[CMake] BUILD_INTERFACE genex used even in install(EXPORT...

[Stephen Kelly]

Mueller-Roemer, Johannes Sebastian wrote:

> For clarification:
> 
> As an imported target can't have debug and optimized keywords, I can't
> simply use $<BUILD_INTERFACE:${Boost_LIBRARIES}>
> $<INSTALL_INTERFACE:\${Boost_LIBRARIES}> But have to do
> $<BUILD_INTERFACE:
> $<$<CONFIG:Debug>:
> ...

Yes, but for the user of the target, it's just

 target_link_libraries(mytgt Boost::Coroutine)

This is academic though anyway until someone decides to submit and maintain 
IMPORTED targets for Boost, or until Boost decides to make them available 
itself. So, for now, you are correct, it's verbose.

Thanks,

Steve.