RE: dejagnu help: spawning with arguments, running ar

["Dave Korn" <dave dot korn at artimi dot com>]

On 09 June 2006 17:52, Benjamin Kosnik wrote:

>>   Ok, how's that meant to work?!?  I don't see anything that suggests you
>> can just invoke arbitrary executables from an expect script; it's not a
>> shell script.
> 
> Yes.... I said "naive." I was hoping to lure dejagnu hackers out of the
> woodwork with it.
> 

  :)  IHBT!

>> eventually see that you need to build up your command line and wrap it in
>> a construct like 
>> 
>> 	set result [catch "eval spawn \{${commandline}\}" pid];
> 
> This was helpful, thanks.
> 
>>   Isn't "Just append them to the commandline that gets spawned" the answer
>> you're looking for?
> 
> Any chance I could get a pointer from you (like above), or even better
> a simple example?

  Well, in your example from your earlier post, you would have wanted
something like

  set commandline "./pair.exe"
  if { some condition }
  {
    set commandline "$commandline 1 1000 2"
  }
  set result [catch "eval spawn \{${commandline}\}" pid];

..is that what you mean?  The commandline to spawn is basically a shell
command line, you can use redirection and so on, although there are problems
with full pipelines.  Take a look at local_exec in
${prefix}/share/dejagnu/remote.exp and particularly the warnings and caveats
in the comments at the start.


    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....