[phenixbb] latest 64-bit command line build for Mac OSX 10.6.7?

[Nathaniel Echols]

On Mon, Apr 4, 2011 at 11:10 AM, Ben Eisenbraun
<bene at hkl.hms.harvard.edu> wrote:
> For the time being, we're just checking for 32-bit only CPUs and then
> forcing them to use an older version of CNS.  I tried building a 32-bit CNS
> and lipo'ing the 32 and 64-bit binaries into a two-way fat binary, but the
> default CNS optimizations seem to cause the 32-bit version to blow up.

Unfortunately, this would be much more difficult with PHENIX, since it
isn't a monolithic program like CNS.

> You should be able to use the hw.optional.x86_64 sysctl to tweak the
> phenix_env scripts to allow for a dual branch 32/64 bit installation in the
> same directory, but it seems like you're not yet recommending the 64-bit
> PHENIX on OS X Intel for general consumption.  You could also do something
> hackish like default to 32-bit but read $1 on the "source phenix_env"
> command line to enable the 64-bit version.

I think the sysctl command will at least let me distinguish between
CPU types, so that takes care of the 64-bit detection problem.  How to
allow 32-bit and 64-bit versions to coexist is a separate issue;
environment variables are another way, but neither of these options is
intuitive.  However, I think I figured out how to make them coexist in
the same base directory, but only for the command-line installation;
the graphical installers will still overlap.

One clarification: for people who only use the command line, the
64-bit build is recommended - we haven't noticed any problems with
program behavior so far and it will potentially save a lot of time and
trouble to have access to all available memory.  It's the GUI that's
the problem, but I'm going to see if I can tackle that this week.

-Nat