Re: [Xen-devel] [PATCH RESEND 04/14] tools: add ACPI tables relevant definitions

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Jun 06, 2016 at 06:27:25PM +0800, Shannon Zhao wrote:
> 
> 
> On 2016/6/6 18:11, Julien Grall wrote:
> > Hi Stefano,
> > 
> > On 06/06/2016 11:04, Stefano Stabellini wrote:
> >> On Tue, 31 May 2016, Shannon Zhao wrote:
> >>> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
> >>>
> >>> Add ACPI tables relevant definitions for generating ACPI tables for ARM
> >>> guest later. Currently RSDP, XSDT, GTDT, MADT, FADT and DSDT tables will
> >>> be used.
> >>>
> >>> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
> >>> ---
> >>>  tools/libxc/include/acpi_defs.h | 277
> >>> ++++++++++++++++++++++++++++++++++++++++
> >>>  1 file changed, 277 insertions(+)
> >>>  create mode 100644 tools/libxc/include/acpi_defs.h
> >>>
> >>> diff --git a/tools/libxc/include/acpi_defs.h
> >>> b/tools/libxc/include/acpi_defs.h
> >>> new file mode 100644
> >>> index 0000000..9389a96
> >>> --- /dev/null
> >>> +++ b/tools/libxc/include/acpi_defs.h
> >>> @@ -0,0 +1,277 @@
> >>> +#ifndef _ACPI_DEFS_H_
> >>> +#define _ACPI_DEFS_H_
> >>> +
> >>> +#define ACPI_BUILD_APPNAME6 "XenARM"
> >>> +#define ACPI_BUILD_APPNAME4 "Xen "
> >>
> >> This header is actually ARM specific (also see the gic stuff below). It
> >> is probably best to rename it to acpi_arm_defs.h.
> > 
> > Should not just we re-use the ACPI headers from xen/include/acpi/ ?
> So how to include those headers in tools/libxl/libxl_arm.c ?
> 

Is it public headers? If so, it might already be available in
tools/include. If not, is it feasible to be made public?

If in the end the file you need can't end up as a public header, you
need to manipulate CFLAGS. There is one example in libxc's Makefile.
Search for libelf.

But please make sure the CFLAGS doesn't get modified when it is not
necessary.  I would expect the CFLAGS is explicitly altered for a list
of files.

Wei.

> Thanks,
> -- 
> Shannon
> 

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