slackware 13.37 failed to install Audacity 2.0.0
I have Jack installed. A long time ago.
Anyway, I dug around on the internet looking for
systemdeps.h and found it is part of the
libjack-jackd2-dev package. I found one for
Debian and installed it on Debian, and amongst
the files installed was systemdeps.h.
So now I need to find a libjack-jackd2-dev
for Slackware. Maybe I'll find it today.