5:41:02easyeslyrus: You have to set the appropiate compiler options for the jdk version you ar using.
5:43:02easyeThere is now a script which does this <https://github.com/armedbear/abcl/blob/master/ci/create-abcl-properties.bash>, and ant targets <https://github.com/armedbear/abcl/blob/master/build.xml#L1250> for convenience.
5:57:35easyeAnd I documented this in the README <https://github.com/armedbear/abcl/blob/master/README#L147>