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1This file contains a description of all the shell variables whose value is
2determined by the Configure script. Variables intended for use in C
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3programs (e.g. I_UNISTD) are already described in config_h.SH. [`configpm'
4generates pod documentation for Config.pm from this file--please try to keep
5the formatting regular.]
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7_a (Unix.U):
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'.
11
12_exe (Unix.U):
13 This variable defines the extension used for executable files.
14 For unix it is empty. Other possible values include '.exe'.
15
16_o (Unix.U):
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'.
20
21afs (afs.U):
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
25 what you are doing.
26
27alignbytes (alignbytes.U):
28 This variable holds the number of bytes required to align a
29 double. Usual values are 2, 4 and 8.
30
31ansi2knr (ansi2knr.U):
32 This variable is set if the user needs to run ansi2knr.
33 Currently, this is not supported, so we just abort.
34
35aphostname (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.
39
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40api_revision (patchlevel.U):
41 The three variables, api_revision, api_version, and
42 api_subversion, specify the version of the oldest perl binary
43 compatible with the present perl. In a full version string
44 such as '5.6.1', api_revision is the '5'.
45 Prior to 5.5.640, the format was a floating point number,
46 like 5.00563.
47 perl.c:incpush() and lib/lib.pm will automatically search in
48 $sitelib/.. for older directories back to the limit specified
49 by these api_ variables. This is only useful if you have a
50 perl library directory tree structured like the default one.
51 See INSTALL for how this works. The versioned site_perl
52 directory was introduced in 5.005, so that is the lowest
53 possible value. The version list appropriate for the current
54 system is determined in inc_version_list.U.
55 XXX To do: Since compatibility can depend on compile time
56 options (such as bincompat, longlong, etc.) it should
57 (perhaps) be set by Configure, but currently it isn't.
58 Currently, we read a hard-wired value from patchlevel.h.
59 Perhaps what we ought to do is take the hard-wired value from
60 patchlevel.h but then modify it if the current Configure
61 options warrant. patchlevel.h then would use an #ifdef guard.
62
63api_subversion (patchlevel.U):
64 The three variables, api_revision, api_version, and
65 api_subversion, specify the version of the oldest perl binary
66 compatible with the present perl. In a full version string
67 such as '5.6.1', api_subversion is the '1'. See api_revision for
68 full details.
69
70api_version (patchlevel.U):
71 The three variables, api_revision, api_version, and
72 api_subversion, specify the version of the oldest perl binary
73 compatible with the present perl. In a full version string
74 such as '5.6.1', api_version is the '6'. See api_revision for
75 full details. As a special case, 5.5.0 is rendered in the
76 old-style as 5.005. (In the 5.005_0x maintenance series,
77 this was the only versioned directory in $sitelib.)
78
79api_versionstring (patchlevel.U):
80 This variable combines api_revision, api_version, and
81 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
82 for use as a directory name. This is filesystem dependent.
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83
84ar (Loc.U):
5bf26616 85 This variable is used internally by Configure to determine the
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86 full pathname (if any) of the ar program. After Configure runs,
87 the value is reset to a plain "ar" and is not useful.
88
89archlib (archlib.U):
90 This variable holds the name of the directory in which the user wants
91 to put architecture-dependent public library files for $package.
92 It is most often a local directory such as /usr/local/lib.
93 Programs using this variable must be prepared to deal
94 with filename expansion.
95
96archlibexp (archlib.U):
97 This variable is the same as the archlib variable, but is
98 filename expanded at configuration time, for convenient use.
99
100archname64 (use64bits.U):
101 This variable is used for the 64-bitness part of $archname.
102
103archname (archname.U):
104 This variable is a short name to characterize the current
105 architecture. It is used mainly to construct the default archlib.
106
107archobjs (Unix.U):
108 This variable defines any additional objects that must be linked
109 in with the program on this architecture. On unix, it is usually
110 empty. It is typically used to include emulations of unix calls
111 or other facilities. For perl on OS/2, for example, this would
112 include os2/os2.obj.
113
114awk (Loc.U):
5bf26616 115 This variable is used internally by Configure to determine the
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116 full pathname (if any) of the awk program. After Configure runs,
117 the value is reset to a plain "awk" and is not useful.
118
119baserev (baserev.U):
120 The base revision level of this package, from the .package file.
121
122bash (Loc.U):
123 This variable is defined but not used by Configure.
124 The value is a plain '' and is not useful.
125
126bin (bin.U):
127 This variable holds the name of the directory in which the user wants
128 to put publicly executable images for the package in question. It
129 is most often a local directory such as /usr/local/bin. Programs using
130 this variable must be prepared to deal with ~name substitution.
131
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132bincompat5005 (bincompat5005.U):
133 This variable contains y if Perl 5.006 should be binary-compatible
134 with Perl 5.005.
135
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136binexp (bin.U):
137 This is the same as the bin variable, but is filename expanded at
138 configuration time, for use in your makefiles.
139
140bison (Loc.U):
141 This variable is defined but not used by Configure.
142 The value is a plain '' and is not useful.
143
144byacc (Loc.U):
5bf26616 145 This variable is used internally by Configure to determine the
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146 full pathname (if any) of the byacc program. After Configure runs,
147 the value is reset to a plain "byacc" and is not useful.
148
149byteorder (byteorder.U):
150 This variable holds the byte order. In the following, larger digits
151 indicate more significance. The variable byteorder is either 4321
152 on a big-endian machine, or 1234 on a little-endian, or 87654321
153 on a Cray ... or 3412 with weird order !
154
155c (n.U):
156 This variable contains the \c string if that is what causes the echo
157 command to suppress newline. Otherwise it is null. Correct usage is
158 $echo $n "prompt for a question: $c".
159
160castflags (d_castneg.U):
161 This variable contains a flag that precise difficulties the
162 compiler has casting odd floating values to unsigned long:
163 0 = ok
164 1 = couldn't cast < 0
165 2 = couldn't cast >= 0x80000000
166 4 = couldn't cast in argument expression list
167
168cat (Loc.U):
5bf26616 169 This variable is used internally by Configure to determine the
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170 full pathname (if any) of the cat program. After Configure runs,
171 the value is reset to a plain "cat" and is not useful.
172
173cc (cc.U):
174 This variable holds the name of a command to execute a C compiler which
175 can resolve multiple global references that happen to have the same
176 name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'.
177
178cccdlflags (dlsrc.U):
179 This variable contains any special flags that might need to be
180 passed with 'cc -c' to compile modules to be used to create a shared
181 library that will be used for dynamic loading. For hpux, this
182 should be +z. It is up to the makefile to use it.
183
184ccdlflags (dlsrc.U):
185 This variable contains any special flags that might need to be
186 passed to cc to link with a shared library for dynamic loading.
187 It is up to the makefile to use it. For sunos 4.1, it should
188 be empty.
189
190ccflags (ccflags.U):
191 This variable contains any additional C compiler flags desired by
192 the user. It is up to the Makefile to use this.
193
194ccsymbols (Cppsym.U):
195 The variable contains the symbols defined by the C compiler alone.
196 The symbols defined by cpp or by cc when it calls cpp are not in
197 this list, see cppsymbols and cppccsymbols.
198 The list is a space-separated list of symbol=value tokens.
199
200cf_by (cf_who.U):
201 Login name of the person who ran the Configure script and answered the
202 questions. This is used to tag both config.sh and config_h.SH.
203
204cf_email (cf_email.U):
205 Electronic mail address of the person who ran Configure. This can be
206 used by units that require the user's e-mail, like MailList.U.
207
208cf_time (cf_who.U):
209 Holds the output of the "date" command when the configuration file was
210 produced. This is used to tag both config.sh and config_h.SH.
211
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212charsize (charsize.U):
213 This variable contains the value of the CHARSIZE symbol, which
214 indicates to the C program how many bytes there are in a character.
215
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216chgrp (Loc.U):
217 This variable is defined but not used by Configure.
218 The value is a plain '' and is not useful.
219
220chmod (Loc.U):
221 This variable is defined but not used by Configure.
222 The value is a plain '' and is not useful.
223
224chown (Loc.U):
225 This variable is defined but not used by Configure.
226 The value is a plain '' and is not useful.
227
228clocktype (d_times.U):
229 This variable holds the type returned by times(). It can be long,
230 or clock_t on BSD sites (in which case <sys/types.h> should be
231 included).
232
233comm (Loc.U):
5bf26616 234 This variable is used internally by Configure to determine the
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235 full pathname (if any) of the comm program. After Configure runs,
236 the value is reset to a plain "comm" and is not useful.
237
238compress (Loc.U):
239 This variable is defined but not used by Configure.
240 The value is a plain '' and is not useful.
241
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242CONFIGDOTSH (Oldsyms.U):
243 This is set to 'true' in config.sh so that a shell script
244 sourcing config.sh can tell if it has been sourced already.
245
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246contains (contains.U):
247 This variable holds the command to do a grep with a proper return
248 status. On most sane systems it is simply "grep". On insane systems
249 it is a grep followed by a cat followed by a test. This variable
250 is primarily for the use of other Configure units.
251
252cp (Loc.U):
5bf26616 253 This variable is used internally by Configure to determine the
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254 full pathname (if any) of the cp program. After Configure runs,
255 the value is reset to a plain "cp" and is not useful.
256
257cpio (Loc.U):
258 This variable is defined but not used by Configure.
259 The value is a plain '' and is not useful.
260
261cpp (Loc.U):
5bf26616 262 This variable is used internally by Configure to determine the
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263 full pathname (if any) of the cpp program. After Configure runs,
264 the value is reset to a plain "cpp" and is not useful.
265
266cpp_stuff (cpp_stuff.U):
267 This variable contains an identification of the catenation mechanism
268 used by the C preprocessor.
269
270cppccsymbols (Cppsym.U):
ff935051 271 The variable contains the symbols defined by the C compiler
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272 when it calls cpp. The symbols defined by the cc alone or cpp
273 alone are not in this list, see ccsymbols and cppsymbols.
274 The list is a space-separated list of symbol=value tokens.
275
276cppflags (ccflags.U):
277 This variable holds the flags that will be passed to the C pre-
278 processor. It is up to the Makefile to use it.
279
280cpplast (cppstdin.U):
281 This variable has the same functionality as cppminus, only it applies
282 to cpprun and not cppstdin.
283
284cppminus (cppstdin.U):
285 This variable contains the second part of the string which will invoke
286 the C preprocessor on the standard input and produce to standard
287 output. This variable will have the value "-" if cppstdin needs
288 a minus to specify standard input, otherwise the value is "".
289
290cpprun (cppstdin.U):
291 This variable contains the command which will invoke a C preprocessor
292 on standard input and put the output to stdout. It is guaranteed not
293 to be a wrapper and may be a null string if no preprocessor can be
294 made directly available. This preprocessor might be different from the
295 one used by the C compiler. Don't forget to append cpplast after the
296 preprocessor options.
297
298cppstdin (cppstdin.U):
299 This variable contains the command which will invoke the C
300 preprocessor on standard input and put the output to stdout.
301 It is primarily used by other Configure units that ask about
302 preprocessor symbols.
303
304cppsymbols (Cppsym.U):
305 The variable contains the symbols defined by the C preprocessor
306 alone. The symbols defined by cc or by cc when it calls cpp are
307 not in this list, see ccsymbols and cppccsymbols.
308 The list is a space-separated list of symbol=value tokens.
309
310crosscompile (crosscompile.U):
311 This variable conditionally defines the CROSSCOMPILE symbol
312 which signifies that the build process is be a cross-compilation.
313 This is normally set by hints files or from Configure command line.
314
315cryptlib (d_crypt.U):
316 This variable holds -lcrypt or the path to a libcrypt.a archive if
317 the crypt() function is not defined in the standard C library. It is
318 up to the Makefile to use this.
319
320csh (Loc.U):
5bf26616 321 This variable is used internally by Configure to determine the
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322 full pathname (if any) of the csh program. After Configure runs,
323 the value is reset to a plain "csh" and is not useful.
324
325d_access (d_access.U):
326 This variable conditionally defines HAS_ACCESS if the access() system
327 call is available to check for access permissions using real IDs.
328
329d_accessx (d_accessx.U):
330 This variable conditionally defines the HAS_ACCESSX symbol, which
331 indicates to the C program that the accessx() routine is available.
332
333d_alarm (d_alarm.U):
334 This variable conditionally defines the HAS_ALARM symbol, which
335 indicates to the C program that the alarm() routine is available.
336
337d_archlib (archlib.U):
338 This variable conditionally defines ARCHLIB to hold the pathname
339 of architecture-dependent library files for $package. If
340 $archlib is the same as $privlib, then this is set to undef.
341
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342d_atolf (atolf.U):
343 This variable conditionally defines the HAS_ATOLF symbol, which
344 indicates to the C program that the atolf() routine is available.
345
346d_atoll (atoll.U):
347 This variable conditionally defines the HAS_ATOLL symbol, which
348 indicates to the C program that the atoll() routine is available.
349
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350d_attribut (d_attribut.U):
351 This variable conditionally defines HASATTRIBUTE, which
352 indicates the C compiler can check for function attributes,
353 such as printf formats.
354
355d_bcmp (d_bcmp.U):
356 This variable conditionally defines the HAS_BCMP symbol if
357 the bcmp() routine is available to compare strings.
358
359d_bcopy (d_bcopy.U):
360 This variable conditionally defines the HAS_BCOPY symbol if
361 the bcopy() routine is available to copy strings.
362
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363d_bincompat5005 (bincompat5005.U):
364 This variable conditionally defines BINCOMPAT5005 so that embed.h
365 can take special action if Perl 5.006 should be binary-compatible
366 with Perl 5.005. This is impossible for builds that use features
367 like threads and multiplicity it is always $undef for those versions.
368
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369d_bsd (Guess.U):
370 This symbol conditionally defines the symbol BSD when running on a
371 BSD system.
372
373d_bsdgetpgrp (d_getpgrp.U):
374 This variable conditionally defines USE_BSD_GETPGRP if
375 getpgrp needs one arguments whereas USG one needs none.
376
377d_bsdsetpgrp (d_setpgrp.U):
378 This variable conditionally defines USE_BSD_SETPGRP if
379 setpgrp needs two arguments whereas USG one needs none.
380 See also d_setpgid for a POSIX interface.
381
382d_bzero (d_bzero.U):
383 This variable conditionally defines the HAS_BZERO symbol if
384 the bzero() routine is available to set memory to 0.
385
386d_casti32 (d_casti32.U):
387 This variable conditionally defines CASTI32, which indicates
388 whether the C compiler can cast large floats to 32-bit ints.
389
390d_castneg (d_castneg.U):
391 This variable conditionally defines CASTNEG, which indicates
392 wether the C compiler can cast negative float to unsigned.
393
394d_charvspr (d_vprintf.U):
395 This variable conditionally defines CHARVSPRINTF if this system
396 has vsprintf returning type (char*). The trend seems to be to
397 declare it as "int vsprintf()".
398
399d_chown (d_chown.U):
400 This variable conditionally defines the HAS_CHOWN symbol, which
401 indicates to the C program that the chown() routine is available.
402
403d_chroot (d_chroot.U):
404 This variable conditionally defines the HAS_CHROOT symbol, which
405 indicates to the C program that the chroot() routine is available.
406
407d_chsize (d_chsize.U):
408 This variable conditionally defines the CHSIZE symbol, which
409 indicates to the C program that the chsize() routine is available
410 to truncate files. You might need a -lx to get this routine.
411
412d_closedir (d_closedir.U):
413 This variable conditionally defines HAS_CLOSEDIR if closedir() is
414 available.
415
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416d_const (d_const.U):
417 This variable conditionally defines the HASCONST symbol, which
418 indicates to the C program that this C compiler knows about the
419 const type.
420
421d_crypt (d_crypt.U):
422 This variable conditionally defines the CRYPT symbol, which
423 indicates to the C program that the crypt() routine is available
424 to encrypt passwords and the like.
425
426d_csh (d_csh.U):
427 This variable conditionally defines the CSH symbol, which
428 indicates to the C program that the C-shell exists.
429
430d_cuserid (d_cuserid.U):
431 This variable conditionally defines the HAS_CUSERID symbol, which
432 indicates to the C program that the cuserid() routine is available
433 to get character login names.
434
435d_dbl_dig (d_dbl_dig.U):
436 This variable conditionally defines d_dbl_dig if this system's
437 header files provide DBL_DIG, which is the number of significant
438 digits in a double precision number.
439
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440d_difftime (d_difftime.U):
441 This variable conditionally defines the HAS_DIFFTIME symbol, which
442 indicates to the C program that the difftime() routine is available.
443
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444d_dirnamlen (i_dirent.U):
445 This variable conditionally defines DIRNAMLEN, which indicates
446 to the C program that the length of directory entry names is
447 provided by a d_namelen field.
