Contents of /trunk/xmms/gentoo-m4/lib-link.m4
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Tue May 8 20:52:56 2007 UTC (17 years, 4 months ago) by niro
File size: 23267 byte(s)
Tue May 8 20:52:56 2007 UTC (17 years, 4 months ago) by niro
File size: 23267 byte(s)
-import
1 | # lib-link.m4 serial 4 (gettext-0.12) |
2 | dnl Copyright (C) 2001-2003 Free Software Foundation, Inc. |
3 | dnl This file is free software, distributed under the terms of the GNU |
4 | dnl General Public License. As a special exception to the GNU General |
5 | dnl Public License, this file may be distributed as part of a program |
6 | dnl that contains a configuration script generated by Autoconf, under |
7 | dnl the same distribution terms as the rest of that program. |
8 | |
9 | dnl From Bruno Haible. |
10 | |
11 | dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and |
12 | dnl the libraries corresponding to explicit and implicit dependencies. |
13 | dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and |
14 | dnl augments the CPPFLAGS variable. |
15 | AC_DEFUN([AC_LIB_LINKFLAGS], |
16 | [ |
17 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
18 | AC_REQUIRE([AC_LIB_RPATH]) |
19 | define([Name],[translit([$1],[./-], [___])]) |
20 | define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], |
21 | [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) |
22 | AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [ |
23 | AC_LIB_LINKFLAGS_BODY([$1], [$2]) |
24 | ac_cv_lib[]Name[]_libs="$LIB[]NAME" |
25 | ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME" |
26 | ac_cv_lib[]Name[]_cppflags="$INC[]NAME" |
27 | ]) |
28 | LIB[]NAME="$ac_cv_lib[]Name[]_libs" |
29 | LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs" |
30 | INC[]NAME="$ac_cv_lib[]Name[]_cppflags" |
31 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) |
32 | AC_SUBST([LIB]NAME) |
33 | AC_SUBST([LTLIB]NAME) |
34 | dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the |
35 | dnl results of this search when this library appears as a dependency. |
36 | HAVE_LIB[]NAME=yes |
37 | undefine([Name]) |
38 | undefine([NAME]) |
39 | ]) |
40 | |
41 | dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode) |
42 | dnl searches for libname and the libraries corresponding to explicit and |
43 | dnl implicit dependencies, together with the specified include files and |
44 | dnl the ability to compile and link the specified testcode. If found, it |
45 | dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and |
46 | dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and |
47 | dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs |
48 | dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty. |
49 | AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], |
50 | [ |
51 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
52 | AC_REQUIRE([AC_LIB_RPATH]) |
53 | define([Name],[translit([$1],[./-], [___])]) |
54 | define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], |
55 | [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) |
56 | |
57 | dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME |
58 | dnl accordingly. |
59 | AC_LIB_LINKFLAGS_BODY([$1], [$2]) |
60 | |
61 | dnl Add $INC[]NAME to CPPFLAGS before performing the following checks, |
62 | dnl because if the user has installed lib[]Name and not disabled its use |
63 | dnl via --without-lib[]Name-prefix, he wants to use it. |
64 | ac_save_CPPFLAGS="$CPPFLAGS" |
65 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) |
66 | |
67 | AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [ |
68 | ac_save_LIBS="$LIBS" |
69 | LIBS="$LIBS $LIB[]NAME" |
70 | AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no]) |
71 | LIBS="$ac_save_LIBS" |
72 | ]) |
73 | if test "$ac_cv_lib[]Name" = yes; then |
74 | HAVE_LIB[]NAME=yes |
75 | AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.]) |
76 | AC_MSG_CHECKING([how to link with lib[]$1]) |
77 | AC_MSG_RESULT([$LIB[]NAME]) |
78 | else |
79 | HAVE_LIB[]NAME=no |
80 | dnl If $LIB[]NAME didn't lead to a usable library, we don't need |
81 | dnl $INC[]NAME either. |
82 | CPPFLAGS="$ac_save_CPPFLAGS" |
83 | LIB[]NAME= |
84 | LTLIB[]NAME= |
85 | fi |
86 | AC_SUBST([HAVE_LIB]NAME) |
