Fixing broken macports after lib upgrade

Many package maintaing systems upgrade a lib and leave existing applications and libs with broken dependecy on lib that doesn't exist anymore.

Macports is not an exclusion. Recent upgrade of libpng12 to libpng14 result in many broken ports. When you try to install/upgrade/run some application you get:

    dyld: Library not loaded: /opt/local/lib/libpng12.0.dylib

This was the last drop. I'm tired of looking for ports I should rebuild, so I wrote a script to find broken ports.

Usage

It's a good headstart to fix broken ports. Here is what I did to fix my system:

    ./port-broken-libs /opt/local/lib/*.dylib

Above command lists ports which have broken dependcy. Then you can pipe it to port upgrade:

    ./port-broken-libs /opt/local/lib/*.dylib \
    | xargs sudo port -pnfuc upgrade --force

A little about port's command line options:

Don't stop upgrade if some port fails. This may happen for variouse reasons.

Required part. If you omit this option then upgrade of port X may try to upgrade port Y first and that may fail.

Tells to ignore previouse attempts to build a port.

It's up to you to decide if you want to clean things after and unistall replaced ports.

Tells to force rebuild even if there is no newer version available.

It took me a few rounds to rebuild most ports. Still a few ports were broken and packager couldn't fix them, but list was much smaller. I just uninstalled them with force applied and installed once again.

After fixing all files in /opt/local/lib dir. I fixed /opt/local/{bin,sbin} as well.

That's it. Enjoy.