diff --git a/CMakeModules/Doc.cmake b/CMakeModules/Doc.cmake
new file mode 100644
index 0000000..9301d43
--- /dev/null
+++ b/CMakeModules/Doc.cmake
@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 2.8.12)
+
+# Prepare building doxygen documentation
+macro(LIBYANG_DOC)
+    find_package(Doxygen)
+    if(DOXYGEN_FOUND)
+        find_program(DOT_PATH dot PATH_SUFFIXES graphviz2.38/bin graphviz/bin)
+        if(DOT_PATH)
+            set(HAVE_DOT "YES")
+        else()
+            set(HAVE_DOT "NO")
+            message(AUTHOR_WARNING "Doxygen: to generate UML diagrams please install graphviz")
+        endif()
+        add_custom_target(doc
+                COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
+                WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+        string(REPLACE ";" " " DOXY_HEADERS "${headers};${PROJECT_BINARY_DIR}/src/version.h")
+        configure_file(Doxyfile.in Doxyfile)
+    endif()
+endmacro()