INCLUDE_DIRECTORIES 属性和 INTERFACE_INCLUDE_DIRECTORIES 属性之间的区别在于传递性.

The difference between the INCLUDE_DIRECTORIES property and the INTERFACE_INCLUDE_DIRECTORIES property is transitivity.

改为设置 INTERFACE_INCLUDE_DIRECTORIES.

http://www.cmake.org/cmake/help/v3.0/manual/cmake-buildsystem.7.html#transitive-usage-requirements