1 make: "echo word; false" returned non-zero status 2 make: "echo word; false" returned non-zero status 3 Global: _ = # (empty) 4 Var_Parse: ${:!echo word; ${:Ufalse}!} (eval-keep-dollar-and-undefined) 5 Evaluating modifier ${:!...} on value "" (eval-keep-dollar-and-undefined, undefined) 6 Modifier part: "echo word; false" 7 Capturing the output of command "echo word; false" 8 make: "echo word; false" returned non-zero status 9 Result of ${:!echo word; ${:Ufalse}!} is "word" (eval-keep-dollar-and-undefined, defined) 10 Global: _ = word 11 Global: .MAKEFLAGS = -r -k -d v -d 12 Global: .MAKEFLAGS = -r -k -d v -d 0 13 exit status 0 14