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Document UNTIE. Also tweak implementation to suppress the 'inner references'
[perl5.git] / Porting / Glossary
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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
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29 double-- or a long double when applicable. Usual values are
30 2, 4 and 8. The default is eight, for safety.
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31
32ansi2knr (ansi2knr.U):
33 This variable is set if the user needs to run ansi2knr.
34 Currently, this is not supported, so we just abort.
35
36aphostname (d_gethname.U):
37 This variable contains the command which can be used to compute the
38 host name. The command is fully qualified by its absolute path, to make
39 it safe when used by a process with super-user privileges.
40
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41api_revision (patchlevel.U):
42 The three variables, api_revision, api_version, and
43 api_subversion, specify the version of the oldest perl binary
44 compatible with the present perl. In a full version string
45 such as '5.6.1', api_revision is the '5'.
46 Prior to 5.5.640, the format was a floating point number,
47 like 5.00563.
48 perl.c:incpush() and lib/lib.pm will automatically search in
49 $sitelib/.. for older directories back to the limit specified
50 by these api_ variables. This is only useful if you have a
51 perl library directory tree structured like the default one.
52 See INSTALL for how this works. The versioned site_perl
53 directory was introduced in 5.005, so that is the lowest
54 possible value. The version list appropriate for the current
55 system is determined in inc_version_list.U.
56 XXX To do: Since compatibility can depend on compile time
57 options (such as bincompat, longlong, etc.) it should
58 (perhaps) be set by Configure, but currently it isn't.
59 Currently, we read a hard-wired value from patchlevel.h.
60 Perhaps what we ought to do is take the hard-wired value from
61 patchlevel.h but then modify it if the current Configure
62 options warrant. patchlevel.h then would use an #ifdef guard.
63
64api_subversion (patchlevel.U):
65 The three variables, api_revision, api_version, and
66 api_subversion, specify the version of the oldest perl binary
67 compatible with the present perl. In a full version string
68 such as '5.6.1', api_subversion is the '1'. See api_revision for
69 full details.
70
71api_version (patchlevel.U):
72 The three variables, api_revision, api_version, and
73 api_subversion, specify the version of the oldest perl binary
74 compatible with the present perl. In a full version string
75 such as '5.6.1', api_version is the '6'. See api_revision for
76 full details. As a special case, 5.5.0 is rendered in the
77 old-style as 5.005. (In the 5.005_0x maintenance series,
78 this was the only versioned directory in $sitelib.)
79
80api_versionstring (patchlevel.U):
81 This variable combines api_revision, api_version, and
82 api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
83 for use as a directory name. This is filesystem dependent.
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84
85ar (Loc.U):
5bf26616 86 This variable is used internally by Configure to determine the
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87 full pathname (if any) of the ar program. After Configure runs,
88 the value is reset to a plain "ar" and is not useful.
89
90archlib (archlib.U):
91 This variable holds the name of the directory in which the user wants
92 to put architecture-dependent public library files for $package.
93 It is most often a local directory such as /usr/local/lib.
94 Programs using this variable must be prepared to deal
95 with filename expansion.
96
97archlibexp (archlib.U):
98 This variable is the same as the archlib variable, but is
99 filename expanded at configuration time, for convenient use.
100
101archname64 (use64bits.U):
102 This variable is used for the 64-bitness part of $archname.
103
104archname (archname.U):
105 This variable is a short name to characterize the current
106 architecture. It is used mainly to construct the default archlib.
107
108archobjs (Unix.U):
109 This variable defines any additional objects that must be linked
110 in with the program on this architecture. On unix, it is usually
111 empty. It is typically used to include emulations of unix calls
112 or other facilities. For perl on OS/2, for example, this would
113 include os2/os2.obj.
114
115awk (Loc.U):
5bf26616 116 This variable is used internally by Configure to determine the
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117 full pathname (if any) of the awk program. After Configure runs,
118 the value is reset to a plain "awk" and is not useful.
119
120baserev (baserev.U):
121 The base revision level of this package, from the .package file.
122
123bash (Loc.U):
124 This variable is defined but not used by Configure.
125 The value is a plain '' and is not useful.
126
127bin (bin.U):
128 This variable holds the name of the directory in which the user wants
129 to put publicly executable images for the package in question. It
130 is most often a local directory such as /usr/local/bin. Programs using
131 this variable must be prepared to deal with ~name substitution.
132
d71b2b6b 133bincompat5005 (bincompat5005.U):
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134 This variable contains y if this version of Perl should be
135 binary-compatible with Perl 5.005.
d71b2b6b 136
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137binexp (bin.U):
138 This is the same as the bin variable, but is filename expanded at
139 configuration time, for use in your makefiles.
140
141bison (Loc.U):
142 This variable is defined but not used by Configure.
143 The value is a plain '' and is not useful.
144
145byacc (Loc.U):
5bf26616 146 This variable is used internally by Configure to determine the
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147 full pathname (if any) of the byacc program. After Configure runs,
148 the value is reset to a plain "byacc" and is not useful.
149
150byteorder (byteorder.U):
151 This variable holds the byte order. In the following, larger digits
152 indicate more significance. The variable byteorder is either 4321
153 on a big-endian machine, or 1234 on a little-endian, or 87654321
154 on a Cray ... or 3412 with weird order !
155
156c (n.U):
157 This variable contains the \c string if that is what causes the echo
158 command to suppress newline. Otherwise it is null. Correct usage is
159 $echo $n "prompt for a question: $c".
160
161castflags (d_castneg.U):
162 This variable contains a flag that precise difficulties the
163 compiler has casting odd floating values to unsigned long:
164 0 = ok
165 1 = couldn't cast < 0
166 2 = couldn't cast >= 0x80000000
167 4 = couldn't cast in argument expression list
168
169cat (Loc.U):
5bf26616 170 This variable is used internally by Configure to determine the
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171 full pathname (if any) of the cat program. After Configure runs,
172 the value is reset to a plain "cat" and is not useful.
173
174cc (cc.U):
175 This variable holds the name of a command to execute a C compiler which
176 can resolve multiple global references that happen to have the same
177 name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'.
af960fef 178 Fervent ANSI compilers may be called 'c89'. AIX has xlc.
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179
180cccdlflags (dlsrc.U):
181 This variable contains any special flags that might need to be
182 passed with 'cc -c' to compile modules to be used to create a shared
183 library that will be used for dynamic loading. For hpux, this
184 should be +z. It is up to the makefile to use it.
185
186ccdlflags (dlsrc.U):
187 This variable contains any special flags that might need to be
188 passed to cc to link with a shared library for dynamic loading.
189 It is up to the makefile to use it. For sunos 4.1, it should
190 be empty.
191
192ccflags (ccflags.U):
193 This variable contains any additional C compiler flags desired by
194 the user. It is up to the Makefile to use this.
195
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196ccflags_uselargefiles (uselfs.U):
197 This variable contains the compiler flags needed by large file builds
198 and added to ccflags by hints files.
199
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200ccsymbols (Cppsym.U):
201 The variable contains the symbols defined by the C compiler alone.
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202 The symbols defined by cpp or by cc when it calls cpp are not in
203 this list, see cppsymbols and cppccsymbols.
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204 The list is a space-separated list of symbol=value tokens.
205
206cf_by (cf_who.U):
207 Login name of the person who ran the Configure script and answered the
208 questions. This is used to tag both config.sh and config_h.SH.
209
210cf_email (cf_email.U):
211 Electronic mail address of the person who ran Configure. This can be
212 used by units that require the user's e-mail, like MailList.U.
213
214cf_time (cf_who.U):
215 Holds the output of the "date" command when the configuration file was
216 produced. This is used to tag both config.sh and config_h.SH.
217
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218charsize (charsize.U):
219 This variable contains the value of the CHARSIZE symbol, which
220 indicates to the C program how many bytes there are in a character.
221
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222chgrp (Loc.U):
223 This variable is defined but not used by Configure.
224 The value is a plain '' and is not useful.
225
226chmod (Loc.U):
227 This variable is defined but not used by Configure.
228 The value is a plain '' and is not useful.
229
230chown (Loc.U):
231 This variable is defined but not used by Configure.
232 The value is a plain '' and is not useful.
233
234clocktype (d_times.U):
235 This variable holds the type returned by times(). It can be long,
236 or clock_t on BSD sites (in which case <sys/types.h> should be
237 included).
238
239comm (Loc.U):
5bf26616 240 This variable is used internally by Configure to determine the
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241 full pathname (if any) of the comm program. After Configure runs,
242 the value is reset to a plain "comm" and is not useful.
243
244compress (Loc.U):
245 This variable is defined but not used by Configure.
246 The value is a plain '' and is not useful.
247
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248CONFIGDOTSH (Oldsyms.U):
249 This is set to 'true' in config.sh so that a shell script
250 sourcing config.sh can tell if it has been sourced already.
251
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252contains (contains.U):
253 This variable holds the command to do a grep with a proper return
254 status. On most sane systems it is simply "grep". On insane systems
255 it is a grep followed by a cat followed by a test. This variable
256 is primarily for the use of other Configure units.
257
258cp (Loc.U):
5bf26616 259 This variable is used internally by Configure to determine the
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260 full pathname (if any) of the cp program. After Configure runs,
261 the value is reset to a plain "cp" and is not useful.
262
263cpio (Loc.U):
264 This variable is defined but not used by Configure.
265 The value is a plain '' and is not useful.
266
267cpp (Loc.U):
5bf26616 268 This variable is used internally by Configure to determine the
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269 full pathname (if any) of the cpp program. After Configure runs,
270 the value is reset to a plain "cpp" and is not useful.
271
272cpp_stuff (cpp_stuff.U):
273 This variable contains an identification of the catenation mechanism
274 used by the C preprocessor.
275
276cppccsymbols (Cppsym.U):
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277 The variable contains the symbols defined by the C compiler
278 when it calls cpp. The symbols defined by the cc alone or cpp
279 alone are not in this list, see ccsymbols and cppsymbols.
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280 The list is a space-separated list of symbol=value tokens.
281
282cppflags (ccflags.U):
283 This variable holds the flags that will be passed to the C pre-
284 processor. It is up to the Makefile to use it.
285
286cpplast (cppstdin.U):
287 This variable has the same functionality as cppminus, only it applies
288 to cpprun and not cppstdin.
289
290cppminus (cppstdin.U):
291 This variable contains the second part of the string which will invoke
292 the C preprocessor on the standard input and produce to standard
293 output. This variable will have the value "-" if cppstdin needs
294 a minus to specify standard input, otherwise the value is "".
295
296cpprun (cppstdin.U):
297 This variable contains the command which will invoke a C preprocessor
298 on standard input and put the output to stdout. It is guaranteed not
299 to be a wrapper and may be a null string if no preprocessor can be
300 made directly available. This preprocessor might be different from the
301 one used by the C compiler. Don't forget to append cpplast after the
302 preprocessor options.
303
304cppstdin (cppstdin.U):
305 This variable contains the command which will invoke the C
306 preprocessor on standard input and put the output to stdout.
307 It is primarily used by other Configure units that ask about
308 preprocessor symbols.
309
310cppsymbols (Cppsym.U):
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311 The variable contains the symbols defined by the C preprocessor
312 alone. The symbols defined by cc or by cc when it calls cpp are
313 not in this list, see ccsymbols and cppccsymbols.
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314 The list is a space-separated list of symbol=value tokens.
315
316crosscompile (crosscompile.U):
317 This variable conditionally defines the CROSSCOMPILE symbol
318 which signifies that the build process is be a cross-compilation.
319 This is normally set by hints files or from Configure command line.
320
321cryptlib (d_crypt.U):
322 This variable holds -lcrypt or the path to a libcrypt.a archive if
323 the crypt() function is not defined in the standard C library. It is
324 up to the Makefile to use this.
325
326csh (Loc.U):
5bf26616 327 This variable is used internally by Configure to determine the
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328 full pathname (if any) of the csh program. After Configure runs,
329 the value is reset to a plain "csh" and is not useful.
330
331d_access (d_access.U):
332 This variable conditionally defines HAS_ACCESS if the access() system
333 call is available to check for access permissions using real IDs.
334
335d_accessx (d_accessx.U):
336 This variable conditionally defines the HAS_ACCESSX symbol, which
337 indicates to the C program that the accessx() routine is available.
338
339d_alarm (d_alarm.U):
340 This variable conditionally defines the HAS_ALARM symbol, which
341 indicates to the C program that the alarm() routine is available.
342
343d_archlib (archlib.U):
344 This variable conditionally defines ARCHLIB to hold the pathname
345 of architecture-dependent library files for $package. If
346 $archlib is the same as $privlib, then this is set to undef.
347
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348d_atolf (atolf.U):
349 This variable conditionally defines the HAS_ATOLF symbol, which
350 indicates to the C program that the atolf() routine is available.
351
352d_atoll (atoll.U):
353 This variable conditionally defines the HAS_ATOLL symbol, which
354 indicates to the C program that the atoll() routine is available.
355
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356d_attribut (d_attribut.U):
357 This variable conditionally defines HASATTRIBUTE, which
358 indicates the C compiler can check for function attributes,
359 such as printf formats.
360
361d_bcmp (d_bcmp.U):
362 This variable conditionally defines the HAS_BCMP symbol if
363 the bcmp() routine is available to compare strings.
364
365d_bcopy (d_bcopy.U):
366 This variable conditionally defines the HAS_BCOPY symbol if
367 the bcopy() routine is available to copy strings.
368
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369d_bincompat5005 (bincompat5005.U):
370 This variable conditionally defines BINCOMPAT5005 so that embed.h
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371 can take special action if this version of Perl should be
372 binary-compatible with Perl 5.005. This is impossible for builds
373 that use features like threads and multiplicity it is always $undef
374 for those versions.
d71b2b6b 375
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376d_bsd (Guess.U):
377 This symbol conditionally defines the symbol BSD when running on a
378 BSD system.
379
380d_bsdgetpgrp (d_getpgrp.U):
381 This variable conditionally defines USE_BSD_GETPGRP if
382 getpgrp needs one arguments whereas USG one needs none.
383
384d_bsdsetpgrp (d_setpgrp.U):
385 This variable conditionally defines USE_BSD_SETPGRP if
386 setpgrp needs two arguments whereas USG one needs none.
387 See also d_setpgid for a POSIX interface.
388
389d_bzero (d_bzero.U):
390 This variable conditionally defines the HAS_BZERO symbol if
391 the bzero() routine is available to set memory to 0.
392
393d_casti32 (d_casti32.U):
394 This variable conditionally defines CASTI32, which indicates
395 whether the C compiler can cast large floats to 32-bit ints.
396
397d_castneg (d_castneg.U):
398 This variable conditionally defines CASTNEG, which indicates
399 wether the C compiler can cast negative float to unsigned.
400
401d_charvspr (d_vprintf.U):
402 This variable conditionally defines CHARVSPRINTF if this system
403 has vsprintf returning type (char*). The trend seems to be to
404 declare it as "int vsprintf()".
405
406d_chown (d_chown.U):
407 This variable conditionally defines the HAS_CHOWN symbol, which
408 indicates to the C program that the chown() routine is available.
409
410d_chroot (d_chroot.U):
411 This variable conditionally defines the HAS_CHROOT symbol, which
412 indicates to the C program that the chroot() routine is available.
413
414d_chsize (d_chsize.U):
415 This variable conditionally defines the CHSIZE symbol, which
416 indicates to the C program that the chsize() routine is available
417 to truncate files. You might need a -lx to get this routine.
418
419d_closedir (d_closedir.U):
420 This variable conditionally defines HAS_CLOSEDIR if closedir() is
421 available.
422
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423d_const (d_const.U):
424 This variable conditionally defines the HASCONST symbol, which
425 indicates to the C program that this C compiler knows about the
426 const type.
427
428d_crypt (d_crypt.U):
429 This variable conditionally defines the CRYPT symbol, which
430 indicates to the C program that the crypt() routine is available
431 to encrypt passwords and the like.
432
433d_csh (d_csh.U):
434 This variable conditionally defines the CSH symbol, which
435 indicates to the C program that the C-shell exists.
436
437d_cuserid (d_cuserid.U):
438 This variable conditionally defines the HAS_CUSERID symbol, which
439 indicates to the C program that the cuserid() routine is available
440 to get character login names.
441
442d_dbl_dig (d_dbl_dig.U):
443 This variable conditionally defines d_dbl_dig if this system's
444 header files provide DBL_DIG, which is the number of significant
445 digits in a double precision number.
446
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447d_difftime (d_difftime.U):
448 This variable conditionally defines the HAS_DIFFTIME symbol, which
449 indicates to the C program that the difftime() routine is available.
450
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451d_dirnamlen (i_dirent.U):
452 This variable conditionally defines DIRNAMLEN, which indicates
453 to the C program that the length of directory entry names is
454 provided by a d_namelen field.
455
456d_dlerror (d_dlerror.U):
457 This variable conditionally defines the HAS_DLERROR symbol, which
458 indicates to the C program that the dlerror() routine is available.
459
460d_dlopen (d_dlopen.U):
461 This variable conditionally defines the HAS_DLOPEN symbol, which
462 indicates to the C program that the dlopen() routine is available.
463
464d_dlsymun (d_dlsymun.U):
465 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
466 indicates that we need to prepend an underscore to the symbol
467 name before calling dlsym().
468
469d_dosuid (d_dosuid.U):
470 This variable conditionally defines the symbol DOSUID, which
471 tells the C program that it should insert setuid emulation code
472 on hosts which have setuid #! scripts disabled.
473
474d_drand48proto (d_drand48proto.U):
475 This variable conditionally defines the HAS_DRAND48_PROTO symbol,
476 which indicates to the C program that the system provides
477 a prototype for the drand48() function. Otherwise, it is
478 up to the program to supply one.
479
480d_dup2 (d_dup2.U):
481 This variable conditionally defines HAS_DUP2 if dup2() is
482 available to duplicate file descriptors.
483
484d_eaccess (d_eaccess.U):
485 This variable conditionally defines the HAS_EACCESS symbol, which
486 indicates to the C program that the eaccess() routine is available.
487
488d_endgrent (d_endgrent.U):
489 This variable conditionally defines the HAS_ENDGRENT symbol, which
490 indicates to the C program that the endgrent() routine is available
491 for sequential access of the group database.
492
493d_endhent (d_endhent.U):
494 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
495 available to close whatever was being used for host queries.
496
497d_endnent (d_endnent.U):
498 This variable conditionally defines HAS_ENDNETENT if endnetent() is
499 available to close whatever was being used for network queries.
500
501d_endpent (d_endpent.U):
502 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
503 available to close whatever was being used for protocol queries.
