add compiler to build-and-test and create min-cmake CI bot (#1550)

* add compiler to build-and-test and create min-cmake CI bot

* fix CXX env var

* downgrade msvc generator for cmake-3.10

* assume windows users have the latest cmake

.github/workflows/build-and-test-min-cmake.yml

@@ -0,0 +1,46 @@
+name: build-and-test-min-cmake
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  job:
+    name: ${{ matrix.os }}.min-cmake
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: lukka/get-cmake@latest
+        with:
+          cmakeVersion: 3.10.0
+
+      - name: create build environment
+        run: cmake -E make_directory ${{ runner.workspace }}/_build
+
+      - name: setup cmake initial cache
+        run: touch compiler-cache.cmake
+
+      - name: configure cmake
+        env:
+          CXX: ${{ matrix.compiler }}
+        shell: bash
+        working-directory: ${{ runner.workspace }}/_build
+        run: >
+          cmake -C ${{ github.workspace }}/compiler-cache.cmake
+          $GITHUB_WORKSPACE
+          -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON
+          -DCMAKE_CXX_VISIBILITY_PRESET=hidden
+          -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON
+
+      - name: build
+        shell: bash
+        working-directory: ${{ runner.workspace }}/_build
+        run: cmake --build .

.github/workflows/build-and-test.yml

@@ -19,12 +19,14 @@ jobs:
       matrix:
         os: [ubuntu-22.04, ubuntu-20.04, macos-latest]
         build_type: ['Release', 'Debug']
-        compiler: [g++, clang++]
+        compiler: ['g++', 'clang++']
         lib: ['shared', 'static']
 
     steps:
       - uses: actions/checkout@v3
 
+      - uses: lukka/get-cmake@latest
+
       - name: create build environment
         run: cmake -E make_directory ${{ runner.workspace }}/_build
 
@@ -42,6 +44,7 @@ jobs:
           -DBENCHMARK_DOWNLOAD_DEPENDENCIES=ON
           -DBUILD_SHARED_LIBS=${{ matrix.lib == 'shared' }}
           -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
+          -DCMAKE_CXX_COMPILER=${{ env.CXX }}
           -DCMAKE_CXX_VISIBILITY_PRESET=hidden
           -DCMAKE_VISIBILITY_INLINES_HIDDEN=ON
 
@@ -86,6 +89,8 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - uses: lukka/get-cmake@latest
+
       - name: configure cmake
         run: >
           cmake -S . -B _build/