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name: Install GCC
description: Install GCC

inputs:
  platform:
    description: Target platform
    required: false
    default: x64
  cygwin:
    description: Install inside Cygwin
    required: false
    default: 0

runs:
  using: composite
  steps:
    - id: setup
      run: |
        New-Variable os -Value '${{ runner.os }}' -Option Constant

        New-Variable linux_host -Value ($os -eq 'Linux') -Option Constant
        New-Variable cygwin_host -Value ('${{ inputs.cygwin }}' -eq '1') -Option Constant
        New-Variable windows_host -Value ($os -eq 'Windows' -and !$cygwin) -Option Constant

        New-Variable x64 -Value ('${{ inputs.platform }}' -eq 'x64') -Option Constant

        function Locate-Choco {
            $path = Get-Command 'choco' -ErrorAction SilentlyContinue
            if ($path) {
                $path.Path
            } else {
                Join-Path ${env:ProgramData} 'chocolatey' 'bin' 'choco'
            }
        }

        if ($linux_host) {
            sudo apt update
            if ($x64) {
                sudo apt install -y g++
            } else {
                sudo apt install -y g++-multilib
            }
        } elseif ($cygwin_host) {
            if (!$x64) {
                echo @'
        ::warning ::
        32-bit-targeting GCC is unstable and/or unmaintained on 64-bit Cygwin.
        Please use 32-bit Cygwin instead.
        If you _are_ using 32-bit Cygwin, you can ignore this message.
        '@
            }
            $choco = Locate-Choco
            & $choco install -y --no-progress --source=cygwin gcc-g++
        } elseif ($windows_host) {
            # TODO: use setup-mingw when calling composite actions within
            # composite actions is implemented.
            echo @'
        ::error ::
        Please use the egor-tensin/setup-mingw action to install GCC on Windows.
        '@
            exit 1
        } else {
            throw "Sorry, installing GCC is unsupported on $os"
        }
      shell: pwsh

branding:
  icon: star
  color: green