rebar.config
{erl_opts, [debug_info]}.
{deps, []}.
{pre_hooks,
[{"(linux|darwin|solaris)", compile, "make -C c_src"},
{"(freebsd)", compile, "gmake -C c_src"}]}.
{post_hooks,
[{"(linux|darwin|solaris)", clean, "make -C c_src clean"},
{"(freebsd)", clean, "gmake -C c_src clean"}]}.
{plugins, [rebar3_hex]}.