[cmake-developers] Mixing generator expressions and debug|optimized|general keywords in target_link_libraries()

[Nils Gladitz]

I tried wrapping the libraries returned by FindBoost.cmake in 
$<BUILD_INTERFACE> in a target_link_libraries() call and noticed that 
this breaks because of the debug/optimized keywords that the find module 
inserts.

Specifically it results in CMake trying to link e.g. "optimized.lib".

Should/could these keywords be handled at generation time (after 
generator expressions expansion)?

There don't seem to be generator expressions that correspond to the 
debug/optimized keywords exactly. Can/should there be?

e.g. $<DEBUG:> and $<OPTIMIZED:> output expressions.
The former expanding when the current configuration is listed in the 
directory property DEBUG_CONFIGURATIONS.

Nils