1make: "var-op-expand.mk" line 274: Unknown modifier "s,value,replaced," 2make: "var-op-expand.mk" line 278: warning: XXX Neither branch should be taken. 3make: "var-op-expand.mk" line 283: Unknown modifier "s,value,replaced," 4make: "var-op-expand.mk" line 285: warning: XXX Neither branch should be taken. 5make: Fatal errors encountered -- cannot continue 6make: stopped in unit-tests 7exit status 1 8