Undefined references when extending Child in repo "Base"

Hi Genodians,

I am attempting to extend the class Child (base/include/base/child.h) with an additional function. However, when compiling my test program, I receive an undefined references error, even though I added the implementation to src/lib/base/child.cc. My observation seems to be that the generated object file does not get linked into the executable but calling any other Child-related function works fine.

My child.h looks pretty much like this:

class Genode::Child : .... {

....

void test_print();

}

and in child.cc:

void Child::test_print() {

log(__PRETTY_FUNCTION__);

}

Is there anything I am overseeing? Thanks in advance!

Cheers, Simon