 This variable holds the name of the directory in which the user wants
2663 to put publicly scripts for the package in question. It is either
2664 the same directory as for binaries, or a special one that can be
2665 mounted across different architectures, like /usr/share. Programs
2666 must be prepared to deal with ~name expansion.
2668 scriptdirexp (scriptdir.U):
2669 This variable is the same as scriptdir, but is filename expanded
2670 at configuration time, for programs not wanting to bother with it.
2673 This variable is used internally by Configure to determine the
2674 full pathname (if any) of the sed program. After Configure runs,
2675 the value is reset to a plain "sed" and is not useful.
2677 seedfunc (randfunc.U):
2678 Indicates the random number generating seed function.
2679 Values include srand48, srandom, and srand.
2681 selectminbits (selectminbits.U):
2682 This variable holds the minimum number of bits operated by select.
2683 That is, if you do select(n, ...), how many bits at least will be
2684 cleared in the masks if some activity is detected. Usually this
2685 is either n or 32*ceil(n/32), especially many little-endians do
2686 the latter. This is only useful if you have select(), naturally.
2688 selecttype (selecttype.U):
2689 This variable holds the type used for the 2nd, 3rd, and 4th
2690 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
2691 is defined, and 'int *' otherwise. This is only useful if you
2692 have select(), naturally.
2695 This variable is defined but not used by Configure.
2696 The value is a plain '' and is not useful.
2699 This variable contains the full pathname of the shell used
2700 on this system to execute Bourne shell scripts. Usually, this will be
2701 /bin/sh, though it's possible that some systems will have /bin/ksh,
2702 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
2704 This unit comes before Options.U, so you can't set sh with a '-D'
2705 option, though you can override this (and startsh)
2706 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
2709 This variable is defined but not used by Configure.
2710 The value is a plain '' and is not useful.
2712 sharpbang (spitshell.U):
2713 This variable contains the string #! if this system supports that
2716 shmattype (d_shmat.U):
2717 This symbol contains the type of pointer returned by shmat().
2718 It can be 'void *' or 'char *'.
2720 shortsize (intsize.U):
2721 This variable contains the value of the SHORTSIZE symbol which
2722 indicates to the C program how many bytes there are in a short.
2724 shrpenv (libperl.U):
2725 If the user builds a shared libperl.so, then we need to tell the
2726 'perl' executable where it will be able to find the installed libperl.so.
2727 One way to do this on some systems is to set the environment variable
2728 LD_RUN_PATH to the directory that will be the final location of the
2729 shared libperl.so. The makefile can use this with something like
2730 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
2732 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
2735 See the main perl Makefile.SH for actual working usage.
2736 Alternatively, we might be able to use a command line option such
2737 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
2738 $archlibexp/CORE (Linux).
2740 shsharp (spitshell.U):
2741 This variable tells further Configure units whether your sh can
2744 sig_count (sig_name.U):
2745 This variable holds a number larger than the largest valid
2746 signal number. This is usually the same as the NSIG macro.
2748 sig_name (sig_name.U):
2749 This variable holds the signal names, space separated. The leading
2750 SIG in signal name is removed. A ZERO is prepended to the
2751 list. This is currently not used.
2753 sig_name_init (sig_name.U):
2754 This variable holds the signal names, enclosed in double quotes and
2755 separated by commas, suitable for use in the SIG_NAME definition
2756 below. A "ZERO" is prepended to the list, and the list is
2757 terminated with a plain 0. The leading SIG in signal names
2758 is removed. See sig_num.
2760 sig_num (sig_name.U):
2761 This variable holds the signal numbers, space separated. A ZERO is
2762 prepended to the list (corresponding to the fake SIGZERO), and
2763 the list is terminated with a 0. Those numbers correspond to
2764 the value of the signal listed in the same place within the
2767 sig_num_init (sig_name.U):
2768 This variable holds the signal numbers, enclosed in double quotes and
2769 separated by commas, suitable for use in the SIG_NUM definition
2770 below. A "ZERO" is prepended to the list, and the list is
2771 terminated with a plain 0.
