[CMake] intercomponent link dependencies?

[Nico Schlömer]

> Overlinking is actually only an issue for dynamic libraries. So as long as you're absolutely sure that you only have static libraries, you're fine.

Oh, I was thinking it is *unclean* to have a link line like

-llibrarya /usr/local/local/liblapack.a --llibraryb
/usr/local/local/liblapack.a     (1)

-- which (disappointingly?) is exactly what happens now that I have
FindLibraryA.cmake and FindLibraryB.cmake, both equipped with

  SET_TARGET_PROPERTIES(A PROPERTIES
                         IMPORTED_LOCATION "${A_LIBRARY}"
                         IMPORTED_LINK_INTERFACE_LIBRARIES
"${A_LINK_INTERFACE_LIBRARIES}"
                       )

where both ${A_LINK_INTERFACE_LIBRARIES} and
${B_LINK_INTERFACE_LIBRARIES} contain /usr/local/local/liblapack.a.


> Does the IMPORTED_LINK_INTERFACE_LIBRARIES thing work?
So, yeap, it works, but I expected CMake to clean up after me
dependency-wise -- instead of (1), this

-llibrarya --llibraryb /usr/local/local/liblapack.a     (1')

would be sufficient. My knowledge on the linking process itself is
unfortunately not deep enough to tell if that makes an actual
difference.

Cheers,
Nico