[gtk/wip/otte/macos-werror: 1/9] CI: turn on -Werror for MacOS build

[Benjamin Otte <otte src gnome org>]

commit 7f8f59df3bf88d689083f325c648d4eb4d50c33b
Author: Benjamin Otte <otte redhat com>
Date:   Wed Nov 3 23:35:03 2021 +0100

    CI: turn on -Werror for MacOS build
    
    The build is error-free and we want to keep it that way.
    
    We'd also like to make Timm do real work instead of having to fix clang
    warnings all the time and this build is a clang build.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 212c857643..b7aab27c19 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -178,6 +178,7 @@ macos:
             -Dmedia-gstreamer=disabled
             -Dintrospection=disabled
             -Dcpp_std=c++11
+            -Dgtk:werror=true
             -Dpixman:tests=disabled
             _build
     - ninja -C _build