diff mbox series

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

Message ID 20211020123742.31098-1-andriy.shevchenko@linux.intel.com
State Not Applicable, archived
Delegated to: Heinrich Schuchardt
Headers show
Series [v1,1/1] Makefile.lib: Always rebuild DSDT | expand

Commit Message

Andy Shevchenko Oct. 20, 2021, 12:37 p.m. UTC
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@linux.intel.com>
---
 scripts/Makefile.lib | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Simon Glass Oct. 24, 2021, 7:53 p.m. UTC | #1
Hi Andy,

On Wed, 20 Oct 2021 at 06:37, Andy Shevchenko
<andriy.shevchenko@linux.intel.com> 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@linux.intel.com>
> ---
>  scripts/Makefile.lib | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Ick. Since it uses #include, doesn't the dependency generation work with this?

>
> 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," $@
>
> --
> 2.33.0
>

Regards,
Simon
Andy Shevchenko Oct. 25, 2021, 7:33 a.m. UTC | #2
On Sun, Oct 24, 2021 at 11:00 PM Simon Glass <sjg@chromium.org> wrote:
> On Wed, 20 Oct 2021 at 06:37, Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> 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.

> Ick. Since it uses #include, doesn't the dependency generation work with this?

How?
Simon Glass Oct. 25, 2021, 3:18 p.m. UTC | #3
Hi Andy,

On Mon, 25 Oct 2021 at 01:34, Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
>
> On Sun, Oct 24, 2021 at 11:00 PM Simon Glass <sjg@chromium.org> wrote:
> > On Wed, 20 Oct 2021 at 06:37, Andy Shevchenko
> > <andriy.shevchenko@linux.intel.com> 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.
>
> > Ick. Since it uses #include, doesn't the dependency generation work with this?
>
> How?

If you do a sandbox build you will see this file:

arch/sandbox/dts/.sandbox.dtb.cmd

It contains the dependencies used to compile the device tree. Can we
use the same mechanism? There is a .cmd file for the dsdt file but it
does not seem to have the correct contents.

Regards,
Simon
Andy Shevchenko Oct. 25, 2021, 6:52 p.m. UTC | #4
On Mon, Oct 25, 2021 at 09:18:56AM -0600, Simon Glass wrote:
> On Mon, 25 Oct 2021 at 01:34, Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> > On Sun, Oct 24, 2021 at 11:00 PM Simon Glass <sjg@chromium.org> wrote:
> > > On Wed, 20 Oct 2021 at 06:37, Andy Shevchenko
> > > <andriy.shevchenko@linux.intel.com> 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.
> >
> > > Ick. Since it uses #include, doesn't the dependency generation work with this?
> >
> > How?
> 
> If you do a sandbox build you will see this file:
> 
> arch/sandbox/dts/.sandbox.dtb.cmd
> 
> It contains the dependencies used to compile the device tree. Can we
> use the same mechanism? There is a .cmd file for the dsdt file but it
> does not seem to have the correct contents.

A spent more than couple of hours to fight with `make` and failed.
Maybe you can improve the below (it still rebuilds always)

From 2fa93fdc376b60c69ff1a2e9ffd16d30702c6399 Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Wed, 20 Oct 2021 15:21:49 +0300
Subject: [PATCH 1/1] Makefile.lib: Always rebuild DSDT

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@linux.intel.com>
---
 scripts/Makefile.lib | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index ac270844c2e1..939f99dee9f9 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -432,16 +432,21 @@ CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
 # renamed to dsdt.c for consumption by the build system.
 ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
 
+asl_cpp_flags  = -Wp,-MD,$(depfile) -nostdinc                   \
+		 $(UBOOTINCLUDE)                                \
+		 -I$(srctree)/include                           \
+		 -D__ASSEMBLY__                                 \
+		 -undef -D__ACPI__
+
 quiet_cmd_acpi_c_asl= ASL     $<
 cmd_acpi_c_asl=         \
-	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
-		-P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
+	$(HOSTCC) -P -E $(asl_cpp_flags) -x assembler-with-cpp -o $(ASL_TMP) $< && \
 	iasl -p $@ -tc $(ASL_TMP) $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
-	mv $(patsubst %.c,%.hex,$@) $@
+	mv $(patsubst %.c,%.hex,$@) $@ && \
+	sed -i -e "s,dsdt_aml_code,AmlCode," $@
 
