Support parallel builds on the CI pipeline

.github/workflows/cmake-single-platform.yml

@@ -1,5 +1,3 @@
-# This starter workflow is for a CMake project running on a single platform. There is a different starter workflow if you need cross-platform coverage.
-# See: https://github.com/actions/starter-workflows/blob/main/ci/cmake-multi-platform.yml
 name: CMake on a single platform
 
 on:
@@ -9,14 +7,11 @@ on:
     branches: [ "main" ]
 
 env:
-  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
   BUILD_TYPE: Release
+  CPU_COUNT: ${{ github.actions_runner.total_cores }}
 
 jobs:
   build:
-    # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
-    # You can convert this to a matrix build if you need cross-platform coverage.
-    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
     runs-on: ubuntu-latest
 
     steps:
@@ -28,17 +23,12 @@ jobs:
       run: git submodule update --init --recursive
 
     - name: Configure CMake
-      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
-      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
       run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
 
     - name: Build
-      # Build your program with the given configuration
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j${{env.CPU_COUNT}}
 
     - name: Test
       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 ${{env.BUILD_TYPE}}