build do
  debug = Environment.new(echo: :command) do |env|
    env['CFLAGS'] = '-O2'
    env['CPPFLAGS'] = '-DSTRING="Debug Version"'
    env.Program('program-debug.exe', Dir['src/*.c'])
  end

  release = debug.clone do |env|
    env["CPPFLAGS"] = '-DSTRING="Release Version"'
    env.Program('program-release.exe', Dir['src/*.c'])
  end
end
