How to build cef3 from source?

I need the debug info of libcef.dll (the .pdb file). So I’m trying to build the cef3 from the engine source code. How to do that in the vs project of the engine?

BTW, the problem I’m facing right now is that UnrealCEFSubprocess crashes when the game runs for a while. Our UI system is based on the cef3 web browser. So the UI crashes with it. I try to attach the debugger to this process to observe what happens when it crash.

Is their any better way to do this kind of debug?