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gdb: add target_ops::supports_displaced_step
[deliverable/binutils-gdb.git] / config / lib-link.m4
CommitLineData
f19dd04a
DD		 1# lib-link.m4 serial 4 (gettext-0.12)
2dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
3dnl This file is free software, distributed under the terms of the GNU
4dnl General Public License. As a special exception to the GNU General
5dnl Public License, this file may be distributed as part of a program
6dnl that contains a configuration script generated by Autoconf, under
7dnl the same distribution terms as the rest of that program.
8
9dnl From Bruno Haible.
10
11dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
12dnl the libraries corresponding to explicit and implicit dependencies.
13dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
14dnl augments the CPPFLAGS variable.
15AC_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
41dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode)
42dnl searches for libname and the libraries corresponding to explicit and
43dnl implicit dependencies, together with the specified include files and
44dnl the ability to compile and link the specified testcode. If found, it
45dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and
46dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and
47dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
48dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
49AC_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
93dnl Determine the platform dependent parameters needed to use rpath:
94dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator,
95dnl hardcode_direct, hardcode_minus_L.
96AC_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
122dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
123dnl the libraries corresponding to explicit and implicit dependencies.
124dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
125AC_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])
9f1528a1
AB		 153 AC_LIB_ARG_WITH([lib$1-type],
154[ --with-lib$1-type=TYPE type of library to search for (auto/static/shared) ],
155 [ with_lib$1_type=$withval ], [ with_lib$1_type=auto ])
156 lib_type=`eval echo \$with_lib$1_type`
157
f19dd04a
DD		 158 dnl Search the library and its dependencies in $additional_libdir and
159 dnl $LDFLAGS. Using breadth-first-seach.
160 LIB[]NAME=
161 LTLIB[]NAME=
162 INC[]NAME=
163 rpathdirs=
164 ltrpathdirs=
165 names_already_handled=
166 names_next_round='$1 $2'
167 while test -n "$names_next_round"; do
168 names_this_round="$names_next_round"
169 names_next_round=
170 for name in $names_this_round; do
171 already_handled=
172 for n in $names_already_handled; do
173 if test "$n" = "$name"; then
174 already_handled=yes
175 break
176 fi
177 done
178 if test -z "$already_handled"; then
179 names_already_handled="$names_already_handled $name"
180 dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
181 dnl or AC_LIB_HAVE_LINKFLAGS call.
182 uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
183 eval value=\"\$HAVE_LIB$uppername\"
184 if test -n "$value"; then
185 if test "$value" = yes; then
186 eval value=\"\$LIB$uppername\"
187 test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
188 eval value=\"\$LTLIB$uppername\"
189 test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
190 else
191 dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
192 dnl that this library doesn't exist. So just drop it.
193 :
194 fi
195 else
196 dnl Search the library lib$name in $additional_libdir and $LDFLAGS
197 dnl and the already constructed $LIBNAME/$LTLIBNAME.
198 found_dir=
199 found_la=
200 found_so=
201 found_a=
202 if test $use_additional = yes; then
9f1528a1 203 if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext" && test x$lib_type != xstatic; then
f19dd04a
DD		 204 found_dir="$additional_libdir"
205 found_so="$additional_libdir/lib$name.$shlibext"
206 if test -f "$additional_libdir/lib$name.la"; then
207 found_la="$additional_libdir/lib$name.la"
208 fi
9f1528a1 209 elif test x$lib_type != xshared; then
f19dd04a
DD		 210 if test -f "$additional_libdir/lib$name.$libext"; then
211 found_dir="$additional_libdir"
212 found_a="$additional_libdir/lib$name.$libext"
213 if test -f "$additional_libdir/lib$name.la"; then
214 found_la="$additional_libdir/lib$name.la"
215 fi
216 fi
217 fi
218 fi
219 if test "X$found_dir" = "X"; then
220 for x in $LDFLAGS $LTLIB[]NAME; do
221 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
222 case "$x" in
223 -L*)
224 dir=`echo "X$x" | sed -e 's/^X-L//'`
9f1528a1 225 if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext" && test x$lib_type != xstatic; then
f19dd04a
DD		 226 found_dir="$dir"
227 found_so="$dir/lib$name.$shlibext"
228 if test -f "$dir/lib$name.la"; then
229 found_la="$dir/lib$name.la"
230 fi
9f1528a1 231 elif test x$lib_type != xshared; then
f19dd04a
DD		 232 if test -f "$dir/lib$name.$libext"; then
233 found_dir="$dir"
234 found_a="$dir/lib$name.$libext"
235 if test -f "$dir/lib$name.la"; then
236 found_la="$dir/lib$name.la"
237 fi
238 fi
239 fi
240 ;;
241 esac
242 if test "X$found_dir" != "X"; then
243 break
244 fi
245 done
246 fi
247 if test "X$found_dir" != "X"; then
248 dnl Found the library.