2773 signal_t (d_voidsig.U):
2774 This variable holds the type of the signal handler (void or int).
2776 sitearch (sitearch.U):
2777 This variable contains the eventual value of the SITEARCH symbol,
2778 which is the name of the private library for this package. It may
2779 have a ~ on the front. It is up to the makefile to eventually create
2780 this directory while performing installation (with ~ substitution).
2782 sitearchexp (sitearch.U):
2783 This variable is the ~name expanded version of sitearch, so that you
2784 may use it directly in Makefiles or shell scripts.
2786 sitelib (sitelib.U):
2787 This variable contains the eventual value of the SITELIB symbol,
2788 which is the name of the private library for this package. It may
2789 have a ~ on the front. It is up to the makefile to eventually create
2790 this directory while performing installation (with ~ substitution).
2792 sitelibexp (sitelib.U):
2793 This variable is the ~name expanded version of sitelib, so that you
2794 may use it directly in Makefiles or shell scripts.
2796 siteprefix (siteprefix.U):
2797 This variable holds the full absolute path of the directory below
2798 which the user will install add-on packages.
2800 siteprefixexp (siteprefix.U):
2801 This variable holds the full absolute path of the directory below
2802 which the user will install add-on packages. Derived from siteprefix.
2804 sizetype (sizetype.U):
2805 This variable defines sizetype to be something like size_t,
2806 unsigned long, or whatever type is used to declare length
2807 parameters for string functions.
2810 This variable is defined but not used by Configure.
2811 The value is a plain '' and is not useful.
2814 This variable is defined but not used by Configure.
2815 The value is a plain '' and is not useful.
2818 This variable contains a flag which will tell the C compiler and loader
2819 to produce a program running with a small memory model. It is up to
2820 the Makefile to use this.
2823 This variable holds the extension used to identify shared libraries
2824 (also known as shared objects) on the system. Usually set to 'so'.
2826 sockethdr (d_socket.U):
2827 This variable has any cpp '-I' flags needed for socket support.
2829 socketlib (d_socket.U):
2830 This variable has the names of any libraries needed for socket support.
2833 This variable is used internally by Configure to determine the
2834 full pathname (if any) of the sort program. After Configure runs,
2835 the value is reset to a plain "sort" and is not useful.
2837 spackage (package.U):
2838 This variable contains the name of the package being constructed,
2839 with the first letter uppercased, i.e. suitable for starting
2842 spitshell (spitshell.U):
2843 This variable contains the command necessary to spit out a runnable
2844 shell on this system. It is either cat or a grep '-v' for # comments.
2847 This variable contains a flag which will tell the C compiler and loader
2848 to produce a program that will run in separate I and D space, for those
2849 machines that support separation of instruction and data space. It is
2850 up to the Makefile to use this.
2852 sPRId64 (quadfio.U):
2853 This variable, if defined, contains the string used by stdio to
2854 format 64-bit decimal numbers (format 'd') for output.
2856 sPRIeldbl (longdblfio.U):
2857 This variable, if defined, contains the string used by stdio to
2858 format long doubles (format 'e') for output.
2860 sPRIEldbl (longdblfio.U):
2861 This variable, if defined, contains the string used by stdio to
2862 format long doubles (format 'E') for output.
2864 sPRIfldbl (longdblfio.U):
2865 This variable, if defined, contains the string used by stdio to
2866 format long doubles (format 'f') for output.
2868 sPRIFldbl (longdblfio.U):
2869 This variable, if defined, contains the string used by stdio to
2870 format long doubles (format 'F') for output.
2872 sPRIgldbl (longdblfio.U):
2873 This variable, if defined, contains the string used by stdio to
2874 format long doubles (format 'g') for output.
2876 sPRIGldbl (longdblfio.U):
2877 This variable, if defined, contains the string used by stdio to
2878 format long doubles (format 'G') for output.
2880 sPRIi64 (quadfio.U):
2881 This variable, if defined, contains the string used by stdio to
2882 format 64-bit decimal numbers (format 'i') for output.
