Hi, Does anyone have experience building SciPy on 64 bit linux boxes? Our machine is a dual Opteron, running something like RedHat Enterprise 4.2: xxi1 : 74>uname -a Linux xxi1.nrl.navy.mil 2.6.9-11.ELsmp #1 SMP Thu Jun 16 11:18:13 CDT 2005 x86_64 x86_64 x86_64 GNU/Linux We've been running into problems with numpy/scipy looking for libraries in /usr/lib when it should be using /usr/lib64, so that a simple install with setup.py install doesn't work. It crashes when you run and it loads those 32 bit libraries. I think all I need to do is ensure that the library search paths include /usr/lib64 and / usr/X11R6/lib64 and NOT /usr/lib or /usr/X11R6/lib. What is the easy or "right" way to do this? Is there an option to setup.py? Should I make a site.cfg (and where should it reside?)? Should I edit system_info.py? I assume that this configuration is becoming more common as 64-bit processors show up in more machines, so I'm surprised that setup.py doesn't already figure it out and "do the right thing". Are we doing something boneheaded? Thanks, -- Paul