RFC: improve build-id mismatch error reporting

[Frank Ch. Eigler]

Timo Juhani Lindfors <timo.lindfors@iki.fi> writes:

> [...]
> The code compares UTS_RELEASE first and only then looks at
> UTS_VERSION. Do you still think it makes sense to print UTS_RELEASE in
> the UTS_VERSION mismatch case? (as in that case UTS_RELEASE matched
> correctly).

Yes, probably, to give user more hints.


> Autoconf test won't work since kernel versions can change after
> systemtap has been built?
> I looked around a bit but I'm not quite sure how to test this runtime.

Aha, but we have a run-time autoconf scheme (cribbed originally from
some vmware makefiles).  See buildrun.cxx, runtime/autoconf-*.

- FChE