Add debug/release variants and gcc/clang compilers to CI

Author: BlackMark29A

.github/workflows/libenvpp_ci.yml

@@ -2,28 +2,57 @@ name: Libenvpp CI
 
 on: [push, pull_request]
 
-env:
-  BUILD_TYPE: Debug
-
 jobs:
   build-and-test:
     strategy:
       matrix:
+        build-type: [Debug, Release]
+        compiler: [g++, clang++]
         os: [ubuntu-latest, ubuntu-20.04, windows-latest, macos-latest]
 
     runs-on: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    - name: Configure CMake
+      run: cmake -B ${{ github.workspace }}/build_${{ matrix.compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build-type }} -DCMAKE_CXX_COMPILER=${{ matrix.compiler }}
+
+    - name: Build
+      run: cmake --build ${{ github.workspace }}/build_${{ matrix.compiler }} --config ${{ matrix.build-type }}
+
+    - name: Run tests
+      working-directory: ${{ github.workspace }}/build_${{ matrix.compiler }}
+      run: ctest -C ${{ matrix.build-type }}
+
+  build-and-test-mingw:
+    strategy:
+      matrix:
+        build-type: [Debug, Release]
+        compiler: [g++, clang++]
+        os: [windows-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: msys2/setup-msys2@v2
+      with:
+        install: mingw-w64-x86_64-cmake
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
     - name: Configure CMake
-      run: cmake -B ${{ github.workspace }}/build -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }}
+      shell: msys2 {0}
+      run: cmake -B ${{ github.workspace }}/build_${{ matrix.compiler }} -DCMAKE_BUILD_TYPE=${{ matrix.build-type }} -DCMAKE_CXX_COMPILER=${{ matrix.compiler }}
 
     - name: Build
-      run: cmake --build ${{ github.workspace }}/build --config ${{ env.BUILD_TYPE }}
+      shell: msys2 {0}
+      run: cmake --build ${{ github.workspace }}/build_${{ matrix.compiler }} --config ${{ matrix.build-type }}
 
     - name: Run tests
-      working-directory: ${{ github.workspace }}/build
-      run: ctest -C ${{ env.BUILD_TYPE }}
+      shell: msys2 {0}
+      working-directory: ${{ github.workspace }}/build_${{ matrix.compiler }}
+      run: ctest -C ${{ matrix.build-type }}