R on gentoo amd64 (gcc 3.3.3) is unstable --- no!

from the gentoo folks, on f2c problems with R on 64bit platforms:

"Config and me finally found the reason. When R calls fortran functions 
 from its c sources, it uses strictly ints for intgeres, not long ints. 
But f2c is perfectly right to use long ints on 64bit arches."

---
ivo welch