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 This is a number which identifies the lowest version of perl
42 to have an API (for XS extensions) compatible with the present
43 version. For example, for 5.005_01, the apiversion should be
44 5.005, since 5.005_01 should be binary compatible with 5.005.
45 This should probably be incremented manually somehow, perhaps
46 from patchlevel.h. For now, we'll guess maintenance subversions
47 will retain binary compatibility.
50 This variable is be used internally by Configure to determine the
51 full pathname (if any) of the ar program. After Configure runs,
52 the value is reset to a plain "ar" and is not useful.
55 This variable holds the name of the directory in which the user wants
56 to put architecture-dependent public library files for $package.
57 It is most often a local directory such as /usr/local/lib.
58 Programs using this variable must be prepared to deal
59 with filename expansion.
61 archlibexp (archlib.U):
62 This variable is the same as the archlib variable, but is
63 filename expanded at configuration time, for convenient use.
65 archname64 (use64bits.U):
66 This variable is used for the 64-bitness part of $archname.
68 archname (archname.U):
69 This variable is a short name to characterize the current
70 architecture. It is used mainly to construct the default archlib.
73 This variable defines any additional objects that must be linked
74 in with the program on this architecture. On unix, it is usually
75 empty. It is typically used to include emulations of unix calls
76 or other facilities. For perl on OS/2, for example, this would
80 This variable is be used internally by Configure to determine the
81 full pathname (if any) of the awk program. After Configure runs,
82 the value is reset to a plain "awk" and is not useful.
85 The base revision level of this package, from the .package file.
88 This variable is defined but not used by Configure.
89 The value is a plain '' and is not useful.
92 This variable holds the name of the directory in which the user wants
93 to put publicly executable images for the package in question. It
94 is most often a local directory such as /usr/local/bin. Programs using
95 this variable must be prepared to deal with ~name substitution.
97 bincompat5005 (bincompat5005.U):
98 This variable contains y if Perl 5.006 should be binary-compatible
102 This is the same as the bin variable, but is filename expanded at
103 configuration time, for use in your makefiles.
106 This variable is defined but not used by Configure.
107 The value is a plain '' and is not useful.
110 This variable is be used internally by Configure to determine the
111 full pathname (if any) of the byacc program. After Configure runs,
112 the value is reset to a plain "byacc" and is not useful.
114 byteorder (byteorder.U):
115 This variable holds the byte order. In the following, larger digits
116 indicate more significance. The variable byteorder is either 4321
117 on a big-endian machine, or 1234 on a little-endian, or 87654321
118 on a Cray ... or 3412 with weird order !
121 This variable contains the \c string if that is what causes the echo
122 command to suppress newline. Otherwise it is null. Correct usage is
123 $echo $n "prompt for a question: $c".
125 castflags (d_castneg.U):
126 This variable contains a flag that precise difficulties the
127 compiler has casting odd floating values to unsigned long:
129 1 = couldn't cast < 0
130 2 = couldn't cast >= 0x80000000
131 4 = couldn't cast in argument expression list
134 This variable is be used internally by Configure to determine the
135 full pathname (if any) of the cat program. After Configure runs,
136 the value is reset to a plain "cat" and is not useful.
139 This variable holds the name of a command to execute a C compiler which
140 can resolve multiple global references that happen to have the same
141 name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'.
143 cccdlflags (dlsrc.U):
144 This variable contains any special flags that might need to be
145 passed with 'cc -c' to compile modules to be used to create a shared
146 library that will be used for dynamic loading. For hpux, this
147 should be +z. It is up to the makefile to use it.
150 This variable contains any special flags that might need to be
151 passed to cc to link with a shared library for dynamic loading.
152 It is up to the makefile to use it. For sunos 4.1, it should
156 This variable contains any additional C compiler flags desired by
157 the user. It is up to the Makefile to use this.
159 ccsymbols (Cppsym.U):
160 The variable contains the symbols defined by the C compiler alone.
161 The symbols defined by cpp or by cc when it calls cpp are not in
162 this list, see cppsymbols and cppccsymbols.
163 The list is a space-separated list of symbol=value tokens.
166 Login name of the person who ran the Configure script and answered the
167 questions. This is used to tag both config.sh and config_h.SH.
169 cf_email (cf_email.U):
170 Electronic mail address of the person who ran Configure. This can be
171 used by units that require the user's e-mail, like MailList.U.
174 Holds the output of the "date" command when the configuration file was
175 produced. This is used to tag both config.sh and config_h.SH.
178 This variable is defined but not used by Configure.
179 The value is a plain '' and is not useful.
182 This variable is defined but not used by Configure.
183 The value is a plain '' and is not useful.
186 This variable is defined but not used by Configure.
187 The value is a plain '' and is not useful.
189 clocktype (d_times.U):
190 This variable holds the type returned by times(). It can be long,
191 or clock_t on BSD sites (in which case <sys/types.h> should be
195 This variable is be used internally by Configure to determine the
196 full pathname (if any) of the comm program. After Configure runs,
197 the value is reset to a plain "comm" and is not useful.
200 This variable is defined but not used by Configure.
201 The value is a plain '' and is not useful.
203 contains (contains.U):
204 This variable holds the command to do a grep with a proper return
205 status. On most sane systems it is simply "grep". On insane systems
206 it is a grep followed by a cat followed by a test. This variable
207 is primarily for the use of other Configure units.
210 This variable is be used internally by Configure to determine the
211 full pathname (if any) of the cp program. After Configure runs,
212 the value is reset to a plain "cp" and is not useful.
215 This variable is defined but not used by Configure.
216 The value is a plain '' and is not useful.
219 This variable is be used internally by Configure to determine the
220 full pathname (if any) of the cpp program. After Configure runs,
221 the value is reset to a plain "cpp" and is not useful.
223 cpp_stuff (cpp_stuff.U):
224 This variable contains an identification of the catenation mechanism
225 used by the C preprocessor.
227 cppccsymbols (Cppsym.U):
228 The variable contains the symbols defined by the C compiler when
229 when it calls cpp. The symbols defined by the cc alone or cpp
230 alone are not in this list, see ccsymbols and cppsymbols.
231 The list is a space-separated list of symbol=value tokens.
233 cppflags (ccflags.U):
234 This variable holds the flags that will be passed to the C pre-
235 processor. It is up to the Makefile to use it.
237 cpplast (cppstdin.U):
238 This variable has the same functionality as cppminus, only it applies
239 to cpprun and not cppstdin.
241 cppminus (cppstdin.U):
242 This variable contains the second part of the string which will invoke
243 the C preprocessor on the standard input and produce to standard
244 output. This variable will have the value "-" if cppstdin needs
245 a minus to specify standard input, otherwise the value is "".
248 This variable contains the command which will invoke a C preprocessor
249 on standard input and put the output to stdout. It is guaranteed not
250 to be a wrapper and may be a null string if no preprocessor can be
251 made directly available. This preprocessor might be different from the
252 one used by the C compiler. Don't forget to append cpplast after the
253 preprocessor options.
255 cppstdin (cppstdin.U):
256 This variable contains the command which will invoke the C
257 preprocessor on standard input and put the output to stdout.
258 It is primarily used by other Configure units that ask about
259 preprocessor symbols.
261 cppsymbols (Cppsym.U):
262 The variable contains the symbols defined by the C preprocessor
263 alone. The symbols defined by cc or by cc when it calls cpp are
264 not in this list, see ccsymbols and cppccsymbols.
265 The list is a space-separated list of symbol=value tokens.
267 crosscompile (crosscompile.U):
268 This variable conditionally defines the CROSSCOMPILE symbol
269 which signifies that the build process is be a cross-compilation.
270 This is normally set by hints files or from Configure command line.
272 cryptlib (d_crypt.U):
273 This variable holds -lcrypt or the path to a libcrypt.a archive if
274 the crypt() function is not defined in the standard C library. It is
275 up to the Makefile to use this.
278 This variable is be used internally by Configure to determine the
279 full pathname (if any) of the csh program. After Configure runs,
280 the value is reset to a plain "csh" and is not useful.
282 d_access (d_access.U):
283 This variable conditionally defines HAS_ACCESS if the access() system
284 call is available to check for access permissions using real IDs.
286 d_accessx (d_accessx.U):
287 This variable conditionally defines the HAS_ACCESSX symbol, which
288 indicates to the C program that the accessx() routine is available.
291 This variable conditionally defines the HAS_ALARM symbol, which
292 indicates to the C program that the alarm() routine is available.
294 d_archlib (archlib.U):
295 This variable conditionally defines ARCHLIB to hold the pathname
296 of architecture-dependent library files for $package. If
297 $archlib is the same as $privlib, then this is set to undef.
299 d_attribut (d_attribut.U):
300 This variable conditionally defines HASATTRIBUTE, which
301 indicates the C compiler can check for function attributes,
302 such as printf formats.
305 This variable conditionally defines the HAS_BCMP symbol if
306 the bcmp() routine is available to compare strings.
309 This variable conditionally defines the HAS_BCOPY symbol if
310 the bcopy() routine is available to copy strings.
312 d_bincompat5005 (bincompat5005.U):
313 This variable conditionally defines BINCOMPAT5005 so that embed.h
314 can take special action if Perl 5.006 should be binary-compatible
315 with Perl 5.005. This is impossible for builds that use features
316 like threads and multiplicity it is always $undef for those versions.
319 This symbol conditionally defines the symbol BSD when running on a
322 d_bsdgetpgrp (d_getpgrp.U):
323 This variable conditionally defines USE_BSD_GETPGRP if
324 getpgrp needs one arguments whereas USG one needs none.
326 d_bsdsetpgrp (d_setpgrp.U):
327 This variable conditionally defines USE_BSD_SETPGRP if
328 setpgrp needs two arguments whereas USG one needs none.
329 See also d_setpgid for a POSIX interface.
332 This variable conditionally defines the HAS_BZERO symbol if
333 the bzero() routine is available to set memory to 0.
335 d_casti32 (d_casti32.U):
336 This variable conditionally defines CASTI32, which indicates
337 whether the C compiler can cast large floats to 32-bit ints.
339 d_castneg (d_castneg.U):
340 This variable conditionally defines CASTNEG, which indicates
341 wether the C compiler can cast negative float to unsigned.
343 d_charvspr (d_vprintf.U):
344 This variable conditionally defines CHARVSPRINTF if this system
345 has vsprintf returning type (char*). The trend seems to be to
346 declare it as "int vsprintf()".
349 This variable conditionally defines the HAS_CHOWN symbol, which
350 indicates to the C program that the chown() routine is available.
352 d_chroot (d_chroot.U):
353 This variable conditionally defines the HAS_CHROOT symbol, which
354 indicates to the C program that the chroot() routine is available.
356 d_chsize (d_chsize.U):
357 This variable conditionally defines the CHSIZE symbol, which
358 indicates to the C program that the chsize() routine is available
359 to truncate files. You might need a -lx to get this routine.
361 d_closedir (d_closedir.U):
362 This variable conditionally defines HAS_CLOSEDIR if closedir() is
365 d_cmsghdr_s (d_socket.U):
366 This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
367 which indicates that the the struct cmsghdr is supported.
370 This variable conditionally defines the HASCONST symbol, which
371 indicates to the C program that this C compiler knows about the
375 This variable conditionally defines the CRYPT symbol, which
376 indicates to the C program that the crypt() routine is available
377 to encrypt passwords and the like.
380 This variable conditionally defines the CSH symbol, which
381 indicates to the C program that the C-shell exists.
383 d_cuserid (d_cuserid.U):
384 This variable conditionally defines the HAS_CUSERID symbol, which
385 indicates to the C program that the cuserid() routine is available
386 to get character login names.
388 d_dbl_dig (d_dbl_dig.U):
389 This variable conditionally defines d_dbl_dig if this system's
390 header files provide DBL_DIG, which is the number of significant
391 digits in a double precision number.
393 d_dbmclose64 (dbm64.U):
394 This variable conditionally defines the HAS_DBMCLOSE64 symbol, which
395 indicates to the C program that the dbmclose64() routine is available.
397 d_dbminit64 (dbm64.U):
398 This variable conditionally defines the HAS_DBMINIT64 symbol, which
399 indicates to the C program that the dbminit64() routine is available.
401 d_delete64 (dbm64.U):
402 This variable conditionally defines the HAS_DELETE64 symbol, which
403 indicates to the C program that the delete64() routine is available.
405 d_difftime (d_difftime.U):
406 This variable conditionally defines the HAS_DIFFTIME symbol, which
407 indicates to the C program that the difftime() routine is available.
409 d_dirent64_s (io64.U):
410 This symbol will be defined if the C compiler supports struct dirent64.
412 d_dirnamlen (i_dirent.U):
413 This variable conditionally defines DIRNAMLEN, which indicates
414 to the C program that the length of directory entry names is
415 provided by a d_namelen field.
417 d_dlerror (d_dlerror.U):
418 This variable conditionally defines the HAS_DLERROR symbol, which
419 indicates to the C program that the dlerror() routine is available.
421 d_dlopen (d_dlopen.U):
422 This variable conditionally defines the HAS_DLOPEN symbol, which
423 indicates to the C program that the dlopen() routine is available.
425 d_dlsymun (d_dlsymun.U):
426 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
427 indicates that we need to prepend an underscore to the symbol
428 name before calling dlsym().
430 d_dosuid (d_dosuid.U):
431 This variable conditionally defines the symbol DOSUID, which
432 tells the C program that it should insert setuid emulation code
433 on hosts which have setuid #! scripts disabled.
435 d_drand48proto (d_drand48proto.U):
436 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
437 which indicates to the C program that the system provides
438 a prototype for the drand48() function. Otherwise, it is
439 up to the program to supply one.
442 This variable conditionally defines HAS_DUP2 if dup2() is
443 available to duplicate file descriptors.
445 d_eaccess (d_eaccess.U):
446 This variable conditionally defines the HAS_EACCESS symbol, which
447 indicates to the C program that the eaccess() routine is available.