249 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
250 if test "X$found_so" != "X"; then
251 dnl Linking with a shared library. We attempt to hardcode its
252 dnl directory into the executable's runpath, unless it's the
253 dnl standard /usr/lib.
254 if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
255 dnl No hardcoding is needed.
256 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
257 else
258 dnl Use an explicit option to hardcode DIR into the resulting
259 dnl binary.
260 dnl Potentially add DIR to ltrpathdirs.
261 dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
262 haveit=
263 for x in $ltrpathdirs; do
264 if test "X$x" = "X$found_dir"; then
265 haveit=yes
266 break
267 fi
268 done
269 if test -z "$haveit"; then
270 ltrpathdirs="$ltrpathdirs $found_dir"
271 fi
272 dnl The hardcoding into $LIBNAME is system dependent.
273 if test "$hardcode_direct" = yes; then
274 dnl Using DIR/libNAME.so during linking hardcodes DIR into the
275 dnl resulting binary.
276 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
277 else
278 if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
279 dnl Use an explicit option to hardcode DIR into the resulting
280 dnl binary.
281 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
282 dnl Potentially add DIR to rpathdirs.
283 dnl The rpathdirs will be appended to $LIBNAME at the end.
284 haveit=
285 for x in $rpathdirs; do
286 if test "X$x" = "X$found_dir"; then
287 haveit=yes
288 break
289 fi
290 done
291 if test -z "$haveit"; then
292 rpathdirs="$rpathdirs $found_dir"
293 fi
294 else
295 dnl Rely on "-L$found_dir".
296 dnl But don't add it if it's already contained in the LDFLAGS
297 dnl or the already constructed $LIBNAME
298 haveit=
299 for x in $LDFLAGS $LIB[]NAME; do
300 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
301 if test "X$x" = "X-L$found_dir"; then
302 haveit=yes
303 break
304 fi
305 done
306 if test -z "$haveit"; then
307 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
308 fi
309 if test "$hardcode_minus_L" != no; then
310 dnl FIXME: Not sure whether we should use
311 dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
312 dnl here.
313 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
314 else
315 dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH
316 dnl here, because this doesn't fit in flags passed to the
317 dnl compiler. So give up. No hardcoding. This affects only
318 dnl very old systems.
319 dnl FIXME: Not sure whether we should use
320 dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
321 dnl here.
322 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
323 fi
324 fi
325 fi
326 fi
327 else
328 if test "X$found_a" != "X"; then
329 dnl Linking with a static library.
330 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
331 else
332 dnl We shouldn't come here, but anyway it's good to have a
333 dnl fallback.
334 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
335 fi
336 fi
337 dnl Assume the include files are nearby.
338 additional_includedir=
339 case "$found_dir" in
340 */lib | */lib/)
341 basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
342 additional_includedir="$basedir/include"
343 ;;
344 esac
345 if test "X$additional_includedir" != "X"; then
346 dnl Potentially add $additional_includedir to $INCNAME.
347 dnl But don't add it
348 dnl 1. if it's the standard /usr/include,
349 dnl 2. if it's /usr/local/include and we are using GCC on Linux,
350 dnl 3. if it's already present in $CPPFLAGS or the already
351 dnl constructed $INCNAME,
352 dnl 4. if it doesn't exist as a directory.
353 if test "X$additional_includedir" != "X/usr/include"; then
354 haveit=
355 if test "X$additional_includedir" = "X/usr/local/include"; then
356 if test -n "$GCC"; then
357 case $host_os in
358 linux*) haveit=yes;;
359 esac
360 fi
361 fi
362 if test -z "$haveit"; then
363 for x in $CPPFLAGS $INC[]NAME; do
364 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
365 if test "X$x" = "X-I$additional_includedir"; then
366 haveit=yes
367 break
368 fi
369 done
370 if test -z "$haveit"; then
371 if test -d "$additional_includedir"; then
372 dnl Really add $additional_includedir to $INCNAME.
373 INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
374 fi
375 fi
376 fi
377 fi
378 fi
379 dnl Look for dependencies.
380 if test -n "$found_la"; then
381 dnl Read the .la file. It defines the variables
382 dnl dlname, library_names, old_library, dependency_libs, current,
383 dnl age, revision, installed, dlopen, dlpreopen, libdir.
384 save_libdir="$libdir"
385 case "$found_la" in
386 */* | *\\*) . "$found_la" ;;
387 *) . "./$found_la" ;;
388 esac
389 libdir="$save_libdir"
390 dnl We use only dependency_libs.
391 for dep in $dependency_libs; do
392 case "$dep" in
393 -L*)
394 additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
395 dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
396 dnl But don't add it
397 dnl 1. if it's the standard /usr/lib,
398 dnl 2. if it's /usr/local/lib and we are using GCC on Linux,
399 dnl 3. if it's already present in $LDFLAGS or the already
400 dnl constructed $LIBNAME,
401 dnl 4. if it doesn't exist as a directory.
