tlib-link.m4 - vaccinewars - be a doctor and try to vaccinate the world
(HTM) git clone git://src.adamsgaard.dk/vaccinewars
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---
tlib-link.m4 (34802B)
---
1 # lib-link.m4 serial 31
2 dnl Copyright (C) 2001-2020 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
6
7 dnl From Bruno Haible.
8
9 AC_PREREQ([2.61])
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 dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
16 dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
17 AC_DEFUN([AC_LIB_LINKFLAGS],
18 [
19 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
20 AC_REQUIRE([AC_LIB_RPATH])
21 pushdef([Name],[m4_translit([$1],[./+-], [____])])
22 pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
23 [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
24 AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
25 AC_LIB_LINKFLAGS_BODY([$1], [$2])
26 ac_cv_lib[]Name[]_libs="$LIB[]NAME"
27 ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
28 ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
29 ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
30 ])
31 LIB[]NAME="$ac_cv_lib[]Name[]_libs"
32 LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
33 INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
34 LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
35 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
36 AC_SUBST([LIB]NAME)
37 AC_SUBST([LTLIB]NAME)
38 AC_SUBST([LIB]NAME[_PREFIX])
39 dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
40 dnl results of this search when this library appears as a dependency.
41 HAVE_LIB[]NAME=yes
42 popdef([NAME])
43 popdef([Name])
44 ])
45
46 dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
47 dnl searches for libname and the libraries corresponding to explicit and
48 dnl implicit dependencies, together with the specified include files and
49 dnl the ability to compile and link the specified testcode. The missing-message
50 dnl defaults to 'no' and may contain additional hints for the user.
51 dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
52 dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
53 dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
54 dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
55 dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
56 dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
57 AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
58 [
59 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
60 AC_REQUIRE([AC_LIB_RPATH])
61 pushdef([Name],[m4_translit([$1],[./+-], [____])])
62 pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
63 [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
64
65 dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
66 dnl accordingly.
67 AC_LIB_LINKFLAGS_BODY([$1], [$2])
68
69 dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
70 dnl because if the user has installed lib[]Name and not disabled its use
71 dnl via --without-lib[]Name-prefix, he wants to use it.
72 ac_save_CPPFLAGS="$CPPFLAGS"
73 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
74
75 AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
76 ac_save_LIBS="$LIBS"
77 dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
78 dnl because these -l options might require -L options that are present in
79 dnl LIBS. -l options benefit only from the -L options listed before it.
80 dnl Otherwise, add it to the front of LIBS, because it may be a static
81 dnl library that depends on another static library that is present in LIBS.
82 dnl Static libraries benefit only from the static libraries listed after
83 dnl it.
84 case " $LIB[]NAME" in
85 *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
86 *) LIBS="$LIB[]NAME $LIBS" ;;
87 esac
88 AC_LINK_IFELSE(
89 [AC_LANG_PROGRAM([[$3]], [[$4]])],
90 [ac_cv_lib[]Name=yes],
91 [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
92 LIBS="$ac_save_LIBS"
93 ])
94 if test "$ac_cv_lib[]Name" = yes; then
95 HAVE_LIB[]NAME=yes
96 AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.])
97 AC_MSG_CHECKING([how to link with lib[]$1])
98 AC_MSG_RESULT([$LIB[]NAME])
99 else
100 HAVE_LIB[]NAME=no
101 dnl If $LIB[]NAME didn't lead to a usable library, we don't need
102 dnl $INC[]NAME either.