448
449d_dlerror (d_dlerror.U):
450 This variable conditionally defines the HAS_DLERROR symbol, which
451 indicates to the C program that the dlerror() routine is available.
452
453d_dlopen (d_dlopen.U):
454 This variable conditionally defines the HAS_DLOPEN symbol, which
455 indicates to the C program that the dlopen() routine is available.
456
457d_dlsymun (d_dlsymun.U):
458 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
459 indicates that we need to prepend an underscore to the symbol
460 name before calling dlsym().
461
462d_dosuid (d_dosuid.U):
463 This variable conditionally defines the symbol DOSUID, which
464 tells the C program that it should insert setuid emulation code
465 on hosts which have setuid #! scripts disabled.
466
467d_drand48proto (d_drand48proto.U):
468 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
469 which indicates to the C program that the system provides
470 a prototype for the drand48() function. Otherwise, it is
471 up to the program to supply one.
472
473d_dup2 (d_dup2.U):
474 This variable conditionally defines HAS_DUP2 if dup2() is
475 available to duplicate file descriptors.
476
477d_eaccess (d_eaccess.U):
478 This variable conditionally defines the HAS_EACCESS symbol, which
479 indicates to the C program that the eaccess() routine is available.
480
481d_endgrent (d_endgrent.U):
482 This variable conditionally defines the HAS_ENDGRENT symbol, which
483 indicates to the C program that the endgrent() routine is available
484 for sequential access of the group database.
485
486d_endhent (d_endhent.U):
487 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
488 available to close whatever was being used for host queries.
489
490d_endnent (d_endnent.U):
491 This variable conditionally defines HAS_ENDNETENT if endnetent() is
492 available to close whatever was being used for network queries.
493
494d_endpent (d_endpent.U):
495 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
496 available to close whatever was being used for protocol queries.
497
498d_endpwent (d_endpwent.U):
499 This variable conditionally defines the HAS_ENDPWENT symbol, which
500 indicates to the C program that the endpwent() routine is available
501 for sequential access of the passwd database.
502
503d_endsent (d_endsent.U):
504 This variable conditionally defines HAS_ENDSERVENT if endservent() is
505 available to close whatever was being used for service queries.
506
507d_endspent (d_endspent.U):
508 This variable conditionally defines HAS_ENDSPENT if endspent() is
509 available to finalize the scan of SysV shadow password entries.
510
511d_eofnblk (nblock_io.U):
512 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
513 when reading from a non-blocking I/O source.
514
515d_eunice (Guess.U):
516 This variable conditionally defines the symbols EUNICE and VAX, which
517 alerts the C program that it must deal with ideosyncracies of VMS.
518
519d_fchmod (d_fchmod.U):
520 This variable conditionally defines the HAS_FCHMOD symbol, which
521 indicates to the C program that the fchmod() routine is available
522 to change mode of opened files.
523
524d_fchown (d_fchown.U):
525 This variable conditionally defines the HAS_FCHOWN symbol, which
526 indicates to the C program that the fchown() routine is available
527 to change ownership of opened files.
528
529d_fcntl (d_fcntl.U):
530 This variable conditionally defines the HAS_FCNTL symbol, and indicates
531 whether the fcntl() function exists
532
533d_fd_macros (d_fd_set.U):
534 This variable contains the eventual value of the HAS_FD_MACROS symbol,
535 which indicates if your C compiler knows about the macros which
536 manipulate an fd_set.
537
538d_fd_set (d_fd_set.U):
539 This variable contains the eventual value of the HAS_FD_SET symbol,
540 which indicates if your C compiler knows about the fd_set typedef.
541
542d_fds_bits (d_fd_set.U):
543 This variable contains the eventual value of the HAS_FDS_BITS symbol,
544 which indicates if your fd_set typedef contains the fds_bits member.
545 If you have an fd_set typedef, but the dweebs who installed it did
546 a half-fast job and neglected to provide the macros to manipulate
547 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
548
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549d_fgetpos (d_fgetpos.U):
550 This variable conditionally defines HAS_FGETPOS if fgetpos() is
551 available to get the file position indicator.
552
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553d_flexfnam (d_flexfnam.U):
554 This variable conditionally defines the FLEXFILENAMES symbol, which
555 indicates that the system supports filenames longer than 14 characters.
556
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557d_flock (d_flock.U):
558 This variable conditionally defines HAS_FLOCK if flock() is
559 available to do file locking.
560
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561d_fork (d_fork.U):
562 This variable conditionally defines the HAS_FORK symbol, which
563 indicates to the C program that the fork() routine is available.
564
565d_fpathconf (d_pathconf.U):
566 This variable conditionally defines the HAS_FPATHCONF symbol, which
567 indicates to the C program that the pathconf() routine is available
568 to determine file-system related limits and options associated
569 with a given open file descriptor.
570
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571d_fpos64_t (io64.U):
572 This symbol will be defined if the C compiler supports fpos64_t.
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575 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
576 which indicates that the struct fs_data is supported.
577
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578d_fseeko (d_fseeko.U):
579 This variable conditionally defines the HAS_FSEEKO symbol, which
580 indicates to the C program that the fseeko() routine is available.
581
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582d_fsetpos (d_fsetpos.U):
583 This variable conditionally defines HAS_FSETPOS if fsetpos() is
584 available to set the file position indicator.
585
0545a864 586d_fstatfs (d_fstatfs.U):
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587 This variable conditionally defines the HAS_FSTATFS symbol, which
588 indicates to the C program that the fstatfs() routine is available.
589
590d_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.
593
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594d_ftello (d_ftello.U):
595 This variable conditionally defines the HAS_FTELLO symbol, which
596 indicates to the C program that the ftello() routine is available.
597
598d_ftime (d_ftime.U):
599 This variable conditionally defines the HAS_FTIME symbol, which indicates
600 that the ftime() routine exists. The ftime() routine is basically
601 a sub-second accuracy clock.
602
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603d_Gconvert (d_gconvert.U):
604 This variable holds what Gconvert is defined as to convert
605 floating point numbers into strings. It could be 'gconvert'
606 or a more complex macro emulating gconvert with gcvt() or sprintf.
607 Possible values are:
608 d_Gconvert='gconvert((x),(n),(t),(b))'
609 d_Gconvert='gcvt((x),(n),(b))'
610 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
611
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612d_getgrent (d_getgrent.U):
613 This variable conditionally defines the HAS_GETGRENT symbol, which
614 indicates to the C program that the getgrent() routine is available
615 for sequential access of the group database.
616
617d_getgrps (d_getgrps.U):
618 This variable conditionally defines the HAS_GETGROUPS symbol, which
619 indicates to the C program that the getgroups() routine is available
620 to get the list of process groups.
621
622d_gethbyaddr (d_gethbyad.U):
623 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
624 indicates to the C program that the gethostbyaddr() routine is available
625 to look up hosts by their IP addresses.
626
627d_gethbyname (d_gethbynm.U):
628 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
629 indicates to the C program that the gethostbyname() routine is available
630 to look up host names in some data base or other.
631
632d_gethent (d_gethent.U):
633 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
634 available to look up host names in some data base or another.
635
636d_gethname (d_gethname.U):
637 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
638 indicates to the C program that the gethostname() routine may be
639 used to derive the host name.
640
641d_gethostprotos (d_gethostprotos.U):
642 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
643 which indicates to the C program that <netdb.h> supplies
644 prototypes for the various gethost*() functions.
645 See also netdbtype.U for probing for various netdb types.
646
647d_getlogin (d_getlogin.U):
648 This variable conditionally defines the HAS_GETLOGIN symbol, which
649 indicates to the C program that the getlogin() routine is available
650 to get the login name.
651
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652d_getmnt (d_getmnt.U):
653 This variable conditionally defines the HAS_GETMNT symbol, which
654 indicates to the C program that the getmnt() routine is available
655 to retrieve one or more mount info blocks by filename.
656
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657d_getmntent (d_getmntent.U):
658 This variable conditionally defines the HAS_GETMNTENT symbol, which
659 indicates to the C program that the getmntent() routine is available
0617aed7 660 to iterate through mounted files to get their mount info.
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661
662d_getnbyaddr (d_getnbyad.U):
663 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
664 indicates to the C program that the getnetbyaddr() routine is available
665 to look up networks by their IP addresses.
666
667d_getnbyname (d_getnbynm.U):
668 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
669 indicates to the C program that the getnetbyname() routine is available
670 to look up networks by their names.
671
672d_getnent (d_getnent.U):
673 This variable conditionally defines HAS_GETNETENT if getnetent() is
674 available to look up network names in some data base or another.
675
676d_getnetprotos (d_getnetprotos.U):
677 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
678 which indicates to the C program that <netdb.h> supplies
679 prototypes for the various getnet*() functions.
680 See also netdbtype.U for probing for various netdb types.
681
682d_getpbyname (d_getprotby.U):
683 This variable conditionally defines the HAS_GETPROTOBYNAME
684 symbol, which indicates to the C program that the
685 getprotobyname() routine is available to look up protocols
686 by their name.
687
688d_getpbynumber (d_getprotby.U):
689 This variable conditionally defines the HAS_GETPROTOBYNUMBER
690 symbol, which indicates to the C program that the
691 getprotobynumber() routine is available to look up protocols
692 by their number.
693
694d_getpent (d_getpent.U):
695 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
696 available to look up protocols in some data base or another.
697
698d_getpgid (d_getpgid.U):
699 This variable conditionally defines the HAS_GETPGID symbol, which
700 indicates to the C program that the getpgid(pid) function
701 is available to get the process group id.
702
703d_getpgrp2 (d_getpgrp2.U):
704 This variable conditionally defines the HAS_GETPGRP2 symbol, which
705 indicates to the C program that the getpgrp2() (as in DG/UX) routine
706 is available to get the current process group.
707
708d_getpgrp (d_getpgrp.U):
709 This variable conditionally defines HAS_GETPGRP if getpgrp() is
710 available to get the current process group.
711
712d_getppid (d_getppid.U):
713 This variable conditionally defines the HAS_GETPPID symbol, which
714 indicates to the C program that the getppid() routine is available
715 to get the parent process ID.
716
717d_getprior (d_getprior.U):
718 This variable conditionally defines HAS_GETPRIORITY if getpriority()
719 is available to get a process's priority.
720
721d_getprotoprotos (d_getprotoprotos.U):
722 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
723 which indicates to the C program that <netdb.h> supplies
724 prototypes for the various getproto*() functions.
725 See also netdbtype.U for probing for various netdb types.
726
727d_getpwent (d_getpwent.U):
728 This variable conditionally defines the HAS_GETPWENT symbol, which
729 indicates to the C program that the getpwent() routine is available
730 for sequential access of the passwd database.
731
732d_getsbyname (d_getsrvby.U):
733 This variable conditionally defines the HAS_GETSERVBYNAME
734 symbol, which indicates to the C program that the
735 getservbyname() routine is available to look up services
736 by their name.
737
738d_getsbyport (d_getsrvby.U):
739 This variable conditionally defines the HAS_GETSERVBYPORT
740 symbol, which indicates to the C program that the
741 getservbyport() routine is available to look up services
742 by their port.
743
744d_getsent (d_getsent.U):
745 This variable conditionally defines HAS_GETSERVENT if getservent() is
746 available to look up network services in some data base or another.
747
748d_getservprotos (d_getservprotos.U):
749 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
750 which indicates to the C program that <netdb.h> supplies
751 prototypes for the various getserv*() functions.
752 See also netdbtype.U for probing for various netdb types.
753
754d_getspent (d_getspent.U):
755 This variable conditionally defines HAS_GETSPENT if getspent() is
756 available to retrieve SysV shadow password entries sequentially.
757
758d_getspnam (d_getspnam.U):
759 This variable conditionally defines HAS_GETSPNAM if getspnam() is
760 available to retrieve SysV shadow password entries by name.
761
762d_gettimeod (d_ftime.U):
763 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
764 indicates that the gettimeofday() system call exists (to obtain a
765 sub-second accuracy clock). You should probably include <sys/resource.h>.
766
767d_gnulibc (d_gnulibc.U):
768 Defined if we're dealing with the GNU C Library.
769
770d_grpasswd (i_grp.U):
771 This variable conditionally defines GRPASSWD, which indicates
772 that struct group in <grp.h> contains gr_passwd.
773
774d_hasmntopt (d_hasmntopt.U):
775 This variable conditionally defines the HAS_HASMNTOPT symbol, which
776 indicates to the C program that the hasmntopt() routine is available
777 to query the mount options of file systems.
778
779d_htonl (d_htonl.U):
780 This variable conditionally defines HAS_HTONL if htonl() and its
781 friends are available to do network order byte swapping.
782
783d_index (d_strchr.U):
784 This variable conditionally defines HAS_INDEX if index() and
785 rindex() are available for string searching.
786
787d_inetaton (d_inetaton.U):
788 This variable conditionally defines the HAS_INET_ATON symbol, which
789 indicates to the C program that the inet_aton() function is available
790 to parse IP address "dotted-quad" strings.
791
e0a10278 792d_int64t (d_int64t.U):
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793 This symbol will be defined if the C compiler supports int64_t.
794
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795d_isascii (d_isascii.U):
796 This variable conditionally defines the HAS_ISASCII constant,
797 which indicates to the C program that isascii() is available.
798
799d_killpg (d_killpg.U):
800 This variable conditionally defines the HAS_KILLPG symbol, which
801 indicates to the C program that the killpg() routine is available
802 to kill process groups.
803
804d_lchown (d_lchown.U):
805 This variable conditionally defines the HAS_LCHOWN symbol, which
806 indicates to the C program that the lchown() routine is available
807 to operate on a symbolic link (instead of following the link).
808
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809d_ldbl_dig (d_ldbl_dig.U):
810 This variable conditionally defines d_ldbl_dig if this system's
811 header files provide LDBL_DIG, which is the number of significant
812 digits in a long double precision number.
813
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814d_link (d_link.U):
815 This variable conditionally defines HAS_LINK if link() is
816 available to create hard links.
817
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818d_locconv (d_locconv.U):
819 This variable conditionally defines HAS_LOCALECONV if localeconv() is
820 available for numeric and monetary formatting conventions.
821
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822d_lockf (d_lockf.U):
823 This variable conditionally defines HAS_LOCKF if lockf() is
824 available to do file locking.
825
826d_longdbl (d_longdbl.U):
827 This variable conditionally defines HAS_LONG_DOUBLE if
828 the long double type is supported.
829
830d_longlong (d_longlong.U):
831 This variable conditionally defines HAS_LONG_LONG if
832 the long long type is supported.
833
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834d_lstat (d_lstat.U):
835 This variable conditionally defines HAS_LSTAT if lstat() is
836 available to do file stats on symbolic links.
837
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838d_mblen (d_mblen.U):
839 This variable conditionally defines the HAS_MBLEN symbol, which
840 indicates to the C program that the mblen() routine is available
841 to find the number of bytes in a multibye character.
842
843d_mbstowcs (d_mbstowcs.U):
844 This variable conditionally defines the HAS_MBSTOWCS symbol, which
845 indicates to the C program that the mbstowcs() routine is available
846 to convert a multibyte string into a wide character string.
847
848d_mbtowc (d_mbtowc.U):
849 This variable conditionally defines the HAS_MBTOWC symbol, which
850 indicates to the C program that the mbtowc() routine is available
851 to convert multibyte to a wide character.
852
853d_memchr (d_memchr.U):
854 This variable conditionally defines the HAS_MEMCHR symbol, which
855 indicates to the C program that the memchr() routine is available
856 to locate characters within a C string.
857
858d_memcmp (d_memcmp.U):
859 This variable conditionally defines the HAS_MEMCMP symbol, which
860 indicates to the C program that the memcmp() routine is available
861 to compare blocks of memory.
862
863d_memcpy (d_memcpy.U):
864 This variable conditionally defines the HAS_MEMCPY symbol, which
865 indicates to the C program that the memcpy() routine is available
866 to copy blocks of memory.
867
868d_memmove (d_memmove.U):
869 This variable conditionally defines the HAS_MEMMOVE symbol, which
870 indicates to the C program that the memmove() routine is available
871 to copy potentatially overlapping blocks of memory.
872
873d_memset (d_memset.U):
874 This variable conditionally defines the HAS_MEMSET symbol, which
875 indicates to the C program that the memset() routine is available
876 to set blocks of memory.
877
878d_mkdir (d_mkdir.U):
879 This variable conditionally defines the HAS_MKDIR symbol, which
880 indicates to the C program that the mkdir() routine is available
881 to create directories..
882
883d_mkfifo (d_mkfifo.U):
884 This variable conditionally defines the HAS_MKFIFO symbol, which
885 indicates to the C program that the mkfifo() routine is available.
886
887d_mktime (d_mktime.U):
888 This variable conditionally defines the HAS_MKTIME symbol, which
889 indicates to the C program that the mktime() routine is available.
