[Mesa-maintainers] make rules for generated files

[Matt Turner]

On Fri, Dec 16, 2016 at 9:38 PM, Jonathan Gray <jsg at jsg.id.au> wrote:
> I'm not sure if others encounter this, but a problem I run into with
> using the Mesa release tarballs is that if timestamps on files change

First obvious question: why do the timestamps change?

> rules to regenerate files get called even if python/xxd/bison etc
> are not found.  In this case the Makefiles overwrite the generated
> files in the distfile with empty files causing the build to error out.