cpp: "test_libqrencode.c", line 2: error 4036: Can't open include file 'qrencode.h'.
===> You must install libqrencode(http://megaui.net/fukuchi/works/qrencode/index.en.html) <=== at tools/probe_libqrencode.pl line 19.
	...propagated at Makefile.PL line 7.