890
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891d_msg (d_msg.U):
892 This variable conditionally defines the HAS_MSG symbol, which
893 indicates that the entire msg*(2) library is present.
894
895d_msg_ctrunc (d_socket.U):
896 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
897 which indicates that the MSG_CTRUNC is available. #ifdef is
898 not enough because it may be an enum, glibc has been known to do this.
899
900d_msg_dontroute (d_socket.U):
901 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
902 which indicates that the MSG_DONTROUTE is available. #ifdef is
903 not enough because it may be an enum, glibc has been known to do this.
904
905d_msg_oob (d_socket.U):
906 This variable conditionally defines the HAS_MSG_OOB symbol,
907 which indicates that the MSG_OOB is available. #ifdef is
908 not enough because it may be an enum, glibc has been known to do this.
909
910d_msg_peek (d_socket.U):
911 This variable conditionally defines the HAS_MSG_PEEK symbol,
912 which indicates that the MSG_PEEK is available. #ifdef is
913 not enough because it may be an enum, glibc has been known to do this.
914
915d_msg_proxy (d_socket.U):
916 This variable conditionally defines the HAS_MSG_PROXY symbol,
917 which indicates that the MSG_PROXY is available. #ifdef is
918 not enough because it may be an enum, glibc has been known to do this.
919
920d_msgctl (d_msgctl.U):
921 This variable conditionally defines the HAS_MSGCTL symbol, which
922 indicates to the C program that the msgctl() routine is available.
923
924d_msgget (d_msgget.U):
925 This variable conditionally defines the HAS_MSGGET symbol, which
926 indicates to the C program that the msgget() routine is available.
927
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928d_msgrcv (d_msgrcv.U):
929 This variable conditionally defines the HAS_MSGRCV symbol, which
930 indicates to the C program that the msgrcv() routine is available.
931
932d_msgsnd (d_msgsnd.U):
933 This variable conditionally defines the HAS_MSGSND symbol, which
934 indicates to the C program that the msgsnd() routine is available.
935
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936d_mymalloc (mallocsrc.U):
937 This variable conditionally defines MYMALLOC in case other parts
938 of the source want to take special action if MYMALLOC is used.
939 This may include different sorts of profiling or error detection.
940
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941d_nice (d_nice.U):
942 This variable conditionally defines the HAS_NICE symbol, which
943 indicates to the C program that the nice() routine is available.
944
945d_off64_t (io64.U):
946 This symbol will be defined if the C compiler supports off64_t.
947
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948d_old_pthread_create_joinable (d_pthrattrj.U):
949 This variable conditionally defines pthread_create_joinable.
950 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
951
952d_oldpthreads (usethreads.U):
953 This variable conditionally defines the OLD_PTHREADS_API symbol,
954 and indicates that Perl should be built to use the old
8c09e4ca 955 draft POSIX threads API. This is only potentially meaningful if
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956 usethreads is set.
957
958d_oldsock (d_socket.U):
959 This variable conditionally defines the OLDSOCKET symbol, which
960 indicates that the BSD socket interface is based on 4.1c and not 4.2.
961
962d_open3 (d_open3.U):
963 This variable conditionally defines the HAS_OPEN3 manifest constant,
964 which indicates to the C program that the 3 argument version of
965 the open(2) function is available.
966
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967d_pathconf (d_pathconf.U):
968 This variable conditionally defines the HAS_PATHCONF symbol, which
969 indicates to the C program that the pathconf() routine is available
970 to determine file-system related limits and options associated
971 with a given filename.
972
973d_pause (d_pause.U):
974 This variable conditionally defines the HAS_PAUSE symbol, which
975 indicates to the C program that the pause() routine is available
976 to suspend a process until a signal is received.
977
978d_phostname (d_gethname.U):
979 This variable conditionally defines the HAS_PHOSTNAME symbol, which
980 contains the shell command which, when fed to popen(), may be
981 used to derive the host name.
982
983d_pipe (d_pipe.U):
984 This variable conditionally defines the HAS_PIPE symbol, which
985 indicates to the C program that the pipe() routine is available
986 to create an inter-process channel.
987
988d_poll (d_poll.U):
989 This variable conditionally defines the HAS_POLL symbol, which
990 indicates to the C program that the poll() routine is available
991 to poll active file descriptors.
992
993d_portable (d_portable.U):
994 This variable conditionally defines the PORTABLE symbol, which
995 indicates to the C program that it should not assume that it is
996 running on the machine it was compiled on.
997
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998d_PRId64 (quadfio.U):
999 This variable conditionally defines the PERL_PRId64 symbol, which
1000 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1001
1002d_PRIeldbl (longdblfio.U):
1003 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1004 indiciates that stdio has a symbol to print long doubles.
1005
1006d_PRIEldbl (longdblfio.U):
1007 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1008 indiciates that stdio has a symbol to print long doubles.
1009
1010d_PRIfldbl (longdblfio.U):
1011 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1012 indiciates that stdio has a symbol to print long doubles.
1013
1014d_PRIFldbl (longdblfio.U):
1015 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1016 indiciates that stdio has a symbol to print long doubles.
1017
1018d_PRIgldbl (longdblfio.U):
1019 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1020 indiciates that stdio has a symbol to print long doubles.
1021
1022d_PRIGldbl (longdblfio.U):
1023 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1024 indiciates that stdio has a symbol to print long doubles.
1025
1026d_PRIi64 (quadfio.U):
1027 This variable conditionally defines the PERL_PRIi64 symbol, which
1028 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1029
1030d_PRIo64 (quadfio.U):
1031 This variable conditionally defines the PERL_PRIo64 symbol, which
1032 indiciates that stdio has a symbol to print 64-bit octal numbers.
1033
1034d_PRIu64 (quadfio.U):
1035 This variable conditionally defines the PERL_PRIu64 symbol, which
1036 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1037 numbers.
1038
1039d_PRIx64 (quadfio.U):
1040 This variable conditionally defines the PERL_PRIx64 symbol, which
1041 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1042
1043d_PRIX64 (quadfio.U):
1044 This variable conditionally defines the PERL_PRIX64 symbol, which
1045 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1046
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1047d_pthread_yield (d_pthread_y.U):
1048 This variable conditionally defines the HAS_PTHREAD_YIELD
1049 symbol if the pthread_yield routine is available to yield
1050 the execution of the current thread.
1051
1052d_pwage (i_pwd.U):
1053 This variable conditionally defines PWAGE, which indicates
1054 that struct passwd contains pw_age.
1055
1056d_pwchange (i_pwd.U):
1057 This variable conditionally defines PWCHANGE, which indicates
1058 that struct passwd contains pw_change.
1059
1060d_pwclass (i_pwd.U):
1061 This variable conditionally defines PWCLASS, which indicates
1062 that struct passwd contains pw_class.
1063
1064d_pwcomment (i_pwd.U):
1065 This variable conditionally defines PWCOMMENT, which indicates
1066 that struct passwd contains pw_comment.
1067
1068d_pwexpire (i_pwd.U):
1069 This variable conditionally defines PWEXPIRE, which indicates
1070 that struct passwd contains pw_expire.
1071
1072d_pwgecos (i_pwd.U):
1073 This variable conditionally defines PWGECOS, which indicates
1074 that struct passwd contains pw_gecos.
1075
1076d_pwpasswd (i_pwd.U):
1077 This variable conditionally defines PWPASSWD, which indicates
1078 that struct passwd contains pw_passwd.
1079
1080d_pwquota (i_pwd.U):
1081 This variable conditionally defines PWQUOTA, which indicates
1082 that struct passwd contains pw_quota.
1083
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1084d_qgcvt (d_qgcvt.U):
1085 This variable conditionally defines the HAS_QGCVT symbol, which
1086 indicates to the C program that the qgcvt() routine is available.
1087
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1088d_quad (quadtype.U):
1089 This variable, if defined, tells that there's a 64-bit integer type,
1090 quadtype.
1091
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1092d_readdir (d_readdir.U):
1093 This variable conditionally defines HAS_READDIR if readdir() is
1094 available to read directory entries.
1095
1096d_readlink (d_readlink.U):
1097 This variable conditionally defines the HAS_READLINK symbol, which
1098 indicates to the C program that the readlink() routine is available
1099 to read the value of a symbolic link.
1100
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1101d_rename (d_rename.U):
1102 This variable conditionally defines the HAS_RENAME symbol, which
1103 indicates to the C program that the rename() routine is available
1104 to rename files.
1105
1106d_rewinddir (d_readdir.U):
1107 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1108 available.
1109
1110d_rmdir (d_rmdir.U):
1111 This variable conditionally defines HAS_RMDIR if rmdir() is
1112 available to remove directories.
1113
1114d_safebcpy (d_safebcpy.U):
1115 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1116 the bcopy() routine can do overlapping copies.
1117
1118d_safemcpy (d_safemcpy.U):
1119 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1120 the memcpy() routine can do overlapping copies.
1121
1122d_sanemcmp (d_sanemcmp.U):
1123 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1124 the memcpy() routine is available and can be used to compare relative
1125 magnitudes of chars with their high bits set.
1126
1127d_sched_yield (d_pthread_y.U):
1128 This variable conditionally defines the HAS_SCHED_YIELD
1129 symbol if the sched_yield routine is available to yield
1130 the execution of the current thread.
1131
1132d_scm_rights (d_socket.U):
1133 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1134 which indicates that the SCM_RIGHTS is available. #ifdef is
1135 not enough because it may be an enum, glibc has been known to do this.
1136
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1137d_seekdir (d_readdir.U):
1138 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1139 available.
1140
1141d_select (d_select.U):
1142 This variable conditionally defines HAS_SELECT if select() is
1143 available to select active file descriptors. A <sys/time.h>
1144 inclusion may be necessary for the timeout field.
1145
1146d_sem (d_sem.U):
1147 This variable conditionally defines the HAS_SEM symbol, which
1148 indicates that the entire sem*(2) library is present.
1149
1150d_semctl (d_semctl.U):
1151 This variable conditionally defines the HAS_SEMCTL symbol, which
1152 indicates to the C program that the semctl() routine is available.
1153
1154d_semctl_semid_ds (d_union_semun.U):
1155 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1156 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1157
1158d_semctl_semun (d_union_semun.U):
1159 This variable conditionally defines USE_SEMCTL_SEMUN, which
1160 indicates that union semun is to be used for semctl IPC_STAT.
1161
1162d_semget (d_semget.U):
1163 This variable conditionally defines the HAS_SEMGET symbol, which
1164 indicates to the C program that the semget() routine is available.
1165
1166d_semop (d_semop.U):
1167 This variable conditionally defines the HAS_SEMOP symbol, which
1168 indicates to the C program that the semop() routine is available.
1169
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1170d_setegid (d_setegid.U):
1171 This variable conditionally defines the HAS_SETEGID symbol, which
1172 indicates to the C program that the setegid() routine is available
1173 to change the effective gid of the current program.
1174
1175d_seteuid (d_seteuid.U):
1176 This variable conditionally defines the HAS_SETEUID symbol, which
1177 indicates to the C program that the seteuid() routine is available
1178 to change the effective uid of the current program.
1179
1180d_setgrent (d_setgrent.U):
1181 This variable conditionally defines the HAS_SETGRENT symbol, which
1182 indicates to the C program that the setgrent() routine is available
1183 for initializing sequential access to the group database.
1184
1185d_setgrps (d_setgrps.U):
1186 This variable conditionally defines the HAS_SETGROUPS symbol, which
1187 indicates to the C program that the setgroups() routine is available
1188 to set the list of process groups.
1189
1190d_sethent (d_sethent.U):
1191 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1192 available.
1193
1194d_setlinebuf (d_setlnbuf.U):
1195 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1196 indicates to the C program that the setlinebuf() routine is available
1197 to change stderr or stdout from block-buffered or unbuffered to a
1198 line-buffered mode.
1199
1200d_setlocale (d_setlocale.U):
1201 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1202 available to handle locale-specific ctype implementations.
1203
1204d_setnent (d_setnent.U):
1205 This variable conditionally defines HAS_SETNETENT if setnetent() is
1206 available.
1207
1208d_setpent (d_setpent.U):
1209 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1210 available.
1211
1212d_setpgid (d_setpgid.U):
1213 This variable conditionally defines the HAS_SETPGID symbol if the
1214 setpgid(pid, gpid) function is available to set process group ID.
1215
1216d_setpgrp2 (d_setpgrp2.U):
1217 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1218 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1219 is available to set the current process group.
1220
1221d_setpgrp (d_setpgrp.U):
1222 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1223 available to set the current process group.
1224
1225d_setprior (d_setprior.U):
1226 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1227 is available to set a process's priority.
1228
1229d_setpwent (d_setpwent.U):
1230 This variable conditionally defines the HAS_SETPWENT symbol, which
1231 indicates to the C program that the setpwent() routine is available
1232 for initializing sequential access to the passwd database.
1233
1234d_setregid (d_setregid.U):
1235 This variable conditionally defines HAS_SETREGID if setregid() is
1236 available to change the real and effective gid of the current
1237 process.
1238
1239d_setresgid (d_setregid.U):
1240 This variable conditionally defines HAS_SETRESGID if setresgid() is
1241 available to change the real, effective and saved gid of the current
1242 process.
1243
1244d_setresuid (d_setreuid.U):
1245 This variable conditionally defines HAS_SETREUID if setresuid() is
1246 available to change the real, effective and saved uid of the current
1247 process.
1248
1249d_setreuid (d_setreuid.U):
1250 This variable conditionally defines HAS_SETREUID if setreuid() is
1251 available to change the real and effective uid of the current
1252 process.
1253
1254d_setrgid (d_setrgid.U):
1255 This variable conditionally defines the HAS_SETRGID symbol, which
1256 indicates to the C program that the setrgid() routine is available
1257 to change the real gid of the current program.
1258
1259d_setruid (d_setruid.U):
1260 This variable conditionally defines the HAS_SETRUID symbol, which
1261 indicates to the C program that the setruid() routine is available
1262 to change the real uid of the current program.
1263
1264d_setsent (d_setsent.U):
1265 This variable conditionally defines HAS_SETSERVENT if setservent() is
1266 available.
1267
1268d_setsid (d_setsid.U):
1269 This variable conditionally defines HAS_SETSID if setsid() is
1270 available to set the process group ID.
1271
1272d_setspent (d_setspent.U):
1273 This variable conditionally defines HAS_SETSPENT if setspent() is
1274 available to initialize the scan of SysV shadow password entries.
1275
1276d_setvbuf (d_setvbuf.U):
1277 This variable conditionally defines the HAS_SETVBUF symbol, which
1278 indicates to the C program that the setvbuf() routine is available
1279 to change buffering on an open stdio stream.
1280
1281d_sfio (d_sfio.U):
1282 This variable conditionally defines the USE_SFIO symbol,
1283 and indicates whether sfio is available (and should be used).
1284
1285d_shm (d_shm.U):
1286 This variable conditionally defines the HAS_SHM symbol, which
1287 indicates that the entire shm*(2) library is present.
1288
1289d_shmat (d_shmat.U):
1290 This variable conditionally defines the HAS_SHMAT symbol, which
1291 indicates to the C program that the shmat() routine is available.
1292
1293d_shmatprototype (d_shmat.U):
1294 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1295 symbol, which indicates that sys/shm.h has a prototype for
1296 shmat.
1297
1298d_shmctl (d_shmctl.U):
1299 This variable conditionally defines the HAS_SHMCTL symbol, which
1300 indicates to the C program that the shmctl() routine is available.
1301
1302d_shmdt (d_shmdt.U):
1303 This variable conditionally defines the HAS_SHMDT symbol, which
1304 indicates to the C program that the shmdt() routine is available.
1305
1306d_shmget (d_shmget.U):
1307 This variable conditionally defines the HAS_SHMGET symbol, which
1308 indicates to the C program that the shmget() routine is available.
1309
1310d_sigaction (d_sigaction.U):
1311 This variable conditionally defines the HAS_SIGACTION symbol, which
1312 indicates that the Vr4 sigaction() routine is available.
1313
1314d_sigsetjmp (d_sigsetjmp.U):
1315 This variable conditionally defines the HAS_SIGSETJMP symbol,
1316 which indicates that the sigsetjmp() routine is available to
1317 call setjmp() and optionally save the process's signal mask.
1318
1319d_socket (d_socket.U):
1320 This variable conditionally defines HAS_SOCKET, which indicates
1321 that the BSD socket interface is supported.
1322
1323d_sockpair (d_socket.U):
1324 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1325 indicates that the BSD socketpair() is supported.
1326
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1327d_sqrtl (d_sqrtl.U):
1328 This variable conditionally defines the HAS_SQRTL symbol, which
1329 indicates to the C program that the sqrtl() routine is available.
