Attempting to build Coin-3.1.3

I'm trying to build/install Coin-3.1.3 so I can later install FreeCAD.

I have an RHEL 6 system that's up-to-date, but I keep getting the follwing error when attempting to configure Coin:

configure: error: C++ preprocessor "/lib/cpp" fails sanity check

I've been reading online that it means I don't have a c++ compiler installed, but the process of getting one from RHEL is a bit frustrating. There doesn't seem to be one, comnprehensive C++ package to install.

Can someone give me some guidance on this?

Thanks