504
505d_endpwent (d_endpwent.U):
506 This variable conditionally defines the HAS_ENDPWENT symbol, which
507 indicates to the C program that the endpwent() routine is available
508 for sequential access of the passwd database.
509
510d_endsent (d_endsent.U):
511 This variable conditionally defines HAS_ENDSERVENT if endservent() is
512 available to close whatever was being used for service queries.
513
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514d_eofnblk (nblock_io.U):
515 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
516 when reading from a non-blocking I/O source.
517
518d_eunice (Guess.U):
519 This variable conditionally defines the symbols EUNICE and VAX, which
520 alerts the C program that it must deal with ideosyncracies of VMS.
521
522d_fchmod (d_fchmod.U):
523 This variable conditionally defines the HAS_FCHMOD symbol, which
524 indicates to the C program that the fchmod() routine is available
525 to change mode of opened files.
526
527d_fchown (d_fchown.U):
528 This variable conditionally defines the HAS_FCHOWN symbol, which
529 indicates to the C program that the fchown() routine is available
530 to change ownership of opened files.
531
532d_fcntl (d_fcntl.U):
533 This variable conditionally defines the HAS_FCNTL symbol, and indicates
534 whether the fcntl() function exists
535
536d_fd_macros (d_fd_set.U):
537 This variable contains the eventual value of the HAS_FD_MACROS symbol,
538 which indicates if your C compiler knows about the macros which
539 manipulate an fd_set.
540
541d_fd_set (d_fd_set.U):
542 This variable contains the eventual value of the HAS_FD_SET symbol,
543 which indicates if your C compiler knows about the fd_set typedef.
544
545d_fds_bits (d_fd_set.U):
546 This variable contains the eventual value of the HAS_FDS_BITS symbol,
547 which indicates if your fd_set typedef contains the fds_bits member.
548 If you have an fd_set typedef, but the dweebs who installed it did
549 a half-fast job and neglected to provide the macros to manipulate
550 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
551
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552d_fgetpos (d_fgetpos.U):
553 This variable conditionally defines HAS_FGETPOS if fgetpos() is
554 available to get the file position indicator.
555
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556d_flexfnam (d_flexfnam.U):
557 This variable conditionally defines the FLEXFILENAMES symbol, which
558 indicates that the system supports filenames longer than 14 characters.
559
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560d_flock (d_flock.U):
561 This variable conditionally defines HAS_FLOCK if flock() is
562 available to do file locking.
563
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564d_fork (d_fork.U):
565 This variable conditionally defines the HAS_FORK symbol, which
566 indicates to the C program that the fork() routine is available.
567
568d_fpathconf (d_pathconf.U):
569 This variable conditionally defines the HAS_FPATHCONF symbol, which
570 indicates to the C program that the pathconf() routine is available
571 to determine file-system related limits and options associated
572 with a given open file descriptor.
573
c890dc6c 574d_fpos64_t (d_fpos64_t.U):
ca24dfc6 575 This symbol will be defined if the C compiler supports fpos64_t.
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577d_frexpl (d_frexpl.U):
578 This variable conditionally defines the HAS_FREXPL symbol, which
579 indicates to the C program that the frexpl() routine is available.
580
ad27e871 581d_fs_data_s (d_fs_data_s.U):
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582 This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
583 which indicates that the struct fs_data is supported.
584
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585d_fseeko (d_fseeko.U):
586 This variable conditionally defines the HAS_FSEEKO symbol, which
587 indicates to the C program that the fseeko() routine is available.
588
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589d_fsetpos (d_fsetpos.U):
590 This variable conditionally defines HAS_FSETPOS if fsetpos() is
591 available to set the file position indicator.
592
0545a864 593d_fstatfs (d_fstatfs.U):
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594 This variable conditionally defines the HAS_FSTATFS symbol, which
595 indicates to the C program that the fstatfs() routine is available.
596
597d_fstatvfs (d_statvfs.U):
598 This variable conditionally defines the HAS_FSTATVFS symbol, which
599 indicates to the C program that the fstatvfs() routine is available.
600
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601d_ftello (d_ftello.U):
602 This variable conditionally defines the HAS_FTELLO symbol, which
603 indicates to the C program that the ftello() routine is available.
604
605d_ftime (d_ftime.U):
606 This variable conditionally defines the HAS_FTIME symbol, which indicates
607 that the ftime() routine exists. The ftime() routine is basically
608 a sub-second accuracy clock.
609
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610d_Gconvert (d_gconvert.U):
611 This variable holds what Gconvert is defined as to convert
612 floating point numbers into strings. It could be 'gconvert'
613 or a more complex macro emulating gconvert with gcvt() or sprintf.
614 Possible values are:
615 d_Gconvert='gconvert((x),(n),(t),(b))'
616 d_Gconvert='gcvt((x),(n),(b))'
617 d_Gconvert='sprintf((b),"%.*g",(n),(x))'
618
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619d_getcwd (d_getcwd.U):
620 This variable conditionally defines the HAS_GETCWD symbol, which
621 indicates to the C program that the getcwd() routine is available
622 to get the current working directory.
623
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624d_getespwnam (d_getespwnam.U):
625 This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
626 available to retrieve enchanced (shadow) password entries by name.
627
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628d_getfsstat (d_getfsstat.U):
629 This variable conditionally defines the HAS_GETFSSTAT symbol, which
630 indicates to the C program that the getfsstat() routine is available.
631
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632d_getgrent (d_getgrent.U):
633 This variable conditionally defines the HAS_GETGRENT symbol, which
634 indicates to the C program that the getgrent() routine is available
635 for sequential access of the group database.
636
637d_getgrps (d_getgrps.U):
638 This variable conditionally defines the HAS_GETGROUPS symbol, which
639 indicates to the C program that the getgroups() routine is available
640 to get the list of process groups.
641
642d_gethbyaddr (d_gethbyad.U):
643 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
644 indicates to the C program that the gethostbyaddr() routine is available
645 to look up hosts by their IP addresses.
646
647d_gethbyname (d_gethbynm.U):
648 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
649 indicates to the C program that the gethostbyname() routine is available
650 to look up host names in some data base or other.
651
652d_gethent (d_gethent.U):
653 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
654 available to look up host names in some data base or another.
655
656d_gethname (d_gethname.U):
657 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
658 indicates to the C program that the gethostname() routine may be
659 used to derive the host name.
660
661d_gethostprotos (d_gethostprotos.U):
662 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
663 which indicates to the C program that <netdb.h> supplies
664 prototypes for the various gethost*() functions.
665 See also netdbtype.U for probing for various netdb types.
666
667d_getlogin (d_getlogin.U):
668 This variable conditionally defines the HAS_GETLOGIN symbol, which
669 indicates to the C program that the getlogin() routine is available
670 to get the login name.
671
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672d_getmnt (d_getmnt.U):
673 This variable conditionally defines the HAS_GETMNT symbol, which
674 indicates to the C program that the getmnt() routine is available
675 to retrieve one or more mount info blocks by filename.
676
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677d_getmntent (d_getmntent.U):
678 This variable conditionally defines the HAS_GETMNTENT symbol, which
679 indicates to the C program that the getmntent() routine is available
0617aed7 680 to iterate through mounted files to get their mount info.
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681
682d_getnbyaddr (d_getnbyad.U):
683 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
684 indicates to the C program that the getnetbyaddr() routine is available
685 to look up networks by their IP addresses.
686
687d_getnbyname (d_getnbynm.U):
688 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
689 indicates to the C program that the getnetbyname() routine is available
690 to look up networks by their names.
691
692d_getnent (d_getnent.U):
693 This variable conditionally defines HAS_GETNETENT if getnetent() is
694 available to look up network names in some data base or another.
695
696d_getnetprotos (d_getnetprotos.U):
697 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
698 which indicates to the C program that <netdb.h> supplies
699 prototypes for the various getnet*() functions.
700 See also netdbtype.U for probing for various netdb types.
701
702d_getpbyname (d_getprotby.U):
703 This variable conditionally defines the HAS_GETPROTOBYNAME
704 symbol, which indicates to the C program that the
705 getprotobyname() routine is available to look up protocols
706 by their name.
707
708d_getpbynumber (d_getprotby.U):
709 This variable conditionally defines the HAS_GETPROTOBYNUMBER
710 symbol, which indicates to the C program that the
711 getprotobynumber() routine is available to look up protocols
712 by their number.
713
714d_getpent (d_getpent.U):
715 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
716 available to look up protocols in some data base or another.
717
718d_getpgid (d_getpgid.U):
719 This variable conditionally defines the HAS_GETPGID symbol, which
720 indicates to the C program that the getpgid(pid) function
721 is available to get the process group id.
722
723d_getpgrp2 (d_getpgrp2.U):
724 This variable conditionally defines the HAS_GETPGRP2 symbol, which
725 indicates to the C program that the getpgrp2() (as in DG/UX) routine
726 is available to get the current process group.
727
728d_getpgrp (d_getpgrp.U):
729 This variable conditionally defines HAS_GETPGRP if getpgrp() is
730 available to get the current process group.
731
732d_getppid (d_getppid.U):
733 This variable conditionally defines the HAS_GETPPID symbol, which
734 indicates to the C program that the getppid() routine is available
735 to get the parent process ID.
736
737d_getprior (d_getprior.U):
738 This variable conditionally defines HAS_GETPRIORITY if getpriority()
739 is available to get a process's priority.
740
741d_getprotoprotos (d_getprotoprotos.U):
742 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
743 which indicates to the C program that <netdb.h> supplies
744 prototypes for the various getproto*() functions.
745 See also netdbtype.U for probing for various netdb types.
746
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747d_getprpwnam (d_getprpwnam.U):
748 This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
749 available to retrieve protected (shadow) password entries by name.
750
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751d_getpwent (d_getpwent.U):
752 This variable conditionally defines the HAS_GETPWENT symbol, which
753 indicates to the C program that the getpwent() routine is available
754 for sequential access of the passwd database.
755
756d_getsbyname (d_getsrvby.U):
757 This variable conditionally defines the HAS_GETSERVBYNAME
758 symbol, which indicates to the C program that the
759 getservbyname() routine is available to look up services
760 by their name.
761
762d_getsbyport (d_getsrvby.U):
763 This variable conditionally defines the HAS_GETSERVBYPORT
764 symbol, which indicates to the C program that the
765 getservbyport() routine is available to look up services
766 by their port.
767
768d_getsent (d_getsent.U):
769 This variable conditionally defines HAS_GETSERVENT if getservent() is
770 available to look up network services in some data base or another.
771
772d_getservprotos (d_getservprotos.U):
773 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
774 which indicates to the C program that <netdb.h> supplies
775 prototypes for the various getserv*() functions.
776 See also netdbtype.U for probing for various netdb types.
777
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778d_getspnam (d_getspnam.U):
779 This variable conditionally defines HAS_GETSPNAM if getspnam() is
780 available to retrieve SysV shadow password entries by name.
781
782d_gettimeod (d_ftime.U):
783 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
784 indicates that the gettimeofday() system call exists (to obtain a
785 sub-second accuracy clock). You should probably include <sys/resource.h>.
786
787d_gnulibc (d_gnulibc.U):
788 Defined if we're dealing with the GNU C Library.
789
790d_grpasswd (i_grp.U):
791 This variable conditionally defines GRPASSWD, which indicates
792 that struct group in <grp.h> contains gr_passwd.
793
794d_hasmntopt (d_hasmntopt.U):
795 This variable conditionally defines the HAS_HASMNTOPT symbol, which
796 indicates to the C program that the hasmntopt() routine is available
797 to query the mount options of file systems.
798
799d_htonl (d_htonl.U):
800 This variable conditionally defines HAS_HTONL if htonl() and its
801 friends are available to do network order byte swapping.
802
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803d_iconv (d_iconv.U):
804 This variable conditionally defines the HAS_ICONV symbol, which
805 indicates to the C program that the iconv() routine is available.
806
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807d_index (d_strchr.U):
808 This variable conditionally defines HAS_INDEX if index() and
809 rindex() are available for string searching.
810
811d_inetaton (d_inetaton.U):
812 This variable conditionally defines the HAS_INET_ATON symbol, which
813 indicates to the C program that the inet_aton() function is available
814 to parse IP address "dotted-quad" strings.
815
13b3f787 816d_int64_t (d_int64_t.U):
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817 This symbol will be defined if the C compiler supports int64_t.
818
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819d_isascii (d_isascii.U):
820 This variable conditionally defines the HAS_ISASCII constant,
821 which indicates to the C program that isascii() is available.
822
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823d_isnan (d_isnan.U):
824 This variable conditionally defines the HAS_ISNAN symbol, which
825 indicates to the C program that the isnan() routine is available.
826
827d_isnanl (d_isnanl.U):
828 This variable conditionally defines the HAS_ISNANL symbol, which
829 indicates to the C program that the isnanl() routine is available.
830
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831d_killpg (d_killpg.U):
832 This variable conditionally defines the HAS_KILLPG symbol, which
833 indicates to the C program that the killpg() routine is available
834 to kill process groups.
835
836d_lchown (d_lchown.U):
837 This variable conditionally defines the HAS_LCHOWN symbol, which
838 indicates to the C program that the lchown() routine is available
839 to operate on a symbolic link (instead of following the link).
840
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LV
841d_ldbl_dig (d_ldbl_dig.U):
842 This variable conditionally defines d_ldbl_dig if this system's
843 header files provide LDBL_DIG, which is the number of significant
844 digits in a long double precision number.
845
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846d_link (d_link.U):
847 This variable conditionally defines HAS_LINK if link() is
848 available to create hard links.
849
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850d_locconv (d_locconv.U):
851 This variable conditionally defines HAS_LOCALECONV if localeconv() is
852 available for numeric and monetary formatting conventions.
853
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854d_lockf (d_lockf.U):
855 This variable conditionally defines HAS_LOCKF if lockf() is
856 available to do file locking.
857
858d_longdbl (d_longdbl.U):
859 This variable conditionally defines HAS_LONG_DOUBLE if
860 the long double type is supported.
861
862d_longlong (d_longlong.U):
863 This variable conditionally defines HAS_LONG_LONG if
864 the long long type is supported.
865
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866d_lseekproto (d_lseekproto.U):
867 This variable conditionally defines the HAS_LSEEK_PROTO symbol,
868 which indicates to the C program that the system provides
869 a prototype for the lseek() function. Otherwise, it is
870 up to the program to supply one.
871
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872d_lstat (d_lstat.U):
873 This variable conditionally defines HAS_LSTAT if lstat() is
874 available to do file stats on symbolic links.
875
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876d_madvise (d_madvise.U):
877 This variable conditionally defines HAS_MADVISE if madvise() is
878 available to map a file into memory.
879
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880d_mblen (d_mblen.U):
881 This variable conditionally defines the HAS_MBLEN symbol, which
882 indicates to the C program that the mblen() routine is available
883 to find the number of bytes in a multibye character.
884
885d_mbstowcs (d_mbstowcs.U):
886 This variable conditionally defines the HAS_MBSTOWCS symbol, which
887 indicates to the C program that the mbstowcs() routine is available
888 to convert a multibyte string into a wide character string.
889
890d_mbtowc (d_mbtowc.U):
891 This variable conditionally defines the HAS_MBTOWC symbol, which
892 indicates to the C program that the mbtowc() routine is available
893 to convert multibyte to a wide character.
894
895d_memchr (d_memchr.U):
896 This variable conditionally defines the HAS_MEMCHR symbol, which
897 indicates to the C program that the memchr() routine is available
898 to locate characters within a C string.
899
900d_memcmp (d_memcmp.U):
901 This variable conditionally defines the HAS_MEMCMP symbol, which
902 indicates to the C program that the memcmp() routine is available
903 to compare blocks of memory.
904
905d_memcpy (d_memcpy.U):
906 This variable conditionally defines the HAS_MEMCPY symbol, which
907 indicates to the C program that the memcpy() routine is available
908 to copy blocks of memory.
909
910d_memmove (d_memmove.U):
911 This variable conditionally defines the HAS_MEMMOVE symbol, which
912 indicates to the C program that the memmove() routine is available
913 to copy potentatially overlapping blocks of memory.
914
915d_memset (d_memset.U):
916 This variable conditionally defines the HAS_MEMSET symbol, which
917 indicates to the C program that the memset() routine is available
918 to set blocks of memory.
919
920d_mkdir (d_mkdir.U):
921 This variable conditionally defines the HAS_MKDIR symbol, which
922 indicates to the C program that the mkdir() routine is available
923 to create directories..
924
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925d_mkdtemp (d_mkdtemp.U):
926 This variable conditionally defines the HAS_MKDTEMP symbol, which
927 indicates to the C program that the mkdtemp() routine is available
928 to exclusively create a uniquely named temporary directory.
929
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930d_mkfifo (d_mkfifo.U):
931 This variable conditionally defines the HAS_MKFIFO symbol, which
932 indicates to the C program that the mkfifo() routine is available.
933
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934d_mkstemp (d_mkstemp.U):
935 This variable conditionally defines the HAS_MKSTEMP symbol, which
936 indicates to the C program that the mkstemp() routine is available
937 to exclusively create and open a uniquely named temporary file.
938
939d_mkstemps (d_mkstemps.U):
940 This variable conditionally defines the HAS_MKSTEMPS symbol, which
941 indicates to the C program that the mkstemps() routine is available
942 to exclusively create and open a uniquely named (with a suffix)
943 temporary file.
944
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945d_mktime (d_mktime.U):
946 This variable conditionally defines the HAS_MKTIME symbol, which
947 indicates to the C program that the mktime() routine is available.
948
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949d_mmap (d_mmap.U):
950 This variable conditionally defines HAS_MMAP if mmap() is
951 available to map a file into memory.
952
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953d_modfl (d_modfl.U):
954 This variable conditionally defines the HAS_MODFL symbol, which
955 indicates to the C program that the modfl() routine is available.
956
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957d_mprotect (d_mprotect.U):
958 This variable conditionally defines HAS_MPROTECT if mprotect() is
959 available to modify the access protection of a memory mapped file.
960
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961d_msg (d_msg.U):
962 This variable conditionally defines the HAS_MSG symbol, which
963 indicates that the entire msg*(2) library is present.
964
965d_msg_ctrunc (d_socket.U):
966 This variable conditionally defines the HAS_MSG_CTRUNC symbol,
967 which indicates that the MSG_CTRUNC is available. #ifdef is
968 not enough because it may be an enum, glibc has been known to do this.
969
970d_msg_dontroute (d_socket.U):
971 This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
972 which indicates that the MSG_DONTROUTE is available. #ifdef is
973 not enough because it may be an enum, glibc has been known to do this.
974
975d_msg_oob (d_socket.U):
976 This variable conditionally defines the HAS_MSG_OOB symbol,
977 which indicates that the MSG_OOB is available. #ifdef is
978 not enough because it may be an enum, glibc has been known to do this.
