Re: [XEN PATCH v5 04/16] xen/build: have the root Makefile generates the CFLAGS

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Fri, Apr 24, 2020 at 02:30:56PM +0100, Anthony PERARD wrote:
> On Fri, Apr 24, 2020 at 03:01:32PM +0200, Jan Beulich wrote:
> > While committing this, in my pre-push build test I noticed that
> > presumably an earlier change of yours has caused
> > 
> > Makefile:103: include/config/auto.conf: No such file or directory
> > Makefile:106: include/config/auto.conf.cmd: No such file or directory
> > 
> > for a build in a completely fresh tree.
> 
> Are those presumably "warning" an issue? Are the files still missing
> after make has run? Didn't the build managed to build xen.gz?
> There is maybe a line saying that make will re-execute.
> 
> I've seen those error before, on older version of make. But it's just
> make complaining before even trying to update/create those files. But it
> just create those files and start over.
> 
> Also, that would be patch "build: include include/config/auto.conf in
> main Makefile" which introduce this behavior.

I'll prepare a patch to use "-include" instead of simply "include". That
will silent the warnings and nothing else should change. Linux's Kbuild
doesn't have this issue because we have to run `make menuconfig` or
equivalent which also generates the two auto.conf* files, which I didn't
notice until now.

-- 
Anthony PERARD