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builder.rb
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# frozen_string_literal: true #-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require 'rubygems/user_interaction' class Gem::Ext::Builder include Gem::UserInteraction ## # The builder shells-out to run various commands after changing the # directory. This means multiple installations cannot be allowed to build # extensions in parallel as they may change each other's directories leading # to broken extensions or failed installations. CHDIR_MUTEX = Mutex.new # :nodoc: attr_accessor :build_args # :nodoc: def self.class_name name =~ /Ext::(.*)Builder/ $1.downcase end def self.make(dest_path, results) unless File.exist? '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 = ENV['MAKE'] || ENV['make'] || $1 unless make_program make_program = (/mswin/ =~ RUBY_PLATFORM) ? 'nmake' : 'make' end destdir = '"DESTDIR=%s"' % ENV['DESTDIR'] ['clean', '', 'install'].each do |target| # Pass DESTDIR via command line to override what's in MAKEFLAGS cmd = [ make_program, destdir, target ].join(' ').rstrip begin run(cmd, results, "make #{target}".rstrip) rescue Gem::InstallError raise unless target == 'clean' # ignore clean failure end end end def self.run(command, results, command_name = nil) verbose = Gem.configuration.really_verbose begin rubygems_gemdeps, ENV['RUBYGEMS_GEMDEPS'] = ENV['RUBYGEMS_GEMDEPS'], nil if verbose puts("current directory: #{Dir.pwd}") p(command) end results << "current directory: #{Dir.pwd}" results << (command.respond_to?(:shelljoin) ? command.shelljoin : command) require "open3" # Set $SOURCE_DATE_EPOCH for the subprocess. env = {'SOURCE_DATE_EPOCH' => Gem.source_date_epoch_string} output, status = Open3.capture2e(env, *command) if verbose puts output else results << output end rescue => error raise Gem::InstallError, "#{command_name || class_name} failed#{error.message}" ensure ENV['RUBYGEMS_GEMDEPS'] = rubygems_gemdeps end unless status.success? results << "Building has failed. See above output for more information on the failure." if verbose end yield(status, results) if block_given? unless status.success? exit_reason = if status.exited? ", exit code #{status.exitstatus}" elsif status.signaled? ", uncaught signal #{status.termsig}" end raise Gem::InstallError, "#{command_name || class_name} failed#{exit_reason}" end end ## # Creates a new extension builder for +spec+. If the +spec+ does not yet # have build arguments, saved, set +build_args+ which is an ARGV-style # array. def initialize(spec, build_args = spec.build_args) @spec = spec @build_args = build_args @gem_dir = spec.full_gem_path @ran_rake = false end ## # Chooses the extension builder class for +extension+ def builder_for(extension) # :nodoc: case extension when /extconf/ then Gem::Ext::ExtConfBuilder when /configure/ then Gem::Ext::ConfigureBuilder when /rakefile/i, /mkrf_conf/i then @ran_rake = true Gem::Ext::RakeBuilder when /CMakeLists.txt/ then Gem::Ext::CmakeBuilder else build_error("No builder for extension '#{extension}'") end end ## # Logs the build +output+, then raises Gem::Ext::BuildError. def build_error(output, backtrace = nil) # :nodoc: gem_make_out = write_gem_make_out output message = <<-EOF ERROR: Failed to build gem native extension. #{output} Gem files will remain installed in #{@gem_dir} for inspection. Results logged to #{gem_make_out} EOF raise Gem::Ext::BuildError, message, backtrace end def build_extension(extension, dest_path) # :nodoc: results = [] builder = builder_for(extension) extension_dir = File.expand_path File.join(@gem_dir, File.dirname(extension)) lib_dir = File.join @spec.full_gem_path, @spec.raw_require_paths.first begin FileUtils.mkdir_p dest_path CHDIR_MUTEX.synchronize do pwd = Dir.getwd Dir.chdir extension_dir begin results = builder.build(extension, dest_path, results, @build_args, lib_dir) verbose { results.join("\n") } ensure begin Dir.chdir pwd rescue SystemCallError Dir.chdir dest_path end end end write_gem_make_out results.join "\n" rescue => e results << e.message build_error(results.join("\n"), $@) end end ## # Builds extensions. Valid types of extensions are extconf.rb files, # configure scripts and rakefiles or mkrf_conf files. def build_extensions return if @spec.extensions.empty? if @build_args.empty? say "Building native extensions. This could take a while..." else say "Building native extensions with: '#{@build_args.join ' '}'" say "This could take a while..." end dest_path = @spec.extension_dir FileUtils.rm_f @spec.gem_build_complete_path @spec.extensions.each do |extension| break if @ran_rake build_extension extension, dest_path end FileUtils.touch @spec.gem_build_complete_path end ## # Writes +output+ to gem_make.out in the extension install directory. def write_gem_make_out(output) # :nodoc: destination = File.join @spec.extension_dir, 'gem_make.out' FileUtils.mkdir_p @spec.extension_dir File.open destination, 'wb' do |io| io.puts output end destination end end