There is at least one known deficiency for mkimage-profiles:
build.log will be truncated if verbose mode is enabled and
hasher version is lower than 1.3.22.

The check is done here since it's where the logging is arranged,
and doing it in image.in/Makefile would result in the warning
about log-truncating software being truncated by the said software.

Thanks Max Kosmach for reporting this inobviousity.