But in general, just add this to your ~/.profile (just create it if
you don't have it)
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
export MANPATH=/opt/local/man:$MANPATH
export LD_LIBRARY_PATH=/opt/local/lib:$LD_LIBRARY_PATH
(among other things if you also want to compile against headers there etc.)
- Horst