449 d_endgrent (d_endgrent.U):
450 This variable conditionally defines the HAS_ENDGRENT symbol, which
451 indicates to the C program that the endgrent() routine is available
452 for sequential access of the group database.
454 d_endhent (d_endhent.U):
455 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
456 available to close whatever was being used for host queries.
458 d_endnent (d_endnent.U):
459 This variable conditionally defines HAS_ENDNETENT if endnetent() is
460 available to close whatever was being used for network queries.
462 d_endpent (d_endpent.U):
463 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
464 available to close whatever was being used for protocol queries.
466 d_endpwent (d_endpwent.U):
467 This variable conditionally defines the HAS_ENDPWENT symbol, which
468 indicates to the C program that the endpwent() routine is available
469 for sequential access of the passwd database.
471 d_endsent (d_endsent.U):
472 This variable conditionally defines HAS_ENDSERVENT if endservent() is
473 available to close whatever was being used for service queries.
475 d_endspent (d_endspent.U):
476 This variable conditionally defines HAS_ENDSPENT if endspent() is
477 available to finalize the scan of SysV shadow password entries.
479 d_eofnblk (nblock_io.U):
480 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
481 when reading from a non-blocking I/O source.
484 This variable conditionally defines the symbols EUNICE and VAX, which
485 alerts the C program that it must deal with ideosyncracies of VMS.
487 d_fchmod (d_fchmod.U):
488 This variable conditionally defines the HAS_FCHMOD symbol, which
489 indicates to the C program that the fchmod() routine is available
490 to change mode of opened files.
492 d_fchown (d_fchown.U):
493 This variable conditionally defines the HAS_FCHOWN symbol, which
494 indicates to the C program that the fchown() routine is available
495 to change ownership of opened files.
498 This variable conditionally defines the HAS_FCNTL symbol, and indicates
499 whether the fcntl() function exists
501 d_fd_macros (d_fd_set.U):
502 This variable contains the eventual value of the HAS_FD_MACROS symbol,
503 which indicates if your C compiler knows about the macros which
504 manipulate an fd_set.
506 d_fd_set (d_fd_set.U):
507 This variable contains the eventual value of the HAS_FD_SET symbol,
508 which indicates if your C compiler knows about the fd_set typedef.
510 d_fds_bits (d_fd_set.U):
511 This variable contains the eventual value of the HAS_FDS_BITS symbol,
512 which indicates if your fd_set typedef contains the fds_bits member.
513 If you have an fd_set typedef, but the dweebs who installed it did
514 a half-fast job and neglected to provide the macros to manipulate
515 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
518 This variable conditionally defines the HAS_FETCH64 symbol, which
519 indicates to the C program that the fetch64() routine is available.
521 d_fgetpos64 (stdio64.U):
522 This variable conditionally defines the HAS_FGETPOS64 symbol, which
523 indicates to the C program that the fgetpos64() routine is available.
525 d_fgetpos (d_fgetpos.U):
526 This variable conditionally defines HAS_FGETPOS if fgetpos() is
527 available to get the file position indicator.
529 d_firstkey64 (dbm64.U):
530 This variable conditionally defines the HAS_FIRSTKEY64 symbol, which
531 indicates to the C program that the firstkey64() routine is available.
533 d_flexfnam (d_flexfnam.U):
534 This variable conditionally defines the FLEXFILENAMES symbol, which
535 indicates that the system supports filenames longer than 14 characters.
537 d_flock64_s (io64.U):
538 This symbol will be defined if the C compiler supports struct flock64.
541 This variable conditionally defines HAS_FLOCK if flock() is
542 available to do file locking.
544 d_fopen64 (stdio64.U):
545 This variable conditionally defines the HAS_FOPEN64 symbol, which
546 indicates to the C program that the fopen64() routine is available.
549 This variable conditionally defines the HAS_FORK symbol, which
550 indicates to the C program that the fork() routine is available.
552 d_fpathconf (d_pathconf.U):
553 This variable conditionally defines the HAS_FPATHCONF symbol, which
554 indicates to the C program that the pathconf() routine is available
555 to determine file-system related limits and options associated
556 with a given open file descriptor.
558 d_freopen64 (stdio64.U):
559 This variable conditionally defines the HAS_FREOPEN64 symbol, which
560 indicates to the C program that the freopen64() routine is available.
562 d_fseek64 (stdio64.U):
563 This variable conditionally defines the HAS_FSEEK64 symbol, which
564 indicates to the C program that the fseek64() routine is available.
566 d_fseeko64 (stdio64.U):
567 This variable conditionally defines the HAS_FSEEKO64 symbol, which
568 indicates to the C program that the fseeko64() routine is available.
570 d_fseeko (d_fseeko.U):
571 This variable conditionally defines the HAS_FSEEKO symbol, which
572 indicates to the C program that the fseeko() routine is available.
574 d_fsetpos64 (stdio64.U):
575 This variable conditionally defines the HAS_FSETPOS64 symbol, which
576 indicates to the C program that the fsetpos64() routine is available.
578 d_fsetpos (d_fsetpos.U):
579 This variable conditionally defines HAS_FSETPOS if fsetpos() is
580 available to set the file position indicator.
583 This variable conditionally defines the HAS_FSTAT64 symbol, which
584 indicates to the C program that the fstat64() routine is available.
586 d_fstatfs (d_statfs.U):
587 This variable conditionally defines the HAS_FSTATFS symbol, which
588 indicates to the C program that the fstatfs() routine is available.
590 d_fstatvfs (d_statvfs.U):
591 This variable conditionally defines the HAS_FSTATVFS symbol, which
592 indicates to the C program that the fstatvfs() routine is available.
594 d_ftell64 (stdio64.U):
595 This variable conditionally defines the HAS_FTELL64 symbol, which
596 indicates to the C program that the ftell64() routine is available.
598 d_ftello64 (stdio64.U):
599 This variable conditionally defines the HAS_FTELLO64 symbol, which
600 indicates to the C program that the ftello64() routine is available.
602 d_ftello (d_ftello.U):
603 This variable conditionally defines the HAS_FTELLO symbol, which
604 indicates to the C program that the ftello() routine is available.
607 This variable conditionally defines the HAS_FTIME symbol, which indicates
608 that the ftime() routine exists. The ftime() routine is basically
609 a sub-second accuracy clock.
611 d_ftruncate64 (io64.U):
612 This variable conditionally defines the HAS_FTRUNCATE64 symbol, which
613 indicates to the C program that the ftruncate64() routine is available.
615 d_Gconvert (d_gconvert.U):
616 This variable holds what Gconvert is defined as to convert
617 floating point numbers into strings. It could be 'gconvert'
618 or a more complex macro emulating gconvert with gcvt() or sprintf.
620 d_Gconvert='gconvert((x),(n),(t),(b))'
621 d_Gconvert='gcvt((x),(n),(b))'
622 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
624 d_getgrent (d_getgrent.U):
625 This variable conditionally defines the HAS_GETGRENT symbol, which
626 indicates to the C program that the getgrent() routine is available
627 for sequential access of the group database.
629 d_getgrps (d_getgrps.U):
630 This variable conditionally defines the HAS_GETGROUPS symbol, which
631 indicates to the C program that the getgroups() routine is available
632 to get the list of process groups.
634 d_gethbyaddr (d_gethbyad.U):
635 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
636 indicates to the C program that the gethostbyaddr() routine is available
637 to look up hosts by their IP addresses.
639 d_gethbyname (d_gethbynm.U):
640 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
641 indicates to the C program that the gethostbyname() routine is available
642 to look up host names in some data base or other.
644 d_gethent (d_gethent.U):
645 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
646 available to look up host names in some data base or another.
648 d_gethname (d_gethname.U):
649 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
650 indicates to the C program that the gethostname() routine may be
651 used to derive the host name.
653 d_gethostprotos (d_gethostprotos.U):
654 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
655 which indicates to the C program that <netdb.h> supplies
656 prototypes for the various gethost*() functions.
657 See also netdbtype.U for probing for various netdb types.
659 d_getlogin (d_getlogin.U):
660 This variable conditionally defines the HAS_GETLOGIN symbol, which
661 indicates to the C program that the getlogin() routine is available
662 to get the login name.
664 d_getmntent (d_getmntent.U):
665 This variable conditionally defines the HAS_GETMNTENT symbol, which
666 indicates to the C program that the getmntent() routine is available
667 to iterate through mounted files.
669 d_getnbyaddr (d_getnbyad.U):
670 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
671 indicates to the C program that the getnetbyaddr() routine is available
672 to look up networks by their IP addresses.
674 d_getnbyname (d_getnbynm.U):
675 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
676 indicates to the C program that the getnetbyname() routine is available
677 to look up networks by their names.
679 d_getnent (d_getnent.U):
680 This variable conditionally defines HAS_GETNETENT if getnetent() is
681 available to look up network names in some data base or another.
683 d_getnetprotos (d_getnetprotos.U):
684 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
685 which indicates to the C program that <netdb.h> supplies
686 prototypes for the various getnet*() functions.
687 See also netdbtype.U for probing for various netdb types.
689 d_getpbyname (d_getprotby.U):
690 This variable conditionally defines the HAS_GETPROTOBYNAME
691 symbol, which indicates to the C program that the
692 getprotobyname() routine is available to look up protocols
695 d_getpbynumber (d_getprotby.U):
696 This variable conditionally defines the HAS_GETPROTOBYNUMBER
697 symbol, which indicates to the C program that the
698 getprotobynumber() routine is available to look up protocols
701 d_getpent (d_getpent.U):
702 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
703 available to look up protocols in some data base or another.
705 d_getpgid (d_getpgid.U):
706 This variable conditionally defines the HAS_GETPGID symbol, which
707 indicates to the C program that the getpgid(pid) function
708 is available to get the process group id.
710 d_getpgrp2 (d_getpgrp2.U):
711 This variable conditionally defines the HAS_GETPGRP2 symbol, which
712 indicates to the C program that the getpgrp2() (as in DG/UX) routine
713 is available to get the current process group.
715 d_getpgrp (d_getpgrp.U):
716 This variable conditionally defines HAS_GETPGRP if getpgrp() is
717 available to get the current process group.
719 d_getppid (d_getppid.U):
720 This variable conditionally defines the HAS_GETPPID symbol, which
721 indicates to the C program that the getppid() routine is available
722 to get the parent process ID.
724 d_getprior (d_getprior.U):
725 This variable conditionally defines HAS_GETPRIORITY if getpriority()
726 is available to get a process's priority.
728 d_getprotoprotos (d_getprotoprotos.U):
729 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
730 which indicates to the C program that <netdb.h> supplies
731 prototypes for the various getproto*() functions.
732 See also netdbtype.U for probing for various netdb types.
734 d_getpwent (d_getpwent.U):
735 This variable conditionally defines the HAS_GETPWENT symbol, which
736 indicates to the C program that the getpwent() routine is available
737 for sequential access of the passwd database.
739 d_getsbyname (d_getsrvby.U):
740 This variable conditionally defines the HAS_GETSERVBYNAME
741 symbol, which indicates to the C program that the
742 getservbyname() routine is available to look up services
745 d_getsbyport (d_getsrvby.U):
746 This variable conditionally defines the HAS_GETSERVBYPORT
747 symbol, which indicates to the C program that the
748 getservbyport() routine is available to look up services
751 d_getsent (d_getsent.U):
752 This variable conditionally defines HAS_GETSERVENT if getservent() is
753 available to look up network services in some data base or another.
755 d_getservprotos (d_getservprotos.U):
756 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
757 which indicates to the C program that <netdb.h> supplies
758 prototypes for the various getserv*() functions.
759 See also netdbtype.U for probing for various netdb types.
761 d_getspent (d_getspent.U):
762 This variable conditionally defines HAS_GETSPENT if getspent() is
763 available to retrieve SysV shadow password entries sequentially.
765 d_getspnam (d_getspnam.U):
766 This variable conditionally defines HAS_GETSPNAM if getspnam() is
767 available to retrieve SysV shadow password entries by name.
769 d_gettimeod (d_ftime.U):
770 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
771 indicates that the gettimeofday() system call exists (to obtain a
772 sub-second accuracy clock). You should probably include <sys/resource.h>.
774 d_gnulibc (d_gnulibc.U):
775 Defined if we're dealing with the GNU C Library.
777 d_grpasswd (i_grp.U):
778 This variable conditionally defines GRPASSWD, which indicates
779 that struct group in <grp.h> contains gr_passwd.
781 d_hasmntopt (d_hasmntopt.U):
782 This variable conditionally defines the HAS_HASMNTOPT symbol, which
783 indicates to the C program that the hasmntopt() routine is available
784 to query the mount options of file systems.
787 This variable conditionally defines HAS_HTONL if htonl() and its
788 friends are available to do network order byte swapping.
790 d_index (d_strchr.U):
791 This variable conditionally defines HAS_INDEX if index() and
792 rindex() are available for string searching.
794 d_inetaton (d_inetaton.U):
795 This variable conditionally defines the HAS_INET_ATON symbol, which
796 indicates to the C program that the inet_aton() function is available
797 to parse IP address "dotted-quad" strings.
800 This symbol will be defined if the C compiler supports ino64_t.
802 d_int64t (i_inttypes.U):
803 This symbol will be defined if the C compiler supports int64_t.
805 d_iovec_s (i_sysuio.U):
806 This variable conditionally defines the HAS_STRUCT_IOVEC symbol,
807 which indicates that the struct iovec is supported.
809 d_isascii (d_isascii.U):
810 This variable conditionally defines the HAS_ISASCII constant,
811 which indicates to the C program that isascii() is available.
813 d_killpg (d_killpg.U):
814 This variable conditionally defines the HAS_KILLPG symbol, which
815 indicates to the C program that the killpg() routine is available
816 to kill process groups.
818 d_lchown (d_lchown.U):
819 This variable conditionally defines the HAS_LCHOWN symbol, which
820 indicates to the C program that the lchown() routine is available
821 to operate on a symbolic link (instead of following the link).
