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configure.ac: Use AC_SEARCH_LIBS to find dlopen. 

* configure.ac: Use AC_SEARCH_LIBS to find dlopen.
	* configure: Rebuild.

From-SVN: r152615
This commit is contained in:
Ian Lance Taylor 2009-10-10 04:47:05 +00:00 committed by Ian Lance Taylor
parent 30c99a9e19
commit 0c2edd9f44
3 changed files with 56 additions and 24 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2009-10-09 Ian Lance Taylor <iant@google.com>
* configure.ac: Use AC_SEARCH_LIBS to find dlopen.
* configure: Rebuild.
2009-10-09 Neil Vachharajani <nvachhar@google.com>
* doc/cpp.texi (Other Directives): Do not list #ident and #sccs as

63
gcc/configure vendored
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@ -25013,30 +25013,63 @@ rm -f core conftest.err conftest.$ac_objext \
fi
# Check -ldl
LIBS="$LIBS -ldl"
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -ldl" >&5
$as_echo_n "checking for -ldl... " >&6; }
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing dlopen" >&5
$as_echo_n "checking for library containing dlopen... " >&6; }
if test "${ac_cv_search_dlopen+set}" = set; then :
$as_echo_n "(cached) " >&6
else
ac_func_search_save_LIBS=$LIBS
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <dlfcn.h>
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char dlopen ();
int
main ()
{
volatile int f = 0; if (f) dlopen ("dummy", 0);
return dlopen ();
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
$as_echo "yes" >&6; }; have_dl=yes
else
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
$as_echo "no" >&6; }
for ac_lib in '' dl; do
if test -z "$ac_lib"; then
ac_res="none required"
else
ac_res=-l$ac_lib
LIBS="-l$ac_lib $ac_func_search_save_LIBS"
fi
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_search_dlopen=$ac_res
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
if test x"$have_dl" = x"yes"; then
conftest$ac_exeext
if test "${ac_cv_search_dlopen+set}" = set; then :
break
fi
done
if test "${ac_cv_search_dlopen+set}" = set; then :
else
ac_cv_search_dlopen=no
fi
rm conftest.$ac_ext
LIBS=$ac_func_search_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dlopen" >&5
$as_echo "$ac_cv_search_dlopen" >&6; }
ac_res=$ac_cv_search_dlopen
if test "$ac_res" != no; then :
test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
fi
if test x"$ac_cv_search_dlopen" = x"-ldl"; then
pluginlibs="$pluginlibs -ldl"
fi
@ -25064,7 +25097,7 @@ $as_echo "no" >&6; }; have_pic_shared=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
if test x"$have_pic_shared" != x"yes"; then
if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
pluginlibs=
enable_plugin=no
fi

12
gcc/configure.ac
View File

@ -4253,14 +4253,8 @@ if test x"$enable_plugin" = x"yes"; then
fi
# Check -ldl
LIBS="$LIBS -ldl"
AC_MSG_CHECKING([for -ldl])
AC_TRY_LINK(
[#include <dlfcn.h>],
[volatile int f = 0; if (f) dlopen ("dummy", 0);],
[AC_MSG_RESULT([yes]); have_dl=yes],
[AC_MSG_RESULT([no])])
if test x"$have_dl" = x"yes"; then
AC_SEARCH_LIBS([dlopen], [dl])
if test x"$ac_cv_search_dlopen" = x"-ldl"; then
pluginlibs="$pluginlibs -ldl"
fi
@ -4271,7 +4265,7 @@ if test x"$enable_plugin" = x"yes"; then
[extern int X;],[return X == 0;],
[AC_MSG_RESULT([yes]); have_pic_shared=yes],
[AC_MSG_RESULT([no]); have_pic_shared=no])
if test x"$have_pic_shared" != x"yes"; then
if test x"$have_pic_shared" != x"yes" -o x"$ac_cv_search_dlopen" = x"no"; then
pluginlibs=
enable_plugin=no
fi