Compilation failed

Hi, Im not too familiar with this project, so any help is appreciated.
My compilation fails, and leaves little to debug, when trying to process this patch

I do have jsoncpp and dwmipcpp installed, but I doubt you are going to be able to debug the issue by just the emerge log itself, so please tell me what to send over. 

The build log looks like this: https://dpaste.com/C6ADGZDKD