On Sunday 2019-03-17 18:19, Luis Ressel wrote: > ]) >-AC_SUBST(with_libxtables) >-AM_CONDITIONAL([BUILD_XTABLES], [test "x$with_libxtables" == xyes]) >+AM_CONDITIONAL([BUILD_XTABLES], [test "x$with_xtables" == xyes]) Not sure when this was introduced, by it needs to be a single = after all.