Initial version!

.gitignore

@@ -0,0 +1,5 @@
+*.gem
+.bundle
+Gemfile.lock
+pkg/*
+tmp/*

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "ext/libv8/v8"]
+	path = ext/libv8/v8
+	url = https://github.com/v8/v8.git

Gemfile

@@ -0,0 +1,4 @@
+source "http://rubygems.org"
+
+# Specify your gem's dependencies in libv8.gemspec
+gemspec

Rakefile

@@ -0,0 +1,32 @@
+require 'bundler'
+require 'bundler/setup'
+
+# require "rake/extensiontask"
+
+Bundler::GemHelper.install_tasks
+
+# desc "remove all generated artifacts except built v8 objects"
+# task :clean do
+#   sh "rm -rf pkg"
+#   sh "rm -rf ext/v8/Makefile"
+#   sh "rm -rf ext/v8/*.bundle ext/v8/*.so"
+#   sh "rm -rf lib/v8/*.bundle lib/v8/*.so"
+# end
+# 
+# desc "build v8 with debugging symbols (much slower)"
+# task "v8:debug" do
+#   sh "cd ext/v8/upstream && make debug"
+# end
+
+# Rake::ExtensionTask.new("libv8", eval(File.read("libv8.gemspec"))) do |ext|
+#   ext.lib_dir = "lib/libv8"
+# end
+
+desc "Compile the V8 JavaScript engine"
+task "compile" do
+  Dir.chdir(File.join('lib', 'libv8')) do
+    puts "Compiling V8..."
+    $stdout.flush
+    `make`
+  end
+end

ext/libv8/extconf.rb

@@ -0,0 +1,10 @@
+require 'mkmf'
+require 'pathname'
+
+puts "Compiling V8..."
+
+Dir.chdir(Pathname(__FILE__).dirname.join('..', '..', 'lib', 'libv8')) do
+  `make`
+end
+
+create_makefile('libv8')

lib/libv8.rb

@@ -0,0 +1,9 @@
+require 'pathname'
+
+require 'libv8/version'
+
+module Libv8
+  def self.LIB_PATH
+    Pathname(__FILE__).dirname.join('libv8', 'build', 'v8', 'libv8.a')
+  end
+end

lib/libv8/Makefile

@@ -0,0 +1,37 @@
+
+SCONS=build/scons/install/bin/scons
+SCONSSRC=build/scons
+V8SRC=build/v8
+LIBV8=build/v8/libv8.a
+LIBV8_G=build/v8/libv8_g.a
+GCC_VERSION=$(shell ruby -e 'puts %x{gcc --version} =~ /(\d)\.(\d)\.\d/ ? $$1 + $$2 : "UNKNOWN"')
+ARCH=$(shell ruby detect_cpu.rb)
+
+all: $(LIBV8)
+
+debug: $(LIBV8_G)
+	cp $(LIBV8_G) $(LIBV8)
+
+$(LIBV8): $(SCONS) $(V8SRC)
+	cd build/v8 && GCC_VERSION=$(GCC_VERSION) ../scons/install/bin/scons arch=$(ARCH)
+
+$(LIBV8_G): $(SCONS) $(V8SRC)
+	cd build/v8 && GCC_VERSION=$(GCC_VERSION) ../scons/install/bin/scons arch=$(ARCH) mode=debug
+
+$(SCONS): $(SCONSSRC)
+	mkdir -p $(SCONSSRC)/install
+	python build/scons/setup.py install --prefix=install
+
+$(V8SRC): build
+	cp -r v8 build
+
+$(SCONSSRC): build
+	cp -r scons build
+
+build:
+	mkdir -p build
+
+scons: $(SCONS)
+
+clean:
+	rm -rf build

lib/libv8/detect_cpu.rb

@@ -0,0 +1,27 @@
+require 'rbconfig'
+
+def x86_64_from_build_cpu
+  RbConfig::MAKEFILE_CONFIG['build_cpu'] == 'x86_64'
+end
+
+def x86_64_from_byte_length
+  ['foo'].pack('p').size == 8 
+end
+
+def x86_64_from_arch_flag
+  RbConfig::MAKEFILE_CONFIG['ARCH_FLAG'] =~ /x86_64/
+end
+
+def rubinius?
+  Object.const_defined?(:RUBY_ENGINE) && RUBY_ENGINE == "rbx"
+end
+
+def x64?
+  if rubinius?
+    x86_64_from_build_cpu || x86_64_from_arch_flag
+  else
+    x86_64_from_byte_length
+  end
+end
+
+puts x64? ? "x64" : "ia32"