103 CPPFLAGS="$ac_save_CPPFLAGS"
104 LIB[]NAME=
105 LTLIB[]NAME=
106 LIB[]NAME[]_PREFIX=
107 fi
108 AC_SUBST([HAVE_LIB]NAME)
109 AC_SUBST([LIB]NAME)
110 AC_SUBST([LTLIB]NAME)
111 AC_SUBST([LIB]NAME[_PREFIX])
112 popdef([NAME])
113 popdef([Name])
114 ])
115
116 dnl Determine the platform dependent parameters needed to use rpath:
117 dnl acl_libext,
118 dnl acl_shlibext,
119 dnl acl_libname_spec,
120 dnl acl_library_names_spec,
121 dnl acl_hardcode_libdir_flag_spec,
122 dnl acl_hardcode_libdir_separator,
123 dnl acl_hardcode_direct,
124 dnl acl_hardcode_minus_L.
125 AC_DEFUN([AC_LIB_RPATH],
126 [
127 dnl Complain if config.rpath is missing.
128 AC_REQUIRE_AUX_FILE([config.rpath])
129 AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS
130 AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld
131 AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host
132 AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
133 AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [
134 CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
135 ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
136 . ./conftest.sh
137 rm -f ./conftest.sh
138 acl_cv_rpath=done
139 ])
140 wl="$acl_cv_wl"
141 acl_libext="$acl_cv_libext"
142 acl_shlibext="$acl_cv_shlibext"
143 acl_libname_spec="$acl_cv_libname_spec"
144 acl_library_names_spec="$acl_cv_library_names_spec"
145 acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
146 acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
147 acl_hardcode_direct="$acl_cv_hardcode_direct"
148 acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
149 dnl Determine whether the user wants rpath handling at all.
150 AC_ARG_ENABLE([rpath],
151 [ --disable-rpath do not hardcode runtime library paths],
152 :, enable_rpath=yes)
153 ])
154
155 dnl AC_LIB_FROMPACKAGE(name, package)
156 dnl declares that libname comes from the given package. The configure file
157 dnl will then not have a --with-libname-prefix option but a
158 dnl --with-package-prefix option. Several libraries can come from the same
159 dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar
160 dnl macro call that searches for libname.
161 AC_DEFUN([AC_LIB_FROMPACKAGE],
162 [
163 pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
164 [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
165 define([acl_frompackage_]NAME, [$2])
166 popdef([NAME])
167 pushdef([PACK],[$2])
168 pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
169 [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
170 define([acl_libsinpackage_]PACKUP,
171 m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1])
172 popdef([PACKUP])
173 popdef([PACK])
174 ])
175
176 dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
177 dnl the libraries corresponding to explicit and implicit dependencies.
178 dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
179 dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
180 dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
181 AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
182 [
183 AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
184 pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
185 [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
186 pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])])
187 pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
188 [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
189 pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])])
190 dnl By default, look in $includedir and $libdir.
191 use_additional=yes
192 AC_LIB_WITH_FINAL_PREFIX([
193 eval additional_includedir=\"$includedir\"
194 eval additional_libdir=\"$libdir\"
195 eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
196 eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
197 ])
198 AC_ARG_WITH(PACK[-prefix],
199 [[ --with-]]PACK[[-prefix[=DIR] search for ]PACKLIBS[ in DIR/include and DIR/lib
200 --without-]]PACK[[-prefix don't search for ]PACKLIBS[ in includedir and libdir]],
201 [
202 if test "X$withval" = "Xno"; then
203 use_additional=no
204 else
205 if test "X$withval" = "X"; then
206 AC_LIB_WITH_FINAL_PREFIX([
207 eval additional_includedir=\"$includedir\"
208 eval additional_libdir=\"$libdir\"
209 eval additional_libdir2=\"$exec_prefix/$acl_libdirstem2\"
210 eval additional_libdir3=\"$exec_prefix/$acl_libdirstem3\"
211 ])
212 else
213 additional_includedir="$withval/include"
214 additional_libdir="$withval/$acl_libdirstem"
215 additional_libdir2="$withval/$acl_libdirstem2"
216 additional_libdir3="$withval/$acl_libdirstem3"
217 fi
218 fi
219 ])
220 if test "X$additional_libdir2" = "X$additional_libdir"; then
221 additional_libdir2=
222 fi
223 if test "X$additional_libdir3" = "X$additional_libdir"; then
224 additional_libdir3=
225 fi
226 dnl Search the library and its dependencies in $additional_libdir and
227 dnl $LDFLAGS. Using breadth-first-seach.
228 LIB[]NAME=
229 LTLIB[]NAME=
230 INC[]NAME=
231 LIB[]NAME[]_PREFIX=
232 dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been
233 dnl computed. So it has to be reset here.
234 HAVE_LIB[]NAME=
235 rpathdirs=
236 ltrpathdirs=
237 names_already_handled=
238 names_next_round='$1 $2'
239 while test -n "$names_next_round"; do
240 names_this_round="$names_next_round"
241 names_next_round=
242 for name in $names_this_round; do
243 already_handled=
244 for n in $names_already_handled; do
245 if test "$n" = "$name"; then
246 already_handled=yes
247 break
248 fi
249 done
250 if test -z "$already_handled"; then
251 names_already_handled="$names_already_handled $name"
252 dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
253 dnl or AC_LIB_HAVE_LINKFLAGS call.
254 uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
255 eval value=\"\$HAVE_LIB$uppername\"
256 if test -n "$value"; then
257 if test "$value" = yes; then
258 eval value=\"\$LIB$uppername\"
259 test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
260 eval value=\"\$LTLIB$uppername\"
261 test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
262 else
263 dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
264 dnl that this library doesn't exist. So just drop it.
265 :
266 fi
267 else
268 dnl Search the library lib$name in $additional_libdir and $LDFLAGS
269 dnl and the already constructed $LIBNAME/$LTLIBNAME.
270 found_dir=
271 found_la=
272 found_so=
273 found_a=
274 eval libname=\"$acl_libname_spec\" # typically: libname=lib$name
275 if test -n "$acl_shlibext"; then
276 shrext=".$acl_shlibext" # typically: shrext=.so
277 else
278 shrext=
279 fi
280 if test $use_additional = yes; then
281 for additional_libdir_variable in additional_libdir additional_libdir2 additional_libdir3; do
282 if test "X$found_dir" = "X"; then
283 eval dir=\$$additional_libdir_variable
284 if test -n "$dir"; then
285 dnl The same code as in the loop below:
286 dnl First look for a shared library.
287 if test -n "$acl_shlibext"; then
288 if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
289 found_dir="$dir"
290 found_so="$dir/$libname$shrext"
291 else
292 if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
293 ver=`(cd "$dir" && \
294 for f in "$libname$shrext".*; do echo "$f"; done \
295 | sed -e "s,^$libname$shrext\\\\.,," \
296 | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
297 | sed 1q ) 2>/dev/null`
298 if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
299 found_dir="$dir"
300 found_so="$dir/$libname$shrext.$ver"
301 fi
302 else
303 eval library_names=\"$acl_library_names_spec\"
304 for f in $library_names; do
305 if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
306 found_dir="$dir"
307 found_so="$dir/$f"
308 break
309 fi
310 done
311 fi
312 fi
313 fi
314 dnl Then look for a static library.
315 if test "X$found_dir" = "X"; then
316 if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
317 found_dir="$dir"
318 found_a="$dir/$libname.$acl_libext"
319 fi
320 fi
321 if test "X$found_dir" != "X"; then
322 if test -f "$dir/$libname.la"; then
323 found_la="$dir/$libname.la"
324 fi
325 fi
326 fi
327 fi
328 done
329 fi
330 if test "X$found_dir" = "X"; then
331 for x in $LDFLAGS $LTLIB[]NAME; do
332 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
333 case "$x" in
334 -L*)
335 dir=`echo "X$x" | sed -e 's/^X-L//'`
336 dnl First look for a shared library.
