How to keep source

[Bart Masschelein]

Hi all,

I'm using mono from MacPorts, and at a point my program crashes,  
pointing to the following file

/opt/local/var/macports/build/ 
_opt_local_var_macports_sources_rsync 
.macports.org_release_ports_devel_mono/work/mono-2.0.1/mcs/class/ 
System/System.Net.Sockets/Socket.cs

This file is not there however. I assume it is put there termporarily,  
and removed after install. Which steps should I undertake (and  
especially which not) in order to keep those source files?

Thanks in advance,

Bart