It make be a small thing, but barriers to entry are .. barriers to entry.
Erlang has a make-life file built into the system. If you see something like 'Emakefile', you might be tempted to google 'emake'.
Instead, run 'erl -make'.
And this is my point : that should be made much more obvious. Simply saying in the README for an app that uses this, 'build with erl -make' would remove all the mystery.