support for windows with scons

Rakefile

@@ -66,6 +66,9 @@ task :binary => :compile do
   # V8
   gemspec.files += Dir['vendor/v8/include/*']
   gemspec.files += Dir['vendor/v8/out/**/*.a']
+  # SCons build
+  gemspec.files += Dir['vendor/v8/libv8.a']
+  gemspec.files += Dir['vendor/v8/v8.dll']
   FileUtils.mkdir_p 'pkg'
   FileUtils.mv(Gem::Builder.new(gemspec).build, 'pkg')
 end

ext/libv8/extconf.rb

@@ -1,14 +1,35 @@
-require 'mkmf'
-create_makefile('libv8')
-require File.expand_path '../arch.rb', __FILE__
-require File.expand_path '../make.rb', __FILE__
-require File.expand_path '../compiler.rb', __FILE__
+require File.expand_path '../../../lib/libv8', __FILE__
 
-include Libv8::Arch
-include Libv8::Make
-include Libv8::Compiler
+if Libv8.mingw?
+  File.open('Makefile', 'w'){|f| f.puts "all:\n\ninstall:\n" }
+else  
+  require 'mkmf'
+  create_makefile('libv8')
+  require File.expand_path '../arch.rb', __FILE__
+  require File.expand_path '../make.rb', __FILE__
+  require File.expand_path '../compiler.rb', __FILE__
+
+  include Libv8::Arch
+  include Libv8::Make
+  include Libv8::Compiler
+end
 
 Dir.chdir(File.expand_path '../../../vendor/v8', __FILE__) do
-  puts `env CXX=#{compiler} LINK=#{compiler} #{make} #{libv8_arch}.release GYPFLAGS="-Dhost_arch=#{libv8_arch}"`
+  if Libv8.mingw?
+    puts `scons os=win32 toolchain=gcc library=shared`
+  else
+    puts `env CXX=#{compiler} LINK=#{compiler} #{make} #{libv8_arch}.release GYPFLAGS="-Dhost_arch=#{libv8_arch}"`
+  end
+end
+
+if $?.exitstatus != 0
+  exit $?.exitstatus
+end
+
+begin
+  Libv8.libv8_objects
+rescue => e
+  puts e.message
+  exit 1
 end
 exit $?.exitstatus

lib/libv8.rb

@@ -4,12 +4,20 @@ module Libv8
 
   module_function
 
+  def mingw?
+    RUBY_PLATFORM =~ /mingw/
+  end
+
   def libv8_object(name)
     filename = "#{libv8_source_path}/out/#{Libv8::Arch.libv8_arch}.release/libv8_#{name}.#{$LIBEXT}"
     unless File.exists? filename
       filename = "#{libv8_source_path}/out/#{Libv8::Arch.libv8_arch}.release/obj.target/tools/gyp/libv8_#{name}.#{$LIBEXT}"
     end
-    return filename
+    unless File.exists? filename
+      # SCons build
+      filename = "#{libv8_source_path}/#{name}.#{$LIBEXT}"
+    end
+    filename
   end
 
   def libv8_base
@@ -25,7 +33,14 @@ def libv8_nosnapshot
   end
 
   def libv8_objects(*names)
-    names = [:base, :snapshot] if names.empty?
+    if names.empty?
+      names = if mingw?
+        # SCons build
+        [:libv8]
+      else
+        [:base, :snapshot]
+      end
+    end
     names.map do |name|
       fail "no libv8 object #{name}" unless File.exists?(object = libv8_object(name))
       object