Compiling issues

[Ubuntu]

Hello.

I compiled Crystalspace from source and all worked fine, no errors, no warnings etc. But when I try to compile any extern CS-application my PC says something like

"cs/crystalspace.h:
cs/csgfx/whatever.h:
couldn't find csgfx/anytingelse.h no such file or directory"

That message disappears, when I change the crystalspace-code, not in my application, but that one that I downloaded.

My system:
AMD Athlon 64 3200+
2GB RAM
Geforce 6200 (256MB)
nForce 250
.
.
.

Slackware Linux 12.0
Kernel: Linux 2.6.21.5-smp
grafics-driver: not the newest version
gcc 4.2.1 (Target: i486-slackware-linux)

---- ubuntu

[Xoalin]

Linking to the libs properly?

cs-config is a handy util for dumping linking info by the way.