OK, I understand now Eli's reasons of assigning "failure" and "success". Thank
you.
So now your question to Paul is this, let me rephrase myself:
SHELL=cmd.exe
vpath %.s foobar0 foobar1
%.o: %.s
echo $<
foobar0/foobar.s:
(and as always, foobar.s only in foobar1, not in foobar0).
Here, the current behavior of make is
C:\tmp>make foobar.o
echo foobar0/foobar.s
How can this possibly be "correct"?? GNU make manual only states that for the
rule with no commands or prerequisites, make "imagines" the target has been
updated, even if it does not exist. People are using this property, to prevent
failure if the file does not exist, for example, for auto-dependencies in the
well-known website
http://make.paulandlesley.org/autodep.html
This is not going to work, if make still found foobar0/foobar.s after the user
deleting it.
Mark
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