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charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: TYAPR01MB6252.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: a84f8242-557a-41e6-b79c-08d9c485082f X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Dec 2021 13:23:09.6049 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f109924e-fb71-4ba0-b2cc-65dcdf6fbe4f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: a4GJ3+zP1NkbDj1BN4WwA3koehYrsltlmliizFTXODH0Xks92uUnRFv//e/u3KIjhFC0JZQ7BIHy0mtJBDVokA4qhInQtmbjZiOXkC3+IDVxPNsnZMg4YCJIVwDdA510 X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYAPR01MB4318 X-OriginatorOrg: toshiba.co.jp MSSCP.TransferMailToMossAgent: 103 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Tue, 21 Dec 2021 13:23:25 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/7222 Hi,=0A= =0A= > We should do what our users are likely to do... they want stable=0A= > kernel, and will not update toolchain in middle of product=0A= > maintainance. [Updating toolchain when starting new product with given=0A= > -cip kernel is more likely].=0A= > =0A= > I believe that means we should stick to specific version, but I'm not=0A= > sure what version it is. We support Debian distro, likely gcc version=0A= > from that distro would be a good option? Perhaps we should ask on TSC=0A= > meeting tommorow?=0A= =0A= Yes, we recommend using GCC with the rootfs environment.=0A= And weare using the same container at compile time.=0A= =0A= > =0A= > 5.10 kernel was released in Dec 2020. At that time, gcc 8 and 9 were=0A= > maintained, and gcc 10 was new (https://gcc.gnu.org/releases.html).=0A= > =0A= > To get some results for -stable testing, easiest options might be to=0A= > disable gcc plugin support in Kconfig.=0A= =0A= +1.=0A= Also, I think that this will not be necessary by preparing a build containe= r=0A= that matches the kernel.=0A= =0A= Best regards,=0A= Nobuhiro=0A= ________________________________________=0A= =1B$B:9=3DP?M=1B(B: cip-dev@lists.cip-project.org =1B$B$,=1B(B Pavel Machek =1B$B$NBeM}$GAw?.=1B(B=0A= =1B$BAw?.F|;~=1B(B: 2021=1B$BG/=1B(B12=1B$B7n=1B(B20=1B$BF|=1B(B 18:58=0A= =1B$B08@h=1B(B: Chris Paterson=0A= CC: Pavel Machek; cip-dev@lists.cip-project.org=0A= =1B$B7oL>=1B(B: Re: [cip-dev] 5.10.85 breaks CIP testing Re: [PATCH 5.10 00= /33] 5.10.86-rc1 review=0A= =0A= Hi!=0A= =0A= > > > I believe we should not change build requirements in the middle of=0A= > > > stable series.=0A= > > >=0A= > > > To our testing team: 5.10.85 introduced new requirements for the=0A= > > > build. gmp.h is now required in our configs, and maybe something else= .=0A= >=0A= > Hi Pavel, sorry for missing this email before now.=0A= > I can look into supporting this, depending on the answers to the comments= below...=0A= =0A= Thank you.=0A= =0A= > > > Easiest fix might be to add=0A= > > >=0A= > > > # CONFIG_GCC_PLUGINS is not set=0A= > > >=0A= > > > to our configs. Alternatively I know which patch to revert.=0A= > > >=0A= > > > But I believe -stable should be the one doing the revert, as the patc= h=0A= > > > does not fix serious bug and introduces problem. Faster compile is=0A= > > > nice but let mainline have those kind of changes.=0A= > >=0A= > > But that commit is needed to get gcc11 plugins to work with the 5.10.y= =0A= > > kernel tree. So either we "break" it for old and obsolete gcc versions= =0A= > > (i.e. gcc7), or newer supported versions break.=0A= >=0A= > Well this leads us to an interesting point.=0A= > At the moment we use GCC v8.1.0 for building all of our kernel trees (cip= & stable).=0A= > What does CIP want to do mid/long term? Keep upgrading the version we use= ? Or try and support a specific version of GCC for 10 years?=0A= > If the former, when do we want to upgrade?=0A= > If the latter, which version?=0A= >=0A= =0A= We should do what our users are likely to do... they want stable=0A= kernel, and will not update toolchain in middle of product=0A= maintainance. [Updating toolchain when starting new product with given=0A= -cip kernel is more likely].=0A= =0A= I believe that means we should stick to specific version, but I'm not=0A= sure what version it is. We support Debian distro, likely gcc version=0A= from that distro would be a good option? Perhaps we should ask on TSC=0A= meeting tommorow?=0A= =0A= 5.10 kernel was released in Dec 2020. At that time, gcc 8 and 9 were=0A= maintained, and gcc 10 was new (https://gcc.gnu.org/releases.html).=0A= =0A= To get some results for -stable testing, easiest options might be to=0A= disable gcc plugin support in Kconfig.=0A= =0A= Best regards,=0A= Pavel=0A= --=0A= DENX Software Engineering GmbH, Managing Director: Wolfgang Denk=0A= HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany=0A=