)

var (
	errBadELF    = errors.New("malformed ELF binary")
	errNoBuildID = errors.New("no NT_GNU_BUILD_ID found in ELF binary")
)

// elfBuildID returns the GNU build ID of the named ELF binary,
// without introducing a dependency on debug/elf and its dependencies.
func elfBuildID(file string) (string, error) {
	buf := make([]byte, 256)
	f, err := os.Open(file)
	if err != nil {
		return "", err
	}
	defer f.Close()