when can i safely force a macports build when a dependency is indepently installed

[Bryan Blackburn]

On Thu, Jul 02, 2009 at 03:55:22PM -0400, Carter Schonwald said:
> thanks,
> might it be from a while ago having initially used fink / building stuff on
> my own / also having installed texlive 08 separately?

fink should install into /sw so unless you changed it, that won't be it; if
you don't give --prefix to configure scripts, when you build by hand it
should go into /usr/local.  I'm not sure about texlive 08 and where it goes
by default.  The only other thing I'm aware of that likes /opt/local would
be the package installers for KDE.

Bryan


> -Carter
> 
> On Thu, Jul 2, 2009 at 3:35 PM, Bryan Blackburn <blb at macports.org> wrote:
> 
> > On Thu, Jul 02, 2009 at 12:06:21PM -0400, Carter Schonwald said:
> > > hello all,
> > >
> > > I occasionally encounter errors of the following sort:
> > >
> > > sudo port install erlang
> > > --->  Activating fontconfig @2.6.0_2+macosx
> > > Error: Target org.macports.activate returned: Image error:
> > > /opt/local/etc/fonts/conf.avail/10-autohint.conf already exists and does
> > not
> > > belong to a registered port.  Unable to activate port fontconfig.
> > > Error: The following dependencies failed to build: tk Xft2 fontconfig
> > > xorg-libXScrnSaver xorg-scrnsaverproto
> > > Error: Status 1 encountered during processing.
> >
> > Encountering a "already exists and does not belong to a registered port"
> > should happen only extremely rarely, so if you are seeing it frequently you
> > need to track down what else may be depositing files into /opt/local that
> > isn't MacPorts.
> >
> > >
> > >
> > > when / how can I safely force macports to install over the dependency or
> > how
> > > can i determine if its safe to do so?
> >
> > You can force it with -f, read up at:
> >
> > <http://trac.macports.org/wiki/FAQ#whentoforce>
> >
> > Bryan
> >
> >
> > > thanks!
> > > -Carter