added windows builds, extend to multiple compiler

Author: Stephan Kantelberg

.github/workflows/build_cmake.yml

@@ -18,6 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
+        compiler: [ {cpp: g++-10, c: gcc-10}, {cpp: g++-11, c: gcc-11}, {cpp: clang++-10, c: clang-10}, {cpp: clang++-11, c: clang-11}, {cpp: clang++-12, c: clang-12} ]
 
     steps:
     - uses: actions/checkout@v2
@@ -37,6 +38,11 @@ jobs:
       # We'll use this as our working directory for all subsequent commands
       run: cmake -E make_directory ${{runner.workspace}}/build
 
+    - run:   |
+             sudo apt update
+             sudo apt install gcc-11 g++-11 clang-12 llvm-12
+      shell: bash
+
     - name: Install conan
       shell: bash
       run: |
@@ -49,6 +55,9 @@ jobs:
       # access regardless of the host operating system
       shell: bash
       working-directory: ${{runner.workspace}}/build
+      env:
+        CC: ${{ matrix.compiler.c }}
+        CXX: ${{ matrix.compiler.cpp }}
       # Note the current convention is to use the -S and -B options here to specify source
       # and build directories, but this is only available with CMake 3.13 and higher.
       # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
@@ -70,3 +79,41 @@ jobs:
       # Execute tests defined by the CMake configuration.
       # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
       run: ctest -C $BUILD_TYPE
+  windows:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-latest, windows-2019]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install conan
+        shell: bash
+        run: |
+          python3 -m pip install --upgrade pip setuptools
+          python3 -m pip install conan jinja2
+      - name: Create Build Environment
+        # Some projects don't allow in-source building, so create a separate build directory
+        # We'll use this as our working directory for all subsequent commands
+        run: cmake -E make_directory ${{github.workspace}}/build
+      - name: Configure CMake
+        # Use a bash shell so we can use the same syntax for environment variable
+        shell: bash
+        # access regardless of the host operating system
+        working-directory: ${{github.workspace}}/build
+        # Note the current convention is to use the -S and -B options here to specify source
+        # and build directories, but this is only available with CMake 3.13 and higher.
+        # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
+        #
+        # We need to source the profile file to make sure conan is in PATH
+        run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE
+      - name: Build
+        shell: bash
+        working-directory: ${{github.workspace}}/build
+        # Execute the build.  You can specify a specific target with "--target <NAME>"
+        run: cmake --build . --config $BUILD_TYPE
+      - name: Test
+        shell: bash
+        working-directory: ${{github.workspace}}/build
+        # Execute tests defined by the CMake configuration.
+        # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
+        run: ctest -C $BUILD_TYPE