Update CI config

.github/workflows/linux.yml

@@ -7,20 +7,26 @@ jobs:
     runs-on: ubuntu-18.04
     strategy:
       matrix:
-        cxx: [g++-8, clang++]
+        cxx: [g++-4.8, g++-8, g++-10, clang++]
         build_type: [Debug, Release]
 
     steps:
     - uses: actions/checkout@v2
 
+    - name: Install GCC
+      if: matrix.cxx == 'g++-4.8'
+      run: sudo apt install g++-4.8
+
     - name: Create Build Environment
       run: cmake -E make_directory ${{runner.workspace}}/build
 
-    - name: Configure CMake
+    - name: Configure
       working-directory: ${{runner.workspace}}/build
       env:
         CXX: ${{matrix.cxx}}
-      run: cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} $GITHUB_WORKSPACE
+      run: |
+        cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
+              -DFMT_DOC=OFF -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE
 
     - name: Build
       working-directory: ${{runner.workspace}}/build

.github/workflows/macos.yml

@@ -15,9 +15,11 @@ jobs:
     - name: Create Build Environment
       run: cmake -E make_directory ${{runner.workspace}}/build
 
-    - name: Configure CMake
+    - name: Configure
       working-directory: ${{runner.workspace}}/build
-      run: cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} $GITHUB_WORKSPACE
+      run: |
+        cmake -DCMAKE_BUILD_TYPE=${{matrix.build_type}} \
+              -DFMT_DOC=OFF -DFMT_PEDANTIC=ON -DFMT_WERROR=ON $GITHUB_WORKSPACE
 
     - name: Build
       working-directory: ${{runner.workspace}}/build

.github/workflows/windows.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Create Build Environment
       run: cmake -E make_directory ${{runner.workspace}}/build
 
-    - name: Configure CMake
+    - name: Configure
       # Use a bash shell for $GITHUB_WORKSPACE.
       shell: bash
       working-directory: ${{runner.workspace}}/build