CMake/Help/variable/CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE.rst

CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE
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Whether to force prepending of project include directories.

This variable affects the order of include directories generated in compiler
command lines.  If set to 'ON', it causes the :variable:`CMAKE_SOURCE_DIR` and
the :variable:`CMAKE_BINARY_DIR` to appear first.