[BRLTTY] error durring ./configure

[N B]

Hi, I am trying to build brltty on cygwin64 and I am noticing this error, 

configure: WARNING: usb.h: present but cannot be compiled
configure: WARNING: usb.h:     check for missing prerequisite headers?
configure: WARNING: usb.h: see the Autoconf documentation
configure: WARNING: usb.h:     section "Present But Cannot Be Compiled"
configure: WARNING: usb.h: proceeding with the compiler's result
configure: WARNING:     ## --------------------------------------- ##
configure: WARNING:     ## Report this to http://mielke.cc/brltty/ ##
configure: WARNING:     ## --------------------------------------- ##

It seemed like something that might have a known solution (since it says to contact brltty dev), so I was wondering if anyone knew what it was?
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