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[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
3programs (e.g. I_UNISTD) are already described in config_h.SH.
4
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5_a (Unix.U):
6 This variable defines the extension used for ordinary libraries.
7 For unix, it is '.a'. The '.' is included. Other possible
8 values include '.lib'.
9
10_exe (Unix.U):
11 This variable defines the extension used for executable files.
12 For unix it is empty. Other possible values include '.exe'.
13
14_o (Unix.U):
15 This variable defines the extension used for object files.
16 For unix, it is '.o'. The '.' is included. Other possible
17 values include '.obj'.
18
19afs (afs.U):
20 This variable is set to 'true' if AFS (Andrew File System) is used
21 on the system, 'false' otherwise. It is possible to override this
22 with a hint value or command line option, but you'd better know
23 what you are doing.
24
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25alignbytes (alignbytes.U):
26 This variable holds the number of bytes required to align a
27 double. Usual values are 2, 4 and 8.
28
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29ansi2knr (ansi2knr.U):
30 This variable is set if the user needs to run ansi2knr.
31 Currently, this is not supported, so we just abort.
32
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33aphostname (d_gethname.U):
34 Thie variable contains the command which can be used to compute the
35 host name. The command is fully qualified by its absolute path, to make
36 it safe when used by a process with super-user privileges.
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37
38archlib (archlib.U):
39 This variable holds the name of the directory in which the user wants
40 to put architecture-dependent public library files for $package.
41 It is most often a local directory such as /usr/local/lib.
42 Programs using this variable must be prepared to deal
43 with filename expansion.
44
45archlibexp (archlib.U):
46 This variable is the same as the archlib variable, but is
47 filename expanded at configuration time, for convenient use.
48
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49archname (archname.U):
50 This variable is a short name to characterize the current
51 architecture. It is used mainly to construct the default archlib.
52
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53archobjs (Unix.U):
54 This variable defines any additional objects that must be linked
55 in with the program on this architecture. On unix, it is usually
56 empty. It is typically used to include emulations of unix calls
57 or other facilities. For perl on OS/2, for example, this would
58 include os2/os2.obj.
59
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60baserev (baserev.U):
61 The base revision level of this package, from the .package file.
62
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63bin (bin.U):
64 This variable holds the name of the directory in which the user wants
65 to put publicly executable images for the package in question. It
66 is most often a local directory such as /usr/local/bin. Programs using
67 this variable must be prepared to deal with ~name substitution.
68
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69binexp (bin.U):
70 This is the same as the bin variable, but is filename expanded at
71 configuration time, for use in your makefiles.
72
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73byteorder (byteorder.U):
74 This variable holds the byte order. In the following, larger digits
75 indicate more significance. The variable byteorder is either 4321
76 on a big-endian machine, or 1234 on a little-endian, or 87654321
77 on a Cray ... or 3412 with weird order !
78
79c (n.U):
80 This variable contains the \c string if that is what causes the echo
81 command to suppress newline. Otherwise it is null. Correct usage is
82 $echo $n "prompt for a question: $c".
83
84castflags (d_castneg.U):
85 This variable contains a flag that precise difficulties the
86 compiler has casting odd floating values to unsigned long:
87 0 = ok
88 1 = couldn't cast < 0
89 2 = couldn't cast >= 0x80000000
90 4 = couldn't cast in argument expression list
91
92cc (cc.U):
93 This variable holds the name of a command to execute a C compiler which
94 can resolve multiple global references that happen to have the same
95 name. Usual values are "cc", "Mcc", "cc -M", and "gcc".
96
97cccdlflags (dlsrc.U):
98 This variable contains any special flags that might need to be
99 passed with cc -c to compile modules to be used to create a shared
100 library that will be used for dynamic loading. For hpux, this
101 should be +z. It is up to the makefile to use it.
102
103ccdlflags (dlsrc.U):
104 This variable contains any special flags that might need to be
105 passed to cc to link with a shared library for dynamic loading.
106 It is up to the makefile to use it. For sunos 4.1, it should
107 be empty.
108
109ccflags (ccflags.U):
110 This variable contains any additional C compiler flags desired by
111 the user. It is up to the Makefile to use this.
112
113cf_by (cf_who.U):
114 Login name of the person who ran the Configure script and answered the
115 questions. This is used to tag both config.sh and config_h.SH.
116
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117cf_email (cf_email.U):
118 Electronic mail address of the person who ran Configure. This can be
119 used by units that require the user's e-mail, like MailList.U.
120
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121cf_time (cf_who.U):
122 Holds the output of the "date" command when the configuration file was
123 produced. This is used to tag both config.sh and config_h.SH.
124
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125clocktype (d_times.U):
126 This variable holds the type returned by times(). It can be long,
127 or clock_t on BSD sites (in which case <sys/types.h> should be
128 included).
129
130contains (contains.U):
131 This variable holds the command to do a grep with a proper return
132 status. On most sane systems it is simply "grep". On insane systems
133 it is a grep followed by a cat followed by a test. This variable
134 is primarily for the use of other Configure units.
135
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136cpp_stuff (cpp_stuff.U):
137 This variable contains an identification of the catenation mechanism
138 used by the C preprocessor.
139
140cppflags (ccflags.U):
141 This variable holds the flags that will be passed to the C pre-
142 processor. It is up to the Makefile to use it.
143
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144cpplast (cppstdin.U):
145 This variable has the same functionality as cppminus, only it applies to
146 cpprun and not cppstdin.
147
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148cppminus (cppstdin.U):
149 This variable contains the second part of the string which will invoke
150 the C preprocessor on the standard input and produce to standard
151 output. This variable will have the value "-" if cppstdin needs a minus
152 to specify standard input, otherwise the value is "".
153
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154cpprun (cppstdin.U):
155 This variable contains the command which will invoke a C preprocessor
156 on standard input and put the output to stdout. It is guaranteed not
157 to be a wrapper and may be a null string if no preprocessor can be
158 made directly available. This preprocessor might be different from the
159 one used by the C compiler. Don't forget to append cpplast after the
160 preprocessor options.
161
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162cppstdin (cppstdin.U):
163 This variable contains the command which will invoke the C
164 preprocessor on standard input and put the output to stdout.
165 It is primarily used by other Configure units that ask about
166 preprocessor symbols.
167
168cryptlib (d_crypt.U):
169 This variable holds -lcrypt or the path to a libcrypt.a archive if
170 the crypt() function is not defined in the standard C library. It is
171 up to the Makefile to use this.
172
173d_Gconvert (d_gconvert.U):
174 This variable holds what Gconvert is defined as to convert
175 floating point numbers into strings. It could be 'gconvert'
176 or a more complex macro emulating gconvert with gcvt() or sprintf.
177
178d_access (d_access.U):
179 This variable conditionally defines HAS_ACCESS if the access() system
180 call is available to check for access permissions using real IDs.
181
182d_alarm (d_alarm.U):
183 This variable conditionally defines the HAS_ALARM symbol, which
184 indicates to the C program that the alarm() routine is available.
185
186d_archlib (archlib.U):
187 This variable conditionally defines ARCHLIB to hold the pathname
188 of architecture-dependent library files for $package. If
189 $archlib is the same as $privlib, then this is set to undef.
190
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191d_attribut (d_attribut.U):
192 This variable conditionally defines HASATTRIBUTE, which
193 indicates the C compiler can check for function attributes,
194 such as printf formats.
195
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196d_bcmp (d_bcmp.U):
197 This variable conditionally defines the HAS_BCMP symbol if
198 the bcmp() routine is available to compare strings.
199
200d_bcopy (d_bcopy.U):
201 This variable conditionally defines the HAS_BCOPY symbol if
202 the bcopy() routine is available to copy strings.
203
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204d_bsd (Guess.U):
205 This symbol conditionally defines the symbol BSD when running on a
206 BSD system.
7e1af8bc 207
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208d_bsdgetpgrp (d_getpgrp.U):
209 This variable conditionally defines USE_BSD_GETPGRP if
210 getpgrp needs one arguments whereas USG one needs none.
211
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212d_bsdsetpgrp (d_setpgrp.U):
213 This variable conditionally defines USE_BSD_SETPGRP if
214 setpgrp needs two arguments whereas USG one needs none.
215 See also d_setpgid for a POSIX interface.
216
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217d_bzero (d_bzero.U):
218 This variable conditionally defines the HAS_BZERO symbol if
219 the bzero() routine is available to set memory to 0.
220
221d_casti32 (d_casti32.U):
222 This variable conditionally defines CASTI32, which indicates
223 whether the C compiler can cast large floats to 32-bit ints.
224
225d_castneg (d_castneg.U):
226 This variable conditionally defines CASTNEG, which indicates
227 wether the C compiler can cast negative float to unsigned.
228
229d_charvspr (d_vprintf.U):
230 This variable conditionally defines CHARVSPRINTF if this system
231 has vsprintf returning type (char*). The trend seems to be to
232 declare it as "int vsprintf()".
233
234d_chown (d_chown.U):
235 This variable conditionally defines the HAS_CHOWN symbol, which
236 indicates to the C program that the chown() routine is available.
237
238d_chroot (d_chroot.U):
239 This variable conditionally defines the HAS_CHROOT symbol, which
240 indicates to the C program that the chroot() routine is available.
241
242d_chsize (d_chsize.U):
243 This variable conditionally defines the CHSIZE symbol, which
244 indicates to the C program that the chsize() routine is available
245 to truncate files. You might need a -lx to get this routine.
246
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247d_closedir (d_closedir.U):
248 This variable conditionally defines HAS_CLOSEDIR if closedir() is
249 available.
250
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251d_const (d_const.U):
252 This variable conditionally defines the HASCONST symbol, which
253 indicates to the C program that this C compiler knows about the
254 const type.
255
256d_crypt (d_crypt.U):
257 This variable conditionally defines the CRYPT symbol, which
258 indicates to the C program that the crypt() routine is available
259 to encrypt passwords and the like.
260
261d_csh (d_csh.U):
262 This variable conditionally defines the CSH symbol, which
263 indicates to the C program that the C-shell exists.
264
265d_cuserid (d_cuserid.U):
266 This variable conditionally defines the HAS_CUSERID symbol, which
267 indicates to the C program that the cuserid() routine is available
268 to get character login names.
269
270d_dbl_dig (d_dbl_dig.U):
271 This variable conditionally defines d_dbl_dig if this system's
272 header files provide DBL_DIG, which is the number of significant
273 digits in a double precision number.
274
275d_difftime (d_difftime.U):
276 This variable conditionally defines the HAS_DIFFTIME symbol, which
277 indicates to the C program that the difftime() routine is available.
278
279d_dirnamlen (i_dirent.U):
280 This variable conditionally defines DIRNAMLEN, which indicates
281 to the C program that the length of directory entry names is
282 provided by a d_namelen field.
283
284d_dlerror (d_dlerror.U):
285 This variable conditionally defines the HAS_DLERROR symbol, which
286 indicates to the C program that the dlerror() routine is available.
287
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288d_dlopen (d_dlopen.U):
289 This variable conditionally defines the HAS_DLOPEN symbol, which
290 indicates to the C program that the dlopen() routine is available.