1330
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1331d_statblks (d_statblks.U):
1332 This variable conditionally defines USE_STAT_BLOCKS
1333 if this system has a stat structure declaring
1334 st_blksize and st_blocks.
1335
ad27e871 1336d_statfs_f_flags (d_statfs_f_flags.U):
0545a864 1337 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
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1338 symbol, which indicates to struct statfs from has f_flags member.
1339 This kind of struct statfs is coming from sys/mount.h (BSD),
1340 not from sys/statfs.h (SYSV).
1341
ad27e871 1342d_statfs_s (d_statfs_s.U):
0545a864
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1343 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1344 which indicates that the struct statfs is supported.
1345
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1346d_statvfs (d_statvfs.U):
1347 This variable conditionally defines the HAS_STATVFS symbol, which
1348 indicates to the C program that the statvfs() routine is available.
1349
1350d_stdio_cnt_lval (d_stdstdio.U):
1351 This variable conditionally defines STDIO_CNT_LVALUE if the
1352 FILE_cnt macro can be used as an lvalue.
1353
1354d_stdio_ptr_lval (d_stdstdio.U):
1355 This variable conditionally defines STDIO_PTR_LVALUE if the
1356 FILE_ptr macro can be used as an lvalue.
1357
1358d_stdio_stream_array (stdio_streams.U):
1359 This variable tells whether there is an array holding
1360 the stdio streams.
1361
1362d_stdiobase (d_stdstdio.U):
1363 This variable conditionally defines USE_STDIO_BASE if this system
1364 has a FILE structure declaring a usable _base field (or equivalent)
1365 in stdio.h.
1366
1367d_stdstdio (d_stdstdio.U):
1368 This variable conditionally defines USE_STDIO_PTR if this system
1369 has a FILE structure declaring usable _ptr and _cnt fields (or
1370 equivalent) in stdio.h.
1371
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1372d_strchr (d_strchr.U):
1373 This variable conditionally defines HAS_STRCHR if strchr() and
1374 strrchr() are available for string searching.
1375
1376d_strcoll (d_strcoll.U):
1377 This variable conditionally defines HAS_STRCOLL if strcoll() is
1378 available to compare strings using collating information.
1379
1380d_strctcpy (d_strctcpy.U):
1381 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1382 indicates to the C program that this C compiler knows how to copy
1383 structures.
1384
1385d_strerrm (d_strerror.U):
1386 This variable holds what Strerrr is defined as to translate an error
1387 code condition into an error message string. It could be 'strerror'
1388 or a more complex macro emulating strrror with sys_errlist[], or the
1389 "unknown" string when both strerror and sys_errlist are missing.
1390
1391d_strerror (d_strerror.U):
1392 This variable conditionally defines HAS_STRERROR if strerror() is
1393 available to translate error numbers to strings.
1394
1395d_strtod (d_strtod.U):
1396 This variable conditionally defines the HAS_STRTOD symbol, which
1397 indicates to the C program that the strtod() routine is available
1398 to provide better numeric string conversion than atof().
1399
1400d_strtol (d_strtol.U):
1401 This variable conditionally defines the HAS_STRTOL symbol, which
1402 indicates to the C program that the strtol() routine is available
1403 to provide better numeric string conversion than atoi() and friends.
1404
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1405d_strtold (d_strtold.U):
1406 This variable conditionally defines the HAS_STRTOLD symbol, which
1407 indicates to the C program that the strtold() routine is available.
1408
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1409d_strtoul (d_strtoul.U):
1410 This variable conditionally defines the HAS_STRTOUL symbol, which
1411 indicates to the C program that the strtoul() routine is available
1412 to provide conversion of strings to unsigned long.
1413
ff935051 1414d_strtoull (d_strtoull.U):
11dc3f68
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1415 This variable conditionally defines the HAS_STRTOULL symbol, which
1416 indicates to the C program that the strtoull() routine is available.
1417
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1418d_strtouq (d_strtouq.U):
1419 This variable conditionally defines the HAS_STRTOUQ symbol, which
1420 indicates to the C program that the strtouq() routine is available.
1421
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1422d_strxfrm (d_strxfrm.U):
1423 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1424 available to transform strings.
1425
1426d_suidsafe (d_dosuid.U):
1427 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1428 if setuid scripts can be secure. This test looks in /dev/fd/.
1429
1430d_symlink (d_symlink.U):
1431 This variable conditionally defines the HAS_SYMLINK symbol, which
1432 indicates to the C program that the symlink() routine is available
1433 to create symbolic links.
1434
1435d_syscall (d_syscall.U):
1436 This variable conditionally defines HAS_SYSCALL if syscall() is
1437 available call arbitrary system calls.
1438
1439d_sysconf (d_sysconf.U):
1440 This variable conditionally defines the HAS_SYSCONF symbol, which
1441 indicates to the C program that the sysconf() routine is available
1442 to determine system related limits and options.
1443
1444d_sysernlst (d_strerror.U):
1445 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1446 is available to translate error numbers to the symbolic name.
1447
1448d_syserrlst (d_strerror.U):
1449 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1450 available to translate error numbers to strings.
1451
1452d_system (d_system.U):
1453 This variable conditionally defines HAS_SYSTEM if system() is
1454 available to issue a shell command.
1455
1456d_tcgetpgrp (d_tcgtpgrp.U):
1457 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1458 indicates to the C program that the tcgetpgrp() routine is available.
1459 to get foreground process group ID.
1460
1461d_tcsetpgrp (d_tcstpgrp.U):
1462 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1463 indicates to the C program that the tcsetpgrp() routine is available
1464 to set foreground process group ID.
1465
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1466d_telldir (d_readdir.U):
1467 This variable conditionally defines HAS_TELLDIR if telldir() is
1468 available.
1469
1470d_telldirproto (d_telldirproto.U):
1471 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1472 which indicates to the C program that the system provides
1473 a prototype for the telldir() function. Otherwise, it is
1474 up to the program to supply one.
1475
1476d_time (d_time.U):
1477 This variable conditionally defines the HAS_TIME symbol, which indicates
1478 that the time() routine exists. The time() routine is normaly
1479 provided on UNIX systems.
1480
1481d_times (d_times.U):
1482 This variable conditionally defines the HAS_TIMES symbol, which indicates
1483 that the times() routine exists. The times() routine is normaly
1484 provided on UNIX systems. You may have to include <sys/times.h>.
1485
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1486d_truncate (d_truncate.U):
1487 This variable conditionally defines HAS_TRUNCATE if truncate() is
1488 available to truncate files.
1489
1490d_tzname (d_tzname.U):
1491 This variable conditionally defines HAS_TZNAME if tzname[] is
1492 available to access timezone names.
1493
1494d_umask (d_umask.U):
1495 This variable conditionally defines the HAS_UMASK symbol, which
1496 indicates to the C program that the umask() routine is available.
1497 to set and get the value of the file creation mask.
1498
1499d_uname (d_gethname.U):
1500 This variable conditionally defines the HAS_UNAME symbol, which
1501 indicates to the C program that the uname() routine may be
1502 used to derive the host name.
1503
1504d_union_semun (d_union_semun.U):
1505 This variable conditionally defines HAS_UNION_SEMUN if the
1506 union semun is defined by including <sys/sem.h>.
1507
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1508d_ustat (d_ustat.U):
1509 This variable conditionally defines HAS_USTAT if ustat() is
1510 available to query file system statistics by dev_t.
1511
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JH
1512d_vendorbin (vendorbin.U):
1513 This variable conditionally defines PERL_VENDORBIN.
1514
a3635516
JH
1515d_vendorlib (vendorlib.U):
1516 This variable conditionally defines PERL_VENDORLIB.
1517
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1518d_vfork (d_vfork.U):
1519 This variable conditionally defines the HAS_VFORK symbol, which
1520 indicates the vfork() routine is available.
1521
1522d_void_closedir (d_closedir.U):
1523 This variable conditionally defines VOID_CLOSEDIR if closedir()
1524 does not return a value.
1525
1526d_voidsig (d_voidsig.U):
1527 This variable conditionally defines VOIDSIG if this system
1528 declares "void (*signal(...))()" in signal.h. The old way was to
1529 declare it as "int (*signal(...))()".
1530
1531d_voidtty (i_sysioctl.U):
1532 This variable conditionally defines USE_IOCNOTTY to indicate that the
1533 ioctl() call with TIOCNOTTY should be used to void tty association.
1534 Otherwise (on USG probably), it is enough to close the standard file
1535 decriptors and do a setpgrp().
1536
1537d_volatile (d_volatile.U):
1538 This variable conditionally defines the HASVOLATILE symbol, which
1539 indicates to the C program that this C compiler knows about the
1540 volatile declaration.
1541
1542d_vprintf (d_vprintf.U):
1543 This variable conditionally defines the HAS_VPRINTF symbol, which
1544 indicates to the C program that the vprintf() routine is available
1545 to printf with a pointer to an argument list.
1546
1547d_wait4 (d_wait4.U):
1548 This variable conditionally defines the HAS_WAIT4 symbol, which
1549 indicates the wait4() routine is available.
1550
1551d_waitpid (d_waitpid.U):
1552 This variable conditionally defines HAS_WAITPID if waitpid() is
1553 available to wait for child process.
1554
1555d_wcstombs (d_wcstombs.U):
1556 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1557 indicates to the C program that the wcstombs() routine is available
1558 to convert wide character strings to multibyte strings.
1559
1560d_wctomb (d_wctomb.U):
1561 This variable conditionally defines the HAS_WCTOMB symbol, which
1562 indicates to the C program that the wctomb() routine is available
1563 to convert a wide character to a multibyte.
1564
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1565d_xenix (Guess.U):
1566 This variable conditionally defines the symbol XENIX, which alerts
1567 the C program that it runs under Xenix.
1568
1569date (Loc.U):
5bf26616 1570 This variable is used internally by Configure to determine the
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1571 full pathname (if any) of the date program. After Configure runs,
1572 the value is reset to a plain "date" and is not useful.
1573
1574db_hashtype (i_db.U):
1575 This variable contains the type of the hash structure element
1576 in the <db.h> header file. In older versions of DB, it was
1577 int, while in newer ones it is u_int32_t.
1578
1579db_prefixtype (i_db.U):
1580 This variable contains the type of the prefix structure element
1581 in the <db.h> header file. In older versions of DB, it was
1582 int, while in newer ones it is size_t.
1583
1584defvoidused (voidflags.U):
1585 This variable contains the default value of the VOIDUSED symbol (15).
1586
1587direntrytype (i_dirent.U):
1588 This symbol is set to 'struct direct' or 'struct dirent' depending on
1589 whether dirent is available or not. You should use this pseudo type to
1590 portably declare your directory entries.
1591
1592dlext (dlext.U):
1593 This variable contains the extension that is to be used for the
1594 dynamically loaded modules that perl generaties.
1595
1596dlsrc (dlsrc.U):
1597 This variable contains the name of the dynamic loading file that
1598 will be used with the package.
1599
1600doublesize (doublesize.U):
1601 This variable contains the value of the DOUBLESIZE symbol, which
1602 indicates to the C program how many bytes there are in a double.
1603
1604drand01 (randfunc.U):
1605 Indicates the macro to be used to generate normalized
1606 random numbers. Uses randfunc, often divided by
1607 (double) (((unsigned long) 1 << randbits)) in order to
1608 normalize the result.
1609 In C programs, the macro 'Drand01' is mapped to drand01.
1610
1611dynamic_ext (Extensions.U):
1612 This variable holds a list of XS extension files we want to
1613 link dynamically into the package. It is used by Makefile.
1614
1615eagain (nblock_io.U):
1616 This variable bears the symbolic errno code set by read() when no
1617 data is present on the file and non-blocking I/O was enabled (otherwise,
1618 read() blocks naturally).
1619
1620ebcdic (ebcdic.U):
1621 This variable conditionally defines EBCDIC if this
1622 system uses EBCDIC encoding. Among other things, this
1623 means that the character ranges are not contiguous.
1624 See trnl.U
1625
1626echo (Loc.U):
5bf26616 1627 This variable is used internally by Configure to determine the
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JH
1628 full pathname (if any) of the echo program. After Configure runs,
1629 the value is reset to a plain "echo" and is not useful.
1630
1631egrep (Loc.U):
5bf26616 1632 This variable is used internally by Configure to determine the
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JH
1633 full pathname (if any) of the egrep program. After Configure runs,
1634 the value is reset to a plain "egrep" and is not useful.
1635
1636emacs (Loc.U):
1637 This variable is defined but not used by Configure.
1638 The value is a plain '' and is not useful.
1639
1640eunicefix (Init.U):
1641 When running under Eunice this variable contains a command which will
1642 convert a shell script to the proper form of text file for it to be
1643 executable by the shell. On other systems it is a no-op.
1644
1645exe_ext (Unix.U):
1646 This is an old synonym for _exe.
1647
1648expr (Loc.U):
5bf26616 1649 This variable is used internally by Configure to determine the
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JH
1650 full pathname (if any) of the expr program. After Configure runs,
1651 the value is reset to a plain "expr" and is not useful.
1652
1653extensions (Extensions.U):
1654 This variable holds a list of all extension files (both XS and
1655 non-xs linked into the package. It is propagated to Config.pm
1656 and is typically used to test whether a particular extesion
1657 is available.
1658
1659fflushall (fflushall.U):
1660 This symbol, if defined, tells that to flush
1661 all pending stdio output one must loop through all
1662 the stdio file handles stored in an array and fflush them.
1663 Note that if fflushNULL is defined, fflushall will not
1664 even be probed for and will be left undefined.
1665
ff935051
JH
1666fflushNULL (fflushall.U):
1667 This symbol, if defined, tells that fflush(NULL) does flush
1668 all pending stdio output.
1669
781b178c 1670find (Loc.U):
ff935051
JH
1671 This variable is defined but not used by Configure.
1672 The value is a plain '' and is not useful.
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1673
1674firstmakefile (Unix.U):
1675 This variable defines the first file searched by make. On unix,
1676 it is makefile (then Makefile). On case-insensitive systems,
1677 it might be something else. This is only used to deal with
1678 convoluted make depend tricks.
1679
1680flex (Loc.U):
1681 This variable is defined but not used by Configure.
1682 The value is a plain '' and is not useful.
1683
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JH
1684fpossize (fpossize.U):
1685 This variable contains the size of a fpostype in bytes.
1686
781b178c 1687fpostype (fpostype.U):
a22e52b9 1688 This variable defines Fpos_t to be something like fpos_t, long,
781b178c
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1689 uint, or whatever type is used to declare file positions in libc.
1690
1691freetype (mallocsrc.U):
1692 This variable contains the return type of free(). It is usually
1693 void, but occasionally int.
1694
1695full_ar (Loc_ar.U):
1696 This variable contains the full pathname to 'ar', whether or
1697 not the user has specified 'portability'. This is only used
1698 in the Makefile.SH.
1699
1700full_csh (d_csh.U):
1701 This variable contains the full pathname to 'csh', whether or
1702 not the user has specified 'portability'. This is only used
1703 in the compiled C program, and we assume that all systems which
1704 can share this executable will have the same full pathname to
1705 'csh.'
1706
1707full_sed (Loc_sed.U):
1708 This variable contains the full pathname to 'sed', whether or
1709 not the user has specified 'portability'. This is only used
1710 in the compiled C program, and we assume that all systems which
1711 can share this executable will have the same full pathname to
1712 'sed.'
1713
1714gccversion (cc.U):
1715 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1716 indicate whether the compiler is version 1 or 2. This is used in
1717 setting some of the default cflags. It is set to '' if not gcc.
1718
a22e52b9
JH
1719gidformat (gidf.U):
1720 This variable contains the format string used for printing a Gid_t.
1721
785fb66b
JH
1722gidsign (gidsign.U):
1723 This variable contains the signedness of a gidtype.
1724 1 for unsigned, -1 for signed.
1725
1726gidsize (gidsize.U):
1727 This variable contains the size of a gidtype in bytes.
1728
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1729gidtype (gidtype.U):
1730 This variable defines Gid_t to be something like gid_t, int,
1731 ushort, or whatever type is used to declare the return type
1732 of getgid(). Typically, it is the type of group ids in the kernel.
1733
1734glibpth (libpth.U):
1735 This variable holds the general path (space-separated) used to
1736 find libraries. It may contain directories that do not exist on
1737 this platform, libpth is the cleaned-up version.
1738
1739grep (Loc.U):
5bf26616 1740 This variable is used internally by Configure to determine the
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1741 full pathname (if any) of the grep program. After Configure runs,
1742 the value is reset to a plain "grep" and is not useful.
1743
1744groupcat (nis.U):
1745 This variable contains a command that produces the text of the
1746 /etc/group file. This is normally "cat /etc/group", but can be
1747 "ypcat group" when NIS is used.
aaacdc8b
GS
1748 On some systems, such as os390, there may be no equivalent
1749 command, in which case this variable is unset.
