Class: Gem::Ext::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/rubygems/ext/builder.rb

Direct Known Subclasses

ConfigureBuilder, ExtConfBuilder, RakeBuilder

Constant Summary collapse

CHDIR_MUTEX =

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.

Mutex.new

Class Method Summary collapse

Class Method Details

.class_name ⇒ Object

:nodoc:



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# File 'lib/rubygems/ext/builder.rb', line 19

def self.class_name
  name =~ /Ext::(.*)Builder/
  $1.downcase
end

.make(dest_path, results) ⇒ Object 



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# File 'lib/rubygems/ext/builder.rb', line 24

def self.make(dest_path, results)
  unless File.exist? 'Makefile' then
    raise Gem::InstallError, "Makefile not found:\n\n#{results.join "\n"}"
  end

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

  destdir = '"DESTDIR=%s"' % ENV['DESTDIR'] if RUBY_VERSION > '2.0'

  ['', 'install'].each do |target|
    # Pass DESTDIR via command line to override what's in MAKEFLAGS
    cmd = [
      make_program,
      destdir,
      target
    ].join(' ').rstrip
    run(cmd, results, "make #{target}".rstrip)
  end
end

.redirector ⇒ Object 



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# File 'lib/rubygems/ext/builder.rb', line 49

def self.redirector
  '2>&1'
end

.run(command, results, command_name = nil) ⇒ Object 



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# File 'lib/rubygems/ext/builder.rb', line 53

def self.run(command, results, command_name = nil)
  results << command
  results << `#{command} #{redirector}`

  unless $?.success? then
    raise Gem::InstallError, "#{command_name || class_name} failed:\n\n#{results.join "\n"}"
  end
end