[R] How to generate dependency file that can be used by gnu make?

[Peng Yu]

On Sun, Nov 15, 2009 at 8:45 PM, Peng Yu <pengyu.ut at gmail.com> wrote:
> gcc has options like -MM, which can generate the dependence files for
> a C/C++ file that I can be used by gnu make. I'm wondering if there is
> a tool that can generate dependence file for an R script.
>
> For example, I have an R script test.R
>
> #########test.R
> load('input.RData')
> save.image('output.RData')
>
>
> I want to generate a dependence file like the following. Is there a
> tool to do so?
>
> output.RData:test.R input.RData

Is there a way to automatically generate the output files that depends
on an R script and the input files and sourced files that are depended
by an R script? I don't see this option in R. But I wish this can be
implemented in future version of R.