Paul Goyette <paul%whooppee.com@localhost> writes:
It gets as far as
...
js/src> creating ./config.data
js/src> Creating config.status
Creating config.status
Reticulating splines...
and then it just sits there with 5 python-27 processes each sucking up
100% of a CPU core/thread (I have MAKE_JOBS set to 8).
I waited more than 90 minutes with no apparent progress, and then just
killed the build.
FF53 started to use Python multiprocessing which relies on sem_open().
Maybe check if reverting has any effect.