On Mon, Feb 22, 2021 at 5:08 PM Naresh Kamboju <naresh.kamb...@linaro.org> wrote: > > While building i386 configs on stable-rc 5.10, stable-rc 5.11 branch > and mainline > with clang-12 these following warnings and errors were noticed. >
Hi Naresh, Please see commit bb73d07148c405c293e576b40af37737faf23a6a ("x86/build: Treat R_386_PLT32 relocation as R_386_PC32"). Recently accepted into Linus Git tree. [1] says: Further info for the more interested: https://github.com/ClangBuiltLinux/linux/issues/1210 https://sourceware.org/bugzilla/show_bug.cgi?id=27169 https://github.com/llvm/llvm-project/commit/a084c0388e2a59b9556f2de0083333232da3f1d6 Hope that helps. - Sedat - [1] https://git.kernel.org/linus/bb73d07148c405c293e576b40af37737faf23a6a > make --silent --keep-going --jobs=8 > O=/home/tuxbuild/.cache/tuxmake/builds/1/tmp ARCH=i386 > CROSS_COMPILE=i686-linux-gnu- 'HOSTCC=sccache clang' 'CC=sccache > clang' > > drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:2586:9: warning: shift > count >= width of type [-Wshift-count-overflow] > > return hweight64(VDBOX_MASK(&i915->gt)); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from > macro 'hweight64' > #define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : > __arch_hweight64(w)) > ^~~~~~~~~~~~~~~~~~~~ > include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from > macro '__const_hweight64' > #define __const_hweight64(w) (__const_hweight32(w) + > __const_hweight32((w) >> 32)) > ^ > ~~ > include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from > macro '__const_hweight32' > #define __const_hweight32(w) (__const_hweight16(w) + > __const_hweight16((w) >> 16)) > ^ > include/asm-generic/bitops/const_hweight.h:19:48: note: expanded from > macro '__const_hweight16' > #define __const_hweight16(w) (__const_hweight8(w) + > __const_hweight8((w) >> 8 )) > ^ > include/asm-generic/bitops/const_hweight.h:10:9: note: expanded from > macro '__const_hweight8' > ((!!((w) & (1ULL << 0))) + \ > ^ > drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:2586:9: warning: shift > count >= width of type [-Wshift-count-overflow] > return hweight64(VDBOX_MASK(&i915->gt)); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > <trim> > > 32 warnings generated. > Unsupported relocation type: R_386_PLT32 (4) > make[3]: *** [arch/x86/boot/compressed/Makefile:116: > arch/x86/boot/compressed/vmlinux.relocs] Error 1 > make[3]: *** Deleting file 'arch/x86/boot/compressed/vmlinux.relocs' > make[3]: Target 'arch/x86/boot/compressed/vmlinux' not remade because of > errors. > > Reported-by: Naresh Kamboju <naresh.kamb...@linaro.org> > > Steps to reproduce: > --------------------------- > # TuxMake is a command line tool and Python library that provides > # portable and repeatable Linux kernel builds across a variety of > # architectures, toolchains, kernel configurations, and make targets. > # > # TuxMake supports the concept of runtimes. > # See https://docs.tuxmake.org/runtimes/, for that to work it requires > # that you install podman or docker on your system. > # > # To install tuxmake on your system globally: > # sudo pip3 install -U tuxmake > # > # See https://docs.tuxmake.org/ for complete documentation. > > tuxmake --runtime podman --target-arch i386 --toolchain clang-12 > --kconfig defconfig --kconfig-add > https://builds.tuxbuild.com/1opxSKxZuRowPsiOsSJ0IoUOXOt/config > > -- > Linaro LKFT > https://lkft.linaro.org > > -- > You received this message because you are subscribed to the Google Groups > "Clang Built Linux" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clang-built-linux+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/clang-built-linux/CA%2BG9fYtNOZ-G_RTq_Uedy-7wkFog2q%2BOWNbWd--eL%2Bi2-OQ7NA%40mail.gmail.com.