eUtils/c_src/neural/rebar.config

{port_specs, [
    {"../../priv/neural.so", ["*.cpp"]}
]}.

{port_env, [
    {".*", "CXXFLAGS", "$CXXFLAGS -std=c++11 -O3"},
    {".*", "LDFLAGS", "$LDFLAGS -lstdc++ -shared"}
]}.