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 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