337 if test -n "$acl_shlibext"; then
338 if test -f "$dir/$libname$shrext" && acl_is_expected_elfclass < "$dir/$libname$shrext"; then
339 found_dir="$dir"
340 found_so="$dir/$libname$shrext"
341 else
342 if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
343 ver=`(cd "$dir" && \
344 for f in "$libname$shrext".*; do echo "$f"; done \
345 | sed -e "s,^$libname$shrext\\\\.,," \
346 | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
347 | sed 1q ) 2>/dev/null`
348 if test -n "$ver" && test -f "$dir/$libname$shrext.$ver" && acl_is_expected_elfclass < "$dir/$libname$shrext.$ver"; then
349 found_dir="$dir"
350 found_so="$dir/$libname$shrext.$ver"
351 fi
352 else
353 eval library_names=\"$acl_library_names_spec\"
354 for f in $library_names; do
355 if test -f "$dir/$f" && acl_is_expected_elfclass < "$dir/$f"; then
356 found_dir="$dir"
357 found_so="$dir/$f"
358 break
359 fi
360 done
361 fi
362 fi
363 fi
364 dnl Then look for a static library.
365 if test "X$found_dir" = "X"; then
366 if test -f "$dir/$libname.$acl_libext" && ${AR-ar} -p "$dir/$libname.$acl_libext" | acl_is_expected_elfclass; then
367 found_dir="$dir"
368 found_a="$dir/$libname.$acl_libext"
369 fi
370 fi
371 if test "X$found_dir" != "X"; then
372 if test -f "$dir/$libname.la"; then
373 found_la="$dir/$libname.la"
374 fi
375 fi
376 ;;
377 esac
378 if test "X$found_dir" != "X"; then
379 break
380 fi
381 done
382 fi
383 if test "X$found_dir" != "X"; then
384 dnl Found the library.
385 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
386 if test "X$found_so" != "X"; then
387 dnl Linking with a shared library. We attempt to hardcode its
388 dnl directory into the executable's runpath, unless it's the
389 dnl standard /usr/lib.
390 if test "$enable_rpath" = no \
391 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
392 || test "X$found_dir" = "X/usr/$acl_libdirstem2" \
393 || test "X$found_dir" = "X/usr/$acl_libdirstem3"; then
394 dnl No hardcoding is needed.
395 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
396 else
397 dnl Use an explicit option to hardcode DIR into the resulting
398 dnl binary.
399 dnl Potentially add DIR to ltrpathdirs.
400 dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
401 haveit=
402 for x in $ltrpathdirs; do
403 if test "X$x" = "X$found_dir"; then
404 haveit=yes
405 break
406 fi
407 done
408 if test -z "$haveit"; then
409 ltrpathdirs="$ltrpathdirs $found_dir"
410 fi
411 dnl The hardcoding into $LIBNAME is system dependent.
412 if test "$acl_hardcode_direct" = yes; then
413 dnl Using DIR/libNAME.so during linking hardcodes DIR into the
414 dnl resulting binary.
415 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
416 else
417 if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
418 dnl Use an explicit option to hardcode DIR into the resulting
419 dnl binary.
420 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
421 dnl Potentially add DIR to rpathdirs.
422 dnl The rpathdirs will be appended to $LIBNAME at the end.
423 haveit=
424 for x in $rpathdirs; do
425 if test "X$x" = "X$found_dir"; then
426 haveit=yes
427 break
428 fi
429 done
430 if test -z "$haveit"; then
431 rpathdirs="$rpathdirs $found_dir"
432 fi
433 else
434 dnl Rely on "-L$found_dir".
435 dnl But don't add it if it's already contained in the LDFLAGS
436 dnl or the already constructed $LIBNAME
437 haveit=
438 for x in $LDFLAGS $LIB[]NAME; do
439 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
440 if test "X$x" = "X-L$found_dir"; then
441 haveit=yes
442 break
443 fi
444 done
445 if test -z "$haveit"; then
446 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
447 fi
448 if test "$acl_hardcode_minus_L" != no; then
449 dnl FIXME: Not sure whether we should use
450 dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
451 dnl here.