979
980d_msg_peek (d_socket.U):
981 This variable conditionally defines the HAS_MSG_PEEK symbol,
982 which indicates that the MSG_PEEK is available. #ifdef is
983 not enough because it may be an enum, glibc has been known to do this.
984
985d_msg_proxy (d_socket.U):
986 This variable conditionally defines the HAS_MSG_PROXY symbol,
987 which indicates that the MSG_PROXY is available. #ifdef is
988 not enough because it may be an enum, glibc has been known to do this.
989
990d_msgctl (d_msgctl.U):
991 This variable conditionally defines the HAS_MSGCTL symbol, which
992 indicates to the C program that the msgctl() routine is available.
993
994d_msgget (d_msgget.U):
995 This variable conditionally defines the HAS_MSGGET symbol, which
996 indicates to the C program that the msgget() routine is available.
997
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998d_msgrcv (d_msgrcv.U):
999 This variable conditionally defines the HAS_MSGRCV symbol, which
1000 indicates to the C program that the msgrcv() routine is available.
1001
1002d_msgsnd (d_msgsnd.U):
1003 This variable conditionally defines the HAS_MSGSND symbol, which
1004 indicates to the C program that the msgsnd() routine is available.
1005
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1006d_msync (d_msync.U):
1007 This variable conditionally defines HAS_MSYNC if msync() is
1008 available to synchronize a mapped file.
1009
1010d_munmap (d_munmap.U):
1011 This variable conditionally defines HAS_MUNMAP if munmap() is
1012 available to unmap a region mapped by mmap().
1013
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1014d_mymalloc (mallocsrc.U):
1015 This variable conditionally defines MYMALLOC in case other parts
1016 of the source want to take special action if MYMALLOC is used.
1017 This may include different sorts of profiling or error detection.
1018
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1019d_nice (d_nice.U):
1020 This variable conditionally defines the HAS_NICE symbol, which
1021 indicates to the C program that the nice() routine is available.
1022
78691af5 1023d_nv_preserves_uv (perlxv.U):
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1024 This variable indicates whether a variable of type nvtype
1025 can preserve all the bits a variable of type uvtype.
1026
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1027d_nv_preserves_uv_bits (perlxv.U):
1028 This variable indicates how many of bits type uvtype
1029 a variable nvtype can preserve.
1030
c890dc6c 1031d_off64_t (d_off64_t.U):
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1032 This symbol will be defined if the C compiler supports off64_t.
1033
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1034d_old_pthread_create_joinable (d_pthrattrj.U):
1035 This variable conditionally defines pthread_create_joinable.
1036 undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
1037
1038d_oldpthreads (usethreads.U):
1039 This variable conditionally defines the OLD_PTHREADS_API symbol,
1040 and indicates that Perl should be built to use the old
8c09e4ca 1041 draft POSIX threads API. This is only potentially meaningful if
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1042 usethreads is set.
1043
1044d_oldsock (d_socket.U):
1045 This variable conditionally defines the OLDSOCKET symbol, which
1046 indicates that the BSD socket interface is based on 4.1c and not 4.2.
1047
1048d_open3 (d_open3.U):
1049 This variable conditionally defines the HAS_OPEN3 manifest constant,
1050 which indicates to the C program that the 3 argument version of
1051 the open(2) function is available.
1052
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1053d_pathconf (d_pathconf.U):
1054 This variable conditionally defines the HAS_PATHCONF symbol, which
1055 indicates to the C program that the pathconf() routine is available
1056 to determine file-system related limits and options associated
1057 with a given filename.
1058
1059d_pause (d_pause.U):
1060 This variable conditionally defines the HAS_PAUSE symbol, which
1061 indicates to the C program that the pause() routine is available
1062 to suspend a process until a signal is received.
1063
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1064d_perl_otherlibdirs (otherlibdirs.U):
1065 This variable conditionally defines PERL_OTHERLIBDIRS, which
1066 contains a colon-separated set of paths for the perl binary to
1067 include in @INC. See also otherlibdirs.
1068
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1069d_phostname (d_gethname.U):
1070 This variable conditionally defines the HAS_PHOSTNAME symbol, which
1071 contains the shell command which, when fed to popen(), may be
1072 used to derive the host name.
1073
1074d_pipe (d_pipe.U):
1075 This variable conditionally defines the HAS_PIPE symbol, which
1076 indicates to the C program that the pipe() routine is available
1077 to create an inter-process channel.
1078
1079d_poll (d_poll.U):
1080 This variable conditionally defines the HAS_POLL symbol, which
1081 indicates to the C program that the poll() routine is available
1082 to poll active file descriptors.
1083
1084d_portable (d_portable.U):
1085 This variable conditionally defines the PORTABLE symbol, which
1086 indicates to the C program that it should not assume that it is
1087 running on the machine it was compiled on.
1088
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1089d_PRId64 (quadfio.U):
1090 This variable conditionally defines the PERL_PRId64 symbol, which
1091 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1092
1093d_PRIeldbl (longdblfio.U):
1094 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1095 indiciates that stdio has a symbol to print long doubles.
1096
1097d_PRIEldbl (longdblfio.U):
1098 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1099 indiciates that stdio has a symbol to print long doubles.
1100
1101d_PRIfldbl (longdblfio.U):
1102 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1103 indiciates that stdio has a symbol to print long doubles.
1104
1105d_PRIFldbl (longdblfio.U):
1106 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1107 indiciates that stdio has a symbol to print long doubles.
1108
1109d_PRIgldbl (longdblfio.U):
1110 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1111 indiciates that stdio has a symbol to print long doubles.
1112
1113d_PRIGldbl (longdblfio.U):
1114 This variable conditionally defines the PERL_PRIfldlbl symbol, which
1115 indiciates that stdio has a symbol to print long doubles.
1116
1117d_PRIi64 (quadfio.U):
1118 This variable conditionally defines the PERL_PRIi64 symbol, which
1119 indiciates that stdio has a symbol to print 64-bit decimal numbers.
1120
1121d_PRIo64 (quadfio.U):
1122 This variable conditionally defines the PERL_PRIo64 symbol, which
1123 indiciates that stdio has a symbol to print 64-bit octal numbers.
1124
1125d_PRIu64 (quadfio.U):
1126 This variable conditionally defines the PERL_PRIu64 symbol, which
1127 indiciates that stdio has a symbol to print 64-bit unsigned decimal
1128 numbers.
1129
1130d_PRIx64 (quadfio.U):
1131 This variable conditionally defines the PERL_PRIx64 symbol, which
1132 indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
1133
1134d_PRIX64 (quadfio.U):
1135 This variable conditionally defines the PERL_PRIX64 symbol, which
1136 indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
1137
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1138d_pthread_yield (d_pthread_y.U):
1139 This variable conditionally defines the HAS_PTHREAD_YIELD
1140 symbol if the pthread_yield routine is available to yield
1141 the execution of the current thread.
1142
1143d_pwage (i_pwd.U):
1144 This variable conditionally defines PWAGE, which indicates
1145 that struct passwd contains pw_age.
1146
1147d_pwchange (i_pwd.U):
1148 This variable conditionally defines PWCHANGE, which indicates
1149 that struct passwd contains pw_change.
1150
1151d_pwclass (i_pwd.U):
1152 This variable conditionally defines PWCLASS, which indicates
1153 that struct passwd contains pw_class.
1154
1155d_pwcomment (i_pwd.U):
1156 This variable conditionally defines PWCOMMENT, which indicates
1157 that struct passwd contains pw_comment.
1158
1159d_pwexpire (i_pwd.U):
1160 This variable conditionally defines PWEXPIRE, which indicates
1161 that struct passwd contains pw_expire.
1162
1163d_pwgecos (i_pwd.U):
1164 This variable conditionally defines PWGECOS, which indicates
1165 that struct passwd contains pw_gecos.
1166
1167d_pwpasswd (i_pwd.U):
1168 This variable conditionally defines PWPASSWD, which indicates
1169 that struct passwd contains pw_passwd.
1170
1171d_pwquota (i_pwd.U):
1172 This variable conditionally defines PWQUOTA, which indicates
1173 that struct passwd contains pw_quota.
1174
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1175d_qgcvt (d_qgcvt.U):
1176 This variable conditionally defines the HAS_QGCVT symbol, which
1177 indicates to the C program that the qgcvt() routine is available.
1178
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1179d_quad (quadtype.U):
1180 This variable, if defined, tells that there's a 64-bit integer type,
1181 quadtype.
1182
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1183d_readdir (d_readdir.U):
1184 This variable conditionally defines HAS_READDIR if readdir() is
1185 available to read directory entries.
1186
1187d_readlink (d_readlink.U):
1188 This variable conditionally defines the HAS_READLINK symbol, which
1189 indicates to the C program that the readlink() routine is available
1190 to read the value of a symbolic link.
1191
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1192d_rename (d_rename.U):
1193 This variable conditionally defines the HAS_RENAME symbol, which
1194 indicates to the C program that the rename() routine is available
1195 to rename files.
1196
1197d_rewinddir (d_readdir.U):
1198 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
1199 available.
1200
1201d_rmdir (d_rmdir.U):
1202 This variable conditionally defines HAS_RMDIR if rmdir() is
1203 available to remove directories.
1204
1205d_safebcpy (d_safebcpy.U):
1206 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
1207 the bcopy() routine can do overlapping copies.
1208
1209d_safemcpy (d_safemcpy.U):
1210 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
1211 the memcpy() routine can do overlapping copies.
1212
1213d_sanemcmp (d_sanemcmp.U):
1214 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
1215 the memcpy() routine is available and can be used to compare relative
1216 magnitudes of chars with their high bits set.
1217
1218d_sched_yield (d_pthread_y.U):
1219 This variable conditionally defines the HAS_SCHED_YIELD
1220 symbol if the sched_yield routine is available to yield
1221 the execution of the current thread.
1222
1223d_scm_rights (d_socket.U):
1224 This variable conditionally defines the HAS_SCM_RIGHTS symbol,
1225 which indicates that the SCM_RIGHTS is available. #ifdef is
1226 not enough because it may be an enum, glibc has been known to do this.
1227
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1228d_seekdir (d_readdir.U):
1229 This variable conditionally defines HAS_SEEKDIR if seekdir() is
1230 available.
1231
1232d_select (d_select.U):
1233 This variable conditionally defines HAS_SELECT if select() is
1234 available to select active file descriptors. A <sys/time.h>
1235 inclusion may be necessary for the timeout field.
1236
1237d_sem (d_sem.U):
1238 This variable conditionally defines the HAS_SEM symbol, which
1239 indicates that the entire sem*(2) library is present.
1240
1241d_semctl (d_semctl.U):
1242 This variable conditionally defines the HAS_SEMCTL symbol, which
1243 indicates to the C program that the semctl() routine is available.
1244
1245d_semctl_semid_ds (d_union_semun.U):
1246 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
1247 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
1248
1249d_semctl_semun (d_union_semun.U):
1250 This variable conditionally defines USE_SEMCTL_SEMUN, which
1251 indicates that union semun is to be used for semctl IPC_STAT.
1252
1253d_semget (d_semget.U):
1254 This variable conditionally defines the HAS_SEMGET symbol, which
1255 indicates to the C program that the semget() routine is available.
1256
1257d_semop (d_semop.U):
1258 This variable conditionally defines the HAS_SEMOP symbol, which
1259 indicates to the C program that the semop() routine is available.
1260
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1261d_setegid (d_setegid.U):
1262 This variable conditionally defines the HAS_SETEGID symbol, which
1263 indicates to the C program that the setegid() routine is available
1264 to change the effective gid of the current program.
1265
1266d_seteuid (d_seteuid.U):
1267 This variable conditionally defines the HAS_SETEUID symbol, which
1268 indicates to the C program that the seteuid() routine is available
1269 to change the effective uid of the current program.
1270
1271d_setgrent (d_setgrent.U):
1272 This variable conditionally defines the HAS_SETGRENT symbol, which
1273 indicates to the C program that the setgrent() routine is available
1274 for initializing sequential access to the group database.
1275
1276d_setgrps (d_setgrps.U):
1277 This variable conditionally defines the HAS_SETGROUPS symbol, which
1278 indicates to the C program that the setgroups() routine is available
1279 to set the list of process groups.
1280
1281d_sethent (d_sethent.U):
1282 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
1283 available.
1284
1285d_setlinebuf (d_setlnbuf.U):
1286 This variable conditionally defines the HAS_SETLINEBUF symbol, which
1287 indicates to the C program that the setlinebuf() routine is available
1288 to change stderr or stdout from block-buffered or unbuffered to a
1289 line-buffered mode.
1290
1291d_setlocale (d_setlocale.U):
1292 This variable conditionally defines HAS_SETLOCALE if setlocale() is
1293 available to handle locale-specific ctype implementations.
1294
1295d_setnent (d_setnent.U):
1296 This variable conditionally defines HAS_SETNETENT if setnetent() is
1297 available.
1298
1299d_setpent (d_setpent.U):
1300 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
1301 available.
1302
1303d_setpgid (d_setpgid.U):
1304 This variable conditionally defines the HAS_SETPGID symbol if the
1305 setpgid(pid, gpid) function is available to set process group ID.
1306
1307d_setpgrp2 (d_setpgrp2.U):
1308 This variable conditionally defines the HAS_SETPGRP2 symbol, which
1309 indicates to the C program that the setpgrp2() (as in DG/UX) routine
1310 is available to set the current process group.
1311
1312d_setpgrp (d_setpgrp.U):
1313 This variable conditionally defines HAS_SETPGRP if setpgrp() is
1314 available to set the current process group.
1315
1316d_setprior (d_setprior.U):
1317 This variable conditionally defines HAS_SETPRIORITY if setpriority()
1318 is available to set a process's priority.
1319
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1320d_setproctitle (d_setproctitle.U):
1321 This variable conditionally defines the HAS_SETPROCTITLE symbol,
1322 which indicates to the C program that the setproctitle() routine
1323 is available.
1324
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1325d_setpwent (d_setpwent.U):
1326 This variable conditionally defines the HAS_SETPWENT symbol, which
1327 indicates to the C program that the setpwent() routine is available
1328 for initializing sequential access to the passwd database.
1329
1330d_setregid (d_setregid.U):
1331 This variable conditionally defines HAS_SETREGID if setregid() is
1332 available to change the real and effective gid of the current
1333 process.
1334
1335d_setresgid (d_setregid.U):
1336 This variable conditionally defines HAS_SETRESGID if setresgid() is
1337 available to change the real, effective and saved gid of the current
1338 process.
1339
1340d_setresuid (d_setreuid.U):
1341 This variable conditionally defines HAS_SETREUID if setresuid() is
1342 available to change the real, effective and saved uid of the current
1343 process.
1344
1345d_setreuid (d_setreuid.U):
1346 This variable conditionally defines HAS_SETREUID if setreuid() is
1347 available to change the real and effective uid of the current
1348 process.
1349
1350d_setrgid (d_setrgid.U):
1351 This variable conditionally defines the HAS_SETRGID symbol, which
1352 indicates to the C program that the setrgid() routine is available
1353 to change the real gid of the current program.
1354
1355d_setruid (d_setruid.U):
1356 This variable conditionally defines the HAS_SETRUID symbol, which
1357 indicates to the C program that the setruid() routine is available
1358 to change the real uid of the current program.
1359
1360d_setsent (d_setsent.U):
1361 This variable conditionally defines HAS_SETSERVENT if setservent() is
1362 available.
1363
1364d_setsid (d_setsid.U):
1365 This variable conditionally defines HAS_SETSID if setsid() is
1366 available to set the process group ID.
1367
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1368d_setvbuf (d_setvbuf.U):
1369 This variable conditionally defines the HAS_SETVBUF symbol, which
1370 indicates to the C program that the setvbuf() routine is available
1371 to change buffering on an open stdio stream.
1372
1373d_sfio (d_sfio.U):
1374 This variable conditionally defines the USE_SFIO symbol,
1375 and indicates whether sfio is available (and should be used).
1376
1377d_shm (d_shm.U):
1378 This variable conditionally defines the HAS_SHM symbol, which
1379 indicates that the entire shm*(2) library is present.
1380
1381d_shmat (d_shmat.U):
1382 This variable conditionally defines the HAS_SHMAT symbol, which
1383 indicates to the C program that the shmat() routine is available.
1384
1385d_shmatprototype (d_shmat.U):
1386 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
1387 symbol, which indicates that sys/shm.h has a prototype for
1388 shmat.
1389
1390d_shmctl (d_shmctl.U):
1391 This variable conditionally defines the HAS_SHMCTL symbol, which
1392 indicates to the C program that the shmctl() routine is available.
1393
1394d_shmdt (d_shmdt.U):
1395 This variable conditionally defines the HAS_SHMDT symbol, which
1396 indicates to the C program that the shmdt() routine is available.
1397
1398d_shmget (d_shmget.U):
1399 This variable conditionally defines the HAS_SHMGET symbol, which
1400 indicates to the C program that the shmget() routine is available.
1401
1402d_sigaction (d_sigaction.U):
1403 This variable conditionally defines the HAS_SIGACTION symbol, which
1404 indicates that the Vr4 sigaction() routine is available.
1405
1406d_sigsetjmp (d_sigsetjmp.U):
1407 This variable conditionally defines the HAS_SIGSETJMP symbol,
1408 which indicates that the sigsetjmp() routine is available to
1409 call setjmp() and optionally save the process's signal mask.
1410
1411d_socket (d_socket.U):
1412 This variable conditionally defines HAS_SOCKET, which indicates
1413 that the BSD socket interface is supported.
1414
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1415d_socklen_t (d_socklen_t.U):
1416 This symbol will be defined if the C compiler supports socklen_t.
1417
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1418d_sockpair (d_socket.U):
1419 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
1420 indicates that the BSD socketpair() is supported.
1421
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1422d_sqrtl (d_sqrtl.U):
1423 This variable conditionally defines the HAS_SQRTL symbol, which
1424 indicates to the C program that the sqrtl() routine is available.
1425
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1426d_statblks (d_statblks.U):
1427 This variable conditionally defines USE_STAT_BLOCKS
1428 if this system has a stat structure declaring
1429 st_blksize and st_blocks.
1430
ad27e871 1431d_statfs_f_flags (d_statfs_f_flags.U):
0545a864 1432 This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
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1433 symbol, which indicates to struct statfs from has f_flags member.
1434 This kind of struct statfs is coming from sys/mount.h (BSD),
1435 not from sys/statfs.h (SYSV).
1436
ad27e871 1437d_statfs_s (d_statfs_s.U):
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JH
1438 This variable conditionally defines the HAS_STRUCT_STATFS symbol,
1439 which indicates that the struct statfs is supported.
