From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Maciej W. Rozycki" Subject: Re: [RFC] minimum gcc version for kernel: raise to gcc-4.3 or 4.6? Date: Sat, 22 Apr 2017 04:10:08 +0100 (BST) Message-ID: References: <20161216105634.235457-1-arnd@arndb.de> <3302470.IDcDrWa0u6@wuerfel> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: Sender: linux-kbuild-owner@vger.kernel.org To: Kees Cook Cc: Arnd Bergmann , linux-arch , linux-kbuild , LKML , "linux-arm-kernel@lists.infradead.org" , Russell King , Andrew Morton , kernel-build-reports@lists.linaro.org, kvmarm@lists.cs.columbia.edu List-Id: kvmarm@lists.cs.columbia.edu On Fri, 21 Apr 2017, Kees Cook wrote: > > The linux-4.2 x86 defconfig could still be built with gcc-4.0, but > > later kernels have several minor problems with that, and > > require at least gcc-4.3. > > > > If we are ok with this status quo, we could simply declare gcc-4.3 > > the absolute minimum version for the kernel, make gcc-4.9 > > the recommeded minimum version, and remove all workarounds > > for gcc-4.2 or older. > > I think starting with this would be a good first step. I'm not sure > the best way to add "recommended minimum" to > Documentation/process/changes.rst hmmm FWIW for some reasons (mainly the ability to avoid NPTL) I have stuck to GCC 4.1.2 with some MIPS configurations and I've had no issues with that compiler up to Linux 4.6.0, which is the last kernel version I have tried with that compiler so far. I could check if anything has regressed since then I suppose. Maciej