./configure CC=gcc9 CFLAGS="-march=znver1 -mtune=znver1 -O3" CXX=g++9 
CXXFLAGS="-march=znver1 -mtune=znver1 -O3"

make

make check

...

FAIL: t/tags-lisp-space.sh

...

============================================================================

Testsuite summary for GNU Automake 1.16.2
============================================================================
# TOTAL: 2915
# PASS:  2793
# SKIP:  81
# XFAIL: 40
# FAIL:  1
# XPASS: 0
# ERROR: 0
============================================================================
See ./test-suite.log
Please report to bug-automake@gnu.org
============================================================================