Upgrading from =media-libs/jpeg-6b to =media-libs/jpeg-7.

[ssuominen]

When you upgrade from media-libs/jpeg-6b to media-libs/jpeg-7 you will notice that libjpeg.so.62 isn't present anymore and libjpeg.so.7 is installed instead. A lot of programs will break temporarily, including environments like Gnome or KDE.

So what should you do?

If you have jpeg-compat OR old libjpeg.so.62 installed, remove it.

# emerge -C media-libs/jpeg-compat
# rm -f /usr/lib/libjpeg.so.62*

Fix your system with Portage 2.2*.

# emerge @preserved-rebuild

Fix your system with Portage 2.1*.

# emerge gentoolkit
# revdep-rebuild

Do above until every package except _binary only_ ones are recompiled to use libjpeg.so.7 instead of libjpeg.so.62.

Now, you can install media-libs/jpeg-compat for _binary only_ packages like e.g. games-strategy/savage2-bin.

I'd like to emphatize the fact that media-libs/jpeg-compat isn't meant to be used for fixing source based packages, and it will cause you
problems later on.

Stuck, --kallamej
Unstuck, --Earthwings

[allistarM]

These instructions don't work for me. I have jpeg-7 and jpeg-compat installed:

[ssuominen]

revdep-rebuild doesn't always get the build order correct, that's known issue.

you could use:

[allistarM]

So you think that there is something else that needs to be rebuilt before kdelibs, and that will stop kdelibs from looking for libjpeg.so.62?

It would be good what that package is, because as soon as I uninstall jpeg-compat, my desktop becomes pretty much unusable (at least important things like kontact and kmail stop working).

Here is the list of things revdep-rebuild wants to rebuild:

[ssuominen]