demo-clasp-cxx build status

Hello, I have Clasp built and running on 10.9.4 using XCode 6. Before going into detail, I wanted to briefly inquire if at present demo-clasp-cxx is expected to build, if so with what branch of Clasp? It used to be the preview branch but I noticed that elements of preview, most notably SICL et al are now in master. Please advice Best Regards Chris Kohlhepp