Description of problem: So I lost rpm building functionality. rpm -b fails with a really unclear usage message, instead of somehow saying that components are missing. How reproducible: Didn't try Additional info: An strace lead to /usr/lib/rpm/rpmb which i didn't have. an rpm -qf of that file on a freshly installed 7.1 located my missing package.
Yes, the build modes of rpm have been broken off a different executable. You need to install the rpm-build package.