824 This variable conditionally defines HAS_LINK if link() is
825 available to create hard links.
828 This variable conditionally defines the HAS_LLSEEK symbol, which
829 indicates to the C program that the llseek() routine is available.
831 d_locconv (d_locconv.U):
832 This variable conditionally defines HAS_LOCALECONV if localeconv() is
833 available for numeric and monetary formatting conventions.
836 This variable conditionally defines the HAS_LOCKF64 symbol, which
837 indicates to the C program that the lockf64() routine is available.
840 This variable conditionally defines HAS_LOCKF if lockf() is
841 available to do file locking.
843 d_longdbl (d_longdbl.U):
844 This variable conditionally defines HAS_LONG_DOUBLE if
845 the long double type is supported.
847 d_longlong (d_longlong.U):
848 This variable conditionally defines HAS_LONG_LONG if
849 the long long type is supported.
852 This variable conditionally defines the HAS_LSEEK64 symbol, which
853 indicates to the C program that the lseek64() routine is available.
856 This variable conditionally defines the HAS_LSTAT64 symbol, which
857 indicates to the C program that the lstat64() routine is available.
860 This variable conditionally defines HAS_LSTAT if lstat() is
861 available to do file stats on symbolic links.
863 d_madvise (d_madvise.U):
864 This variable conditionally defines HAS_MADVISE if madvise() is
865 available to map a file into memory.
868 This variable conditionally defines the HAS_MBLEN symbol, which
869 indicates to the C program that the mblen() routine is available
870 to find the number of bytes in a multibye character.
872 d_mbstowcs (d_mbstowcs.U):
873 This variable conditionally defines the HAS_MBSTOWCS symbol, which
874 indicates to the C program that the mbstowcs() routine is available
875 to convert a multibyte string into a wide character string.
877 d_mbtowc (d_mbtowc.U):
878 This variable conditionally defines the HAS_MBTOWC symbol, which
879 indicates to the C program that the mbtowc() routine is available
880 to convert multibyte to a wide character.
882 d_memchr (d_memchr.U):
883 This variable conditionally defines the HAS_MEMCHR symbol, which
884 indicates to the C program that the memchr() routine is available
885 to locate characters within a C string.
887 d_memcmp (d_memcmp.U):
888 This variable conditionally defines the HAS_MEMCMP symbol, which
889 indicates to the C program that the memcmp() routine is available
890 to compare blocks of memory.
892 d_memcpy (d_memcpy.U):
893 This variable conditionally defines the HAS_MEMCPY symbol, which
894 indicates to the C program that the memcpy() routine is available
895 to copy blocks of memory.
897 d_memmove (d_memmove.U):
898 This variable conditionally defines the HAS_MEMMOVE symbol, which
899 indicates to the C program that the memmove() routine is available
900 to copy potentatially overlapping blocks of memory.
902 d_memset (d_memset.U):
903 This variable conditionally defines the HAS_MEMSET symbol, which
904 indicates to the C program that the memset() routine is available
905 to set blocks of memory.
908 This variable conditionally defines the HAS_MKDIR symbol, which
909 indicates to the C program that the mkdir() routine is available
910 to create directories..
912 d_mkfifo (d_mkfifo.U):
913 This variable conditionally defines the HAS_MKFIFO symbol, which
914 indicates to the C program that the mkfifo() routine is available.
916 d_mktime (d_mktime.U):
917 This variable conditionally defines the HAS_MKTIME symbol, which
918 indicates to the C program that the mktime() routine is available.
921 This variable conditionally defines HAS_MMAP if mmap() is
922 available to map a file into memory.
924 d_mprotect (d_mprotect.U):
925 This variable conditionally defines HAS_MPROTECT if mprotect() is
926 available to modify the access protection of a memory mapped file.
929 This variable conditionally defines the HAS_MSG symbol, which
930 indicates that the entire msg*(2) library is present.
932 d_msg_ctrunc (d_socket.U):
933 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
934 which indicates that the MSG_CTRUNC is available. #ifdef is
935 not enough because it may be an enum, glibc has been known to do this.
937 d_msg_dontroute (d_socket.U):
938 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
939 which indicates that the MSG_DONTROUTE is available. #ifdef is
940 not enough because it may be an enum, glibc has been known to do this.
942 d_msg_oob (d_socket.U):
943 This variable conditionally defines the HAS_MSG_OOB symbol,
944 which indicates that the MSG_OOB is available. #ifdef is
945 not enough because it may be an enum, glibc has been known to do this.
947 d_msg_peek (d_socket.U):
948 This variable conditionally defines the HAS_MSG_PEEK symbol,
949 which indicates that the MSG_PEEK is available. #ifdef is
950 not enough because it may be an enum, glibc has been known to do this.
952 d_msg_proxy (d_socket.U):
953 This variable conditionally defines the HAS_MSG_PROXY symbol,
954 which indicates that the MSG_PROXY is available. #ifdef is
955 not enough because it may be an enum, glibc has been known to do this.
957 d_msgctl (d_msgctl.U):
958 This variable conditionally defines the HAS_MSGCTL symbol, which
959 indicates to the C program that the msgctl() routine is available.
961 d_msgget (d_msgget.U):
962 This variable conditionally defines the HAS_MSGGET symbol, which
963 indicates to the C program that the msgget() routine is available.
965 d_msghdr_s (d_socket.U):
966 This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
967 which indicates that the struct msghdr is supported.
969 d_msgrcv (d_msgrcv.U):
970 This variable conditionally defines the HAS_MSGRCV symbol, which
971 indicates to the C program that the msgrcv() routine is available.
973 d_msgsnd (d_msgsnd.U):
974 This variable conditionally defines the HAS_MSGSND symbol, which
975 indicates to the C program that the msgsnd() routine is available.
978 This variable conditionally defines HAS_MSYNC if msync() is
979 available to synchronize a mapped file.
981 d_munmap (d_munmap.U):
982 This variable conditionally defines HAS_MUNMAP if munmap() is
983 available to unmap a region mapped by mmap().
985 d_mymalloc (mallocsrc.U):
986 This variable conditionally defines MYMALLOC in case other parts
987 of the source want to take special action if MYMALLOC is used.
988 This may include different sorts of profiling or error detection.
990 d_nextkey64 (dbm64.U):
991 This variable conditionally defines the HAS_NEXTKEY64 symbol, which
992 indicates to the C program that the nextkey64() routine is available.
995 This variable conditionally defines the HAS_NICE symbol, which
996 indicates to the C program that the nice() routine is available.
999 This symbol will be defined if the C compiler supports off64_t.
1001 d_offset_t (io64.U):
1002 This symbol will be defined if the C compiler supports offset_t.
1004 d_old_pthread_create_joinable (d_pthrattrj.U):
1005 This variable conditionally defines pthread_create_joinable.
1006 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1008 d_oldpthreads (usethreads.U):
1009 This variable conditionally defines the OLD_PTHREADS_API symbol,
1010 and indicates that Perl should be built to use the old
1011 draft POSIX threads API. This is only potentially meaningful if
1014 d_oldsock (d_socket.U):
1015 This variable conditionally defines the OLDSOCKET symbol, which
1016 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1018 d_open3 (d_open3.U):
1019 This variable conditionally defines the HAS_OPEN3 manifest constant,
1020 which indicates to the C program that the 3 argument version of
1021 the open(2) function is available.
1024 This variable conditionally defines the HAS_OPEN64 symbol, which
1025 indicates to the C program that the open64() routine is available.
1027 d_opendir64 (io64.U):
1028 This variable conditionally defines the HAS_OPENDIR64 symbol, which
1029 indicates to the C program that the opendir64() routine is available.
1031 d_pathconf (d_pathconf.U):
1032 This variable conditionally defines the HAS_PATHCONF symbol, which
1033 indicates to the C program that the pathconf() routine is available
1034 to determine file-system related limits and options associated
1035 with a given filename.
1037 d_pause (d_pause.U):
1038 This variable conditionally defines the HAS_PAUSE symbol, which
1039 indicates to the C program that the pause() routine is available
1040 to suspend a process until a signal is received.
1042 d_phostname (d_gethname.U):
1043 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1044 contains the shell command which, when fed to popen(), may be
1045 used to derive the host name.
1048 This variable conditionally defines the HAS_PIPE symbol, which
1049 indicates to the C program that the pipe() routine is available
1050 to create an inter-process channel.
1053 This variable conditionally defines the HAS_POLL symbol, which
1054 indicates to the C program that the poll() routine is available
1055 to poll active file descriptors.
1057 d_portable (d_portable.U):
1058 This variable conditionally defines the PORTABLE symbol, which
1059 indicates to the C program that it should not assume that it is
1060 running on the machine it was compiled on.
1062 d_pthread_yield (d_pthread_y.U):
1063 This variable conditionally defines the HAS_PTHREAD_YIELD
1064 symbol if the pthread_yield routine is available to yield
1065 the execution of the current thread.
1068 This variable conditionally defines PWAGE, which indicates
1069 that struct passwd contains pw_age.
1071 d_pwchange (i_pwd.U):
1072 This variable conditionally defines PWCHANGE, which indicates
1073 that struct passwd contains pw_change.
1075 d_pwclass (i_pwd.U):
1076 This variable conditionally defines PWCLASS, which indicates
1077 that struct passwd contains pw_class.
1079 d_pwcomment (i_pwd.U):
1080 This variable conditionally defines PWCOMMENT, which indicates
1081 that struct passwd contains pw_comment.
1083 d_pwexpire (i_pwd.U):
1084 This variable conditionally defines PWEXPIRE, which indicates
1085 that struct passwd contains pw_expire.
1087 d_pwgecos (i_pwd.U):
1088 This variable conditionally defines PWGECOS, which indicates
1089 that struct passwd contains pw_gecos.
1091 d_pwpasswd (i_pwd.U):
1092 This variable conditionally defines PWPASSWD, which indicates
1093 that struct passwd contains pw_passwd.
1095 d_pwquota (i_pwd.U):
1096 This variable conditionally defines PWQUOTA, which indicates
1097 that struct passwd contains pw_quota.
1099 d_readdir64 (io64.U):
1100 This variable conditionally defines the HAS_READDIR64 symbol, which
1101 indicates to the C program that the readdir64() routine is available.
1103 d_readdir (d_readdir.U):
1104 This variable conditionally defines HAS_READDIR if readdir() is
1105 available to read directory entries.
1107 d_readlink (d_readlink.U):
1108 This variable conditionally defines the HAS_READLINK symbol, which
1109 indicates to the C program that the readlink() routine is available
1110 to read the value of a symbolic link.
1112 d_readv (d_readv.U):
1113 This variable conditionally defines the HAS_READV symbol, which
1114 indicates to the C program that the readv() routine is available.
1116 d_recvmsg (d_socket.U):
1117 This variable conditionally defines the HAS_RECVMSG symbol,
1118 which indicates that the recvmsg is supported.
1120 d_rename (d_rename.U):
1121 This variable conditionally defines the HAS_RENAME symbol, which
1122 indicates to the C program that the rename() routine is available
1125 d_rewinddir (d_readdir.U):
1126 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1129 d_rmdir (d_rmdir.U):
1130 This variable conditionally defines HAS_RMDIR if rmdir() is
1131 available to remove directories.
1133 d_safebcpy (d_safebcpy.U):
1134 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1135 the bcopy() routine can do overlapping copies.
1137 d_safemcpy (d_safemcpy.U):
1138 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1139 the memcpy() routine can do overlapping copies.
1141 d_sanemcmp (d_sanemcmp.U):
1142 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1143 the memcpy() routine is available and can be used to compare relative
1144 magnitudes of chars with their high bits set.
1146 d_sched_yield (d_pthread_y.U):
1147 This variable conditionally defines the HAS_SCHED_YIELD
1148 symbol if the sched_yield routine is available to yield
1149 the execution of the current thread.
1151 d_scm_rights (d_socket.U):
1152 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1153 which indicates that the SCM_RIGHTS is available. #ifdef is
1154 not enough because it may be an enum, glibc has been known to do this.
1156 d_seekdir64 (io64.U):
1157 This variable conditionally defines the HAS_SEEKDIR64 symbol, which
1158 indicates to the C program that the seekdir64() routine is available.
1160 d_seekdir (d_readdir.U):
1161 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1164 d_select (d_select.U):
1165 This variable conditionally defines HAS_SELECT if select() is
1166 available to select active file descriptors. A <sys/time.h>
1167 inclusion may be necessary for the timeout field.
1170 This variable conditionally defines the HAS_SEM symbol, which
1171 indicates that the entire sem*(2) library is present.
1173 d_semctl (d_semctl.U):
1174 This variable conditionally defines the HAS_SEMCTL symbol, which
1175 indicates to the C program that the semctl() routine is available.
1177 d_semctl_semid_ds (d_union_semun.U):
1178 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1179 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1181 d_semctl_semun (d_union_semun.U):
1182 This variable conditionally defines USE_SEMCTL_SEMUN, which
1183 indicates that union semun is to be used for semctl IPC_STAT.
1185 d_semget (d_semget.U):
1186 This variable conditionally defines the HAS_SEMGET symbol, which
1187 indicates to the C program that the semget() routine is available.
1189 d_semop (d_semop.U):
1190 This variable conditionally defines the HAS_SEMOP symbol, which
1191 indicates to the C program that the semop() routine is available.
1193 d_sendmsg (d_socket.U):
1194 This variable conditionally defines the HAS_SENDMSG symbol,
1195 which indicates that the sendmsg is supported.
1197 d_setegid (d_setegid.U):
1198 This variable conditionally defines the HAS_SETEGID symbol, which
1199 indicates to the C program that the setegid() routine is available
1200 to change the effective gid of the current program.
1202 d_seteuid (d_seteuid.U):
1203 This variable conditionally defines the HAS_SETEUID symbol, which
1204 indicates to the C program that the seteuid() routine is available
1205 to change the effective uid of the current program.
1207 d_setgrent (d_setgrent.U):
1208 This variable conditionally defines the HAS_SETGRENT symbol, which
1209 indicates to the C program that the setgrent() routine is available
1210 for initializing sequential access to the group database.