87 | AC_SUBST([LIB]NAME) |
88 | AC_SUBST([LTLIB]NAME) |
89 | undefine([Name]) |
90 | undefine([NAME]) |
91 | ]) |
92 | |
93 | dnl Determine the platform dependent parameters needed to use rpath: |
94 | dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator, |
95 | dnl hardcode_direct, hardcode_minus_L. |
96 | AC_DEFUN([AC_LIB_RPATH], |
97 | [ |
98 | AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS |
99 | AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld |
100 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host |
101 | AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir |
102 | AC_CACHE_CHECK([for shared library run path origin], acl_cv_rpath, [ |
103 | CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \ |
104 | ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh |
105 | . ./conftest.sh |
106 | rm -f ./conftest.sh |
107 | acl_cv_rpath=done |
108 | ]) |
109 | wl="$acl_cv_wl" |
110 | libext="$acl_cv_libext" |
111 | shlibext="$acl_cv_shlibext" |
112 | hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec" |
113 | hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator" |
114 | hardcode_direct="$acl_cv_hardcode_direct" |
115 | hardcode_minus_L="$acl_cv_hardcode_minus_L" |
116 | dnl Determine whether the user wants rpath handling at all. |
117 | AC_ARG_ENABLE(rpath, |
118 | [ --disable-rpath do not hardcode runtime library paths], |
119 | :, enable_rpath=yes) |
120 | ]) |
121 | |
122 | dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and |
123 | dnl the libraries corresponding to explicit and implicit dependencies. |
124 | dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables. |
125 | AC_DEFUN([AC_LIB_LINKFLAGS_BODY], |
126 | [ |
127 | define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], |
128 | [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) |
129 | dnl By default, look in $includedir and $libdir. |
130 | use_additional=yes |
131 | AC_LIB_WITH_FINAL_PREFIX([ |
132 | eval additional_includedir=\"$includedir\" |
133 | eval additional_libdir=\"$libdir\" |
134 | ]) |
135 | AC_LIB_ARG_WITH([lib$1-prefix], |
136 | [ --with-lib$1-prefix[=DIR] search for lib$1 in DIR/include and DIR/lib |
137 | --without-lib$1-prefix don't search for lib$1 in includedir and libdir], |
138 | [ |
139 | if test "X$withval" = "Xno"; then |
140 | use_additional=no |
141 | else |
142 | if test "X$withval" = "X"; then |
143 | AC_LIB_WITH_FINAL_PREFIX([ |
144 | eval additional_includedir=\"$includedir\" |
145 | eval additional_libdir=\"$libdir\" |
146 | ]) |
147 | else |
148 | additional_includedir="$withval/include" |
149 | additional_libdir="$withval/lib" |
150 | fi |
151 | fi |
152 | ]) |
153 | dnl Search the library and its dependencies in $additional_libdir and |
154 | dnl $LDFLAGS. Using breadth-first-seach. |
155 | LIB[]NAME= |
156 | LTLIB[]NAME= |
157 | INC[]NAME= |
158 | rpathdirs= |
159 | ltrpathdirs= |
160 | names_already_handled= |
161 | names_next_round='$1 $2' |
162 | while test -n "$names_next_round"; do |
163 | names_this_round="$names_next_round" |
164 | names_next_round= |
165 | for name in $names_this_round; do |
166 | already_handled= |
167 | for n in $names_already_handled; do |
168 | if test "$n" = "$name"; then |
169 | already_handled=yes |
170 | break |
171 | fi |
172 | done |
173 | if test -z "$already_handled"; then |
174 | names_already_handled="$names_already_handled $name" |
175 | dnl See if it was already located by an earlier AC_LIB_LINKFLAGS |
176 | dnl or AC_LIB_HAVE_LINKFLAGS call. |
177 | uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'` |
178 | eval value=\"\$HAVE_LIB$uppername\" |
179 | if test -n "$value"; then |
180 | if test "$value" = yes; then |
181 | eval value=\"\$LIB$uppername\" |
182 | test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value" |
183 | eval value=\"\$LTLIB$uppername\" |
184 | test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value" |
185 | else |
186 | dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined |
187 | dnl that this library doesn't exist. So just drop it. |
188 | : |
189 | fi |
190 | else |
191 | dnl Search the library lib$name in $additional_libdir and $LDFLAGS |
