How to properly check for GCC 4.1 in port

[Ed Schouten]

Hello,

I'm the maintainer for the net/totd port. This port doesn't compile with
GCC 4.1. The easiest fix is to add -Wno-pointer-sign to the CFLAGS. GCC
3.4 doesn't allow this option. What's the nicest way to add a
conditional to the port Makefile to check for a GCC version?

Yours,
-- 
 Ed Schouten <ed at fxq.nl>
 WWW: http://g-rave.nl/
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