rebar.config.script

%% -*- erlang -*-
%%
%% If the environment variable X_COMP is set, it is an indication that self
%% is being compiled as a dependency under exodev. Since exodev lists all
%% dependency in its root rebar.config file in order to have a flat view of
%% the dependency tree, we should nil out our local
%% deps list provided by our local rebar.config
%%
CFG1 = case os:getenv("KVDB_BACKENDS") of
	   Str when is_list(Str) ->
	       Priv = filename:join(filename:dirname(SCRIPT), "priv"),
	       {ok,Exclude} = file:script(
			       filename:join(Priv, "excluded_apps.script"),
					 [{'CWD', Priv}]),
	       Deps0 = proplists:get_value(deps, CONFIG, []),
	       Deps1 = [D || D <- Deps0,
			     not lists:member(element(1,D), Exclude)],
	       lists:keystore(deps, 1, CONFIG, {deps, Deps1});
	   false ->
	       io:fwrite("Using all backends~n", []),
	       CONFIG
       end.

%% The following is a temporary fix for Feuerlabs' device SW build system
case os:getenv("EXODEV_COMP") of
    E when E==false; E==[] ->
	case os:getenv("REBAR_DEPS") of
	    D when D==false; D==[] -> CFG1;
	    Dir -> lists:keystore(deps_dir, 1, CFG1, {deps_dir, Dir})
	end;
    _ ->
        case lists:keytake(deps, 1, CFG1) of
            { value, _, Remainder } -> Remainder;
            _ -> CFG1
        end
end.