[ncl-install] Fortran for 64 bit IMac?

Mary Haley haley at ucar.edu
Mon Jun 27 07:52:48 MDT 2011


Hi Joe,

All of the NCL developers are using 64-bit Macs, so this shouldn't be a problem.

If you download the NCL binary for MacOS 10.6, this will be a 64-bit binary.

As Bryan mentioned, you should be able to use macports to get gfortran. I believe the compiler that gets installed is 64-bit by default, but you can force it to compile in 32-bit mode (if you need to) by using the -m32 option. I don't recommend this, however. It's better to try to stay in native 64-bit mode as much as possible.

--Mary

On Jun 26, 2011, at 1:18 PM, Joseph Cain wrote:

> I have seen but previously ignored discussions of fortran on this forum, but since I only have Fortran available on external systems like those at GFDI, and NCL only available on my IMac decided that I should bit the bullet and get a Fortran for the IMac.
> 
> Web discussions indicate this is not all roses, and some have had to utilize commands to downgrade their object files to 32 bit since  not all Fortran knows about 64 bit.
> 
> Are some of the readers of this forum 64 bit Mac users who might advise on what is easy to install and works well?
> 
> 
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