support compiling C++ objects with Object builder

build_tests/simple_cc/build.rb

@@ -0,0 +1,4 @@
+Rscons::Environment.new do |env|
+  # CHANGE FLAGS
+  env.Program('simple', Dir['*.cc'])
+end

build_tests/simple_cc/simple.cc

@@ -0,0 +1,8 @@
+#include <iostream>
+
+using namespace std;
+
+int main(int argc, char *argv[])
+{
+    cout << "This is a simple C++ program" << endl;
+}