Re: [PATCH v2 1/2] make: move generated headers to qemu-build/

["Michael S. Tsirkin" <mst@redhat.com>]

On Thu, Mar 22, 2018 at 02:42:55PM -0500, Eric Blake wrote:
> On 03/22/2018 02:27 PM, Michael S. Tsirkin wrote:
> > Make sure all generated files go into qemu-build subdirectory.
> > We can then include them like this:
> >   #include "qemu-build/trace.h"
> > 
> > This serves two purposes:
> > - make it easy to detect which files are in the source
> >    directory (a bit more work for writers, easier for readers)
> > - reduce chances of conflicts with possible stale files in source
> >    directory (which could be left over from e.g. old patches, etc)
> > 
> > This patch needs to be merged with patch 2  of series updating all
> > files: sending it separately to avoid spamming the list.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> > ---
> 
> > +++ b/Makefile
> > @@ -89,102 +89,102 @@ endif
> >   include $(SRC_PATH)/rules.mak
> > -GENERATED_FILES = qemu-version.h config-host.h qemu-options.def
> > -GENERATED_FILES += qapi/qapi-builtin-types.h qapi/qapi-builtin-types.c
> 
> Uggh - I really need to follow up on my threat to make smarter use of make
> variables and string manipulation to cut down on the boilerplate involved
> here.  Sadly, I'm not convinced that doing so is a 2.12 bugfix priority, so
> it isn't at the top of my work queue.
> 
> Overall, the patch is an interesting idea.  I'm still not 100% sold on it
> (as you say, it's now slightly more work for writers), but I'm not coming up
> with any solid reasons why it should not be applied (at least, for 2.13 -
> doing it during freeze for 2.12 is a bit harder to justify).

It's up to Peter really: it helps reduce conflicts if we apply patches
like this during freeze.  But with enough effort on Pater's part it's
not a huge deal.

> -- 
> Eric Blake, Principal Software Engineer
> Red Hat, Inc.           +1-919-301-3266
> Virtualization:  qemu.org | libvirt.org