291
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292d_dlsymun (d_dlsymun.U):
293 This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
294 indicates that we need to prepend an underscore to the symbol
295 name before calling dlsym().
296
297d_dosuid (d_dosuid.U):
298 This variable conditionally defines the symbol DOSUID, which
299 tells the C program that it should insert setuid emulation code
300 on hosts which have setuid #! scripts disabled.
301
302d_dup2 (d_dup2.U):
303 This variable conditionally defines HAS_DUP2 if dup2() is
304 available to duplicate file descriptors.
305
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306d_endhent (d_endhent.U):
307 This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
308 available to close whatever was being used for host queries.
309
310d_endnent (d_endnent.U):
311 This variable conditionally defines HAS_ENDNETENT if endnetent() is
312 available to close whatever was being used for network queries.
313
314d_endpent (d_endpent.U):
315 This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
316 available to close whatever was being used for protocol queries.
317
318d_endsent (d_endsent.U):
319 This variable conditionally defines HAS_ENDSERVENT if endservent() is
320 available to close whatever was being used for service queries.
321
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322d_eofnblk (nblock_io.U):
323 This variable conditionally defines EOF_NONBLOCK if EOF can be seen
324 when reading from a non-blocking I/O source.
325
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326d_eunice (Guess.U):
327 This variable conditionally defines the symbols EUNICE and VAX, which
328 alerts the C program that it must deal with ideosyncracies of VMS.
329
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330d_fchmod (d_fchmod.U):
331 This variable conditionally defines the HAS_FCHMOD symbol, which
332 indicates to the C program that the fchmod() routine is available
333 to change mode of opened files.
334
335d_fchown (d_fchown.U):
336 This variable conditionally defines the HAS_FCHOWN symbol, which
337 indicates to the C program that the fchown() routine is available
338 to change ownership of opened files.
339
340d_fcntl (d_fcntl.U):
341 This variable conditionally defines the HAS_FCNTL symbol, and indicates
342 whether the fcntl() function exists
343
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344d_fd_macros (d_fd_set.U):
345 This variable contains the eventual value of the HAS_FD_MACROS symbol,
346 which indicates if your C compiler knows about the macros which
347 manipulate an fd_set.
348
349d_fd_set (d_fd_set.U):
350 This variable contains the eventual value of the HAS_FD_SET symbol,
351 which indicates if your C compiler knows about the fd_set typedef.
352
353d_fds_bits (d_fd_set.U):
354 This variable contains the eventual value of the HAS_FDS_BITS symbol,
355 which indicates if your fd_set typedef contains the fds_bits member.
356 If you have an fd_set typedef, but the dweebs who installed it did
357 a half-fast job and neglected to provide the macros to manipulate
358 an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
359
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360d_fgetpos (d_fgetpos.U):
361 This variable conditionally defines HAS_FGETPOS if fgetpos() is
362 available to get the file position indicator.
363
364d_flexfnam (d_flexfnam.U):
365 This variable conditionally defines the FLEXFILENAMES symbol, which
366 indicates that the system supports filenames longer than 14 characters.
367
368d_flock (d_flock.U):
369 This variable conditionally defines HAS_FLOCK if flock() is
370 available to do file locking.
371
372d_fork (d_fork.U):
373 This variable conditionally defines the HAS_FORK symbol, which
374 indicates to the C program that the fork() routine is available.
375
376d_fpathconf (d_pathconf.U):
377 This variable conditionally defines the HAS_FPATHCONF symbol, which
378 indicates to the C program that the pathconf() routine is available
379 to determine file-system related limits and options associated
380 with a given open file descriptor.
381
382d_fsetpos (d_fsetpos.U):
383 This variable conditionally defines HAS_FSETPOS if fsetpos() is
384 available to set the file position indicator.
385
7e1af8bc 386d_ftime (d_ftime.U):
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387 This variable conditionally defines the HAS_FTIME symbol, which indicates
388 that the ftime() routine exists. The ftime() routine is basically
389 a sub-second accuracy clock.
390
391d_getgrps (d_getgrps.U):
392 This variable conditionally defines the HAS_GETGROUPS symbol, which
393 indicates to the C program that the getgroups() routine is available
394 to get the list of process groups.
395
396d_gethbyaddr (d_gethbyad.U):
397 This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
398 indicates to the C program that the gethostbyaddr() routine is available
399 to look up hosts by their IP addresses.
7e1af8bc 400
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401d_gethbyname (d_gethbynm.U):
402 This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
403 indicates to the C program that the gethostbyname() routine is available
404 to look up host names in some data base or other.
405
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406d_gethent (d_gethent.U):
407 This variable conditionally defines HAS_GETHOSTENT if gethostent() is
693762b4 408 available to look up host names in some data base or another.
d7418ba7 409
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410d_gethname (d_gethname.U):
411 This variable conditionally defines the HAS_GETHOSTNAME symbol, which
412 indicates to the C program that the gethostname() routine may be
413 used to derive the host name.
7e1af8bc 414
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415d_gethostprotos (d_gethostprotos.U):
416 This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
417 which indicates to the C program that <netdb.h> supplies
418 prototypes for the various gethost*() functions.
419 See also netdbtype.U for probing for various netdb types.
420
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421d_getlogin (d_getlogin.U):
422 This variable conditionally defines the HAS_GETLOGIN symbol, which
423 indicates to the C program that the getlogin() routine is available
424 to get the login name.
425
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426d_getnbyaddr (d_getnbyad.U):
427 This variable conditionally defines the HAS_GETNETBYADDR symbol, which
428 indicates to the C program that the getnetbyaddr() routine is available
429 to look up networks by their IP addresses.
430
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431d_getnbyname (d_getnbynm.U):
432 This variable conditionally defines the HAS_GETNETBYNAME symbol, which
433 indicates to the C program that the getnetbyname() routine is available
434 to look up networks by their names.
435
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436d_getnent (d_getnent.U):
437 This variable conditionally defines HAS_GETNETENT if getnetent() is
438 available to look up network names in some data base or another.
439
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440d_getnetprotos (d_getnetprotos.U):
441 This variable conditionally defines the HAS_GETNET_PROTOS symbol,
442 which indicates to the C program that <netdb.h> supplies
443 prototypes for the various getnet*() functions.
444 See also netdbtype.U for probing for various netdb types.
445
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446d_getpbyname (d_getprotby.U):
447 This variable conditionally defines the HAS_GETPROTOBYNAME
448 symbol, which indicates to the C program that the
449 getprotobyname() routine is available to look up protocols
450 by their name.
451
452d_getpbynumber (d_getprotby.U):
453 This variable conditionally defines the HAS_GETPROTOBYNUMBER
454 symbol, which indicates to the C program that the
455 getprotobynumber() routine is available to look up protocols
456 by their number.
457
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458d_getpent (d_getpent.U):
459 This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
460 available to look up protocols in some data base or another.
461
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462d_getpgid (d_getpgid.U):
463 This variable conditionally defines the HAS_GETPGID symbol, which
464 indicates to the C program that the getpgid(pid) function
465 is available to get the process group id.
466
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467d_getpgrp2 (d_getpgrp2.U):
468 This variable conditionally defines the HAS_GETPGRP2 symbol, which
469 indicates to the C program that the getpgrp2() (as in DG/UX) routine
470 is available to get the current process group.
471
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472d_getpgrp (d_getpgrp.U):
473 This variable conditionally defines HAS_GETPGRP if getpgrp() is
474 available to get the current process group.
475
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476d_getppid (d_getppid.U):
477 This variable conditionally defines the HAS_GETPPID symbol, which
478 indicates to the C program that the getppid() routine is available
479 to get the parent process ID.
480
481d_getprior (d_getprior.U):
482 This variable conditionally defines HAS_GETPRIORITY if getpriority()
483 is available to get a process's priority.
484
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485d_getprotoprotos (d_getprotoprotos.U):
486 This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
487 which indicates to the C program that <netdb.h> supplies
488 prototypes for the various getproto*() functions.
489 See also netdbtype.U for probing for various netdb types.
490
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491d_getsbyname (d_getsrvby.U):
492 This variable conditionally defines the HAS_GETSERVBYNAME
493 symbol, which indicates to the C program that the
494 getservbyname() routine is available to look up services
495 by their name.
496
497d_getsbyport (d_getsrvby.U):
498 This variable conditionally defines the HAS_GETSERVBYPORT
499 symbol, which indicates to the C program that the
500 getservbyport() routine is available to look up services
501 by their port.
502
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503d_getsent (d_getsent.U):
504 This variable conditionally defines HAS_GETSERVENT if getservent() is
505 available to look up network services in some data base or another.
506
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507d_getservprotos (d_getservprotos.U):
508 This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
509 which indicates to the C program that <netdb.h> supplies
510 prototypes for the various getserv*() functions.
511 See also netdbtype.U for probing for various netdb types.
512
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513d_gettimeod (d_ftime.U):
514 This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
515 indicates that the gettimeofday() system call exists (to obtain a
516 sub-second accuracy clock). You should probably include <sys/resource.h>.
517
518d_gnulibc (d_gnulibc.U):
519 Defined if we're dealing with the GNU C Library.
520
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521d_htonl (d_htonl.U):
522 This variable conditionally defines HAS_HTONL if htonl() and its
523 friends are available to do network order byte swapping.
524
525d_index (d_strchr.U):
526 This variable conditionally defines HAS_INDEX if index() and
527 rindex() are available for string searching.
528
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529d_inetaton (d_inetaton.U):
530 This variable conditionally defines the HAS_INET_ATON symbol, which
531 indicates to the C program that the inet_aton() function is available
532 to parse IP address "dotted-quad" strings.
533
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534d_isascii (d_isascii.U):
535 This variable conditionally defines the HAS_ISASCII constant,
536 which indicates to the C program that isascii() is available.
537
538d_killpg (d_killpg.U):
539 This variable conditionally defines the HAS_KILLPG symbol, which
540 indicates to the C program that the killpg() routine is available
541 to kill process groups.
542
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543d_lchown (d_lchown.U):
544 This variable conditionally defines the HAS_LCHOWN symbol, which
545 indicates to the C program that the lchown() routine is available
546 to operate on a symbolic link (instead of following the link).
547
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548d_link (d_link.U):
549 This variable conditionally defines HAS_LINK if link() is
550 available to create hard links.
551
552d_locconv (d_locconv.U):
553 This variable conditionally defines HAS_LOCALECONV if localeconv() is
554 available for numeric and monetary formatting conventions.
555
556d_lockf (d_lockf.U):
557 This variable conditionally defines HAS_LOCKF if lockf() is
558 available to do file locking.
559
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560d_longdbl (d_longdbl.U):
561 This variable conditionally defines HAS_LONG_DOUBLE if
562 the long double type is supported.
563
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564d_longlong (d_longlong.U):
565 This variable conditionally defines HAS_LONG_LONG if
566 the long long type is supported.
567
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568d_lstat (d_lstat.U):
569 This variable conditionally defines HAS_LSTAT if lstat() is
570 available to do file stats on symbolic links.
571
572d_mblen (d_mblen.U):
573 This variable conditionally defines the HAS_MBLEN symbol, which
574 indicates to the C program that the mblen() routine is available
575 to find the number of bytes in a multibye character.
