Soon to be removed from the Makefile (clutter)
# maintainer only, check for new modules
awk '/: checking whether to enable mod_/ \
{printf "%%%%%s%%%%libexec/apache24/%s.so\n", \
toupper($$8), $$8}' ${WRKSRC}/configure.upstream \
| ${TR} -d '"' \
| ${SORT} -u \
| ${GREP} -E -v '^%%MOD_(HTTP|ISAPI|LOG_CONFIG|PRIVILEGES|SO|UNIXD)%%'
Add
--enable-option-check
to the CONFIGURE_ARGS block and check the output of make configure