[yocto] Customizing task basehash

[Vuille, Martin (Martin)]

I have defined a class with a customized fetch task (that
copies files from a local directory to the ${S} directory).

I am looking for a way to cause the fetch task to run
whenever the contents of the local directory change
w.r.t. what was last fetched/copied to ${S}.

Seems to me that I could do this by including the hash
of the source directory contents into the basehash of
the fetch task.

But I can't see how to do that. It is possible, or am I
thinking in the wrong direction? Is there a better way
to achieve what I need?

MV
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20140918/f9566531/attachment.html>