make: "var-op-shell.mk" line 32: warning: "echo "failed"; false" returned non-zero status make: "var-op-shell.mk" line 39: warning: "false" returned non-zero status make: "var-op-shell.mk" line 62: warning: "kill $$" exited on a signal /bin/no/such/command: not found make: "var-op-shell.mk" line 69: warning: "/bin/no/such/command" returned non-zero status stderr Capturing the output of command "echo '$$$$'" Global: OUTPUT = $$$$ Global: .MAKEFLAGS = -r -k -d v -d Global: .MAKEFLAGS = -r -k -d v -d 0 exit status 0