make: "cond-eof.mk" line 17: Malformed conditional (0 ${SIDE_EFFECT} ${SIDE_EFFECT2})
make: "cond-eof.mk" line 20: Malformed conditional (1 ${SIDE_EFFECT} ${SIDE_EFFECT2})
make: "cond-eof.mk" line 23: Malformed conditional ((0) ${SIDE_EFFECT} ${SIDE_EFFECT2})
make: Fatal errors encountered -- cannot continue
make: stopped in unit-tests
exit status 1