1440
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1441d_statvfs (d_statvfs.U):
1442 This variable conditionally defines the HAS_STATVFS symbol, which
1443 indicates to the C program that the statvfs() routine is available.
1444
1445d_stdio_cnt_lval (d_stdstdio.U):
1446 This variable conditionally defines STDIO_CNT_LVALUE if the
1447 FILE_cnt macro can be used as an lvalue.
1448
1449d_stdio_ptr_lval (d_stdstdio.U):
1450 This variable conditionally defines STDIO_PTR_LVALUE if the
1451 FILE_ptr macro can be used as an lvalue.
1452
1453d_stdio_stream_array (stdio_streams.U):
1454 This variable tells whether there is an array holding
1455 the stdio streams.
1456
1457d_stdiobase (d_stdstdio.U):
1458 This variable conditionally defines USE_STDIO_BASE if this system
1459 has a FILE structure declaring a usable _base field (or equivalent)
1460 in stdio.h.
1461
1462d_stdstdio (d_stdstdio.U):
1463 This variable conditionally defines USE_STDIO_PTR if this system
1464 has a FILE structure declaring usable _ptr and _cnt fields (or
1465 equivalent) in stdio.h.
1466
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1467d_strchr (d_strchr.U):
1468 This variable conditionally defines HAS_STRCHR if strchr() and
1469 strrchr() are available for string searching.
1470
1471d_strcoll (d_strcoll.U):
1472 This variable conditionally defines HAS_STRCOLL if strcoll() is
1473 available to compare strings using collating information.
1474
1475d_strctcpy (d_strctcpy.U):
1476 This variable conditionally defines the USE_STRUCT_COPY symbol, which
1477 indicates to the C program that this C compiler knows how to copy
1478 structures.
1479
1480d_strerrm (d_strerror.U):
1481 This variable holds what Strerrr is defined as to translate an error
1482 code condition into an error message string. It could be 'strerror'
1483 or a more complex macro emulating strrror with sys_errlist[], or the
1484 "unknown" string when both strerror and sys_errlist are missing.
1485
1486d_strerror (d_strerror.U):
1487 This variable conditionally defines HAS_STRERROR if strerror() is
1488 available to translate error numbers to strings.
1489
1490d_strtod (d_strtod.U):
1491 This variable conditionally defines the HAS_STRTOD symbol, which
1492 indicates to the C program that the strtod() routine is available
1493 to provide better numeric string conversion than atof().
1494
1495d_strtol (d_strtol.U):
1496 This variable conditionally defines the HAS_STRTOL symbol, which
1497 indicates to the C program that the strtol() routine is available
1498 to provide better numeric string conversion than atoi() and friends.
1499
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1500d_strtold (d_strtold.U):
1501 This variable conditionally defines the HAS_STRTOLD symbol, which
1502 indicates to the C program that the strtold() routine is available.
1503
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1504d_strtoll (d_strtoll.U):
1505 This variable conditionally defines the HAS_STRTOLL symbol, which
1506 indicates to the C program that the strtoll() routine is available.
1507
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1508d_strtoul (d_strtoul.U):
1509 This variable conditionally defines the HAS_STRTOUL symbol, which
1510 indicates to the C program that the strtoul() routine is available
1511 to provide conversion of strings to unsigned long.
1512
ff935051 1513d_strtoull (d_strtoull.U):
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JH
1514 This variable conditionally defines the HAS_STRTOULL symbol, which
1515 indicates to the C program that the strtoull() routine is available.
1516
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1517d_strtouq (d_strtouq.U):
1518 This variable conditionally defines the HAS_STRTOUQ symbol, which
1519 indicates to the C program that the strtouq() routine is available.
1520
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1521d_strxfrm (d_strxfrm.U):
1522 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1523 available to transform strings.
1524
1525d_suidsafe (d_dosuid.U):
1526 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1527 if setuid scripts can be secure. This test looks in /dev/fd/.
1528
1529d_symlink (d_symlink.U):
1530 This variable conditionally defines the HAS_SYMLINK symbol, which
1531 indicates to the C program that the symlink() routine is available
1532 to create symbolic links.
1533
1534d_syscall (d_syscall.U):
1535 This variable conditionally defines HAS_SYSCALL if syscall() is
1536 available call arbitrary system calls.
1537
1538d_sysconf (d_sysconf.U):
1539 This variable conditionally defines the HAS_SYSCONF symbol, which
1540 indicates to the C program that the sysconf() routine is available
1541 to determine system related limits and options.
1542
1543d_sysernlst (d_strerror.U):
1544 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1545 is available to translate error numbers to the symbolic name.
1546
1547d_syserrlst (d_strerror.U):
1548 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1549 available to translate error numbers to strings.
1550
1551d_system (d_system.U):
1552 This variable conditionally defines HAS_SYSTEM if system() is
1553 available to issue a shell command.
1554
1555d_tcgetpgrp (d_tcgtpgrp.U):
1556 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1557 indicates to the C program that the tcgetpgrp() routine is available.
1558 to get foreground process group ID.
1559
1560d_tcsetpgrp (d_tcstpgrp.U):
1561 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1562 indicates to the C program that the tcsetpgrp() routine is available
1563 to set foreground process group ID.
1564
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1565d_telldir (d_readdir.U):
1566 This variable conditionally defines HAS_TELLDIR if telldir() is
1567 available.
1568
1569d_telldirproto (d_telldirproto.U):
1570 This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
1571 which indicates to the C program that the system provides
1572 a prototype for the telldir() function. Otherwise, it is
1573 up to the program to supply one.
1574
1575d_time (d_time.U):
1576 This variable conditionally defines the HAS_TIME symbol, which indicates
1577 that the time() routine exists. The time() routine is normaly
1578 provided on UNIX systems.
1579
1580d_times (d_times.U):
1581 This variable conditionally defines the HAS_TIMES symbol, which indicates
1582 that the times() routine exists. The times() routine is normaly
1583 provided on UNIX systems. You may have to include <sys/times.h>.
1584
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1585d_truncate (d_truncate.U):
1586 This variable conditionally defines HAS_TRUNCATE if truncate() is
1587 available to truncate files.
1588
1589d_tzname (d_tzname.U):
1590 This variable conditionally defines HAS_TZNAME if tzname[] is
1591 available to access timezone names.
1592
1593d_umask (d_umask.U):
1594 This variable conditionally defines the HAS_UMASK symbol, which
1595 indicates to the C program that the umask() routine is available.
1596 to set and get the value of the file creation mask.
1597
1598d_uname (d_gethname.U):
1599 This variable conditionally defines the HAS_UNAME symbol, which
1600 indicates to the C program that the uname() routine may be
1601 used to derive the host name.
1602
1603d_union_semun (d_union_semun.U):
1604 This variable conditionally defines HAS_UNION_SEMUN if the
1605 union semun is defined by including <sys/sem.h>.
1606
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1607d_ustat (d_ustat.U):
1608 This variable conditionally defines HAS_USTAT if ustat() is
1609 available to query file system statistics by dev_t.
1610
526fdc24
MS
1611d_vendorarch (vendorarch.U):
1612 This variable conditionally defined PERL_VENDORARCH.
1613
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1614d_vendorbin (vendorbin.U):
1615 This variable conditionally defines PERL_VENDORBIN.
1616
a3635516
JH
1617d_vendorlib (vendorlib.U):
1618 This variable conditionally defines PERL_VENDORLIB.
1619
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1620d_vfork (d_vfork.U):
1621 This variable conditionally defines the HAS_VFORK symbol, which
1622 indicates the vfork() routine is available.
1623
1624d_void_closedir (d_closedir.U):
1625 This variable conditionally defines VOID_CLOSEDIR if closedir()
1626 does not return a value.
1627
1628d_voidsig (d_voidsig.U):
1629 This variable conditionally defines VOIDSIG if this system
1630 declares "void (*signal(...))()" in signal.h. The old way was to
1631 declare it as "int (*signal(...))()".
1632
1633d_voidtty (i_sysioctl.U):
1634 This variable conditionally defines USE_IOCNOTTY to indicate that the
1635 ioctl() call with TIOCNOTTY should be used to void tty association.
1636 Otherwise (on USG probably), it is enough to close the standard file
1637 decriptors and do a setpgrp().
1638
1639d_volatile (d_volatile.U):
1640 This variable conditionally defines the HASVOLATILE symbol, which
1641 indicates to the C program that this C compiler knows about the
1642 volatile declaration.
1643
1644d_vprintf (d_vprintf.U):
1645 This variable conditionally defines the HAS_VPRINTF symbol, which
1646 indicates to the C program that the vprintf() routine is available
1647 to printf with a pointer to an argument list.
1648
1649d_wait4 (d_wait4.U):
1650 This variable conditionally defines the HAS_WAIT4 symbol, which
1651 indicates the wait4() routine is available.
1652
1653d_waitpid (d_waitpid.U):
1654 This variable conditionally defines HAS_WAITPID if waitpid() is
1655 available to wait for child process.
1656
1657d_wcstombs (d_wcstombs.U):
1658 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1659 indicates to the C program that the wcstombs() routine is available
1660 to convert wide character strings to multibyte strings.
1661
1662d_wctomb (d_wctomb.U):
1663 This variable conditionally defines the HAS_WCTOMB symbol, which
1664 indicates to the C program that the wctomb() routine is available
1665 to convert a wide character to a multibyte.
1666
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1667d_xenix (Guess.U):
1668 This variable conditionally defines the symbol XENIX, which alerts
1669 the C program that it runs under Xenix.
1670
1671date (Loc.U):
5bf26616 1672 This variable is used internally by Configure to determine the
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1673 full pathname (if any) of the date program. After Configure runs,
1674 the value is reset to a plain "date" and is not useful.
1675
1676db_hashtype (i_db.U):
1677 This variable contains the type of the hash structure element
1678 in the <db.h> header file. In older versions of DB, it was
1679 int, while in newer ones it is u_int32_t.
1680
1681db_prefixtype (i_db.U):
1682 This variable contains the type of the prefix structure element
1683 in the <db.h> header file. In older versions of DB, it was
1684 int, while in newer ones it is size_t.
1685
1686defvoidused (voidflags.U):
1687 This variable contains the default value of the VOIDUSED symbol (15).
1688
1689direntrytype (i_dirent.U):
1690 This symbol is set to 'struct direct' or 'struct dirent' depending on
1691 whether dirent is available or not. You should use this pseudo type to
1692 portably declare your directory entries.
1693
1694dlext (dlext.U):
1695 This variable contains the extension that is to be used for the
1696 dynamically loaded modules that perl generaties.
1697
1698dlsrc (dlsrc.U):
1699 This variable contains the name of the dynamic loading file that
1700 will be used with the package.
1701
1702doublesize (doublesize.U):
1703 This variable contains the value of the DOUBLESIZE symbol, which
1704 indicates to the C program how many bytes there are in a double.
1705
1706drand01 (randfunc.U):
1707 Indicates the macro to be used to generate normalized
1708 random numbers. Uses randfunc, often divided by
1709 (double) (((unsigned long) 1 << randbits)) in order to
1710 normalize the result.
1711 In C programs, the macro 'Drand01' is mapped to drand01.
1712
1713dynamic_ext (Extensions.U):
1714 This variable holds a list of XS extension files we want to
1715 link dynamically into the package. It is used by Makefile.
1716
1717eagain (nblock_io.U):
1718 This variable bears the symbolic errno code set by read() when no
1719 data is present on the file and non-blocking I/O was enabled (otherwise,
1720 read() blocks naturally).
1721
1722ebcdic (ebcdic.U):
1723 This variable conditionally defines EBCDIC if this
1724 system uses EBCDIC encoding. Among other things, this
1725 means that the character ranges are not contiguous.
1726 See trnl.U
1727
1728echo (Loc.U):
5bf26616 1729 This variable is used internally by Configure to determine the
781b178c
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1730 full pathname (if any) of the echo program. After Configure runs,
1731 the value is reset to a plain "echo" and is not useful.
1732
1733egrep (Loc.U):
5bf26616 1734 This variable is used internally by Configure to determine the
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1735 full pathname (if any) of the egrep program. After Configure runs,
1736 the value is reset to a plain "egrep" and is not useful.
1737
1738emacs (Loc.U):
1739 This variable is defined but not used by Configure.
1740 The value is a plain '' and is not useful.
1741
1742eunicefix (Init.U):
1743 When running under Eunice this variable contains a command which will
1744 convert a shell script to the proper form of text file for it to be
1745 executable by the shell. On other systems it is a no-op.
1746
1747exe_ext (Unix.U):
1748 This is an old synonym for _exe.
1749
1750expr (Loc.U):
5bf26616 1751 This variable is used internally by Configure to determine the
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1752 full pathname (if any) of the expr program. After Configure runs,
1753 the value is reset to a plain "expr" and is not useful.
1754
1755extensions (Extensions.U):
1756 This variable holds a list of all extension files (both XS and
1757 non-xs linked into the package. It is propagated to Config.pm
1758 and is typically used to test whether a particular extesion
1759 is available.
1760
1761fflushall (fflushall.U):
1762 This symbol, if defined, tells that to flush
1763 all pending stdio output one must loop through all
1764 the stdio file handles stored in an array and fflush them.
1765 Note that if fflushNULL is defined, fflushall will not
1766 even be probed for and will be left undefined.
1767
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1768fflushNULL (fflushall.U):
1769 This symbol, if defined, tells that fflush(NULL) does flush
1770 all pending stdio output.
1771
781b178c 1772find (Loc.U):
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1773 This variable is defined but not used by Configure.
1774 The value is a plain '' and is not useful.
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1775
1776firstmakefile (Unix.U):
1777 This variable defines the first file searched by make. On unix,
1778 it is makefile (then Makefile). On case-insensitive systems,
1779 it might be something else. This is only used to deal with
1780 convoluted make depend tricks.
1781
1782flex (Loc.U):
1783 This variable is defined but not used by Configure.
1784 The value is a plain '' and is not useful.
1785
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1786fpossize (fpossize.U):
1787 This variable contains the size of a fpostype in bytes.
1788
781b178c 1789fpostype (fpostype.U):
a22e52b9 1790 This variable defines Fpos_t to be something like fpos_t, long,
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1791 uint, or whatever type is used to declare file positions in libc.
1792
1793freetype (mallocsrc.U):
1794 This variable contains the return type of free(). It is usually
1795 void, but occasionally int.
1796
1797full_ar (Loc_ar.U):
1798 This variable contains the full pathname to 'ar', whether or
1799 not the user has specified 'portability'. This is only used
1800 in the Makefile.SH.
1801
1802full_csh (d_csh.U):
1803 This variable contains the full pathname to 'csh', whether or
1804 not the user has specified 'portability'. This is only used
1805 in the compiled C program, and we assume that all systems which
1806 can share this executable will have the same full pathname to
1807 'csh.'
1808
1809full_sed (Loc_sed.U):
1810 This variable contains the full pathname to 'sed', whether or
1811 not the user has specified 'portability'. This is only used
1812 in the compiled C program, and we assume that all systems which
1813 can share this executable will have the same full pathname to
1814 'sed.'
1815
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1816gccosandvers (gccvers.U):
1817 If GNU cc (gcc) is used, this variable the operating system and
1818 version used to compile the gcc. It is set to '' if not gcc,
1819 or if nothing useful can be parsed as the os version.
1820
1821gccversion (gccvers.U):
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1822 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1823 indicate whether the compiler is version 1 or 2. This is used in
1824 setting some of the default cflags. It is set to '' if not gcc.
1825
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1826gidformat (gidf.U):
1827 This variable contains the format string used for printing a Gid_t.
1828
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1829gidsign (gidsign.U):
1830 This variable contains the signedness of a gidtype.
1831 1 for unsigned, -1 for signed.
1832
1833gidsize (gidsize.U):
1834 This variable contains the size of a gidtype in bytes.
1835
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1836gidtype (gidtype.U):
1837 This variable defines Gid_t to be something like gid_t, int,
1838 ushort, or whatever type is used to declare the return type
1839 of getgid(). Typically, it is the type of group ids in the kernel.
1840
1841glibpth (libpth.U):
1842 This variable holds the general path (space-separated) used to
1843 find libraries. It may contain directories that do not exist on
1844 this platform, libpth is the cleaned-up version.
1845
1846grep (Loc.U):
5bf26616 1847 This variable is used internally by Configure to determine the
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1848 full pathname (if any) of the grep program. After Configure runs,
1849 the value is reset to a plain "grep" and is not useful.
1850
1851groupcat (nis.U):
1852 This variable contains a command that produces the text of the
1853 /etc/group file. This is normally "cat /etc/group", but can be
1854 "ypcat group" when NIS is used.
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GS
1855 On some systems, such as os390, there may be no equivalent
1856 command, in which case this variable is unset.
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1857
1858groupstype (groupstype.U):
1859 This variable defines Groups_t to be something like gid_t, int,
1860 ushort, or whatever type is used for the second argument to
1861 getgroups() and setgroups(). Usually, this is the same as
1862 gidtype (gid_t), but sometimes it isn't.
1863
1864gzip (Loc.U):
5bf26616 1865 This variable is used internally by Configure to determine the
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1866 full pathname (if any) of the gzip program. After Configure runs,
1867 the value is reset to a plain "gzip" and is not useful.
1868
1869h_fcntl (h_fcntl.U):
1870 This is variable gets set in various places to tell i_fcntl that
1871 <fcntl.h> should be included.
1872
1873h_sysfile (h_sysfile.U):
1874 This is variable gets set in various places to tell i_sys_file that
1875 <sys/file.h> should be included.
1876
1877hint (Oldconfig.U):
1878 Gives the type of hints used for previous answers. May be one of
1879 "default", "recommended" or "previous".
1880
1881hostcat (nis.U):
1882 This variable contains a command that produces the text of the
1883 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1884 "ypcat hosts" when NIS is used.
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1885 On some systems, such as os390, there may be no equivalent
1886 command, in which case this variable is unset.
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1887
1888huge (models.U):
1889 This variable contains a flag which will tell the C compiler and loader
1890 to produce a program running with a huge memory model. If the
1891 huge model is not supported, contains the flag to produce large
1892 model programs. It is up to the Makefile to use this.
1893
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1894i16size (perlxv.U):
1895 This variable is the size of an I16 in bytes.
1896
1897i16type (perlxv.U):
1898 This variable contains the C type used for Perl's I16.
1899
1900i32size (perlxv.U):
1901 This variable is the size of an I32 in bytes.
1902
1903i32type (perlxv.U):
1904 This variable contains the C type used for Perl's I32.
1905
1906i64size (perlxv.U):
1907 This variable is the size of an I64 in bytes.
1908
1909i64type (perlxv.U):
1910 This variable contains the C type used for Perl's I64.
1911
1912i8size (perlxv.U):
1913 This variable is the size of an I8 in bytes.
1914
1915i8type (perlxv.U):
1916 This variable contains the C type used for Perl's I8.
1917
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1918i_arpainet (i_arpainet.U):
1919 This variable conditionally defines the I_ARPA_INET symbol,
1920 and indicates whether a C program should include <arpa/inet.h>.
