rebar.config

{erl_opts, [fail_on_warning, debug_info]}.

{port_envs, [
    % this is local mod: "gcc" or "cc" works on FreeBSD
    % {"CC", "gcc44"}, 
    % this CFLAGS file is for SFMT performance increase
    {"CFLAGS", "$CFLAGS -O3 -finline-functions -fomit-frame-pointer -fno-strict-aliasing --param max-inline-insns-single=1800 --param inline-unit-growth=500 --param large-function-growth=900 -Wmissing-prototypes -Wall -std=c99"}
]}.

{so_specs, [
    {"priv/sfmt_nif.so", ["c_src/sfmt_nif.o"]}
]}.