[erlang-questions] Application can not be started

[Jay Doane]

I believe this line

{"init terminating in do_boot",{undef,[{dummy_proj,
start,[],[]},{init,start_it,1,[]},{init,start_em,1,[]}]}}

indicates that the function start/0 is not defined in module dummy_proj, so
if you want to start it like that on the command line, you could try adding
something like the following to dummy_proj.erl:
-export([start/1]).
start() ->
    application:ensure_all_started(dummy_proj).


On Tue, Oct 21, 2014 at 1:33 PM, 张国富 <cleancode@REDACTED> wrote:

> Hello all,
> I'm now following a Erlang rebar tutorial at
> http://www.metabrew.com/article/erlang-rebar-tutorial-generating-releases-upgrades,
> the test application can be started inside the erlang shell, like
> $ erl -pa apps/ebin/ -boot start_sasl
> 1> application:start(dummy_proj).
> =PROGRESS REPORT==== 21-Oct-2014::21:16:13 ===
>          application: dummy_proj
>           started_at: nonode@REDACTED
> ok
> 2> dummy_proj_server:poke().
> {ok,1}
> but it can not be started this way
> $ erl -pa apps/ebin/ -boot start_sasl -s dummy_proj
> Erlang R16B03 (erts-5.10.4) [source] [smp:4:4] [async-threads:10]
> [kernel-poll:false]
> .... <skip> .....
> =PROGRESS REPORT==== 21-Oct-2014::21:17:23 ===
>          application: sasl
>           started_at: nonode@REDACTED
> {"init terminating in
> do_boot",{undef,[{dummy_proj,start,[],[]},{init,start_it,1,[]},{init,start_em,1,[]}]}}
> Crash dump was written to: erl_crash.dump
> init terminating in do_boot ()
>
> It seems Erlang is trying to call dummy_proj:start(), but I can not
> understand why.
> Anybody who ever encountered the same problem here? How can I make it work?
>
> Thanks.
>
> Best wishes
>
> zhangguofu(Gary)
>
>
>
>
>
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>
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