1212 d_setgrps (d_setgrps.U):
1213 This variable conditionally defines the HAS_SETGROUPS symbol, which
1214 indicates to the C program that the setgroups() routine is available
1215 to set the list of process groups.
1217 d_sethent (d_sethent.U):
1218 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1221 d_setlinebuf (d_setlnbuf.U):
1222 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1223 indicates to the C program that the setlinebuf() routine is available
1224 to change stderr or stdout from block-buffered or unbuffered to a
1227 d_setlocale (d_setlocale.U):
1228 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1229 available to handle locale-specific ctype implementations.
1231 d_setnent (d_setnent.U):
1232 This variable conditionally defines HAS_SETNETENT if setnetent() is
1235 d_setpent (d_setpent.U):
1236 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1239 d_setpgid (d_setpgid.U):
1240 This variable conditionally defines the HAS_SETPGID symbol if the
1241 setpgid(pid, gpid) function is available to set process group ID.
1243 d_setpgrp2 (d_setpgrp2.U):
1244 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1245 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1246 is available to set the current process group.
1248 d_setpgrp (d_setpgrp.U):
1249 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1250 available to set the current process group.
1252 d_setprior (d_setprior.U):
1253 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1254 is available to set a process's priority.
1256 d_setpwent (d_setpwent.U):
1257 This variable conditionally defines the HAS_SETPWENT symbol, which
1258 indicates to the C program that the setpwent() routine is available
1259 for initializing sequential access to the passwd database.
1261 d_setregid (d_setregid.U):
1262 This variable conditionally defines HAS_SETREGID if setregid() is
1263 available to change the real and effective gid of the current
1266 d_setresgid (d_setregid.U):
1267 This variable conditionally defines HAS_SETRESGID if setresgid() is
1268 available to change the real, effective and saved gid of the current
1271 d_setresuid (d_setreuid.U):
1272 This variable conditionally defines HAS_SETREUID if setresuid() is
1273 available to change the real, effective and saved uid of the current
1276 d_setreuid (d_setreuid.U):
1277 This variable conditionally defines HAS_SETREUID if setreuid() is
1278 available to change the real and effective uid of the current
1281 d_setrgid (d_setrgid.U):
1282 This variable conditionally defines the HAS_SETRGID symbol, which
1283 indicates to the C program that the setrgid() routine is available
1284 to change the real gid of the current program.
1286 d_setruid (d_setruid.U):
1287 This variable conditionally defines the HAS_SETRUID symbol, which
1288 indicates to the C program that the setruid() routine is available
1289 to change the real uid of the current program.
1291 d_setsent (d_setsent.U):
1292 This variable conditionally defines HAS_SETSERVENT if setservent() is
1295 d_setsid (d_setsid.U):
1296 This variable conditionally defines HAS_SETSID if setsid() is
1297 available to set the process group ID.
1299 d_setspent (d_setspent.U):
1300 This variable conditionally defines HAS_SETSPENT if setspent() is
1301 available to initialize the scan of SysV shadow password entries.
1303 d_setvbuf (d_setvbuf.U):
1304 This variable conditionally defines the HAS_SETVBUF symbol, which
1305 indicates to the C program that the setvbuf() routine is available
1306 to change buffering on an open stdio stream.
1309 This variable conditionally defines the USE_SFIO symbol,
1310 and indicates whether sfio is available (and should be used).
1313 This variable conditionally defines the HAS_SHM symbol, which
1314 indicates that the entire shm*(2) library is present.
1316 d_shmat (d_shmat.U):
1317 This variable conditionally defines the HAS_SHMAT symbol, which
1318 indicates to the C program that the shmat() routine is available.
1320 d_shmatprototype (d_shmat.U):
1321 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1322 symbol, which indicates that sys/shm.h has a prototype for
1325 d_shmctl (d_shmctl.U):
1326 This variable conditionally defines the HAS_SHMCTL symbol, which
1327 indicates to the C program that the shmctl() routine is available.
1329 d_shmdt (d_shmdt.U):
1330 This variable conditionally defines the HAS_SHMDT symbol, which
1331 indicates to the C program that the shmdt() routine is available.
1333 d_shmget (d_shmget.U):
1334 This variable conditionally defines the HAS_SHMGET symbol, which
1335 indicates to the C program that the shmget() routine is available.
1337 d_sigaction (d_sigaction.U):
1338 This variable conditionally defines the HAS_SIGACTION symbol, which
1339 indicates that the Vr4 sigaction() routine is available.
1341 d_sigsetjmp (d_sigsetjmp.U):
1342 This variable conditionally defines the HAS_SIGSETJMP symbol,
1343 which indicates that the sigsetjmp() routine is available to
1344 call setjmp() and optionally save the process's signal mask.
1346 d_socket (d_socket.U):
1347 This variable conditionally defines HAS_SOCKET, which indicates
1348 that the BSD socket interface is supported.
1350 d_sockpair (d_socket.U):
1351 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1352 indicates that the BSD socketpair() is supported.
1355 This variable conditionally defines the HAS_STAT64 symbol, which
1356 indicates to the C program that the stat64() routine is available.
1358 d_statblks (d_statblks.U):
1359 This variable conditionally defines USE_STAT_BLOCKS
1360 if this system has a stat structure declaring
1361 st_blksize and st_blocks.
1363 d_statfs (d_statfs.U):
1364 This variable conditionally defines the HAS_STATFS symbol, which
1365 indicates to the C program that the statfs() routine is available.
1367 d_statfsflags (d_statfs.U):
1368 This variable conditionally defines the HAS_STRUCT_STATFS_FLAGS
1369 symbol, which indicates to struct statfs from has f_flags member.
1370 This kind of struct statfs is coming from sys/mount.h (BSD),
1371 not from sys/statfs.h (SYSV).
1373 d_statvfs (d_statvfs.U):
1374 This variable conditionally defines the HAS_STATVFS symbol, which
1375 indicates to the C program that the statvfs() routine is available.
1377 d_stdio_cnt_lval (d_stdstdio.U):
1378 This variable conditionally defines STDIO_CNT_LVALUE if the
1379 FILE_cnt macro can be used as an lvalue.
1381 d_stdio_ptr_lval (d_stdstdio.U):
1382 This variable conditionally defines STDIO_PTR_LVALUE if the
1383 FILE_ptr macro can be used as an lvalue.
1385 d_stdio_stream_array (stdio_streams.U):
1386 This variable tells whether there is an array holding
1389 d_stdiobase (d_stdstdio.U):
1390 This variable conditionally defines USE_STDIO_BASE if this system
1391 has a FILE structure declaring a usable _base field (or equivalent)
1394 d_stdstdio (d_stdstdio.U):
1395 This variable conditionally defines USE_STDIO_PTR if this system
1396 has a FILE structure declaring usable _ptr and _cnt fields (or
1397 equivalent) in stdio.h.
1399 d_store64 (dbm64.U):
1400 This variable conditionally defines the HAS_STORE64 symbol, which
1401 indicates to the C program that the store64() routine is available.
1403 d_strchr (d_strchr.U):
1404 This variable conditionally defines HAS_STRCHR if strchr() and
1405 strrchr() are available for string searching.
1407 d_strcoll (d_strcoll.U):
1408 This variable conditionally defines HAS_STRCOLL if strcoll() is
1409 available to compare strings using collating information.
1411 d_strctcpy (d_strctcpy.U):
1412 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1413 indicates to the C program that this C compiler knows how to copy
1416 d_strerrm (d_strerror.U):
1417 This variable holds what Strerrr is defined as to translate an error
1418 code condition into an error message string. It could be 'strerror'
1419 or a more complex macro emulating strrror with sys_errlist[], or the
1420 "unknown" string when both strerror and sys_errlist are missing.
1422 d_strerror (d_strerror.U):
1423 This variable conditionally defines HAS_STRERROR if strerror() is
1424 available to translate error numbers to strings.
1426 d_strtod (d_strtod.U):
1427 This variable conditionally defines the HAS_STRTOD symbol, which
1428 indicates to the C program that the strtod() routine is available
1429 to provide better numeric string conversion than atof().
1431 d_strtol (d_strtol.U):
1432 This variable conditionally defines the HAS_STRTOL symbol, which
1433 indicates to the C program that the strtol() routine is available
1434 to provide better numeric string conversion than atoi() and friends.
1436 d_strtoul (d_strtoul.U):
1437 This variable conditionally defines the HAS_STRTOUL symbol, which
1438 indicates to the C program that the strtoul() routine is available
1439 to provide conversion of strings to unsigned long.
1441 d_strxfrm (d_strxfrm.U):
1442 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1443 available to transform strings.
1445 d_suidsafe (d_dosuid.U):
1446 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1447 if setuid scripts can be secure. This test looks in /dev/fd/.
1449 d_symlink (d_symlink.U):
1450 This variable conditionally defines the HAS_SYMLINK symbol, which
1451 indicates to the C program that the symlink() routine is available
1452 to create symbolic links.
1454 d_syscall (d_syscall.U):
1455 This variable conditionally defines HAS_SYSCALL if syscall() is
1456 available call arbitrary system calls.
1458 d_sysconf (d_sysconf.U):
1459 This variable conditionally defines the HAS_SYSCONF symbol, which
1460 indicates to the C program that the sysconf() routine is available
1461 to determine system related limits and options.
1463 d_sysernlst (d_strerror.U):
1464 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1465 is available to translate error numbers to the symbolic name.
1467 d_syserrlst (d_strerror.U):
1468 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1469 available to translate error numbers to strings.
1471 d_system (d_system.U):
1472 This variable conditionally defines HAS_SYSTEM if system() is
1473 available to issue a shell command.
1475 d_tcgetpgrp (d_tcgtpgrp.U):
1476 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1477 indicates to the C program that the tcgetpgrp() routine is available.
1478 to get foreground process group ID.
1480 d_tcsetpgrp (d_tcstpgrp.U):
1481 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1482 indicates to the C program that the tcsetpgrp() routine is available
1483 to set foreground process group ID.
1485 d_telldir64 (io64.U):
1486 This variable conditionally defines the HAS_TELLDIR64 symbol, which
1487 indicates to the C program that the telldir64() routine is available.
1489 d_telldir (d_readdir.U):
1490 This variable conditionally defines HAS_TELLDIR if telldir() is
1493 d_telldirproto (d_telldirproto.U):
1494 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1495 which indicates to the C program that the system provides
1496 a prototype for the telldir() function. Otherwise, it is
1497 up to the program to supply one.
1500 This variable conditionally defines the HAS_TIME symbol, which indicates
1501 that the time() routine exists. The time() routine is normaly
1502 provided on UNIX systems.
1504 d_times (d_times.U):
1505 This variable conditionally defines the HAS_TIMES symbol, which indicates
1506 that the times() routine exists. The times() routine is normaly
1507 provided on UNIX systems. You may have to include <sys/times.h>.
1509 d_tmpfile64 (stdio64.U):
1510 This variable conditionally defines the HAS_TMPFILE64 symbol, which
1511 indicates to the C program that the tmpfile64() routine is available.
1513 d_truncate64 (io64.U):
1514 This variable conditionally defines the HAS_TRUNCATE64 symbol, which
1515 indicates to the C program that the truncate64() routine is available.
1517 d_truncate (d_truncate.U):
1518 This variable conditionally defines HAS_TRUNCATE if truncate() is
1519 available to truncate files.
1521 d_tzname (d_tzname.U):
1522 This variable conditionally defines HAS_TZNAME if tzname[] is
1523 available to access timezone names.
1525 d_umask (d_umask.U):
1526 This variable conditionally defines the HAS_UMASK symbol, which
1527 indicates to the C program that the umask() routine is available.
1528 to set and get the value of the file creation mask.
1530 d_uname (d_gethname.U):
1531 This variable conditionally defines the HAS_UNAME symbol, which
1532 indicates to the C program that the uname() routine may be
1533 used to derive the host name.
1535 d_union_semun (d_union_semun.U):
1536 This variable conditionally defines HAS_UNION_SEMUN if the
1537 union semun is defined by including <sys/sem.h>.
1539 d_vendorlib (vendorlib.U):
1540 This variable conditionally defines PERL_VENDORLIB.
1542 d_vfork (d_vfork.U):
1543 This variable conditionally defines the HAS_VFORK symbol, which
1544 indicates the vfork() routine is available.
1546 d_void_closedir (d_closedir.U):
1547 This variable conditionally defines VOID_CLOSEDIR if closedir()
1548 does not return a value.
1550 d_voidsig (d_voidsig.U):
1551 This variable conditionally defines VOIDSIG if this system
1552 declares "void (*signal(...))()" in signal.h. The old way was to
1553 declare it as "int (*signal(...))()".
1555 d_voidtty (i_sysioctl.U):
1556 This variable conditionally defines USE_IOCNOTTY to indicate that the
1557 ioctl() call with TIOCNOTTY should be used to void tty association.
1558 Otherwise (on USG probably), it is enough to close the standard file
1559 decriptors and do a setpgrp().
1561 d_volatile (d_volatile.U):
1562 This variable conditionally defines the HASVOLATILE symbol, which
1563 indicates to the C program that this C compiler knows about the
1564 volatile declaration.
1566 d_vprintf (d_vprintf.U):
1567 This variable conditionally defines the HAS_VPRINTF symbol, which
1568 indicates to the C program that the vprintf() routine is available
1569 to printf with a pointer to an argument list.
1571 d_wait4 (d_wait4.U):
1572 This variable conditionally defines the HAS_WAIT4 symbol, which
1573 indicates the wait4() routine is available.
1575 d_waitpid (d_waitpid.U):
1576 This variable conditionally defines HAS_WAITPID if waitpid() is
1577 available to wait for child process.
1579 d_wcstombs (d_wcstombs.U):
1580 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1581 indicates to the C program that the wcstombs() routine is available
1582 to convert wide character strings to multibyte strings.