402 if test "X$additional_libdir" != "X/usr/lib"; then
403 haveit=
404 if test "X$additional_libdir" = "X/usr/local/lib"; then
405 if test -n "$GCC"; then
406 case $host_os in
407 linux*) haveit=yes;;
408 esac
409 fi
410 fi
411 if test -z "$haveit"; then
412 haveit=
413 for x in $LDFLAGS $LIB[]NAME; do
414 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
415 if test "X$x" = "X-L$additional_libdir"; then
416 haveit=yes
417 break
418 fi
419 done
420 if test -z "$haveit"; then
421 if test -d "$additional_libdir"; then
422 dnl Really add $additional_libdir to $LIBNAME.
423 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
424 fi
425 fi
426 haveit=
427 for x in $LDFLAGS $LTLIB[]NAME; do
428 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
429 if test "X$x" = "X-L$additional_libdir"; then
430 haveit=yes
431 break
432 fi
433 done
434 if test -z "$haveit"; then
435 if test -d "$additional_libdir"; then
436 dnl Really add $additional_libdir to $LTLIBNAME.
437 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
438 fi
439 fi
440 fi
441 fi
442 ;;
443 -R*)
444 dir=`echo "X$dep" | sed -e 's/^X-R//'`
445 if test "$enable_rpath" != no; then
446 dnl Potentially add DIR to rpathdirs.
447 dnl The rpathdirs will be appended to $LIBNAME at the end.
448 haveit=
449 for x in $rpathdirs; do
450 if test "X$x" = "X$dir"; then
451 haveit=yes
452 break
453 fi
454 done
455 if test -z "$haveit"; then
456 rpathdirs="$rpathdirs $dir"
457 fi
458 dnl Potentially add DIR to ltrpathdirs.
459 dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
460 haveit=
461 for x in $ltrpathdirs; do
462 if test "X$x" = "X$dir"; then
463 haveit=yes
464 break
465 fi
466 done
467 if test -z "$haveit"; then
468 ltrpathdirs="$ltrpathdirs $dir"
469 fi
470 fi
471 ;;
472 -l*)
473 dnl Handle this in the next round.
474 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
475 ;;
476 *.la)
477 dnl Handle this in the next round. Throw away the .la's
478 dnl directory; it is already contained in a preceding -L
479 dnl option.
480 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
481 ;;
482 *)
483 dnl Most likely an immediate library name.
484 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
485 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
486 ;;
487 esac
488 done
489 fi
490 else
491 dnl Didn't find the library; assume it is in the system directories
492 dnl known to the linker and runtime loader. (All the system
493 dnl directories known to the linker should also be known to the
494 dnl runtime loader, otherwise the system is severely misconfigured.)
9f1528a1
AB		 495 if test "x$lib_type" = "xauto" || test "x$lib_type" = "xshared"; then
496 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
497 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
498 else
499 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l:lib$name.$libext"
500 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l:lib$name.$libext"
501 fi
f19dd04a
DD		 502 fi
503 fi
504 fi
505 done
506 done
507 if test "X$rpathdirs" != "X"; then
508 if test -n "$hardcode_libdir_separator"; then
509 dnl Weird platform: only the last -rpath option counts, the user must
510 dnl pass all path elements in one option. We can arrange that for a
511 dnl single library, but not when more than one $LIBNAMEs are used.
512 alldirs=
513 for found_dir in $rpathdirs; do
514 alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
515 done
516 dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl.
517 acl_save_libdir="$libdir"
518 libdir="$alldirs"
519 eval flag=\"$hardcode_libdir_flag_spec\"
520 libdir="$acl_save_libdir"
521 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
522 else
523 dnl The -rpath options are cumulative.
524 for found_dir in $rpathdirs; do
525 acl_save_libdir="$libdir"
526 libdir="$found_dir"
527 eval flag=\"$hardcode_libdir_flag_spec\"
528 libdir="$acl_save_libdir"
529 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
530 done
531 fi
532 fi
533 if test "X$ltrpathdirs" != "X"; then
534 dnl When using libtool, the option that works for both libraries and
535 dnl executables is -R. The -R options are cumulative.
536 for found_dir in $ltrpathdirs; do
537 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
538 done
539 fi
540])
541
542dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
543dnl unless already present in VAR.
544dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
545dnl contains two or three consecutive elements that belong together.
546AC_DEFUN([AC_LIB_APPENDTOVAR],
547[
548 for element in [$2]; do
549 haveit=
550 for x in $[$1]; do
551 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
552 if test "X$x" = "X$element"; then
553 haveit=yes
554 break
555 fi
556 done
557 if test -z "$haveit"; then
558 [$1]="${[$1]}${[$1]:+ }$element"
559 fi
560 done
561])
GDB Binutils - Deliverables
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