1921
1922i_bsdioctl (i_sysioctl.U):
1923 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1924 indicates to the C program that <sys/bsdioctl.h> exists and should
1925 be included.
1926
1927i_db (i_db.U):
1928 This variable conditionally defines the I_DB symbol, and indicates
1929 whether a C program may include Berkeley's DB include file <db.h>.
1930
1931i_dbm (i_dbm.U):
1932 This variable conditionally defines the I_DBM symbol, which
1933 indicates to the C program that <dbm.h> exists and should
1934 be included.
1935
1936i_dirent (i_dirent.U):
1937 This variable conditionally defines I_DIRENT, which indicates
1938 to the C program that it should include <dirent.h>.
1939
1940i_dld (i_dld.U):
1941 This variable conditionally defines the I_DLD symbol, which
1942 indicates to the C program that <dld.h> (GNU dynamic loading)
1943 exists and should be included.
1944
1945i_dlfcn (i_dlfcn.U):
1946 This variable conditionally defines the I_DLFCN symbol, which
1947 indicates to the C program that <dlfcn.h> exists and should
1948 be included.
1949
1950i_fcntl (i_fcntl.U):
1951 This variable controls the value of I_FCNTL (which tells
1952 the C program to include <fcntl.h>).
1953
1954i_float (i_float.U):
1955 This variable conditionally defines the I_FLOAT symbol, and indicates
1956 whether a C program may include <float.h> to get symbols like DBL_MAX
1957 or DBL_MIN, i.e. machine dependent floating point values.
1958
1959i_gdbm (i_gdbm.U):
1960 This variable conditionally defines the I_GDBM symbol, which
1961 indicates to the C program that <gdbm.h> exists and should
1962 be included.
1963
1964i_grp (i_grp.U):
1965 This variable conditionally defines the I_GRP symbol, and indicates
1966 whether a C program should include <grp.h>.
1967
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1968i_iconv (i_iconv.U):
1969 This variable conditionally defines the I_ICONV symbol, and indicates
1970 whether a C program should include <iconv.h>.
1971
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1972i_ieeefp (i_ieeefp.U):
1973 This variable conditionally defines the I_IEEEFP symbol, and indicates
1974 whether a C program should include <ieeefp.h>.
1975
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1976i_inttypes (i_inttypes.U):
1977 This variable conditionally defines the I_INTTYPES symbol,
1978 and indicates whether a C program should include <inttypes.h>.
1979
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1980i_libutil (i_libutil.U):
1981 This variable conditionally defines the I_LIBUTIL symbol, and indicates
1982 whether a C program should include <libutil.h>.
1983
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1984i_limits (i_limits.U):
1985 This variable conditionally defines the I_LIMITS symbol, and indicates
1986 whether a C program may include <limits.h> to get symbols like WORD_BIT
1987 and friends.
1988
1989i_locale (i_locale.U):
1990 This variable conditionally defines the I_LOCALE symbol,
1991 and indicates whether a C program should include <locale.h>.
1992
1993i_machcthr (i_machcthr.U):
1994 This variable conditionally defines the I_MACH_CTHREADS symbol,
1995 and indicates whether a C program should include <mach/cthreads.h>.
1996
1997i_malloc (i_malloc.U):
1998 This variable conditionally defines the I_MALLOC symbol, and indicates
1999 whether a C program should include <malloc.h>.
2000
2001i_math (i_math.U):
2002 This variable conditionally defines the I_MATH symbol, and indicates
2003 whether a C program may include <math.h>.
2004
2005i_memory (i_memory.U):
2006 This variable conditionally defines the I_MEMORY symbol, and indicates
2007 whether a C program should include <memory.h>.
2008
2009i_mntent (i_mntent.U):
2010 This variable conditionally defines the I_MNTENT symbol, and indicates
2011 whether a C program should include <mntent.h>.
2012
2013i_ndbm (i_ndbm.U):
2014 This variable conditionally defines the I_NDBM symbol, which
2015 indicates to the C program that <ndbm.h> exists and should
2016 be included.
2017
2018i_netdb (i_netdb.U):
2019 This variable conditionally defines the I_NETDB symbol, and indicates
2020 whether a C program should include <netdb.h>.
2021
2022i_neterrno (i_neterrno.U):
2023 This variable conditionally defines the I_NET_ERRNO symbol, which
2024 indicates to the C program that <net/errno.h> exists and should
2025 be included.
2026
2027i_netinettcp (i_netinettcp.U):
2028 This variable conditionally defines the I_NETINET_TCP symbol,
2029 and indicates whether a C program should include <netinet/tcp.h>.
2030
2031i_niin (i_niin.U):
2032 This variable conditionally defines I_NETINET_IN, which indicates
2033 to the C program that it should include <netinet/in.h>. Otherwise,
2034 you may try <sys/in.h>.
2035
2036i_poll (i_poll.U):
2037 This variable conditionally defines the I_POLL symbol, and indicates
2038 whether a C program should include <poll.h>.
2039
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2040i_prot (i_prot.U):
2041 This variable conditionally defines the I_PROT symbol, and indicates
2042 whether a C program should include <prot.h>.
2043
781b178c 2044i_pthread (i_pthread.U):
190b66db 2045 This variable conditionally defines the I_PTHREAD symbol,
781b178c
JH
2046 and indicates whether a C program should include <pthread.h>.
2047
2048i_pwd (i_pwd.U):
2049 This variable conditionally defines I_PWD, which indicates
2050 to the C program that it should include <pwd.h>.
2051
2052i_rpcsvcdbm (i_dbm.U):
2053 This variable conditionally defines the I_RPCSVC_DBM symbol, which
2054 indicates to the C program that <rpcsvc/dbm.h> exists and should
2055 be included. Some System V systems might need this instead of <dbm.h>.
2056
2057i_sfio (i_sfio.U):
2058 This variable conditionally defines the I_SFIO symbol,
2059 and indicates whether a C program should include <sfio.h>.
2060
2061i_sgtty (i_termio.U):
2062 This variable conditionally defines the I_SGTTY symbol, which
2063 indicates to the C program that it should include <sgtty.h> rather
2064 than <termio.h>.
2065
2066i_shadow (i_shadow.U):
2067 This variable conditionally defines the I_SHADOW symbol, and indicates
2068 whether a C program should include <shadow.h>.
2069
2070i_socks (i_socks.U):
2071 This variable conditionally defines the I_SOCKS symbol, and indicates
2072 whether a C program should include <socks.h>.
2073
2074i_stdarg (i_varhdr.U):
2075 This variable conditionally defines the I_STDARG symbol, which
2076 indicates to the C program that <stdarg.h> exists and should
2077 be included.
2078
2079i_stddef (i_stddef.U):
2080 This variable conditionally defines the I_STDDEF symbol, which
2081 indicates to the C program that <stddef.h> exists and should
2082 be included.
2083
2084i_stdlib (i_stdlib.U):
2085 This variable conditionally defines the I_STDLIB symbol, which
2086 indicates to the C program that <stdlib.h> exists and should
2087 be included.
2088
2089i_string (i_string.U):
2090 This variable conditionally defines the I_STRING symbol, which
2091 indicates that <string.h> should be included rather than <strings.h>.
2092
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2093i_sunmath (i_sunmath.U):
2094 This variable conditionally defines the I_SUNMATH symbol, and indicates
2095 whether a C program should include <sunmath.h>.
2096
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2097i_sysaccess (i_sysaccess.U):
2098 This variable conditionally defines the I_SYS_ACCESS symbol,
2099 and indicates whether a C program should include <sys/access.h>.
2100
2101i_sysdir (i_sysdir.U):
2102 This variable conditionally defines the I_SYS_DIR symbol, and indicates
2103 whether a C program should include <sys/dir.h>.
2104
2105i_sysfile (i_sysfile.U):
2106 This variable conditionally defines the I_SYS_FILE symbol, and indicates
2107 whether a C program should include <sys/file.h> to get R_OK and friends.
2108
2109i_sysfilio (i_sysioctl.U):
2110 This variable conditionally defines the I_SYS_FILIO symbol, which
2111 indicates to the C program that <sys/filio.h> exists and should
2112 be included in preference to <sys/ioctl.h>.
2113
2114i_sysin (i_niin.U):
2115 This variable conditionally defines I_SYS_IN, which indicates
2116 to the C program that it should include <sys/in.h> instead of
2117 <netinet/in.h>.
2118
2119i_sysioctl (i_sysioctl.U):
2120 This variable conditionally defines the I_SYS_IOCTL symbol, which
2121 indicates to the C program that <sys/ioctl.h> exists and should
2122 be included.
2123
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2124i_syslog (i_syslog.U):
2125 This variable conditionally defines the I_SYSLOG symbol,
2126 and indicates whether a C program should include <syslog.h>.
2127
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2128i_sysmman (i_sysmman.U):
2129 This variable conditionally defines the I_SYS_MMAN symbol, and
2130 indicates whether a C program should include <sys/mman.h>.
2131
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2132i_sysmode (i_sysmode.U):
2133 This variable conditionally defines the I_SYSMODE symbol,
2134 and indicates whether a C program should include <sys/mode.h>.
2135
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2136i_sysmount (i_sysmount.U):
2137 This variable conditionally defines the I_SYSMOUNT symbol,
2138 and indicates whether a C program should include <sys/mount.h>.
2139
2140i_sysndir (i_sysndir.U):
2141 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
2142 whether a C program should include <sys/ndir.h>.
2143
2144i_sysparam (i_sysparam.U):
2145 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
2146 whether a C program should include <sys/param.h>.
2147
2148i_sysresrc (i_sysresrc.U):
2149 This variable conditionally defines the I_SYS_RESOURCE symbol,
2150 and indicates whether a C program should include <sys/resource.h>.
2151
2152i_syssecrt (i_syssecrt.U):
2153 This variable conditionally defines the I_SYS_SECURITY symbol,
2154 and indicates whether a C program should include <sys/security.h>.
2155
2156i_sysselct (i_sysselct.U):
2157 This variable conditionally defines I_SYS_SELECT, which indicates
2158 to the C program that it should include <sys/select.h> in order to
2159 get the definition of struct timeval.
2160
2161i_syssockio (i_sysioctl.U):
2162 This variable conditionally defines I_SYS_SOCKIO to indicate to the
2163 C program that socket ioctl codes may be found in <sys/sockio.h>
2164 instead of <sys/ioctl.h>.
2165
2166i_sysstat (i_sysstat.U):
2167 This variable conditionally defines the I_SYS_STAT symbol,
2168 and indicates whether a C program should include <sys/stat.h>.
2169
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2170i_sysstatfs (i_sysstatfs.U):
2171 This variable conditionally defines the I_SYSSTATFS symbol,
2172 and indicates whether a C program should include <sys/statfs.h>.
2173
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2174i_sysstatvfs (i_sysstatvfs.U):
2175 This variable conditionally defines the I_SYSSTATVFS symbol,
2176 and indicates whether a C program should include <sys/statvfs.h>.
2177
2178i_systime (i_time.U):
2179 This variable conditionally defines I_SYS_TIME, which indicates
2180 to the C program that it should include <sys/time.h>.
2181
2182i_systimek (i_time.U):
2183 This variable conditionally defines I_SYS_TIME_KERNEL, which
2184 indicates to the C program that it should include <sys/time.h>
2185 with KERNEL defined.
2186
2187i_systimes (i_systimes.U):
2188 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
2189 whether a C program should include <sys/times.h>.
2190
2191i_systypes (i_systypes.U):
2192 This variable conditionally defines the I_SYS_TYPES symbol,
2193 and indicates whether a C program should include <sys/types.h>.
2194
2195i_sysuio (i_sysuio.U):
2196 This variable conditionally defines the I_SYSUIO symbol, and indicates
2197 whether a C program should include <sys/uio.h>.
2198
2199i_sysun (i_sysun.U):
2200 This variable conditionally defines I_SYS_UN, which indicates
2201 to the C program that it should include <sys/un.h> to get UNIX
2202 domain socket definitions.
2203
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2204i_sysutsname (i_sysutsname.U):
2205 This variable conditionally defines the I_SYSUTSNAME symbol,
2206 and indicates whether a C program should include <sys/utsname.h>.
2207
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2208i_sysvfs (i_sysvfs.U):
2209 This variable conditionally defines the I_SYSVFS symbol,
2210 and indicates whether a C program should include <sys/vfs.h>.
2211
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2212i_syswait (i_syswait.U):
2213 This variable conditionally defines I_SYS_WAIT, which indicates
2214 to the C program that it should include <sys/wait.h>.
2215
2216i_termio (i_termio.U):
2217 This variable conditionally defines the I_TERMIO symbol, which
2218 indicates to the C program that it should include <termio.h> rather
2219 than <sgtty.h>.
2220
2221i_termios (i_termio.U):
2222 This variable conditionally defines the I_TERMIOS symbol, which
2223 indicates to the C program that the POSIX <termios.h> file is
2224 to be included.
2225
2226i_time (i_time.U):
2227 This variable conditionally defines I_TIME, which indicates
2228 to the C program that it should include <time.h>.
2229
2230i_unistd (i_unistd.U):
2231 This variable conditionally defines the I_UNISTD symbol, and indicates
2232 whether a C program should include <unistd.h>.
2233
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2234i_ustat (i_ustat.U):
2235 This variable conditionally defines the I_USTAT symbol, and indicates
2236 whether a C program should include <ustat.h>.
2237
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2238i_utime (i_utime.U):
2239 This variable conditionally defines the I_UTIME symbol, and indicates
2240 whether a C program should include <utime.h>.
2241
2242i_values (i_values.U):
2243 This variable conditionally defines the I_VALUES symbol, and indicates
2244 whether a C program may include <values.h> to get symbols like MAXLONG
2245 and friends.
2246
2247i_varargs (i_varhdr.U):
2248 This variable conditionally defines I_VARARGS, which indicates
2249 to the C program that it should include <varargs.h>.
2250
2251i_varhdr (i_varhdr.U):
2252 Contains the name of the header to be included to get va_dcl definition.
2253 Typically one of varargs.h or stdarg.h.
2254
2255i_vfork (i_vfork.U):
2256 This variable conditionally defines the I_VFORK symbol, and indicates
2257 whether a C program should include vfork.h.
2258
2259ignore_versioned_solibs (libs.U):
2260 This variable should be non-empty if non-versioned shared
2261 libraries (libfoo.so.x.y) are to be ignored (because they
2262 cannot be linked against).
2263
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2264inc_version_list (inc_version_list.U):
2265 This variable specifies the list of subdirectories in over
2266 which perl.c:incpush() and lib/lib.pm will automatically
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2267 search when adding directories to @INC. The elements in
2268 the list are separated by spaces. This is only useful
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2269 if you have a perl library directory tree structured like the
2270 default one. See INSTALL for how this works. The versioned
2271 site_perl directory was introduced in 5.005, so that is the
2272 lowest possible value.
2273
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2274inc_version_list_init (inc_version_list.U):
2275 This variable holds the same list as inc_version_list, but
2276 each item is enclosed in double quotes and separated by commas,
2277 suitable for use in the PERL_INC_VERSION_LIST initialization.
2278
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2279incpath (usrinc.U):
2280 This variable must preceed the normal include path to get hte
2281 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
2282 Value can be "" or "/bsd43" on mips.
2283
2284inews (Loc.U):
2285 This variable is defined but not used by Configure.
2286 The value is a plain '' and is not useful.
2287
2288installarchlib (archlib.U):
2289 This variable is really the same as archlibexp but may differ on
2290 those systems using AFS. For extra portability, only this variable
2291 should be used in makefiles.
2292
2293installbin (bin.U):
2294 This variable is the same as binexp unless AFS is running in which case
2295 the user is explicitely prompted for it. This variable should always
2296 be used in your makefiles for maximum portability.
2297
2298installman1dir (man1dir.U):
2299 This variable is really the same as man1direxp, unless you are using
2300 AFS in which case it points to the read/write location whereas
2301 man1direxp only points to the read-only access location. For extra
2302 portability, you should only use this variable within your makefiles.
2303
2304installman3dir (man3dir.U):
2305 This variable is really the same as man3direxp, unless you are using
2306 AFS in which case it points to the read/write location whereas
2307 man3direxp only points to the read-only access location. For extra
2308 portability, you should only use this variable within your makefiles.
2309
2310installprefix (installprefix.U):
2311 This variable holds the name of the directory below which
2312 "make install" will install the package. For most users, this
2313 is the same as prefix. However, it is useful for
2314 installing the software into a different (usually temporary)
2315 location after which it can be bundled up and moved somehow
2316 to the final location specified by prefix.
2317
2318installprefixexp (installprefix.U):
2319 This variable holds the full absolute path of installprefix
2320 with all ~-expansion done.
2321
2322installprivlib (privlib.U):
2323 This variable is really the same as privlibexp but may differ on
2324 those systems using AFS. For extra portability, only this variable
2325 should be used in makefiles.
2326
2327installscript (scriptdir.U):
2328 This variable is usually the same as scriptdirexp, unless you are on
2329 a system running AFS, in which case they may differ slightly. You
2330 should always use this variable within your makefiles for portability.
2331
2332installsitearch (sitearch.U):
2333 This variable is really the same as sitearchexp but may differ on
2334 those systems using AFS. For extra portability, only this variable
2335 should be used in makefiles.
2336
0617aed7
JH
2337installsitebin (sitebin.U):
2338 This variable is usually the same as sitebinexp, unless you are on
2339 a system running AFS, in which case they may differ slightly. You
2340 should always use this variable within your makefiles for portability.
2341
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2342installsitelib (sitelib.U):
2343 This variable is really the same as sitelibexp but may differ on
2344 those systems using AFS. For extra portability, only this variable
2345 should be used in makefiles.
2346
2347installstyle (installstyle.U):
2348 This variable describes the "style" of the perl installation.
2349 This is intended to be useful for tools that need to
2350 manipulate entire perl distributions. Perl itself doesn't use
2351 this to find its libraries -- the library directories are
2352 stored directly in Config.pm. Currently, there are only two
2353 styles: "lib" and "lib/perl5". The default library locations
2354 (e.g. privlib, sitelib) are either $prefix/lib or
2355 $prefix/lib/perl5. The former is useful if $prefix is a
2356 directory dedicated to perl (e.g. /opt/perl), while the latter
2357 is useful if $prefix is shared by many packages, e.g. if
2358 $prefix=/usr/local.
