sh: /bin/no/such/command: not found make: "varshell.mk" line 5: warning: "/bin/no/such/command" returned non-zero status make: "varshell.mk" line 6: warning: "kill -14 $$" exited on a signal make: "varshell.mk" line 7: warning: "false" returned non-zero status make: "varshell.mk" line 8: warning: "echo "output before the error"; false" returned non-zero status EXEC_FAILED='' TERMINATED_BY_SIGNAL='' ERROR_NO_OUTPUT='' ERROR_WITH_OUTPUT='output before the error' NO_ERROR_NO_OUTPUT='' NO_ERROR_WITH_OUTPUT='this is good' exit status 0