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Class: Gem::Ext::ExtConfBuilder

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Builder
Instance Chain:
Inherits: Gem::Ext::Builder
Defined in: lib/rubygems/ext/ext_conf_builder.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Builder - Inherited

#build_extensions

Builds extensions.

::Gem::UserInteraction - Included

#alert

Displays an alert statement.

#alert_error

Displays an error statement to the error output location.

#alert_warning

Displays a warning statement to the warning output location.

#ask

Asks a question and returns the answer.

#ask_for_password

Asks for a password with a prompt

#ask_yes_no

Asks a yes or no question.

#choose_from_list

Asks the user to answer question with an answer from the given list.

#say

Displays the given statement on the standard output (or equivalent).

#terminate_interaction

Terminates the RubyGems process with the given exit_code

#verbose

Calls say with msg or the results of the block if really_verbose is true.

::Gem::DefaultUserInteraction - Included

Constructor Details

This class inherits a constructor from Gem::Ext::Builder

Class Method Details

.build(extension, directory, dest_path, results, args = [], lib_dir = nil)

[ GitHub ]

  
# File 'lib/rubygems/ext/ext_conf_builder.rb', line 14

def self.build(extension, directory, dest_path, results, args=[], lib_dir=nil)
  tmp_dest = Dir.mktmpdir(".gem.", ".")

  # Some versions of `mktmpdir` return absolute paths, which will break make
  # if the paths contain spaces. However, on Ruby 1.9.x on Windows, relative
  # paths cause all C extension builds to fail.
  #
  # As such, we convert to a relative path unless we are using Ruby 1.9.x on
  # Windows. This means that when using Ruby 1.9.x on Windows, paths with
  # spaces do not work.
  #
  # Details: https://github.com/rubygems/rubygems/issues/977#issuecomment-171544940
  #
  # TODO: Make this unconditional when rubygems no longer supports Ruby 1.9.x.
  tmp_dest = get_relative_path(tmp_dest) unless Gem.win_platform? && RUBY_VERSION <= '2.0'

  t = nil
  Tempfile.open %w"siteconf .rb", "." do |siteconf|
    t = siteconf
    siteconf.puts "require 'rbconfig'"
    siteconf.puts "dest_path = #{tmp_dest.dump}"
    %w[sitearchdir sitelibdir].each do |dir|
      siteconf.puts "RbConfig::MAKEFILE_CONFIG['#{dir}'] = dest_path"
      siteconf.puts "RbConfig::CONFIG['#{dir}'] = dest_path"
    end

    siteconf.flush

    destdir = ENV["DESTDIR"]

    begin
      cmd = [Gem.ruby, "-r", get_relative_path(siteconf.path), File.basename(extension), *args].join ' '

      begin
        run cmd, results
      ensure
        if File.exist? 'mkmf.log'
          results << "To see why this extension failed to compile, please check" \
            " the mkmf.log which can be found here:\n"
          results << "  " + File.join(dest_path, 'mkmf.log') + "\n"
          FileUtils.mv 'mkmf.log', dest_path
        end
        siteconf.unlink
      end

      ENV["DESTDIR"] = nil

      make dest_path, results

      if tmp_dest
        # TODO remove in RubyGems 3
        if Gem.install_extension_in_lib and lib_dir then
          FileUtils.mkdir_p lib_dir
          entries = Dir.entries(tmp_dest) - %w[. ..]
          entries = entries.map { |entry| File.join tmp_dest, entry }
          FileUtils.cp_r entries, lib_dir, :remove_destination => true
        end

        FileEntry.new(tmp_dest).traverse do |ent|
          destent = ent.class.new(dest_path, ent.rel)
          destent.exist? or FileUtils.mv(ent.path, destent.path)
        end
      end
    ensure
      ENV["DESTDIR"] = destdir
    end
  end
  t.unlink if t and t.path

  results
ensure
  FileUtils.rm_rf tmp_dest if tmp_dest
end

.get_relative_path(path) (private)

[ GitHub ]

  
# File 'lib/rubygems/ext/ext_conf_builder.rb', line 89

def self.get_relative_path(path)
  path[0..Dir.pwd.length-1] = '.' if path.start_with?(Dir.pwd)
  path
end