192 | dnl and the already constructed $LIBNAME/$LTLIBNAME. |
193 | found_dir= |
194 | found_la= |
195 | found_so= |
196 | found_a= |
197 | if test $use_additional = yes; then |
198 | if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then |
199 | found_dir="$additional_libdir" |
200 | found_so="$additional_libdir/lib$name.$shlibext" |
201 | if test -f "$additional_libdir/lib$name.la"; then |
202 | found_la="$additional_libdir/lib$name.la" |
203 | fi |
204 | else |
205 | if test -f "$additional_libdir/lib$name.$libext"; then |
206 | found_dir="$additional_libdir" |
207 | found_a="$additional_libdir/lib$name.$libext" |
208 | if test -f "$additional_libdir/lib$name.la"; then |
209 | found_la="$additional_libdir/lib$name.la" |
210 | fi |
211 | fi |
212 | fi |
213 | fi |
214 | if test "X$found_dir" = "X"; then |
215 | for x in $LDFLAGS $LTLIB[]NAME; do |
216 | AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
217 | case "$x" in |
218 | -L*) |
219 | dir=`echo "X$x" | sed -e 's/^X-L//'` |
220 | if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then |
221 | found_dir="$dir" |
222 | found_so="$dir/lib$name.$shlibext" |
223 | if test -f "$dir/lib$name.la"; then |
224 | found_la="$dir/lib$name.la" |
225 | fi |
226 | else |
227 | if test -f "$dir/lib$name.$libext"; then |
228 | found_dir="$dir" |
229 | found_a="$dir/lib$name.$libext" |
230 | if test -f "$dir/lib$name.la"; then |
231 | found_la="$dir/lib$name.la" |
232 | fi |
233 | fi |
234 | fi |
235 | ;; |
236 | esac |
237 | if test "X$found_dir" != "X"; then |
238 | break |
239 | fi |
240 | done |
241 | fi |
242 | if test "X$found_dir" != "X"; then |
243 | dnl Found the library. |
244 | LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name" |
245 | if test "X$found_so" != "X"; then |
246 | dnl Linking with a shared library. We attempt to hardcode its |
247 | dnl directory into the executable's runpath, unless it's the |
248 | dnl standard /usr/lib. |
249 | if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then |
250 | dnl No hardcoding is needed. |
251 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" |
252 | else |
253 | dnl Use an explicit option to hardcode DIR into the resulting |
254 | dnl binary. |
255 | dnl Potentially add DIR to ltrpathdirs. |
256 | dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. |
257 | haveit= |
258 | for x in $ltrpathdirs; do |
259 | if test "X$x" = "X$found_dir"; then |
260 | haveit=yes |
261 | break |
262 | fi |
263 | done |
264 | if test -z "$haveit"; then |
265 | ltrpathdirs="$ltrpathdirs $found_dir" |
266 | fi |
267 | dnl The hardcoding into $LIBNAME is system dependent. |
268 | if test "$hardcode_direct" = yes; then |
269 | dnl Using DIR/libNAME.so during linking hardcodes DIR into the |
270 | dnl resulting binary. |
271 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" |
272 | else |
273 | if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then |
274 | dnl Use an explicit option to hardcode DIR into the resulting |
275 | dnl binary. |
276 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" |
277 | dnl Potentially add DIR to rpathdirs. |
278 | dnl The rpathdirs will be appended to $LIBNAME at the end. |
279 | haveit= |
280 | for x in $rpathdirs; do |
281 | if test "X$x" = "X$found_dir"; then |
282 | haveit=yes |
283 | break |
284 | fi |
285 | done |
286 | if test -z "$haveit"; then |
287 | rpathdirs="$rpathdirs $found_dir" |
288 | fi |
289 | else |
290 | dnl Rely on "-L$found_dir". |
291 | dnl But don't add it if it's already contained in the LDFLAGS |
292 | dnl or the already constructed $LIBNAME |
293 | haveit= |
294 | for x in $LDFLAGS $LIB[]NAME; do |
295 | AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
296 | if test "X$x" = "X-L$found_dir"; then |
297 | haveit=yes |
298 | break |
299 | fi |
300 | done |
301 | if test -z "$haveit"; then |
302 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir" |
303 | fi |
304 | if test "$hardcode_minus_L" != no; then |
305 | dnl FIXME: Not sure whether we should use |
306 | dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" |
307 | dnl here. |
308 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" |
309 | else |
310 | dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH |
