main.yml

---
# Lucena Build Abstraction Library
# “main.yml”
# Copyright © 2024 Lucena
# All Rights Reserved
#
# This file is distributed under the University of Illinois Open Source
# License. See license/License.txt for details.
#
# Configure GitHub actions for continuous integration.
#
# Based on examples presented by Cristian Adam at <https://cristianadam.eu/20191222/using-github-actions-with-c-plus-plus-and-cmake/>.
# Uses CMake as a multiplatform scripting language to simplify management.

name: Build Matrix

on: [push]

jobs:
  build:
    name: ${{ matrix.config.name }}
    runs-on: ${{ matrix.config.os }}
    strategy:
      fail-fast: false
      matrix:
        config:
        - # Currently macOS 14.6.1 and Xcode 15.3
          name: "macOS-14/Xcode/libc++"
          artifact: "macOS-AppleClang-libcpp.tar.xz"
          os: macos-14
          build_type: "Release"
          cc: "clang"
          cxx: "clang++"
        - # Currently Ubuntu 24.04 LTS and gcc 14.0.1
          name: "Ubuntu-24.04/gcc/libstdc++"
          artifact: "linux64-gcc-libstdcpp.tar.xz"
          os: ubuntu-24.04
          build_type: "Release"
          cc: "gcc"
          cxx: "g++"
        - # Currently Windows Server 2022 and MSVS 17.11
          name: "Windows-2022/MSVS/Microsoft"
          artifact: "win64-msvc-microsoft.tar.xz"
          os: windows-2022
          build_type: "Release"
          cc: "cl"
          cxx: "cl"

          # It appears we need to invoke this directly.
          environment_script: "C:/Program Files (x86)/Microsoft Visual Studio/2022/Enterprise/VC/Auxiliary/Build/vcvars64.bat"

    steps:
    - uses: actions/checkout@v4

    - name: Configure
      env:
        CC: ${{ matrix.config.cc }}
        CXX: ${{ matrix.config.cxx }}
      shell: cmake -P {0}
      run: |
        # Manually set up the shell environment for MSVS since we’re not coming
        # in through the Developer Command Prompt.
        if ("${{ runner.os }}" STREQUAL "Windows"
            AND NOT "x${{ matrix.config.environment_script }}" STREQUAL "x")
          execute_process(
            COMMAND
              "${{ matrix.config.environment_script }}" && set
            OUTPUT_FILE
              environment_script_output.txt
            RESULT_VARIABLE
              result
          )

          # if (NOT result EQUAL 0)
          #   message(FATAL_ERROR "Converting Windows env failed: ${result}")
          # endif()

          file(
            STRINGS
              environment_script_output.txt output_lines)

          foreach(line IN LISTS output_lines)
            if (line MATCHES "^([a-zA-Z0-9_-]+)=(.*)$")
              set(
                ENV{${CMAKE_MATCH_1}} "${CMAKE_MATCH_2}")
            endif()
          endforeach()
        endif()

        execute_process(
          COMMAND
            cmake
              -S .
              -B build
              -D CMAKE_BUILD_TYPE=${{ matrix.config.build_type }}
          RESULT_VARIABLE
            result
        )

        if (NOT result EQUAL 0)
          message(FATAL_ERROR "CMake configure failed: ${result}")
        endif()

    - name: Build
      shell: cmake -P {0}
      run: |
        # Manually set up the shell environment for MSVS since we’re not coming
        # in through the Developer Command Prompt.
        if ("${{ runner.os }}" STREQUAL "Windows"
            AND NOT "x${{ matrix.config.environment_script }}" STREQUAL "x")
          file(
            STRINGS
              environment_script_output.txt output_lines)

          foreach(line IN LISTS output_lines)
            if (line MATCHES "^([a-zA-Z0-9_-]+)=(.*)$")
              set(ENV{${CMAKE_MATCH_1}} "${CMAKE_MATCH_2}")
            endif()
          endforeach()
        endif()

        execute_process(
          COMMAND
            cmake --build build
          RESULT_VARIABLE
            result
        )

        if (NOT result EQUAL 0)
          message(FATAL_ERROR "Converting Windows env failed: ${result}")
        endif()


    - name: Test
      shell: cmake -P {0}
      run: |
        include(ProcessorCount)
        ProcessorCount(N)

        execute_process(
          COMMAND
            ctest -j ${N}
          WORKING_DIRECTORY
            build
          RESULT_VARIABLE
            result
        )
        if (NOT result EQUAL 0)
          message(FATAL_ERROR "Running tests failed: ${result}")
        endif()


    - name: Install Strip
      run: cmake --install build --prefix instdir --strip


    - name: Pack
      working-directory: instdir
      run: cmake -E tar cJfv ../${{ matrix.config.artifact }} .


    - name: Upload
      uses: actions/upload-artifact@v4
      with:
        path: ./${{ matrix.config.artifact }}
        name: ${{ matrix.config.artifact }}

  release:
    if: contains(github.ref, 'tags/v')
    name: Release
    runs-on: ubuntu-24.04
    needs: build

    steps:
    - name: Create Release
      id: create_release
      uses: actions/create-release@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        tag_name: ${{ github.ref }}
        release_name: Release ${{ github.ref }}
        draft: true
        prerelease: false

    - name: Store Release url
      run: |
        echo "${{ steps.create_release.outputs.upload_url }}" > ./upload_url

    - uses: actions/upload-artifact@v4
      with:
        path: ./upload_url
        name: upload_url

  publish:
    if: contains(github.ref, 'tags/v')
    name: ${{ matrix.config.name }}
    runs-on: ${{ matrix.config.os }}
    strategy:
      fail-fast: false
      matrix:
        config:
        - name: "macOS-14/Xcode/libc++"
          artifact: "macOS-AppleClang-libcpp.tar.xz"
          os: macos-14
        - name: "Ubuntu-24.04/gcc/libstdc++"
          artifact: "linux64-gcc-libstdcpp.tar.xz"
          os: ubuntu-24.04
        - name: "Windows-latest/MSVS/Microsoft"
          artifact: "win64-msvc-microsoft.tar.xz"
          os: windows-latest
    needs: release

    steps:
    - name: Download artifact
      uses: actions/download-artifact@v4
      with:
        name: ${{ matrix.config.artifact }}
        path: ./
        merge-multiple: true

    - name: Download URL
      uses: actions/download-artifact@v4
      with:
        name: upload_url
        path: ./
        merge-multiple: true
    - id: set_upload_url
      run: |
        upload_url=`cat ./upload_url`
        echo ::set-output name=upload_url::$upload_url

    - name: Upload to Release
      id: upload_to_release
      uses: actions/upload-release-asset@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        upload_url: ${{ steps.set_upload_url.outputs.upload_url }}
        asset_path: ./${{ matrix.config.artifact }}
        asset_name: ${{ matrix.config.artifact }}
        asset_content_type: application/x-gtar
...