;;
esac
+AC_ARG_WITH(large-heap, [ --with-large-heap=yes,no Enable support for GC heaps larger than 3GB], [large_heap=$withval], [large_heap=no])
+if test "x$large_heap" = "xyes"; then
+ echo "FOO"
+ CPPFLAGS="$CPPFLAGS -DLARGE_CONFIG"
+fi
# tell libgc/configure about what we want
ac_configure_args="$ac_configure_args --disable-embed-check --with-libgc-threads=$libgc_threads"