cmake: add docu for component parameter
@@ -9,6 +9,7 @@ find_package (Doxygen QUIET)
# folder is the folder where it will be built
# file is the file name to set a dependency to
# install is where it should be installed
+# target_component is the component name for component-specifc installation
# ~~~
macro (do_doc target folder file install target_component)
