make: "varmod-range.mk" line 43: Malformed conditional '${:range=5} != ""' make: "varmod-range.mk" line 66: Invalid number "x}Rest" != "Rest"" for ':range' modifier while evaluating "${:U:range=x}Rest" != "Rest"" with value "" make: "varmod-range.mk" line 76: Unknown modifier "x0" while evaluating "${:U:range=0x0}Rest" != "Rest"" with value "1" make: "varmod-range.mk" line 93: Unknown modifier "rang" while evaluating variable "a b c" with value "a b c" make: "varmod-range.mk" line 101: Unknown modifier "rango" while evaluating variable "a b c" with value "a b c" make: "varmod-range.mk" line 109: Unknown modifier "ranger" while evaluating variable "a b c" with value "a b c" make: Fatal errors encountered -- cannot continue make: stopped making "all" in unit-tests exit status 1