ci: raise error when Meson generates warnings

Meson prints warnings in several cases, like for example when using a
feature supported by the current version of Meson, but not yet supported
by the minimum required version as declared by the project. These
warnings will not cause the setup to fail by default, which makes it
quite easy to miss them.

Improve this by passing `--fatal-meson-warnings` to `meson setup` so
that our CI jobs will fail on warnings.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
index 6c828c3b755153dab179f73346e7124bda49c90e..964322055f5db0eae0c794b543664e24ae4249f7 100755 (executable)
--- a/ci/run-build-and-tests.sh
+++ b/ci/run-build-and-tests.sh
@@ -52,6 +52,7 @@ esac
 case "$jobname" in
 *-meson)
        group "Configure" meson setup build . \
+               --fatal-meson-warnings \
                --warnlevel 2 --werror \
                --wrap-mode nofallback \
                -Dfuzzers=true