[...]

  if ! /bin/sh ../../libtool execute /bin/sh ../../run-test.sh ../.. ./$bin; then exit 1; fi; \
done
Illegal instruction 
--16002-- WARNING: Serious error when reading debug info
--16002-- When reading debug info from /tmp/B.6AmtZS/BUILD/dovecot-2.3.17.1/src/lib/test-lib:
--16002-- Can't make sense of .rodata section mapping
--16002-- WARNING: Serious error when reading debug info
--16002-- When reading debug info from /lib64/ld-2.32.so:
--16002-- Can't make sense of .rodata section mapping
vex amd64->IR: unhandled instruction bytes: 0xF3 0xF 0x1E 0xFA 0x55 0x48
==16002== valgrind: Unrecognised instruction at address 0x4001e20.
==16002== Your program just tried to execute an instruction that Valgrind
==16002== did not recognise.  There are two possible reasons for this.
==16002== 1. Your program has a bug and erroneously jumped to a non-code
==16002==    location.  If you are running Memcheck and you just saw a
==16002==    warning about a bad jump, it's probably your program's fault.
==16002== 2. The instruction is legitimate but Valgrind doesn't handle it,
==16002==    i.e. it's Valgrind's fault.  If you think this is the case or
==16002==    you are not sure, please let us know and we'll try to fix it.
==16002== Either way, Valgrind will now raise a SIGILL signal which will
==16002== probably kill your program.
==16002== 
==16002== Process terminating with default action of signal 4 (SIGILL)
==16002==  Illegal opcode at address 0x4001E20
==16002==    at 0x4001E20: (within /lib64/ld-2.32.so)
==16002==    by 0x4001097: (within /lib64/ld-2.32.so)
Failed to run: ./test-lib
make[4]: *** [Makefile:3649: check-local] Error 1
make[4]: Leaving directory '/tmp/B.6AmtZS/BUILD/dovecot-2.3.17.1/src/lib'
make[3]: *** [Makefile:2995: check-am] Error 2
make[3]: Leaving directory '/tmp/B.6AmtZS/BUILD/dovecot-2.3.17.1/src/lib'
make[2]: *** [Makefile:2997: check] Error 2
make[2]: Leaving directory '/tmp/B.6AmtZS/BUILD/dovecot-2.3.17.1/src/lib'
make[1]: *** [Makefile:572: check-recursive] Error 1
make[1]: Leaving directory '/tmp/B.6AmtZS/BUILD/dovecot-2.3.17.1/src'
make: *** [Makefile:701: check-recursive] Error 1
error: Bad exit status from /tmp/B.6AmtZS/BUILD/tmp/rpm-tmp.5021 (%build)
RPM build errors:
    Bad exit status from /tmp/B.6AmtZS/BUILD/tmp/rpm-tmp.5021 (%build)
ended at: Sat Jan 22 19:46:16 2022, done in 0:04:38.346920
error: No files produced.
+ chmod -R u+rwX /tmp/B.6AmtZS/BUILD
+ rm -rf /tmp/B.6AmtZS/tmp /tmp/B.6AmtZS/BUILD
+ rm -rf /tmp/B.6AmtZS
Begin-TLD-Builder-Info
Build-Time: user:508.58s sys:172.24s real:279.90s (faults io:28 non-io:34995188)
End-TLD-Builder-Info