[GiNaC-list] small portability fix

[Richard B. Kreckel]

Dear Alexei,

Sheplyakov Alexei wrote:

>The attached patch removes non-portable code from ginsh and checks, so
>it possible to compile ginsh and run checks on MinGW.
>  
>
Thanks for submitting a patch. However, your patch trades the 
measurement of used system time for the measurement of elapsed 
(physical) time.  I don't think that's what we want.  If you really want 
to make it work on systems that don't have getrusage, then I suggest to 
encapsulate the time measurement into a little abstraction of its own 
and use #ifdefs within that.  Those #ifdefs could then check for 
something established by configure. (Sure there must be Autoconf macros 
out there checking for getrusage.)

Also, your patch repeats a little mistake in the original code, that 
I'was going to fix anyway in a few minutes.  :-)

Regards
  -richy.

-- 
Richard B. Kreckel
<http://www.ginac.de/~kreckel/>