Hello Brian,
* [EMAIL PROTECTED] wrote on Fri, Oct 03, 2008 at 12:04:04AM CEST:
> I'm trying to create an "archive" (copy of the project) as follows:
> The top level Makefile creates the directory and copies some stuff
> into it. Then it recurses into subdirectories, and tells them to add
> their own files to the directory it created.
Sounds like you're more or less doing manually what Automake provides
with its 'distdir' rule.
> If the subdirectory
> Makefiles decide to actually add anything to the directory, they touch
> it to make it up to date.
That's the problem, AFAICS: you cannot have several rules updating the
same file, that will confuse make.
Whenever you can't express the dependencies between files as a directed
tree, you have to either use stamp files, and/or reinvoke make within a
rule to let it recompute the set of needed rules based on updated
timestamps.
For example, post-update actions can typically be realized like this:
target: deps...
update_target
$(MAKE) post-action-for-target
Hope that helps to get you going (otherwise please report back).
Cheers,
Ralf
