Linking with -R (rpath) not supported on Darwin

Hello,
I've just compiled HEAD (1.5.3.4.209.g9e417) and saw a:
     LINK git-http-fetch
i686-apple-darwin8-gcc-4.0.1: unrecognized option '-R/opt/local/lib'

It didn't harm but the build process should be more careful to not  
use options that are not supported by the compiler.  And it's not a  
matter of using -Wl,-rpath instead.

Cheers,

-- 
Benoit Sigoure aka Tsuna
EPITA Research and Development Laboratory