CMP0042ΒΆ
Warning
The OLD behavior of this policy was removed
in CMake version 4.0.
This policy must be set to NEW by a call to
cmake_minimum_required() or cmake_policy().
MACOSX_RPATH is enabled by default.
CMake 2.8.12 and newer has support for using @rpath in a target's install
name. This was enabled by setting the target property
MACOSX_RPATH. The @rpath in an install name is a more
flexible and powerful mechanism than @executable_path or @loader_path
for locating shared libraries.
CMake 3.0 and later prefer this property to be ON by default. Projects
wanting @rpath in a target's install name may remove any setting of
the INSTALL_NAME_DIR and CMAKE_INSTALL_NAME_DIR
variables.
This policy was introduced in CMake version 3.0.
Prior to removal in CMake version 4.0, it could be
set by cmake_policy() or cmake_minimum_required().
If it was not set, CMake warned, and used OLD behavior.