diff -up ClanLib-2.3.7/acinclude.m4~ ClanLib-2.3.7/acinclude.m4
--- ClanLib-2.3.7/acinclude.m4~	2011-11-24 11:57:30.000000000 +0100
+++ ClanLib-2.3.7/acinclude.m4	2015-04-02 15:22:52.060631122 +0200
@@ -5,6 +5,7 @@ dnl CLANLIB_CHECK_LIB(lib, testprog, mod
 define([CLANLIB_CHECK_LIB],[if test "$enable_$3" != "no"; then
     OLDLIBS="$LIBS"; LIBS="$5"; AC_MSG_CHECKING(for $1)
     OLD_CXXFLAGS="$CXXFLAGS"; CXXFLAGS="$6";
+    OLD_LDFLAGS="$LDFLAGS"; LDFLAGS=;
     AC_RUN_IFELSE([AC_LANG_SOURCE($2)], [CL_RESULT=yes], [CL_RESULT=no], [AC_LINK_IFELSE([AC_LANG_SOURCE($2)], [CL_RESULT="yes, linked"],[CL_RESULT=no])])
     AC_MSG_RESULT([$CL_RESULT])
     if test "$CL_RESULT" = "no"; then
@@ -14,6 +15,7 @@ define([CLANLIB_CHECK_LIB],[if test "$en
         extra_LIBS_$3=" $extra_LIBS_$3 $LIBS "
     fi
     CXXFLAGS="$OLD_CXXFLAGS"
+    LDFLAGS="$OLD_LDFLAGS"
     LIBS="$OLDLIBS"
 fi])