2884 sPRIo64 (quadfio.U):
2885 This variable, if defined, contains the string used by stdio to
2886 format 64-bit octal numbers (format 'o') for output.
2888 sPRIu64 (quadfio.U):
2889 This variable, if defined, contains the string used by stdio to
2890 format 64-bit unsigned decimal numbers (format 'u') for output.
2892 sPRIx64 (quadfio.U):
2893 This variable, if defined, contains the string used by stdio to
2894 format 64-bit hexadecimal numbers (format 'x') for output.
2896 sPRIX64 (quadfio.U):
2897 This variable, if defined, contains the string used by stdio to
2898 format 64-bit hExADECimAl numbers (format 'X') for output.
2901 This variable holds the path to the package source. It is up to
2902 the Makefile to use this variable and set VPATH accordingly to
2903 find the sources remotely.
2905 ssizetype (ssizetype.U):
2906 This variable defines ssizetype to be something like ssize_t,
2907 long or int. It is used by functions that return a count
2908 of bytes or an error condition. It must be a signed type.
2909 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
2911 startperl (startperl.U):
2912 This variable contains the string to put on the front of a perl
2913 script to make sure (hopefully) that it runs with perl and not some
2914 shell. Of course, that leading line must be followed by the classical
2916 eval 'exec perl -S $0 ${1+"$@"}'
2917 if $running_under_some_shell;
2918 to guarantee perl startup should the shell execute the script. Note
2919 that this magic incatation is not understood by csh.
2921 startsh (startsh.U):
2922 This variable contains the string to put on the front of a shell
2923 script to make sure (hopefully) that it runs with sh and not some
2926 static_ext (Extensions.U):
2927 This variable holds a list of XS extension files we want to
2928 link statically into the package. It is used by Makefile.
2930 stdchar (stdchar.U):
2931 This variable conditionally defines STDCHAR to be the type of char
2932 used in stdio.h. It has the values "unsigned char" or "char".
2934 stdio_base (d_stdstdio.U):
2935 This variable defines how, given a FILE pointer, fp, to access the
2936 _base field (or equivalent) of stdio.h's FILE structure. This will
2937 be used to define the macro FILE_base(fp).
2939 stdio_bufsiz (d_stdstdio.U):
2940 This variable defines how, given a FILE pointer, fp, to determine
2941 the number of bytes store in the I/O buffer pointer to by the
2942 _base field (or equivalent) of stdio.h's FILE structure. This will
2943 be used to define the macro FILE_bufsiz(fp).
2945 stdio_cnt (d_stdstdio.U):
2946 This variable defines how, given a FILE pointer, fp, to access the
2947 _cnt field (or equivalent) of stdio.h's FILE structure. This will
2948 be used to define the macro FILE_cnt(fp).
2950 stdio_filbuf (d_stdstdio.U):
2951 This variable defines how, given a FILE pointer, fp, to tell
2952 stdio to refill it's internal buffers (?). This will
2953 be used to define the macro FILE_filbuf(fp).
2955 stdio_ptr (d_stdstdio.U):
2956 This variable defines how, given a FILE pointer, fp, to access the
2957 _ptr field (or equivalent) of stdio.h's FILE structure. This will
2958 be used to define the macro FILE_ptr(fp).
2960 stdio_stream_array (stdio_streams.U):
2961 This variable tells the name of the array holding the stdio streams.
2962 Usual values include _iob, __iob, and __sF.
2964 strings (i_string.U):
2965 This variable holds the full path of the string header that will be
2966 used. Typically /usr/include/string.h or /usr/include/strings.h.
2969 This variable is defined but not used by Configure.
2970 The value is a plain '' and is not useful.
2972 subversion (patchlevel.U):
2973 The subversion level of this package.
2974 The value of subversion comes from the patchlevel.h file.
2975 This is unique to perl.
2978 This variable holds the place where the manual is located on this
2979 system. It is not the place where the user wants to put his manual
2980 pages. Rather it is the place where Configure may look to find manual
2981 for unix commands (section 1 of the manual usually). See mansrc.