576
577d_mbstowcs (d_mbstowcs.U):
578 This variable conditionally defines the HAS_MBSTOWCS symbol, which
579 indicates to the C program that the mbstowcs() routine is available
580 to convert a multibyte string into a wide character string.
581
582d_mbtowc (d_mbtowc.U):
583 This variable conditionally defines the HAS_MBTOWC symbol, which
584 indicates to the C program that the mbtowc() routine is available
585 to convert multibyte to a wide character.
586
587d_memcmp (d_memcmp.U):
588 This variable conditionally defines the HAS_MEMCMP symbol, which
589 indicates to the C program that the memcmp() routine is available
590 to compare blocks of memory.
591
592d_memcpy (d_memcpy.U):
593 This variable conditionally defines the HAS_MEMCPY symbol, which
594 indicates to the C program that the memcpy() routine is available
595 to copy blocks of memory.
596
597d_memmove (d_memmove.U):
598 This variable conditionally defines the HAS_MEMMOVE symbol, which
599 indicates to the C program that the memmove() routine is available
600 to copy potentatially overlapping blocks of memory.
601
602d_memset (d_memset.U):
603 This variable conditionally defines the HAS_MEMSET symbol, which
604 indicates to the C program that the memset() routine is available
605 to set blocks of memory.
606
607d_mkdir (d_mkdir.U):
608 This variable conditionally defines the HAS_MKDIR symbol, which
609 indicates to the C program that the mkdir() routine is available
610 to create directories..
611
612d_mkfifo (d_mkfifo.U):
613 This variable conditionally defines the HAS_MKFIFO symbol, which
614 indicates to the C program that the mkfifo() routine is available.
615
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616d_mkstemp (d_mkstemp.U):
617 This variable conditionally defines the HAS_MKSTEMP symbol, which
618 indicates to the C program that the mkstemp() routine is available
619 to create and open a unique tempporary file.
620
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621d_mktime (d_mktime.U):
622 This variable conditionally defines the HAS_MKTIME symbol, which
623 indicates to the C program that the mktime() routine is available.
624
625d_msg (d_msg.U):
626 This variable conditionally defines the HAS_MSG symbol, which
627 indicates that the entire msg*(2) library is present.
628
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629d_msgctl (d_msgctl.U):
630 This variable conditionally defines the HAS_MSGCTL symbol, which
631 indicates to the C program that the msgctl() routine is available.
632
633d_msgget (d_msgget.U):
634 This variable conditionally defines the HAS_MSGGET symbol, which
635 indicates to the C program that the msgget() routine is available.
636
637d_msgrcv (d_msgrcv.U):
638 This variable conditionally defines the HAS_MSGRCV symbol, which
639 indicates to the C program that the msgrcv() routine is available.
640
641d_msgsnd (d_msgsnd.U):
642 This variable conditionally defines the HAS_MSGSND symbol, which
643 indicates to the C program that the msgsnd() routine is available.
644
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645d_mymalloc (mallocsrc.U):
646 This variable conditionally defines MYMALLOC in case other parts
647 of the source want to take special action if MYMALLOC is used.
648 This may include different sorts of profiling or error detection.
649
650d_nice (d_nice.U):
651 This variable conditionally defines the HAS_NICE symbol, which
652 indicates to the C program that the nice() routine is available.
653
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654d_oldpthreads (usethreads.U):
655 This variable conditionally defines the OLD_PTHREADS_API symbol,
656 and indicates that Perl should be built to use the old
657 draft POSIX threads API. This is only potneially meaningful if
658 usethreads is set.
659
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660d_oldsock (d_socket.U):
661 This variable conditionally defines the OLDSOCKET symbol, which
662 indicates that the BSD socket interface is based on 4.1c and not 4.2.
d7418ba7
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663
664d_open3 (d_open3.U):
665 This variable conditionally defines the HAS_OPEN3 manifest constant,
666 which indicates to the C program that the 3 argument version of
667 the open(2) function is available.
668
669d_pathconf (d_pathconf.U):
670 This variable conditionally defines the HAS_PATHCONF symbol, which
671 indicates to the C program that the pathconf() routine is available
672 to determine file-system related limits and options associated
673 with a given filename.
674
675d_pause (d_pause.U):
676 This variable conditionally defines the HAS_PAUSE symbol, which
677 indicates to the C program that the pause() routine is available
678 to suspend a process until a signal is received.
679
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680d_phostname (d_gethname.U):
681 This variable conditionally defines the PHOSTNAME symbol, which
682 contains the shell command which, when fed to popen(), may be
683 used to derive the host name.
684
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685d_pipe (d_pipe.U):
686 This variable conditionally defines the HAS_PIPE symbol, which
687 indicates to the C program that the pipe() routine is available
688 to create an inter-process channel.
689
690d_poll (d_poll.U):
691 This variable conditionally defines the HAS_POLL symbol, which
692 indicates to the C program that the poll() routine is available
693 to poll active file descriptors.
694
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695d_portable (d_portable.U):
696 This variable conditionally defines the PORTABLE symbol, which
697 indicates to the C program that it should not assume that it is
698 running on the machine it was compiled on.
699
700d_pthread_yield (d_pthread_y.U):
701 This variable conditionally defines the HAS_PTHREAD_YIELD
702 symbol if the pthread_yield routine is available to yield
703 the execution of the current thread.
704
705d_pthreads_created_joinable (d_pthreadj.U):
706 This variable conditionally defines the PTHREADS_CREATED_JOINABLE
707 symbol if pthreads are created in the joinable (aka undetached)
708 state.
709
d7418ba7 710d_pwage (i_pwd.U):
c4f23d77 711 This variable conditionally defines PWAGE, which indicates
d7418ba7
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712 that struct passwd contains pw_age.
713
714d_pwchange (i_pwd.U):
c4f23d77 715 This variable conditionally defines PWCHANGE, which indicates
d7418ba7
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716 that struct passwd contains pw_change.
717
718d_pwclass (i_pwd.U):
c4f23d77 719 This variable conditionally defines PWCLASS, which indicates
d7418ba7
PP
720 that struct passwd contains pw_class.
721
722d_pwcomment (i_pwd.U):
c4f23d77 723 This variable conditionally defines PWCOMMENT, which indicates
d7418ba7
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724 that struct passwd contains pw_comment.
725
726d_pwexpire (i_pwd.U):
c4f23d77 727 This variable conditionally defines PWEXPIRE, which indicates
d7418ba7
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728 that struct passwd contains pw_expire.
729
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730d_pwgecos (i_pwd.U):
731 This variable conditionally defines PWGECOS, which indicates
732 that struct passwd contains pw_gecos.
733
d7418ba7 734d_pwquota (i_pwd.U):
c4f23d77 735 This variable conditionally defines PWQUOTA, which indicates
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736 that struct passwd contains pw_quota.
737
738d_readdir (d_readdir.U):
739 This variable conditionally defines HAS_READDIR if readdir() is
740 available to read directory entries.
741
742d_readlink (d_readlink.U):
743 This variable conditionally defines the HAS_READLINK symbol, which
744 indicates to the C program that the readlink() routine is available
745 to read the value of a symbolic link.
746
747d_rename (d_rename.U):
748 This variable conditionally defines the HAS_RENAME symbol, which
749 indicates to the C program that the rename() routine is available
750 to rename files.
751
752d_rewinddir (d_readdir.U):
753 This variable conditionally defines HAS_REWINDDIR if rewinddir() is
754 available.
755
756d_rmdir (d_rmdir.U):
757 This variable conditionally defines HAS_RMDIR if rmdir() is
758 available to remove directories.
759
760d_safebcpy (d_safebcpy.U):
761 This variable conditionally defines the HAS_SAFE_BCOPY symbol if
762 the bcopy() routine can do overlapping copies.
763
764d_safemcpy (d_safemcpy.U):
765 This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
766 the memcpy() routine can do overlapping copies.
767
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768d_sanemcmp (d_sanemcmp.U):
769 This variable conditionally defines the HAS_SANE_MEMCMP symbol if
770 the memcpy() routine is available and can be used to compare relative
771 magnitudes of chars with their high bits set.
772
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773d_sched_yield (d_pthread_y.U):
774 This variable conditionally defines the HAS_SCHED_YIELD
775 symbol if the sched_yield routine is available to yield
776 the execution of the current thread.
777
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778d_seekdir (d_readdir.U):
779 This variable conditionally defines HAS_SEEKDIR if seekdir() is
780 available.
781
782d_select (d_select.U):
783 This variable conditionally defines HAS_SELECT if select() is
784 available to select active file descriptors. A <sys/time.h>
785 inclusion may be necessary for the timeout field.
786
787d_sem (d_sem.U):
788 This variable conditionally defines the HAS_SEM symbol, which
789 indicates that the entire sem*(2) library is present.
790
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791d_semctl (d_semctl.U):
792 This variable conditionally defines the HAS_SEMCTL symbol, which
793 indicates to the C program that the semctl() routine is available.
794
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795d_semctl_semid_ds (d_union_senum.U):
796 This variable conditionally defines USE_SEMCTL_SEMID_DS, which
797 indicates that struct semid_ds * is to be used for semctl IPC_STAT.
798
799d_semctl_semun (d_union_senum.U):
800 This variable conditionally defines USE_SEMCTL_SEMUN, which
801 indicates that union semun is to be used for semctl IPC_STAT.
802
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803d_semget (d_semget.U):
804 This variable conditionally defines the HAS_SEMGET symbol, which
805 indicates to the C program that the semget() routine is available.
806
807d_semop (d_semop.U):
808 This variable conditionally defines the HAS_SEMOP symbol, which
809 indicates to the C program that the semop() routine is available.
810
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811d_setegid (d_setegid.U):
812 This variable conditionally defines the HAS_SETEGID symbol, which
813 indicates to the C program that the setegid() routine is available
814 to change the effective gid of the current program.
815
816d_seteuid (d_seteuid.U):
817 This variable conditionally defines the HAS_SETEUID symbol, which
818 indicates to the C program that the seteuid() routine is available
819 to change the effective uid of the current program.
820
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821d_setgrps (d_setgrps.U):
822 This variable conditionally defines the HAS_SETGROUPS symbol, which
823 indicates to the C program that the setgroups() routine is available
824 to set the list of process groups.
825
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826d_sethent (d_sethent.U):
827 This variable conditionally defines HAS_SETHOSTENT if sethostent() is
828 available.
829
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830d_setlinebuf (d_setlnbuf.U):
831 This variable conditionally defines the HAS_SETLINEBUF symbol, which
832 indicates to the C program that the setlinebuf() routine is available
833 to change stderr or stdout from block-buffered or unbuffered to a
834 line-buffered mode.
835
836d_setlocale (d_setlocale.U):
837 This variable conditionally defines HAS_SETLOCALE if setlocale() is
838 available to handle locale-specific ctype implementations.
839
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840d_setnent (d_setnent.U):
841 This variable conditionally defines HAS_SETNETENT if setnetent() is
842 available.
843
844d_setpent (d_setpent.U):
845 This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
846 available.
847
d7418ba7 848d_setpgid (d_setpgid.U):
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849 This variable conditionally defines the HAS_SETPGID symbol if the
850 setpgid(pid, gpid) function is available to set process group ID.
