Now I feel inadequate. I only had to deal with 8 or 10 versions.
Funny thing is, high cost compilers are suddenly becoming free such as Windows with their VS stuff. While gcc has been the gold standard, because it's been free, newer technologies such as LLVM are also beginning to thrive in the free and open source world. Amazing times we live in!
https://olimex.wordpress.com/2012/04/04/unix-on-pic32-meet-r...