@sort function_list.h | uniq > function_list_unique.h
@rm temp.xml
-# Update all Doxygen configuration files to the latest Doxygen version - force Markdown support to be disabled
+# Update all Doxygen configuration files to the latest Doxygen version
upgrade-doxygen:
@echo Upgrading Doxygen.conf files...
@for doxygen_conf in `find $(LUFA_ROOT) -name Doxygen.conf`; do \