2359 This may later be extended to include other information, so
2360 be careful with pattern-matching on the results.
2361 For compatibility with perl5.005 and earlier, the default
2362 setting is based on whether or not $prefix contains the string
2363 "perl".
2364
2365installusrbinperl (instubperl.U):
2366 This variable tells whether Perl should be installed also as
2367 /usr/bin/perl in addition to
2368 $installbin/perl
2369
526fdc24
MS
2370installvendorarch (vendorarch.U):
2371 This variable is really the same as vendorarchexp but may differ on
2372 those systems using AFS. For extra portability, only this variable
2373 should be used in makefiles.
2374
0617aed7
JH
2375installvendorbin (vendorbin.U):
2376 This variable is really the same as vendorbinexp but may differ on
2377 those systems using AFS. For extra portability, only this variable
2378 should be used in makefiles.
2379
a3635516
JH
2380installvendorlib (vendorlib.U):
2381 This variable is really the same as vendorlibexp but may differ on
2382 those systems using AFS. For extra portability, only this variable
2383 should be used in makefiles.
2384
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2385intsize (intsize.U):
2386 This variable contains the value of the INTSIZE symbol, which
2387 indicates to the C program how many bytes there are in an int.
2388
a22e52b9
JH
2389ivdformat (perlxvf.U):
2390 This variable contains the format string used for printing
2391 a Perl IV as a signed decimal integer.
2392
2393ivsize (perlxv.U):
2394 This variable is the size of an IV in bytes.
2395
2396ivtype (perlxv.U):
2397 This variable contains the C type used for Perl's IV.
2398
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JH
2399known_extensions (Extensions.U):
2400 This variable holds a list of all XS extensions included in
2401 the package.
2402
2403ksh (Loc.U):
2404 This variable is defined but not used by Configure.
2405 The value is a plain '' and is not useful.
2406
2407large (models.U):
2408 This variable contains a flag which will tell the C compiler and loader
2409 to produce a program running with a large memory model. It is up to
2410 the Makefile to use this.
2411
2412ld (dlsrc.U):
2413 This variable indicates the program to be used to link
2414 libraries for dynamic loading. On some systems, it is 'ld'.
2415 On ELF systems, it should be $cc. Mostly, we'll try to respect
2416 the hint file setting.
2417
2418lddlflags (dlsrc.U):
2419 This variable contains any special flags that might need to be
2420 passed to $ld to create a shared library suitable for dynamic
2421 loading. It is up to the makefile to use it. For hpux, it
2422 should be '-b'. For sunos 4.1, it is empty.
2423
2424ldflags (ccflags.U):
2425 This variable contains any additional C loader flags desired by
2426 the user. It is up to the Makefile to use this.
2427
af960fef
JH
2428ldflags_uselargefiles (uselfs.U):
2429 This variable contains the loader flags needed by large file builds
2430 and added to ldflags by hints files.
2431
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JH
2432ldlibpthname (libperl.U):
2433 This variable holds the name of the shared library
2434 search path, often LD_LIBRARY_PATH. To get an empty
2435 string, the hints file must set this to 'none'.
2436
2437less (Loc.U):
5bf26616 2438 This variable is used internally by Configure to determine the
781b178c
JH
2439 full pathname (if any) of the less program. After Configure runs,
2440 the value is reset to a plain "less" and is not useful.
2441
2442lib_ext (Unix.U):
2443 This is an old synonym for _a.
2444
2445libc (libc.U):
2446 This variable contains the location of the C library.
2447
2448libperl (libperl.U):
2449 The perl executable is obtained by linking perlmain.c with
2450 libperl, any static extensions (usually just DynaLoader),
2451 and any other libraries needed on this system. libperl
2452 is usually libperl.a, but can also be libperl.so.xxx if
2453 the user wishes to build a perl executable with a shared
2454 library.
2455
2456libpth (libpth.U):
2457 This variable holds the general path (space-separated) used to find
2458 libraries. It is intended to be used by other units.
2459
2460libs (libs.U):
2461 This variable holds the additional libraries we want to use.
2462 It is up to the Makefile to deal with it.
2463
fe749a9f
JH
2464libsdirs (libs.U):
2465 This variable holds the directory names aka dirnames of the libraries
2466 we found and accepted, duplicates are removed.
2467
2468libsfiles (libs.U):
2469 This variable holds the filenames aka basenames of the libraries
2470 we found and accepted.
2471
2472libsfound (libs.U):
2473 This variable holds the full pathnames of the libraries
2474 we found and accepted.
2475
13b3f787
JH
2476libspath (libs.U):
2477 This variable holds the directory names probed for libraries.
2478
781b178c
JH
2479libswanted (Myinit.U):
2480 This variable holds a list of all the libraries we want to
2481 search. The order is chosen to pick up the c library
2482 ahead of ucb or bsd libraries for SVR4.
2483
af960fef
JH
2484libswanted_uselargefiles (uselfs.U):
2485 This variable contains the libraries needed by large file builds
2486 and added to ldflags by hints files. It is a space separated list
2487 of the library names without the "lib" prefix or any suffix, just
2488 like libswanted..
2489
781b178c 2490line (Loc.U):
ff935051
JH
2491 This variable is defined but not used by Configure.
2492 The value is a plain '' and is not useful.
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JH
2493
2494lint (Loc.U):
2495 This variable is defined but not used by Configure.
2496 The value is a plain '' and is not useful.
2497
2498lkflags (ccflags.U):
2499 This variable contains any additional C partial linker flags desired by
2500 the user. It is up to the Makefile to use this.
2501
2502ln (Loc.U):
5bf26616 2503 This variable is used internally by Configure to determine the
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2504 full pathname (if any) of the ln program. After Configure runs,
2505 the value is reset to a plain "ln" and is not useful.
2506
2507lns (lns.U):
2508 This variable holds the name of the command to make
2509 symbolic links (if they are supported). It can be used
2510 in the Makefile. It is either 'ln -s' or 'ln'
2511
2512locincpth (ccflags.U):
2513 This variable contains a list of additional directories to be
2514 searched by the compiler. The appropriate '-I' directives will
2515 be added to ccflags. This is intended to simplify setting
2516 local directories from the Configure command line.
2517 It's not much, but it parallels the loclibpth stuff in libpth.U.
2518
2519loclibpth (libpth.U):
2520 This variable holds the paths (space-separated) used to find local
2521 libraries. It is prepended to libpth, and is intended to be easily
2522 set from the command line.
2523
2524longdblsize (d_longdbl.U):
2525 This variable contains the value of the LONG_DOUBLESIZE symbol, which
2526 indicates to the C program how many bytes there are in a long double,
2527 if this system supports long doubles.
2528
2529longlongsize (d_longlong.U):
2530 This variable contains the value of the LONGLONGSIZE symbol, which
2531 indicates to the C program how many bytes there are in a long long,
2532 if this system supports long long.
2533
2534longsize (intsize.U):
2535 This variable contains the value of the LONGSIZE symbol, which
2536 indicates to the C program how many bytes there are in a long.
2537
2538lp (Loc.U):
2539 This variable is defined but not used by Configure.
2540 The value is a plain '' and is not useful.
2541
2542lpr (Loc.U):
2543 This variable is defined but not used by Configure.
2544 The value is a plain '' and is not useful.
2545
2546ls (Loc.U):
5bf26616 2547 This variable is used internally by Configure to determine the
781b178c
JH
2548 full pathname (if any) of the ls program. After Configure runs,
2549 the value is reset to a plain "ls" and is not useful.
2550
2551lseeksize (lseektype.U):
2552 This variable defines lseektype to be something like off_t, long,
2553 or whatever type is used to declare lseek offset's type in the
2554 kernel (which also appears to be lseek's return type).
2555
2556lseektype (lseektype.U):
2557 This variable defines lseektype to be something like off_t, long,
2558 or whatever type is used to declare lseek offset's type in the
2559 kernel (which also appears to be lseek's return type).
2560
2561mail (Loc.U):
2562 This variable is defined but not used by Configure.
2563 The value is a plain '' and is not useful.
2564
2565mailx (Loc.U):
2566 This variable is defined but not used by Configure.
2567 The value is a plain '' and is not useful.
2568
2569make (Loc.U):
5bf26616 2570 This variable is used internally by Configure to determine the
781b178c
JH
2571 full pathname (if any) of the make program. After Configure runs,
2572 the value is reset to a plain "make" and is not useful.
2573
2574make_set_make (make.U):
2575 Some versions of 'make' set the variable MAKE. Others do not.
2576 This variable contains the string to be included in Makefile.SH
2577 so that MAKE is set if needed, and not if not needed.
2578 Possible values are:
2579 make_set_make='#' # If your make program handles this for you,
2580 make_set_make="MAKE=$make" # if it doesn't.
2581 I used a comment character so that we can distinguish a
2582 'set' value (from a previous config.sh or Configure '-D' option)
2583 from an uncomputed value.
2584
2585mallocobj (mallocsrc.U):
2586 This variable contains the name of the malloc.o that this package
2587 generates, if that malloc.o is preferred over the system malloc.
2588 Otherwise the value is null. This variable is intended for generating
2589 Makefiles. See mallocsrc.
2590
2591mallocsrc (mallocsrc.U):
2592 This variable contains the name of the malloc.c that comes with
2593 the package, if that malloc.c is preferred over the system malloc.
2594 Otherwise the value is null. This variable is intended for generating
2595 Makefiles.
2596
2597malloctype (mallocsrc.U):
2598 This variable contains the kind of ptr returned by malloc and realloc.
2599
2600man1dir (man1dir.U):
2601 This variable contains the name of the directory in which manual
2602 source pages are to be put. It is the responsibility of the
2603 Makefile.SH to get the value of this into the proper command.
2604 You must be prepared to do the ~name expansion yourself.
2605
2606man1direxp (man1dir.U):
2607 This variable is the same as the man1dir variable, but is filename
2608 expanded at configuration time, for convenient use in makefiles.
2609
2610man1ext (man1dir.U):
2611 This variable contains the extension that the manual page should
2612 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
2613 See man1dir.
2614
2615man3dir (man3dir.U):
2616 This variable contains the name of the directory in which manual
2617 source pages are to be put. It is the responsibility of the
2618 Makefile.SH to get the value of this into the proper command.
2619 You must be prepared to do the ~name expansion yourself.
2620
2621man3direxp (man3dir.U):
2622 This variable is the same as the man3dir variable, but is filename
2623 expanded at configuration time, for convenient use in makefiles.
2624
2625man3ext (man3dir.U):
2626 This variable contains the extension that the manual page should
2627 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
2628 See man3dir.
2629
ff935051
JH
2630Mcc (Loc.U):
2631 This variable is used internally by Configure to determine the
2632 full pathname (if any) of the Mcc program. After Configure runs,
2633 the value is reset to a plain "Mcc" and is not useful.
2634
781b178c
JH
2635medium (models.U):
2636 This variable contains a flag which will tell the C compiler and loader
2637 to produce a program running with a medium memory model. If the
2638 medium model is not supported, contains the flag to produce large
2639 model programs. It is up to the Makefile to use this.
2640
2641mips_type (usrinc.U):
2642 This variable holds the environment type for the mips system.
2643 Possible values are "BSD 4.3" and "System V".
2644
2645mkdir (Loc.U):
5bf26616 2646 This variable is used internally by Configure to determine the
781b178c
JH
2647 full pathname (if any) of the mkdir program. After Configure runs,
2648 the value is reset to a plain "mkdir" and is not useful.
2649
fe749a9f
JH
2650mmaptype (d_mmap.U):
2651 This symbol contains the type of pointer returned by mmap()
2652 (and simultaneously the type of the first argument).
2653 It can be 'void *' or 'caddr_t'.
2654
781b178c
JH
2655models (models.U):
2656 This variable contains the list of memory models supported by this
2657 system. Possible component values are none, split, unsplit, small,
2658 medium, large, and huge. The component values are space separated.
2659
2660modetype (modetype.U):
2661 This variable defines modetype to be something like mode_t,
2662 int, unsigned short, or whatever type is used to declare file
2663 modes for system calls.
2664
2665more (Loc.U):
5bf26616 2666 This variable is used internally by Configure to determine the
781b178c
JH
2667 full pathname (if any) of the more program. After Configure runs,
2668 the value is reset to a plain "more" and is not useful.
2669
2670multiarch (multiarch.U):
2671 This variable conditionally defines the MULTIARCH symbol
2672 which signifies the presence of multiplatform files.
2673 This is normally set by hints files.
2674
2675mv (Loc.U):
2676 This variable is defined but not used by Configure.
2677 The value is a plain '' and is not useful.
2678
2679myarchname (archname.U):
2680 This variable holds the architecture name computed by Configure in
2681 a previous run. It is not intended to be perused by any user and
2682 should never be set in a hint file.
2683
2684mydomain (myhostname.U):
2685 This variable contains the eventual value of the MYDOMAIN symbol,
2686 which is the domain of the host the program is going to run on.
2687 The domain must be appended to myhostname to form a complete host name.
2688 The dot comes with mydomain, and need not be supplied by the program.
2689
2690myhostname (myhostname.U):
2691 This variable contains the eventual value of the MYHOSTNAME symbol,
2692 which is the name of the host the program is going to run on.
2693 The domain is not kept with hostname, but must be gotten from mydomain.
2694 The dot comes with mydomain, and need not be supplied by the program.
2695
2696myuname (Oldconfig.U):
2697 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
2698 pseudo variables assignments in the output are stripped, thank you. The
2699 whole thing is then lower-cased.
2700
2701n (n.U):
2702 This variable contains the '-n' flag if that is what causes the echo
2703 command to suppress newline. Otherwise it is null. Correct usage is
2704 $echo $n "prompt for a question: $c".
2705
2706netdb_hlen_type (netdbtype.U):
2707 This variable holds the type used for the 2nd argument to
2708 gethostbyaddr(). Usually, this is int or size_t or unsigned.
2709 This is only useful if you have gethostbyaddr(), naturally.
2710
2711netdb_host_type (netdbtype.U):
2712 This variable holds the type used for the 1st argument to
2713 gethostbyaddr(). Usually, this is char * or void *, possibly
2714 with or without a const prefix.
2715 This is only useful if you have gethostbyaddr(), naturally.
2716
2717netdb_name_type (netdbtype.U):
2718 This variable holds the type used for the argument to
2719 gethostbyname(). Usually, this is char * or const char *.
2720 This is only useful if you have gethostbyname(), naturally.
2721
2722netdb_net_type (netdbtype.U):
2723 This variable holds the type used for the 1st argument to
2724 getnetbyaddr(). Usually, this is int or long.
2725 This is only useful if you have getnetbyaddr(), naturally.
2726
2727nm (Loc.U):
5bf26616 2728 This variable is used internally by Configure to determine the
781b178c
JH
2729 full pathname (if any) of the nm program. After Configure runs,
2730 the value is reset to a plain "nm" and is not useful.
2731
2732nm_opt (usenm.U):
2733 This variable holds the options that may be necessary for nm.
2734
2735nm_so_opt (usenm.U):
2736 This variable holds the options that may be necessary for nm
2737 to work on a shared library but that can not be used on an
2738 archive library. Currently, this is only used by Linux, where
2739 nm --dynamic is *required* to get symbols from an ELF library which
2740 has been stripped, but nm --dynamic is *fatal* on an archive library.
2741 Maybe Linux should just always set usenm=false.
2742
2743nonxs_ext (Extensions.U):
2744 This variable holds a list of all non-xs extensions included
2745 in the package. All of them will be built.
2746
2747nroff (Loc.U):
5bf26616 2748 This variable is used internally by Configure to determine the
781b178c
JH
2749 full pathname (if any) of the nroff program. After Configure runs,
2750 the value is reset to a plain "nroff" and is not useful.
2751
6b4667fc
A
2752nveformat (perlxvf.U):
2753 This variable contains the format string used for printing
2754 a Perl NV using %e-ish floating point format.
2755
2756nvEformat (perlxvf.U):
2757 This variable contains the format string used for printing
2758 a Perl NV using %E-ish floating point format.
2759
2760nvfformat (perlxvf.U):
2761 This variable confains the format string used for printing
2762 a Perl NV using %f-ish floating point format.
2763
2764nvFformat (perlxvf.U):
2765 This variable confains the format string used for printing
2766 a Perl NV using %F-ish floating point format.
2767
2768nvgformat (perlxvf.U):
2769 This variable contains the format string used for printing
2770 a Perl NV using %g-ish floating point format.
2771
2772nvGformat (perlxvf.U):
2773 This variable contains the format string used for printing
2774 a Perl NV using %G-ish floating point format.
2775
a22e52b9
JH
2776nvsize (perlxv.U):
2777 This variable is the size of an NV in bytes.
2778
2779nvtype (perlxv.U):
2780 This variable contains the C type used for Perl's NV.
2781
781b178c
JH
2782o_nonblock (nblock_io.U):
2783 This variable bears the symbol value to be used during open() or fcntl()
2784 to turn on non-blocking I/O for a file descriptor. If you wish to switch
2785 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
2786 but that is only supported by some devices.
2787
2788obj_ext (Unix.U):
2789 This is an old synonym for _o.
2790
2791old_pthread_create_joinable (d_pthrattrj.U):
2792 This variable defines the constant to use for creating joinable
2793 (aka undetached) pthreads. Unused if pthread.h defines
2794 PTHREAD_CREATE_JOINABLE. If used, possible values are
2795 PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
2796
2797optimize (ccflags.U):
2798 This variable contains any optimizer/debugger flag that should be used.
2799 It is up to the Makefile to use it.
2800
2801orderlib (orderlib.U):
2802 This variable is "true" if the components of libraries must be ordered
2803 (with `lorder $* | tsort`) before placing them in an archive. Set to
2804 "false" if ranlib or ar can generate random libraries.
2805
2806osname (Oldconfig.U):
2807 This variable contains the operating system name (e.g. sunos,
2808 solaris, hpux, etc.). It can be useful later on for setting
2809 defaults. Any spaces are replaced with underscores. It is set
2810 to a null string if we can't figure it out.
2811
2812osvers (Oldconfig.U):
2813 This variable contains the operating system version (e.g.
2814 4.1.3, 5.2, etc.). It is primarily used for helping select
2815 an appropriate hints file, but might be useful elsewhere for
2816 setting defaults. It is set to '' if we can't figure it out.
2817 We try to be flexible about how much of the version number
2818 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
2819 same for this package, hints files might just be os_4.0 or
2820 os_4.1, etc., not keeping separate files for each little release.
2821
3b777bb4
GS
2822otherlibdirs (otherlibdirs.U):
2823 This variable contains a colon-separated set of paths for the perl
2824 binary to search for additional library files or modules.
