From owner-freebsd-ports@FreeBSD.ORG  Wed Jul 30 23:12:01 2008
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Date: Thu, 31 Jul 2008 00:11:56 +0100
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Subject: Re: Problems with portupgrade && xscreensaver-gnome
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On Wed, 30 Jul 2008 18:33:07 -0400
Bill Moran <wmoran@potentialtech.com> wrote:

> 2) Why is portupgrade dying on a warning message?  Why does a poor
>    decision on one port prevent everything on my system from
> upgrading? 3) The error from portupgrade does not immediately point
> me to the easy solution, it tricks me into thinking I have to hack
> the Makefile.

All port build tools make use of "make -V" to read vaiables. With this
warning in place, you get something like this: 

  #  make -V CONFLICTS
  "Makefile", line 106: warning: Option KEYRING needs PAM, but PAM is
  disabled. xscreensaver-[0-9]* xscreensaver-gnome-hacks-[0-9]*

which no tool is going to be able to parse. If you just do a "make
install", there wont be a problem, so it's understandable that it
wasn't spotted.