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%% -*- mode: erlang;erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ft=erlang ts=4 sw=4 et

UpdateDeps = fun(Config, NewDeps) ->
                     case lists:keyfind(deps, 1, Config) of
                         {deps, Deps} ->
                             NDeps = Deps ++ NewDeps,
                             lists:keyreplace(deps, 1, Config, {deps, NDeps});
                         false ->
                             Config ++ [{deps, NewDeps}]
                     end
             end,

Dir = filename:dirname(SCRIPT),

ErtsVsn = case string:tokens(erlang:system_info(version), ".") of
              [A,B] ->
                  {list_to_integer(A), list_to_integer(B), 0};
              [A,B,C|_] ->
                  {list_to_integer(A), list_to_integer(B), list_to_integer(C)}
          end.

%% generate a charset include file
ok = file:write_file(filename:join(Dir, "src/yaws_charset.hrl"),
                     case os:getenv("YAWS_CHARSET") of
                         false ->
                             <<"-define(YAWS_CHARSET, undefined).\n">>;
                         Charset ->
                             [<<"-define(YAWS_CHARSET, \"">>,
                               Charset, <<"\").\n">>]
                     end),

SoapDeps = [{erlsom, ".*", {git, "git://github.com/willemdj/erlsom.git", {branch, "master"}}},
            {xmlrpc, ".*", {git, "git://github.com/rwbr/exmlrpc.git", {branch, "master"}}}],
Cfg0 = case os:getenv("YAWS_SOAP") of
           false ->
               CONFIG;
           _ ->
               UpdateDeps(CONFIG, SoapDeps)
       end,

ErlOpts = case lists:keyfind(erl_opts, 1, Cfg0) of
              {erl_opts, EOpts} -> EOpts;
              false             -> []
          end,
PortEnv0 = case lists:keyfind(port_env, 1, Cfg0) of
               {port_env, PEnv} -> PEnv;
               false            -> []
           end,
DisablePam = os:getenv("YAWS_DISABLE_PAM"),
PortSpecs = case lists:keyfind(port_specs, 1, Cfg0) of
                {port_specs, PSpecs} ->
                    case DisablePam of
                        false ->
                            PSpecs;
                        _ ->
                            lists:keydelete("priv/lib/epam.so", 1, PSpecs)
                    end;
                false -> []
            end,

OS = os:type(),

DefaultUsrIncludeSecurity = "/usr/include/security",
UsrIncludeSecurity =
    case DisablePam of
        false ->
            case OS of
                {unix, darwin} ->
                    case filelib:is_dir(DefaultUsrIncludeSecurity) of
                        true ->
                            DefaultUsrIncludeSecurity;
                        false ->
                            Result =
                                fun R(Port, Acc) ->
                                        receive
                                            {Port, {data, L}} ->
                                                R(Port, [L|Acc]);
                                            {Port, {exit_status, 0}} ->
                                                {ok, lists:flatten(lists:reverse(Acc))};
                                            {Port, {exit_status, Fail}} ->
                                                {error, {Fail,
                                                         lists:flatten(lists:reverse(Acc))}}
                                        end
                                end,
                            Run =
                                fun(Cmd) ->
                                        Port = open_port({spawn, Cmd},
                                                         [exit_status, stderr_to_stdout]),
                                        Result(Port, [])
                                end,
                            {ok, PlatDir} = Run("/usr/bin/xcrun --show-sdk-path"),
                            SdkDir = string:strip(PlatDir, right, $\n),
                            SdkDir ++ DefaultUsrIncludeSecurity
                    end;
                _ ->
                    DefaultUsrIncludeSecurity
            end;
        _ -> ""
    end,
PortEnv1 = case UsrIncludeSecurity of
               "" -> PortEnv0;
               _ -> PortEnv0 ++ [{"CFLAGS", "$CFLAGS -I" ++ UsrIncludeSecurity}]
           end,

Cfg1 = lists:keyreplace(erl_opts,   1, Cfg0, {erl_opts,   ErlOpts}),
Cfg2 = lists:keyreplace(port_env,   1, Cfg1, {port_env,   PortEnv1}),
Cfg3 = lists:keyreplace(port_specs, 1, Cfg2, {port_specs, PortSpecs}),

Cfg3.