Re: [PATCH v3 1/2] scripts/kernel-doc.py: don't create *.pyc files

[Mauro Carvalho Chehab <mchehab+huawei@kernel.org>]

Em Wed, 16 Apr 2025 17:29:01 +0800
Mauro Carvalho Chehab <mchehab+huawei@kernel.org> escreveu:

> Em Wed, 16 Apr 2025 17:19:17 +0800
> Mauro Carvalho Chehab <mchehab+huawei@kernel.org> escreveu:
> 
> > Em Wed, 16 Apr 2025 11:34:16 +0300
> > Jani Nikula <jani.nikula@linux.intel.com> escreveu:
> > 
> > > On Wed, 16 Apr 2025, Mauro Carvalho Chehab <mchehab+huawei@kernel.org> wrote:
> > > > As reported by Andy, kernel-doc.py is creating a __pycache__
> > > > directory at build time.
> > > >
> > > > Disable creation of __pycache__ for the libraries used by
> > > > kernel-doc.py, when excecuted via the build system or via
> > > > scripts/find-unused-docs.sh.
> > > >
> > > > Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com>
> > > > Closes: https://lore.kernel.org/linux-doc/Z_zYXAJcTD-c3xTe@black.fi.intel.com/
> > > > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> > > > ---
> > > >  drivers/gpu/drm/Makefile      | 2 +-
> > > >  drivers/gpu/drm/i915/Makefile | 2 +-
> > > >  include/drm/Makefile          | 2 +-
> > > >  scripts/Makefile.build        | 2 +-
> > > >  scripts/find-unused-docs.sh   | 2 +-
> > > >  5 files changed, 5 insertions(+), 5 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> > > > index ed54a546bbe2..d21d0cd2c752 100644
> > > > --- a/drivers/gpu/drm/Makefile
> > > > +++ b/drivers/gpu/drm/Makefile
> > > > @@ -236,7 +236,7 @@ always-$(CONFIG_DRM_HEADER_TEST) += \
> > > >  quiet_cmd_hdrtest = HDRTEST $(patsubst %.hdrtest,%.h,$@)
> > > >        cmd_hdrtest = \
> > > >  		$(CC) $(c_flags) -fsyntax-only -x c /dev/null -include $< -include $<; \
> > > > -		$(srctree)/scripts/kernel-doc -none $(if $(CONFIG_WERROR)$(CONFIG_DRM_WERROR),-Werror) $<; \
> > > > +		 PYTHONDONTWRITEBYTECODE=1 $(KERNELDOC) -none $(if $(CONFIG_WERROR)$(CONFIG_DRM_WERROR),-Werror) $<; \  
> > > 
> > > KERNELDOC is not set here.
> > 
> > > 
> > > /bin/sh: 1: -none: not found
> > 
> > Weird. This is set on Documentation/Makefile:
> > 
> > 	$ grep KERNELDOC Documentation/Makefile 
> > 	KERNELDOC       = $(srctree)/scripts/kernel-doc.py
> > 	...
> > 
> > drivers/gpu/drm/Makefile should be able to see this variable there...
> 
> I suspect that the building system tries to confine variables to
> sub-directories, so maybe one solution would be to move it to the
> main makefile.
> 
> could you please check if this patch solves the issue?

Answering myself: it doesn't.

Heh, trying to quickly write a patch before calling it a day is
usually not a good idea ;-)

I'll send a fix tomorrow.

Regards,
Mauro