[99s-extend] Getting started error: behaviour cowboy_http_handler undefined

[lloyd at writersglen.com]

Hi Loïc,

Thanks for help.

I'm running cowboy master from GitHub and Erlang R16B02.

$ echo $ERL_LIBS

...gives me a directory that no longer exists; don't know how it got there, what it should be, or how to change it.

E.g.: /home/lloyd/Programming/Erlang/zippity/apps

I've looked in .erlang and tried $ export ERL_LIBS=<my path to hello_erlang/ebin>.

Thanks again,

LRP

-----Original Message-----
From: "Loïc Hoguin" <essen at ninenines.eu>
Sent: Monday, March 10, 2014 4:36pm
To: lloyd at writersglen.com, extend at lists.ninenines.eu
Subject: Re: [99s-extend] Getting started error: behaviour cowboy_http_handler undefined

Try updating Erlang or Cowboy, this isn't the first time this happens 
and I fixed something at some point.

Also see if you have ERL_LIBS already defined, in which case there might 
be a bug in Cowboy.

On 03/10/2014 08:44 PM, lloyd at writersglen.com wrote:
> Hello,
>
> I've slavishly emulated the "Getting started" example in the guide:
>
> http://ninenines.eu/docs/en/cowboy/HEAD/guide/getting_started/
>
> But, when I compile I get this error:
>
> yada yada
>   ERLC   hello_erlang_app.erl hello_handler.erl hello_erlang_sup.erl
> compile: warnings being treated as errors
> src/hello_handler.erl:2: behaviour cowboy_http_handler undefined
> make: *** [ebin/hello_erlang.app] Error 1
>
> Cowboy seems to be correctly loaded and compiled as a dependency. I can see .../cowboy/ebin/cowboy_http_handler.beam
>
> However, when I remove the line -behavior(cowboy_http_handler) from hello_handler.erl, system compiles and creates release just fine.
>
> % -behavior(cowboy_http_handler).
>
> Could this be a bug in Getting started or some dunder-headed thing on my end?
>
> Thanks,
>
> LRP
>
>
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