On Sat, Aug 14, 2021 at 4:02 AM Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote: > > On Wed, 11 Aug 2021 at 02:12, Nick Desaulniers <ndesaulniers@xxxxxxxxxx> wrote: > > > > cc-option, cc-option-yn, and cc-disable-warning all invoke the compiler > > during build time, and can slow down the build when these checks become > > stale for our supported compilers, whose minimally supported versions > > increases over time. See Documentation/process/changes.rst for the > > current supported minimal versions (GCC 4.9+, clang 10.0.1+). Compiler > > version support for these flags may be verified on godbolt.org. > > > > The following flags are GCC only and supported since at least GCC 4.9. > > Remove cc-option and cc-disable-warning tests. > > * -fno-tree-loop-im > > * -Wno-maybe-uninitialized > > * -fno-reorder-blocks > > * -fno-ipa-cp-clone > > * -fno-partial-inlining > > * -femit-struct-debug-baseonly > > * -fno-inline-functions-called-once > > * -fconserve-stack > > > > The following flags are supported by all supported versions of GCC and > > Clang. Remove their cc-option, cc-option-yn, and cc-disable-warning tests. > > * -fno-delete-null-pointer-checks > > * -fno-var-tracking > > * -mfentry > > * -Wno-array-bounds > > > > The following configs are made dependent on GCC, since they use GCC > > specific flags. > > * READABLE_ASM > > * DEBUG_SECTION_MISMATCH > > > > --param=allow-store-data-races=0 was renamed to --allow-store-data-races > > in the GCC 10 release. > > [Please ignore this if it is already reported] > > Linux next 20210813 tag s390 build failed with gcc-8 but pass with > gcc-9 and gcc-10. > > s390 (defconfig) with gcc-8 FAILED > s390 (defconfig) with gcc-9 PASS > s390 (defconfig) with gcc-10 PASS Thanks for the report. Andrew has dropped the patch from mm-next. Looks like it's too soon to remove build configuration tests for -mfentry. > > Build error: > ----------- > s390x-linux-gnu-gcc: error: unrecognized command line option > '-mfentry'; did you mean '--entry'? > make[2]: *** [/builds/linux/scripts/Makefile.build:272: > scripts/mod/empty.o] Error 1 > s390x-linux-gnu-gcc: error: unrecognized command line option > '-mfentry'; did you mean '--entry'? > make[2]: *** [/builds/linux/scripts/Makefile.build:118: > scripts/mod/devicetable-offsets.s] Error 1 > make[2]: Target '__build' not remade because of errors. > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > Build log, > https://builds.tuxbuild.com/1wfNcaYbsp29k3RvYuPXzxrM4vs/ > > metadata: > -------- > git_describe: next-20210813 > git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next > git_short_log: 4b358aabb93a (\Add linux-next specific files for 20210813\) > target_arch: s390 > toolchain: gcc-8 > > > 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 s390 --toolchain gcc-8 > --kconfig defconfig > > > -- > 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+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/clang-built-linux/CA%2BG9fYtPBp_-Ko_P7NuOX6vN9-66rjJuBt21h3arrLqEaQQn6w%40mail.gmail.com. -- Thanks, ~Nick Desaulniers