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851
852d_setpgrp2 (d_setpgrp2.U):
853 This variable conditionally defines the HAS_SETPGRP2 symbol, which
854 indicates to the C program that the setpgrp2() (as in DG/UX) routine
855 is available to set the current process group.
856
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857d_setpgrp (d_setpgrp.U):
858 This variable conditionally defines HAS_SETPGRP if setpgrp() is
859 available to set the current process group.
860
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861d_setprior (d_setprior.U):
862 This variable conditionally defines HAS_SETPRIORITY if setpriority()
863 is available to set a process's priority.
864
865d_setregid (d_setregid.U):
866 This variable conditionally defines HAS_SETREGID if setregid() is
867 available to change the real and effective gid of the current
868 process.
869
870d_setresgid (d_setregid.U):
871 This variable conditionally defines HAS_SETRESGID if setresgid() is
872 available to change the real, effective and saved gid of the current
873 process.
874
875d_setresuid (d_setreuid.U):
876 This variable conditionally defines HAS_SETREUID if setresuid() is
877 available to change the real, effective and saved uid of the current
878 process.
879
880d_setreuid (d_setreuid.U):
881 This variable conditionally defines HAS_SETREUID if setreuid() is
882 available to change the real and effective uid of the current
883 process.
884
885d_setrgid (d_setrgid.U):
886 This variable conditionally defines the HAS_SETRGID symbol, which
887 indicates to the C program that the setrgid() routine is available
888 to change the real gid of the current program.
889
890d_setruid (d_setruid.U):
891 This variable conditionally defines the HAS_SETRUID symbol, which
892 indicates to the C program that the setruid() routine is available
893 to change the real uid of the current program.
894
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895d_setsent (d_setsent.U):
896 This variable conditionally defines HAS_SETSERVENT if setservent() is
897 available.
898
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899d_setsid (d_setsid.U):
900 This variable conditionally defines HAS_SETSID if setsid() is
901 available to set the process group ID.
902
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903d_setvbuf (d_setvbuf.U):
904 This variable conditionally defines the HAS_SETVBUF symbol, which
905 indicates to the C program that the setvbuf() routine is available
906 to change buffering on an open stdio stream.
907
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908d_sfio (d_sfio.U):
909 This variable conditionally defines the USE_SFIO symbol,
910 and indicates whether sfio is available (and should be used).
911
912d_shm (d_shm.U):
913 This variable conditionally defines the HAS_SHM symbol, which
914 indicates that the entire shm*(2) library is present.
915
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916d_shmat (d_shmat.U):
917 This variable conditionally defines the HAS_SHMAT symbol, which
918 indicates to the C program that the shmat() routine is available.
919
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920d_shmatprototype (d_shmat.U):
921 This variable conditionally defines the HAS_SHMAT_PROTOTYPE
922 symbol, which indicates that sys/shm.h has a prototype for
923 shmat.
924
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925d_shmctl (d_shmctl.U):
926 This variable conditionally defines the HAS_SHMCTL symbol, which
927 indicates to the C program that the shmctl() routine is available.
928
929d_shmdt (d_shmdt.U):
930 This variable conditionally defines the HAS_SHMDT symbol, which
931 indicates to the C program that the shmdt() routine is available.
932
933d_shmget (d_shmget.U):
934 This variable conditionally defines the HAS_SHMGET symbol, which
935 indicates to the C program that the shmget() routine is available.
936
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PP
937d_sigaction (d_sigaction.U):
938 This variable conditionally defines the HAS_SIGACTION symbol, which
939 indicates that the Vr4 sigaction() routine is available.
940
941d_sigsetjmp (d_sigsetjmp.U):
942 This variable conditionally defines the HAS_SIGSETJMP symbol,
943 which indicates that the sigsetjmp() routine is available to
944 call setjmp() and optionally save the process's signal mask.
945
946d_socket (d_socket.U):
947 This variable conditionally defines HAS_SOCKET, which indicates
948 that the BSD socket interface is supported.
949
950d_sockpair (d_socket.U):
951 This variable conditionally defines the HAS_SOCKETPAIR symbol, which
952 indicates that the BSD socketpair() is supported.
953
954d_statblks (d_statblks.U):
955 This variable conditionally defines USE_STAT_BLOCKS if this system
956 has a stat structure declaring st_blksize and st_blocks.
957
958d_stdio_cnt_lval (d_stdstdio.U):
959 This variable conditionally defines STDIO_CNT_LVALUE if the
960 FILE_cnt macro can be used as an lvalue.
961
962d_stdio_ptr_lval (d_stdstdio.U):
963 This variable conditionally defines STDIO_PTR_LVALUE if the
964 FILE_ptr macro can be used as an lvalue.
965
966d_stdiobase (d_stdstdio.U):
967 This variable conditionally defines USE_STDIO_BASE if this system
968 has a FILE structure declaring a usable _base field (or equivalent)
969 in stdio.h.
970
971d_stdstdio (d_stdstdio.U):
972 This variable conditionally defines USE_STDIO_PTR if this system
973 has a FILE structure declaring usable _ptr and _cnt fields (or
974 equivalent) in stdio.h.
975
976d_strchr (d_strchr.U):
977 This variable conditionally defines HAS_STRCHR if strchr() and
978 strrchr() are available for string searching.
979
980d_strcoll (d_strcoll.U):
981 This variable conditionally defines HAS_STRCOLL if strcoll() is
982 available to compare strings using collating information.
983
984d_strctcpy (d_strctcpy.U):
985 This variable conditionally defines the USE_STRUCT_COPY symbol, which
986 indicates to the C program that this C compiler knows how to copy
987 structures.
988
989d_strerrm (d_strerror.U):
990 This variable holds what Strerrr is defined as to translate an error
991 code condition into an error message string. It could be 'strerror'
992 or a more complex macro emulating strrror with sys_errlist[], or the
993 "unknown" string when both strerror and sys_errlist are missing.
994
995d_strerror (d_strerror.U):
996 This variable conditionally defines HAS_STRERROR if strerror() is
997 available to translate error numbers to strings.
998
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999d_strtod (d_strtod.U):
1000 This variable conditionally defines the HAS_STRTOD symbol, which
1001 indicates to the C program that the strtod() routine is available
1002 to provide better numeric string conversion than atof().
1003
1004d_strtol (d_strtol.U):
1005 This variable conditionally defines the HAS_STRTOL symbol, which
1006 indicates to the C program that the strtol() routine is available
1007 to provide better numeric string conversion than atoi() and friends.
1008
1009d_strtoul (d_strtoul.U):
1010 This variable conditionally defines the HAS_STRTOUL symbol, which
1011 indicates to the C program that the strtoul() routine is available
1012 to provide conversion of strings to unsigned long.
1013
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PP
1014d_strxfrm (d_strxfrm.U):
1015 This variable conditionally defines HAS_STRXFRM if strxfrm() is
1016 available to transform strings.
1017
1018d_suidsafe (d_dosuid.U):
1019 This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
1020 if setuid scripts can be secure. This test looks in /dev/fd/.
1021
1022d_symlink (d_symlink.U):
1023 This variable conditionally defines the HAS_SYMLINK symbol, which
1024 indicates to the C program that the symlink() routine is available
1025 to create symbolic links.
1026
1027d_syscall (d_syscall.U):
1028 This variable conditionally defines HAS_SYSCALL if syscall() is
1029 available call arbitrary system calls.
1030
1031d_sysconf (d_sysconf.U):
1032 This variable conditionally defines the HAS_SYSCONF symbol, which
1033 indicates to the C program that the sysconf() routine is available
1034 to determine system related limits and options.
1035
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1036d_sysernlst (d_strerror.U):
1037 This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
1038 is available to translate error numbers to the symbolic name.
1039
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PP
1040d_syserrlst (d_strerror.U):
1041 This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
1042 available to translate error numbers to strings.
1043
1044d_system (d_system.U):
1045 This variable conditionally defines HAS_SYSTEM if system() is
1046 available to issue a shell command.
1047
1048d_tcgetpgrp (d_tcgtpgrp.U):
1049 This variable conditionally defines the HAS_TCGETPGRP symbol, which
1050 indicates to the C program that the tcgetpgrp() routine is available.
1051 to get foreground process group ID.
1052
1053d_tcsetpgrp (d_tcstpgrp.U):
1054 This variable conditionally defines the HAS_TCSETPGRP symbol, which
1055 indicates to the C program that the tcsetpgrp() routine is available
1056 to set foreground process group ID.
1057
1058d_telldir (d_readdir.U):
1059 This variable conditionally defines HAS_TELLDIR if telldir() is
1060 available.
1061
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1062d_time (d_time.U):
1063 This variable conditionally defines the HAS_TIME symbol, which indicates
1064 that the time() routine exists. The time() routine is normaly
1065 provided on UNIX systems.
1066
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PP
1067d_times (d_times.U):
1068 This variable conditionally defines the HAS_TIMES symbol, which indicates
1069 that the times() routine exists. The times() routine is normaly
1070 provided on UNIX systems. You may have to include <sys/times.h>.
1071
1072d_truncate (d_truncate.U):
1073 This variable conditionally defines HAS_TRUNCATE if truncate() is
1074 available to truncate files.
1075
1076d_tzname (d_tzname.U):
1077 This variable conditionally defines HAS_TZNAME if tzname[] is
1078 available to access timezone names.
1079
1080d_umask (d_umask.U):
1081 This variable conditionally defines the HAS_UMASK symbol, which
1082 indicates to the C program that the umask() routine is available.
1083 to set and get the value of the file creation mask.
1084
1085d_uname (d_gethname.U):
1086 This variable conditionally defines the HAS_UNAME symbol, which
1087 indicates to the C program that the uname() routine may be
1088 used to derive the host name.
1089
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1090d_union_semun (d_union_senum.U):
1091 This variable conditionally defines HAS_UNION_SEMUN if the
1092 union semun is defined by including <sys/sem.h>.
1093
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PP
1094d_vfork (d_vfork.U):
1095 This variable conditionally defines the HAS_VFORK symbol, which
1096 indicates the vfork() routine is available.
1097
1098d_void_closedir (d_closedir.U):
1099 This variable conditionally defines VOID_CLOSEDIR if closedir()
1100 does not return a value.
1101
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1102d_voidsig (d_voidsig.U):
1103 This variable conditionally defines VOIDSIG if this system
1104 declares "void (*signal(...))()" in signal.h. The old way was to
1105 declare it as "int (*signal(...))()".
1106
1107d_voidtty (i_sysioctl.U):
1108 This variable conditionally defines USE_IOCNOTTY to indicate that the
1109 ioctl() call with TIOCNOTTY should be used to void tty association.
1110 Otherwise (on USG probably), it is enough to close the standard file
1111 decriptors and do a setpgrp().
1112
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PP
1113d_volatile (d_volatile.U):
1114 This variable conditionally defines the HASVOLATILE symbol, which
1115 indicates to the C program that this C compiler knows about the
1116 volatile declaration.
1117
1118d_vprintf (d_vprintf.U):
1119 This variable conditionally defines the HAS_VPRINTF symbol, which
1120 indicates to the C program that the vprintf() routine is available
1121 to printf with a pointer to an argument list.
1122
1123d_wait4 (d_wait4.U):
1124 This variable conditionally defines the HAS_WAIT4 symbol, which
1125 indicates the wait4() routine is available.
1126
1127d_waitpid (d_waitpid.U):
1128 This variable conditionally defines HAS_WAITPID if waitpid() is
1129 available to wait for child process.
1130
1131d_wcstombs (d_wcstombs.U):
1132 This variable conditionally defines the HAS_WCSTOMBS symbol, which
1133 indicates to the C program that the wcstombs() routine is available
1134 to convert wide character strings to multibyte strings.
1135
1136d_wctomb (d_wctomb.U):
1137 This variable conditionally defines the HAS_WCTOMB symbol, which
1138 indicates to the C program that the wctomb() routine is available
1139 to convert a wide character to a multibyte.
1140
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1141d_xenix (Guess.U):
1142 This variable conditionally defines the symbol XENIX, which alerts
1143 the C program that it runs under Xenix.
1144
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PP
1145db_hashtype (i_db.U):
1146 This variable contains the type of the hash structure element
1147 in the <db.h> header file. In older versions of DB, it was
1148 int, while in newer ones it is u_int32_t.
1149
1150db_prefixtype (i_db.U):
1151 This variable contains the type of the prefix structure element
1152 in the <db.h> header file. In older versions of DB, it was
1153 int, while in newer ones it is size_t.
1154
1155direntrytype (i_dirent.U):
1156 This symbol is set to 'struct direct' or 'struct dirent' depending on
1157 whether dirent is available or not. You should use this pseudo type to
1158 portably declare your directory entries.
1159
1160dlext (dlext.U):
1161 This variable contains the extension that is to be used for the
1162 dynamically loaded modules that perl generaties.
1163
1164dlsrc (dlsrc.U):
1165 This variable contains the name of the dynamic loading file that
1166 will be used with the package.
1167
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1168doublesize (doublesize.U):
1169 This variable contains the value of the DOUBLESIZE symbol, which
1170 indicates to the C program how many bytes there are in a double.
1171
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PP
1172dynamic_ext (Extensions.U):
1173 This variable holds a list of extension files we want to
1174 link dynamically into the package. It is used by Makefile.
1175
1176eagain (nblock_io.U):
1177 This variable bears the symbolic errno code set by read() when no
1178 data is present on the file and non-blocking I/O was enabled (otherwise,
1179 read() blocks naturally).
1180
1181eunicefix (Init.U):
1182 When running under Eunice this variable contains a command which will
1183 convert a shell script to the proper form of text file for it to be
1184 executable by the shell. On other systems it is a no-op.
1185
1186exe_ext (Unix.U):
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1187 This is an old synonym for _exe.
1188
1189extensions (Extensions.U):
1190 This variable holds a list of all extension files
1191 linked into the package. It is propagated to Config.pm
1192 and is typically used to test whether a particular extesion
1193 is available.
d7418ba7
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1194
1195firstmakefile (Unix.U):
1196 This variable defines the first file searched by make. On unix,
1197 it is makefile (then Makefile). On case-insensitive systems,
1198 it might be something else. This is only used to deal with
1199 convoluted make depend tricks.
1200
1201fpostype (fpostype.U):
1202 This variable defines Fpos_t to be something like fpost_t, long,
1203 uint, or whatever type is used to declare file positions in libc.
1204
1205freetype (mallocsrc.U):
1206 This variable contains the return type of free(). It is usually
1207 void, but occasionally int.
1208
1209full_csh (d_csh.U):
1210 This variable contains the full pathname to 'csh', whether or
1211 not the user has specified 'portability'. This is only used
1212 in the compiled C program, and we assume that all systems which
1213 can share this executable will have the same full pathname to
1214 'csh.'
1215
1216full_sed (Loc_sed.U):
1217 This variable contains the full pathname to 'sed', whether or
1218 not the user has specified 'portability'. This is only used
1219 in the compiled C program, and we assume that all systems which
1220 can share this executable will have the same full pathname to
1221 'sed.'
1222
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1223gccversion (cc.U):
1224 If GNU cc (gcc) is used, this variable holds '1' or '2' to
1225 indicate whether the compiler is version 1 or 2. This is used in
1226 setting some of the default cflags. It is set to '' if not gcc.
1227
d7418ba7
PP
1228gidtype (gidtype.U):
1229 This variable defines Gid_t to be something like gid_t, int,
1230 ushort, or whatever type is used to declare the return type
1231 of getgid(). Typically, it is the type of group ids in the kernel.
1232
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1233groupcat (nis.U):
1234 This variable contains a command that produces the text of the
1235 /etc/group file. This is normally "cat /etc/group", but can be
1236 "ypcat group" when NIS is used.
1237
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PP
1238groupstype (groupstype.U):
1239 This variable defines Groups_t to be something like gid_t, int,
1240 ushort, or whatever type is used for the second argument to
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AD
1241 getgroups() and setgroups(). Usually, this is the same as
1242 gidtype (gid_t), but sometimes it isn't.
1243
1244h_fcntl (h_fcntl.U):
1245 This is variable gets set in various places to tell i_fcntl that
1246 <fcntl.h> should be included.
1247
1248h_sysfile (h_sysfile.U):
1249 This is variable gets set in various places to tell i_sys_file that
1250 <sys/file.h> should be included.
1251
1252hint (Oldconfig.U):
1253 Gives the type of hints used for previous answers. May be one of
1254 "default", "recommended" or "previous".
1255
1256hostcat (nis.U):
1257 This variable contains a command that produces the text of the
1258 /etc/hosts file. This is normally "cat /etc/hosts", but can be
1259 "ypcat hosts" when NIS is used.
1260
1261huge (models.U):
1262 This variable contains a flag which will tell the C compiler and loader
1263 to produce a program running with a huge memory model. If the
1264 huge model is not supported, contains the flag to produce large
1265 model programs. It is up to the Makefile to use this.
1266
1267i_bsdioctl (i_sysioctl.U):
1268 This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
1269 indicates to the C program that <sys/bsdioctl.h> exists and should
1270 be included.
1271
1272i_db (i_db.U):
1273 This variable conditionally defines the I_DB symbol, and indicates
1274 whether a C program may include Berkeley's DB include file <db.h>.
d7418ba7 1275
dc45a647
MB
1276i_dbm (i_dbm.U):
1277 This variable conditionally defines the I_DBM symbol, which
1278 indicates to the C program that <dbm.h> exists and should
1279 be included.
1280
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PP
1281i_dirent (i_dirent.U):
1282 This variable conditionally defines I_DIRENT, which indicates
1283 to the C program that it should include <dirent.h>.
1284
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1285i_dld (i_dld.U):
1286 This variable conditionally defines the I_DLD symbol, which
1287 indicates to the C program that <dld.h> (GNU dynamic loading)
1288 exists and should be included.
1289
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PP
1290i_dlfcn (i_dlfcn.U):
1291 This variable conditionally defines the I_DLFCN symbol, which
1292 indicates to the C program that <dlfcn.h> exists and should
1293 be included.
1294
1295i_fcntl (i_fcntl.U):
1296 This variable controls the value of I_FCNTL (which tells
1297 the C program to include <fcntl.h>).
1298
1299i_float (i_float.U):
1300 This variable conditionally defines the I_FLOAT symbol, and indicates
1301 whether a C program may include <float.h> to get symbols like DBL_MAX
1302 or DBL_MIN, i.e. machine dependent floating point values.
1303
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MB
1304i_gdbm (i_gdbm.U):
1305 This variable conditionally defines the I_GDBM symbol, which
1306 indicates to the C program that <gdbm.h> exists and should
1307 be included.
1308
d7418ba7
PP
1309i_grp (i_grp.U):
1310 This variable conditionally defines the I_GRP symbol, and indicates
1311 whether a C program should include <grp.h>.
1312
1313i_limits (i_limits.U):
1314 This variable conditionally defines the I_LIMITS symbol, and indicates
1315 whether a C program may include <limits.h> to get symbols like WORD_BIT
1316 and friends.
1317
1318i_locale (i_locale.U):
1319 This variable conditionally defines the I_LOCALE symbol,
1320 and indicates whether a C program should include <locale.h>.
1321
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1322i_malloc (i_malloc.U):
1323 This variable conditionally defines the I_MALLOC symbol, and indicates
1324 whether a C program should include <malloc.h>.
1325
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PP
1326i_math (i_math.U):
1327 This variable conditionally defines the I_MATH symbol, and indicates
1328 whether a C program may include <math.h>.
1329
1330i_memory (i_memory.U):
1331 This variable conditionally defines the I_MEMORY symbol, and indicates
1332 whether a C program should include <memory.h>.
1333
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MB
1334i_ndbm (i_ndbm.U):
1335 This variable conditionally defines the I_NDBM symbol, which
1336 indicates to the C program that <ndbm.h> exists and should
1337 be included.
1338
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1339i_netdb (i_netdb.U):
1340 This variable conditionally defines the I_NETDB symbol, and indicates
1341 whether a C program should include <netdb.h>.
1342
d7418ba7
PP
1343i_neterrno (i_neterrno.U):
1344 This variable conditionally defines the I_NET_ERRNO symbol, which
1345 indicates to the C program that <net/errno.h> exists and should
1346 be included.
1347
1348i_niin (i_niin.U):
1349 This variable conditionally defines I_NETINET_IN, which indicates
1350 to the C program that it should include <netinet/in.h>. Otherwise,
1351 you may try <sys/in.h>.
1352
1353i_pwd (i_pwd.U):
1354 This variable conditionally defines I_PWD, which indicates
1355 to the C program that it should include <pwd.h>.
1356
1357i_rpcsvcdbm (i_dbm.U):
1358 This variable conditionally defines the I_RPCSVC_DBM symbol, which
1359 indicates to the C program that <rpcsvc/dbm.h> exists and should
1360 be included. Some System V systems might need this instead of <dbm.h>.
1361
1362i_sfio (i_sfio.U):
1363 This variable conditionally defines the I_SFIO symbol,
1364 and indicates whether a C program should include <sfio.h>.
1365
1366i_sgtty (i_termio.U):
1367 This variable conditionally defines the I_SGTTY symbol, which
1368 indicates to the C program that it should include <sgtty.h> rather
1369 than <termio.h>.
1370
1371i_stdarg (i_varhdr.U):
1372 This variable conditionally defines the I_STDARG symbol, which
1373 indicates to the C program that <stdarg.h> exists and should
1374 be included.
1375
1376i_stddef (i_stddef.U):
1377 This variable conditionally defines the I_STDDEF symbol, which
1378 indicates to the C program that <stddef.h> exists and should
1379 be included.
1380
1381i_stdlib (i_stdlib.U):
1382 This variable conditionally defines the I_STDLIB symbol, which
1383 indicates to the C program that <stdlib.h> exists and should
1384 be included.
1385
1386i_string (i_string.U):
1387 This variable conditionally defines the I_STRING symbol, which
1388 indicates that <string.h> should be included rather than <strings.h>.
1389
1390i_sysdir (i_sysdir.U):
1391 This variable conditionally defines the I_SYS_DIR symbol, and indicates
1392 whether a C program should include <sys/dir.h>.
1393
1394i_sysfile (i_sysfile.U):
1395 This variable conditionally defines the I_SYS_FILE symbol, and indicates
1396 whether a C program should include <sys/file.h> to get R_OK and friends.
1397
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1398i_sysfilio (i_sysioctl.U):
1399 This variable conditionally defines the I_SYS_FILIO symbol, which
1400 indicates to the C program that <sys/filio.h> exists and should
1401 be included in preference to <sys/ioctl.h>.
1402
1403i_sysin (i_niin.U):
1404 This variable conditionally defines I_SYS_IN, which indicates
1405 to the C program that it should include <sys/in.h> instead of
1406 <netinet/in.h>.
1407
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PP
1408i_sysioctl (i_sysioctl.U):
1409 This variable conditionally defines the I_SYS_IOCTL symbol, which
1410 indicates to the C program that <sys/ioctl.h> exists and should
1411 be included.
1412
1413i_sysndir (i_sysndir.U):
1414 This variable conditionally defines the I_SYS_NDIR symbol, and indicates
1415 whether a C program should include <sys/ndir.h>.
1416
1417i_sysparam (i_sysparam.U):
1418 This variable conditionally defines the I_SYS_PARAM symbol, and indicates
1419 whether a C program should include <sys/param.h>.
1420
1421i_sysresrc (i_sysresrc.U):
1422 This variable conditionally defines the I_SYS_RESOURCE symbol,
1423 and indicates whether a C program should include <sys/resource.h>.
1424
1425i_sysselct (i_sysselct.U):
1426 This variable conditionally defines I_SYS_SELECT, which indicates
1427 to the C program that it should include <sys/select.h> in order to
1428 get the definition of struct timeval.
1429
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AD
1430i_syssockio (i_sysioctl.U):
1431 This variable conditionally defines I_SYS_SOCKIO to indicate to the
1432 C program that socket ioctl codes may be found in <sys/sockio.h>
1433 instead of <sys/ioctl.h>.
1434
d7418ba7
PP
1435i_sysstat (i_sysstat.U):
1436 This variable conditionally defines the I_SYS_STAT symbol,
1437 and indicates whether a C program should include <sys/stat.h>.
1438
1439i_systime (i_time.U):
1440 This variable conditionally defines I_SYS_TIME, which indicates
1441 to the C program that it should include <sys/time.h>.
1442
1443i_systimek (i_time.U):
1444 This variable conditionally defines I_SYS_TIME_KERNEL, which
1445 indicates to the C program that it should include <sys/time.h>
1446 with KERNEL defined.
1447
1448i_systimes (i_systimes.U):
1449 This variable conditionally defines the I_SYS_TIMES symbol, and indicates
1450 whether a C program should include <sys/times.h>.
1451
1452i_systypes (i_systypes.U):
1453 This variable conditionally defines the I_SYS_TYPES symbol,
1454 and indicates whether a C program should include <sys/types.h>.
1455
1456i_sysun (i_sysun.U):
1457 This variable conditionally defines I_SYS_UN, which indicates
1458 to the C program that it should include <sys/un.h> to get UNIX
1459 domain socket definitions.
1460
1461i_syswait (i_syswait.U):
1462 This variable conditionally defines I_SYS_WAIT, which indicates
1463 to the C program that it should include <sys/wait.h>.
1464
1465i_termio (i_termio.U):
1466 This variable conditionally defines the I_TERMIO symbol, which
1467 indicates to the C program that it should include <termio.h> rather
1468 than <sgtty.h>.
1469
1470i_termios (i_termio.U):
1471 This variable conditionally defines the I_TERMIOS symbol, which
1472 indicates to the C program that the POSIX <termios.h> file is
1473 to be included.
1474
1475i_time (i_time.U):
1476 This variable conditionally defines I_TIME, which indicates
1477 to the C program that it should include <time.h>.
1478
1479i_unistd (i_unistd.U):
1480 This variable conditionally defines the I_UNISTD symbol, and indicates
1481 whether a C program should include <unistd.h>.
1482
1483i_utime (i_utime.U):
1484 This variable conditionally defines the I_UTIME symbol, and indicates
1485 whether a C program should include <utime.h>.
1486
1487i_values (i_values.U):
1488 This variable conditionally defines the I_VALUES symbol, and indicates
1489 whether a C program may include <values.h> to get symbols like MAXLONG
1490 and friends.
1491
1492i_varargs (i_varhdr.U):
1493 This variable conditionally defines I_VARARGS, which indicates
1494 to the C program that it should include <varargs.h>.
1495
1496i_varhdr (i_varhdr.U):
1497 Contains the name of the header to be included to get va_dcl definition.
1498 Typically one of varargs.h or stdarg.h.
1499
1500i_vfork (i_vfork.U):
1501 This variable conditionally defines the I_VFORK symbol, and indicates
1502 whether a C program should include vfork.h.
1503
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1504incpath (usrinc.U):
1505 This variable must preceed the normal include path to get hte
1506 right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
1507 Value can be "" or "/bsd43" on mips.
1508
1509installarchlib (archlib.U):
1510 This variable is really the same as archlibexp but may differ on
1511 those systems using AFS. For extra portability, only this variable
1512 should be used in makefiles.
1513
d7418ba7
PP
1514installbin (bin.U):
1515 This variable is the same as binexp unless AFS is running in which case
1516 the user is explicitely prompted for it. This variable should always
1517 be used in your makefiles for maximum portability.
1518
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1519installman1dir (man1dir.U):
1520 This variable is really the same as man1direxp, unless you are using
1521 AFS in which case it points to the read/write location whereas
1522 man1direxp only points to the read-only access location. For extra
1523 portability, you should only use this variable within your makefiles.
1524
1525installman3dir (man3dir.U):
1526 This variable is really the same as man3direxp, unless you are using
1527 AFS in which case it points to the read/write location whereas
1528 man3direxp only points to the read-only access location. For extra
1529 portability, you should only use this variable within your makefiles.
1530
d7418ba7
PP
1531installprivlib (privlib.U):
1532 This variable is really the same as privlibexp but may differ on
1533 those systems using AFS. For extra portability, only this variable
1534 should be used in makefiles.
1535
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1536installscript (scriptdir.U):
1537 This variable is usually the same as scriptdirexp, unless you are on
1538 a system running AFS, in which case they may differ slightly. You
1539 should always use this variable within your makefiles for portability.
1540
1541installsitearch (sitearch.U):
1542 This variable is really the same as sitearchexp but may differ on
1543 those systems using AFS. For extra portability, only this variable
1544 should be used in makefiles.
1545
1546installsitelib (sitelib.U):
1547 This variable is really the same as sitelibexp but may differ on
1548 those systems using AFS. For extra portability, only this variable
1549 should be used in makefiles.
1550
d7418ba7 1551intsize (intsize.U):
dfe9444c
AD
1552 This variable contains the value of the INTSIZE symbol, which
1553 indicates to the C program how many bytes there are in an int.
1554
1555known_extensions (Extensions.U):
1556 This variable holds a list of all extensions included in
1557 the package.
d7418ba7
PP
1558
1559large (models.U):
1560 This variable contains a flag which will tell the C compiler and loader
1561 to produce a program running with a large memory model. It is up to
1562 the Makefile to use this.
1563
1564ld (dlsrc.U):
1565 This variable indicates the program to be used to link
1566 libraries for dynamic loading. On some systems, it is 'ld'.
1567 On ELF systems, it should be $cc. Mostly, we'll try to respect
1568 the hint file setting.
1569
1570lddlflags (dlsrc.U):
1571 This variable contains any special flags that might need to be
1572 passed to $ld to create a shared library suitable for dynamic
1573 loading. It is up to the makefile to use it. For hpux, it
1574 should be -b. For sunos 4.1, it is empty.
1575
1576ldflags (ccflags.U):
1577 This variable contains any additional C loader flags desired by
1578 the user. It is up to the Makefile to use this.
1579
1580lib_ext (Unix.U):
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AD
1581 This is an old synonym for _a.
1582
1583libc (libc.U):
1584 This variable contains the location of the C library.
d7418ba7
PP
1585
1586libperl (libperl.U):
1587 The perl executable is obtained by linking perlmain.c with
1588 libperl, any static extensions (usually just DynaLoader),
1589 and any other libraries needed on this system. libperl
1590 is usually libperl.a, but can also be libperl.so.xxx if
1591 the user wishes to build a perl executable with a shared
1592 library.
1593
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AD
1594libpth (libpth.U):
1595 This variable holds the general path used to find libraries. It is
1596 intended to be used by other units.
1597
d7418ba7
PP
1598libs (libs.U):
1599 This variable holds the additional libraries we want to use.
1600 It is up to the Makefile to deal with it.
1601
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AD
1602libswanted (Myinit.U):
1603 This variable holds a list of all the libraries we want to
1604 search. The order is chosen to pick up the c library
1605 ahead of ucb or bsd libraries for SVR4.
1606
1607lkflags (ccflags.U):
1608 This variable contains any additional C partial linker flags desired by
1609 the user. It is up to the Makefile to use this.
1610
d7418ba7
PP
1611lns (lns.U):
1612 This variable holds the name of the command to make
1613 symbolic links (if they are supported). It can be used
1614 in the Makefile. It is either 'ln -s' or 'ln'
1615
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1616locincpth (ccflags.U):
1617 This variable contains a list of additional directories to be
1618 searched by the compiler. The appropriate -I directives will
1619 be added to ccflags. This is intended to simplify setting
1620 local directories from the Configure command line.
1621 It's not much, but it parallels the loclibpth stuff in libpth.U.
1622
1623loclibpth (libpth.U):
1624 This variable holds the paths used to find local libraries. It is
1625 prepended to libpth, and is intended to be easily set from the
1626 command line.
1627
e5c9fcd0
AD
1628longdblsize (d_longdbl.U):
1629 This variable contains the value of the LONG_DOUBLESIZE symbol, which
1630 indicates to the C program how many bytes there are in a long double,
1631 if this system supports long doubles.
1632
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MB
1633longlongsize (d_longlong.U):
1634 This variable contains the value of the LONGLONGSIZE symbol, which
1635 indicates to the C program how many bytes there are in a long long,
1636 if this system supports long long.
1637
4fdae800 1638longsize (intsize.U):
dfe9444c
AD
1639 This variable contains the value of the LONGSIZE symbol, which
1640 indicates to the C program how many bytes there are in a long.
4fdae800 1641
d7418ba7
PP
1642lseektype (lseektype.U):
1643 This variable defines lseektype to be something like off_t, long,
1644 or whatever type is used to declare lseek offset's type in the
1645 kernel (which also appears to be lseek's return type).
1646
d7418ba7
PP
1647make_set_make (make.U):
1648 Some versions of 'make' set the variable MAKE. Others do not.
1649 This variable contains the string to be included in Makefile.SH
1650 so that MAKE is set if needed, and not if not needed.
1651 Possible values are:
dfe9444c
AD
1652 make_set_make='#' # If your make program handles this for you,
1653 make_set_make="MAKE=$make" # if it doesn't.
d7418ba7
PP
1654 I used a comment character so that we can distinguish a
1655 'set' value (from a previous config.sh or Configure -D option)
1656 from an uncomputed value.
