make: "cond-token-string.mk" line 13: Unknown modifier "Z" make: "cond-token-string.mk" line 13: Malformed conditional ("" != "${:Uvalue:Z}") make: "cond-token-string.mk" line 22: xvalue is not defined. make: "cond-token-string.mk" line 28: Malformed conditional (x${:Uvalue} == "") make: "cond-token-string.mk" line 37: Expected. CondParser_Eval: "UNDEF" make: "cond-token-string.mk" line 46: The string literal "UNDEF" is not empty. CondParser_Eval: " " make: "cond-token-string.mk" line 54: The string literal " " is not empty, even though it consists of whitespace only. CondParser_Eval: "${UNDEF}" make: "cond-token-string.mk" line 63: An undefined variable in quotes expands to an empty string, which then evaluates to false. CondParser_Eval: "${:Uvalue}" make: "cond-token-string.mk" line 68: A nonempty variable expression evaluates to true. CondParser_Eval: "${:U}" make: "cond-token-string.mk" line 76: An empty variable evaluates to false. CondParser_Eval: ("${VAR}") CondParser_Eval: "quoted" == quoted Comparing "quoted" == "quoted" make: Fatal errors encountered -- cannot continue make: stopped in unit-tests exit status 1