dejagnu help: spawning with arguments, running ar

[Benjamin Kosnik]

>   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.

Thanks.

Ian answered this for me on IRC. What I was really looking for was
something like dg-options, but for execution, not compilation. 

Ie, something where I could add

// { dg-execute-options "1 100 2" }

to the test file in question. This doesn't exist, and Ian explained the
historical reasons for this. (Which led me to re-think using
command-line args for new tests.)

I'm trying to avoid special casing a bunch of new tests, or testsuite
directory naming hacks.

However, I've found another way around this, which doesn't involve
passing in argc/argv values.

Thanks for your help though, it's appreciated.

-benjamin