[NTLUG:Discuss] AMD64 compile howto?

[Jack Snodgrass]

I've just built a system with a 3200+ AMD 64 CPU and entered into the
new 64-bit 
world.... I've installed the amd64 bit version of Fedora FC3.  ( I run
FC3 on several 
P4 systems ) 

I generally compile / install things like apache, mysql, php, cyrus*,
etc from source. 
I do something like a  ./configure and then a make && make install. 

How will this change with the AMD64 stuff? Will I do the same thing that
I do 
today and ./configure and make and what-not will just 'know' to build
64-bit 
binaries or do I have to do something else? What if I want to ( for
whatever 
reason ) make a .i386 or .i686 binary... something I compile on machine
a ( 64-bit ) 
but want to run on a 32-bit P4.... 

If I use source RPM files ( which I generally don't do )... but if I
did, what 
would I do to generate i386/i686/amd64 type .rpm files? 

-- 
Jack Snodgrass <jack at jacksnodgrass.com>