[CMake] Added function add_autogen_include.

scripts/cmake/Functions.cmake

@@ -65,3 +65,16 @@ macro(ADD_GOOGLE_TESTS executable)
         endforeach()
     endforeach()
 endmacro()
+
+# Adds the include dir containing the autogenerated files to the PUBLIC
+# interface of the given target
+function(add_autogen_include target)
+    get_property(IsMultiConfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+    if(IsMultiConfig)
+        target_include_directories(${target} PUBLIC
+            ${CMAKE_CURRENT_BINARY_DIR}/${target}_autogen/include_$<CONFIG>)
+    else()
+        target_include_directories(${target} PUBLIC
+            ${CMAKE_CURRENT_BINARY_DIR}/${target}_autogen/include)
+    endif()
+endfunction()
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