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1750
1751groupstype (groupstype.U):
1752 This variable defines Groups_t to be something like gid_t, int,
1753 ushort, or whatever type is used for the second argument to
1754 getgroups() and setgroups(). Usually, this is the same as
1755 gidtype (gid_t), but sometimes it isn't.
1756
1757gzip (Loc.U):
5bf26616 1758 This variable is used internally by Configure to determine the
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1759 full pathname (if any) of the gzip program. After Configure runs,
1760 the value is reset to a plain "gzip" and is not useful.
1761
1762h_fcntl (h_fcntl.U):
1763 This is variable gets set in various places to tell i_fcntl that
1764 <fcntl.h> should be included.
1765
1766h_sysfile (h_sysfile.U):
1767 This is variable gets set in various places to tell i_sys_file that
1768 <sys/file.h> should be included.
1769
1770hint (Oldconfig.U):
1771 Gives the type of hints used for previous answers. May be one of
1772 "default", "recommended" or "previous".
1773
1774hostcat (nis.U):
1775 This variable contains a command that produces the text of the
1776 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1777 "ypcat hosts" when NIS is used.
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1778 On some systems, such as os390, there may be no equivalent
1779 command, in which case this variable is unset.
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1780
1781huge (models.U):
1782 This variable contains a flag which will tell the C compiler and loader
1783 to produce a program running with a huge memory model. If the
1784 huge model is not supported, contains the flag to produce large
1785 model programs. It is up to the Makefile to use this.
1786
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1787i16size (perlxv.U):
1788 This variable is the size of an I16 in bytes.
1789
1790i16type (perlxv.U):
1791 This variable contains the C type used for Perl's I16.
1792
1793i32size (perlxv.U):
1794 This variable is the size of an I32 in bytes.
1795
1796i32type (perlxv.U):
1797 This variable contains the C type used for Perl's I32.
1798
1799i64size (perlxv.U):
1800 This variable is the size of an I64 in bytes.
1801
1802i64type (perlxv.U):
1803 This variable contains the C type used for Perl's I64.
1804
1805i8size (perlxv.U):
1806 This variable is the size of an I8 in bytes.
1807
1808i8type (perlxv.U):
1809 This variable contains the C type used for Perl's I8.
1810
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1811i_arpainet (i_arpainet.U):
1812 This variable conditionally defines the I_ARPA_INET symbol,
1813 and indicates whether a C program should include <arpa/inet.h>.
1814
1815i_bsdioctl (i_sysioctl.U):
1816 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1817 indicates to the C program that <sys/bsdioctl.h> exists and should
1818 be included.
1819
1820i_db (i_db.U):
1821 This variable conditionally defines the I_DB symbol, and indicates
1822 whether a C program may include Berkeley's DB include file <db.h>.
1823
1824i_dbm (i_dbm.U):
1825 This variable conditionally defines the I_DBM symbol, which
1826 indicates to the C program that <dbm.h> exists and should
1827 be included.
1828
1829i_dirent (i_dirent.U):
1830 This variable conditionally defines I_DIRENT, which indicates
1831 to the C program that it should include <dirent.h>.
1832
1833i_dld (i_dld.U):
1834 This variable conditionally defines the I_DLD symbol, which
1835 indicates to the C program that <dld.h> (GNU dynamic loading)
1836 exists and should be included.
1837
1838i_dlfcn (i_dlfcn.U):
1839 This variable conditionally defines the I_DLFCN symbol, which
1840 indicates to the C program that <dlfcn.h> exists and should
1841 be included.
1842
1843i_fcntl (i_fcntl.U):
1844 This variable controls the value of I_FCNTL (which tells
1845 the C program to include <fcntl.h>).
1846
1847i_float (i_float.U):
1848 This variable conditionally defines the I_FLOAT symbol, and indicates
1849 whether a C program may include <float.h> to get symbols like DBL_MAX
1850 or DBL_MIN, i.e. machine dependent floating point values.
1851
1852i_gdbm (i_gdbm.U):
1853 This variable conditionally defines the I_GDBM symbol, which
1854 indicates to the C program that <gdbm.h> exists and should
1855 be included.
1856
1857i_grp (i_grp.U):
1858 This variable conditionally defines the I_GRP symbol, and indicates
1859 whether a C program should include <grp.h>.
1860
1861i_inttypes (i_inttypes.U):
1862 This variable conditionally defines the I_INTTYPES symbol,
1863 and indicates whether a C program should include <inttypes.h>.
1864
1865i_limits (i_limits.U):
1866 This variable conditionally defines the I_LIMITS symbol, and indicates
1867 whether a C program may include <limits.h> to get symbols like WORD_BIT
1868 and friends.
1869
1870i_locale (i_locale.U):
1871 This variable conditionally defines the I_LOCALE symbol,
1872 and indicates whether a C program should include <locale.h>.
1873
1874i_machcthr (i_machcthr.U):
1875 This variable conditionally defines the I_MACH_CTHREADS symbol,
1876 and indicates whether a C program should include <mach/cthreads.h>.
1877
1878i_malloc (i_malloc.U):
1879 This variable conditionally defines the I_MALLOC symbol, and indicates
1880 whether a C program should include <malloc.h>.
1881
1882i_math (i_math.U):
1883 This variable conditionally defines the I_MATH symbol, and indicates
1884 whether a C program may include <math.h>.
1885
1886i_memory (i_memory.U):
1887 This variable conditionally defines the I_MEMORY symbol, and indicates
1888 whether a C program should include <memory.h>.
1889
1890i_mntent (i_mntent.U):
1891 This variable conditionally defines the I_MNTENT symbol, and indicates
1892 whether a C program should include <mntent.h>.
1893
1894i_ndbm (i_ndbm.U):
1895 This variable conditionally defines the I_NDBM symbol, which
1896 indicates to the C program that <ndbm.h> exists and should
1897 be included.
1898
1899i_netdb (i_netdb.U):
1900 This variable conditionally defines the I_NETDB symbol, and indicates
1901 whether a C program should include <netdb.h>.
1902
1903i_neterrno (i_neterrno.U):
1904 This variable conditionally defines the I_NET_ERRNO symbol, which
1905 indicates to the C program that <net/errno.h> exists and should
1906 be included.
1907
1908i_netinettcp (i_netinettcp.U):
1909 This variable conditionally defines the I_NETINET_TCP symbol,
1910 and indicates whether a C program should include <netinet/tcp.h>.
1911
1912i_niin (i_niin.U):
1913 This variable conditionally defines I_NETINET_IN, which indicates
1914 to the C program that it should include <netinet/in.h>. Otherwise,
1915 you may try <sys/in.h>.
1916
1917i_poll (i_poll.U):
1918 This variable conditionally defines the I_POLL symbol, and indicates
1919 whether a C program should include <poll.h>.
1920
1921i_pthread (i_pthread.U):
190b66db 1922 This variable conditionally defines the I_PTHREAD symbol,
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1923 and indicates whether a C program should include <pthread.h>.
1924
1925i_pwd (i_pwd.U):
1926 This variable conditionally defines I_PWD, which indicates
1927 to the C program that it should include <pwd.h>.
1928
1929i_rpcsvcdbm (i_dbm.U):
1930 This variable conditionally defines the I_RPCSVC_DBM symbol, which
1931 indicates to the C program that <rpcsvc/dbm.h> exists and should
1932 be included. Some System V systems might need this instead of <dbm.h>.
1933
1934i_sfio (i_sfio.U):
1935 This variable conditionally defines the I_SFIO symbol,
1936 and indicates whether a C program should include <sfio.h>.
1937
1938i_sgtty (i_termio.U):
1939 This variable conditionally defines the I_SGTTY symbol, which
1940 indicates to the C program that it should include <sgtty.h> rather
1941 than <termio.h>.
1942
1943i_shadow (i_shadow.U):
1944 This variable conditionally defines the I_SHADOW symbol, and indicates
1945 whether a C program should include <shadow.h>.
1946
1947i_socks (i_socks.U):
1948 This variable conditionally defines the I_SOCKS symbol, and indicates
1949 whether a C program should include <socks.h>.
1950
1951i_stdarg (i_varhdr.U):
1952 This variable conditionally defines the I_STDARG symbol, which
1953 indicates to the C program that <stdarg.h> exists and should
1954 be included.
1955
1956i_stddef (i_stddef.U):
1957 This variable conditionally defines the I_STDDEF symbol, which
1958 indicates to the C program that <stddef.h> exists and should
1959 be included.
1960
1961i_stdlib (i_stdlib.U):
1962 This variable conditionally defines the I_STDLIB symbol, which
1963 indicates to the C program that <stdlib.h> exists and should
1964 be included.
1965
1966i_string (i_string.U):
1967 This variable conditionally defines the I_STRING symbol, which
1968 indicates that <string.h> should be included rather than <strings.h>.
1969
1970i_sysaccess (i_sysaccess.U):
1971 This variable conditionally defines the I_SYS_ACCESS symbol,
1972 and indicates whether a C program should include <sys/access.h>.
1973
1974i_sysdir (i_sysdir.U):
1975 This variable conditionally defines the I_SYS_DIR symbol, and indicates
1976 whether a C program should include <sys/dir.h>.
1977
1978i_sysfile (i_sysfile.U):
1979 This variable conditionally defines the I_SYS_FILE symbol, and indicates
1980 whether a C program should include <sys/file.h> to get R_OK and friends.
1981
1982i_sysfilio (i_sysioctl.U):
1983 This variable conditionally defines the I_SYS_FILIO symbol, which
1984 indicates to the C program that <sys/filio.h> exists and should
1985 be included in preference to <sys/ioctl.h>.
1986
1987i_sysin (i_niin.U):
1988 This variable conditionally defines I_SYS_IN, which indicates
1989 to the C program that it should include <sys/in.h> instead of
1990 <netinet/in.h>.
1991
1992i_sysioctl (i_sysioctl.U):
1993 This variable conditionally defines the I_SYS_IOCTL symbol, which
1994 indicates to the C program that <sys/ioctl.h> exists and should
1995 be included.
1996
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1997i_sysmount (i_sysmount.U):
1998 This variable conditionally defines the I_SYSMOUNT symbol,
1999 and indicates whether a C program should include <sys/mount.h>.
2000
2001i_sysndir (i_sysndir.U):
2002 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2003 whether a C program should include <sys/ndir.h>.
2004
2005i_sysparam (i_sysparam.U):
2006 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2007 whether a C program should include <sys/param.h>.
2008
2009i_sysresrc (i_sysresrc.U):
2010 This variable conditionally defines the I_SYS_RESOURCE symbol,
2011 and indicates whether a C program should include <sys/resource.h>.
2012
2013i_syssecrt (i_syssecrt.U):
2014 This variable conditionally defines the I_SYS_SECURITY symbol,
2015 and indicates whether a C program should include <sys/security.h>.
2016
2017i_sysselct (i_sysselct.U):
2018 This variable conditionally defines I_SYS_SELECT, which indicates
2019 to the C program that it should include <sys/select.h> in order to
2020 get the definition of struct timeval.
2021
2022i_syssockio (i_sysioctl.U):
2023 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2024 C program that socket ioctl codes may be found in <sys/sockio.h>
2025 instead of <sys/ioctl.h>.
2026
2027i_sysstat (i_sysstat.U):
2028 This variable conditionally defines the I_SYS_STAT symbol,
2029 and indicates whether a C program should include <sys/stat.h>.
2030
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2031i_sysstatfs (i_sysstatfs.U):
2032 This variable conditionally defines the I_SYSSTATFS symbol,
2033 and indicates whether a C program should include <sys/statfs.h>.
2034
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2035i_sysstatvfs (i_sysstatvfs.U):
2036 This variable conditionally defines the I_SYSSTATVFS symbol,
2037 and indicates whether a C program should include <sys/statvfs.h>.
2038
2039i_systime (i_time.U):
2040 This variable conditionally defines I_SYS_TIME, which indicates
2041 to the C program that it should include <sys/time.h>.
2042
2043i_systimek (i_time.U):
2044 This variable conditionally defines I_SYS_TIME_KERNEL, which
2045 indicates to the C program that it should include <sys/time.h>
2046 with KERNEL defined.
2047
2048i_systimes (i_systimes.U):
2049 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2050 whether a C program should include <sys/times.h>.
2051
2052i_systypes (i_systypes.U):
2053 This variable conditionally defines the I_SYS_TYPES symbol,
2054 and indicates whether a C program should include <sys/types.h>.
2055
2056i_sysuio (i_sysuio.U):
2057 This variable conditionally defines the I_SYSUIO symbol, and indicates
2058 whether a C program should include <sys/uio.h>.
2059
2060i_sysun (i_sysun.U):
2061 This variable conditionally defines I_SYS_UN, which indicates
2062 to the C program that it should include <sys/un.h> to get UNIX
2063 domain socket definitions.
2064
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2065i_sysvfs (i_sysvfs.U):
2066 This variable conditionally defines the I_SYSVFS symbol,
2067 and indicates whether a C program should include <sys/vfs.h>.
2068
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2069i_syswait (i_syswait.U):
2070 This variable conditionally defines I_SYS_WAIT, which indicates
2071 to the C program that it should include <sys/wait.h>.
2072
2073i_termio (i_termio.U):
2074 This variable conditionally defines the I_TERMIO symbol, which
2075 indicates to the C program that it should include <termio.h> rather
2076 than <sgtty.h>.
2077
2078i_termios (i_termio.U):
2079 This variable conditionally defines the I_TERMIOS symbol, which
2080 indicates to the C program that the POSIX <termios.h> file is
2081 to be included.
2082
2083i_time (i_time.U):
2084 This variable conditionally defines I_TIME, which indicates
2085 to the C program that it should include <time.h>.
2086
2087i_unistd (i_unistd.U):
2088 This variable conditionally defines the I_UNISTD symbol, and indicates
2089 whether a C program should include <unistd.h>.
2090
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2091i_ustat (i_ustat.U):
2092 This variable conditionally defines the I_USTAT symbol, and indicates
2093 whether a C program should include <ustat.h>.
2094
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2095i_utime (i_utime.U):
2096 This variable conditionally defines the I_UTIME symbol, and indicates
2097 whether a C program should include <utime.h>.
2098
2099i_values (i_values.U):
2100 This variable conditionally defines the I_VALUES symbol, and indicates
2101 whether a C program may include <values.h> to get symbols like MAXLONG
2102 and friends.
2103
2104i_varargs (i_varhdr.U):
2105 This variable conditionally defines I_VARARGS, which indicates
2106 to the C program that it should include <varargs.h>.
2107
2108i_varhdr (i_varhdr.U):
2109 Contains the name of the header to be included to get va_dcl definition.
2110 Typically one of varargs.h or stdarg.h.
2111
2112i_vfork (i_vfork.U):
2113 This variable conditionally defines the I_VFORK symbol, and indicates
2114 whether a C program should include vfork.h.
2115
2116ignore_versioned_solibs (libs.U):
2117 This variable should be non-empty if non-versioned shared
2118 libraries (libfoo.so.x.y) are to be ignored (because they
2119 cannot be linked against).
2120
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2121inc_version_list (inc_version_list.U):
2122 This variable specifies the list of subdirectories in over
2123 which perl.c:incpush() and lib/lib.pm will automatically
2124 search when adding directories to @INC. This is only useful
2125 if you have a perl library directory tree structured like the
2126 default one. See INSTALL for how this works. The versioned
2127 site_perl directory was introduced in 5.005, so that is the
2128 lowest possible value.
2129
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2130incpath (usrinc.U):
2131 This variable must preceed the normal include path to get hte
2132 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2133 Value can be "" or "/bsd43" on mips.
2134
2135inews (Loc.U):
2136 This variable is defined but not used by Configure.
2137 The value is a plain '' and is not useful.
2138
2139installarchlib (archlib.U):
2140 This variable is really the same as archlibexp but may differ on
2141 those systems using AFS. For extra portability, only this variable
2142 should be used in makefiles.
2143
2144installbin (bin.U):
2145 This variable is the same as binexp unless AFS is running in which case
2146 the user is explicitely prompted for it. This variable should always
2147 be used in your makefiles for maximum portability.
2148
2149installman1dir (man1dir.U):
2150 This variable is really the same as man1direxp, unless you are using
2151 AFS in which case it points to the read/write location whereas
2152 man1direxp only points to the read-only access location. For extra
2153 portability, you should only use this variable within your makefiles.
2154
2155installman3dir (man3dir.U):
2156 This variable is really the same as man3direxp, unless you are using
2157 AFS in which case it points to the read/write location whereas
2158 man3direxp only points to the read-only access location. For extra
2159 portability, you should only use this variable within your makefiles.
