libtoolize: linking file `sntp/m4/libtool.m4' Indeed, that seems like it should work, because the aclocal invocation from autoreconf is looking into sntp/m4 (and <otherdirs>/m4 too) and finds other files there:
.. autoreconf: running: aclocal --verbose --verbose -I sntp/m4 -I sntp/libevent/m4 -I sntp/libopts/m4 aclocal: found macro SNTP_PROBLEM_TESTS in sntp/m4/sntp_problemtests.m4: 10 .. But I think I need to leave further debugging on that to you ... --best, karl.