Configure runs OK, as does make.
$ make check
Making check in src
make[1]: Nothing to be done for `check'.
Making check in doc
make[1]: Nothing to be done for `check'.
Making check in tools
make[1]: Nothing to be done for `check'.
Making check in tests
Making check in certs
/Library/Developer/CommandLineTools/usr/bin/make check-local
./maketestcert.sh
keys & certificates successfully generated
./maketestcert.sh finished
/Library/Developer/CommandLineTools/usr/bin/make check-local
./make_test
Mon 20 May 2019 15:21:58 AEST
stunnel 5.54 on x86_64-apple-darwin18.5.0 platform
Compiled/running with OpenSSL 1.1.1b 26 Feb 2019
Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI
test 010_require_cert ok
test 011_verify_peer ok
test 012_verify_chain ok
test 013_CRL_file ok
test 014_PSK_secrets ok
test 015_p12_cert ok
test 020_IPv6 skipped
test 021_FIPS skipped
test 022_bind ok
test 030_simple_execute ok
test 031_redirect ok
test 032_no_redirect ok
test 033_redirect_exec ok
test 034_no_redirect_exec ok
test 035_SNI ok
test 036_no_SNI ok
test 037_failover_prio1 ok
test 038_failover_prio2 ok
test 039_failover_rr ok
test 040_reload ok
test 041_exec_connect ok
test 042_inetd failed
error logs logs/042_inetd.log
test 043_session_delay ok
test 044_session_nodelay ok
test 045_include ok
test 046_resume_PSK ok
test 047_resume_redirect ok
test 048_resume_noredirect ok
test 050_ticket_secrets ok
test 110_failure_require_cert ok
test 111_failure_verify_peer ok
test 112_failure_verify_chain ok
test 113_failure_CRL_file ok
test 114_failure_PSK_secrets ok
test 115_failure_wrong_config ok
summary: success 32, skip 2, fail 1
./make_test finished
make[3]: *** [check-local] Error 1
make[2]: *** [check-am] Error 2
make[1]: *** [check-recursive] Error 1
make: *** [check-recursive] Error 1
James.