make: var-eval-short.mk:45: In the :@ modifier, the variable name "${FAIL}" must not contain a dollar while parsing "${:Uword:@${FAIL}@expr@}" Parsing var-eval-short.mk:158: .if 0 && ${0:?${FAIL}then:${FAIL}else} CondParser_Eval: 0 && ${0:?${FAIL}then:${FAIL}else} Var_Parse: ${0:?${FAIL}then:${FAIL}else} (parse) Parsing modifier ${0:?...} Var_Parse: ${FAIL}then:${FAIL}else} (parse) Modifier part: "${FAIL}then" Var_Parse: ${FAIL}else} (parse) Modifier part: "${FAIL}else" Result of ${0:?${FAIL}then:${FAIL}else} is "" (parse, defined) Parsing var-eval-short.mk:166: DEFINED= defined Global: DEFINED = defined Parsing var-eval-short.mk:167: .if 0 && ${DEFINED:L:?${FAIL}then:${FAIL}else} CondParser_Eval: 0 && ${DEFINED:L:?${FAIL}then:${FAIL}else} Var_Parse: ${DEFINED:L:?${FAIL}then:${FAIL}else} (parse) Parsing modifier ${DEFINED:L} Result of ${DEFINED:L} is "defined" (parse, regular) Parsing modifier ${DEFINED:?...} Var_Parse: ${FAIL}then:${FAIL}else} (parse) Modifier part: "${FAIL}then" Var_Parse: ${FAIL}else} (parse) Modifier part: "${FAIL}else" Result of ${DEFINED:?${FAIL}then:${FAIL}else} is "defined" (parse, regular) Parsing var-eval-short.mk:169: .MAKEFLAGS: -d0 ParseDependency(.MAKEFLAGS: -d0) Global: .MAKEFLAGS = -r -k -d cpv -d Global: .MAKEFLAGS = -r -k -d cpv -d 0 make: Fatal errors encountered -- cannot continue make: stopped making "all" in unit-tests exit status 1