311 | dnl here, because this doesn't fit in flags passed to the |
312 | dnl compiler. So give up. No hardcoding. This affects only |
313 | dnl very old systems. |
314 | dnl FIXME: Not sure whether we should use |
315 | dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" |
316 | dnl here. |
317 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" |
318 | fi |
319 | fi |
320 | fi |
321 | fi |
322 | else |
323 | if test "X$found_a" != "X"; then |
324 | dnl Linking with a static library. |
325 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a" |
326 | else |
327 | dnl We shouldn't come here, but anyway it's good to have a |
328 | dnl fallback. |
329 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name" |
330 | fi |
331 | fi |
332 | dnl Assume the include files are nearby. |
333 | additional_includedir= |
334 | case "$found_dir" in |
335 | */lib | */lib/) |
336 | basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'` |
337 | additional_includedir="$basedir/include" |
338 | ;; |
339 | esac |
340 | if test "X$additional_includedir" != "X"; then |
341 | dnl Potentially add $additional_includedir to $INCNAME. |
342 | dnl But don't add it |
343 | dnl 1. if it's the standard /usr/include, |
344 | dnl 2. if it's /usr/local/include and we are using GCC on Linux, |
345 | dnl 3. if it's already present in $CPPFLAGS or the already |
346 | dnl constructed $INCNAME, |
347 | dnl 4. if it doesn't exist as a directory. |
348 | if test "X$additional_includedir" != "X/usr/include"; then |
349 | haveit= |
350 | if test "X$additional_includedir" = "X/usr/local/include"; then |
351 | if test -n "$GCC"; then |
352 | case $host_os in |
353 | linux*) haveit=yes;; |
354 | esac |
355 | fi |
356 | fi |
357 | if test -z "$haveit"; then |
358 | for x in $CPPFLAGS $INC[]NAME; do |
359 | AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
360 | if test "X$x" = "X-I$additional_includedir"; then |
361 | haveit=yes |
362 | break |
363 | fi |
364 | done |
365 | if test -z "$haveit"; then |
366 | if test -d "$additional_includedir"; then |
367 | dnl Really add $additional_includedir to $INCNAME. |
368 | INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir" |
369 | fi |
370 | fi |
371 | fi |
372 | fi |
373 | fi |
374 | dnl Look for dependencies. |
375 | if test -n "$found_la"; then |
376 | dnl Read the .la file. It defines the variables |
377 | dnl dlname, library_names, old_library, dependency_libs, current, |
378 | dnl age, revision, installed, dlopen, dlpreopen, libdir. |
379 | save_libdir="$libdir" |
380 | case "$found_la" in |
381 | */* | *\\*) . "$found_la" ;; |
382 | *) . "./$found_la" ;; |
383 | esac |
384 | libdir="$save_libdir" |
385 | dnl We use only dependency_libs. |
386 | for dep in $dependency_libs; do |
387 | case "$dep" in |
388 | -L*) |
389 | additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'` |
390 | dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME. |
391 | dnl But don't add it |
392 | dnl 1. if it's the standard /usr/lib, |
393 | dnl 2. if it's /usr/local/lib and we are using GCC on Linux, |
394 | dnl 3. if it's already present in $LDFLAGS or the already |
395 | dnl constructed $LIBNAME, |
396 | dnl 4. if it doesn't exist as a directory. |
397 | if test "X$additional_libdir" != "X/usr/lib"; then |
398 | haveit= |
399 | if test "X$additional_libdir" = "X/usr/local/lib"; then |
400 | if test -n "$GCC"; then |
401 | case $host_os in |
402 | linux*) haveit=yes;; |
403 | esac |
404 | fi |
405 | fi |
406 | if test -z "$haveit"; then |
407 | haveit= |
408 | for x in $LDFLAGS $LIB[]NAME; do |
409 | AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
410 | if test "X$x" = "X-L$additional_libdir"; then |
411 | haveit=yes |
412 | break |
413 | fi |
414 | done |
415 | if test -z "$haveit"; then |
416 | if test -d "$additional_libdir"; then |
417 | dnl Really add $additional_libdir to $LIBNAME. |
418 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir" |
419 | fi |
420 | fi |
421 | haveit= |
422 | for x in $LDFLAGS $LTLIB[]NAME; do |
423 | AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
424 | if test "X$x" = "X-L$additional_libdir"; then |
425 | haveit=yes |
426 | break |
427 | fi |
428 | done |
429 | if test -z "$haveit"; then |
