Making an extra executable

Hi Everybody,

Recently I built postgres 8.4.4 from source on centos 5.5 machine
and it is working. What I would like to do is to make an extra
installation in a different directory on the same machine. The
reason for this is that I want to build a machine image that I can
run on Amazon cloud. I have created a directory
/mnt/ami-centos5.5-64bit-base
which is the root for amazon (i.e., has usual directories
bin, boot, dev, etc, ..., usr, var) and I want to
build pgsql under this root. That is:
/mnt/ami-centos5.5-64bit-base/usr/local/pgsql

Can I do this with:
make install DESTDIR=/mnt/ami-centos5.5-64bit-base

I would appreciate it if you could tell me anything else
I have to do.

Thank you in advance.

Regards,

Tena Sakai
tsakai(at)gallo(dot)ucsf(dot)edu