CMake tweak
CMake tweak

[ ] May break build
[ ] May break existing applications (see CHANGES.txt)
[ ] Bugfix
[ ] New Feature
[x] Cleanup
[ ] Optimization
[ ] Documentation

ptoharia/CMake,shuaibarshad/KAUST-CMake,rballester/vmmlib,ptoharia/CMake,shurikasa/CMake,shuaibarshad/KAUST-CMake,hernando/vmmlib,shurikasa/CMake,rballester/vmmlib,tribal-tec/vmmlib,jafyvilla/CMake,ptoharia/CMake,hernando/vmmlib,shuaibarshad/KAUST-CMake,biddisco/CMake,biddisco/CMake,jafyvilla/CMake,rballester/vmmlib,biddisco/CMake,jafyvilla/CMake,BlueBrain/Tuvok,shurikasa/CMake,hernando/vmmlib,BlueBrain/Tuvok,BlueBrain/Tuvok,jafyvilla/CMake,biddisco/CMake,shuaibarshad/KAUST-CMake,shurikasa/CMake,ptoharia/CMake