Allow compilation directly from git.

Fixes #89. Make sure to add submodules: true to your Gemfile.

.travis.yml

@@ -7,5 +7,3 @@ notifications:
   recipients:
     - cowboyd@thefrontside.net
     - bordjukov@gmail.com
-before_install:
-  - sudo apt-get install subversion

Rakefile

@@ -15,31 +15,17 @@ V8_Source = File.expand_path '../vendor/v8', __FILE__
 require File.expand_path '../ext/libv8/make.rb', __FILE__
 include Libv8::Make
 
-desc "setup the vendored v8 source to correspond to the libv8 gem version and prepare deps"
+desc "setup the vendored v8 source to correspond to the libv8 gem version"
 task :checkout do
   sh "git submodule update --init"
   Dir.chdir(V8_Source) do
     sh "git fetch"
     sh "git checkout #{V8_Version} -f"
-    sh "#{make} dependencies"
-  end
-end
-
-desc "apply the libv8 gem patches to the vendored v8 source"
-task :patch do
-  File.open("#{V8_Source}/.applied_patches", File::RDWR|File::CREAT) do |f|
-    available_patches = Dir.glob('patches/*.patch').sort
-    applied_patches = f.readlines.map(&:chomp)
-
-    (available_patches - applied_patches).each do |patch|
-      sh "patch -p1 -N -d vendor/v8 < #{patch}"
-      f.puts patch
-    end
   end
 end
 
 desc "compile v8 via the ruby extension mechanism"
-task :compile => :patch do
+task :compile do
   sh "ruby ext/libv8/extconf.rb"
 end
 
@@ -103,4 +89,4 @@ task :vulcan => directory("tmp/vulcan") do
 end
 
 task :default => [:checkout, :compile, :spec]
-task :build => [:clean, :checkout, :patch]
+task :build => [:clean, :checkout]

ext/libv8/builder.rb

@@ -34,6 +34,8 @@ module Libv8
     def build_libv8!
       Dir.chdir(File.expand_path '../../../vendor/v8', __FILE__) do
         setup_python!
+        setup_build_deps!
+        apply_patches!
         print_build_info
         puts `env CXX=#{compiler} LINK=#{compiler} #{make} #{make_flags}`
       end
@@ -54,6 +56,25 @@ module Libv8
       end
     end
 
+    def setup_build_deps!
+      # This uses the Git mirror of the svn repository used by
+      # "make dependencies", instead of calling that make target
+      `rm -rf build/gyp`
+      `ln -fs #{File.expand_path '../../../vendor/gyp', __FILE__} build/gyp`
+    end
+
+    def apply_patches!
+      File.open(".applied_patches", File::RDWR|File::CREAT) do |f|
+        available_patches = Dir.glob(File.expand_path '../../../patches/*.patch', __FILE__).sort
+        applied_patches = f.readlines.map(&:chomp)
+
+        (available_patches - applied_patches).each do |patch|
+          `patch -p1 -N < #{patch}`
+          f.puts patch
+        end
+      end
+    end
+
     private
 
     def python_version

libv8.gemspec

@@ -21,6 +21,9 @@ Gem::Specification.new do |s|
     `git ls-files`.split("\n").reject {|f| f =~ /^out/}.map {|f| "vendor/v8/#{f}"}
   end
   s.files += Dir['vendor/v8/build/**/*']
+  s.files += Dir.chdir("vendor/gyp") do
+    `git ls-files`.split("\n").map {|f| "vendor/gyp/#{f}"}
+  end
 
   s.extensions = ["ext/libv8/extconf.rb"]
   s.require_paths = ["lib", "ext"]