CMake linking errors [ctwmlib]

I have been running into linking errors when trying to build versions
after the inclusion of ctwmlib.
The credit for this (fix?) is not mine, though it should be because of
the linking of $(CTWMLIBS) to ctwm instead of the new ctwmlib:

CMakeLists.txt:
 target_link_libraries(ctwm ${CTWMLIBS})
  -> target_link_libraries(ctwmlib ${CTWMLIBS})

changing that makes it build successfully again for me, though if there
is something I have missed or misunderstood I apologize.