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CMP0041
-------
Error on relative include with generator expression.
Diagnostics in CMake 2.8.12 and lower silently ignored an entry in the
:prop_tgt:`INTERFACE_INCLUDE_DIRECTORIES` of a target if it contained a generator
expression at any position.
The path entries in that target property should not be relative. High-level
API should ensure that by adding either a source directory or a install
directory prefix, as appropriate.
As an additional diagnostic, the :prop_tgt:`INTERFACE_INCLUDE_DIRECTORIES` generated
on an :prop_tgt:`IMPORTED` target for the install location should not contain
paths in the source directory or the build directory.
The OLD behavior for this policy is to ignore relative path entries if they
contain a generator expression. The NEW behavior for this policy is to report
an error if a generator expression appears in another location and the path is
relative.
This policy was introduced in CMake version 3.0. CMake version
|release| warns when the policy is not set and uses OLD behavior. Use
the cmake_policy command to set it to OLD or NEW explicitly.
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