gitlab-ci: Add build with clang

.gitlab-ci.yml

@@ -50,6 +50,26 @@ fedora/gcc/x86_64:
     paths:
       - obj/
 
+fedora/clang/x86_64:
+  stage: test
+  image: $CI_REGISTRY/$BUILD_IMAGES_PROJECT:$FEDORA_BUILD
+  script:
+    - mkdir -p obj && cd obj && cmake
+      -DCMAKE_C_COMPILER=clang
+      -DCMAKE_BUILD_TYPE=RelWithDebInfo
+      -DPICKY_DEVELOPER=ON
+      -DUNIT_TESTING=ON .. &&
+      make -j$(nproc) && ctest --output-on-failure
+  tags:
+    - shared
+  except:
+    - tags
+  artifacts:
+    expire_in: 1 week
+    when: on_failure
+    paths:
+      - obj/
+
 fedora/build:
   stage: build
   image: $CI_REGISTRY/$BUILD_IMAGES_PROJECT:$FEDORA_BUILD