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[metaconfig.git] / U / perl / Extensions.U
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1?RCS: $Id: Extensions.U,v$
2?RCS:
3?RCS: Copyright (c) 1996-1998, Andy Dougherty
4?RCS:
5?RCS: You may distribute under the terms of either the GNU General Public
6?RCS: License or the Artistic License, as specified in the README file.
7?RCS:
8?RCS: $Log: Extensions.U,v $
9?RCS:
10?MAKE:known_extensions extensions dynamic_ext static_ext nonxs_ext \
11 useposix useopcode : \
3c64a580 12 Myread hint usedl d_sem d_socket i_db i_dbm i_rpcsvcdbm i_gdbm \
50dd2a3c 13 i_ndbm usethreads use5005threads package test cat rsrc \
d0abe53c 14 d_msg d_shm osname use64bitint i_langinfo d_nl_langinfo \
58aecb3f 15 libs
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16?MAKE: -pick add $@ %<
17?Y:BOTTOM
18?S:known_extensions:
3c64a580 19?S: This variable holds a list of all XS extensions included in
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20?S: the package.
21?S:.
22?S:dynamic_ext:
23?S: This variable holds a list of XS extension files we want to
24?S: link dynamically into the package. It is used by Makefile.
25?S:.
26?S:static_ext:
27?S: This variable holds a list of XS extension files we want to
28?S: link statically into the package. It is used by Makefile.
29?S:.
30?S:nonxs_ext:
31?S: This variable holds a list of all non-xs extensions included
32?S: in the package. All of them will be built.
33?S:.
34?S:extensions:
35?S: This variable holds a list of all extension files (both XS and
36?S: non-xs linked into the package. It is propagated to Config.pm
3c64a580 37?S: and is typically used to test whether a particular extesion
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38?S: is available.
39?S:.
40?S:useposix:
41?S: This variable holds either 'true' or 'false' to indicate
42?S: whether the POSIX extension should be used. The sole
43?S: use for this currently is to allow an easy mechanism
44?S: for hints files to indicate that POSIX will not compile
45?S: on a particular system.
46?S:.
47?S:useopcode:
48?S: This variable holds either 'true' or 'false' to indicate
49?S: whether the Opcode extension should be used. The sole
50?S: use for this currently is to allow an easy mechanism
51?S: for users to skip the Opcode extension from the Configure
52?S: command line.
53?S:.
54?T:xxx avail_ext tdir nonxs_extensions find_extensions
55?INIT:: set useposix=false in your hint file to disable the POSIX extension.
56?INIT:useposix=true
57?INIT:: set useopcode=false in your hint file to disable the Opcode extension.
58?INIT:useopcode=true
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59?LINT:extern noextensions
60?LINT:extern onlyextensions
946dea48 61?T:keepextensions i
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62echo " "
63echo "Looking for extensions..." >&4
64: If we are using the old config.sh, known_extensions may contain
65: old or inaccurate or duplicate values.
66known_extensions=''
67nonxs_extensions=''
68: We do not use find because it might not be available.
69: We do not just use MANIFEST because the user may have dropped
70: some additional extensions into the source tree and expect them
71: to be built.
72
73: Function to recursively find available extensions, ignoring DynaLoader
74: NOTE: recursion limit of 10 to prevent runaway in case of symlink madness
75find_extensions='
76 for xxx in *; do
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77 case "$xxx" in
78 DynaLoader|dynaload) ;;
79 *)
1d5a8f63 80 if $test -f $xxx/$xxx.xs -o -f $xxx/$xxx.c; then
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81 known_extensions="$known_extensions $1$xxx";
82 elif $test -f $xxx/Makefile.PL; then
83 nonxs_extensions="$nonxs_extensions $1$xxx";
84 else
85 if $test -d $xxx -a $# -lt 10; then
86 set $1$xxx/ $*;
87 cd "$xxx";
88 eval $find_extensions;
89 cd ..;
90 shift;
91 fi;
92 fi
93 ;;
94 esac;
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95 done'
96tdir=`pwd`
3720fc47 97cd "$rsrc/ext"
86a2f2c4 98set X
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99shift
100eval $find_extensions
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101# Special case: Add in threads/shared since it is not picked up by the
102# recursive find above (and adding in general recursive finding breaks
103# SDBM_File/sdbm). A.D. 10/25/2001.
ba335d16 104known_extensions="$known_extensions threads/shared"
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105set X $known_extensions
106shift
107known_extensions="$*"
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108set X $nonxs_extensions
109shift
110nonxs_extensions="$*"
3720fc47 111cd "$tdir"
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112
113: Now see which are supported on this system.
114?X: avail_ext lists available XS extensions.
115avail_ext=''
116for xxx in $known_extensions ; do
117 case "$xxx" in
118?X: Handle possible DOS 8.3 filename and case alterations
119 DB_File|db_file)
120 case "$i_db" in
121 $define) avail_ext="$avail_ext $xxx" ;;
122 esac
123 ;;
124 GDBM_File|gdbm_fil)
3c64a580 125 case "$i_gdbm" in
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126 $define) avail_ext="$avail_ext $xxx" ;;
127 esac
128 ;;
dfd712ee 129 I18N/Langinfo|i18n_lan)
3c64a580 130 case "$i_langinfo$d_nl_langinfo" in
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131 $define$define) avail_ext="$avail_ext $xxx" ;;
132 esac
133 ;;
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134 NDBM_File|ndbm_fil)
135 case "$i_ndbm" in
4ee071c7 136 $define)
33b2427b 137 case "$osname-$use64bitint" in
2862815c 138 hpux-define)
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139 case "$libs" in
140 *-lndbm*) avail_ext="$avail_ext $xxx" ;;
141 esac
142 ;;
143 *) avail_ext="$avail_ext $xxx" ;;
144 esac
145 ;;
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146 esac
147 ;;
3c64a580 148 ODBM_File|odbm_fil)
959f3c4c 149 case "${i_dbm}${i_rpcsvcdbm}" in
4ee071c7 150 *"${define}"*)
33b2427b 151 case "$osname-$use64bitint" in
2862815c 152 hpux-define)
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153 case "$libs" in
154 *-ldbm*) avail_ext="$avail_ext $xxx" ;;
155 esac
156 ;;
157 *) avail_ext="$avail_ext $xxx" ;;
158 esac
159 ;;
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160 esac
161 ;;
162 POSIX|posix)
163 case "$useposix" in
164 true|define|y) avail_ext="$avail_ext $xxx" ;;
165 esac
166 ;;
167 Opcode|opcode)
168 case "$useopcode" in
169 true|define|y) avail_ext="$avail_ext $xxx" ;;
170 esac
171 ;;
172 Socket|socket)
3c64a580 173 case "$d_socket" in
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174 true|$define|y)
175 case "$osname" in
176 beos) ;; # not unless BONE
177 *) avail_ext="$avail_ext $xxx" ;;
178 esac
179 ;;
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180 esac
181 ;;
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182 Sys/Syslog|sys/syslog)
183 : XXX syslog requires socket
3c64a580 184 case "$d_socket" in
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185 true|$define|y) avail_ext="$avail_ext $xxx" ;;
186 esac
187 ;;
959f3c4c 188 Thread|thread)
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189 case "$usethreads" in
190 true|$define|y)
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191 case "$use5005threads" in
192 $define|true|[yY]*) avail_ext="$avail_ext $xxx" ;;
4a2f2b60 193 esac
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194 esac
195 ;;
1d5a8f63 196 Win32*)
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197 case "$osname" in
198 cygwin) avail_ext="$avail_ext $xxx" ;;
199 esac
200 ;;
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201 XS/APItest|xs/apitest)
202 # This is just for testing. Skip it unless we have dynamic loading.
203
204 case "$usedl" in
205 $define) avail_ext="$avail_ext $xxx" ;;
206 esac
207 ;;
208 XS/Typemap|xs/typemap)
209 # This is just for testing. Skip it unless we have dynamic loading.
210 case "$usedl" in
211 $define) avail_ext="$avail_ext $xxx" ;;
212 esac
213 ;;
4f2abfa6 214 threads|threads/shared)
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215 # threads and threads::shared are special cases.
216 # To stop people from asking "Perl 5.8.0 was supposed
217 # to have this new fancy threads implementation but my
218 # perl doesn't have it" and from people trying to
219 # (re)install the threads module using CPAN.pm and
220 # CPAN.pm then offering to reinstall Perl 5.8.0,
221 # the threads.pm and threads/shared.pm will always be
222 # there, croaking informatively ("you need to rebuild
223 # all of Perl with threads, sorry") when threads haven't
224 # been compiled in.
225 # --jhi
226 avail_ext="$avail_ext $xxx"
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227 ;;
228 IPC/SysV|ipc/sysv)
229 : XXX Do we need a useipcsysv variable here
3c64a580 230 case "${d_msg}${d_sem}${d_shm}" in
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231 *"${define}"*) avail_ext="$avail_ext $xxx" ;;
232 esac
233 ;;
234 *) avail_ext="$avail_ext $xxx"
235 ;;
236 esac
237done
238
239set X $avail_ext
240shift
241avail_ext="$*"
242
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243case "$onlyextensions" in
244'') ;;
245*) keepextensions=''
246 echo "You have requested that only certains extensions be included..." >&4
247 for i in $onlyextensions; do
248 case " $avail_ext " in
249 *" $i "*)
250 echo "Keeping extension $i."
251 keepextensions="$keepextensions $i"
252 ;;
253 *) echo "Ignoring extension $i." ;;
254 esac
255 done
256 avail_ext="$keepextensions"
257 ;;
258esac
259
260case "$noextensions" in
261'') ;;
262*) keepextensions=''
263 echo "You have requested that certain extensions be ignored..." >&4
264 for i in $avail_ext; do
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265 case " $noextensions " in
266 *" $i "*) echo "Ignoring extension $i." ;;
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267 *) echo "Keeping extension $i.";
268 keepextensions="$keepextensions $i"
269 ;;
270 esac
271 done
272 avail_ext="$keepextensions"
273 ;;
274esac
275
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276: Now see which nonxs extensions are supported on this system.
277: For now assume all are.
278nonxs_ext=''
279for xxx in $nonxs_extensions ; do
280 case "$xxx" in
281 *) nonxs_ext="$nonxs_ext $xxx"
282 ;;
283 esac
284done
285
286set X $nonxs_ext
287shift
288nonxs_ext="$*"
289
290case $usedl in
291$define)
292 $cat <<EOM
293A number of extensions are supplied with $package. You may choose to
294compile these extensions for dynamic loading (the default), compile
295them into the $package executable (static loading), or not include
296them at all. Answer "none" to include no extensions.
297Note that DynaLoader is always built and need not be mentioned here.
298
299EOM
300 case "$dynamic_ext" in
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301 '')
302 : Exclude those listed in static_ext
303 dflt=''
304 for xxx in $avail_ext; do
305 case " $static_ext " in
306 *" $xxx "*) ;;
307 *) dflt="$dflt $xxx" ;;
308 esac
309 done
310 set X $dflt
311 shift
312 dflt="$*"
313 ;;
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314 *) dflt="$dynamic_ext"
315 # Perhaps we are reusing an old out-of-date config.sh.
316 case "$hint" in
317 previous)
318 if test X"$dynamic_ext" != X"$avail_ext"; then
319 $cat <<EOM
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320NOTICE: Your previous config.sh list may be incorrect.
321The extensions now available to you are
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322 ${avail_ext}
323but the default list from your previous config.sh is
3c64a580 324 ${dynamic_ext}
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325
326EOM
327 fi
328 ;;
329 esac
330 ;;
331 esac
332 case "$dflt" in
333 '') dflt=none;;
334 esac
335 rp="What extensions do you wish to load dynamically?"
