Re: How to specify a dependence on a directory?

[Maxim Yegorushkin]

On 20/11/09 22:42, Peng Yu 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.

The timestamps of directories get updated when you add or remove files 
in them. When you change existing files the directory timestamp does not 
get updated. Just update it manually after some files were changed in 
the directory, so that the directory timestamp is no older than those of 
the files in it:

directory: somefile
        some_command
        touch directory

--
Max