[Rivet] Problem with gsl-config and 32/64-bit hybrid systems

[Holger Schulz]

Hi,

I noticed that the configure script now uses 'gsl-config' to
find the appropriate GSL and CBLAS libraries. However,
on the NAF system there are 32 and 64-bit versions of these
libraries. I want to use the 64-bit ones, but gsl-config always
points to the 32-bit version. Also, it is not possible to
overwrite the choices made by gsl-config by using the
--with-gsl switch.

Do you think that gsl-config is simply not working properly
in such a case? What do I have to do to properly override
it's choices?

Cheers,
Holger