2160
2161installprefix (installprefix.U):
2162 This variable holds the name of the directory below which
2163 "make install" will install the package. For most users, this
2164 is the same as prefix. However, it is useful for
2165 installing the software into a different (usually temporary)
2166 location after which it can be bundled up and moved somehow
2167 to the final location specified by prefix.
2168
2169installprefixexp (installprefix.U):
2170 This variable holds the full absolute path of installprefix
2171 with all ~-expansion done.
2172
2173installprivlib (privlib.U):
2174 This variable is really the same as privlibexp but may differ on
2175 those systems using AFS. For extra portability, only this variable
2176 should be used in makefiles.
2177
2178installscript (scriptdir.U):
2179 This variable is usually the same as scriptdirexp, unless you are on
2180 a system running AFS, in which case they may differ slightly. You
2181 should always use this variable within your makefiles for portability.
2182
2183installsitearch (sitearch.U):
2184 This variable is really the same as sitearchexp but may differ on
2185 those systems using AFS. For extra portability, only this variable
2186 should be used in makefiles.
2187
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2188installsitebin (sitebin.U):
2189 This variable is usually the same as sitebinexp, unless you are on
2190 a system running AFS, in which case they may differ slightly. You
2191 should always use this variable within your makefiles for portability.
2192
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2193installsitelib (sitelib.U):
2194 This variable is really the same as sitelibexp but may differ on
2195 those systems using AFS. For extra portability, only this variable
2196 should be used in makefiles.
2197
2198installstyle (installstyle.U):
2199 This variable describes the "style" of the perl installation.
2200 This is intended to be useful for tools that need to
2201 manipulate entire perl distributions. Perl itself doesn't use
2202 this to find its libraries -- the library directories are
2203 stored directly in Config.pm. Currently, there are only two
2204 styles: "lib" and "lib/perl5". The default library locations
2205 (e.g. privlib, sitelib) are either $prefix/lib or
2206 $prefix/lib/perl5. The former is useful if $prefix is a
2207 directory dedicated to perl (e.g. /opt/perl), while the latter
2208 is useful if $prefix is shared by many packages, e.g. if
2209 $prefix=/usr/local.
2210 This may later be extended to include other information, so
2211 be careful with pattern-matching on the results.
2212 For compatibility with perl5.005 and earlier, the default
2213 setting is based on whether or not $prefix contains the string
2214 "perl".
2215
2216installusrbinperl (instubperl.U):
2217 This variable tells whether Perl should be installed also as
2218 /usr/bin/perl in addition to
2219 $installbin/perl
2220
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2221installvendorbin (vendorbin.U):
2222 This variable is really the same as vendorbinexp but may differ on
2223 those systems using AFS. For extra portability, only this variable
2224 should be used in makefiles.
2225
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2226installvendorlib (vendorlib.U):
2227 This variable is really the same as vendorlibexp but may differ on
2228 those systems using AFS. For extra portability, only this variable
2229 should be used in makefiles.
2230
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2231intsize (intsize.U):
2232 This variable contains the value of the INTSIZE symbol, which
2233 indicates to the C program how many bytes there are in an int.
2234
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2235ivdformat (perlxvf.U):
2236 This variable contains the format string used for printing
2237 a Perl IV as a signed decimal integer.
2238
2239ivsize (perlxv.U):
2240 This variable is the size of an IV in bytes.
2241
2242ivtype (perlxv.U):
2243 This variable contains the C type used for Perl's IV.
2244
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2245known_extensions (Extensions.U):
2246 This variable holds a list of all XS extensions included in
2247 the package.
2248
2249ksh (Loc.U):
2250 This variable is defined but not used by Configure.
2251 The value is a plain '' and is not useful.
2252
2253large (models.U):
2254 This variable contains a flag which will tell the C compiler and loader
2255 to produce a program running with a large memory model. It is up to
2256 the Makefile to use this.
2257
2258ld (dlsrc.U):
2259 This variable indicates the program to be used to link
2260 libraries for dynamic loading. On some systems, it is 'ld'.
2261 On ELF systems, it should be $cc. Mostly, we'll try to respect
2262 the hint file setting.
2263
2264lddlflags (dlsrc.U):
2265 This variable contains any special flags that might need to be
2266 passed to $ld to create a shared library suitable for dynamic
2267 loading. It is up to the makefile to use it. For hpux, it
2268 should be '-b'. For sunos 4.1, it is empty.
2269
2270ldflags (ccflags.U):
2271 This variable contains any additional C loader flags desired by
2272 the user. It is up to the Makefile to use this.
2273
2274ldlibpthname (libperl.U):
2275 This variable holds the name of the shared library
2276 search path, often LD_LIBRARY_PATH. To get an empty
2277 string, the hints file must set this to 'none'.
2278
2279less (Loc.U):
5bf26616 2280 This variable is used internally by Configure to determine the
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2281 full pathname (if any) of the less program. After Configure runs,
2282 the value is reset to a plain "less" and is not useful.
2283
2284lib_ext (Unix.U):
2285 This is an old synonym for _a.
2286
2287libc (libc.U):
2288 This variable contains the location of the C library.
2289
2290libperl (libperl.U):
2291 The perl executable is obtained by linking perlmain.c with
2292 libperl, any static extensions (usually just DynaLoader),
2293 and any other libraries needed on this system. libperl
2294 is usually libperl.a, but can also be libperl.so.xxx if
2295 the user wishes to build a perl executable with a shared
2296 library.
2297
2298libpth (libpth.U):
2299 This variable holds the general path (space-separated) used to find
2300 libraries. It is intended to be used by other units.
2301
2302libs (libs.U):
2303 This variable holds the additional libraries we want to use.
2304 It is up to the Makefile to deal with it.
2305
2306libswanted (Myinit.U):
2307 This variable holds a list of all the libraries we want to
2308 search. The order is chosen to pick up the c library
2309 ahead of ucb or bsd libraries for SVR4.
2310
2311line (Loc.U):
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2312 This variable is defined but not used by Configure.
2313 The value is a plain '' and is not useful.
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2314
2315lint (Loc.U):
2316 This variable is defined but not used by Configure.
2317 The value is a plain '' and is not useful.
2318
2319lkflags (ccflags.U):
2320 This variable contains any additional C partial linker flags desired by
2321 the user. It is up to the Makefile to use this.
2322
2323ln (Loc.U):
5bf26616 2324 This variable is used internally by Configure to determine the
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2325 full pathname (if any) of the ln program. After Configure runs,
2326 the value is reset to a plain "ln" and is not useful.
2327
2328lns (lns.U):
2329 This variable holds the name of the command to make
2330 symbolic links (if they are supported). It can be used
2331 in the Makefile. It is either 'ln -s' or 'ln'
2332
2333locincpth (ccflags.U):
2334 This variable contains a list of additional directories to be
2335 searched by the compiler. The appropriate '-I' directives will
2336 be added to ccflags. This is intended to simplify setting
2337 local directories from the Configure command line.
2338 It's not much, but it parallels the loclibpth stuff in libpth.U.
2339
2340loclibpth (libpth.U):
2341 This variable holds the paths (space-separated) used to find local
2342 libraries. It is prepended to libpth, and is intended to be easily
2343 set from the command line.
2344
2345longdblsize (d_longdbl.U):
2346 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2347 indicates to the C program how many bytes there are in a long double,
2348 if this system supports long doubles.
2349
2350longlongsize (d_longlong.U):
2351 This variable contains the value of the LONGLONGSIZE symbol, which
2352 indicates to the C program how many bytes there are in a long long,
2353 if this system supports long long.
2354
2355longsize (intsize.U):
2356 This variable contains the value of the LONGSIZE symbol, which
2357 indicates to the C program how many bytes there are in a long.
2358
2359lp (Loc.U):
2360 This variable is defined but not used by Configure.
2361 The value is a plain '' and is not useful.
2362
2363lpr (Loc.U):
2364 This variable is defined but not used by Configure.
2365 The value is a plain '' and is not useful.
2366
2367ls (Loc.U):
5bf26616 2368 This variable is used internally by Configure to determine the
781b178c
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2369 full pathname (if any) of the ls program. After Configure runs,
2370 the value is reset to a plain "ls" and is not useful.
2371
2372lseeksize (lseektype.U):
2373 This variable defines lseektype to be something like off_t, long,
2374 or whatever type is used to declare lseek offset's type in the
2375 kernel (which also appears to be lseek's return type).
2376
2377lseektype (lseektype.U):
2378 This variable defines lseektype to be something like off_t, long,
2379 or whatever type is used to declare lseek offset's type in the
2380 kernel (which also appears to be lseek's return type).
2381
2382mail (Loc.U):
2383 This variable is defined but not used by Configure.
2384 The value is a plain '' and is not useful.
2385
2386mailx (Loc.U):
2387 This variable is defined but not used by Configure.
2388 The value is a plain '' and is not useful.
2389
2390make (Loc.U):
5bf26616 2391 This variable is used internally by Configure to determine the
781b178c
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2392 full pathname (if any) of the make program. After Configure runs,
2393 the value is reset to a plain "make" and is not useful.
2394
2395make_set_make (make.U):
2396 Some versions of 'make' set the variable MAKE. Others do not.
2397 This variable contains the string to be included in Makefile.SH
2398 so that MAKE is set if needed, and not if not needed.
2399 Possible values are:
2400 make_set_make='#' # If your make program handles this for you,
2401 make_set_make="MAKE=$make" # if it doesn't.
2402 I used a comment character so that we can distinguish a
2403 'set' value (from a previous config.sh or Configure '-D' option)
2404 from an uncomputed value.
2405
2406mallocobj (mallocsrc.U):
2407 This variable contains the name of the malloc.o that this package
2408 generates, if that malloc.o is preferred over the system malloc.
2409 Otherwise the value is null. This variable is intended for generating
2410 Makefiles. See mallocsrc.
2411
2412mallocsrc (mallocsrc.U):
2413 This variable contains the name of the malloc.c that comes with
2414 the package, if that malloc.c is preferred over the system malloc.
2415 Otherwise the value is null. This variable is intended for generating
2416 Makefiles.
2417
2418malloctype (mallocsrc.U):
2419 This variable contains the kind of ptr returned by malloc and realloc.
2420
2421man1dir (man1dir.U):
2422 This variable contains the name of the directory in which manual
2423 source pages are to be put. It is the responsibility of the
2424 Makefile.SH to get the value of this into the proper command.
2425 You must be prepared to do the ~name expansion yourself.
2426
2427man1direxp (man1dir.U):
2428 This variable is the same as the man1dir variable, but is filename
2429 expanded at configuration time, for convenient use in makefiles.
2430
2431man1ext (man1dir.U):
2432 This variable contains the extension that the manual page should
2433 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2434 See man1dir.
2435
2436man3dir (man3dir.U):
2437 This variable contains the name of the directory in which manual
2438 source pages are to be put. It is the responsibility of the
2439 Makefile.SH to get the value of this into the proper command.
2440 You must be prepared to do the ~name expansion yourself.
2441
2442man3direxp (man3dir.U):
2443 This variable is the same as the man3dir variable, but is filename
2444 expanded at configuration time, for convenient use in makefiles.
2445
2446man3ext (man3dir.U):
2447 This variable contains the extension that the manual page should
2448 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2449 See man3dir.
2450
ff935051
JH
2451Mcc (Loc.U):
2452 This variable is used internally by Configure to determine the
2453 full pathname (if any) of the Mcc program. After Configure runs,
2454 the value is reset to a plain "Mcc" and is not useful.
2455
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JH
2456medium (models.U):
2457 This variable contains a flag which will tell the C compiler and loader
2458 to produce a program running with a medium memory model. If the
2459 medium model is not supported, contains the flag to produce large
2460 model programs. It is up to the Makefile to use this.
2461
2462mips_type (usrinc.U):
2463 This variable holds the environment type for the mips system.
2464 Possible values are "BSD 4.3" and "System V".
2465
2466mkdir (Loc.U):
5bf26616 2467 This variable is used internally by Configure to determine the
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2468 full pathname (if any) of the mkdir program. After Configure runs,
2469 the value is reset to a plain "mkdir" and is not useful.
2470
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JH
2471models (models.U):
2472 This variable contains the list of memory models supported by this
2473 system. Possible component values are none, split, unsplit, small,
2474 medium, large, and huge. The component values are space separated.
2475
2476modetype (modetype.U):
2477 This variable defines modetype to be something like mode_t,
2478 int, unsigned short, or whatever type is used to declare file
2479 modes for system calls.
2480
2481more (Loc.U):
5bf26616 2482 This variable is used internally by Configure to determine the
781b178c
JH
2483 full pathname (if any) of the more program. After Configure runs,
2484 the value is reset to a plain "more" and is not useful.
2485
2486multiarch (multiarch.U):
2487 This variable conditionally defines the MULTIARCH symbol
2488 which signifies the presence of multiplatform files.
2489 This is normally set by hints files.
2490
2491mv (Loc.U):
2492 This variable is defined but not used by Configure.
2493 The value is a plain '' and is not useful.
2494
2495myarchname (archname.U):
2496 This variable holds the architecture name computed by Configure in
2497 a previous run. It is not intended to be perused by any user and
2498 should never be set in a hint file.
2499
2500mydomain (myhostname.U):
2501 This variable contains the eventual value of the MYDOMAIN symbol,
2502 which is the domain of the host the program is going to run on.
2503 The domain must be appended to myhostname to form a complete host name.
2504 The dot comes with mydomain, and need not be supplied by the program.
2505
2506myhostname (myhostname.U):
2507 This variable contains the eventual value of the MYHOSTNAME symbol,
2508 which is the name of the host the program is going to run on.
2509 The domain is not kept with hostname, but must be gotten from mydomain.
2510 The dot comes with mydomain, and need not be supplied by the program.
2511
2512myuname (Oldconfig.U):
2513 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2514 pseudo variables assignments in the output are stripped, thank you. The
2515 whole thing is then lower-cased.
2516
2517n (n.U):
2518 This variable contains the '-n' flag if that is what causes the echo
2519 command to suppress newline. Otherwise it is null. Correct usage is
2520 $echo $n "prompt for a question: $c".
2521
2522netdb_hlen_type (netdbtype.U):
2523 This variable holds the type used for the 2nd argument to
2524 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2525 This is only useful if you have gethostbyaddr(), naturally.
2526
2527netdb_host_type (netdbtype.U):
2528 This variable holds the type used for the 1st argument to
2529 gethostbyaddr(). Usually, this is char * or void *, possibly
2530 with or without a const prefix.
2531 This is only useful if you have gethostbyaddr(), naturally.
2532
2533netdb_name_type (netdbtype.U):
2534 This variable holds the type used for the argument to
2535 gethostbyname(). Usually, this is char * or const char *.
2536 This is only useful if you have gethostbyname(), naturally.
2537
2538netdb_net_type (netdbtype.U):
2539 This variable holds the type used for the 1st argument to
2540 getnetbyaddr(). Usually, this is int or long.
2541 This is only useful if you have getnetbyaddr(), naturally.
2542
2543nm (Loc.U):
5bf26616 2544 This variable is used internally by Configure to determine the
781b178c
JH
2545 full pathname (if any) of the nm program. After Configure runs,
2546 the value is reset to a plain "nm" and is not useful.
2547
2548nm_opt (usenm.U):
2549 This variable holds the options that may be necessary for nm.
2550
2551nm_so_opt (usenm.U):
2552 This variable holds the options that may be necessary for nm
2553 to work on a shared library but that can not be used on an
2554 archive library. Currently, this is only used by Linux, where
2555 nm --dynamic is *required* to get symbols from an ELF library which
2556 has been stripped, but nm --dynamic is *fatal* on an archive library.
2557 Maybe Linux should just always set usenm=false.
2558
2559nonxs_ext (Extensions.U):
2560 This variable holds a list of all non-xs extensions included
2561 in the package. All of them will be built.
2562
2563nroff (Loc.U):
5bf26616 2564 This variable is used internally by Configure to determine the
781b178c
JH
2565 full pathname (if any) of the nroff program. After Configure runs,
2566 the value is reset to a plain "nroff" and is not useful.
2567
a22e52b9
JH
2568nvsize (perlxv.U):
2569 This variable is the size of an NV in bytes.
2570
2571nvtype (perlxv.U):
2572 This variable contains the C type used for Perl's NV.
2573
781b178c
JH
2574o_nonblock (nblock_io.U):
2575 This variable bears the symbol value to be used during open() or fcntl()
2576 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2577 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2578 but that is only supported by some devices.
2579
2580obj_ext (Unix.U):
2581 This is an old synonym for _o.
2582
2583old_pthread_create_joinable (d_pthrattrj.U):
2584 This variable defines the constant to use for creating joinable
2585 (aka undetached) pthreads. Unused if pthread.h defines
2586 PTHREAD_CREATE_JOINABLE. If used, possible values are
2587 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2588
2589optimize (ccflags.U):
2590 This variable contains any optimizer/debugger flag that should be used.
2591 It is up to the Makefile to use it.
2592
2593orderlib (orderlib.U):
2594 This variable is "true" if the components of libraries must be ordered
2595 (with `lorder $* | tsort`) before placing them in an archive. Set to
2596 "false" if ranlib or ar can generate random libraries.
