In build-infra, the adhoc build version string is only updated at configure time. This is in contrast with the old build, were it was updated at least when a make clean && make was executed, and probably at other times as well if the correct make rules were triggered.

We should at least mimick the old behavior, but if possible, an even better behavior would be to update the version string if "significant" changes were made. A pure rebuild with no changes should probably not have the payload of updating the version, but we could possibly have a dependency from, let's say, all proper source code files to a make rule that updates the version string, so that whenever a real source code file is changed, the adhoc version string is updated.