I'm running Mandrake or Slackware and applications can't find SDL!
You probably have a version of SDL built with aRts sound support, and the KDE libraries are not installed in a system standard location. You need to add the directory containing libartsc.so.0 to the file /etc/ld.so.conf and then run the command "ldconfig". On newer versions of Mandrake, this directory is: /opt/kde/lib
[Note : kde has never been in /opt under Mandrake. Suse does that OTOH. Does this apply to Suse ? - Stephane]
In most cases you can easily find libartsc.so.0 by typing:
locate libartsc.so.0
or perhaps
locate libartsc.so