336 . ./myread
337 case "$ans" in
338?X: Use ' ' so a subsequent Configure will preserve that value.
339 none) dynamic_ext=' ' ;;
340 *) dynamic_ext="$ans" ;;
341 esac
342
343 case "$static_ext" in
344 '')
345 : Exclude those already listed in dynamic linking
346 dflt=''
347 for xxx in $avail_ext; do
348 case " $dynamic_ext " in
349 *" $xxx "*) ;;
350 *) dflt="$dflt $xxx" ;;
351 esac
352 done
353 set X $dflt
354 shift
355 dflt="$*"
356 ;;
3c64a580 357 *) dflt="$static_ext"
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358 ;;
359 esac
360
361 case "$dflt" in
362 '') dflt=none;;
363 esac
364 rp="What extensions do you wish to load statically?"
365 . ./myread
366 case "$ans" in
367?X: Use ' ' so a subsequent Configure will preserve that value.
368 none) static_ext=' ' ;;
369 *) static_ext="$ans" ;;
370 esac
371 ;;
372*)
373 $cat <<EOM
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374A number of extensions are supplied with $package. Answer "none"
375to include no extensions.
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376Note that DynaLoader is always built and need not be mentioned here.
377
378EOM
379 case "$static_ext" in
380 '') dflt="$avail_ext" ;;
381 *) dflt="$static_ext"
382 # Perhaps we are reusing an old out-of-date config.sh.
383 case "$hint" in
384 previous)
385 if test X"$static_ext" != X"$avail_ext"; then
386 $cat <<EOM
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387NOTICE: Your previous config.sh list may be incorrect.
388The extensions now available to you are
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389 ${avail_ext}
390but the default list from your previous config.sh is
3c64a580 391 ${static_ext}
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392
393EOM
394 fi
395 ;;
396 esac
397 ;;
398 esac
399 : Exclude those that are not xs extensions
400 case "$dflt" in
401 '') dflt=none;;
402 esac
403 rp="What extensions do you wish to include?"
404 . ./myread
405 case "$ans" in
406?X: Use ' ' so a subsequent Configure will preserve that value.
407 none) static_ext=' ' ;;
408 *) static_ext="$ans" ;;
409 esac
410 ;;
411esac
3c64a580 412#
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413# Encode is a special case. If we are building Encode as a static
414# extension, we need to explicitly list its subextensions as well.
415# For other nested extensions, this is handled automatically by
416# the appropriate Makefile.PL.
417case " $static_ext " in
418 *" Encode "*) # Add the subextensions of Encode
419 cd "$rsrc/ext"
420 for xxx in `ls Encode/*/Makefile.PL|awk -F/ '{print $2}'`; do
421 static_ext="$static_ext Encode/$xxx"
422 done
423 cd "$tdir"
424 ;;
425esac
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426
427set X $dynamic_ext $static_ext $nonxs_ext
428shift
429extensions="$*"
430
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431# Sanity check: We require an extension suitable for use with
432# AnyDBM_File, as well as Fcntl and IO. (Failure to have these
433# should show up as failures in the test suite, but it's helpful to
434# catch them now.) The 'extensions' list is normally sorted
435# alphabetically, so we need to accept either
436# DB_File ... Fcntl ... IO ....
437# or something like
438# Fcntl ... NDBM_File ... IO ....
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439case " $extensions" in
440*"_File "*" Fcntl "*" IO "*) ;; # DB_File
441*" Fcntl "*"_File "*" IO "*) ;; # GDBM_File
442*" Fcntl "*" IO "*"_File "*) ;; # NDBM_File
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443*) echo "WARNING: Extensions DB_File or *DBM_File, Fcntl, and IO not configured." >&4
444 echo "WARNING: The Perl you are building will be quite crippled." >& 4
445 ;;
446esac
447