Created attachment 14392 [details]
possible patch

The recent git_version related updates (a73db1bdee, 2899dcf6a5) break the `make rpm` target.   Thing is that git_version.sh doesn't find a git repo, and generates:

/* No git repo found, probably building from dist tarball */
#undef GIT_REPO

Which, in this case, is a false assumption implicitly causing the following build time error:

In file included from session.cxx:25:
session.cxx: In member function 'std::string systemtap_session::version_string()':
version.h:13:49: error: 'GIT_PRETTY_REV' was not declared in this scope
   13 |   (STAP_EXTRA_VERSION[0] ? STAP_EXTRA_VERSION : GIT_PRETTY_REV)
      |                                                 ^~~~~~~~~~~~~~
session.cxx:492:62: note: in expansion of macro 'STAP_EXTENDED_VERSION'
  492 |   return string (VERSION) + "/" + elfutils_version2 + ", " + STAP_EXTENDED_VERSION;
      |                                                              ^~~~~~~~~~~~~~~~~~~~~
make[3]: *** [Makefile:1216: stap-session.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory '/home/stapbuilduser/rpmbuild/BUILD/systemtap-4.8'
make[2]: *** [Makefile:2135: all-recursive] Error 1
make[2]: Leaving directory '/home/stapbuilduser/rpmbuild/BUILD/systemtap-4.8'
make[1]: *** [Makefile:800: all] Error 2
make[1]: Leaving directory '/home/stapbuilduser/rpmbuild/BUILD/systemtap-4.8'
error: Bad exit status from /var/tmp/rpm-tmp.EAV0bE (%build)