[Grml] Error : C preprocessor "lib/cpp" fails sanity check when compiling Bacula 2.2.8 on grml 1.1 rc

[Peter]

Hi
Does anybody knows what that means ?
I made sure that I have build-essentials, linux-headers , gcc-4.2 , but 
all this has already been on the dist.

I found many, many posts concerning this error on Google, but I just can 
not figure out what it means in my context

Thanks for your help
Peter