KDevelop & library

I try to write a small app (C++) in KDevelop 3.0.4, which uses ipq library. What I must to do to allow my program to compile?

I've set up in project options a CPPFLAGS="-I/usr/include/" and LDFLAGS="-L/usr/lib/ -lipq".
I've included files libipq.h and netfilter.h (with right path).
Compile=>"undefined reference to `ipq_perror(char const*)".

Please, help...

Do you get a line number for the error?? Or calling function?

That may let you trace the error.

Also there are some compile time debuggers out there you might want to look for. No good ones come to mind right now.