diff --git a/configure b/configure
index 08f631eec..a81c7eb94 100755
--- a/configure
+++ b/configure
@@ -297,6 +297,9 @@ do
    --cflags)
       CFLAGS="$value"
       ;;
+   --add-cflags)
+      CFLAGS="$CFLAGS $value"
+      ;;
    --ldflags)
       LDFLAGS="$value"
       ;;