430 | if test -d "$additional_libdir"; then |
431 | dnl Really add $additional_libdir to $LTLIBNAME. |
432 | LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir" |
433 | fi |
434 | fi |
435 | fi |
436 | fi |
437 | ;; |
438 | -R*) |
439 | dir=`echo "X$dep" | sed -e 's/^X-R//'` |
440 | if test "$enable_rpath" != no; then |
441 | dnl Potentially add DIR to rpathdirs. |
442 | dnl The rpathdirs will be appended to $LIBNAME at the end. |
443 | haveit= |
444 | for x in $rpathdirs; do |
445 | if test "X$x" = "X$dir"; then |
446 | haveit=yes |
447 | break |
448 | fi |
449 | done |
450 | if test -z "$haveit"; then |
451 | rpathdirs="$rpathdirs $dir" |
452 | fi |
453 | dnl Potentially add DIR to ltrpathdirs. |
454 | dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. |
455 | haveit= |
456 | for x in $ltrpathdirs; do |
457 | if test "X$x" = "X$dir"; then |
458 | haveit=yes |
459 | break |
460 | fi |
461 | done |
462 | if test -z "$haveit"; then |
463 | ltrpathdirs="$ltrpathdirs $dir" |
464 | fi |
465 | fi |
466 | ;; |
467 | -l*) |
468 | dnl Handle this in the next round. |
469 | names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'` |
470 | ;; |
471 | *.la) |
472 | dnl Handle this in the next round. Throw away the .la's |
473 | dnl directory; it is already contained in a preceding -L |
474 | dnl option. |
475 | names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'` |
476 | ;; |
477 | *) |
478 | dnl Most likely an immediate library name. |
479 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep" |
480 | LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep" |
481 | ;; |
482 | esac |
483 | done |
484 | fi |
485 | else |
486 | dnl Didn't find the library; assume it is in the system directories |
487 | dnl known to the linker and runtime loader. (All the system |
488 | dnl directories known to the linker should also be known to the |
489 | dnl runtime loader, otherwise the system is severely misconfigured.) |
490 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" |
491 | LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name" |
492 | fi |
493 | fi |
494 | fi |
495 | done |
496 | done |
497 | if test "X$rpathdirs" != "X"; then |
498 | if test -n "$hardcode_libdir_separator"; then |
499 | dnl Weird platform: only the last -rpath option counts, the user must |
500 | dnl pass all path elements in one option. We can arrange that for a |
501 | dnl single library, but not when more than one $LIBNAMEs are used. |
502 | alldirs= |
503 | for found_dir in $rpathdirs; do |
504 | alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir" |
505 | done |
506 | dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl. |
507 | acl_save_libdir="$libdir" |
508 | libdir="$alldirs" |
509 | eval flag=\"$hardcode_libdir_flag_spec\" |
510 | libdir="$acl_save_libdir" |
511 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" |
512 | else |
513 | dnl The -rpath options are cumulative. |
514 | for found_dir in $rpathdirs; do |
515 | acl_save_libdir="$libdir" |
516 | libdir="$found_dir" |
517 | eval flag=\"$hardcode_libdir_flag_spec\" |
518 | libdir="$acl_save_libdir" |
519 | LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" |
520 | done |
521 | fi |
522 | fi |
523 | if test "X$ltrpathdirs" != "X"; then |
524 | dnl When using libtool, the option that works for both libraries and |
525 | dnl executables is -R. The -R options are cumulative. |
526 | for found_dir in $ltrpathdirs; do |
527 | LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir" |
528 | done |
529 | fi |
530 | ]) |
531 | |
532 | dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR, |
533 | dnl unless already present in VAR. |
534 | dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes |
535 | dnl contains two or three consecutive elements that belong together. |
536 | AC_DEFUN([AC_LIB_APPENDTOVAR], |
537 | [ |
538 | for element in [$2]; do |
539 | haveit= |
540 | for x in $[$1]; do |
541 | AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
542 | if test "X$x" = "X$element"; then |
543 | haveit=yes |
544 | break |
545 | fi |
546 | done |
547 | if test -z "$haveit"; then |
548 | [$1]="${[$1]}${[$1]:+ }$element" |
549 | fi |
550 | done |
551 | ]) |