1657
1658mallocobj (mallocsrc.U):
1659 This variable contains the name of the malloc.o that this package
1660 generates, if that malloc.o is preferred over the system malloc.
1661 Otherwise the value is null. This variable is intended for generating
1662 Makefiles. See mallocsrc.
1663
1664mallocsrc (mallocsrc.U):
1665 This variable contains the name of the malloc.c that comes with
1666 the package, if that malloc.c is preferred over the system malloc.
1667 Otherwise the value is null. This variable is intended for generating
1668 Makefiles.
1669
1670malloctype (mallocsrc.U):
1671 This variable contains the kind of ptr returned by malloc and realloc.
1672
1673man1dir (man1dir.U):
1674 This variable contains the name of the directory in which manual
1675 source pages are to be put. It is the responsibility of the
1676 Makefile.SH to get the value of this into the proper command.
1677 You must be prepared to do the ~name expansion yourself.
1678
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1679man1direxp (man1dir.U):
1680 This variable is the same as the man1dir variable, but is filename
1681 expanded at configuration time, for convenient use in makefiles.
1682
d7418ba7
PP
1683man1ext (man1dir.U):
1684 This variable contains the extension that the manual page should
1685 have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
1686 See man1dir.
1687
1688man3dir (man3dir.U):
1689 This variable contains the name of the directory in which manual
1690 source pages are to be put. It is the responsibility of the
1691 Makefile.SH to get the value of this into the proper command.
1692 You must be prepared to do the ~name expansion yourself.
1693
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1694man3direxp (man3dir.U):
1695 This variable is the same as the man3dir variable, but is filename
1696 expanded at configuration time, for convenient use in makefiles.
1697
d7418ba7
PP
1698man3ext (man3dir.U):
1699 This variable contains the extension that the manual page should
1700 have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
1701 See man3dir.
1702
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AD
1703medium (models.U):
1704 This variable contains a flag which will tell the C compiler and loader
1705 to produce a program running with a medium memory model. If the
1706 medium model is not supported, contains the flag to produce large
1707 model programs. It is up to the Makefile to use this.
1708
1709mips_type (usrinc.U):
1710 This variable holds the environment type for the mips system.
1711 Possible values are "BSD 4.3" and "System V".
1712
1713models (models.U):
1714 This variable contains the list of memory models supported by this
1715 system. Possible component values are none, split, unsplit, small,
1716 medium, large, and huge. The component values are space separated.
1717
d7418ba7
PP
1718modetype (modetype.U):
1719 This variable defines modetype to be something like mode_t,
1720 int, unsigned short, or whatever type is used to declare file
1721 modes for system calls.
1722
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1723myarchname (archname.U):
1724 This variable holds the architecture name computed by Configure in
1725 a previous run. It is not intended to be perused by any user and
1726 should never be set in a hint file.
1727
1728mydomain (myhostname.U):
1729 This variable contains the eventual value of the MYDOMAIN symbol,
1730 which is the domain of the host the program is going to run on.
1731 The domain must be appended to myhostname to form a complete host name.
1732 The dot comes with mydomain, and need not be supplied by the program.
1733
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1734myhostname (myhostname.U):
1735 This variable contains the eventual value of the MYHOSTNAME symbol,
1736 which is the name of the host the program is going to run on.
1737 The domain is not kept with hostname, but must be gotten from mydomain.
1738 The dot comes with mydomain, and need not be supplied by the program.
1739
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1740myuname (Oldconfig.U):
1741 The output of 'uname -a' if available, otherwise the hostname. On Xenix,
1742 pseudo variables assignments in the output are stripped, thank you. The
1743 whole thing is then lower-cased.
1744
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1745n (n.U):
1746 This variable contains the -n flag if that is what causes the echo
1747 command to suppress newline. Otherwise it is null. Correct usage is
1748 $echo $n "prompt for a question: $c".
1749
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1750netdb_hlen_type (netdbtype.U):
1751 This variable holds the type used for the 2nd argument to
1752 gethostbyaddr(). Usually, this is int or size_t or unsigned.
1753 This is only useful if you have gethostbyaddr(), naturally.
1754
1755netdb_host_type (netdbtype.U):
1756 This variable holds the type used for the 1st argument to
1757 gethostbyaddr(). Usually, this is char * or void *, possibly
1758 with or without a const prefix.
1759 This is only useful if you have gethostbyaddr(), naturally.
1760
1761netdb_name_type (netdbtype.U):
1762 This variable holds the type used for the argument to
1763 gethostbyname(). Usually, this is char * or const char *.
1764 This is only useful if you have gethostbyname(), naturally.
1765
1766netdb_net_type (netdbtype.U):
1767 This variable holds the type used for the 1st argument to
1768 getnetbyaddr(). Usually, this is int or long.
1769 This is only useful if you have getnetbyaddr(), naturally.
1770
1771nm_opt (usenm.U):
1772 This variable holds the options that may be necessary for nm.
1773
1774nm_so_opt (usenm.U):
1775 This variable holds the options that may be necessary for nm
1776 to work on a shared library but that can not be used on an
1777 archive library. Currently, this is only used by Linux, where
1778 nm --dynamic is *required* to get symbols from an ELF library which
1779 has been stripped, but nm --dynamic is *fatal* on an archive library.
1780 Maybe Linux should just always set usenm=false.
1781
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1782o_nonblock (nblock_io.U):
1783 This variable bears the symbol value to be used during open() or fcntl()
1784 to turn on non-blocking I/O for a file descriptor. If you wish to switch
1785 between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
1786 but that is only supported by some devices.
1787
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1788obj_ext (Unix.U):
1789 This is an old synonym for _o.
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1790
1791optimize (ccflags.U):
1792 This variable contains any optimizer/debugger flag that should be used.
1793 It is up to the Makefile to use it.
1794
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1795orderlib (orderlib.U):
1796 This variable is "true" if the components of libraries must be ordered
1797 (with `lorder $* | tsort`) before placing them in an archive. Set to
1798 "false" if ranlib or ar can generate random libraries.
1799
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1800osname (Oldconfig.U):
1801 This variable contains the operating system name (e.g. sunos,
1802 solaris, hpux, etc.). It can be useful later on for setting
1803 defaults. Any spaces are replaced with underscores. It is set
1804 to a null string if we can't figure it out.
1805
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1806osvers (Oldconfig.U):
1807 This variable contains the operating system version (e.g.
1808 4.1.3, 5.2, etc.). It is primarily used for helping select
1809 an appropriate hints file, but might be useful elsewhere for
1810 setting defaults. It is set to '' if we can't figure it out.
1811 We try to be flexible about how much of the version number
1812 to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
1813 same for this package, hints files might just be os_4.0 or
1814 os_4.1, etc., not keeping separate files for each little release.
1815
1816package (package.U):
1817 This variable contains the name of the package being constructed.
1818 It is primarily intended for the use of later Configure units.
1819
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1820pager (pager.U):
1821 This variable contains the name of the preferred pager on the system.
1822 Usual values are (the full pathnames of) more, less, pg, or cat.
1823
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1824passcat (nis.U):
1825 This variable contains a command that produces the text of the
1826 /etc/passwd file. This is normally "cat /etc/passwd", but can be
1827 "ypcat passwd" when NIS is used.
1828
1829patchlevel (patchlevel.U):
1830 The patchlevel level of this package.
1831 The value of patchlevel comes from the patchlevel.h file.
1832
d7418ba7 1833path_sep (Unix.U):
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1834 This is an old synonym for p_ in Head.U, the character
1835 used to separate elements in the command shell search PATH.
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1836
1837perladmin (perladmin.U):
1838 Electronic mail address of the perl5 administrator.
1839
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PP
1840perlpath (perlpath.U):
1841 This variable contains the eventual value of the PERLPATH symbol,
1842 which contains the name of the perl interpreter to be used in
1843 shell scripts and in the "eval 'exec'" idiom.
1844
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1845phostname (myhostname.U):
1846 This variable contains the eventual value of the PHOSTNAME symbol,
1847 which is a command that can be fed to popen() to get the host name.
1848 The program should probably not presume that the domain is or isn't
1849 there already.
1850
1851pidtype (pidtype.U):
1852 This variable defines PIDTYPE to be something like pid_t, int,
1853 ushort, or whatever type is used to declare process ids in the kernel.
1854
1855plibpth (libpth.U):
1856 Holds the private path used by Configure to find out the libraries.
1857 Its value is prepend to libpth. This variable takes care of special
1858 machines, like the mips. Usually, it should be empty.
1859
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1860prefix (prefix.U):
1861 This variable holds the name of the directory below which the
1862 user will install the package. Usually, this is /usr/local, and
1863 executables go in /usr/local/bin, library stuff in /usr/local/lib,
1864 man pages in /usr/local/man, etc. It is only used to set defaults
1865 for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
1866
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1867prefixexp (prefix.U):
1868 This variable holds the full absolute path of the directory below
1869 which the user will install the package. Derived from prefix.
1870
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1871privlib (privlib.U):
1872 This variable contains the eventual value of the PRIVLIB symbol,
1873 which is the name of the private library for this package. It may
1874 have a ~ on the front. It is up to the makefile to eventually create
1875 this directory while performing installation (with ~ substitution).
1876
1877privlibexp (privlib.U):
1878 This variable is the ~name expanded version of privlib, so that you
1879 may use it directly in Makefiles or shell scripts.
1880
1881prototype (prototype.U):
1882 This variable holds the eventual value of CAN_PROTOTYPE, which
1883 indicates the C compiler can handle funciton prototypes.
1884
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1885ptrsize (ptrsize.U):
1886 This variable contains the value of the PTRSIZE symbol, which
1887 indicates to the C program how many bytes there are in a pointer.
1888
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PP
1889randbits (randbits.U):
1890 This variable contains the eventual value of the RANDBITS symbol,
1891 which indicates to the C program how many bits of random number
1892 the rand() function produces.
1893
1894ranlib (orderlib.U):
1895 This variable is set to the pathname of the ranlib program, if it is
1896 needed to generate random libraries. Set to ":" if ar can generate
1897 random libraries or if random libraries are not supported
1898
1899rd_nodata (nblock_io.U):
1900 This variable holds the return code from read() when no data is
1901 present. It should be -1, but some systems return 0 when O_NDELAY is
1902 used, which is a shame because you cannot make the difference between
1903 no data and an EOF.. Sigh!
1904
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1905runnm (usenm.U):
1906 This variable contains 'true' or 'false' depending whether the
1907 nm extraction should be performed or not, according to the value
1908 of usenm and the flags on the Configure command line.
1909
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1910scriptdir (scriptdir.U):
1911 This variable holds the name of the directory in which the user wants
1912 to put publicly scripts for the package in question. It is either
1913 the same directory as for binaries, or a special one that can be
1914 mounted across different architectures, like /usr/share. Programs
1915 must be prepared to deal with ~name expansion.
1916
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1917scriptdirexp (scriptdir.U):
1918 This variable is the same as scriptdir, but is filename expanded
1919 at configuration time, for programs not wanting to bother with it.
1920
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1921selecttype (selecttype.U):
1922 This variable holds the type used for the 2nd, 3rd, and 4th
1923 arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
1924 is defined, and 'int *' otherwise. This is only useful if you
1925 have select(), naturally.