452 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
453 else
454 dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH
455 dnl here, because this doesn't fit in flags passed to the
456 dnl compiler. So give up. No hardcoding. This affects only
457 dnl very old systems.
458 dnl FIXME: Not sure whether we should use
459 dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
460 dnl here.
461 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
462 fi
463 fi
464 fi
465 fi
466 else
467 if test "X$found_a" != "X"; then
468 dnl Linking with a static library.
469 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
470 else
471 dnl We shouldn't come here, but anyway it's good to have a
472 dnl fallback.
473 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
474 fi
475 fi
476 dnl Assume the include files are nearby.
477 additional_includedir=
478 case "$found_dir" in
479 */$acl_libdirstem | */$acl_libdirstem/)
480 basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
481 if test "$name" = '$1'; then
482 LIB[]NAME[]_PREFIX="$basedir"
483 fi
484 additional_includedir="$basedir/include"
485 ;;
486 */$acl_libdirstem2 | */$acl_libdirstem2/)
487 basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
488 if test "$name" = '$1'; then
489 LIB[]NAME[]_PREFIX="$basedir"
490 fi
491 additional_includedir="$basedir/include"
492 ;;
493 */$acl_libdirstem3 | */$acl_libdirstem3/)
494 basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem3/"'*$,,'`
495 if test "$name" = '$1'; then
496 LIB[]NAME[]_PREFIX="$basedir"
497 fi
498 additional_includedir="$basedir/include"
499 ;;
500 esac
501 if test "X$additional_includedir" != "X"; then
502 dnl Potentially add $additional_includedir to $INCNAME.
503 dnl But don't add it
504 dnl 1. if it's the standard /usr/include,
505 dnl 2. if it's /usr/local/include and we are using GCC on Linux,
506 dnl 3. if it's already present in $CPPFLAGS or the already
507 dnl constructed $INCNAME,
508 dnl 4. if it doesn't exist as a directory.
509 if test "X$additional_includedir" != "X/usr/include"; then
510 haveit=
511 if test "X$additional_includedir" = "X/usr/local/include"; then
512 if test -n "$GCC"; then
513 case $host_os in
514 linux* | gnu* | k*bsd*-gnu) haveit=yes;;
515 esac
516 fi
517 fi
518 if test -z "$haveit"; then
519 for x in $CPPFLAGS $INC[]NAME; do
520 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
521 if test "X$x" = "X-I$additional_includedir"; then
522 haveit=yes
523 break
524 fi
525 done
526 if test -z "$haveit"; then
527 if test -d "$additional_includedir"; then
528 dnl Really add $additional_includedir to $INCNAME.
529 INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
530 fi
531 fi
532 fi
533 fi
534 fi
535 dnl Look for dependencies.
536 if test -n "$found_la"; then
537 dnl Read the .la file. It defines the variables
538 dnl dlname, library_names, old_library, dependency_libs, current,
539 dnl age, revision, installed, dlopen, dlpreopen, libdir.
540 save_libdir="$libdir"
541 case "$found_la" in
542 */* | *\\*) . "$found_la" ;;
543 *) . "./$found_la" ;;
544 esac
545 libdir="$save_libdir"
546 dnl We use only dependency_libs.
547 for dep in $dependency_libs; do
548 case "$dep" in
549 -L*)
550 dependency_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
551 dnl Potentially add $dependency_libdir to $LIBNAME and $LTLIBNAME.
552 dnl But don't add it
553 dnl 1. if it's the standard /usr/lib,
554 dnl 2. if it's /usr/local/lib and we are using GCC on Linux,
555 dnl 3. if it's already present in $LDFLAGS or the already
556 dnl constructed $LIBNAME,
557 dnl 4. if it doesn't exist as a directory.
