BuildFlags.compilerFlags = ${BuildFlags.compilerFlags} -std=gnu++11 -stdlib=libc++
BuildFlags.linkerFlags = ${BuildFlags.linkerFlags} -stdlib=libc++

BuildFlags.compilerFlags.cxx = ${BuildFlags.compilerFlags.cxx} -std=gnu++11 -stdlib=libc++
BuildFlags.linkerFlags = ${BuildFlags.linkerFlags} -stdlib=libc++

Use BuildFlags.compilerFlags.cxx for C++ flags
Use BuildFlags.compilerFlags.cxx for C++ flags
