### Monkeypatch to work around the broken Rakefile generated by Mkrf <= 0.2.3

# This fixes:

# * Some weird unnecessary string interpolation

# * The :install task doesn't work unless you have RUBYARCHDIR in your environment, instead of

#   falling back to CONFIG['sitearchdir'].

# * The :install task created the target install directory every time instead of just

#   declaring a dependency on a directory task

require 'mkrf/generator'

class Mkrf::Generator

    def rakefile_contents # :nodoc:

      objext = CONFIG['OBJEXT']

      <<-END_RAKEFILE

# Generated by mkrf

require 'rake/clean'

require 'rbconfig'

include Config

SRC = FileList[#{sources.join(',')}]

OBJ = SRC.ext('#{objext}')

CC = '#{@cc}'

ADDITIONAL_OBJECTS = '#{objects}'

LDSHARED = "#{@available.ldshared_string} #{ldshared}"

LIBPATH =  "#{library_path(CONFIG['libdir'])} #{@available.library_paths_compile_string}"

INCLUDES = "#{@available.includes_compile_string}"

LIBS = "#{@available.library_compile_string}"

CFLAGS = "#{cflags} #{defines_compile_string}"

RUBYARCHDIR = ENV["RUBYARCHDIR"] || CONFIG['sitearchdir']

LIBRUBYARG_SHARED = "#{CONFIG['LIBRUBYARG_SHARED']}"

EXT = '#{@extension_name}'

CLEAN.include( EXT, '*.#{objext}' )

CLOBBER.include( 'mkrf.log' )

task :default => EXT

rule '.#{objext}' => '.#{@source_extension}' do |t|

  sh "\#{CC} \#{CFLAGS} \#{INCLUDES} -c \#{t.source}"

end

desc "Build this extension"

file EXT => OBJ do

  sh "\#{LDSHARED} \#{LIBPATH} #{@available.ld_outfile(@extension_name)} \#{OBJ} \#{ADDITIONAL_OBJECTS} \#{LIBS} \#{LIBRUBYARG_SHARED}"

end

directory RUBYARCHDIR

desc "Install this extension"

task :install => [EXT, RUBYARCHDIR] do

  install EXT, RUBYARCHDIR, :verbose => true

end

#{additional_code}

      END_RAKEFILE

    end

end