Change prefix path

[Kraus Philipp]

Hello,

I'm new with macports, but not new with OSX and Unox (Gentoo). I've  
installed macports under Leo and Snow Leopard. I would like to install  
the kcachegrind for visualize some valgrind logs. I have seen that I  
can configure the --prefix parameter under /opt/local/etc/macports/ 
macports.conf

Can I setup the path eg /opt/mymacports/ ? So that all tools, that are  
installed by port under this directory? The library path I would set  
with the environmantal variables. I would like to seperate the port  
binaries and all other system components.

Thx

Phil