change gcc version ?

[Chris Jones]

Hi,

I'm trying to compile some KDE4 packages from macports and am running  
into a problem with kdelibs4. After some googling I found various  
places which mention the error I am getting, and all suggest using gcc  
4.2 instead of 4.0

So, I want to try this, but cannot figure out how I am suppose to tell  
macports to use the newer gcc version (I have the latest Xcode  
instead, so have both versions available).

Can someone point me to some instructions on how to change the gcc  
version that is used ?

cheers Chris