Install the prerequisites noted in the README file if you’re building swfdec and swfdec-mozilla from scratch. I found I only needed to install liboil-devel and gstreamer-plugins-base-devel in order for it to build without complaint. When installing from binary on my 64-bit os, I found I was missing a lot of 32-bit packages needed by the plugin, so my dependencies needed by swfdec-mozilla.i386 rpm was long.

My old method was to install some sort of flash player plugin named something like “libflashplayer.so” and copy it from /usr/lib or /usr/lib64 to the plugins directory under “~/.mozilla/plugins/”. But now that’s old school. All you need to do in Fedora 12 is: