%%-*- mode: erlang -*-

%% Set the minimum Mac target to 10.8 for 10.9 or greater.  This runtime
%% check is needed since rebar's system_architecture check looks only at
%% the version of the OS used to build the Erlang runtime, not the version
%% actually running.

Pwd = filename:dirname(SCRIPT).

File = filename:join([Pwd, "c_src", "rocksdb", "make_config.mk"]).

Opt = " $(cat " ++ File  ++ " | grep PLATFORM_LDFLAGS | awk -F= '{print $2}' | sed -e 's/-lsnappy//')".

Flags = ["DRV_LDFLAGS"].

{port_env, Vals} = lists:keyfind(port_env, 1, CONFIG).

Fold = fun({Flag,Val}, Acc) ->
               case lists:member(Flag, Flags) of
                   true ->
                       [{Flag, Val ++ Opt}|Acc];
                   false ->
                       [{Flag, Val} | Acc]
               end
       end.

NewVals = lists:foldl(Fold, [], Vals).

lists:keyreplace(port_env, 1, CONFIG, {port_env, NewVals}).