1584 d_wctomb (d_wctomb.U):
1585 This variable conditionally defines the HAS_WCTOMB symbol, which
1586 indicates to the C program that the wctomb() routine is available
1587 to convert a wide character to a multibyte.
1589 d_writev (d_writev.U):
1590 This variable conditionally defines the HAS_WRITEV symbol, which
1591 indicates to the C program that the writev() routine is available.
1594 This variable conditionally defines the symbol XENIX, which alerts
1595 the C program that it runs under Xenix.
1598 This variable is be used internally by Configure to determine the
1599 full pathname (if any) of the date program. After Configure runs,
1600 the value is reset to a plain "date" and is not useful.
1602 db_hashtype (i_db.U):
1603 This variable contains the type of the hash structure element
1604 in the <db.h> header file. In older versions of DB, it was
1605 int, while in newer ones it is u_int32_t.
1607 db_prefixtype (i_db.U):
1608 This variable contains the type of the prefix structure element
1609 in the <db.h> header file. In older versions of DB, it was
1610 int, while in newer ones it is size_t.
1612 defvoidused (voidflags.U):
1613 This variable contains the default value of the VOIDUSED symbol (15).
1615 direntrytype (i_dirent.U):
1616 This symbol is set to 'struct direct' or 'struct dirent' depending on
1617 whether dirent is available or not. You should use this pseudo type to
1618 portably declare your directory entries.
1621 This variable contains the extension that is to be used for the
1622 dynamically loaded modules that perl generaties.
1625 This variable contains the name of the dynamic loading file that
1626 will be used with the package.
1628 doublesize (doublesize.U):
1629 This variable contains the value of the DOUBLESIZE symbol, which
1630 indicates to the C program how many bytes there are in a double.
1632 drand01 (randfunc.U):
1633 Indicates the macro to be used to generate normalized
1634 random numbers. Uses randfunc, often divided by
1635 (double) (((unsigned long) 1 << randbits)) in order to
1636 normalize the result.
1637 In C programs, the macro 'Drand01' is mapped to drand01.
1639 dynamic_ext (Extensions.U):
1640 This variable holds a list of XS extension files we want to
1641 link dynamically into the package. It is used by Makefile.
1643 eagain (nblock_io.U):
1644 This variable bears the symbolic errno code set by read() when no
1645 data is present on the file and non-blocking I/O was enabled (otherwise,
1646 read() blocks naturally).
1649 This variable conditionally defines EBCDIC if this
1650 system uses EBCDIC encoding. Among other things, this
1651 means that the character ranges are not contiguous.
1655 This variable is be used internally by Configure to determine the
1656 full pathname (if any) of the echo program. After Configure runs,
1657 the value is reset to a plain "echo" and is not useful.
1660 This variable is be used internally by Configure to determine the
1661 full pathname (if any) of the egrep program. After Configure runs,
1662 the value is reset to a plain "egrep" and is not useful.
1665 This variable is defined but not used by Configure.
1666 The value is a plain '' and is not useful.
1669 When running under Eunice this variable contains a command which will
1670 convert a shell script to the proper form of text file for it to be
1671 executable by the shell. On other systems it is a no-op.
1674 This is an old synonym for _exe.
1677 This variable is be used internally by Configure to determine the
1678 full pathname (if any) of the expr program. After Configure runs,
1679 the value is reset to a plain "expr" and is not useful.
1681 extensions (Extensions.U):
1682 This variable holds a list of all extension files (both XS and
1683 non-xs linked into the package. It is propagated to Config.pm
1684 and is typically used to test whether a particular extesion
1687 fflushall (fflushall.U):
1688 This symbol, if defined, tells that to flush
1689 all pending stdio output one must loop through all
1690 the stdio file handles stored in an array and fflush them.
1691 Note that if fflushNULL is defined, fflushall will not
1692 even be probed for and will be left undefined.
1694 fflushNULL (fflushall.U):
1695 This symbol, if defined, tells that fflush(NULL) does flush
1696 all pending stdio output.
1699 This variable is defined but not used by Configure.
1700 The value is a plain '' and is not useful.
1702 firstmakefile (Unix.U):
1703 This variable defines the first file searched by make. On unix,
1704 it is makefile (then Makefile). On case-insensitive systems,
1705 it might be something else. This is only used to deal with
1706 convoluted make depend tricks.
1709 This variable is defined but not used by Configure.
1710 The value is a plain '' and is not useful.
1712 fpostype (fpostype.U):
1713 This variable defines Fpos_t to be something like fpost_t, long,
1714 uint, or whatever type is used to declare file positions in libc.
1716 freetype (mallocsrc.U):
1717 This variable contains the return type of free(). It is usually
1718 void, but occasionally int.
1721 This variable contains the full pathname to 'ar', whether or
1722 not the user has specified 'portability'. This is only used
1726 This variable contains the full pathname to 'csh', whether or
1727 not the user has specified 'portability'. This is only used
1728 in the compiled C program, and we assume that all systems which
1729 can share this executable will have the same full pathname to
1732 full_sed (Loc_sed.U):
1733 This variable contains the full pathname to 'sed', whether or
1734 not the user has specified 'portability'. This is only used
1735 in the compiled C program, and we assume that all systems which
1736 can share this executable will have the same full pathname to
1740 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1741 indicate whether the compiler is version 1 or 2. This is used in
1742 setting some of the default cflags. It is set to '' if not gcc.
1744 gidtype (gidtype.U):
1745 This variable defines Gid_t to be something like gid_t, int,
1746 ushort, or whatever type is used to declare the return type
1747 of getgid(). Typically, it is the type of group ids in the kernel.
1750 This variable holds the general path (space-separated) used to
1751 find libraries. It may contain directories that do not exist on
1752 this platform, libpth is the cleaned-up version.
1755 This variable is be used internally by Configure to determine the
1756 full pathname (if any) of the grep program. After Configure runs,
1757 the value is reset to a plain "grep" and is not useful.
1760 This variable contains a command that produces the text of the
1761 /etc/group file. This is normally "cat /etc/group", but can be
1762 "ypcat group" when NIS is used.
1764 groupstype (groupstype.U):
1765 This variable defines Groups_t to be something like gid_t, int,
1766 ushort, or whatever type is used for the second argument to
1767 getgroups() and setgroups(). Usually, this is the same as
1768 gidtype (gid_t), but sometimes it isn't.
1771 This variable is be used internally by Configure to determine the
1772 full pathname (if any) of the gzip program. After Configure runs,
1773 the value is reset to a plain "gzip" and is not useful.
1775 h_fcntl (h_fcntl.U):
1776 This is variable gets set in various places to tell i_fcntl that
1777 <fcntl.h> should be included.
1779 h_sysfile (h_sysfile.U):
1780 This is variable gets set in various places to tell i_sys_file that
1781 <sys/file.h> should be included.
1784 Gives the type of hints used for previous answers. May be one of
1785 "default", "recommended" or "previous".
1788 This variable contains a command that produces the text of the
1789 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1790 "ypcat hosts" when NIS is used.
1793 This variable contains a flag which will tell the C compiler and loader
1794 to produce a program running with a huge memory model. If the
1795 huge model is not supported, contains the flag to produce large
1796 model programs. It is up to the Makefile to use this.
1798 i_arpainet (i_arpainet.U):
1799 This variable conditionally defines the I_ARPA_INET symbol,
1800 and indicates whether a C program should include <arpa/inet.h>.
1802 i_bsdioctl (i_sysioctl.U):
1803 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1804 indicates to the C program that <sys/bsdioctl.h> exists and should
1808 This variable conditionally defines the I_DB symbol, and indicates
1809 whether a C program may include Berkeley's DB include file <db.h>.
1812 This variable conditionally defines the I_DBM symbol, which
1813 indicates to the C program that <dbm.h> exists and should
1816 i_dirent (i_dirent.U):
1817 This variable conditionally defines I_DIRENT, which indicates
1818 to the C program that it should include <dirent.h>.
1821 This variable conditionally defines the I_DLD symbol, which
1822 indicates to the C program that <dld.h> (GNU dynamic loading)
1823 exists and should be included.
1825 i_dlfcn (i_dlfcn.U):
1826 This variable conditionally defines the I_DLFCN symbol, which
1827 indicates to the C program that <dlfcn.h> exists and should
1830 i_fcntl (i_fcntl.U):
1831 This variable controls the value of I_FCNTL (which tells
1832 the C program to include <fcntl.h>).
1834 i_float (i_float.U):
1835 This variable conditionally defines the I_FLOAT symbol, and indicates
1836 whether a C program may include <float.h> to get symbols like DBL_MAX
1837 or DBL_MIN, i.e. machine dependent floating point values.
1840 This variable conditionally defines the I_GDBM symbol, which
1841 indicates to the C program that <gdbm.h> exists and should
1845 This variable conditionally defines the I_GRP symbol, and indicates
1846 whether a C program should include <grp.h>.
1848 i_inttypes (i_inttypes.U):
1849 This variable conditionally defines the I_INTTYPES symbol,
1850 and indicates whether a C program should include <inttypes.h>.
1852 i_limits (i_limits.U):
1853 This variable conditionally defines the I_LIMITS symbol, and indicates
1854 whether a C program may include <limits.h> to get symbols like WORD_BIT
1857 i_locale (i_locale.U):
1858 This variable conditionally defines the I_LOCALE symbol,
1859 and indicates whether a C program should include <locale.h>.
1861 i_machcthr (i_machcthr.U):
1862 This variable conditionally defines the I_MACH_CTHREADS symbol,
1863 and indicates whether a C program should include <mach/cthreads.h>.
1865 i_malloc (i_malloc.U):
1866 This variable conditionally defines the I_MALLOC symbol, and indicates
1867 whether a C program should include <malloc.h>.
1870 This variable conditionally defines the I_MATH symbol, and indicates
1871 whether a C program may include <math.h>.
1873 i_memory (i_memory.U):
1874 This variable conditionally defines the I_MEMORY symbol, and indicates
1875 whether a C program should include <memory.h>.
1877 i_mntent (i_mntent.U):
1878 This variable conditionally defines the I_MNTENT symbol, and indicates
1879 whether a C program should include <mntent.h>.
1882 This variable conditionally defines the I_NDBM symbol, which
1883 indicates to the C program that <ndbm.h> exists and should
1886 i_netdb (i_netdb.U):
1887 This variable conditionally defines the I_NETDB symbol, and indicates
1888 whether a C program should include <netdb.h>.
1890 i_neterrno (i_neterrno.U):
1891 This variable conditionally defines the I_NET_ERRNO symbol, which
1892 indicates to the C program that <net/errno.h> exists and should
1895 i_netinettcp (i_netinettcp.U):
1896 This variable conditionally defines the I_NETINET_TCP symbol,
1897 and indicates whether a C program should include <netinet/tcp.h>.
1900 This variable conditionally defines I_NETINET_IN, which indicates
1901 to the C program that it should include <netinet/in.h>. Otherwise,
1902 you may try <sys/in.h>.
1905 This variable conditionally defines the I_POLL symbol, and indicates
1906 whether a C program should include <poll.h>.
1908 i_pthread (i_pthread.U):
1909 This variable conditionally defines the I_PTHREADEAD symbol,
1910 and indicates whether a C program should include <pthread.h>.
1913 This variable conditionally defines I_PWD, which indicates
1914 to the C program that it should include <pwd.h>.
1916 i_rpcsvcdbm (i_dbm.U):
1917 This variable conditionally defines the I_RPCSVC_DBM symbol, which
1918 indicates to the C program that <rpcsvc/dbm.h> exists and should
1919 be included. Some System V systems might need this instead of <dbm.h>.
1922 This variable conditionally defines the I_SFIO symbol,
1923 and indicates whether a C program should include <sfio.h>.
1925 i_sgtty (i_termio.U):
1926 This variable conditionally defines the I_SGTTY symbol, which
1927 indicates to the C program that it should include <sgtty.h> rather
1930 i_shadow (i_shadow.U):
1931 This variable conditionally defines the I_SHADOW symbol, and indicates
1932 whether a C program should include <shadow.h>.
1934 i_socks (i_socks.U):
1935 This variable conditionally defines the I_SOCKS symbol, and indicates
1936 whether a C program should include <socks.h>.
1938 i_stdarg (i_varhdr.U):
1939 This variable conditionally defines the I_STDARG symbol, which
1940 indicates to the C program that <stdarg.h> exists and should
1943 i_stddef (i_stddef.U):
1944 This variable conditionally defines the I_STDDEF symbol, which
1945 indicates to the C program that <stddef.h> exists and should
1948 i_stdlib (i_stdlib.U):
1949 This variable conditionally defines the I_STDLIB symbol, which
1950 indicates to the C program that <stdlib.h> exists and should
1953 i_string (i_string.U):
1954 This variable conditionally defines the I_STRING symbol, which
1955 indicates that <string.h> should be included rather than <strings.h>.
1957 i_sysaccess (i_sysaccess.U):
1958 This variable conditionally defines the I_SYS_ACCESS symbol,
1959 and indicates whether a C program should include <sys/access.h>.
1961 i_sysdir (i_sysdir.U):
1962 This variable conditionally defines the I_SYS_DIR symbol, and indicates
1963 whether a C program should include <sys/dir.h>.
1965 i_sysfile (i_sysfile.U):
1966 This variable conditionally defines the I_SYS_FILE symbol, and indicates
1967 whether a C program should include <sys/file.h> to get R_OK and friends.
1969 i_sysfilio (i_sysioctl.U):
1970 This variable conditionally defines the I_SYS_FILIO symbol, which
1971 indicates to the C program that <sys/filio.h> exists and should
1972 be included in preference to <sys/ioctl.h>.
1975 This variable conditionally defines I_SYS_IN, which indicates
1976 to the C program that it should include <sys/in.h> instead of
1979 i_sysioctl (i_sysioctl.U):
1980 This variable conditionally defines the I_SYS_IOCTL symbol, which
1981 indicates to the C program that <sys/ioctl.h> exists and should
1984 i_sysmman (i_sysmman.U):
1985 This variable conditionally defines the I_SYS_MMAN symbol, and
1986 indicates whether a C program should include <sys/mman.h>.
