linux-kernel - Re: [PATCH 06/12] selinux/genheaders: include bitsperlong and posix

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Message-ID: <CAK7LNAQ21o+cQQaLD1xkwSX0ma8hvB29DMDquy5VjHcBWwhGPw@mail.gmail.com>
Date: Thu, 8 Aug 2024 00:44:22 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Nicolas Schier <nicolas@...sle.eu>
Cc: da.gomez@...sung.com, Nathan Chancellor <nathan@...nel.org>, 
	Lucas De Marchi <lucas.demarchi@...el.com>, 
	Thomas Hellström <thomas.hellstrom@...ux.intel.com>, 
	Rodrigo Vivi <rodrigo.vivi@...el.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	William Hubbs <w.d.hubbs@...il.com>, Chris Brannon <chris@...-brannons.com>, 
	Kirk Reiser <kirk@...sers.ca>, Samuel Thibault <samuel.thibault@...-lyon.org>, 
	Paul Moore <paul@...l-moore.com>, Stephen Smalley <stephen.smalley.work@...il.com>, 
	Ondrej Mosnacek <omosnace@...hat.com>, Catalin Marinas <catalin.marinas@....com>, 
	Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
	James Morse <james.morse@....com>, Suzuki K Poulose <suzuki.poulose@....com>, 
	Zenghui Yu <yuzenghui@...wei.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Jiri Slaby <jirislaby@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, 
	Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, linux-kernel@...r.kernel.org, 
	linux-kbuild@...r.kernel.org, intel-xe@...ts.freedesktop.org, 
	dri-devel@...ts.freedesktop.org, speakup@...ux-speakup.org, 
	selinux@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	kvmarm@...ts.linux.dev, linux-serial@...r.kernel.org, llvm@...ts.linux.dev, 
	Finn Behrens <me@...enk.dev>, "Daniel Gomez (Samsung)" <d+samsung@...ces.com>, gost.dev@...sung.com
Subject: Re: [PATCH 06/12] selinux/genheaders: include bitsperlong and
 posix_types headers

On Thu, Aug 8, 2024 at 12:39 AM Nicolas Schier <nicolas@...sle.eu> wrote:
>
> On Wed, Aug 07, 2024 at 01:09:20AM +0200, Daniel Gomez via B4 Relay wrote:
> > From: Daniel Gomez <da.gomez@...sung.com>
> >
> > The genheaders requires the bitsperlong.h and posix_types.h headers.
> > To ensure these headers are found during compilation on macOS hosts,
> > add usr/include to HOST_EXTRACFLAGS in the genheaders Makefile. This
> > adjustment allows the compiler to locate all necessary headers when they
> > are not available by default on macOS.
> >
> > Signed-off-by: Daniel Gomez <da.gomez@...sung.com>
> > ---
> >  scripts/selinux/genheaders/Makefile | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/scripts/selinux/genheaders/Makefile b/scripts/selinux/genheaders/Makefile
> > index 1faf7f07e8db..017149c90f8e 100644
> > --- a/scripts/selinux/genheaders/Makefile
> > +++ b/scripts/selinux/genheaders/Makefile
> > @@ -2,4 +2,5 @@
> >  hostprogs-always-y += genheaders
> >  HOST_EXTRACFLAGS += \
> >       -I$(srctree)/include/uapi -I$(srctree)/include \
> > -     -I$(srctree)/security/selinux/include
> > +     -I$(srctree)/security/selinux/include \
> > +     -I$(srctree)/usr/include
>
> 'make headers' composes the UAPI header tree in $(objtree)/usr/include.
> So, if you build out-of-source, -I$(srctree)/usr/include will not match.
> Just remove the '$(srctree)/' prefix as '$(objtree)/' is always '.'.


Right.


> But I am suspecting that this break cross-building.


Right.

We cannot do this.


--
Best Regards
Masahiro Yamada