I know I am not really answering your question, but I have to ask...
WHAT ARE YOU THINKING!!!!?
Eclipse + CDT is freaking awful, one of the worst IDE combinations I have ever used. I am not a huge Eclipse fan to start with and only really use it when forced ( Google tools, such as App Engine and Android all force Eclipse on you ) and for Java it is "OK", but for C++ it is freaking terrible.
I mean, even if you hate Microsoft or arent on Windows, you still have a ton of superior options.
Code Blocks
Qt Creator ( very very good, btw )
NetBeans ( pre 7.1, 7.1 blows )
To name 3 freely available cross platform alternatives.