Each had the original source imported, then updated with the latest patches from my site. In the next few days I should have the toolchain.sh script updated to grab a diff from cvs and apply it to source which will be downloaded from gnu/whoever.
To be honest, the last time I used Sony's SDK compiler was almost 4 years ago. I think it was 2.7.x or some old version. I really can't answer this question. :)
I can't imagine having to change any code though, assuming Sony uses 3.x nowadays...
