Added appveyor.yml config to do CI for windows.

Let make output directly to stdout instead of capturing.

Author: jarredholman

appveyor.yml

@@ -0,0 +1,37 @@
+version: 3.16.14.8.b{build}
+
+# Operating system (build VM template)
+os: Windows Server 2012
+
+clone_depth: 10
+
+environment:
+  matrix:
+    - ruby_version: "22-x64"
+    - ruby_version: "22"
+    - ruby_version: "21-x64"
+    - ruby_version: "21"
+    - ruby_version: "200-x64"
+    - ruby_version: "200"
+    - ruby_version: "193"
+
+# scripts that run after cloning repository
+install:
+  - set PATH=C:\Ruby%ruby_version%\bin;%PATH%
+  - C:\Ruby%ruby_version%\DevKit\devkitvars.bat
+  - git submodule update --init
+  - ruby --version
+  - gem --version
+  - gem install bundler --no-ri --no-rdoc
+  - bundle --version
+  - bundle install --jobs=1 --retry=3
+
+build_script:
+  - bundle exec rake binary
+
+test_script:
+  - bundle exec rake spec
+  
+artifacts:
+  - path: pkg\*.gem
+

ext/libv8/builder.rb

@@ -61,8 +61,8 @@ def build_libv8!
         when /mingw/
           # use a script that will fix the paths in the generated Makefiles
           # don't use make_flags otherwise it will trigger a rebuild of the Makefiles
-          `env CXX=#{@compiler} LINK=#{@compiler} bash #{PATCH_DIRECTORY}/mingw-generate-makefiles.sh`
-          puts `env CXX=#{@compiler} LINK=#{@compiler} make #{make_target}`
+          system "env CXX=#{@compiler} LINK=#{@compiler} bash #{PATCH_DIRECTORY}/mingw-generate-makefiles.sh"
+          system "env CXX=#{@compiler} LINK=#{@compiler} make #{make_target}"
 
         else
           puts `env CXX=#{@compiler} LINK=#{@compiler} #{make} #{make_flags}`