[CMake] how to add 2 numbers with cmake ?

[Gaetan Lehmann]

Hi,

I'm sure it's obvious for everybody here, but I can't find how to add 2  
numbers with cmake.
Can someone show me how to do that ?

Thanks,

Gaetan

-- 
Gaëtan Lehmann
Biologie du Développement et de la Reproduction
INRA de Jouy-en-Josas (France)
tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
http://voxel.jouy.inra.fr