Re: [Xen-devel] XEN tools for ARM64 build issue

[Julien Grall <julien.grall@xxxxxxx>]

Hi Wei,

On 25/11/16 15:55, Wei Liu wrote:
> On Fri, Nov 25, 2016 at 03:30:44PM +0000, Julien Grall wrote:
> > Hi all,
> >
> > On 23/11/16 10:47, Jan Beulich wrote:
> > > > > > On 23.11.16 at 11:29, <andrii.anisov@xxxxxxxxx> wrote:
> > > > Building latest XEN master branch
> > > > (58bd0c7985890e0292212f94a56235228a3445c3) for salvator-x platform using
> > > > the same yocto as here
> > > > https://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/Salvator-X
> > > > I've
> > > > faced following issue:
> > > >
> > > > Maximum error count (200) exceeded
> > > >
> > > > /home/aanisov/DEV/salvatorx-new/build/tmp/work/aarch64-poky-linux/xen/4.8.0+
> > > > gitAUTOINC+58bd0c7985-r0/git/tools/libxl/dsdt_anycpu_arm.asl
> > > >     3:         OperationRegion ( MSUM, SystemMemory, \_SB.MSUA, 1 )
> > > > Error    4084 -
> > > >
> > > >                         Object does not exist ^  (\_SB.MSUA)
> > > Looking at the source I see that this statement gets included for
> > > x86 only. Are you perhaps doing a cross build of the ARM tools
> > > on an x86 host? If so, it looks like some work would be needed to
> > > make that work (again? not sure if it ever worked), as there are
> > > various build host architecture conditionals in mk_dsdt.c.
> > I gave a look at this error, I had in mind to replace all the #if
> > defined(__*__) by the CONFIG_* equivalent.
> >
> > However, the CONFIG_* are not available for the tools. I guess we need to
> > add them in the tools config.h. Any opinions?
> I would rather we limit the scope to libacpi.
>
> How do you cross-compile tools?
>
> If CONFIG_ARM_64 is usable within Makefile, we can do something like:
>
>  MKDSDT_CFLAGS-$(CONFIG_ARM_64) = -DCONFIG_ARM_64
>  MKDSDT_CFLAGS-$(CONFIG_X86) = -DCONFIG_X86
>
> Then add MKDIST_CFLAGS-y to mkdsdt's build rune.
>
> Change mkdsdt.c source code accordingly.
This would work. I was actually expecting a nicer way :).

I will prepare a patch based on this suggestion.

Cheers,

--
Julien Grall

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