1926
1927sh (sh.U):
1928 This variable contains the full pathname of the shell used
1929 on this system to execute Bourne shell scripts. Usually, this will be
1930 /bin/sh, though it's possible that some systems will have /bin/ksh,
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PP
1931 /bin/pdksh, /bin/ash, /bin/bash, or even something such as
1932 D:/bin/sh.exe.
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1933 This unit comes before Options.U, so you can't set sh with a -D
1934 option, though you can override this (and startsh)
1935 with -O -Dsh=/bin/whatever -Dstartsh=whatever
1936
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1937sharpbang (spitshell.U):
1938 This variable contains the string #! if this system supports that
1939 construct.
1940
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1941shmattype (d_shmat.U):
1942 This symbol contains the type of pointer returned by shmat().
1943 It can be 'void *' or 'char *'.
1944
4fdae800 1945shortsize (intsize.U):
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1946 This variable contains the value of the SHORTSIZE symbol which
1947 indicates to the C program how many bytes there are in a short.
4fdae800 1948
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PP
1949shrpenv (libperl.U):
1950 If the user builds a shared libperl.so, then we need to tell the
1951 'perl' executable where it will be able to find the installed libperl.so.
1952 One way to do this on some systems is to set the environment variable
1953 LD_RUN_PATH to the directory that will be the final location of the
1954 shared libperl.so. The makefile can use this with something like
1955 $shrpenv $(CC) -o perl perlmain.o $libperl $libs
1956 Typical values are
1957 shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
1958 or
1959 shrpenv=''
1960 See the main perl Makefile.SH for actual working usage.
1961 Alternatively, we might be able to use a command line option such
1962 as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
1963 $archlibexp/CORE (Linux).
1964
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1965shsharp (spitshell.U):
1966 This variable tells further Configure units whether your sh can
1967 handle # comments.
1968
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1969sig_name (sig_name.U):
1970 This variable holds the signal names, space separated. The leading
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1971 SIG in signal name is removed. A ZERO is prepended to the
1972 list. This is currently not used.
1973
1974sig_name_init (sig_name.U):
1975 This variable holds the signal names, enclosed in double quotes and
1976 separated by commas, suitable for use in the SIG_NAME definition
1977 below. A "ZERO" is prepended to the list, and the list is
1978 terminated with a plain 0. The leading SIG in signal names
1979 is removed. See sig_num.
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1980
1981sig_num (sig_name.U):
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1982 This variable holds the signal numbers, comma separated. A 0 is
1983 prepended to the list (corresponding to the fake SIGZERO), and
1984 the list is terminated with a 0. Those numbers correspond to
1985 the value of the signal listed in the same place within the
1986 sig_name list.
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1987
1988signal_t (d_voidsig.U):
1989 This variable holds the type of the signal handler (void or int).
1990
1991sitearch (sitearch.U):
1992 This variable contains the eventual value of the SITEARCH symbol,
1993 which is the name of the private library for this package. It may
1994 have a ~ on the front. It is up to the makefile to eventually create
1995 this directory while performing installation (with ~ substitution).
1996
1997sitearchexp (sitearch.U):
1998 This variable is the ~name expanded version of sitearch, so that you
1999 may use it directly in Makefiles or shell scripts.
2000
2001sitelib (sitelib.U):
2002 This variable contains the eventual value of the SITELIB symbol,
2003 which is the name of the private library for this package. It may
2004 have a ~ on the front. It is up to the makefile to eventually create
2005 this directory while performing installation (with ~ substitution).
2006
2007sitelibexp (sitelib.U):
2008 This variable is the ~name expanded version of sitelib, so that you
2009 may use it directly in Makefiles or shell scripts.
2010
2011sizetype (sizetype.U):
2012 This variable defines sizetype to be something like size_t,
2013 unsigned long, or whatever type is used to declare length
2014 parameters for string functions.
2015
2016small (models.U):
2017 This variable contains a flag which will tell the C compiler and loader
2018 to produce a program running with a small memory model. It is up to
2019 the Makefile to use this.
2020
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2021so (so.U):
2022 This variable holds the extension used to identify shared libraries
2023 (also known as shared objects) on the system. Usually set to 'so'.
2024
2025sockethdr (d_socket.U):
2026 This variable has any cpp -I flags needed for socket support.
2027
2028socketlib (d_socket.U):
2029 This variable has the names of any libraries needed for socket support.
2030
2031spackage (package.U):
2032 This variable contains the name of the package being constructed,
2033 with the first letter uppercased, i.e. suitable for starting
2034 sentences.
2035
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2036spitshell (spitshell.U):
2037 This variable contains the command necessary to spit out a runnable
2038 shell on this system. It is either cat or a grep -v for # comments.
2039
2040split (models.U):
2041 This variable contains a flag which will tell the C compiler and loader
2042 to produce a program that will run in separate I and D space, for those
2043 machines that support separation of instruction and data space. It is
2044 up to the Makefile to use this.
2045
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MB
2046src (src.U):
2047 This variable holds the path to the package source. It is up to
2048 the Makefile to use this variable and set VPATH accordingly to
2049 find the sources remotely.
2050
d7418ba7
PP
2051ssizetype (ssizetype.U):
2052 This variable defines ssizetype to be something like ssize_t,
2053 long or int. It is used by functions that return a count
2054 of bytes or an error condition. It must be a signed type.
2055 We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
2056
2057startperl (startperl.U):
2058 This variable contains the string to put on the front of a perl
2059 script to make sure (hopefully) that it runs with perl and not some
2060 shell. Of course, that leading line must be followed by the classical
2061 perl idiom:
dfe9444c 2062 eval 'exec perl -S $0 ${1+"$@"}'
d7418ba7
PP
2063 if $running_under_some_shell;
2064 to guarantee perl startup should the shell execute the script. Note
2065 that this magic incatation is not understood by csh.
2066
2067startsh (startsh.U):
2068 This variable contains the string to put on the front of a shell
2069 script to make sure (hopefully) that it runs with sh and not some
2070 other shell.
2071
2072static_ext (Extensions.U):
2073 This variable holds a list of extension files we want to
2074 link statically into the package. It is used by Makefile.
2075
2076stdchar (stdchar.U):
2077 This variable conditionally defines STDCHAR to be the type of char
2078 used in stdio.h. It has the values "unsigned char" or "char".
2079
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2080stdio_base (d_stdstdio.U):
2081 This variable defines how, given a FILE pointer, fp, to access the
2082 _base field (or equivalent) of stdio.h's FILE structure. This will
2083 be used to define the macro FILE_base(fp).
2084
2085stdio_bufsiz (d_stdstdio.U):
2086 This variable defines how, given a FILE pointer, fp, to determine
2087 the number of bytes store in the I/O buffer pointer to by the
2088 _base field (or equivalent) of stdio.h's FILE structure. This will
2089 be used to define the macro FILE_bufsiz(fp).
2090
2091stdio_cnt (d_stdstdio.U):
2092 This variable defines how, given a FILE pointer, fp, to access the
2093 _cnt field (or equivalent) of stdio.h's FILE structure. This will
2094 be used to define the macro FILE_cnt(fp).
2095
2096stdio_filbuf (d_stdstdio.U):
2097 This variable defines how, given a FILE pointer, fp, to tell
2098 stdio to refill it's internal buffers (?). This will
2099 be used to define the macro FILE_filbuf(fp).
2100
2101stdio_ptr (d_stdstdio.U):
2102 This variable defines how, given a FILE pointer, fp, to access the
2103 _ptr field (or equivalent) of stdio.h's FILE structure. This will
2104 be used to define the macro FILE_ptr(fp).
2105
2106strings (i_string.U):
2107 This variable holds the full path of the string header that will be
2108 used. Typically /usr/include/string.h or /usr/include/strings.h.
2109
2110subversion (patchlevel.U):
2111 The subversion level of this package.
2112 The value of subversion comes from the patchlevel.h file.
2113 This is unique to perl.
2114
2115sysman (sysman.U):
2116 This variable holds the place where the manual is located on this
2117 system. It is not the place where the user wants to put his manual
2118 pages. Rather it is the place where Configure may look to find manual
2119 for unix commands (section 1 of the manual usually). See mansrc.
2120
2121timeincl (i_time.U):
2122 This variable holds the full path of the included time header(s).
2123
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2124timetype (d_time.U):
2125 This variable holds the type returned by time(). It can be long,
2126 or time_t on BSD sites (in which case <sys/types.h> should be
2127 included). Anyway, the type Time_t should be used.
2128
2129uidtype (uidtype.U):
2130 This variable defines Uid_t to be something like uid_t, int,
2131 ushort, or whatever type is used to declare user ids in the kernel.
2132
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2133usedl (dlsrc.U):
2134 This variable indicates if the the system supports dynamic
2135 loading of some sort. See also dlsrc and dlobj.
2136
2137usemymalloc (mallocsrc.U):
2138 This variable contains y if the malloc that comes with this package
2139 is desired over the system's version of malloc. People often include
2140 special versions of malloc for effiency, but such versions are often
2141 less portable. See also mallocsrc and mallocobj.
2142 If this is 'y', then -lmalloc is removed from $libs.
2143
2144usenm (usenm.U):
2145 This variable contains 'true' or 'false' depending whether the
2146 nm extraction is wanted or not.
2147
2148useopcode (Extensions.U):
2149 This variable holds either 'true' or 'false' to indicate
2150 whether the Opcode extension should be used. The sole
2151 use for this currently is to allow an easy mechanism
2152 for users to skip the Opcode extension from the Configure
2153 command line.
2154
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2155useperlio (useperlio.U):
2156 This variable conditionally defines the USE_PERLIO symbol,
2157 and indicates that the PerlIO abstraction should be
2158 used throughout.
2159
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2160useposix (Extensions.U):
2161 This variable holds either 'true' or 'false' to indicate
2162 whether the POSIX extension should be used. The sole
2163 use for this currently is to allow an easy mechanism
2164 for hints files to indicate that POSIX will not compile
2165 on a particular system.
2166
2167usesfio (d_sfio.U):
2168 This variable is set to true when the user agrees to use sfio.
2169 It is set to false when sfio is not available or when the user
2170 explicitely requests not to use sfio. It is here primarily so
2171 that command-line settings can override the auto-detection of
2172 d_sfio without running into a "WHOA THERE".
2173
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2174useshrplib (libperl.U):
2175 This variable is set to 'yes' if the user wishes
2176 to build a shared libperl, and 'no' otherwise.
2177
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2178usethreads (usethreads.U):
2179 This variable conditionally defines the USE_THREADS symbol,
2180 and indicates that Perl should be built to use threads.
2181
2182usevfork (d_vfork.U):
2183 This variable is set to true when the user accepts to use vfork.
2184 It is set to false when no vfork is available or when the user
2185 explicitely requests not to use vfork.
2186
2187usrinc (usrinc.U):
2188 This variable holds the path of the include files, which is
2189 usually /usr/include. It is mainly used by other Configure units.
2190
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2191voidflags (voidflags.U):
2192 This variable contains the eventual value of the VOIDFLAGS symbol,
2193 which indicates how much support of the void type is given by this
2194 compiler. See VOIDFLAGS for more info.
2195