How to specify imported dependencies of an OBJECT library?

Question

I have an OBJECT library objlib which is linked into the main target maintarget. The objlib has a dependent library, say,

Answer 1

As of CMake 3.12, you can now use target_link_libraries on object libraries to get usage requirements.

Using 3.12, this approach that you mentioned should work:

add_library(objlib OBJECT ...)
target_link_libraries(objlib ZLIB::ZLIB)