class MiniPortile

def configure
  return if configured?
  FileUtils.mkdir_p(tmp_path)
  cache_file = File.join(tmp_path, 'configure.options_cache')
  File.open(cache_file, "w") { |f| f.write computed_options.to_s }
  command = Array(File.join((source_directory || "."), "configure"))
  if RUBY_PLATFORM=~/mingw|mswin/
    # Windows doesn't recognize the shebang.
    command.unshift("sh")
  end
  execute('configure', command + computed_options, altlog: "config.log")
end