diff --git a/configure.in b/configure.in
index ce9ada780..89def36ef 100644
--- a/configure.in
+++ b/configure.in
@@ -79,7 +79,7 @@ case "$host" in
         BASE_LDFLAGS="-mno-cygwin"
         ;;
     *)
-        BASE_CFLAGS="-D_GNU_SOURCE=1"
+        BASE_CFLAGS=""
         BASE_LDFLAGS=""
         ;;
 esac