Message details and related content
Junio C Hamano [off-list ref] writes:
#!/bin/sh cat >make.file <<\EOF all:: ifeq ($(FSMONITOR_DAEMON_BACKEND),) echo it is empty endif ifdef FSMONITOR_DAEMON_BACKEND
An obvious typo. This must be "ifndef", of course.
echo it is undefined endif EOF echo "unset???" make -f make.file echo "set to empty???" make -f make.file FSMONITOR_DAEMON_BACKEND= These two make invocations will give us the same result, showing that "is it set to empty" and "is it unset" are the same.