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Fixed issue 213 - tell user to install proper erlang version if crypto module not present #240

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merged 1 commit into from May 26, 2011
Merged

Fixed issue 213 - tell user to install proper erlang version if crypto module not present #240

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18 changes: 18 additions & 0 deletions src/agner.erl
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Expand Up @@ -28,6 +28,7 @@ start() ->
[_|_] ->
ignore
end,
ensure_crypto_loaded(),
filelib:ensure_dir(os:getenv("AGNER_EXACT_PREFIX") ++ "/"),
inets:start(),
ssl:start(),
Expand Down Expand Up @@ -104,3 +105,20 @@ fetch(Name, Version, Directory) ->

versions(Name) ->
agner_server:versions(Name).


%%%===================================================================
%%% private
%%%===================================================================
ensure_crypto_loaded() ->
case code:load_file(crypto) of
{module, crypto} ->
ignore;
{error, _Err} ->
[io:format("~s~n", [Msg])
|| Msg <- ["Your local Erlang installation doesn't include the crypto module",
"Make sure you have erlang-crypto and erlang-dev if on Debian",
" have erlang-crypto and erlang-devel if on Redhat/Fedora",
" sudo port install erlang +ssl if on OS X",
"Or, let kerl (https://github.com/evax/kerl) take care of those for you"]]
end.