Have you called build_files/build_environment/install_deps.sh previously to build BFA? This script would install OSL and OSD and contains rpm install routines.
CUDA_TOOLKIT_ROOT_DIR not found or specified
Doesn’t indicate anything, on my arch and deb systems that’s also always undefined while the library-paths are correct. But would be interesting if there is Cuda included 
I’m btw currently in the process o f making Arch AUR packages and *.deb packages for Debian based systems, but a *.rpm package would of course be very nice.