1make: "cond-token-number.mk" line 13: Malformed conditional (-0) 2make: "cond-token-number.mk" line 21: Malformed conditional (+0) 3make: "cond-token-number.mk" line 29: Malformed conditional (!-1) 4make: "cond-token-number.mk" line 37: Malformed conditional (!+1) 5make: "cond-token-number.mk" line 54: End of the tests. 6make: Fatal errors encountered -- cannot continue 7make: stopped in unit-tests 8exit status 1 9