How to disable all inspections for a project?

I have just started using CLion for my project. This project already exists for a while on Makefile. I started using CLion with a very simplistic CMake file. My goal is not to build in CLion (at least not initially), I just want to use it for editor and to browse around code. CLion is good enough for both those tasks for now. But, it shows lots inspections errors and warnings. Either it could be due to my bad CMake file or bugs in CLion. Either way, I just want to disable inspections for now (all of them errors and warnings).

In preferences under C/C++ and General sections I have disabled all inspections, I still see lot of red errors. Whats going on? How do I disable all inspections?

Note: I am using 2017.2 against OSX.

Thanks