2984 This variable is defined but not used by Configure.
2985 The value is a plain '' and is not useful.
2988 This variable is defined but not used by Configure.
2989 The value is a plain '' and is not useful.
2992 This variable is defined but not used by Configure.
2993 The value is a plain '' and is not useful.
2996 This variable is defined but not used by Configure.
2997 The value is a plain '' and is not useful.
3000 This variable is used internally by Configure to determine the
3001 full pathname (if any) of the test program. After Configure runs,
3002 the value is reset to a plain "test" and is not useful.
3004 timeincl (i_time.U):
3005 This variable holds the full path of the included time header(s).
3007 timetype (d_time.U):
3008 This variable holds the type returned by time(). It can be long,
3009 or time_t on BSD sites (in which case <sys/types.h> should be
3010 included). Anyway, the type Time_t should be used.
3013 This variable is used internally by Configure to determine the
3014 full pathname (if any) of the touch program. After Configure runs,
3015 the value is reset to a plain "touch" and is not useful.
3018 This variable is used internally by Configure to determine the
3019 full pathname (if any) of the tr program. After Configure runs,
3020 the value is reset to a plain "tr" and is not useful.
3023 This variable contains the value to be passed to the tr(1)
3024 command to transliterate a newline. Typical values are
3025 '\012' and '\n'. This is needed for EBCDIC systems where
3026 newline is not necessarily '\012'.
3029 This variable is defined but not used by Configure.
3030 The value is a plain '' and is not useful.
3032 uidsign (uidsign.U):
3033 This variable contains the signedness of a uidtype.
3034 1 for unsigned, -1 for signed.
3036 uidtype (uidtype.U):
3037 This variable defines Uid_t to be something like uid_t, int,
3038 ushort, or whatever type is used to declare user ids in the kernel.
3041 This variable is used internally by Configure to determine the
3042 full pathname (if any) of the uname program. After Configure runs,
3043 the value is reset to a plain "uname" and is not useful.
3046 This variable is used internally by Configure to determine the
3047 full pathname (if any) of the uniq program. After Configure runs,
3048 the value is reset to a plain "uniq" and is not useful.
3050 use64bits (use64bits.U):
3051 This variable conditionally defines the USE_64_BITS symbol,
3052 and indicates that explicit 64-bit interfaces should be used
3056 This variable indicates if the the system supports dynamic
3057 loading of some sort. See also dlsrc and dlobj.
3059 uselargefiles (uselfs.U):
3060 This variable conditionally defines the USE_LARGE_FILES symbol,
3061 and indicates that large file interfaces should be used when
3062 available. The use64bits symbol will also be turned on if necessary.
3064 uselongdouble (uselongdbl.U):
3065 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3066 and indicates that long doubles should be used when available.
3068 usemorebits (usemorebits.U):
3069 This variable conditionally defines the USE_MORE_BITS symbol,
3070 and indicates that explicit 64-bit interfaces and long doubles
3071 should be used when available.
3073 usemultiplicity (usemultiplicity.U):
3074 This variable conditionally defines the MULTIPLICITY symbol,
3075 and indicates that Perl should be built to use multiplicity.
3077 usemymalloc (mallocsrc.U):
3078 This variable contains y if the malloc that comes with this package
3079 is desired over the system's version of malloc. People often include
3080 special versions of malloc for effiency, but such versions are often
3081 less portable. See also mallocsrc and mallocobj.
3082 If this is 'y', then -lmalloc is removed from $libs.
3085 This variable contains 'true' or 'false' depending whether the
3086 nm extraction is wanted or not.
3088 useopcode (Extensions.U):
3089 This variable holds either 'true' or 'false' to indicate
3090 whether the Opcode extension should be used. The sole
3091 use for this currently is to allow an easy mechanism
3092 for users to skip the Opcode extension from the Configure
3095 useperlio (useperlio.U):
3096 This variable conditionally defines the USE_PERLIO symbol,
3097 and indicates that the PerlIO abstraction should be
3100 useposix (Extensions.U):
3101 This variable holds either 'true' or 'false' to indicate
3102 whether the POSIX extension should be used. The sole
3103 use for this currently is to allow an easy mechanism
3104 for hints files to indicate that POSIX will not compile
3105 on a particular system.
