Help/policy/CMP0027.rst
.. |REMOVED_IN_CMAKE_VERSION| replace:: 4.0 .. include:: include/REMOVED_PROLOGUE.rst
Conditionally linked imported targets with missing include directories.
CMake 2.8.11 introduced introduced the concept of
:prop_tgt:INTERFACE_INCLUDE_DIRECTORIES, and a check at cmake time that the
entries in the :prop_tgt:INTERFACE_INCLUDE_DIRECTORIES of an IMPORTED
target actually exist. CMake 2.8.11 also introduced generator expression
support in the :command:target_link_libraries command. However, if an
imported target is linked as a result of a generator expression evaluation, the
entries in the :prop_tgt:INTERFACE_INCLUDE_DIRECTORIES of that target were not
checked for existence as they should be.
The OLD behavior of this policy is to report a warning if an entry in
the :prop_tgt:INTERFACE_INCLUDE_DIRECTORIES of a generator-expression
conditionally linked IMPORTED target does not exist.
The NEW behavior of this policy is to report an error if an entry in
the :prop_tgt:INTERFACE_INCLUDE_DIRECTORIES of a generator-expression
conditionally linked IMPORTED target does not exist.
.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.0 .. |WARNED_OR_DID_NOT_WARN| replace:: warned .. include:: include/REMOVED_EPILOGUE.rst