The problem is more or less solved: I switched to the latest nightly built version of C::B and apparently the IDE was able to call the linker correctly. At least is seems as there were no errors in my static wx libraries. Still, i don't know how tell C::B 1r2 how to make a static executable. Moreover, I've still problems with setting search paths correctly, but a will post this question as a separate item.
Again thanks for your reply