move to full checkout of the v8 source

.gitignore

@@ -12,3 +12,6 @@ lib/libv8/VERSION
 /ext/libv8/.location.yml
 /release/**/libv8
 /release/**/.vagrant
+/vendor/.gclient
+/vendor/.gclient_entries
+/vendor/v8/

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "vendor/v8"]
-	path = vendor/v8
-	url = https://chromium.googlesource.com/v8/v8.git
 [submodule "vendor/depot_tools"]
 	path = vendor/depot_tools
 	url = https://chromium.googlesource.com/chromium/tools/depot_tools.git

Rakefile

@@ -74,8 +74,9 @@ end
 desc "clean up artifacts of the build"
 task :clean => [:clean_submodules] do
   sh "rm -rf pkg"
+  sh "rm -rf vendor/v8"
   sh "git clean -dxf"
 end
 
 task :default => [:compile, :spec]
-task :build => [:clean_submodules]
+task :build => [:clean]

ext/libv8/builder.rb

@@ -1,4 +1,8 @@
+unless $:.include? File.expand_path("../../../lib", __FILE__)
+  $:.unshift File.expand_path("../../../lib", __FILE__)
+end
 require 'mkmf'
+require 'libv8/version'
 require File.expand_path '../compiler', __FILE__
 require File.expand_path '../arch', __FILE__
 require File.expand_path '../make', __FILE__
@@ -51,10 +55,10 @@ module Libv8
     end
 
     def build_libv8!
+      setup_python!
+      setup_build_deps!
       Dir.chdir(File.expand_path('../../../vendor/v8', __FILE__)) do
         fail 'No compilers available' if @compiler.nil?
-        setup_python!
-        setup_build_deps!
         patch!
         print_build_info
         puts 'Beginning compilation. This will take some time.'
@@ -77,9 +81,30 @@ module Libv8
       end
     end
 
+    ##
+    # The release tag to checkout. If this is version 4.5.95.0 of the libv8 gem,
+    # then this will be 4.5.95
+    #
+    def source_version
+      Libv8::VERSION.gsub(/\.\d+$/, '')
+    end
+
+    ##
+    # Checkout all of the V8 source and its dependencies using the
+    # chromium depot tools.
+    #
+    # https://chromium.googlesource.com/v8/v8.git#Getting-the-Code
+    #
     def setup_build_deps!
+      fetch = File.expand_path('../../../vendor/depot_tools/fetch', __FILE__)
       gclient = File.expand_path('../../../vendor/depot_tools/gclient', __FILE__)
-      `#{gclient} sync`
+      Dir.chdir(File.expand_path('../../../vendor', __FILE__)) do
+        `#{fetch} v8`
+        Dir.chdir('v8') do
+          `git checkout #{source_version}`
+          `#{gclient} sync`
+        end
+      end
     end
 
     private

libv8.gemspec

@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   submodules = `git submodule --quiet foreach 'echo $path'`.split("\n").map(&:chomp)
   submodules.each do |submodule|
     s.files += Dir.chdir(submodule) do
-      `git ls-files`.split("\n").reject {|f| f =~ /^out|^test|^benchmarks/}.map {|f| "#{submodule}/#{f}"}
+      `git ls-files`.split("\n").map {|f| "#{submodule}/#{f}"}
     end
   end
 

vendor/.gclient

@@ -1,11 +0,0 @@
-solutions = [
-  { "name"        : "v8",
-    "url"         : "https://chromium.googlesource.com/v8/v8.git",
-    "deps_file"   : "DEPS",
-    "managed"     : True,
-    "custom_deps" : {
-    },
-    "safesync_url": "",
-  },
-]
-cache_dir = None

vendor/.gclient_entries

@@ -1,12 +0,0 @@
-entries = {
-  'v8': 'https://chromium.googlesource.com/v8/v8.git',
-  'v8/build/gyp': 'https://chromium.googlesource.com/external/gyp.git@5122240c5e5c4d8da12c543d82b03d6089eb77c5',
-  'v8/buildtools': 'https://chromium.googlesource.com/chromium/buildtools.git@ecc8e253abac3b6186a97573871a084f4c0ca3ae',
-  'v8/testing/gmock': 'https://chromium.googlesource.com/external/googlemock.git@29763965ab52f24565299976b936d1265cb6a271',
-  'v8/testing/gtest': 'https://chromium.googlesource.com/external/googletest.git@23574bf2333f834ff665f894c97bef8a5b33a0a9',
-  'v8/third_party/icu': 'https://chromium.googlesource.com/chromium/deps/icu.git@7fe225d77f307fdbe24695179a84336ef95c1253',
-  'v8/tools/clang': 'https://chromium.googlesource.com/chromium/src/tools/clang.git@73ec8804ed395b0886d6edf82a9f33583f4a7902',
-  'v8/buildtools/clang_format/script': 'https://chromium.googlesource.com/chromium/llvm-project/cfe/tools/clang-format.git@81edd558fea5dd7855d67a1dc61db34ae8c1fd63',
-  'v8/buildtools/third_party/libc++/trunk': 'https://chromium.googlesource.com/chromium/llvm-project/libcxx.git@48198f9110397fff47fe7c37cbfa296be7d44d3d',
-  'v8/buildtools/third_party/libc++abi/trunk': 'https://chromium.googlesource.com/chromium/llvm-project/libcxxabi.git@4ad1009ab3a59fa7a6896d74d5e4de5885697f95',
-}

vendor/v8

@@ -1 +0,0 @@
-Subproject commit b0493ed16c0b363a0e92bf4a790d4fd851c74e70