CMP0099

Target link properties INTERFACE_LINK_OPTIONS, INTERFACE_LINK_DIRECTORIES and INTERFACE_LINK_DEPENDS are now transitive over private dependencies of static libraries.

In CMake 3.16 and below the interface link properties attached to libraries are not propagated for private dependencies of static libraries. Only the libraries themselves are propagated to link the dependent binary. CMake 3.17 and later prefer to propagate all interface link properties. This policy provides compatibility for projects that have not been updated to expect the new behavior.

The OLD behavior for this policy is to not propagate interface link properties. The NEW behavior of this policy is to propagate interface link properties.

This policy was introduced in CMake version 3.17. Use the cmake_policy() command to set it to OLD or NEW explicitly. Unlike many policies, CMake version 3.19.0-rc3 does not warn when this policy is not set and simply uses OLD behavior.