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INTERFACE_SYSTEM_INCLUDE_DIRECTORIES
------------------------------------
List of public system include directories for a library.
Targets may populate this property to publish the include directories
which contain system headers, and therefore should not result in
compiler warnings. The :command:`target_include_directories(SYSTEM)`
command signature populates this property with values given to the
``PUBLIC`` and ``INTERFACE`` keywords. Projects may also get and set the
property directly.
When target dependencies are specified using :command:`target_link_libraries`,
CMake will read this property from all target dependencies to mark the
same include directories as containing system headers.
Contents of ``INTERFACE_SYSTEM_INCLUDE_DIRECTORIES`` may use "generator
expressions" with the syntax ``$<...>``. See the
:manual:`cmake-generator-expressions(7)` manual for available expressions.
See the :manual:`cmake-buildsystem(7)` manual for more on defining
buildsystem properties.
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