1988 i_sysmount (i_sysmount.U):
1989 This variable conditionally defines the I_SYSMOUNT symbol,
1990 and indicates whether a C program should include <sys/mount.h>.
1992 i_sysndir (i_sysndir.U):
1993 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
1994 whether a C program should include <sys/ndir.h>.
1996 i_sysparam (i_sysparam.U):
1997 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
1998 whether a C program should include <sys/param.h>.
2000 i_sysresrc (i_sysresrc.U):
2001 This variable conditionally defines the I_SYS_RESOURCE symbol,
2002 and indicates whether a C program should include <sys/resource.h>.
2004 i_syssecrt (i_syssecrt.U):
2005 This variable conditionally defines the I_SYS_SECURITY symbol,
2006 and indicates whether a C program should include <sys/security.h>.
2008 i_sysselct (i_sysselct.U):
2009 This variable conditionally defines I_SYS_SELECT, which indicates
2010 to the C program that it should include <sys/select.h> in order to
2011 get the definition of struct timeval.
2013 i_syssockio (i_sysioctl.U):
2014 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2015 C program that socket ioctl codes may be found in <sys/sockio.h>
2016 instead of <sys/ioctl.h>.
2018 i_sysstat (i_sysstat.U):
2019 This variable conditionally defines the I_SYS_STAT symbol,
2020 and indicates whether a C program should include <sys/stat.h>.
2022 i_sysstatvfs (i_sysstatvfs.U):
2023 This variable conditionally defines the I_SYSSTATVFS symbol,
2024 and indicates whether a C program should include <sys/statvfs.h>.
2026 i_systime (i_time.U):
2027 This variable conditionally defines I_SYS_TIME, which indicates
2028 to the C program that it should include <sys/time.h>.
2030 i_systimek (i_time.U):
2031 This variable conditionally defines I_SYS_TIME_KERNEL, which
2032 indicates to the C program that it should include <sys/time.h>
2033 with KERNEL defined.
2035 i_systimes (i_systimes.U):
2036 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2037 whether a C program should include <sys/times.h>.
2039 i_systypes (i_systypes.U):
2040 This variable conditionally defines the I_SYS_TYPES symbol,
2041 and indicates whether a C program should include <sys/types.h>.
2043 i_sysuio (i_sysuio.U):
2044 This variable conditionally defines the I_SYSUIO symbol, and indicates
2045 whether a C program should include <sys/uio.h>.
2047 i_sysun (i_sysun.U):
2048 This variable conditionally defines I_SYS_UN, which indicates
2049 to the C program that it should include <sys/un.h> to get UNIX
2050 domain socket definitions.
2052 i_syswait (i_syswait.U):
2053 This variable conditionally defines I_SYS_WAIT, which indicates
2054 to the C program that it should include <sys/wait.h>.
2056 i_termio (i_termio.U):
2057 This variable conditionally defines the I_TERMIO symbol, which
2058 indicates to the C program that it should include <termio.h> rather
2061 i_termios (i_termio.U):
2062 This variable conditionally defines the I_TERMIOS symbol, which
2063 indicates to the C program that the POSIX <termios.h> file is
2067 This variable conditionally defines I_TIME, which indicates
2068 to the C program that it should include <time.h>.
2070 i_unistd (i_unistd.U):
2071 This variable conditionally defines the I_UNISTD symbol, and indicates
2072 whether a C program should include <unistd.h>.
2074 i_utime (i_utime.U):
2075 This variable conditionally defines the I_UTIME symbol, and indicates
2076 whether a C program should include <utime.h>.
2078 i_values (i_values.U):
2079 This variable conditionally defines the I_VALUES symbol, and indicates
2080 whether a C program may include <values.h> to get symbols like MAXLONG
2083 i_varargs (i_varhdr.U):
2084 This variable conditionally defines I_VARARGS, which indicates
2085 to the C program that it should include <varargs.h>.
2087 i_varhdr (i_varhdr.U):
2088 Contains the name of the header to be included to get va_dcl definition.
2089 Typically one of varargs.h or stdarg.h.
2091 i_vfork (i_vfork.U):
2092 This variable conditionally defines the I_VFORK symbol, and indicates
2093 whether a C program should include vfork.h.
2095 ignore_versioned_solibs (libs.U):
2096 This variable should be non-empty if non-versioned shared
2097 libraries (libfoo.so.x.y) are to be ignored (because they
2098 cannot be linked against).
2101 This variable must preceed the normal include path to get hte
2102 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2103 Value can be "" or "/bsd43" on mips.
2106 This variable is defined but not used by Configure.
2107 The value is a plain '' and is not useful.
2109 installarchlib (archlib.U):
2110 This variable is really the same as archlibexp but may differ on
2111 those systems using AFS. For extra portability, only this variable
2112 should be used in makefiles.
2115 This variable is the same as binexp unless AFS is running in which case
2116 the user is explicitely prompted for it. This variable should always
2117 be used in your makefiles for maximum portability.
2119 installman1dir (man1dir.U):
2120 This variable is really the same as man1direxp, unless you are using
2121 AFS in which case it points to the read/write location whereas
2122 man1direxp only points to the read-only access location. For extra
2123 portability, you should only use this variable within your makefiles.
2125 installman3dir (man3dir.U):
2126 This variable is really the same as man3direxp, unless you are using
2127 AFS in which case it points to the read/write location whereas
2128 man3direxp only points to the read-only access location. For extra
2129 portability, you should only use this variable within your makefiles.
2131 installprefix (installprefix.U):
2132 This variable holds the name of the directory below which
2133 "make install" will install the package. For most users, this
2134 is the same as prefix. However, it is useful for
2135 installing the software into a different (usually temporary)
2136 location after which it can be bundled up and moved somehow
2137 to the final location specified by prefix.
2139 installprefixexp (installprefix.U):
2140 This variable holds the full absolute path of installprefix
2141 with all ~-expansion done.
2143 installprivlib (privlib.U):
2144 This variable is really the same as privlibexp but may differ on
2145 those systems using AFS. For extra portability, only this variable
2146 should be used in makefiles.
2148 installscript (scriptdir.U):
2149 This variable is usually the same as scriptdirexp, unless you are on
2150 a system running AFS, in which case they may differ slightly. You
2151 should always use this variable within your makefiles for portability.
2153 installsitearch (sitearch.U):
2154 This variable is really the same as sitearchexp but may differ on
2155 those systems using AFS. For extra portability, only this variable
2156 should be used in makefiles.
2158 installsitelib (sitelib.U):
2159 This variable is really the same as sitelibexp but may differ on
2160 those systems using AFS. For extra portability, only this variable
2161 should be used in makefiles.
2163 installstyle (installstyle.U):
2164 This variable describes the "style" of the perl installation.
2165 This is intended to be useful for tools that need to
2166 manipulate entire perl distributions. Perl itself doesn't use
2167 this to find its libraries -- the library directories are
2168 stored directly in Config.pm. Currently, there are only two
2169 styles: "lib" and "lib/perl5". The default library locations
2170 (e.g. privlib, sitelib) are either $prefix/lib or
2171 $prefix/lib/perl5. The former is useful if $prefix is a
2172 directory dedicated to perl (e.g. /opt/perl), while the latter
2173 is useful if $prefix is shared by many packages, e.g. if
2175 This may later be extended to include other information, so
2176 be careful with pattern-matching on the results.
2177 For compatibility with perl5.005 and earlier, the default
2178 setting is based on whether or not $prefix contains the string
2181 installusrbinperl (instubperl.U):
2182 This variable tells whether Perl should be installed also as
2183 /usr/bin/perl in addition to
2186 installvendorlib (vendorlib.U):
2187 This variable is really the same as vendorlibexp but may differ on
2188 those systems using AFS. For extra portability, only this variable
2189 should be used in makefiles.
2191 intsize (intsize.U):
2192 This variable contains the value of the INTSIZE symbol, which
2193 indicates to the C program how many bytes there are in an int.
2195 known_extensions (Extensions.U):
2196 This variable holds a list of all XS extensions included in
2200 This variable is defined but not used by Configure.
2201 The value is a plain '' and is not useful.
2204 This variable contains a flag which will tell the C compiler and loader
2205 to produce a program running with a large memory model. It is up to
2206 the Makefile to use this.
2209 This variable indicates the program to be used to link
2210 libraries for dynamic loading. On some systems, it is 'ld'.
2211 On ELF systems, it should be $cc. Mostly, we'll try to respect
2212 the hint file setting.
2214 lddlflags (dlsrc.U):
2215 This variable contains any special flags that might need to be
2216 passed to $ld to create a shared library suitable for dynamic
2217 loading. It is up to the makefile to use it. For hpux, it
2218 should be '-b'. For sunos 4.1, it is empty.
2220 ldflags (ccflags.U):
2221 This variable contains any additional C loader flags desired by
2222 the user. It is up to the Makefile to use this.
2224 ldlibpthname (libperl.U):
2225 This variable holds the name of the shared library
2226 search path, often LD_LIBRARY_PATH. To get an empty
2227 string, the hints file must set this to 'none'.
2230 This variable is be used internally by Configure to determine the
2231 full pathname (if any) of the less program. After Configure runs,
2232 the value is reset to a plain "less" and is not useful.
2235 This is an old synonym for _a.
2238 This variable contains the location of the C library.
2240 libperl (libperl.U):
2241 The perl executable is obtained by linking perlmain.c with
2242 libperl, any static extensions (usually just DynaLoader),
2243 and any other libraries needed on this system. libperl
2244 is usually libperl.a, but can also be libperl.so.xxx if
2245 the user wishes to build a perl executable with a shared
2249 This variable holds the general path (space-separated) used to find
2250 libraries. It is intended to be used by other units.
2253 This variable holds the additional libraries we want to use.
2254 It is up to the Makefile to deal with it.
2256 libswanted (Myinit.U):
2257 This variable holds a list of all the libraries we want to
2258 search. The order is chosen to pick up the c library
2259 ahead of ucb or bsd libraries for SVR4.
2262 This variable is defined but not used by Configure.
2263 The value is a plain '' and is not useful.
2266 This variable is defined but not used by Configure.
2267 The value is a plain '' and is not useful.
2269 lkflags (ccflags.U):
2270 This variable contains any additional C partial linker flags desired by
2271 the user. It is up to the Makefile to use this.
2274 This variable is be used internally by Configure to determine the
2275 full pathname (if any) of the ln program. After Configure runs,
2276 the value is reset to a plain "ln" and is not useful.
2279 This variable holds the name of the command to make
2280 symbolic links (if they are supported). It can be used
2281 in the Makefile. It is either 'ln -s' or 'ln'
2283 locincpth (ccflags.U):
2284 This variable contains a list of additional directories to be
2285 searched by the compiler. The appropriate '-I' directives will
2286 be added to ccflags. This is intended to simplify setting
2287 local directories from the Configure command line.
2288 It's not much, but it parallels the loclibpth stuff in libpth.U.
2290 loclibpth (libpth.U):
2291 This variable holds the paths (space-separated) used to find local
2292 libraries. It is prepended to libpth, and is intended to be easily
2293 set from the command line.
2295 longdblsize (d_longdbl.U):
2296 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2297 indicates to the C program how many bytes there are in a long double,
2298 if this system supports long doubles.
2300 longlongsize (d_longlong.U):
2301 This variable contains the value of the LONGLONGSIZE symbol, which
2302 indicates to the C program how many bytes there are in a long long,
2303 if this system supports long long.
2305 longsize (intsize.U):
2306 This variable contains the value of the LONGSIZE symbol, which
2307 indicates to the C program how many bytes there are in a long.
2310 This variable is defined but not used by Configure.
2311 The value is a plain '' and is not useful.
2314 This variable is defined but not used by Configure.
2315 The value is a plain '' and is not useful.
2318 This variable is be used internally by Configure to determine the
2319 full pathname (if any) of the ls program. After Configure runs,
2320 the value is reset to a plain "ls" and is not useful.
2322 lseeksize (lseektype.U):
2323 This variable defines lseektype to be something like off_t, long,
2324 or whatever type is used to declare lseek offset's type in the
2325 kernel (which also appears to be lseek's return type).
2327 lseektype (lseektype.U):
2328 This variable defines lseektype to be something like off_t, long,
2329 or whatever type is used to declare lseek offset's type in the
2330 kernel (which also appears to be lseek's return type).
2333 This variable is defined but not used by Configure.
2334 The value is a plain '' and is not useful.
2337 This variable is defined but not used by Configure.
2338 The value is a plain '' and is not useful.
2341 This variable is be used internally by Configure to determine the
2342 full pathname (if any) of the make program. After Configure runs,
2343 the value is reset to a plain "make" and is not useful.
2345 make_set_make (make.U):
2346 Some versions of 'make' set the variable MAKE. Others do not.
2347 This variable contains the string to be included in Makefile.SH
2348 so that MAKE is set if needed, and not if not needed.
2349 Possible values are:
2350 make_set_make='#' # If your make program handles this for you,
2351 make_set_make="MAKE=$make" # if it doesn't.
2352 I used a comment character so that we can distinguish a
2353 'set' value (from a previous config.sh or Configure '-D' option)
2354 from an uncomputed value.
2356 mallocobj (mallocsrc.U):
2357 This variable contains the name of the malloc.o that this package
2358 generates, if that malloc.o is preferred over the system malloc.
2359 Otherwise the value is null. This variable is intended for generating
2360 Makefiles. See mallocsrc.
2362 mallocsrc (mallocsrc.U):
2363 This variable contains the name of the malloc.c that comes with
2364 the package, if that malloc.c is preferred over the system malloc.
