class PackageConfig

def search_pkg_config_from_path(pkg_config) 

def search_pkg_config_from_path(pkg_config)
  (ENV["PATH"] || "").split(SEPARATOR).each do |path|
    try_pkg_config = Pathname(path) + pkg_config
    return try_pkg_config if try_pkg_config.exist?
  end
  nil
end