To compile Ardour with LLVM/clang, do the usual thing but set the CXX and CC
environment variables, e.g.:
CC=/usr/bin/clang CXX=/usr/bin/clang++ ./waf configure build
git-svn-id: svn://localhost/ardour2/branches/3.0@12418 d708f5d6-7413-0410-9779-e7cbd77b26cf