3108 This variable is set to true when the user agrees to use sfio.
3109 It is set to false when sfio is not available or when the user
3110 explicitely requests not to use sfio. It is here primarily so
3111 that command-line settings can override the auto-detection of
3112 d_sfio without running into a "WHOA THERE".
3114 useshrplib (libperl.U):
3115 This variable is set to 'yes' if the user wishes
3116 to build a shared libperl, and 'no' otherwise.
3118 usesocks (usesocks.U):
3119 This variable conditionally defines the USE_SOCKS symbol,
3120 and indicates that Perl should be built to use SOCKS.
3122 usethreads (usethreads.U):
3123 This variable conditionally defines the USE_THREADS symbol,
3124 and indicates that Perl should be built to use threads.
3126 usevendorprefix (vendorprefix.U):
3127 This variable tells whether the vendorprefix
3128 and consequently other vendor* paths are in use.
3130 usevfork (d_vfork.U):
3131 This variable is set to true when the user accepts to use vfork.
3132 It is set to false when no vfork is available or when the user
3133 explicitely requests not to use vfork.
3136 This variable holds the path of the include files, which is
3137 usually /usr/include. It is mainly used by other Configure units.
3140 This variable is defined but not used by Configure.
3141 The value is a plain '' and is not useful.
3143 vendorlib (vendorlib.U):
3144 This variable contains the eventual value of the VENDORLIB symbol,
3145 which is the name of the private library for this package. It may
3146 have a ~ on the front. It is up to the makefile to eventually create
3147 this directory while performing installation (with ~ substitution).
3148 Vendors who distribute perl binaries may place their own
3149 extensions and modules in this directory.
3151 vendorlibexp (vendorlib.U):
3152 This variable is the ~name expanded version of vendorlib, so that you
3153 may use it directly in Makefiles or shell scripts.
3155 vendorprefix (vendorprefix.U):
3156 This variable holds the full absolute path of the directory below
3157 which the vendor will install add-on packages.
3159 vendorprefixexp (vendorprefix.U):
3160 This variable holds the full absolute path of the directory below
3161 which the vendor will install add-on packages. Derived from vendorprefix.
3163 version (patchlevel.U):
3164 The full version number of this package. This combines
3165 baserev, patchlevel, and subversion to get the full
3166 version number, including any possible subversions. Care
3167 is taken to use the C locale in order to get something
3168 like 5.004 instead of 5,004. This is unique to perl.
3171 This variable is defined but not used by Configure.
3172 The value is a plain '' and is not useful.
3174 voidflags (voidflags.U):
3175 This variable contains the eventual value of the VOIDFLAGS symbol,
3176 which indicates how much support of the void type is given by this
3177 compiler. See VOIDFLAGS for more info.
3180 This variable holds extra path (space-separated) used to find
3181 libraries on this platform, for example CPU-specific libraries
3182 (on multi-CPU platforms) may be listed here.
3184 xs_apiversion (xs_apiversion.U):
3185 This variable contains the version of the oldest perl binary
3186 compatible with the present perl. perl.c:incpush() and
3187 lib/lib.pm will automatically search in $sitearch for older
3188 directories across major versions back to xs_apiversion.
3189 This is only useful if you have a perl library directory tree
3190 structured like the default one.
3191 See INSTALL for how this works.
3192 The versioned site_perl directory was introduced in 5.005,
3193 so that is the lowest possible value.
3194 Since this can depend on compile time options (such as
3195 bincompat) it is set by Configure. Other non-default sources
3196 of potential incompatibility, such as multiplicity, threads,
3197 debugging, 64bits, sfio, etc., are not checked for currently,
3198 though in principle we could go snooping around in old
3202 This variable is defined but not used by Configure.
3203 The value is a plain '' and is not useful.
3206 This variable is used internally by Configure to determine the
3207 full pathname (if any) of the zip program. After Configure runs,
3208 the value is reset to a plain "zip" and is not useful.