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([2a02:a212:a204:1980:81c8:ede2:c428:1eac]) by smtp.gmail.com with ESMTPSA id e8sm10945981edq.77.2021.03.16.10.00.29 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Mar 2021 10:00:29 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.21\)) Subject: Re: Build system can't detect rustc From: Kaviraj Kanagaraj In-Reply-To: Date: Tue, 16 Mar 2021 18:00:28 +0100 Cc: Sumera Priyadarsini , rust-for-linux@vger.kernel.org Content-Transfer-Encoding: quoted-printable Message-Id: <39D26FFA-1635-483F-A43F-3BCF942D0AF8@gmail.com> References: <20210315063044.ur3lvxv7emo2egu4@adolin> To: Miguel Ojeda X-Mailer: Apple Mail (2.3654.60.0.2.21) Precedence: bulk List-ID: X-Mailing-List: rust-for-linux@vger.kernel.org HI I had similar issue even with LLVM=3D1 or CC=3Dclang enabled. [kaviraj@kavi-desktop-manjaro linux-rs]$ export LLVM=3D1 [kaviraj@kavi-desktop-manjaro linux-rs]$ make CALL scripts/checksyscalls.sh CALL scripts/atomic/check-atomics.sh DESCEND objtool CHK include/generated/compile.h GEN .version CHK include/generated/compile.h UPD include/generated/compile.h CC init/version.o AR init/built-in.a LD vmlinux.o MODPOST vmlinux.symvers MODINFO modules.builtin.modinfo GEN modules.builtin LD .tmp_vmlinux.kallsyms1 ld.lld: error: Unexpected GOT entries detected! ld.lld: error: Unexpected GOT entries detected! ld.lld: error: Unexpected GOT entries detected! make: *** [Makefile:1274: vmlinux] Error 1 The thing that worked for me is to cp = .github/workflows/kernel-x86_64-release.config .config and build again. Although it would be nice to find out what is causing this when we = generate config from make menuconfig (even after following the = Quickstart guide) Thanks Kaviraj > On 16 Mar 2021, at 16:09, Miguel Ojeda = wrote: >=20 > On Tue, Mar 16, 2021 at 3:10 PM Sumera Priyadarsini > wrote: >>=20 >> Hi Miguel, >>=20 >> This definitely helped- I was using the master branch earlier. Can I >> make a PR to add this to the documentation on rust/quick-start page? >=20 > I didn't put it there since, if we manage to get this mainlined, then > we would be in the master branch already. :-) >=20 > However, you can send the PR to add a line to the `README.md` file, > which is only intended for GitHub! >=20 >> gcc versions 8 /9 / 10 but the error persists. I am not sure how to >> proceed here :/ >=20 > This happens when bindgen (which uses Clang internally) gets GCC > parameters, but that should not happen and is a bug when it does. > Which kernel config are you using? defconfig for x86_64? >=20 > To progress, please try a Clang build (pass CC=3Dclang or LLVM=3D1 to > make), which is much more likely to work (GCC builds rely on a hack to > make bindgen work), or use one of the kernel configs inside > .github/workflows/ which are known to build since we check them in the > CI. >=20 > HTH, >=20 > Cheers, > Miguel