llvmbuild.txt and cmakelists.txt

I’ve been experimenting with building various llvm variants on mac OS X.

Ususally, it’s a case of cloning, running cmake with Xcode as generator and loading the resulting xcodeproj.

In trying to build the skeleton openrisc backend from https://github.com/asl/llvm-openrisc
as described in “building a backend in 24 hours” at http://llvm.org/devmtg/2012-04-12/Slides/Workshops/Anton_Korobeynikov.pdf, I find there are no cmakelists but there are llvmbuild.txt’s. Is the llvmbuild somehow used to generate the cmakelists?

The presentation and repository are several years old, has the build system changed that much?