Detect OpenGL in new /usr/lib/mesa directory

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kde-common/admin@1072815 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

acinclude.m4.in

@@ -4054,7 +4054,7 @@ AC_DEFUN([AC_HAVE_GL],
     ac_save_cxxflags=$CXXFLAGS
     ac_save_libs=$LIBS
     LDFLAGS="$LDFLAGS $GL_LDFLAGS $X_LDFLAGS $all_libraries"
-    LIBS="$LIBS -lGL -lGLU"
+    LIBS="$LIBS -L/usr/lib/mesa -lGL -lGLU"
     test "x$kde_use_qt_mac" != xyes && test "x$kde_use_qt_emb" != xyes && LIBS="$LIBS -lX11"
     LIBS="$LIBS $LIB_XEXT -lm $LIBSOCKET"
     CXXFLAGS="$CFLAGS $X_INCLUDES"
@@ -4077,9 +4077,9 @@ AC_DEFUN([AC_HAVE_GL],
   else
     AC_DEFINE(HAVE_GL, 1, [Defines if you have GL (Mesa, OpenGL, ...)])
     if test "$GL_LDFLAGS" = ""; then
-       GLLIB='-lGLU -lGL $(LIB_X11)'
+       GLLIB='-L/usr/lib/mesa -lGLU -lGL $(LIB_X11)'
     else
-       GLLIB="$GL_LDFLAGS -lGLU -lGL "'$(LIB_X11)'
+       GLLIB="$GL_LDFLAGS -L/usr/lib/mesa -lGLU -lGL "'$(LIB_X11)'
     fi
     if test "$GL_INCLUDE" = ""; then
        GLINC=""