rebar3 compile doesn't run the makefile

[muszbek]

How did I encounter the issue?

I used erlport as a git dependency in the rebar.config of my erlang project.
Running my project throws an error when erlport tries to open python3.
Turns out python3 only works after the erlport project has been built with the makefile.

Temporary fix

For the moment I have to enter the directory of erlport (which is a dependency of my project) and manually run 'make'.
Alternatively I could script it in my root project to build the dependency, but this solution smells.

Suggestion

Building erlport can be automatized by rebar3, by adding a pre-compile hook in the rebar3.config.
This way all rebar3 projects that use erlport as a dependency will build it automatically after fetching it from git.