[CMake] Relink on library rebuild dilema

[Sebastian Schaetz]

Michael Hertling <mhertling at ...> writes:

> 1) In the top-level CMakeLists.txt, you might say
> 
> SET_SOURCE_FILES_PROPERTIES(
>     main.cpp PROPERTIES OBJECT_DEPENDS
>     ${CMAKE_CURRENT_BINARY_DIR}/kernels/libkernel_executable.a
> )
> 
> When libkernel_executable.a has changed, this results in recompiling
> main.cpp - a penalty - and the desired relinking of main_target. If
> main.cpp's recompilation is expensive you may possibly add an empty
> cpp file to main_target's sources and impose the property on that.
> 

Wow, those suggestions all sound great and I'm completely unfamiliar with them
(so I think there's a good chance they will work). I will try them as soon as
possible! Thanks a lot for the suggestions.

Sebastian