I have a 'Value' node as a source in my build, I'm not sure how you could use
one as a target, and plenty of Alias nodes. They should work because
self.exists() returns True (well, it returns 1 for some reason) by default, and
then is overridden for a File node.
The one thing this isn't working for is completely fake targets where you
intentionally do something like
env.Command('not a real target', 'something', 'echo boo')
where nothing is generated. I'm not sure how to deal with that as it is a real
Phony target. I have a few AlwaysBuild targets but they actually do generate
something.
I suspect that a env.Phony(node) is needed which sets a 'phony' attribute in
the node, purely for the purpose of inverting the sense of this check (i.e. if
it's a Phony target, you *shouldn't* be generating the file).
----- Original Message -----
From: [email protected]
To: Tom Tanner (BLOOMBERG/ LONDON), [email protected]
At: Aug 22 2013 18:07:08
Some people use fake targets which would confuse this I think. Also what
about non-File nodes? (Aliases, Values) Not sure, just something to check.
On Thu, Aug 22, 2013 at 7:04 AM, Tom Tanner (BLOOMBERG/ LONDON) <
[email protected]> wrote:
> There was a discussion about this a while ago, and I got round to looking
> at it. I seem to have found a trivial solution, but it's so trivial I'm
> extremely worried by it.
>
> in Node/__init__.py:
> Add the following to built(self) after the self.clean() call
>
> if not self.exists():
> print "Warning: Cannot find target after building", self
>
> Am I missing something?
> (Clearly I'd like it to be an error but a warning to start off with would
> be safer...)
>
> _______________________________________________
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>
>
--
Gary
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