Build Golang projects properly with Makefiles

  BUILD=`git rev-parse HEAD`
  LDFLAGS=-ldflags "-X main.Version=${VERSION} -X main.Build=${BUILD}"
  # ...
  $(BINARY):
      go build ${LDFLAGS} -o {$BINARY} ./..

Please don't do that. This ties the build process to be run from inside the git repository, which starts to be a problem if you have any sane method of code deployment (building source packages). Think of something different.

And yes, there is a typo in the build rules.

  ${BINARY}: main.go
    go build $< -o $@

this way, make will know to re-build the binary only if the source code has changed.