-$(obj)/dsdt.c:    $(src)/dsdt.asl
-	$(call cmd,acpi_c_asl)
-	$(Q)sed -i -e "s,dsdt_aml_code,AmlCode," $@
+$(obj)/dsdt.c:    $(src)/dsdt.asl FORCE
+	$(call if_changed_dep,acpi_c_asl)
 
 # Bzip2
 # ---------------------------------------------------------------------------
Andy Shevchenko March 30, 2022, 9:21 a.m. UTC | #5
On Mon, Oct 25, 2021 at 09:52:45PM +0300, Andy Shevchenko wrote:
> On Mon, Oct 25, 2021 at 09:18:56AM -0600, Simon Glass wrote:
> > On Mon, 25 Oct 2021 at 01:34, Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> > > On Sun, Oct 24, 2021 at 11:00 PM Simon Glass <sjg@chromium.org> wrote:
> > > > On Wed, 20 Oct 2021 at 06:37, Andy Shevchenko
> > > > <andriy.shevchenko@linux.intel.com> 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.
> > >
> > > > Ick. Since it uses #include, doesn't the dependency generation work with this?
> > >
> > > How?
> > 
> > If you do a sandbox build you will see this file:
> > 
> > arch/sandbox/dts/.sandbox.dtb.cmd
> > 
> > It contains the dependencies used to compile the device tree. Can we
> > use the same mechanism? There is a .cmd file for the dsdt file but it
> > does not seem to have the correct contents.
> 
> A spent more than couple of hours to fight with `make` and failed.
> Maybe you can improve the below (it still rebuilds always)

So, can we fix this annoying bug, please?
Andy Shevchenko Nov. 29, 2023, 10:07 a.m. UTC | #6
On Wed, Mar 30, 2022 at 12:21:25PM +0300, Andy Shevchenko wrote:
> On Mon, Oct 25, 2021 at 09:52:45PM +0300, Andy Shevchenko wrote:
> > On Mon, Oct 25, 2021 at 09:18:56AM -0600, Simon Glass wrote:
> > > On Mon, 25 Oct 2021 at 01:34, Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> > > > On Sun, Oct 24, 2021 at 11:00 PM Simon Glass <sjg@chromium.org> wrote:
> > > > > On Wed, 20 Oct 2021 at 06:37, Andy Shevchenko
> > > > > <andriy.shevchenko@linux.intel.com> 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.
> > > >
> > > > > Ick. Since it uses #include, doesn't the dependency generation work with this?
> > > >
> > > > How?
> > > 
> > > If you do a sandbox build you will see this file:
> > > 
> > > arch/sandbox/dts/.sandbox.dtb.cmd
> > > 
> > > It contains the dependencies used to compile the device tree. Can we
> > > use the same mechanism? There is a .cmd file for the dsdt file but it
> > > does not seem to have the correct contents.
> > 
> > A spent more than couple of hours to fight with `make` and failed.
> > Maybe you can improve the below (it still rebuilds always)
> 
> So, can we fix this annoying bug, please?

Any news here? If no other solution, please apply this patch.
Heinrich Schuchardt Nov. 29, 2023, 5:16 p.m. UTC | #7
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@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," $@
>
Simon Glass Nov. 30, 2023, 2:45 a.m. UTC | #8
Hi,

On Wed, 29 Nov 2023 at 10:17, Heinrich Schuchardt
<heinrich.schuchardt@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@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
Heinrich Schuchardt Dec. 9, 2023, 2:39 p.m. UTC | #9
On 11/30/23 03:45, Simon Glass wrote:
> Hi,
>
> On Wed, 29 Nov 2023 at 10:17, Heinrich Schuchardt
> <heinrich.schuchardt@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@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

The patch is neither applicable to origin/next nor to origin/master.

I only find a line

$(obj)/dsdt_generated.c:    $(src)/dsdt.asl

Best regards

Heinrich
diff mbox series

Patch

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," $@