--- a/configure Tue Apr 25 01:35:13 2017 +0200 +++ b/configure Tue Apr 25 21:46:46 2017 +0200 @@ -297,6 +297,9 @@ --cflags) CFLAGS="$value" ;; + --add-cflags) + CFLAGS="$CFLAGS $value" + ;; --ldflags) LDFLAGS="$value" ;;