https://bugzilla.redhat.com/show_bug.cgi?id=1887091
--- Comment #9 from Andy Mender andymenderunix@gmail.com ---
Reading that article I couldn't figure out how to deal with that. It's clearly building its own .la file.
Unless the libtool file is needed by the package explicitly, it should be removed after it's created. Many C/C++ programs generate .la files during compilation and these are removed manually in the SPEC file by running "rm".