2365 Otherwise the value is null. This variable is intended for generating
2368 malloctype (mallocsrc.U):
2369 This variable contains the kind of ptr returned by malloc and realloc.
2371 man1dir (man1dir.U):
2372 This variable contains the name of the directory in which manual
2373 source pages are to be put. It is the responsibility of the
2374 Makefile.SH to get the value of this into the proper command.
2375 You must be prepared to do the ~name expansion yourself.
2377 man1direxp (man1dir.U):
2378 This variable is the same as the man1dir variable, but is filename
2379 expanded at configuration time, for convenient use in makefiles.
2381 man1ext (man1dir.U):
2382 This variable contains the extension that the manual page should
2383 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2386 man3dir (man3dir.U):
2387 This variable contains the name of the directory in which manual
2388 source pages are to be put. It is the responsibility of the
2389 Makefile.SH to get the value of this into the proper command.
2390 You must be prepared to do the ~name expansion yourself.
2392 man3direxp (man3dir.U):
2393 This variable is the same as the man3dir variable, but is filename
2394 expanded at configuration time, for convenient use in makefiles.
2396 man3ext (man3dir.U):
2397 This variable contains the extension that the manual page should
2398 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2402 This variable is be used internally by Configure to determine the
2403 full pathname (if any) of the Mcc program. After Configure runs,
2404 the value is reset to a plain "Mcc" and is not useful.
2407 This variable contains a flag which will tell the C compiler and loader
2408 to produce a program running with a medium memory model. If the
2409 medium model is not supported, contains the flag to produce large
2410 model programs. It is up to the Makefile to use this.
2412 mips_type (usrinc.U):
2413 This variable holds the environment type for the mips system.
2414 Possible values are "BSD 4.3" and "System V".
2417 This variable is be used internally by Configure to determine the
2418 full pathname (if any) of the mkdir program. After Configure runs,
2419 the value is reset to a plain "mkdir" and is not useful.
2421 mmaptype (d_mmap.U):
2422 This symbol contains the type of pointer returned by mmap()
2423 (and simultaneously the type of the first argument).
2424 It can be 'void *' or 'caddr_t'.
2427 This variable contains the list of memory models supported by this
2428 system. Possible component values are none, split, unsplit, small,
2429 medium, large, and huge. The component values are space separated.
2431 modetype (modetype.U):
2432 This variable defines modetype to be something like mode_t,
2433 int, unsigned short, or whatever type is used to declare file
2434 modes for system calls.
2437 This variable is be used internally by Configure to determine the
2438 full pathname (if any) of the more program. After Configure runs,
2439 the value is reset to a plain "more" and is not useful.
2441 multiarch (multiarch.U):
2442 This variable conditionally defines the MULTIARCH symbol
2443 which signifies the presence of multiplatform files.
2444 This is normally set by hints files.
2447 This variable is defined but not used by Configure.
2448 The value is a plain '' and is not useful.
2450 myarchname (archname.U):
2451 This variable holds the architecture name computed by Configure in
2452 a previous run. It is not intended to be perused by any user and
2453 should never be set in a hint file.
2455 mydomain (myhostname.U):
2456 This variable contains the eventual value of the MYDOMAIN symbol,
2457 which is the domain of the host the program is going to run on.
2458 The domain must be appended to myhostname to form a complete host name.
2459 The dot comes with mydomain, and need not be supplied by the program.
2461 myhostname (myhostname.U):
2462 This variable contains the eventual value of the MYHOSTNAME symbol,
2463 which is the name of the host the program is going to run on.
2464 The domain is not kept with hostname, but must be gotten from mydomain.
2465 The dot comes with mydomain, and need not be supplied by the program.
2467 myuname (Oldconfig.U):
2468 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2469 pseudo variables assignments in the output are stripped, thank you. The
2470 whole thing is then lower-cased.
2473 This variable contains the '-n' flag if that is what causes the echo
2474 command to suppress newline. Otherwise it is null. Correct usage is
2475 $echo $n "prompt for a question: $c".
2477 netdb_hlen_type (netdbtype.U):
2478 This variable holds the type used for the 2nd argument to
2479 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2480 This is only useful if you have gethostbyaddr(), naturally.
2482 netdb_host_type (netdbtype.U):
2483 This variable holds the type used for the 1st argument to
2484 gethostbyaddr(). Usually, this is char * or void *, possibly
2485 with or without a const prefix.
2486 This is only useful if you have gethostbyaddr(), naturally.
2488 netdb_name_type (netdbtype.U):
2489 This variable holds the type used for the argument to
2490 gethostbyname(). Usually, this is char * or const char *.
2491 This is only useful if you have gethostbyname(), naturally.
2493 netdb_net_type (netdbtype.U):
2494 This variable holds the type used for the 1st argument to
2495 getnetbyaddr(). Usually, this is int or long.
2496 This is only useful if you have getnetbyaddr(), naturally.
2499 This variable is be used internally by Configure to determine the
2500 full pathname (if any) of the nm program. After Configure runs,
2501 the value is reset to a plain "nm" and is not useful.
2504 This variable holds the options that may be necessary for nm.
2506 nm_so_opt (usenm.U):
2507 This variable holds the options that may be necessary for nm
2508 to work on a shared library but that can not be used on an
2509 archive library. Currently, this is only used by Linux, where
2510 nm --dynamic is *required* to get symbols from an ELF library which
2511 has been stripped, but nm --dynamic is *fatal* on an archive library.
2512 Maybe Linux should just always set usenm=false.
2514 nonxs_ext (Extensions.U):
2515 This variable holds a list of all non-xs extensions included
2516 in the package. All of them will be built.
2519 This variable is be used internally by Configure to determine the
2520 full pathname (if any) of the nroff program. After Configure runs,
2521 the value is reset to a plain "nroff" and is not useful.
2523 o_nonblock (nblock_io.U):
2524 This variable bears the symbol value to be used during open() or fcntl()
2525 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2526 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2527 but that is only supported by some devices.
2530 This is an old synonym for _o.
2532 old_pthread_create_joinable (d_pthrattrj.U):
2533 This variable defines the constant to use for creating joinable
2534 (aka undetached) pthreads. Unused if pthread.h defines
2535 PTHREAD_CREATE_JOINABLE. If used, possible values are
2536 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2538 optimize (ccflags.U):
2539 This variable contains any optimizer/debugger flag that should be used.
2540 It is up to the Makefile to use it.
2542 orderlib (orderlib.U):
2543 This variable is "true" if the components of libraries must be ordered
2544 (with `lorder $* | tsort`) before placing them in an archive. Set to
2545 "false" if ranlib or ar can generate random libraries.
2547 osname (Oldconfig.U):
2548 This variable contains the operating system name (e.g. sunos,
2549 solaris, hpux, etc.). It can be useful later on for setting
2550 defaults. Any spaces are replaced with underscores. It is set
2551 to a null string if we can't figure it out.
2553 osvers (Oldconfig.U):
2554 This variable contains the operating system version (e.g.
2555 4.1.3, 5.2, etc.). It is primarily used for helping select
2556 an appropriate hints file, but might be useful elsewhere for
2557 setting defaults. It is set to '' if we can't figure it out.
2558 We try to be flexible about how much of the version number
2559 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2560 same for this package, hints files might just be os_4.0 or
2561 os_4.1, etc., not keeping separate files for each little release.
2563 package (package.U):
2564 This variable contains the name of the package being constructed.
2565 It is primarily intended for the use of later Configure units.
2568 This variable contains the name of the preferred pager on the system.
2569 Usual values are (the full pathnames of) more, less, pg, or cat.
2572 This variable contains a command that produces the text of the
2573 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2574 "ypcat passwd" when NIS is used.
2576 patchlevel (patchlevel.U):
2577 The patchlevel level of this package.
2578 The value of patchlevel comes from the patchlevel.h file.
2581 This is an old synonym for p_ in Head.U, the character
2582 used to separate elements in the command shell search PATH.
2585 This variable is defined but not used by Configure.
2586 The value is a plain '' and is not useful.
2588 perladmin (perladmin.U):
2589 Electronic mail address of the perl5 administrator.
2591 perlpath (perlpath.U):
2592 This variable contains the eventual value of the PERLPATH symbol,
2593 which contains the name of the perl interpreter to be used in
2594 shell scripts and in the "eval 'exec'" idiom.
2597 This variable is be used internally by Configure to determine the
2598 full pathname (if any) of the pg program. After Configure runs,
2599 the value is reset to a plain "pg" and is not useful.
2601 phostname (myhostname.U):
2602 This variable contains the eventual value of the PHOSTNAME symbol,
2603 which is a command that can be fed to popen() to get the host name.
2604 The program should probably not presume that the domain is or isn't
2607 pidtype (pidtype.U):
2608 This variable defines PIDTYPE to be something like pid_t, int,
2609 ushort, or whatever type is used to declare process ids in the kernel.
2612 Holds the private path used by Configure to find out the libraries.
2613 Its value is prepend to libpth. This variable takes care of special
2614 machines, like the mips. Usually, it should be empty.
2617 This variable is defined but not used by Configure.
2618 The value is a plain '' and is not useful.
2621 This variable is defined but not used by Configure.
2622 The value is a plain '' and is not useful.
2625 This variable holds the name of the directory below which the
2626 user will install the package. Usually, this is /usr/local, and
2627 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2628 man pages in /usr/local/man, etc. It is only used to set defaults
2629 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2631 prefixexp (prefix.U):
2632 This variable holds the full absolute path of the directory below
2633 which the user will install the package. Derived from prefix.
2635 privlib (privlib.U):
2636 This variable contains the eventual value of the PRIVLIB symbol,
2637 which is the name of the private library for this package. It may
2638 have a ~ on the front. It is up to the makefile to eventually create
2639 this directory while performing installation (with ~ substitution).
2641 privlibexp (privlib.U):
2642 This variable is the ~name expanded version of privlib, so that you
2643 may use it directly in Makefiles or shell scripts.
2645 prototype (prototype.U):
2646 This variable holds the eventual value of CAN_PROTOTYPE, which
2647 indicates the C compiler can handle funciton prototypes.
2649 ptrsize (ptrsize.U):
2650 This variable contains the value of the PTRSIZE symbol, which
2651 indicates to the C program how many bytes there are in a pointer.
2653 randbits (randfunc.U):
2654 Indicates how many bits are produced by the function used to
2655 generate normalized random numbers.
2657 randfunc (randfunc.U):
2658 Indicates the name of the random number function to use.
2659 Values include drand48, random, and rand. In C programs,
2660 the 'Drand01' macro is defined to generate uniformly distributed
2661 random numbers over the range [0., 1.[ (see drand01 and nrand).
2663 randseedtype (randfunc.U):
2664 Indicates the type of the argument of the seedfunc.
2666 ranlib (orderlib.U):
2667 This variable is set to the pathname of the ranlib program, if it is
2668 needed to generate random libraries. Set to ":" if ar can generate
2669 random libraries or if random libraries are not supported
2671 rd_nodata (nblock_io.U):
2672 This variable holds the return code from read() when no data is
2673 present. It should be -1, but some systems return 0 when O_NDELAY is
2674 used, which is a shame because you cannot make the difference between
2675 no data and an EOF.. Sigh!
2678 This variable is be used internally by Configure to determine the
2679 full pathname (if any) of the rm program. After Configure runs,
2680 the value is reset to a plain "rm" and is not useful.
2683 This variable is defined but not used by Configure.
2684 The value is a plain '' and is not useful.
2687 This variable contains 'true' or 'false' depending whether the
2688 nm extraction should be performed or not, according to the value
2689 of usenm and the flags on the Configure command line.
2691 sched_yield (d_pthread_y.U):
2692 This variable defines the way to yield the execution
2693 of the current thread.
2695 scriptdir (scriptdir.U):
2696 This variable holds the name of the directory in which the user wants
2697 to put publicly scripts for the package in question. It is either
2698 the same directory as for binaries, or a special one that can be
2699 mounted across different architectures, like /usr/share. Programs
2700 must be prepared to deal with ~name expansion.
2702 scriptdirexp (scriptdir.U):
2703 This variable is the same as scriptdir, but is filename expanded
2704 at configuration time, for programs not wanting to bother with it.
2707 This variable is be used internally by Configure to determine the
2708 full pathname (if any) of the sed program. After Configure runs,
2709 the value is reset to a plain "sed" and is not useful.
2711 seedfunc (randfunc.U):
2712 Indicates the random number generating seed function.
2713 Values include srand48, srandom, and srand.
2715 selectminbits (selectminbits.U):
2716 This variable holds the minimum number of bits operated by select.
2717 That is, if you do select(n, ...), how many bits at least will be
2718 cleared in the masks if some activity is detected. Usually this
2719 is either n or 32*ceil(n/32), especially many little-endians do
2720 the latter. This is only useful if you have select(), naturally.
2722 selecttype (selecttype.U):
2723 This variable holds the type used for the 2nd, 3rd, and 4th
2724 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
2725 is defined, and 'int *' otherwise. This is only useful if you
2726 have select(), naturally.
2729 This variable is defined but not used by Configure.
2730 The value is a plain '' and is not useful.
2733 This variable contains the full pathname of the shell used
2734 on this system to execute Bourne shell scripts. Usually, this will be
2735 /bin/sh, though it's possible that some systems will have /bin/ksh,
2736 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
2738 This unit comes before Options.U, so you can't set sh with a '-D'
2739 option, though you can override this (and startsh)
2740 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
2743 This variable is defined but not used by Configure.
2744 The value is a plain '' and is not useful.
2746 sharpbang (spitshell.U):
2747 This variable contains the string #! if this system supports that
2750 shmattype (d_shmat.U):
2751 This symbol contains the type of pointer returned by shmat().
2752 It can be 'void *' or 'char *'.
2754 shortsize (intsize.U):
2755 This variable contains the value of the SHORTSIZE symbol which
2756 indicates to the C program how many bytes there are in a short.
2758 shrpenv (libperl.U):
2759 If the user builds a shared libperl.so, then we need to tell the
2760 'perl' executable where it will be able to find the installed libperl.so.
2761 One way to do this on some systems is to set the environment variable
2762 LD_RUN_PATH to the directory that will be the final location of the
2763 shared libperl.so. The makefile can use this with something like
2764 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
2766 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
2769 See the main perl Makefile.SH for actual working usage.
2770 Alternatively, we might be able to use a command line option such
2771 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
2772 $archlibexp/CORE (Linux).
