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32 lines
1.5 KiB
32 lines
1.5 KiB
INTERFACE_SYSTEM_INCLUDE_DIRECTORIES
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------------------------------------
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List of public system include directories for a library.
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Targets may populate this property to publish the include directories
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which contain system headers, and therefore should not result in
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compiler warnings. Additionally, system include directories are searched
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after normal include directories regardless of the order specified.
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When the :command:`target_include_directories` command is given the
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``SYSTEM`` keyword, it populates this property with values provided after the
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``PUBLIC`` and ``INTERFACE`` keywords.
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Projects may also get and set the property directly, but must be aware that
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adding directories to this property does not make those directories used
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during compilation. Adding directories to this property marks directories
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as system directories which otherwise would be used in a non-system manner.
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This can appear similar to duplication, so prefer the high-level
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:command:`target_include_directories` command with the ``SYSTEM`` keyword
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and avoid setting the property directly.
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When target dependencies are specified using :command:`target_link_libraries`,
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CMake will read this property from all target dependencies to mark the
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same include directories as containing system headers.
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Contents of ``INTERFACE_SYSTEM_INCLUDE_DIRECTORIES`` may use "generator
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expressions" with the syntax ``$<...>``. See the
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:manual:`cmake-generator-expressions(7)` manual for available expressions.
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See the :manual:`cmake-buildsystem(7)` manual for more on defining
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buildsystem properties.
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