rebar.config

{pre_hooks, [{"(linux|darwin)", compile, "make compile_nif"}]}.
{post_hooks, [{"(linux|darwin)", clean, "make clean_nif"}]}.

{artifacts, ["priv/eunicode2gsm_nif.so"]}.

{project_plugins, [rebar3_hex]}.

{deps, []}.

{erl_opts, [
    warnings_as_errors,
    warn_export_all
]}.

{profiles, [
    {test, [
        {erl_opts, [debug_info, nowarn_export_all]}
    ]}
]}.