travis: enable warnings also in release mode

... to get warnings also on Linux/GCC and OSX/clang.

Closes https://github.com/curl/curl/pull/1666

diff --git a/.travis.yml b/.travis.yml
index 8d296cb160965cb0a664af0c8efd9b133d1dcc06..04e4729e1a84f2de69c2de5cea6f6ba2e4e29603 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -81,7 +81,7 @@ script:
         fi
     - |
         if [ "$BUILD_TYPE" = "normal" ]; then
-             ./configure --enable-werror
+             ./configure --enable-warnings --enable-werror
              make
              make test-nonflaky
         fi