558 if test "X$dependency_libdir" != "X/usr/$acl_libdirstem" \
559 && test "X$dependency_libdir" != "X/usr/$acl_libdirstem2" \
560 && test "X$dependency_libdir" != "X/usr/$acl_libdirstem3"; then
561 haveit=
562 if test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem" \
563 || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem2" \
564 || test "X$dependency_libdir" = "X/usr/local/$acl_libdirstem3"; then
565 if test -n "$GCC"; then
566 case $host_os in
567 linux* | gnu* | k*bsd*-gnu) haveit=yes;;
568 esac
569 fi
570 fi
571 if test -z "$haveit"; then
572 haveit=
573 for x in $LDFLAGS $LIB[]NAME; do
574 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
575 if test "X$x" = "X-L$dependency_libdir"; then
576 haveit=yes
577 break
578 fi
579 done
580 if test -z "$haveit"; then
581 if test -d "$dependency_libdir"; then
582 dnl Really add $dependency_libdir to $LIBNAME.
583 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$dependency_libdir"
584 fi
585 fi
586 haveit=
587 for x in $LDFLAGS $LTLIB[]NAME; do
588 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
589 if test "X$x" = "X-L$dependency_libdir"; then
590 haveit=yes
591 break
592 fi
593 done
594 if test -z "$haveit"; then
595 if test -d "$dependency_libdir"; then
596 dnl Really add $dependency_libdir to $LTLIBNAME.
597 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$dependency_libdir"
598 fi
599 fi
600 fi
601 fi
602 ;;
603 -R*)
604 dir=`echo "X$dep" | sed -e 's/^X-R//'`
605 if test "$enable_rpath" != no; then
606 dnl Potentially add DIR to rpathdirs.
607 dnl The rpathdirs will be appended to $LIBNAME at the end.
608 haveit=
609 for x in $rpathdirs; do
610 if test "X$x" = "X$dir"; then
611 haveit=yes
612 break
613 fi
614 done
615 if test -z "$haveit"; then
616 rpathdirs="$rpathdirs $dir"
617 fi
618 dnl Potentially add DIR to ltrpathdirs.
619 dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
620 haveit=
621 for x in $ltrpathdirs; do
622 if test "X$x" = "X$dir"; then
623 haveit=yes
624 break
625 fi
626 done
627 if test -z "$haveit"; then
628 ltrpathdirs="$ltrpathdirs $dir"
629 fi
630 fi
631 ;;
632 -l*)
633 dnl Handle this in the next round.
634 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
635 ;;
636 *.la)
637 dnl Handle this in the next round. Throw away the .la's
638 dnl directory; it is already contained in a preceding -L
639 dnl option.
640 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
641 ;;
642 *)
643 dnl Most likely an immediate library name.
644 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
645 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
646 ;;
647 esac
648 done
649 fi
650 else
651 dnl Didn't find the library; assume it is in the system directories
652 dnl known to the linker and runtime loader. (All the system
653 dnl directories known to the linker should also be known to the
654 dnl runtime loader, otherwise the system is severely misconfigured.)
655 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
656 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
657 fi
658 fi
659 fi
660 done
661 done
662 if test "X$rpathdirs" != "X"; then
663 if test -n "$acl_hardcode_libdir_separator"; then
664 dnl Weird platform: only the last -rpath option counts, the user must
665 dnl pass all path elements in one option. We can arrange that for a
666 dnl single library, but not when more than one $LIBNAMEs are used.
667 alldirs=
668 for found_dir in $rpathdirs; do
669 alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
670 done
671 dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
672 acl_save_libdir="$libdir"
673 libdir="$alldirs"
674 eval flag=\"$acl_hardcode_libdir_flag_spec\"
675 libdir="$acl_save_libdir"
676 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
677 else
678 dnl The -rpath options are cumulative.
