CGM Frequently Asked Questions

Frequently asked questions about CGM. Feel free to add new ones if you like, but please follow the formatting conventions I use below. Or, send me your questions (and answers, if you're nice) and I'll add them.

How do I build CGM from scratch?
I get warnings about "Attribute type -1 not recognized"
Linking warning about "tmpnam"
Linking warning about libstdc++