[CMake] Libraries for a Target and/or its Dependents

[Wojciech Mamrak]

Hello,

The docs say [1]:
"Libraries and targets following PRIVATE are linked to, but are not
made part of the link interface."

If so, why does this snippet:

add_library(private_lib STATIC ...)
add_library(public_lib STATIC ...)

target_link_libraries(Test PRIVATE private_lib
                                    PUBLIC public_lib)
install(EXPORT ...)

sets Test's imported target's properties with:

IMPORTED_LINK_INTERFACE_LIBRARIES_RELEASE "private_lib;public_lib"

I thought BUILD_INTERFACE and INSTALL_INTERFACE generator expressions
can solve this, but it turns out BUILD_INTERFACE is propagated, and
INSTALL_INTERFACE is not, i.e.

IMPORTED_LINK_INTERFACE_LIBRARIES_RELEASE
"private_lib;public_lib;build_interface_lib"

regards

[1] http://www.cmake.org/cmake/help/v3.3/command/target_link_libraries.html#libraries-for-a-target-and-or-its-dependents