[PATCH v1 1/1] Makefile.lib: Always rebuild DSDT

[Simon Glass]

Hi,

On Wed, 29 Nov 2023 at 10:17, Heinrich Schuchardt
<heinrich.schuchardt at canonical.com> wrote:
>
> On 20.10.21 14:37, Andy Shevchenko wrote:
> > The dsdt.asl is usually combined out of several files that are included
> > in the main one. Whenever we change the content of any of such files,
> > build system is not able to recognize them. Hence the easiest way is to
> > force DSDT rebuild each time we run make.
> >
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
>
> The build process that you describe is not in our documentation.
>
> By which defconfig is $(src)/dsdt.asl consumed? Where does it come from?
> Please, provide a reproducible example.
>
> Would you be able to provide a documentation patch explaining how to use
> a user provided dsdt.asl file?
>
> Best regards
>
> Heinrich
>
>
> > ---
> >   scripts/Makefile.lib | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> > index 07696e86bb54..8c3c893b398a 100644
> > --- a/scripts/Makefile.lib
> > +++ b/scripts/Makefile.lib
> > @@ -441,7 +441,7 @@ cmd_acpi_c_asl=         \
> >       iasl -p $@ -tc $(ASL_TMP) $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
> >       mv $(patsubst %.c,%.hex,$@) $@
> >
> > -$(obj)/dsdt.c:    $(src)/dsdt.asl
> > +$(obj)/dsdt.c:    $(src)/dsdt.asl FORCE
> >       $(call cmd,acpi_c_asl)
> >       $(Q)sed -i -e "s,dsdt_aml_code,AmlCode," $@
> >
>

I agree that this patch is better than having the bug. But yes the
docs could really use some notes here, for the person who does come
along and clean up the dependency bug.

Regards,
Simon