Configure for non-gcc compiler

[A.P. Horst]

Hi,

been trying my way in autotools land for a short while now, and I must 
say, it works like a charm.
But there is one thing I've been breaking my head on for a while now. 
Many of my projects use GCC, some use a totally different compiler and 
worse, some are mixed. How do I go about that with autoconf? Is there an 
easy way to 'add' a compiler to check for? Or a hard way?
If somebody could give me some handles to work with, I would be very 
thankful. My searches on the internet have turned up squat, bit might be 
I didn't use the magic combo of keywords.

Arie