Best way to keep large ports uptodate

[Tilman Linneweh]

* Rob Hancock [Sa, 14 Aug 2004 at 02:29 GMT]:
> Currently I've been using portupgrade to keep all my ports current, and
> it works great.  With very large ports such as KDE/base/libs/etc it takes
> several hours to compile on my little 600MHz laptop.  Is there a way to
> keep the previously compiled objects around so when I upgrade the
> next time only the changes have to be recompiled?  Or am I better off
> just waiting until major updates and doing a clean compile then?

Read /usr/local/etc/pkgtools.conf esp. HOLD_PKGS and USE_PKGS.

regards
tilman