These files are not lost, they are never built on architectures that do not support compilation of ocaml to native code. This seems to be a bug in the upstream Makefile: OBJECTCMXA=$(OBJECTCMA:.cma=.cmxa) install-library: [...] cp $(OBJECTCMA) $(OBJECTCMXA) $(FULLCOQLIB) This should accomodate for the fact that there may be no .cmxa files. -Ralf. --