There have been a growing number of platforms that Caffe needs to be built against. Various flavors and versions of Linux, OSX, Windows, CPU only version and even HPC clusters complicate the situation. To make the build system more cross-platform, modular and manageable in the long run, we had better take a less hacky way. One of the most suitable options is CMake which is adopted by many mature open source projects including OpenCV and Intel TBB. There are also a number of examples that use it to build CUDA related projects.