When attempting "make -jN install" of elfutils it dies mysteriously due to a missing .map file. Not sure what/where to do here. Guess elfutils should also have the workaround?
Actually, it is "make -jN all" what dies mysteriously. (The bug hits again in "make -jN install" because of bug #2794.) I reported these two bugs here http://comments.gmane.org/gmane.comp.gnu.make.general/5123 I hope to do some more analysis and then send a report to bug-make. (aka http://dir.gmane.org/gmane.comp.gnu.make.bugs)
We forgot to mention here that if the *.map files are mentioned (and thus no longer intermediate), the bug disappears.
Parallel builds work fine upstream now.