Re: [yocto] dunfell gcc-sanitizers-arm-8.3 fails to build

From: "Sumit Garg" <sumit.garg@linaro.org>
To: Sumit Garg <sumit.garg@linaro.org>
Cc: Ryan Harkin <ryan.harkin@linaro.org>,
	Khem Raj <raj.khem@gmail.com>,
	 yocto@lists.yoctoproject.org,
	Ralph Siemsen <ralph.siemsen@linaro.org>,
	 Jon Mason <Jon.Mason@arm.com>,
	Nicolas Dechesne <nicolas.dechesne@linaro.org>,
	 openembedded <openembedded@lists.linaro.org>
Subject: Re: [yocto] dunfell gcc-sanitizers-arm-8.3 fails to build
Date: Sat, 1 Aug 2020 19:49:13 +0530	[thread overview]
Message-ID: <CAFA6WYMkfqNRvd51Mmi=2wZNGwz0Xi7Y_Uhy4BhS4kDnvkoyRw@mail.gmail.com> (raw)
In-Reply-To: <16272A3CFA65FC0B.22952@lists.yoctoproject.org>

On Sat, 1 Aug 2020 at 19:40, Sumit Garg via lists.yoctoproject.org
<sumit.garg=linaro.org@lists.yoctoproject.org> wrote:
>
> On Sat, 1 Aug 2020 at 14:57, Ryan Harkin <ryan.harkin@linaro.org> wrote:
> >
> >
> >
> > On Sat, 1 Aug 2020 at 10:09, Ryan Harkin <ryan.harkin@linaro.org> wrote:
> >>
> >> Hi Khem,
> >>
> >> On Fri, 31 Jul 2020, 21:58 Khem Raj, <raj.khem@gmail.com> wrote:
> >>>
> >>> On Fri, Jul 31, 2020 at 8:35 AM Ryan Harkin <ryan.harkin@linaro.org> wrote:
> >>> >
> >>> > Hello,
> >>> >
> >>> > I'm migrating from Warrior to Dunfell and I'm getting a curious build failure in gcc-sanitizers.
> >>> >
> >>> > Here's the full gory detail:
> >>> >     https://pastebin.ubuntu.com/p/nh4cDKMvgS/
> >>> >
> >>> > However, the main error is this:
> >>> >
> >>> > | In file included from ../../../../../../../../../work-shared/gcc-arm-8.3-r2019.03/git/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:193:
> >>> > | ../../../../../../../../../work-shared/gcc-arm-8.3-r2019.03/git/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:317:72: error: size of array 'assertion_failed__1152' is negative
> >>> > |      typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1]
> >>> >
> >>> > I have no idea where to begin with this. I don't even know why gcc-sanitizers is included in the build, what it does, or why I need it. I'm building an image with dev packages and gcc, so I guess that's why.
> >>> >
> >>> > I've hacked meta-arm to patch sanitizer_platform_limits_posix.cc to null out the macros and that builds fine. I'm sure it won't work, should someone want to use it, mind you.
> >>> >
> >>> > Is there something obvious that I should be doing as part of a Warrior -> Dunfell migration to get this to work?
> >>> >
> >>> > note: Warrior used meta-linaro-toolchain and for Dunfell, it's moved to meta-arm-toolchain.
> >>> >
> >>>
> >>> is gcc 8.3 the latest for linaro
> >>
> >>
> >> I assume so. I haven't attempted to change the default.
> >
> >
> > I'm sorry, that's incorrect: local.conf has an over-ride to specify 8.3.
> > I've just removed it and now it's using 9.3. And it's building fine.
> >

It's using GCC 9.3 from OE core. If you wish to use Arm toolchain then
you need to override the default OE core GCC version with Arm
toolchain GCC version:

GCCVERSION = "arm-9.2"

-Sumit

> > Sumit, do you know if there's a reason for using 9.2 in RPB instead of 9.3?
> >
>
> Arm GCC 9.3 toolchain isn't released yet (see here [1]).
>
> [1] https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads
>
> -Sumit
>
> >>
> >>>
> >>> > Regards,
> >>> > Ryan.
> >>> >
> 