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metaconfig tweakage.
[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 : \
12 Myread hint usedl d_sem d_socket i_db i_dbm i_rpcsvcdbm i_gdbm \
4a2f2b60 13 i_ndbm usethreads useithreads 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:
19?S: This variable holds a list of all XS extensions included in
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
37?S: and is typically used to test whether a particular extesion
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
59echo " "
60echo "Looking for extensions..." >&4
61: If we are using the old config.sh, known_extensions may contain
62: old or inaccurate or duplicate values.
63known_extensions=''
64nonxs_extensions=''
65: We do not use find because it might not be available.
66: We do not just use MANIFEST because the user may have dropped
67: some additional extensions into the source tree and expect them
68: to be built.
69
70: Function to recursively find available extensions, ignoring DynaLoader
71: NOTE: recursion limit of 10 to prevent runaway in case of symlink madness
72find_extensions='
73 for xxx in *; do
74 case "$xxx" in
75 DynaLoader|dynaload) ;;
76 *)
77 if $test -f $xxx/$xxx.xs; then
78 known_extensions="$known_extensions $1$xxx";
79 elif $test -f $xxx/Makefile.PL; then
80 nonxs_extensions="$nonxs_extensions $1$xxx";
81 else
82 if $test -d $xxx -a $# -lt 10; then
83 set $1$xxx/ $*;
3720fc47 84 cd "$xxx";
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85 eval $find_extensions;
86 cd ..;
87 shift;
84e2cbfd 88 fi;
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89 fi
90 ;;
84e2cbfd 91 esac;
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92 done'
93tdir=`pwd`
3720fc47 94cd "$rsrc/ext"
86a2f2c4 95set X
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96shift
97eval $find_extensions
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98# Special case: Add in threads/shared since it is not picked up by the
99# recursive find above (and adding in general recursive finding breaks
100# SDBM_File/sdbm). A.D. 10/25/2001.
ba335d16 101known_extensions="$known_extensions threads/shared"
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102set X $nonxs_extensions
103shift
104nonxs_extensions="$*"
105set X $known_extensions
106shift
107known_extensions="$*"
3720fc47 108cd "$tdir"
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109
110: Now see which are supported on this system.
111?X: avail_ext lists available XS extensions.
112avail_ext=''
113for xxx in $known_extensions ; do
114 case "$xxx" in
115?X: Handle possible DOS 8.3 filename and case alterations
116 DB_File|db_file)
117 case "$i_db" in
118 $define) avail_ext="$avail_ext $xxx" ;;
119 esac
120 ;;
121 GDBM_File|gdbm_fil)
122 case "$i_gdbm" in
123 $define) avail_ext="$avail_ext $xxx" ;;
124 esac
125 ;;
dfd712ee 126 I18N/Langinfo|i18n_lan)
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127 case "$i_langinfo$d_nl_langinfo" in
128 $define$define) avail_ext="$avail_ext $xxx" ;;
129 esac
130 ;;
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131 NDBM_File|ndbm_fil)
132 case "$i_ndbm" in
4ee071c7 133 $define)
33b2427b 134 case "$osname-$use64bitint" in
2862815c 135 hpux-define)
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136 case "$libs" in
137 *-lndbm*) avail_ext="$avail_ext $xxx" ;;
138 esac
139 ;;
140 *) avail_ext="$avail_ext $xxx" ;;
141 esac
142 ;;
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143 esac
144 ;;
145 ODBM_File|odbm_fil)
146 case "${i_dbm}${i_rpcsvcdbm}" in
4ee071c7 147 *"${define}"*)
33b2427b 148 case "$osname-$use64bitint" in
2862815c 149 hpux-define)
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150 case "$libs" in
151 *-ldbm*) avail_ext="$avail_ext $xxx" ;;
152 esac
153 ;;
154 *) avail_ext="$avail_ext $xxx" ;;
155 esac
156 ;;
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157 esac
158 ;;
159 POSIX|posix)
160 case "$useposix" in
161 true|define|y) avail_ext="$avail_ext $xxx" ;;
162 esac
163 ;;
164 Opcode|opcode)
165 case "$useopcode" in
166 true|define|y) avail_ext="$avail_ext $xxx" ;;
167 esac
168 ;;
169 Socket|socket)
170 case "$d_socket" in
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171 true|$define|y)
172 case "$osname" in
173 beos) ;; # not unless BONE
174 *) avail_ext="$avail_ext $xxx" ;;
175 esac
176 ;;
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177 esac
178 ;;
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179 Sys/Syslog|sys/syslog)
180 : XXX syslog requires socket
181 case "$d_socket" in
182 true|$define|y) avail_ext="$avail_ext $xxx" ;;
183 esac
184 ;;
959f3c4c 185 Thread|thread)
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186 case "$usethreads" in
187 true|$define|y)
188 case "$useithreads" in
189 $undef|false|[nN]*) avail_ext="$avail_ext $xxx" ;;
190 esac
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191 esac
192 ;;
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193 XS/APItest|xs/apitest)
194 # This is just for testing. Skip it unless we have dynamic loading.
195
196 case "$usedl" in
197 $define) avail_ext="$avail_ext $xxx" ;;
198 esac
199 ;;
200 XS/Typemap|xs/typemap)
201 # This is just for testing. Skip it unless we have dynamic loading.
