How-to: Install MCNP4C2 on Mac OS X 10.4.10 (Intel)

MCNP (Monte Carlo N-Particle) is a transport code that is used throughout the physics community to model how particles interact as they travel through a system. The code is quite old, and therefore requires tweaking to get it running on newer systems like Mac OS X 10.4.10. There are programs and compilers it needs to use when installing that aren’t included in Mac OS X anymore due to their age, and a few that are on the Mac OS X CD that came with your computer, but aren’t installed by default. The first things we need are:

A FORTRAN-77 compiler and a ‘C’ compiler of the same version.
The ‘fsplit’ program.
X11 installed.
The XCode tools.

How-to series

The next few posts I think will be a little more obscure than the others.  As a scientist, I frequently have to work out how to install random science-y programs on my computer, and how to do the odd geeky thing.

 Occasionally I get asked how to do these things, and the things I need to do are frequently undocumented, or badly documented at best.  I hope someof you find these things useful.  If not, at least they’ll exist for when someone asks me how.