compiling 64 bit libraries

[Brian Gough]

At Mon, 10 May 2010 10:39:48 -0400,
Gideon Simpson wrote:
> 
> I currently have a perfectly good 32bit GSL library, but I'd like to
> have a 64 bit version so that I will more easily be able to link
> against it using MATLAB's MEX.  I'm not entirely sure how to go
> about doing this.  I have an OS X 10.6 machine with a native install
> of GCC 4.4.2.  Which flags do I want to use?  How do I then ensure
> it's installed in /usr/local/lib/x86_64?
> 

I think 64 bit libraries have been discussed on the help-gsl@gnu.org list in the past.
If you don't get an answer here I suggest looking there.
http://lists.gnu.org/mailman/listinfo/help-gsl

-- 
Brian Gough