[erlang-bugs] R15B01 : lib:progname/0 of erlc is erl...

Bengt Kleberg <>
Thu Jun 7 09:04:08 CEST 2012


Greetings,

The lib module is marked deprecated. This makes me wonder if you are
willing to consider another less-than-production-quality solution?

In that case, have you considered looking at arguments to distinguish
erl vs erlc?
Ex: On my system init:get_arguments/0 return both {mode,["minimal"]} and
{boot,["start_clean"]} for erlc, but not erl.


bengt

On Tue, 2012-06-05 at 21:53 +0200, PAILLEAU Eric wrote:
> Hi,
> sorry to monopolize the list.
> 
> I'm using ~/.erlang file in order to automatize some applications start
> in developpement.
> 
> But my applications are starting when compiling with erlc .
> Well, erlc evaluates ~/.erlang at start like erl . OK...
> 
> I first used some plain arguments on erl start to detect erl or erlc but
> I forget often to add it in my command line. I wanted to do something
> smarter.
> 
> So I wrote in my ~/.erlang file :
> ------------------------------------
> case lib:progname() of
> 	'erlc' ->  ok ; % do nothing
> 	'erl'  ->  % start my favorite apps
> 		   ...
> end.
> ------------------------------------
> 
> Applications are starting anyway when compiling.
> 
> This can be seen by writing in ~/.erlang file :
> ------------------------------------
> io:fwrite("~p~n",[lib:progname()]).
> ------------------------------------
> 
> erlc -Wall -I include -o ebin/ src/xxxxx.erl
> erl
> 
> The progname of erlc is erl ...
> 
> --------- Erlang doc -----------------------------------------
> lib:progname() -> atom()
> 
> Returns the name of the script that started the current Erlang session.
> ---------------------------------------------------------------
> 
> erlc is a binary, erl is a shell script that launch erlexec which is a
> binary too.
> So what exactly the meaning of the documentation ? Is it a bug in erlc ?
> Even if erlc is a wrapper of erl, I suppose it should have erlc as
> program name ...
> 
> Regards.
> 
> 
> 
> 
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> 
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