Fix warning:
warning: doxygen no longer ships with the FreeSans font.
You may want to clear or change DOT_FONTNAME.
Otherwise you run the risk that the wrong font is being used for dot generated graphs.
Fix warnings:
warning: Tag `SYMBOL_CACHE_SIZE' at line 299 of file `./Doxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
warning: Tag `SHOW_DIRECTORIES' at line 487 of file `./Doxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
warning: Tag `HTML_ALIGN_MEMBERS' at line 823 of file `./Doxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
warning: Tag `USE_INLINE_TREES' at line 976 of file `./Doxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
warning: Tag `XML_SCHEMA' at line 1169 of file `./Doxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
warning: Tag `XML_DTD' at line 1175 of file `./Doxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
nfc-mfclassic.c:623:6: warning: function declaration isn’t a prototype [-Wstrict-prototypes]
bool is_directwrite()
^~~~~~~~~~~~~~
nfc-mfclassic.c: In function ‘is_directwrite’:
nfc-mfclassic.c:623:6: warning: old-style function definition [-Wold-style-definition]