202 case "$usedl" in
203 $define) avail_ext="$avail_ext $xxx" ;;
204 esac
205 ;;
4f2abfa6 206 threads|threads/shared)
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207 # threads and threads::shared are special cases.
208 # To stop people from asking "Perl 5.8.0 was supposed
209 # to have this new fancy threads implementation but my
210 # perl doesn't have it" and from people trying to
211 # (re)install the threads module using CPAN.pm and
212 # CPAN.pm then offering to reinstall Perl 5.8.0,
213 # the threads.pm and threads/shared.pm will always be
214 # there, croaking informatively ("you need to rebuild
215 # all of Perl with threads, sorry") when threads haven't
216 # been compiled in.
217 # --jhi
218 avail_ext="$avail_ext $xxx"
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219 ;;
220 IPC/SysV|ipc/sysv)
221 : XXX Do we need a useipcsysv variable here
222 case "${d_msg}${d_sem}${d_shm}" in
223 *"${define}"*) avail_ext="$avail_ext $xxx" ;;
224 esac
225 ;;
226 *) avail_ext="$avail_ext $xxx"
227 ;;
228 esac
229done
230
231set X $avail_ext
232shift
233avail_ext="$*"
234
235: Now see which nonxs extensions are supported on this system.
236: For now assume all are.
237nonxs_ext=''
238for xxx in $nonxs_extensions ; do
239 case "$xxx" in
240 *) nonxs_ext="$nonxs_ext $xxx"
241 ;;
242 esac
243done
244
245set X $nonxs_ext
246shift
247nonxs_ext="$*"
248
249case $usedl in
250$define)
251 $cat <<EOM
252A number of extensions are supplied with $package. You may choose to
253compile these extensions for dynamic loading (the default), compile
254them into the $package executable (static loading), or not include
255them at all. Answer "none" to include no extensions.
256Note that DynaLoader is always built and need not be mentioned here.
257
258EOM
259 case "$dynamic_ext" in
260 '') dflt="$avail_ext" ;;
261 *) dflt="$dynamic_ext"
262 # Perhaps we are reusing an old out-of-date config.sh.
263 case "$hint" in
264 previous)
265 if test X"$dynamic_ext" != X"$avail_ext"; then
266 $cat <<EOM
267NOTICE: Your previous config.sh list may be incorrect.
268The extensions now available to you are
269 ${avail_ext}
270but the default list from your previous config.sh is
271 ${dynamic_ext}
272
273EOM
274 fi
275 ;;
276 esac
277 ;;
278 esac
279 case "$dflt" in
280 '') dflt=none;;
281 esac
282 rp="What extensions do you wish to load dynamically?"
283 . ./myread
284 case "$ans" in
285?X: Use ' ' so a subsequent Configure will preserve that value.
286 none) dynamic_ext=' ' ;;
287 *) dynamic_ext="$ans" ;;
288 esac
289
290 case "$static_ext" in
291 '')
292 : Exclude those already listed in dynamic linking
293 dflt=''
294 for xxx in $avail_ext; do
295 case " $dynamic_ext " in
296 *" $xxx "*) ;;
297 *) dflt="$dflt $xxx" ;;
298 esac
299 done
300 set X $dflt
301 shift
302 dflt="$*"
303 ;;
304 *) dflt="$static_ext"
305 ;;
306 esac
307
308 case "$dflt" in
309 '') dflt=none;;
310 esac
311 rp="What extensions do you wish to load statically?"
312 . ./myread
313 case "$ans" in
314?X: Use ' ' so a subsequent Configure will preserve that value.
315 none) static_ext=' ' ;;
316 *) static_ext="$ans" ;;
317 esac
318 ;;
319*)
320 $cat <<EOM
321A number of extensions are supplied with $package. Answer "none"
322to include no extensions.
323Note that DynaLoader is always built and need not be mentioned here.
324
325EOM
326 case "$static_ext" in
327 '') dflt="$avail_ext" ;;
328 *) dflt="$static_ext"
329 # Perhaps we are reusing an old out-of-date config.sh.
330 case "$hint" in
331 previous)
332 if test X"$static_ext" != X"$avail_ext"; then
333 $cat <<EOM
334NOTICE: Your previous config.sh list may be incorrect.
335The extensions now available to you are
336 ${avail_ext}
337but the default list from your previous config.sh is
338 ${static_ext}
339
340EOM
341 fi
342 ;;
343 esac
344 ;;
345 esac
346 : Exclude those that are not xs extensions
347 case "$dflt" in
348 '') dflt=none;;
349 esac
350 rp="What extensions do you wish to include?"
351 . ./myread
352 case "$ans" in
353?X: Use ' ' so a subsequent Configure will preserve that value.
354 none) static_ext=' ' ;;
355 *) static_ext="$ans" ;;
356 esac
357 ;;
358esac
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359#
360# Encode is a special case. If we are building Encode as a static
361# extension, we need to explicitly list its subextensions as well.
362# For other nested extensions, this is handled automatically by
363# the appropriate Makefile.PL.
364case " $static_ext " in
365 *" Encode "*) # Add the subextensions of Encode
366 cd "$rsrc/ext"
367 for xxx in `ls Encode/*/Makefile.PL|awk -F/ '{print $2}'`; do
368 static_ext="$static_ext Encode/$xxx"
369 done
370 cd "$tdir"
371 ;;
372esac
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373
374set X $dynamic_ext $static_ext $nonxs_ext
375shift
376extensions="$*"
377