Date: Tue, 12 Apr 2016 12:46:36 -0700 From: Kees Cook <keescook@...omium.org> To: David Brown <david.brown@...aro.org>, Jeff Law <law@...hat.com> Cc: Emese Revfy <re.emese@...il.com>, Masahiro Yamada <yamada.masahiro@...ionext.com>, Michal Marek <mmarek@...e.com>, linux-kbuild <linux-kbuild@...r.kernel.org>, PaX Team <pageexec@...email.hu>, Brad Spengler <spender@...ecurity.net>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, Rasmus Villemoes <linux@...musvillemoes.dk>, Fengguang Wu <fengguang.wu@...el.com>, Dmitry Vyukov <dvyukov@...gle.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v6 0/6] Introduce GCC plugin infrastructure On Tue, Apr 12, 2016 at 11:41 AM, David Brown <david.brown@...aro.org> wrote: > On Tue, Apr 12, 2016 at 11:27:52AM -0700, Kees Cook wrote: > >> Awesome! Thanks for testing this. I still need to finish getting my >> arm64 environment built... > > > I've been using: > http://releases.linaro.org/components/toolchain/binaries/ > > for most stuff. > >> Do you happen to know if there's already a gcc bug open for the make >> install problem? > > > Linaro toolchain bug: > https://bugs.linaro.org/show_bug.cgi?id=2123 > > Patch to fix it > https://gcc.gnu.org/ml/gcc-patches/2016-03/msg00522.html > > It is supposed to be included in the linaro 5.3-2016.03 snapshot. > I've pinged Christophe to see if I can get any insight into when that > will be available. Looks like it's in the upstream tree: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=bfe972081c3c75019fa5a6e883dcbeb5e03eea18 I'm not sure how GCC does bug fix releases. Is this going to be in 5.4 or 5.3.1? (Is there such a thing as 5.3.1 planned?) I've CCed Jeff in case he's got a moment to peek at this. > It is kind of nice to see that when it fails, it prints a helpful > message, though: > > scripts/Makefile.gcc-plugins:22: *** error, your gcc installation does not > support plugins, perhaps the necessary headers are missing?. Stop. > > I think it is OK to include this, even with the patches still bubbling > through gcc releases. It prints a helpful message when it doesn't > work, and is only going to be selected if specifically requested. Yeah, absolutely. It works on the other architectures, and will soon work on arm64 too. -Kees -- Kees Cook Chrome OS & Brillo Security
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