2774 shsharp (spitshell.U):
2775 This variable tells further Configure units whether your sh can
2778 sig_count (sig_name.U):
2779 This variable holds a number larger than the largest valid
2780 signal number. This is usually the same as the NSIG macro.
2782 sig_name (sig_name.U):
2783 This variable holds the signal names, space separated. The leading
2784 SIG in signal name is removed. A ZERO is prepended to the
2785 list. This is currently not used.
2787 sig_name_init (sig_name.U):
2788 This variable holds the signal names, enclosed in double quotes and
2789 separated by commas, suitable for use in the SIG_NAME definition
2790 below. A "ZERO" is prepended to the list, and the list is
2791 terminated with a plain 0. The leading SIG in signal names
2792 is removed. See sig_num.
2794 sig_num (sig_name.U):
2795 This variable holds the signal numbers, space separated. A ZERO is
2796 prepended to the list (corresponding to the fake SIGZERO), and
2797 the list is terminated with a 0. Those numbers correspond to
2798 the value of the signal listed in the same place within the
2801 sig_num_init (sig_name.U):
2802 This variable holds the signal numbers, enclosed in double quotes and
2803 separated by commas, suitable for use in the SIG_NUM definition
2804 below. A "ZERO" is prepended to the list, and the list is
2805 terminated with a plain 0.
2807 signal_t (d_voidsig.U):
2808 This variable holds the type of the signal handler (void or int).
2810 sitearch (sitearch.U):
2811 This variable contains the eventual value of the SITEARCH symbol,
2812 which is the name of the private library for this package. It may
2813 have a ~ on the front. It is up to the makefile to eventually create
2814 this directory while performing installation (with ~ substitution).
2816 sitearchexp (sitearch.U):
2817 This variable is the ~name expanded version of sitearch, so that you
2818 may use it directly in Makefiles or shell scripts.
2820 sitelib (sitelib.U):
2821 This variable contains the eventual value of the SITELIB symbol,
2822 which is the name of the private library for this package. It may
2823 have a ~ on the front. It is up to the makefile to eventually create
2824 this directory while performing installation (with ~ substitution).
2826 sitelibexp (sitelib.U):
2827 This variable is the ~name expanded version of sitelib, so that you
2828 may use it directly in Makefiles or shell scripts.
2830 siteprefix (siteprefix.U):
2831 This variable holds the full absolute path of the directory below
2832 which the user will install add-on packages.
2834 siteprefixexp (siteprefix.U):
2835 This variable holds the full absolute path of the directory below
2836 which the user will install add-on packages. Derived from siteprefix.
2838 sizetype (sizetype.U):
2839 This variable defines sizetype to be something like size_t,
2840 unsigned long, or whatever type is used to declare length
2841 parameters for string functions.
2844 This variable is defined but not used by Configure.
2845 The value is a plain '' and is not useful.
2848 This variable is defined but not used by Configure.
2849 The value is a plain '' and is not useful.
2852 This variable contains a flag which will tell the C compiler and loader
2853 to produce a program running with a small memory model. It is up to
2854 the Makefile to use this.
2857 This variable holds the extension used to identify shared libraries
2858 (also known as shared objects) on the system. Usually set to 'so'.
2860 sockethdr (d_socket.U):
2861 This variable has any cpp '-I' flags needed for socket support.
2863 socketlib (d_socket.U):
2864 This variable has the names of any libraries needed for socket support.
2867 This variable is be used internally by Configure to determine the
2868 full pathname (if any) of the sort program. After Configure runs,
2869 the value is reset to a plain "sort" and is not useful.
2871 spackage (package.U):
2872 This variable contains the name of the package being constructed,
2873 with the first letter uppercased, i.e. suitable for starting
2876 spitshell (spitshell.U):
2877 This variable contains the command necessary to spit out a runnable
2878 shell on this system. It is either cat or a grep '-v' for # comments.
2881 This variable contains a flag which will tell the C compiler and loader
2882 to produce a program that will run in separate I and D space, for those
2883 machines that support separation of instruction and data space. It is
2884 up to the Makefile to use this.
2887 This variable holds the path to the package source. It is up to
2888 the Makefile to use this variable and set VPATH accordingly to
2889 find the sources remotely.
2891 ssizetype (ssizetype.U):
2892 This variable defines ssizetype to be something like ssize_t,
2893 long or int. It is used by functions that return a count
2894 of bytes or an error condition. It must be a signed type.
2895 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
2897 startperl (startperl.U):
2898 This variable contains the string to put on the front of a perl
2899 script to make sure (hopefully) that it runs with perl and not some
2900 shell. Of course, that leading line must be followed by the classical
2902 eval 'exec perl -S $0 ${1+"$@"}'
2903 if $running_under_some_shell;
2904 to guarantee perl startup should the shell execute the script. Note
2905 that this magic incatation is not understood by csh.
2907 startsh (startsh.U):
2908 This variable contains the string to put on the front of a shell
2909 script to make sure (hopefully) that it runs with sh and not some
2912 static_ext (Extensions.U):
2913 This variable holds a list of XS extension files we want to
2914 link statically into the package. It is used by Makefile.
2916 stdchar (stdchar.U):
2917 This variable conditionally defines STDCHAR to be the type of char
2918 used in stdio.h. It has the values "unsigned char" or "char".
2920 stdio_base (d_stdstdio.U):
2921 This variable defines how, given a FILE pointer, fp, to access the
2922 _base field (or equivalent) of stdio.h's FILE structure. This will
2923 be used to define the macro FILE_base(fp).
2925 stdio_bufsiz (d_stdstdio.U):
2926 This variable defines how, given a FILE pointer, fp, to determine
2927 the number of bytes store in the I/O buffer pointer to by the
2928 _base field (or equivalent) of stdio.h's FILE structure. This will
2929 be used to define the macro FILE_bufsiz(fp).
2931 stdio_cnt (d_stdstdio.U):
2932 This variable defines how, given a FILE pointer, fp, to access the
2933 _cnt field (or equivalent) of stdio.h's FILE structure. This will
2934 be used to define the macro FILE_cnt(fp).
2936 stdio_filbuf (d_stdstdio.U):
2937 This variable defines how, given a FILE pointer, fp, to tell
2938 stdio to refill it's internal buffers (?). This will
2939 be used to define the macro FILE_filbuf(fp).
2941 stdio_ptr (d_stdstdio.U):
2942 This variable defines how, given a FILE pointer, fp, to access the
2943 _ptr field (or equivalent) of stdio.h's FILE structure. This will
2944 be used to define the macro FILE_ptr(fp).
2946 stdio_stream_array (stdio_streams.U):
2947 This variable tells the name of the array holding the stdio streams.
2948 Usual values include _iob, __iob, and __sF.
2950 strings (i_string.U):
2951 This variable holds the full path of the string header that will be
2952 used. Typically /usr/include/string.h or /usr/include/strings.h.
2955 This variable is defined but not used by Configure.
2956 The value is a plain '' and is not useful.
2958 subversion (patchlevel.U):
2959 The subversion level of this package.
2960 The value of subversion comes from the patchlevel.h file.
2961 This is unique to perl.
2964 This variable holds the place where the manual is located on this
2965 system. It is not the place where the user wants to put his manual
2966 pages. Rather it is the place where Configure may look to find manual
2967 for unix commands (section 1 of the manual usually). See mansrc.
2970 This variable is defined but not used by Configure.
2971 The value is a plain '' and is not useful.
2974 This variable is defined but not used by Configure.
2975 The value is a plain '' and is not useful.
2978 This variable is defined but not used by Configure.
2979 The value is a plain '' and is not useful.
2982 This variable is defined but not used by Configure.
2983 The value is a plain '' and is not useful.
2986 This variable is be used internally by Configure to determine the
2987 full pathname (if any) of the test program. After Configure runs,
2988 the value is reset to a plain "test" and is not useful.
2990 timeincl (i_time.U):
2991 This variable holds the full path of the included time header(s).
2993 timetype (d_time.U):
2994 This variable holds the type returned by time(). It can be long,
2995 or time_t on BSD sites (in which case <sys/types.h> should be
2996 included). Anyway, the type Time_t should be used.
2999 This variable is be used internally by Configure to determine the
3000 full pathname (if any) of the touch program. After Configure runs,
3001 the value is reset to a plain "touch" and is not useful.
3004 This variable is be used internally by Configure to determine the
3005 full pathname (if any) of the tr program. After Configure runs,
3006 the value is reset to a plain "tr" and is not useful.
3009 This variable contains the value to be passed to the tr(1)
3010 command to transliterate a newline. Typical values are
3011 '\012' and '\n'. This is needed for EBCDIC systems where
3012 newline is not necessarily '\012'.
3015 This variable is defined but not used by Configure.
3016 The value is a plain '' and is not useful.
3018 uidtype (uidtype.U):
3019 This variable defines Uid_t to be something like uid_t, int,
3020 ushort, or whatever type is used to declare user ids in the kernel.
3023 This variable is be used internally by Configure to determine the
3024 full pathname (if any) of the uname program. After Configure runs,
3025 the value is reset to a plain "uname" and is not useful.
3028 This variable is be used internally by Configure to determine the
3029 full pathname (if any) of the uniq program. After Configure runs,
3030 the value is reset to a plain "uniq" and is not useful.
3032 use64bits (use64bits.U):
3033 This variable conditionally defines the USE_64_BITS symbol,
3034 and indicates that explicit 64-bit interfaces should be used
3038 This variable indicates if the the system supports dynamic
3039 loading of some sort. See also dlsrc and dlobj.
3041 usemultiplicity (usemultiplicity.U):
3042 This variable conditionally defines the MULTIPLICITY symbol,
3043 and indicates that Perl should be built to use multiplicity.
3045 usemymalloc (mallocsrc.U):
3046 This variable contains y if the malloc that comes with this package
3047 is desired over the system's version of malloc. People often include
3048 special versions of malloc for effiency, but such versions are often
3049 less portable. See also mallocsrc and mallocobj.
3050 If this is 'y', then -lmalloc is removed from $libs.
3053 This variable contains 'true' or 'false' depending whether the
3054 nm extraction is wanted or not.
3056 useopcode (Extensions.U):
3057 This variable holds either 'true' or 'false' to indicate
3058 whether the Opcode extension should be used. The sole
3059 use for this currently is to allow an easy mechanism
3060 for users to skip the Opcode extension from the Configure
3063 useperlio (useperlio.U):
3064 This variable conditionally defines the USE_PERLIO symbol,
3065 and indicates that the PerlIO abstraction should be
3068 useposix (Extensions.U):
3069 This variable holds either 'true' or 'false' to indicate
3070 whether the POSIX extension should be used. The sole
3071 use for this currently is to allow an easy mechanism
3072 for hints files to indicate that POSIX will not compile
3073 on a particular system.
3076 This variable is set to true when the user agrees to use sfio.
3077 It is set to false when sfio is not available or when the user
3078 explicitely requests not to use sfio. It is here primarily so
3079 that command-line settings can override the auto-detection of
3080 d_sfio without running into a "WHOA THERE".
3082 useshrplib (libperl.U):
3083 This variable is set to 'yes' if the user wishes
3084 to build a shared libperl, and 'no' otherwise.
3086 usesocks (usesocks.U):
3087 This variable conditionally defines the USE_SOCKS symbol,
3088 and indicates that Perl should be built to use SOCKS.
3090 usethreads (usethreads.U):
3091 This variable conditionally defines the USE_THREADS symbol,
3092 and indicates that Perl should be built to use threads.
3094 usevendorprefix (vendorprefix.U):
3095 This variable tells whether the vendorprefix
3096 and consequently other vendor* paths are in use.
3098 usevfork (d_vfork.U):
3099 This variable is set to true when the user accepts to use vfork.
3100 It is set to false when no vfork is available or when the user
3101 explicitely requests not to use vfork.
3104 This variable holds the path of the include files, which is
3105 usually /usr/include. It is mainly used by other Configure units.
3108 This variable is defined but not used by Configure.
3109 The value is a plain '' and is not useful.
3111 vendorlib (vendorlib.U):
3112 This variable contains the eventual value of the VENDORLIB symbol,
3113 which is the name of the private library for this package. It may
3114 have a ~ on the front. It is up to the makefile to eventually create
3115 this directory while performing installation (with ~ substitution).
3116 Vendors who distribute perl binaries may place their own
3117 extensions and modules in this directory.
3119 vendorlibexp (vendorlib.U):
3120 This variable is the ~name expanded version of vendorlib, so that you
3121 may use it directly in Makefiles or shell scripts.
3123 vendorprefix (vendorprefix.U):
3124 This variable holds the full absolute path of the directory below
3125 which the vendor will install add-on packages.
3127 vendorprefixexp (vendorprefix.U):
3128 This variable holds the full absolute path of the directory below
3129 which the vendor will install add-on packages. Derived from vendorprefix.
3131 version (patchlevel.U):
3132 The full version number of this package. This combines
3133 baserev, patchlevel, and subversion to get the full
3134 version number, including any possible subversions. Care
3135 is taken to use the C locale in order to get something
3136 like 5.004 instead of 5,004. This is unique to perl.
3139 This variable is defined but not used by Configure.
3140 The value is a plain '' and is not useful.
3142 voidflags (voidflags.U):
3143 This variable contains the eventual value of the VOIDFLAGS symbol,
3144 which indicates how much support of the void type is given by this
3145 compiler. See VOIDFLAGS for more info.
3148 This variable holds extra path (space-separated) used to find
3149 libraries on this platform, for example CPU-specific libraries
3150 (on multi-CPU platforms) may be listed here.
3153 This variable is defined but not used by Configure.
3154 The value is a plain '' and is not useful.
3157 This variable is be used internally by Configure to determine the
3158 full pathname (if any) of the zip program. After Configure runs,
3159 the value is reset to a plain "zip" and is not useful.