Problem with Macports, homebrew, and ghostscript

[asllearner]

Bradley Giesbrecht-3 wrote
> You might want to rebuild your ports to ensure they did not link against
> /usr/local.
> 
> This probably works for this purpose:
> sudo mv /usr/local{,-moved-for-macports}
> port echo installed > port-installed.txt
> port echo requested and active > port-requested-active.txt
> sudo port -f uninstall installed
> cat port-requested-active.txt | xargs sudo port install

This is where I get confused. What does "link against usr/local" mean? What
is the effect vis-a-vis macports of the steps indicated? It seems to
uninstall the installed, and then reinstall the requested and active. What
would be the difference? How would this impact mapcports?





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