Dolphin-emu build problems

I'm trying to build it, but I'm having problems because I have cg installed at a non-default dir.

How can I edit CMakeLists.txt to instead of doing:

check_lib(CG Cg Cg/cg.h)

check_lib(CGGL CgGL Cg/cgGL.h) do something like this:

add_include_dirs(/usr/local/nvidia-cg/include)

add_library_dirs(/usr/local/nvidia-cg/lib64)

I would also like to know if it's possible to have dolphin-emu to use a secondary GPU for computation instead of the main one. Why? Because I have 2 GPUs installed on my desktop and the one assigned to X is the least powerful one.

Thanks

EDIT: I'm using Debian so using the Ubuntu builds is not much of an option. And in any case, solving this would make me understand more about cryptic cmake.

EDIT2: I solved this problem with env variables CMAKE_INCLUDE_PATH and CMAKE_LIBRARY_PATH

I'm now having another problem.

The link step fails:

Linking CXX executable ../../../Binaries/dolphin-emu

/usr/bin/ld: cannot find -lCg collect2: ld returned 1 exit status make[2]: * [Binaries/dolphin-emu] Error 1 make[1]: * [Source/Core/DolphinWX/CMakeFiles/dolphin-emu.dir/all] Error 2 make: *** [all] Error 2 If I do it with make VERBOSE=1 I can see that cmake is not passing the appropriate -L path in the link command. How can I do this?

Is there a reason you want to build it rather than install it from a ppa?