2597
2598osname (Oldconfig.U):
2599 This variable contains the operating system name (e.g. sunos,
2600 solaris, hpux, etc.). It can be useful later on for setting
2601 defaults. Any spaces are replaced with underscores. It is set
2602 to a null string if we can't figure it out.
2603
2604osvers (Oldconfig.U):
2605 This variable contains the operating system version (e.g.
2606 4.1.3, 5.2, etc.). It is primarily used for helping select
2607 an appropriate hints file, but might be useful elsewhere for
2608 setting defaults. It is set to '' if we can't figure it out.
2609 We try to be flexible about how much of the version number
2610 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2611 same for this package, hints files might just be os_4.0 or
2612 os_4.1, etc., not keeping separate files for each little release.
2613
2614package (package.U):
2615 This variable contains the name of the package being constructed.
2616 It is primarily intended for the use of later Configure units.
2617
2618pager (pager.U):
2619 This variable contains the name of the preferred pager on the system.
2620 Usual values are (the full pathnames of) more, less, pg, or cat.
2621
2622passcat (nis.U):
2623 This variable contains a command that produces the text of the
2624 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2625 "ypcat passwd" when NIS is used.
aaacdc8b
GS
2626 On some systems, such as os390, there may be no equivalent
2627 command, in which case this variable is unset.
781b178c
JH
2628
2629patchlevel (patchlevel.U):
2630 The patchlevel level of this package.
2631 The value of patchlevel comes from the patchlevel.h file.
ff935051
JH
2632 In a version number such as 5.6.1, this is the "6".
2633 In patchlevel.h, this is referred to as the "PERL_VERSION".
781b178c
JH
2634
2635path_sep (Unix.U):
2636 This is an old synonym for p_ in Head.U, the character
2637 used to separate elements in the command shell search PATH.
2638
2639perl (Loc.U):
aaacdc8b
GS
2640 This variable is used internally by Configure to determine the
2641 full pathname (if any) of the perl program. After Configure runs,
2642 the value is reset to a plain "perl" and is not useful.
781b178c 2643
ff935051
JH
2644PERL_REVISION (Oldsyms.U):
2645 In a Perl version number such as 5.6.2, this is the 5.
2646 This value is manually set in patchlevel.h
2647
2648PERL_SUBVERSION (Oldsyms.U):
2649 In a Perl version number such as 5.6.2, this is the 2.
2650 Values greater than 50 represent potentially unstable
2651 development subversions.
2652 This value is manually set in patchlevel.h
2653
2654PERL_VERSION (Oldsyms.U):
2655 In a Perl version number such as 5.6.2, this is the 6.
2656 This value is manually set in patchlevel.h
2657
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2658perladmin (perladmin.U):
2659 Electronic mail address of the perl5 administrator.
2660
2661perlpath (perlpath.U):
2662 This variable contains the eventual value of the PERLPATH symbol,
2663 which contains the name of the perl interpreter to be used in
2664 shell scripts and in the "eval 'exec'" idiom.
2665
2666pg (Loc.U):
5bf26616 2667 This variable is used internally by Configure to determine the
781b178c
JH
2668 full pathname (if any) of the pg program. After Configure runs,
2669 the value is reset to a plain "pg" and is not useful.
2670
2671phostname (myhostname.U):
2672 This variable contains the eventual value of the PHOSTNAME symbol,
2673 which is a command that can be fed to popen() to get the host name.
2674 The program should probably not presume that the domain is or isn't
2675 there already.
2676
2677pidtype (pidtype.U):
2678 This variable defines PIDTYPE to be something like pid_t, int,
2679 ushort, or whatever type is used to declare process ids in the kernel.
2680
2681plibpth (libpth.U):
2682 Holds the private path used by Configure to find out the libraries.
2683 Its value is prepend to libpth. This variable takes care of special
2684 machines, like the mips. Usually, it should be empty.
2685
2686pmake (Loc.U):
2687 This variable is defined but not used by Configure.
2688 The value is a plain '' and is not useful.
2689
2690pr (Loc.U):
2691 This variable is defined but not used by Configure.
2692 The value is a plain '' and is not useful.
2693
2694prefix (prefix.U):
2695 This variable holds the name of the directory below which the
2696 user will install the package. Usually, this is /usr/local, and
2697 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2698 man pages in /usr/local/man, etc. It is only used to set defaults
2699 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2700
2701prefixexp (prefix.U):
2702 This variable holds the full absolute path of the directory below
2703 which the user will install the package. Derived from prefix.
2704
2705privlib (privlib.U):
2706 This variable contains the eventual value of the PRIVLIB symbol,
2707 which is the name of the private library for this package. It may
2708 have a ~ on the front. It is up to the makefile to eventually create
2709 this directory while performing installation (with ~ substitution).
2710
2711privlibexp (privlib.U):
2712 This variable is the ~name expanded version of privlib, so that you
2713 may use it directly in Makefiles or shell scripts.
2714
2715prototype (prototype.U):
2716 This variable holds the eventual value of CAN_PROTOTYPE, which
2717 indicates the C compiler can handle funciton prototypes.
2718
2719ptrsize (ptrsize.U):
2720 This variable contains the value of the PTRSIZE symbol, which
2721 indicates to the C program how many bytes there are in a pointer.
2722
e0a10278 2723quadkind (quadtype.U):
0befd8de
JH
2724 This variable, if defined, encodes the type of a quad:
2725 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2726
2727quadtype (quadtype.U):
2728 This variable defines Quad_t to be something like long, int,
2729 long long, int64_t, or whatever type is used for 64-bit integers.
2730
781b178c
JH
2731randbits (randfunc.U):
2732 Indicates how many bits are produced by the function used to
2733 generate normalized random numbers.
2734
2735randfunc (randfunc.U):
2736 Indicates the name of the random number function to use.
2737 Values include drand48, random, and rand. In C programs,
2738 the 'Drand01' macro is defined to generate uniformly distributed
2739 random numbers over the range [0., 1.[ (see drand01 and nrand).
2740
2741randseedtype (randfunc.U):
2742 Indicates the type of the argument of the seedfunc.
2743
2744ranlib (orderlib.U):
2745 This variable is set to the pathname of the ranlib program, if it is
2746 needed to generate random libraries. Set to ":" if ar can generate
2747 random libraries or if random libraries are not supported
2748
2749rd_nodata (nblock_io.U):
2750 This variable holds the return code from read() when no data is
2751 present. It should be -1, but some systems return 0 when O_NDELAY is
2752 used, which is a shame because you cannot make the difference between
2753 no data and an EOF.. Sigh!
2754
2755rm (Loc.U):
5bf26616 2756 This variable is used internally by Configure to determine the
781b178c
JH
2757 full pathname (if any) of the rm program. After Configure runs,
2758 the value is reset to a plain "rm" and is not useful.
2759
2760rmail (Loc.U):
2761 This variable is defined but not used by Configure.
2762 The value is a plain '' and is not useful.
2763
2764runnm (usenm.U):
2765 This variable contains 'true' or 'false' depending whether the
2766 nm extraction should be performed or not, according to the value
2767 of usenm and the flags on the Configure command line.
2768
2769sched_yield (d_pthread_y.U):
2770 This variable defines the way to yield the execution
2771 of the current thread.
2772
2773scriptdir (scriptdir.U):
2774 This variable holds the name of the directory in which the user wants
2775 to put publicly scripts for the package in question. It is either
2776 the same directory as for binaries, or a special one that can be
2777 mounted across different architectures, like /usr/share. Programs
2778 must be prepared to deal with ~name expansion.
2779
2780scriptdirexp (scriptdir.U):
2781 This variable is the same as scriptdir, but is filename expanded
2782 at configuration time, for programs not wanting to bother with it.
2783
2784sed (Loc.U):
5bf26616 2785 This variable is used internally by Configure to determine the
781b178c
JH
2786 full pathname (if any) of the sed program. After Configure runs,
2787 the value is reset to a plain "sed" and is not useful.
2788
2789seedfunc (randfunc.U):
2790 Indicates the random number generating seed function.
2791 Values include srand48, srandom, and srand.
2792
2793selectminbits (selectminbits.U):
2794 This variable holds the minimum number of bits operated by select.
2795 That is, if you do select(n, ...), how many bits at least will be
2796 cleared in the masks if some activity is detected. Usually this
2797 is either n or 32*ceil(n/32), especially many little-endians do
2798 the latter. This is only useful if you have select(), naturally.
2799
2800selecttype (selecttype.U):
2801 This variable holds the type used for the 2nd, 3rd, and 4th
2802 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
2803 is defined, and 'int *' otherwise. This is only useful if you
2804 have select(), naturally.
2805
2806sendmail (Loc.U):
ff935051
JH
2807 This variable is defined but not used by Configure.
2808 The value is a plain '' and is not useful.
781b178c
JH
2809
2810sh (sh.U):
2811 This variable contains the full pathname of the shell used
2812 on this system to execute Bourne shell scripts. Usually, this will be
2813 /bin/sh, though it's possible that some systems will have /bin/ksh,
2814 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
2815 D:/bin/sh.exe.
2816 This unit comes before Options.U, so you can't set sh with a '-D'
2817 option, though you can override this (and startsh)
2818 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
2819
2820shar (Loc.U):
2821 This variable is defined but not used by Configure.
2822 The value is a plain '' and is not useful.
2823
2824sharpbang (spitshell.U):
2825 This variable contains the string #! if this system supports that
2826 construct.
2827
2828shmattype (d_shmat.U):
2829 This symbol contains the type of pointer returned by shmat().
2830 It can be 'void *' or 'char *'.
2831
2832shortsize (intsize.U):
2833 This variable contains the value of the SHORTSIZE symbol which
2834 indicates to the C program how many bytes there are in a short.
2835
2836shrpenv (libperl.U):
2837 If the user builds a shared libperl.so, then we need to tell the
2838 'perl' executable where it will be able to find the installed libperl.so.
2839 One way to do this on some systems is to set the environment variable
2840 LD_RUN_PATH to the directory that will be the final location of the
2841 shared libperl.so. The makefile can use this with something like
2842 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
2843 Typical values are
2844 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
2845 or
2846 shrpenv=''
2847 See the main perl Makefile.SH for actual working usage.
2848 Alternatively, we might be able to use a command line option such
2849 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
2850 $archlibexp/CORE (Linux).
2851
2852shsharp (spitshell.U):
2853 This variable tells further Configure units whether your sh can
2854 handle # comments.
2855
2856sig_count (sig_name.U):
2857 This variable holds a number larger than the largest valid
2858 signal number. This is usually the same as the NSIG macro.
2859
2860sig_name (sig_name.U):
2861 This variable holds the signal names, space separated. The leading
2862 SIG in signal name is removed. A ZERO is prepended to the
2863 list. This is currently not used.
2864
2865sig_name_init (sig_name.U):
2866 This variable holds the signal names, enclosed in double quotes and
2867 separated by commas, suitable for use in the SIG_NAME definition
2868 below. A "ZERO" is prepended to the list, and the list is
2869 terminated with a plain 0. The leading SIG in signal names
2870 is removed. See sig_num.
2871
2872sig_num (sig_name.U):
2873 This variable holds the signal numbers, space separated. A ZERO is
2874 prepended to the list (corresponding to the fake SIGZERO), and
2875 the list is terminated with a 0. Those numbers correspond to
2876 the value of the signal listed in the same place within the
2877 sig_name list.
2878
2879sig_num_init (sig_name.U):
2880 This variable holds the signal numbers, enclosed in double quotes and
2881 separated by commas, suitable for use in the SIG_NUM definition
2882 below. A "ZERO" is prepended to the list, and the list is
2883 terminated with a plain 0.
2884
2885signal_t (d_voidsig.U):
2886 This variable holds the type of the signal handler (void or int).
2887
2888sitearch (sitearch.U):
2889 This variable contains the eventual value of the SITEARCH symbol,
2890 which is the name of the private library for this package. It may
2891 have a ~ on the front. It is up to the makefile to eventually create
2892 this directory while performing installation (with ~ substitution).
f868067f
JH
2893 The standard distribution will put nothing in this directory.
2894 After perl has been installed, users may install their own local
2895 architecture-dependent modules in this directory with
2896 MakeMaker Makefile.PL
2897 or equivalent. See INSTALL for details.
781b178c
JH
2898
2899sitearchexp (sitearch.U):
2900 This variable is the ~name expanded version of sitearch, so that you
2901 may use it directly in Makefiles or shell scripts.
2902
0617aed7
JH
2903sitebin (sitebin.U):
2904 This variable holds the name of the directory in which the user wants
2905 to put add-on publicly executable files for the package in question. It
2906 is most often a local directory such as /usr/local/bin. Programs using
2907 this variable must be prepared to deal with ~name substitution.
f868067f
JH
2908 The standard distribution will put nothing in this directory.
2909 After perl has been installed, users may install their own local
2910 executables in this directory with
2911 MakeMaker Makefile.PL
2912 or equivalent. See INSTALL for details.
0617aed7
JH
2913
2914sitebinexp (sitebin.U):
2915 This is the same as the sitebin variable, but is filename expanded at
2916 configuration time, for use in your makefiles.
2917
781b178c
JH
2918sitelib (sitelib.U):
2919 This variable contains the eventual value of the SITELIB symbol,
2920 which is the name of the private library for this package. It may
2921 have a ~ on the front. It is up to the makefile to eventually create
2922 this directory while performing installation (with ~ substitution).
f868067f
JH
2923 The standard distribution will put nothing in this directory.
2924 After perl has been installed, users may install their own local
2925 architecture-independent modules in this directory with
2926 MakeMaker Makefile.PL
2927 or equivalent. See INSTALL for details.
781b178c
JH
2928
2929sitelibexp (sitelib.U):
2930 This variable is the ~name expanded version of sitelib, so that you
2931 may use it directly in Makefiles or shell scripts.
2932
2933siteprefix (siteprefix.U):
2934 This variable holds the full absolute path of the directory below
2935 which the user will install add-on packages.
f868067f 2936 See INSTALL for usage and examples.
781b178c
JH
2937
2938siteprefixexp (siteprefix.U):
2939 This variable holds the full absolute path of the directory below
2940 which the user will install add-on packages. Derived from siteprefix.
2941
2942sizetype (sizetype.U):
2943 This variable defines sizetype to be something like size_t,
2944 unsigned long, or whatever type is used to declare length
2945 parameters for string functions.
2946
2947sleep (Loc.U):
2948 This variable is defined but not used by Configure.
2949 The value is a plain '' and is not useful.
2950
2951smail (Loc.U):
2952 This variable is defined but not used by Configure.
2953 The value is a plain '' and is not useful.
2954
2955small (models.U):
2956 This variable contains a flag which will tell the C compiler and loader
2957 to produce a program running with a small memory model. It is up to
2958 the Makefile to use this.
2959
2960so (so.U):
2961 This variable holds the extension used to identify shared libraries
2962 (also known as shared objects) on the system. Usually set to 'so'.
2963
2964sockethdr (d_socket.U):
2965 This variable has any cpp '-I' flags needed for socket support.
2966
2967socketlib (d_socket.U):
2968 This variable has the names of any libraries needed for socket support.
2969
2970sort (Loc.U):
5bf26616 2971 This variable is used internally by Configure to determine the
781b178c
JH
2972 full pathname (if any) of the sort program. After Configure runs,
2973 the value is reset to a plain "sort" and is not useful.
2974
2975spackage (package.U):
2976 This variable contains the name of the package being constructed,
2977 with the first letter uppercased, i.e. suitable for starting
2978 sentences.
2979
2980spitshell (spitshell.U):
2981 This variable contains the command necessary to spit out a runnable
2982 shell on this system. It is either cat or a grep '-v' for # comments.
2983
2984split (models.U):
2985 This variable contains a flag which will tell the C compiler and loader
2986 to produce a program that will run in separate I and D space, for those
2987 machines that support separation of instruction and data space. It is
2988 up to the Makefile to use this.
2989
ff935051
JH
2990sPRId64 (quadfio.U):
2991 This variable, if defined, contains the string used by stdio to
2992 format 64-bit decimal numbers (format 'd') for output.
2993
2994sPRIeldbl (longdblfio.U):
2995 This variable, if defined, contains the string used by stdio to
2996 format long doubles (format 'e') for output.
2997
2998sPRIEldbl (longdblfio.U):
2999 This variable, if defined, contains the string used by stdio to
3000 format long doubles (format 'E') for output.
3001
3002sPRIfldbl (longdblfio.U):
3003 This variable, if defined, contains the string used by stdio to
3004 format long doubles (format 'f') for output.
