-AM_CFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/src -I$(top_srcdir)/tests/utils/
+# SPDX-License-Identifier: GPL-2.0-only
+
+AM_CPPFLAGS += -I$(top_srcdir)/tests/utils/
LIBTAP=$(top_builddir)/tests/utils/tap/libtap.la
LIBCONFIG=$(top_builddir)/src/common/config/libconfig.la