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- include_directories
- -------------------
- Add include directories to the build.
- ::
- include_directories([AFTER|BEFORE] [SYSTEM] dir1 [dir2 ...])
- Add the given directories to those the compiler uses to search for
- include files. Relative paths are interpreted as relative to the
- current source directory.
- The include directories are added to the :prop_dir:`INCLUDE_DIRECTORIES`
- directory property for the current ``CMakeLists`` file. They are also
- added to the :prop_tgt:`INCLUDE_DIRECTORIES` target property for each
- target in the current ``CMakeLists`` file. The target property values
- are the ones used by the generators.
- By default the directories specified are appended onto the current list of
- directories. This default behavior can be changed by setting
- :variable:`CMAKE_INCLUDE_DIRECTORIES_BEFORE` to ``ON``. By using
- ``AFTER`` or ``BEFORE`` explicitly, you can select between appending and
- prepending, independent of the default.
- If the ``SYSTEM`` option is given, the compiler will be told the
- directories are meant as system include directories on some platforms.
- Signalling this setting might achieve effects such as the compiler
- skipping warnings, or these fixed-install system files not being
- considered in dependency calculations - see compiler docs.
- Arguments to ``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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