2825 These directories will be tacked to the end of @INC.
2826 Perl will automatically search below each path for version-
2827 and architecture-specific directories. See inc_version_list
2828 for more details.
2829 A value of ' ' means 'none' and is used to preserve this value
2830 for the next run through Configure.
2831
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JH
2832package (package.U):
2833 This variable contains the name of the package being constructed.
2834 It is primarily intended for the use of later Configure units.
2835
2836pager (pager.U):
2837 This variable contains the name of the preferred pager on the system.
2838 Usual values are (the full pathnames of) more, less, pg, or cat.
2839
2840passcat (nis.U):
2841 This variable contains a command that produces the text of the
2842 /etc/passwd file. This is normally "cat /etc/passwd", but can be
2843 "ypcat passwd" when NIS is used.
aaacdc8b
GS
2844 On some systems, such as os390, there may be no equivalent
2845 command, in which case this variable is unset.
781b178c
JH
2846
2847patchlevel (patchlevel.U):
2848 The patchlevel level of this package.
2849 The value of patchlevel comes from the patchlevel.h file.
ff935051 2850 In a version number such as 5.6.1, this is the "6".
c890dc6c 2851 In patchlevel.h, this is referred to as "PERL_VERSION".
781b178c
JH
2852
2853path_sep (Unix.U):
2854 This is an old synonym for p_ in Head.U, the character
2855 used to separate elements in the command shell search PATH.
2856
c890dc6c
JH
2857perl5 (perl5.U):
2858 This variable contains the full path (if any) to a previously
2859 installed perl5.005 or later suitable for running the script
2860 to determine inc_version_list.
2861
781b178c 2862perl (Loc.U):
c890dc6c
JH
2863 This variable is defined but not used by Configure.
2864 The value is a plain '' and is not useful.
781b178c 2865
ff935051
JH
2866PERL_REVISION (Oldsyms.U):
2867 In a Perl version number such as 5.6.2, this is the 5.
2868 This value is manually set in patchlevel.h
2869
2870PERL_SUBVERSION (Oldsyms.U):
2871 In a Perl version number such as 5.6.2, this is the 2.
2872 Values greater than 50 represent potentially unstable
2873 development subversions.
2874 This value is manually set in patchlevel.h
2875
2876PERL_VERSION (Oldsyms.U):
2877 In a Perl version number such as 5.6.2, this is the 6.
2878 This value is manually set in patchlevel.h
2879
781b178c
JH
2880perladmin (perladmin.U):
2881 Electronic mail address of the perl5 administrator.
2882
2883perlpath (perlpath.U):
2884 This variable contains the eventual value of the PERLPATH symbol,
2885 which contains the name of the perl interpreter to be used in
2886 shell scripts and in the "eval 'exec'" idiom.
2887
2888pg (Loc.U):
5bf26616 2889 This variable is used internally by Configure to determine the
781b178c
JH
2890 full pathname (if any) of the pg program. After Configure runs,
2891 the value is reset to a plain "pg" and is not useful.
2892
2893phostname (myhostname.U):
2894 This variable contains the eventual value of the PHOSTNAME symbol,
2895 which is a command that can be fed to popen() to get the host name.
2896 The program should probably not presume that the domain is or isn't
2897 there already.
2898
2899pidtype (pidtype.U):
2900 This variable defines PIDTYPE to be something like pid_t, int,
2901 ushort, or whatever type is used to declare process ids in the kernel.
2902
2903plibpth (libpth.U):
2904 Holds the private path used by Configure to find out the libraries.
2905 Its value is prepend to libpth. This variable takes care of special
2906 machines, like the mips. Usually, it should be empty.
2907
fe749a9f
JH
2908pm_apiversion (xs_apiversion.U):
2909 This variable contains the version of the oldest perl
2910 compatible with the present perl. (That is, pure perl modules
2911 written for $pm_apiversion will still work for the current
2912 version). perl.c:incpush() and lib/lib.pm will automatically
2913 search in $sitelib for older directories across major versions
2914 back to pm_apiversion. This is only useful if you have a perl
2915 library directory tree structured like the default one. The
2916 versioned site_perl library was introduced in 5.005, so that's
2917 the default setting for this variable. It's hard to imagine
2918 it changing before Perl6. It is included here for symmetry
2919 with xs_apiveprsion -- the searching algorithms will
2920 (presumably) be similar.
2921 See the INSTALL file for how this works.
2922
781b178c
JH
2923pmake (Loc.U):
2924 This variable is defined but not used by Configure.
2925 The value is a plain '' and is not useful.
2926
2927pr (Loc.U):
2928 This variable is defined but not used by Configure.
2929 The value is a plain '' and is not useful.
2930
2931prefix (prefix.U):
2932 This variable holds the name of the directory below which the
2933 user will install the package. Usually, this is /usr/local, and
2934 executables go in /usr/local/bin, library stuff in /usr/local/lib,
2935 man pages in /usr/local/man, etc. It is only used to set defaults
2936 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
2937
2938prefixexp (prefix.U):
2939 This variable holds the full absolute path of the directory below
2940 which the user will install the package. Derived from prefix.
2941
2942privlib (privlib.U):
2943 This variable contains the eventual value of the PRIVLIB symbol,
2944 which is the name of the private library for this package. It may
2945 have a ~ on the front. It is up to the makefile to eventually create
2946 this directory while performing installation (with ~ substitution).
2947
2948privlibexp (privlib.U):
2949 This variable is the ~name expanded version of privlib, so that you
2950 may use it directly in Makefiles or shell scripts.
2951
2952prototype (prototype.U):
2953 This variable holds the eventual value of CAN_PROTOTYPE, which
2954 indicates the C compiler can handle funciton prototypes.
2955
2956ptrsize (ptrsize.U):
2957 This variable contains the value of the PTRSIZE symbol, which
2958 indicates to the C program how many bytes there are in a pointer.
2959
e0a10278 2960quadkind (quadtype.U):
0befd8de
JH
2961 This variable, if defined, encodes the type of a quad:
2962 1 = int, 2 = long, 3 = long long, 4 = int64_t.
2963
2964quadtype (quadtype.U):
2965 This variable defines Quad_t to be something like long, int,
2966 long long, int64_t, or whatever type is used for 64-bit integers.
2967
781b178c
JH
2968randbits (randfunc.U):
2969 Indicates how many bits are produced by the function used to
2970 generate normalized random numbers.
2971
2972randfunc (randfunc.U):
2973 Indicates the name of the random number function to use.
2974 Values include drand48, random, and rand. In C programs,
2975 the 'Drand01' macro is defined to generate uniformly distributed
2976 random numbers over the range [0., 1.[ (see drand01 and nrand).
2977
2978randseedtype (randfunc.U):
2979 Indicates the type of the argument of the seedfunc.
2980
2981ranlib (orderlib.U):
2982 This variable is set to the pathname of the ranlib program, if it is
2983 needed to generate random libraries. Set to ":" if ar can generate
2984 random libraries or if random libraries are not supported
2985
2986rd_nodata (nblock_io.U):
2987 This variable holds the return code from read() when no data is
2988 present. It should be -1, but some systems return 0 when O_NDELAY is
2989 used, which is a shame because you cannot make the difference between
2990 no data and an EOF.. Sigh!
2991
c890dc6c
JH
2992revision (patchlevel.U):
2993 The value of revision comes from the patchlevel.h file.
2994 In a version number such as 5.6.1, this is the "5".
2995 In patchlevel.h, this is referred to as "PERL_REVISION".
2996
781b178c 2997rm (Loc.U):
5bf26616 2998 This variable is used internally by Configure to determine the
781b178c
JH
2999 full pathname (if any) of the rm program. After Configure runs,
3000 the value is reset to a plain "rm" and is not useful.
3001
3002rmail (Loc.U):
3003 This variable is defined but not used by Configure.
3004 The value is a plain '' and is not useful.
3005
3006runnm (usenm.U):
3007 This variable contains 'true' or 'false' depending whether the
3008 nm extraction should be performed or not, according to the value
3009 of usenm and the flags on the Configure command line.
3010
3011sched_yield (d_pthread_y.U):
3012 This variable defines the way to yield the execution
3013 of the current thread.
3014
3015scriptdir (scriptdir.U):
3016 This variable holds the name of the directory in which the user wants
3017 to put publicly scripts for the package in question. It is either
3018 the same directory as for binaries, or a special one that can be
3019 mounted across different architectures, like /usr/share. Programs
3020 must be prepared to deal with ~name expansion.
3021
3022scriptdirexp (scriptdir.U):
3023 This variable is the same as scriptdir, but is filename expanded
3024 at configuration time, for programs not wanting to bother with it.
3025
3026sed (Loc.U):
5bf26616 3027 This variable is used internally by Configure to determine the
781b178c
JH
3028 full pathname (if any) of the sed program. After Configure runs,
3029 the value is reset to a plain "sed" and is not useful.
3030
3031seedfunc (randfunc.U):
3032 Indicates the random number generating seed function.
3033 Values include srand48, srandom, and srand.
3034
3035selectminbits (selectminbits.U):
3036 This variable holds the minimum number of bits operated by select.
3037 That is, if you do select(n, ...), how many bits at least will be
3038 cleared in the masks if some activity is detected. Usually this
3039 is either n or 32*ceil(n/32), especially many little-endians do
3040 the latter. This is only useful if you have select(), naturally.
3041
3042selecttype (selecttype.U):
3043 This variable holds the type used for the 2nd, 3rd, and 4th
3044 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
3045 is defined, and 'int *' otherwise. This is only useful if you
3046 have select(), naturally.
3047
3048sendmail (Loc.U):
ff935051
JH
3049 This variable is defined but not used by Configure.
3050 The value is a plain '' and is not useful.
781b178c
JH
3051
3052sh (sh.U):
3053 This variable contains the full pathname of the shell used
3054 on this system to execute Bourne shell scripts. Usually, this will be
3055 /bin/sh, though it's possible that some systems will have /bin/ksh,
3056 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
3057 D:/bin/sh.exe.
3058 This unit comes before Options.U, so you can't set sh with a '-D'
3059 option, though you can override this (and startsh)
3060 with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
3061
3062shar (Loc.U):
3063 This variable is defined but not used by Configure.
3064 The value is a plain '' and is not useful.
3065
3066sharpbang (spitshell.U):
3067 This variable contains the string #! if this system supports that
3068 construct.
3069
3070shmattype (d_shmat.U):
3071 This symbol contains the type of pointer returned by shmat().
3072 It can be 'void *' or 'char *'.
3073
3074shortsize (intsize.U):
3075 This variable contains the value of the SHORTSIZE symbol which
3076 indicates to the C program how many bytes there are in a short.
3077
3078shrpenv (libperl.U):
3079 If the user builds a shared libperl.so, then we need to tell the
3080 'perl' executable where it will be able to find the installed libperl.so.
3081 One way to do this on some systems is to set the environment variable
3082 LD_RUN_PATH to the directory that will be the final location of the
3083 shared libperl.so. The makefile can use this with something like
3084 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
3085 Typical values are
3086 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
3087 or
3088 shrpenv=''
3089 See the main perl Makefile.SH for actual working usage.
3090 Alternatively, we might be able to use a command line option such
3091 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
3092 $archlibexp/CORE (Linux).
3093
3094shsharp (spitshell.U):
3095 This variable tells further Configure units whether your sh can
3096 handle # comments.
3097
3098sig_count (sig_name.U):
3099 This variable holds a number larger than the largest valid
3100 signal number. This is usually the same as the NSIG macro.
3101
3102sig_name (sig_name.U):
3103 This variable holds the signal names, space separated. The leading
3104 SIG in signal name is removed. A ZERO is prepended to the
3105 list. This is currently not used.
3106
3107sig_name_init (sig_name.U):
3108 This variable holds the signal names, enclosed in double quotes and
3109 separated by commas, suitable for use in the SIG_NAME definition
3110 below. A "ZERO" is prepended to the list, and the list is
3111 terminated with a plain 0. The leading SIG in signal names
3112 is removed. See sig_num.
3113
3114sig_num (sig_name.U):
3115 This variable holds the signal numbers, space separated. A ZERO is
3116 prepended to the list (corresponding to the fake SIGZERO), and
3117 the list is terminated with a 0. Those numbers correspond to
3118 the value of the signal listed in the same place within the
3119 sig_name list.
3120
3121sig_num_init (sig_name.U):
3122 This variable holds the signal numbers, enclosed in double quotes and
3123 separated by commas, suitable for use in the SIG_NUM definition
3124 below. A "ZERO" is prepended to the list, and the list is
3125 terminated with a plain 0.
3126
3127signal_t (d_voidsig.U):
3128 This variable holds the type of the signal handler (void or int).
3129
3130sitearch (sitearch.U):
3131 This variable contains the eventual value of the SITEARCH symbol,
3132 which is the name of the private library for this package. It may
3133 have a ~ on the front. It is up to the makefile to eventually create
3134 this directory while performing installation (with ~ substitution).
f868067f
JH
3135 The standard distribution will put nothing in this directory.
3136 After perl has been installed, users may install their own local
3137 architecture-dependent modules in this directory with
3138 MakeMaker Makefile.PL
3139 or equivalent. See INSTALL for details.
781b178c
JH
3140
3141sitearchexp (sitearch.U):
3142 This variable is the ~name expanded version of sitearch, so that you
3143 may use it directly in Makefiles or shell scripts.
3144
0617aed7
JH
3145sitebin (sitebin.U):
3146 This variable holds the name of the directory in which the user wants
3147 to put add-on publicly executable files for the package in question. It
3148 is most often a local directory such as /usr/local/bin. Programs using
3149 this variable must be prepared to deal with ~name substitution.
f868067f
JH
3150 The standard distribution will put nothing in this directory.
3151 After perl has been installed, users may install their own local
3152 executables in this directory with
3153 MakeMaker Makefile.PL
3154 or equivalent. See INSTALL for details.
0617aed7
JH
3155
3156sitebinexp (sitebin.U):
3157 This is the same as the sitebin variable, but is filename expanded at
3158 configuration time, for use in your makefiles.
3159
781b178c
JH
3160sitelib (sitelib.U):
3161 This variable contains the eventual value of the SITELIB symbol,
3162 which is the name of the private library for this package. It may
3163 have a ~ on the front. It is up to the makefile to eventually create
3164 this directory while performing installation (with ~ substitution).
f868067f
JH
3165 The standard distribution will put nothing in this directory.
3166 After perl has been installed, users may install their own local
3167 architecture-independent modules in this directory with
3168 MakeMaker Makefile.PL
3169 or equivalent. See INSTALL for details.
781b178c 3170
526fdc24
MS
3171sitelib_stem (sitelib.U):
3172 This variable is $sitelibexp with any trailing version-specific component
3173 removed. The elements in inc_version_list (inc_version_list.U) can
3174 be tacked onto this variable to generate a list of directories to search.
3175
781b178c
JH
3176sitelibexp (sitelib.U):
3177 This variable is the ~name expanded version of sitelib, so that you
3178 may use it directly in Makefiles or shell scripts.
3179
3180siteprefix (siteprefix.U):
3181 This variable holds the full absolute path of the directory below
3182 which the user will install add-on packages.
f868067f 3183 See INSTALL for usage and examples.
781b178c
JH
3184
3185siteprefixexp (siteprefix.U):
3186 This variable holds the full absolute path of the directory below
3187 which the user will install add-on packages. Derived from siteprefix.
3188
a13ea748
JH
3189sizesize (sizesize.U):
3190 This variable contains the size of a sizetype in bytes.
3191
781b178c
JH
3192sizetype (sizetype.U):
3193 This variable defines sizetype to be something like size_t,
3194 unsigned long, or whatever type is used to declare length
3195 parameters for string functions.
3196
3197sleep (Loc.U):
3198 This variable is defined but not used by Configure.
3199 The value is a plain '' and is not useful.
3200
3201smail (Loc.U):
3202 This variable is defined but not used by Configure.
3203 The value is a plain '' and is not useful.
3204
3205small (models.U):
3206 This variable contains a flag which will tell the C compiler and loader
3207 to produce a program running with a small memory model. It is up to
3208 the Makefile to use this.
3209
3210so (so.U):
3211 This variable holds the extension used to identify shared libraries
3212 (also known as shared objects) on the system. Usually set to 'so'.
3213
3214sockethdr (d_socket.U):
3215 This variable has any cpp '-I' flags needed for socket support.
3216
3217socketlib (d_socket.U):
3218 This variable has the names of any libraries needed for socket support.
3219
c890dc6c
JH
3220socksizetype (socksizetype.U):
3221 This variable holds the type used for the size argument
3222 for various socket calls like accept. Usual values include
3223 socklen_t, size_t, and int.
3224
781b178c 3225sort (Loc.U):
5bf26616 3226 This variable is used internally by Configure to determine the
781b178c
JH
3227 full pathname (if any) of the sort program. After Configure runs,
3228 the value is reset to a plain "sort" and is not useful.
3229
3230spackage (package.U):
3231 This variable contains the name of the package being constructed,
3232 with the first letter uppercased, i.e. suitable for starting
3233 sentences.
3234
3235spitshell (spitshell.U):
3236 This variable contains the command necessary to spit out a runnable
3237 shell on this system. It is either cat or a grep '-v' for # comments.
3238
3239split (models.U):
3240 This variable contains a flag which will tell the C compiler and loader
3241 to produce a program that will run in separate I and D space, for those
3242 machines that support separation of instruction and data space. It is
3243 up to the Makefile to use this.
3244
ff935051
JH
3245sPRId64 (quadfio.U):
3246 This variable, if defined, contains the string used by stdio to
3247 format 64-bit decimal numbers (format 'd') for output.
3248
3249sPRIeldbl (longdblfio.U):
3250 This variable, if defined, contains the string used by stdio to
3251 format long doubles (format 'e') for output.
3252
3253sPRIEldbl (longdblfio.U):
3254 This variable, if defined, contains the string used by stdio to
3255 format long doubles (format 'E') for output.
3256
3257sPRIfldbl (longdblfio.U):
3258 This variable, if defined, contains the string used by stdio to
3259 format long doubles (format 'f') for output.
3260
3261sPRIFldbl (longdblfio.U):
3262 This variable, if defined, contains the string used by stdio to
3263 format long doubles (format 'F') for output.
3264
3265sPRIgldbl (longdblfio.U):
3266 This variable, if defined, contains the string used by stdio to
3267 format long doubles (format 'g') for output.
3268
3269sPRIGldbl (longdblfio.U):
3270 This variable, if defined, contains the string used by stdio to
3271 format long doubles (format 'G') for output.
3272
3273sPRIi64 (quadfio.U):
3274 This variable, if defined, contains the string used by stdio to
3275 format 64-bit decimal numbers (format 'i') for output.