679 for found_dir in $rpathdirs; do
680 acl_save_libdir="$libdir"
681 libdir="$found_dir"
682 eval flag=\"$acl_hardcode_libdir_flag_spec\"
683 libdir="$acl_save_libdir"
684 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
685 done
686 fi
687 fi
688 if test "X$ltrpathdirs" != "X"; then
689 dnl When using libtool, the option that works for both libraries and
690 dnl executables is -R. The -R options are cumulative.
691 for found_dir in $ltrpathdirs; do
692 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
693 done
694 fi
695 popdef([PACKLIBS])
696 popdef([PACKUP])
697 popdef([PACK])
698 popdef([NAME])
699 ])
700
701 dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
702 dnl unless already present in VAR.
703 dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
704 dnl contains two or three consecutive elements that belong together.
705 AC_DEFUN([AC_LIB_APPENDTOVAR],
706 [
707 for element in [$2]; do
708 haveit=
709 for x in $[$1]; do
710 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
711 if test "X$x" = "X$element"; then
712 haveit=yes
713 break
714 fi
715 done
716 if test -z "$haveit"; then
717 [$1]="${[$1]}${[$1]:+ }$element"
718 fi
719 done
720 ])
721
722 dnl For those cases where a variable contains several -L and -l options
723 dnl referring to unknown libraries and directories, this macro determines the
724 dnl necessary additional linker options for the runtime path.
725 dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
726 dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
727 dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
728 dnl otherwise linking without libtool is assumed.
729 AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
730 [
731 AC_REQUIRE([AC_LIB_RPATH])
732 AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
733 $1=
734 if test "$enable_rpath" != no; then
735 if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
736 dnl Use an explicit option to hardcode directories into the resulting
737 dnl binary.
738 rpathdirs=
739 next=
740 for opt in $2; do
741 if test -n "$next"; then
742 dir="$next"
743 dnl No need to hardcode the standard /usr/lib.
744 if test "X$dir" != "X/usr/$acl_libdirstem" \
745 && test "X$dir" != "X/usr/$acl_libdirstem2" \
746 && test "X$dir" != "X/usr/$acl_libdirstem3"; then
747 rpathdirs="$rpathdirs $dir"
748 fi
749 next=
750 else
751 case $opt in
752 -L) next=yes ;;
753 -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
754 dnl No need to hardcode the standard /usr/lib.
755 if test "X$dir" != "X/usr/$acl_libdirstem" \
756 && test "X$dir" != "X/usr/$acl_libdirstem2" \
757 && test "X$dir" != "X/usr/$acl_libdirstem3"; then
758 rpathdirs="$rpathdirs $dir"
759 fi
760 next= ;;
761 *) next= ;;
762 esac
763 fi
764 done
765 if test "X$rpathdirs" != "X"; then
766 if test -n ""$3""; then
767 dnl libtool is used for linking. Use -R options.
768 for dir in $rpathdirs; do
769 $1="${$1}${$1:+ }-R$dir"
770 done
771 else
772 dnl The linker is used for linking directly.
773 if test -n "$acl_hardcode_libdir_separator"; then
774 dnl Weird platform: only the last -rpath option counts, the user
775 dnl must pass all path elements in one option.
776 alldirs=
777 for dir in $rpathdirs; do
778 alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
779 done
780 acl_save_libdir="$libdir"
781 libdir="$alldirs"
782 eval flag=\"$acl_hardcode_libdir_flag_spec\"
783 libdir="$acl_save_libdir"
784 $1="$flag"
785 else
786 dnl The -rpath options are cumulative.
787 for dir in $rpathdirs; do
788 acl_save_libdir="$libdir"
789 libdir="$dir"
790 eval flag=\"$acl_hardcode_libdir_flag_spec\"
791 libdir="$acl_save_libdir"
792 $1="${$1}${$1:+ }$flag"
793 done
794 fi
795 fi
796 fi
797 fi
798 fi
799 AC_SUBST([$1])
800 ])