Additional check if libv8 objects were created

ext/libv8/extconf.rb

@@ -9,6 +9,17 @@
 include Libv8::Compiler
 
 Dir.chdir(File.expand_path '../../../vendor/v8', __FILE__) do
-  puts `env CXX=#{compiler.sub('\\','/')} LINK=#{compiler.sub('\\','/')} #{make.sub('\\','/')} #{libv8_arch}.release GYPFLAGS="-Dhost_arch=#{libv8_arch}"`
+  puts `env CXX=#{File.basename compiler} LINK=#{File.basename compiler} #{File.basename make} #{libv8_arch}.release GYPFLAGS="-Dhost_arch=#{libv8_arch}"`
+end
+
+if $?.exitstatus != 0
+  exit $?.exitstatus
+end
+
+begin
+  require File.expand_path '../../../lib/libv8', __FILE__
+  Libv8.libv8_objects
+rescue => e
+  puts e.message
+  exit 1
 end
-exit $?.exitstatus