As a workaround, I was able to use update-alternatives to redirect cc to gcc, and then redirect it back to clang after I was done.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-460-server in Ubuntu. https://bugs.launchpad.net/bugs/1930452 Title: Unable to build dkms package for nvidia driver Status in nvidia-graphics-drivers-460-server package in Ubuntu: New Bug description: There seems to be a mismatch between the compiler I have installed and the compiler that the build script is expecting; my build log is full of: make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-mmap.o] Error 1 make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-i2c.o] Error 1 make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-p2p.o] Error 1 make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-pat.o] Error 1 error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option] error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option] error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option] make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-procfs.o] Error 1 make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-vm.o] Error 1 error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option] make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-usermap.o] Error 1 make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/nv-vtophys.o] Error 1 error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option] error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option] make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/os-interface.o] Error 1 make[2]: *** [scripts/Makefile.build:286: /var/lib/dkms/nvidia-srv/460.73.01/build/nvidia/os-mlock.o] Error 1 It looks like the problem may be that I have both clang and gcc installed: jshagam@feldspar:~$ gcc --version gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0 Copyright (C) 2019 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. jshagam@feldspar:~$ cc --version clang version 10.0.0-4ubuntu1 Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin The nvidia-dkms Makefile should probably be fixed to use gcc instead of cc, since these appear to be gcc-specific compiler flags. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: nvidia-dkms-460-server 460.73.01-0ubuntu0.20.04.1 ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-50-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 CasperMD5CheckResult: skip Date: Tue Jun 1 10:40:04 2021 InstallationDate: Installed on 2021-03-25 (67 days ago) InstallationMedia: Kubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: nvidia-graphics-drivers-460-server UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-460-server/+bug/1930452/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
