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metaconfig unit change for #13582.
[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 \
d12857d9 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/ $*;
84 cd $xxx;
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`
94cd $rsrc/ext
86a2f2c4 95set X
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96shift
97eval $find_extensions
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98# Special case: Add in threads/shared since it is not picked up by the
99# recursive find above (and adding in general recursive finding breaks
100# SDBM_File/sdbm). A.D. 10/25/2001.
101known_extensions="$known_extensions threads/shared"
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102set X $nonxs_extensions
103shift
104nonxs_extensions="$*"
105set X $known_extensions
106shift
107known_extensions="$*"
108cd $tdir
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-$use64bitint" in
cfdc7a7f 135 cygwin-*|hpux-define)
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136 case "$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
cfdc7a7f 149 cygwin-*|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
171 true|$define|y) avail_ext="$avail_ext $xxx" ;;
172 esac
173 ;;
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174 Sys/Syslog|sys/syslog)
175 : XXX syslog requires socket
176 case "$d_socket" in
177 true|$define|y) avail_ext="$avail_ext $xxx" ;;
178 esac
179 ;;
959f3c4c 180 Thread|thread)
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181 case "$usethreads" in
182 true|$define|y)
183 case "$useithreads" in
184 $undef|false|[nN]*) avail_ext="$avail_ext $xxx" ;;
185 esac
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186 esac
187 ;;
4f2abfa6 188 threads|threads/shared)
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189 case "$usethreads" in
190 true|$define|y)
191 case "$useithreads" in
192 $define|true|[yY]*) avail_ext="$avail_ext $xxx" ;;
193 esac
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194 esac
195 ;;
196 IPC/SysV|ipc/sysv)
197 : XXX Do we need a useipcsysv variable here
198 case "${d_msg}${d_sem}${d_shm}" in
199 *"${define}"*) avail_ext="$avail_ext $xxx" ;;
200 esac
201 ;;
202 *) avail_ext="$avail_ext $xxx"
203 ;;
204 esac
205done
206
207set X $avail_ext
208shift
209avail_ext="$*"
210
211: Now see which nonxs extensions are supported on this system.
212: For now assume all are.
213nonxs_ext=''
214for xxx in $nonxs_extensions ; do
215 case "$xxx" in
216 *) nonxs_ext="$nonxs_ext $xxx"
217 ;;
218 esac
219done
220
221set X $nonxs_ext
222shift
223nonxs_ext="$*"
224
225case $usedl in
226$define)
227 $cat <<EOM
228A number of extensions are supplied with $package. You may choose to
229compile these extensions for dynamic loading (the default), compile
230them into the $package executable (static loading), or not include
231them at all. Answer "none" to include no extensions.
232Note that DynaLoader is always built and need not be mentioned here.
233
234EOM
235 case "$dynamic_ext" in
236 '') dflt="$avail_ext" ;;
237 *) dflt="$dynamic_ext"
238 # Perhaps we are reusing an old out-of-date config.sh.
239 case "$hint" in
240 previous)
241 if test X"$dynamic_ext" != X"$avail_ext"; then
242 $cat <<EOM
243NOTICE: Your previous config.sh list may be incorrect.
244The extensions now available to you are
245 ${avail_ext}
246but the default list from your previous config.sh is
247 ${dynamic_ext}
248
249EOM
250 fi
251 ;;
252 esac
253 ;;
254 esac
255 case "$dflt" in
256 '') dflt=none;;
257 esac
258 rp="What extensions do you wish to load dynamically?"
259 . ./myread
260 case "$ans" in
261?X: Use ' ' so a subsequent Configure will preserve that value.
262 none) dynamic_ext=' ' ;;
263 *) dynamic_ext="$ans" ;;
264 esac
265
266 case "$static_ext" in
267 '')
268 : Exclude those already listed in dynamic linking
269 dflt=''
270 for xxx in $avail_ext; do
271 case " $dynamic_ext " in
272 *" $xxx "*) ;;
273 *) dflt="$dflt $xxx" ;;
274 esac
275 done
276 set X $dflt
277 shift
278 dflt="$*"
279 ;;
280 *) dflt="$static_ext"
281 ;;
282 esac
283
284 case "$dflt" in
285 '') dflt=none;;
286 esac
287 rp="What extensions do you wish to load statically?"
288 . ./myread
289 case "$ans" in
290?X: Use ' ' so a subsequent Configure will preserve that value.
291 none) static_ext=' ' ;;
292 *) static_ext="$ans" ;;
293 esac
294 ;;
295*)
296 $cat <<EOM
297A number of extensions are supplied with $package. Answer "none"
298to include no extensions.
299Note that DynaLoader is always built and need not be mentioned here.
300
301EOM
302 case "$static_ext" in
303 '') dflt="$avail_ext" ;;
304 *) dflt="$static_ext"
305 # Perhaps we are reusing an old out-of-date config.sh.
306 case "$hint" in
307 previous)
308 if test X"$static_ext" != X"$avail_ext"; then
309 $cat <<EOM
310NOTICE: Your previous config.sh list may be incorrect.
311The extensions now available to you are
312 ${avail_ext}
313but the default list from your previous config.sh is
314 ${static_ext}
315
316EOM
317 fi
318 ;;
319 esac
320 ;;
321 esac
322 : Exclude those that are not xs extensions
323 case "$dflt" in
324 '') dflt=none;;
325 esac
326 rp="What extensions do you wish to include?"
327 . ./myread
328 case "$ans" in
329?X: Use ' ' so a subsequent Configure will preserve that value.
330 none) static_ext=' ' ;;
331 *) static_ext="$ans" ;;
332 esac
333 ;;
334esac
335
336set X $dynamic_ext $static_ext $nonxs_ext
337shift
338extensions="$*"
339