3276
3277sPRIo64 (quadfio.U):
3278 This variable, if defined, contains the string used by stdio to
3279 format 64-bit octal numbers (format 'o') for output.
3280
3281sPRIu64 (quadfio.U):
3282 This variable, if defined, contains the string used by stdio to
3283 format 64-bit unsigned decimal numbers (format 'u') for output.
3284
3285sPRIx64 (quadfio.U):
3286 This variable, if defined, contains the string used by stdio to
3287 format 64-bit hexadecimal numbers (format 'x') for output.
3288
3289sPRIX64 (quadfio.U):
3290 This variable, if defined, contains the string used by stdio to
3291 format 64-bit hExADECimAl numbers (format 'X') for output.
3292
781b178c
JH
3293src (src.U):
3294 This variable holds the path to the package source. It is up to
3295 the Makefile to use this variable and set VPATH accordingly to
3296 find the sources remotely.
3297
3298ssizetype (ssizetype.U):
3299 This variable defines ssizetype to be something like ssize_t,
3300 long or int. It is used by functions that return a count
3301 of bytes or an error condition. It must be a signed type.
3302 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
3303
3304startperl (startperl.U):
3305 This variable contains the string to put on the front of a perl
3306 script to make sure (hopefully) that it runs with perl and not some
3307 shell. Of course, that leading line must be followed by the classical
3308 perl idiom:
3309 eval 'exec perl -S $0 ${1+"$@"}'
3310 if $running_under_some_shell;
3311 to guarantee perl startup should the shell execute the script. Note
3312 that this magic incatation is not understood by csh.
3313
3314startsh (startsh.U):
3315 This variable contains the string to put on the front of a shell
3316 script to make sure (hopefully) that it runs with sh and not some
3317 other shell.
3318
3319static_ext (Extensions.U):
3320 This variable holds a list of XS extension files we want to
3321 link statically into the package. It is used by Makefile.
3322
3323stdchar (stdchar.U):
3324 This variable conditionally defines STDCHAR to be the type of char
3325 used in stdio.h. It has the values "unsigned char" or "char".
3326
3327stdio_base (d_stdstdio.U):
3328 This variable defines how, given a FILE pointer, fp, to access the
3329 _base field (or equivalent) of stdio.h's FILE structure. This will
3330 be used to define the macro FILE_base(fp).
3331
3332stdio_bufsiz (d_stdstdio.U):
3333 This variable defines how, given a FILE pointer, fp, to determine
3334 the number of bytes store in the I/O buffer pointer to by the
3335 _base field (or equivalent) of stdio.h's FILE structure. This will
3336 be used to define the macro FILE_bufsiz(fp).
3337
3338stdio_cnt (d_stdstdio.U):
3339 This variable defines how, given a FILE pointer, fp, to access the
3340 _cnt field (or equivalent) of stdio.h's FILE structure. This will
3341 be used to define the macro FILE_cnt(fp).
3342
3343stdio_filbuf (d_stdstdio.U):
3344 This variable defines how, given a FILE pointer, fp, to tell
3345 stdio to refill it's internal buffers (?). This will
3346 be used to define the macro FILE_filbuf(fp).
3347
3348stdio_ptr (d_stdstdio.U):
3349 This variable defines how, given a FILE pointer, fp, to access the
3350 _ptr field (or equivalent) of stdio.h's FILE structure. This will
3351 be used to define the macro FILE_ptr(fp).
3352
3353stdio_stream_array (stdio_streams.U):
3354 This variable tells the name of the array holding the stdio streams.
3355 Usual values include _iob, __iob, and __sF.
3356
3357strings (i_string.U):
3358 This variable holds the full path of the string header that will be
3359 used. Typically /usr/include/string.h or /usr/include/strings.h.
3360
3361submit (Loc.U):
3362 This variable is defined but not used by Configure.
3363 The value is a plain '' and is not useful.
3364
3365subversion (patchlevel.U):
3366 The subversion level of this package.
3367 The value of subversion comes from the patchlevel.h file.
ff935051 3368 In a version number such as 5.6.1, this is the "1".
c890dc6c 3369 In patchlevel.h, this is referred to as "PERL_SUBVERSION".
781b178c
JH
3370 This is unique to perl.
3371
3372sysman (sysman.U):
3373 This variable holds the place where the manual is located on this
3374 system. It is not the place where the user wants to put his manual
3375 pages. Rather it is the place where Configure may look to find manual
3376 for unix commands (section 1 of the manual usually). See mansrc.
3377
3378tail (Loc.U):
3379 This variable is defined but not used by Configure.
3380 The value is a plain '' and is not useful.
3381
3382tar (Loc.U):
3383 This variable is defined but not used by Configure.
3384 The value is a plain '' and is not useful.
3385
3386tbl (Loc.U):
3387 This variable is defined but not used by Configure.
3388 The value is a plain '' and is not useful.
3389
3390tee (Loc.U):
3391 This variable is defined but not used by Configure.
3392 The value is a plain '' and is not useful.
3393
3394test (Loc.U):
5bf26616 3395 This variable is used internally by Configure to determine the
781b178c
JH
3396 full pathname (if any) of the test program. After Configure runs,
3397 the value is reset to a plain "test" and is not useful.
3398
3399timeincl (i_time.U):
3400 This variable holds the full path of the included time header(s).
3401
3402timetype (d_time.U):
3403 This variable holds the type returned by time(). It can be long,
3404 or time_t on BSD sites (in which case <sys/types.h> should be
3405 included). Anyway, the type Time_t should be used.
3406
3407touch (Loc.U):
5bf26616 3408 This variable is used internally by Configure to determine the
781b178c
JH
3409 full pathname (if any) of the touch program. After Configure runs,
3410 the value is reset to a plain "touch" and is not useful.
3411
3412tr (Loc.U):
5bf26616 3413 This variable is used internally by Configure to determine the
781b178c
JH
3414 full pathname (if any) of the tr program. After Configure runs,
3415 the value is reset to a plain "tr" and is not useful.
3416
3417trnl (trnl.U):
3418 This variable contains the value to be passed to the tr(1)
3419 command to transliterate a newline. Typical values are
3420 '\012' and '\n'. This is needed for EBCDIC systems where
3421 newline is not necessarily '\012'.
3422
3423troff (Loc.U):
3424 This variable is defined but not used by Configure.
3425 The value is a plain '' and is not useful.
3426
a22e52b9
JH
3427u16size (perlxv.U):
3428 This variable is the size of an U16 in bytes.
3429
3430u16type (perlxv.U):
3431 This variable contains the C type used for Perl's U16.
3432
3433u32size (perlxv.U):
3434 This variable is the size of an U32 in bytes.
3435
3436u32type (perlxv.U):
3437 This variable contains the C type used for Perl's U32.
3438
3439u64size (perlxv.U):
3440 This variable is the size of an U64 in bytes.
3441
3442u64type (perlxv.U):
3443 This variable contains the C type used for Perl's U64.
3444
3445u8size (perlxv.U):
3446 This variable is the size of an U8 in bytes.
3447
3448u8type (perlxv.U):
3449 This variable contains the C type used for Perl's U8.
3450
3451uidformat (uidf.U):
3452 This variable contains the format string used for printing a Uid_t.
3453
2d228ff3
JH
3454uidsign (uidsign.U):
3455 This variable contains the signedness of a uidtype.
3456 1 for unsigned, -1 for signed.
3457
785fb66b
JH
3458uidsize (uidsize.U):
3459 This variable contains the size of a uidtype in bytes.
3460
781b178c
JH
3461uidtype (uidtype.U):
3462 This variable defines Uid_t to be something like uid_t, int,
3463 ushort, or whatever type is used to declare user ids in the kernel.
3464
3465uname (Loc.U):
5bf26616 3466 This variable is used internally by Configure to determine the
781b178c
JH
3467 full pathname (if any) of the uname program. After Configure runs,
3468 the value is reset to a plain "uname" and is not useful.
3469
3470uniq (Loc.U):
5bf26616 3471 This variable is used internally by Configure to determine the
781b178c
JH
3472 full pathname (if any) of the uniq program. After Configure runs,
3473 the value is reset to a plain "uniq" and is not useful.
3474
0befd8de
JH
3475uquadtype (quadtype.U):
3476 This variable defines Uquad_t to be something like unsigned long,
3477 unsigned int, unsigned long long, uint64_t, or whatever type is
3478 used for 64-bit integers.
3479
aaacdc8b
GS
3480use5005threads (usethreads.U):
3481 This variable conditionally defines the USE_5005THREADS symbol,
3482 and indicates that Perl should be built to use the 5.005-based
3483 threading implementation.
3484
10cc9d2a
JH
3485use64bitall (use64bits.U):
3486 This variable conditionally defines the USE_64_BIT_ALL symbol,
3487 and indicates that 64-bit integer types should be used
3488 when available. The maximal possible
3489 64-bitness is employed: LP64 or ILP64, meaning that you will
3490 be able to use more than 2 gigabytes of memory. This mode is
3491 even more binary incompatible than USE_64_BIT_INT. You may not
3492 be able to run the resulting executable in a 32-bit CPU at all or
3493 you may need at least to reboot your OS to 64-bit mode.
3494
3495use64bitint (use64bits.U):
3496 This variable conditionally defines the USE_64_BIT_INT symbol,
aaacdc8b 3497 and indicates that 64-bit integer types should be used
c890dc6c
JH
3498 when available. The minimal possible 64-bitness
3499 is employed, just enough to get 64-bit integers into Perl.
3500 This may mean using for example "long longs", while your memory
3501 may still be limited to 2 gigabytes.
781b178c
JH
3502
3503usedl (dlsrc.U):
ff935051 3504 This variable indicates if the system supports dynamic
781b178c
JH
3505 loading of some sort. See also dlsrc and dlobj.
3506
aaacdc8b
GS
3507useithreads (usethreads.U):
3508 This variable conditionally defines the USE_ITHREADS symbol,
3509 and indicates that Perl should be built to use the interpreter-based
3510 threading implementation.
3511
5bf26616 3512uselargefiles (uselfs.U):
1baac590
JH
3513 This variable conditionally defines the USE_LARGE_FILES symbol,
3514 and indicates that large file interfaces should be used when
c890dc6c 3515 available.
1baac590 3516
ca24dfc6
LV
3517uselongdouble (uselongdbl.U):
3518 This variable conditionally defines the USE_LONG_DOUBLE symbol,
3519 and indicates that long doubles should be used when available.
3520
1baac590
JH
3521usemorebits (usemorebits.U):
3522 This variable conditionally defines the USE_MORE_BITS symbol,
3523 and indicates that explicit 64-bit interfaces and long doubles
3524 should be used when available.
3525
781b178c
JH
3526usemultiplicity (usemultiplicity.U):
3527 This variable conditionally defines the MULTIPLICITY symbol,
3528 and indicates that Perl should be built to use multiplicity.
3529
3530usemymalloc (mallocsrc.U):
3531 This variable contains y if the malloc that comes with this package
3532 is desired over the system's version of malloc. People often include
3533 special versions of malloc for effiency, but such versions are often
3534 less portable. See also mallocsrc and mallocobj.
3535 If this is 'y', then -lmalloc is removed from $libs.
3536
3537usenm (usenm.U):
3538 This variable contains 'true' or 'false' depending whether the
3539 nm extraction is wanted or not.
3540
3541useopcode (Extensions.U):
3542 This variable holds either 'true' or 'false' to indicate
3543 whether the Opcode extension should be used. The sole
3544 use for this currently is to allow an easy mechanism
3545 for users to skip the Opcode extension from the Configure
3546 command line.
3547
3548useperlio (useperlio.U):
3549 This variable conditionally defines the USE_PERLIO symbol,
3550 and indicates that the PerlIO abstraction should be
3551 used throughout.
3552
3553useposix (Extensions.U):
3554 This variable holds either 'true' or 'false' to indicate
3555 whether the POSIX extension should be used. The sole
3556 use for this currently is to allow an easy mechanism
3557 for hints files to indicate that POSIX will not compile
3558 on a particular system.
3559
3560usesfio (d_sfio.U):
3561 This variable is set to true when the user agrees to use sfio.
3562 It is set to false when sfio is not available or when the user
3563 explicitely requests not to use sfio. It is here primarily so
3564 that command-line settings can override the auto-detection of
3565 d_sfio without running into a "WHOA THERE".
3566
3567useshrplib (libperl.U):
3568 This variable is set to 'yes' if the user wishes
3569 to build a shared libperl, and 'no' otherwise.
3570
3571usesocks (usesocks.U):
3572 This variable conditionally defines the USE_SOCKS symbol,
3573 and indicates that Perl should be built to use SOCKS.
3574
3575usethreads (usethreads.U):
3576 This variable conditionally defines the USE_THREADS symbol,
3577 and indicates that Perl should be built to use threads.
3578
9f50e519
NA
3579usevendorprefix (vendorprefix.U):
3580 This variable tells whether the vendorprefix
3581 and consequently other vendor* paths are in use.
3582
781b178c
JH
3583usevfork (d_vfork.U):
3584 This variable is set to true when the user accepts to use vfork.
3585 It is set to false when no vfork is available or when the user
3586 explicitely requests not to use vfork.
3587
3588usrinc (usrinc.U):
3589 This variable holds the path of the include files, which is
3590 usually /usr/include. It is mainly used by other Configure units.
3591
3592uuname (Loc.U):
3593 This variable is defined but not used by Configure.
3594 The value is a plain '' and is not useful.
3595
a22e52b9
JH
3596uvoformat (perlxvf.U):
3597 This variable contains the format string used for printing
3598 a Perl UV as an unsigned octal integer.
3599
3600uvsize (perlxv.U):
3601 This variable is the size of a UV in bytes.
3602
3603uvtype (perlxv.U):
3604 This variable contains the C type used for Perl's UV.
3605
3606uvuformat (perlxvf.U):
3607 This variable contains the format string used for printing
3608 a Perl UV as an unsigned decimal integer.
3609
3610uvxformat (perlxvf.U):
3611 This variable contains the format string used for printing
6b4667fc
A
3612 a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
3613
3614uvXformat (perlxvf.U):
3615 This variable contains the format string used for printing
3616 a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
a22e52b9 3617
526fdc24
MS
3618vendorarch (vendorarch.U):
3619 This variable contains the value of the PERL_VENDORARCH symbol.
3620 It may have a ~ on the front.
3621 The standard distribution will put nothing in this directory.
3622 Vendors who distribute perl may wish to place their own
3623 architecture-dependent modules and extensions in this directory with
3624 MakeMaker Makefile.PL INSTALLDIRS=vendor
3625 or equivalent. See INSTALL for details.
3626
3627vendorarchexp (vendorarch.U):
3628 This variable is the ~name expanded version of vendorarch, so that you
3629 may use it directly in Makefiles or shell scripts.
3630
0617aed7 3631vendorbin (vendorbin.U):
f868067f
JH
3632 This variable contains the eventual value of the VENDORBIN symbol.
3633 It may have a ~ on the front.
3634 The standard distribution will put nothing in this directory.
3635 Vendors who distribute perl may wish to place additional
3636 binaries in this directory with
3637 MakeMaker Makefile.PL INSTALLDIRS=vendor
3638 or equivalent. See INSTALL for details.
0617aed7
JH
3639
3640vendorbinexp (vendorbin.U):
3641 This variable is the ~name expanded version of vendorbin, so that you
3642 may use it directly in Makefiles or shell scripts.
3643
a3635516
JH
3644vendorlib (vendorlib.U):
3645 This variable contains the eventual value of the VENDORLIB symbol,
f868067f
JH
3646 which is the name of the private library for this package.
3647 The standard distribution will put nothing in this directory.
3648 Vendors who distribute perl may wish to place their own
3649 modules in this directory with
3650 MakeMaker Makefile.PL INSTALLDIRS=vendor
3651 or equivalent. See INSTALL for details.
a3635516 3652
526fdc24
MS
3653vendorlib_stem (vendorlib.U):
3654 This variable is $vendorlibexp with any trailing version-specific component
3655 removed. The elements in inc_version_list (inc_version_list.U) can
3656 be tacked onto this variable to generate a list of directories to search.
3657
a3635516
JH
3658vendorlibexp (vendorlib.U):
3659 This variable is the ~name expanded version of vendorlib, so that you
3660 may use it directly in Makefiles or shell scripts.
3661
3662vendorprefix (vendorprefix.U):
3663 This variable holds the full absolute path of the directory below
3664 which the vendor will install add-on packages.
f868067f 3665 See INSTALL for usage and examples.
a3635516
JH
3666
3667vendorprefixexp (vendorprefix.U):
3668 This variable holds the full absolute path of the directory below
3669 which the vendor will install add-on packages. Derived from vendorprefix.
3670
781b178c 3671version (patchlevel.U):
ff935051 3672 The full version number of this package, such as 5.6.1 (or 5_6_1).
c890dc6c 3673 This combines revision, patchlevel, and subversion to get the
ff935051
JH
3674 full version number, including any possible subversions.
3675 This is suitable for use as a directory name, and hence is
3676 filesystem dependent.
781b178c
JH
3677
3678vi (Loc.U):
3679 This variable is defined but not used by Configure.
3680 The value is a plain '' and is not useful.
3681
3682voidflags (voidflags.U):
3683 This variable contains the eventual value of the VOIDFLAGS symbol,
3684 which indicates how much support of the void type is given by this
3685 compiler. See VOIDFLAGS for more info.
3686
3687xlibpth (libpth.U):
3688 This variable holds extra path (space-separated) used to find
3689 libraries on this platform, for example CPU-specific libraries
3690 (on multi-CPU platforms) may be listed here.
3691
fe749a9f
JH
3692xs_apiversion (xs_apiversion.U):
3693 This variable contains the version of the oldest perl binary
3694 compatible with the present perl. perl.c:incpush() and
3695 lib/lib.pm will automatically search in $sitearch for older
3696 directories across major versions back to xs_apiversion.
3697 This is only useful if you have a perl library directory tree
3698 structured like the default one.
3699 See INSTALL for how this works.
3700 The versioned site_perl directory was introduced in 5.005,
3701 so that is the lowest possible value.
3702 Since this can depend on compile time options (such as
3703 bincompat) it is set by Configure. Other non-default sources
3704 of potential incompatibility, such as multiplicity, threads,
3705 debugging, 64bits, sfio, etc., are not checked for currently,
3706 though in principle we could go snooping around in old
3707 Config.pm files.
3708
781b178c
JH
3709zcat (Loc.U):
3710 This variable is defined but not used by Configure.
3711 The value is a plain '' and is not useful.
3712
3713zip (Loc.U):
5bf26616 3714 This variable is used internally by Configure to determine the
781b178c
JH
3715 full pathname (if any) of the zip program. After Configure runs,
3716 the value is reset to a plain "zip" and is not useful.
3717