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+CMAKE_INCLUDE_CURRENT_DIR
+-------------------------
+
+Automatically add the current source- and build directories to the include path.
+
+If this variable is enabled, CMake automatically adds
+:variable:`CMAKE_CURRENT_SOURCE_DIR` and :variable:`CMAKE_CURRENT_BINARY_DIR`
+to the include path for each directory. These additional include
+directories do not propagate down to subdirectories. This is useful
+mainly for out-of-source builds, where files generated into the build
+tree are included by files located in the source tree.
+
+By default ``CMAKE_INCLUDE_CURRENT_DIR`` is ``OFF``.