1make: "cond-token-var.mk" line 21: ok 2make: "cond-token-var.mk" line 28: Malformed conditional '${UNDEF} == ${DEF}' 3make: "cond-token-var.mk" line 34: Malformed conditional '${DEF} == ${UNDEF}' 4make: "cond-token-var.mk" line 44: Malformed conditional '${UNDEF}' 5make: Fatal errors encountered -- cannot continue 6make: stopped in unit-tests 7exit status 1 8