fake:

package/jimmy/mplayer/mplayer.conf

@@ -73,7 +73,7 @@ var_append confopt " " "--enable-linux-devfs --enable-menu \
 --with-extraincdir=/usr/include/libpng \
 --enable-fbdev --enable-largefiles --enable-shared-pp"
 
-if [ $arch = x86 ] ; then
+if [ $arch = x86 -a "$ROCKCFG_X86_BITS" = "32" ] ; then
 	var_append confopt " " "--with-win32libdir=$root/$prefix/lib/win32"
 fi