[CMake] MPI Module

[Robert Kubrick]

On Sep 8, 2008, at 5:50 PM, Alexander Neundorf wrote:

> On Monday 08 September 2008, Robert Kubrick wrote:
>> I see. So you mean removing the cache files everytime I change the
>> CXX variable?
>> That works as far as I only use mpicxx, but if I want to run a
>> profiled version of my program I should be able to set a variable to
>> switch to mpicxx -mpe=mpianim without regenerating the Makefiles.
>
> This is not possible. One build tree is fixed to one compiler  
> (otherwise e.g.
> all the try-compile tests can be wrong).

I see. Even 'make -e' is disabled somehow by cmake, so there is no  
chance to change compilation options at runtime.

> If you need different compilers, I'd suggest to create separate  
> build trees
> for each one of them.

Actually different compiler options, but I guess it's the same idea?

>
> Alex