name: "Configure gcc"
description: "Installs and configures gcc in a specific version on an ubuntu image"
inputs:
  gcc_version:
    description: "The version of gcc to install. Must be the major version only."
    required: true
  enable_x86:
    description: "Whether to enable x86 support."
    default: "false"
runs:
  using: "composite"
  steps:
    - name: Install g++ and multilib
      shell: bash
      run: |
        apt-get update
        apt-get install -y gcc-${{ inputs.gcc_version }} g++-${{ inputs.gcc_version }} ${ADDITIONAL_PACKAGES}
      env:
        ADDITIONAL_PACKAGES: ${{ case(inputs.enable_x86 == 'true', format('gcc-{0}-multilib g++-{0}-multilib', inputs.gcc_version), '') }}

    - name: Configure gcc
      shell: bash
      run: |
        function register_gcc_version {
            local version=$1
            local priority=$2

            update-alternatives \
                --verbose \
                --install /usr/bin/gcc gcc /usr/bin/gcc-${version} ${priority} \
                --slave   /usr/bin/g++ g++ /usr/bin/g++-${version}
        }

        register_gcc_version ${{ inputs.gcc_version }} 100