Gem::Ext::Builder.make

# File tmp/rubies/ruby-3.1.3/lib/rubygems/ext/builder.rb, line 20
def self.make(dest_path, results, make_dir = Dir.pwd, sitedir = nil)
  unless File.exist? File.join(make_dir, "Makefile")
    raise Gem::InstallError, "Makefile not found"
  end

  # try to find make program from Ruby configure arguments first
  RbConfig::CONFIG["configure_args"] =~ /with-make-prog\=(\w+)/
  make_program_name = ENV["MAKE"] || ENV["make"] || $1
  unless make_program_name
    make_program_name = (/mswin/ =~ RUBY_PLATFORM) ? "nmake" : "make"
  end
  make_program = Shellwords.split(make_program_name)

  # The installation of the bundled gems is failed when DESTDIR is empty in mswin platform.
  destdir = (/\bnmake/i !~ make_program_name || ENV["DESTDIR"] && ENV["DESTDIR"] != "") ? "DESTDIR=%s" % ENV["DESTDIR"] : ""

  env = [destdir]

  if sitedir
    env << "sitearchdir=%s" % sitedir
    env << "sitelibdir=%s" % sitedir
  end

  ["clean", "", "install"].each do |target|
    # Pass DESTDIR via command line to override what's in MAKEFLAGS
    cmd = [
      *make_program,
      *env,
      target,
    ].reject(&:empty?)
    begin
      run(cmd, results, "make #{target}".rstrip, make_dir)
    rescue Gem::InstallError
      raise unless target == "clean" # ignore clean failure
    end
  end
end