Building library: micronucleus_lib...
gcc -Ilibrary -O -g -D LINUX -c library/micronucleus_lib.c
In file included from library/micronucleus_lib.c:30:0:
library/micronucleus_lib.h:35:80: fatal error: usb.h: No such file or directory
#include <usb.h> // this is libusb, see http://libusb.sourceforge.net/
Makefile:49: recipe for target 'micronucleus_lib' failed
make: *** [micronucleus_lib] Error 1