[erlang-questions] Can I build Erlang with make -j?

Gerhard Lazu gerhard@REDACTED
Wed Jan 30 13:34:05 CET 2019

Yes, the -j flag is guaranteed to work as expected when building Erlang
from source. If still in doubt, can you think of a series of checks that
you could run post-build to ensure that the resulting artefact behaves

We are using -j when compiling Erlang in the RabbitMQ Docker image:

As for checks, we verify that Erlang/OTP crypto & ssl were compiled against
OpenSSL correctly:

The same -j flag is used in the Erlang Docker image:

Hope this helps, Gerhard.

On Wed, Jan 30, 2019 at 11:19 AM Roger Lipscombe <roger@REDACTED>

> I'm building Erlang/OTP (using kerl, but I don't think that's
> relevant) and it's taking forever. Can I use MAKEFLAGS=-j8 to make it
> quicker? Is this supported?
> I mean, sure, it *appears* to be working (though something's using
> more than 8 cores, somehow, and my music playback's getting choppy).
> But is it *guaranteed* to work?
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