On 11/20/2009 4:18 PM, Peng Yu wrote:
On Fri, Nov 20, 2009 at 5:11 PM, David Boyce<[email protected]> wrote:
On Fri, Nov 20, 2009 at 5:42 PM, Peng Yu<[email protected]> wrote:
Is there way to specify a dependence on a directory?
directory: somefile
some_command
If any file in 'directory' is older than 'somefile', then I want to
run 'some_command'. I'm wondering how to do this.
Then you don't want a dependence on a directory. You want to depend on
the full set of files _within_ the directory, a very different thing.
I suspect $(wildcard $(dir)/*) is what you want.
But if there are no files in the directory, I still want some_command
to run. How to do it?
In that case, you don't want $(wildcard $(dir)/*). Rather, you want an
explicit list of files you expect to find in that directory after the
commands are executed.
John
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