Enable -Werror on macos builds

Author: nikic

azure/macos/job.yml

@@ -60,12 +60,13 @@ jobs:
             --enable-sysvmsg \
             --with-ffi \
             --enable-zend-test \
+            --enable-werror \
             --with-config-file-path=/etc \
             --with-config-file-scan-dir=/etc/php.d
       displayName: 'Configure Build'
     - script: |
         export PATH="/usr/local/opt/bison/bin:$PATH"
-        make -j$(sysctl -n hw.ncpu)
+        make -j$(sysctl -n hw.ncpu) >/dev/null
       displayName: 'Make Build'
     - script: |
         sudo make install