I have a Sunfire Galaxy (x2200 M2) server running two dual core Opteron
processors.

Being a server, I have installed the SUNWreq metacluster and only
necessary packages and I'm heavily utilizing Zones.

I have a couple packages that I am needing to compile for the platform,
but I do not have another Opteron system system to do the compiles on.

I have a P4 3.06GHz Windows box here that I run Vmware on for all of my
testing, etc... I have a Solaris 10 x86 installation on the box with
all the GCC tools that come with Solaris. Are there any issues, or
special flags I should give when building/compiling code on the 32bit
Vmware system to work efficiently/correctly on the 64bit Opteron
platform?

I don't think it really makes a difference for things like DSPAM or
other utils like that, but I am concerned for items maybe like NTOP
which is a little more intrusive than a normal application.

Just looking for any issues or special "configure" flags.

Thanks!