3005
3006sPRIFldbl (longdblfio.U):
3007 This variable, if defined, contains the string used by stdio to
3008 format long doubles (format 'F') for output.
3009
3010sPRIgldbl (longdblfio.U):
3011 This variable, if defined, contains the string used by stdio to
3012 format long doubles (format 'g') for output.
3013
3014sPRIGldbl (longdblfio.U):
3015 This variable, if defined, contains the string used by stdio to
3016 format long doubles (format 'G') for output.
3017
3018sPRIi64 (quadfio.U):
3019 This variable, if defined, contains the string used by stdio to
3020 format 64-bit decimal numbers (format 'i') for output.
3021
3022sPRIo64 (quadfio.U):
3023 This variable, if defined, contains the string used by stdio to
3024 format 64-bit octal numbers (format 'o') for output.
3025
3026sPRIu64 (quadfio.U):
3027 This variable, if defined, contains the string used by stdio to
3028 format 64-bit unsigned decimal numbers (format 'u') for output.
3029
3030sPRIx64 (quadfio.U):
3031 This variable, if defined, contains the string used by stdio to
3032 format 64-bit hexadecimal numbers (format 'x') for output.
3033
3034sPRIX64 (quadfio.U):
3035 This variable, if defined, contains the string used by stdio to
3036 format 64-bit hExADECimAl numbers (format 'X') for output.
3037
781b178c
JH
3038src (src.U):
3039 This variable holds the path to the package source. It is up to
3040 the Makefile to use this variable and set VPATH accordingly to
3041 find the sources remotely.
3042
3043ssizetype (ssizetype.U):
3044 This variable defines ssizetype to be something like ssize_t,
3045 long or int. It is used by functions that return a count
3046 of bytes or an error condition. It must be a signed type.
3047 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3048
3049startperl (startperl.U):
3050 This variable contains the string to put on the front of a perl
3051 script to make sure (hopefully) that it runs with perl and not some
3052 shell. Of course, that leading line must be followed by the classical
3053 perl idiom:
3054 eval 'exec perl -S $0 ${1+"$@"}'
3055 if $running_under_some_shell;
3056 to guarantee perl startup should the shell execute the script. Note
3057 that this magic incatation is not understood by csh.
3058
3059startsh (startsh.U):
3060 This variable contains the string to put on the front of a shell
3061 script to make sure (hopefully) that it runs with sh and not some
3062 other shell.
3063
3064static_ext (Extensions.U):
3065 This variable holds a list of XS extension files we want to
3066 link statically into the package. It is used by Makefile.
3067
3068stdchar (stdchar.U):
3069 This variable conditionally defines STDCHAR to be the type of char
3070 used in stdio.h. It has the values "unsigned char" or "char".
3071
3072stdio_base (d_stdstdio.U):
3073 This variable defines how, given a FILE pointer, fp, to access the
3074 _base field (or equivalent) of stdio.h's FILE structure. This will
3075 be used to define the macro FILE_base(fp).
3076
3077stdio_bufsiz (d_stdstdio.U):
3078 This variable defines how, given a FILE pointer, fp, to determine
3079 the number of bytes store in the I/O buffer pointer to by the
3080 _base field (or equivalent) of stdio.h's FILE structure. This will
3081 be used to define the macro FILE_bufsiz(fp).
3082
3083stdio_cnt (d_stdstdio.U):
3084 This variable defines how, given a FILE pointer, fp, to access the
3085 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3086 be used to define the macro FILE_cnt(fp).
3087
3088stdio_filbuf (d_stdstdio.U):
3089 This variable defines how, given a FILE pointer, fp, to tell
3090 stdio to refill it's internal buffers (?). This will
3091 be used to define the macro FILE_filbuf(fp).
3092
3093stdio_ptr (d_stdstdio.U):
3094 This variable defines how, given a FILE pointer, fp, to access the
3095 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3096 be used to define the macro FILE_ptr(fp).
3097
3098stdio_stream_array (stdio_streams.U):
3099 This variable tells the name of the array holding the stdio streams.
3100 Usual values include _iob, __iob, and __sF.
3101
3102strings (i_string.U):
3103 This variable holds the full path of the string header that will be
3104 used. Typically /usr/include/string.h or /usr/include/strings.h.
3105
3106submit (Loc.U):
3107 This variable is defined but not used by Configure.
3108 The value is a plain '' and is not useful.
3109
3110subversion (patchlevel.U):
3111 The subversion level of this package.
3112 The value of subversion comes from the patchlevel.h file.
ff935051 3113 In a version number such as 5.6.1, this is the "1".
781b178c
JH
3114 This is unique to perl.
3115
3116sysman (sysman.U):
3117 This variable holds the place where the manual is located on this
3118 system. It is not the place where the user wants to put his manual
3119 pages. Rather it is the place where Configure may look to find manual
3120 for unix commands (section 1 of the manual usually). See mansrc.
3121
3122tail (Loc.U):
3123 This variable is defined but not used by Configure.
3124 The value is a plain '' and is not useful.
3125
3126tar (Loc.U):
3127 This variable is defined but not used by Configure.
3128 The value is a plain '' and is not useful.
3129
3130tbl (Loc.U):
3131 This variable is defined but not used by Configure.
3132 The value is a plain '' and is not useful.
3133
3134tee (Loc.U):
3135 This variable is defined but not used by Configure.
3136 The value is a plain '' and is not useful.
3137
3138test (Loc.U):
5bf26616 3139 This variable is used internally by Configure to determine the
781b178c
JH
3140 full pathname (if any) of the test program. After Configure runs,
3141 the value is reset to a plain "test" and is not useful.
3142
3143timeincl (i_time.U):
3144 This variable holds the full path of the included time header(s).
3145
3146timetype (d_time.U):
3147 This variable holds the type returned by time(). It can be long,
3148 or time_t on BSD sites (in which case <sys/types.h> should be
3149 included). Anyway, the type Time_t should be used.
3150
3151touch (Loc.U):
5bf26616 3152 This variable is used internally by Configure to determine the
781b178c
JH
3153 full pathname (if any) of the touch program. After Configure runs,
3154 the value is reset to a plain "touch" and is not useful.
3155
3156tr (Loc.U):
5bf26616 3157 This variable is used internally by Configure to determine the
781b178c
JH
3158 full pathname (if any) of the tr program. After Configure runs,
3159 the value is reset to a plain "tr" and is not useful.
3160
3161trnl (trnl.U):
3162 This variable contains the value to be passed to the tr(1)
3163 command to transliterate a newline. Typical values are
3164 '\012' and '\n'. This is needed for EBCDIC systems where
3165 newline is not necessarily '\012'.
3166
3167troff (Loc.U):
3168 This variable is defined but not used by Configure.
3169 The value is a plain '' and is not useful.
3170
a22e52b9
JH
3171u16size (perlxv.U):
3172 This variable is the size of an U16 in bytes.
3173
3174u16type (perlxv.U):
3175 This variable contains the C type used for Perl's U16.
3176
3177u32size (perlxv.U):
3178 This variable is the size of an U32 in bytes.
3179
3180u32type (perlxv.U):
3181 This variable contains the C type used for Perl's U32.
3182
3183u64size (perlxv.U):
3184 This variable is the size of an U64 in bytes.
3185
3186u64type (perlxv.U):
3187 This variable contains the C type used for Perl's U64.
3188
3189u8size (perlxv.U):
3190 This variable is the size of an U8 in bytes.
3191
3192u8type (perlxv.U):
3193 This variable contains the C type used for Perl's U8.
3194
3195uidformat (uidf.U):
3196 This variable contains the format string used for printing a Uid_t.
3197
2d228ff3
JH
3198uidsign (uidsign.U):
3199 This variable contains the signedness of a uidtype.
3200 1 for unsigned, -1 for signed.
3201
785fb66b
JH
3202uidsize (uidsize.U):
3203 This variable contains the size of a uidtype in bytes.
3204
781b178c
JH
3205uidtype (uidtype.U):
3206 This variable defines Uid_t to be something like uid_t, int,
3207 ushort, or whatever type is used to declare user ids in the kernel.
3208
3209uname (Loc.U):
5bf26616 3210 This variable is used internally by Configure to determine the
781b178c
JH
3211 full pathname (if any) of the uname program. After Configure runs,
3212 the value is reset to a plain "uname" and is not useful.
3213
3214uniq (Loc.U):
5bf26616 3215 This variable is used internally by Configure to determine the
781b178c
JH
3216 full pathname (if any) of the uniq program. After Configure runs,
3217 the value is reset to a plain "uniq" and is not useful.
3218
0befd8de
JH
3219uquadtype (quadtype.U):
3220 This variable defines Uquad_t to be something like unsigned long,
3221 unsigned int, unsigned long long, uint64_t, or whatever type is
3222 used for 64-bit integers.
3223
aaacdc8b
GS
3224use5005threads (usethreads.U):
3225 This variable conditionally defines the USE_5005THREADS symbol,
3226 and indicates that Perl should be built to use the 5.005-based
3227 threading implementation.
3228
781b178c
JH
3229use64bits (use64bits.U):
3230 This variable conditionally defines the USE_64_BITS symbol,
aaacdc8b 3231 and indicates that 64-bit integer types should be used
781b178c
JH
3232 when available.
3233
3234usedl (dlsrc.U):
ff935051 3235 This variable indicates if the system supports dynamic
781b178c
JH
3236 loading of some sort. See also dlsrc and dlobj.
3237
aaacdc8b
GS
3238useithreads (usethreads.U):
3239 This variable conditionally defines the USE_ITHREADS symbol,
3240 and indicates that Perl should be built to use the interpreter-based
3241 threading implementation.
3242
5bf26616 3243uselargefiles (uselfs.U):
1baac590
JH
3244 This variable conditionally defines the USE_LARGE_FILES symbol,
3245 and indicates that large file interfaces should be used when
3246 available. The use64bits symbol will also be turned on if necessary.
3247
ca24dfc6
LV
3248uselongdouble (uselongdbl.U):
3249 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3250 and indicates that long doubles should be used when available.
3251
0befd8de
JH
3252uselonglong (uselonglong.U):
3253 This variable conditionally defines the USE_LONG_LONG symbol,
3254 and indicates that long longs should be used when available.
3255
1baac590
JH
3256usemorebits (usemorebits.U):
3257 This variable conditionally defines the USE_MORE_BITS symbol,
3258 and indicates that explicit 64-bit interfaces and long doubles
3259 should be used when available.
3260
781b178c
JH
3261usemultiplicity (usemultiplicity.U):
3262 This variable conditionally defines the MULTIPLICITY symbol,
3263 and indicates that Perl should be built to use multiplicity.
3264
3265usemymalloc (mallocsrc.U):
3266 This variable contains y if the malloc that comes with this package
3267 is desired over the system's version of malloc. People often include
3268 special versions of malloc for effiency, but such versions are often
3269 less portable. See also mallocsrc and mallocobj.
3270 If this is 'y', then -lmalloc is removed from $libs.
3271
3272usenm (usenm.U):
3273 This variable contains 'true' or 'false' depending whether the
3274 nm extraction is wanted or not.
3275
3276useopcode (Extensions.U):
3277 This variable holds either 'true' or 'false' to indicate
3278 whether the Opcode extension should be used. The sole
3279 use for this currently is to allow an easy mechanism
3280 for users to skip the Opcode extension from the Configure
3281 command line.
3282
3283useperlio (useperlio.U):
3284 This variable conditionally defines the USE_PERLIO symbol,
3285 and indicates that the PerlIO abstraction should be
3286 used throughout.
3287
3288useposix (Extensions.U):
3289 This variable holds either 'true' or 'false' to indicate
3290 whether the POSIX extension should be used. The sole
3291 use for this currently is to allow an easy mechanism
3292 for hints files to indicate that POSIX will not compile
3293 on a particular system.
3294
3295usesfio (d_sfio.U):
3296 This variable is set to true when the user agrees to use sfio.
3297 It is set to false when sfio is not available or when the user
3298 explicitely requests not to use sfio. It is here primarily so
3299 that command-line settings can override the auto-detection of
3300 d_sfio without running into a "WHOA THERE".
3301
3302useshrplib (libperl.U):
3303 This variable is set to 'yes' if the user wishes
3304 to build a shared libperl, and 'no' otherwise.
3305
3306usesocks (usesocks.U):
3307 This variable conditionally defines the USE_SOCKS symbol,
3308 and indicates that Perl should be built to use SOCKS.
3309
3310usethreads (usethreads.U):
3311 This variable conditionally defines the USE_THREADS symbol,
3312 and indicates that Perl should be built to use threads.
3313
9f50e519
NA
3314usevendorprefix (vendorprefix.U):
3315 This variable tells whether the vendorprefix
3316 and consequently other vendor* paths are in use.
3317
781b178c
JH
3318usevfork (d_vfork.U):
3319 This variable is set to true when the user accepts to use vfork.
3320 It is set to false when no vfork is available or when the user
3321 explicitely requests not to use vfork.
3322
3323usrinc (usrinc.U):
3324 This variable holds the path of the include files, which is
3325 usually /usr/include. It is mainly used by other Configure units.
3326
3327uuname (Loc.U):
3328 This variable is defined but not used by Configure.
3329 The value is a plain '' and is not useful.
3330
a22e52b9
JH
3331uvoformat (perlxvf.U):
3332 This variable contains the format string used for printing
3333 a Perl UV as an unsigned octal integer.
3334
3335uvsize (perlxv.U):
3336 This variable is the size of a UV in bytes.
3337
3338uvtype (perlxv.U):
3339 This variable contains the C type used for Perl's UV.
3340
3341uvuformat (perlxvf.U):
3342 This variable contains the format string used for printing
3343 a Perl UV as an unsigned decimal integer.
3344
3345uvxformat (perlxvf.U):
3346 This variable contains the format string used for printing
3347 a Perl UV as an unsigned hexadecimal integer.
3348
0617aed7 3349vendorbin (vendorbin.U):
f868067f
JH
3350 This variable contains the eventual value of the VENDORBIN symbol.
3351 It may have a ~ on the front.
3352 The standard distribution will put nothing in this directory.
3353 Vendors who distribute perl may wish to place additional
3354 binaries in this directory with
3355 MakeMaker Makefile.PL INSTALLDIRS=vendor
3356 or equivalent. See INSTALL for details.
0617aed7
JH
3357
3358vendorbinexp (vendorbin.U):
3359 This variable is the ~name expanded version of vendorbin, so that you
3360 may use it directly in Makefiles or shell scripts.
3361
a3635516
JH
3362vendorlib (vendorlib.U):
3363 This variable contains the eventual value of the VENDORLIB symbol,
f868067f
JH
3364 which is the name of the private library for this package.
3365 The standard distribution will put nothing in this directory.
3366 Vendors who distribute perl may wish to place their own
3367 modules in this directory with
3368 MakeMaker Makefile.PL INSTALLDIRS=vendor
3369 or equivalent. See INSTALL for details.
a3635516
JH
3370
3371vendorlibexp (vendorlib.U):
3372 This variable is the ~name expanded version of vendorlib, so that you
3373 may use it directly in Makefiles or shell scripts.
3374
3375vendorprefix (vendorprefix.U):
3376 This variable holds the full absolute path of the directory below
3377 which the vendor will install add-on packages.
f868067f 3378 See INSTALL for usage and examples.
a3635516
JH
3379
3380vendorprefixexp (vendorprefix.U):
3381 This variable holds the full absolute path of the directory below
3382 which the vendor will install add-on packages. Derived from vendorprefix.
3383
781b178c 3384version (patchlevel.U):
ff935051
JH
3385 The full version number of this package, such as 5.6.1 (or 5_6_1).
3386 This combines baserev, patchlevel, and subversion to get the
3387 full version number, including any possible subversions.
3388 This is suitable for use as a directory name, and hence is
3389 filesystem dependent.
781b178c
JH
3390
3391vi (Loc.U):
3392 This variable is defined but not used by Configure.
3393 The value is a plain '' and is not useful.
3394
3395voidflags (voidflags.U):
3396 This variable contains the eventual value of the VOIDFLAGS symbol,
3397 which indicates how much support of the void type is given by this
3398 compiler. See VOIDFLAGS for more info.
3399
3400xlibpth (libpth.U):
3401 This variable holds extra path (space-separated) used to find
3402 libraries on this platform, for example CPU-specific libraries
3403 (on multi-CPU platforms) may be listed here.
3404
3405zcat (Loc.U):
3406 This variable is defined but not used by Configure.
3407 The value is a plain '' and is not useful.
3408
3409zip (Loc.U):
5bf26616 3410 This variable is used internally by Configure to determine the
781b178c
JH
3411 full pathname (if any) of the zip program. After Configure runs,
3412 the value is reset to a plain "zip" and is not useful.
3413