Compilation Error

make
rm -fr demo files/bindata.go
go-bindata
-pkg=files
-o=files/bindata.go
-prefix="files"
files/...
go build -o demo
main.go:6:2: no Go files in /home/oleg/Projects/go/src/github.com/hyperboloide/static/demo/files
Makefile:4: recipe for target 'all' failed
make: *** [all] Error 1