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Message-ID: <CAHk-=wjjiYjCp61gdAMpDOsUBU-A2hFFKJoVx5VAC7yV4K6WYg@mail.gmail.com> Date: Fri, 18 Dec 2020 09:54:45 -0800 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Jon Hunter <jonathanh@...dia.com> Cc: Marek Szyprowski <m.szyprowski@...sung.com>, Masahiro Yamada <masahiroy@...nel.org>, Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>, Kees Cook <keescook@...omium.org>, Emese Revfy <re.emese@...il.com>, linux-hardening@...r.kernel.org, Nathan Chancellor <natechancellor@...il.com>, Nick Desaulniers <ndesaulniers@...gle.com>, clang-built-linux <clang-built-linux@...glegroups.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-tegra <linux-tegra@...r.kernel.org> Subject: Re: [PATCH] gcc-plugins: simplify GCC plugin-dev capability test On Fri, Dec 18, 2020 at 7:33 AM Jon Hunter <jonathanh@...dia.com> wrote: > > However, if you are saying that this is a problem/bug with our builders, > then of course we will have to get this fixed. This seems to be a package dependency problem with the gcc plugins - they clearly want libgmp, but apparently the package hasn't specified that dependency. If this turns out to be a big problem, I guess we can't simplify the plugin check after all. We historically just disabled gcc-plugins if that header didn't build, which obviously meant that it "worked" for people, but it also means that clearly the coverage can't have been as good as it could/should be. So if it's as simple as just installing the GNU multiprecision libraries ("gmp-devel" on most rpm-based systems, "libgmp-dev" on most debian systems), then I think that's the right thing to do. You'll get a working build again, and equally importantly, your build servers will actually do a better job of covering the different build options. Linus
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