gem 'rake-compiler', '~> 0.7.1' require "rake/extensiontask" MYSQL_VERSION = "5.1.51" MYSQL_MIRROR = ENV['MYSQL_MIRROR'] || "http://mysql.he.net/" def gemspec @clean_gemspec ||= eval(File.read(File.expand_path('../../mysql2.gemspec', __FILE__))) end Rake::ExtensionTask.new("mysql2", gemspec) do |ext| # reference where the vendored MySQL got extracted mysql_lib = File.expand_path(File.join(File.dirname(__FILE__), '..', 'vendor', "mysql-#{MYSQL_VERSION}-win32")) # DRY options feed into compile or cross-compile process windows_options = [ "--with-mysql-include=#{mysql_lib}/include", "--with-mysql-lib=#{mysql_lib}/lib/opt" ] # automatically add build options to avoid need of manual input if RUBY_PLATFORM =~ /mswin|mingw/ then ext.config_options = windows_options else ext.cross_compile = true ext.cross_platform = ['x86-mingw32', 'x86-mswin32-60'] ext.cross_config_options = windows_options # inject 1.8/1.9 pure-ruby entry point when cross compiling only ext.cross_compiling do |spec| spec.files << 'lib/mysql2/mysql2.rb' end end ext.lib_dir = File.join 'lib', 'mysql2' # clean compiled extension CLEAN.include "#{ext.lib_dir}/*.#{RbConfig::CONFIG['DLEXT']}" end Rake::Task[:spec].prerequisites << :compile file 'lib/mysql2/mysql2.rb' do |t| name = gemspec.name File.open(t.name, 'wb') do |f| f.write <<-eoruby RUBY_VERSION =~ /(\\d+.\\d+)/ require "#{name}/\#{$1}/#{name}" eoruby end end if Rake::Task.task_defined?(:cross) Rake::Task[:cross].prerequisites << "lib/mysql2/mysql2.rb" end