1make: "directive-export-gmake.mk" line 71: Invalid line 'export VAR=${:U1}', expanded to 'export VAR=1' 2 in .for loop from directive-export-gmake.mk:67 with value = 1 3make: "directive-export-gmake.mk" line 85: 16:00:00 4make: "directive-export-gmake.mk" line 92: Variable/Value missing from "export" 5make: Fatal errors encountered -- cannot continue 6make: stopped in unit-tests 7exit status 1 8