diff --git a/config.lib b/config.lib
--- a/config.lib
+++ b/config.lib
@@ -1754,7 +1754,7 @@ make_cflags_and_ldflags() {
 	fi
 
 	if [ -n "$icu_config" ]; then
-		CFLAGS="$CFLAGS -DWITH_ICU"
+		CFLAGS="$CFLAGS -DWITH_ICU_LAYOUT -DWITH_ICU_SORT"
 		CFLAGS="$CFLAGS `$icu_config --cppflags | tr '\n\r' '  '`"
 
 		# Some icu-configs have the 'feature' of not adding a space where others do add the space