With recent kernels (i.e. 4.17+) the configuration phase of the kernel will check for capabilities/options of the compiler for CVE and other mitigation support.
For a general kernel, we want to ensure that CC is fully defined when the config targets are invoked (so the proper compiler will be checked). For linux-yocto, we also need to specify the compiler/tools dependencies for the configme task since it executes before configure and hence the main kernel build DEPENDS will not always be in the sysroot before it executes. Without those dependencies the kernel will be incorrectly configured (i.e. bison is missing) or the configuration will fail the mitigation tests. [YOCTO #12757] Signed-off-by: Bruce Ashfield <[email protected]> --- meta/classes/kernel-yocto.bbclass | 5 ++++- meta/classes/kernel.bbclass | 2 +- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass index 4ac3a39e4750..82d80741a951 100644 --- a/meta/classes/kernel-yocto.bbclass +++ b/meta/classes/kernel-yocto.bbclass @@ -275,6 +275,9 @@ addtask kernel_metadata after do_validate_branches do_unpack before do_patch do_kernel_metadata[depends] = "kern-tools-native:do_populate_sysroot" do_validate_branches[depends] = "kern-tools-native:do_populate_sysroot" +do_kernel_configme[depends] += "virtual/${TARGET_PREFIX}binutils:do_populate_sysroot" +do_kernel_configme[depends] += "virtual/${TARGET_PREFIX}gcc:do_populate_sysroot" +do_kernel_configme[depends] += "bc-native:do_populate_sysroot bison-native:do_populate_sysroot" do_kernel_configme[dirs] += "${S} ${B}" do_kernel_configme() { set +e @@ -304,7 +307,7 @@ do_kernel_configme() { bbfatal_log "Could not find configuration queue (${meta_dir}/config.queue)" fi - CFLAGS="${CFLAGS} ${TOOLCHAIN_OPTIONS}" ARCH=${ARCH} merge_config.sh -O ${B} ${config_flags} ${configs} > ${meta_dir}/cfg/merge_config_build.log 2>&1 + CFLAGS="${CFLAGS} ${TOOLCHAIN_OPTIONS}" HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}" CC="${KERNEL_CC}" ARCH=${ARCH} merge_config.sh -O ${B} ${config_flags} ${configs} > ${meta_dir}/cfg/merge_config_build.log 2>&1 if [ $? -ne 0 ]; then bbfatal_log "Could not configure ${KMACHINE}-${LINUX_KERNEL_TYPE}" fi diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass index 68d218584a7e..972ac52814ef 100644 --- a/meta/classes/kernel.bbclass +++ b/meta/classes/kernel.bbclass @@ -494,7 +494,7 @@ sysroot_stage_all () { : } -KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} O=${B} oldnoconfig" +KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} CC="${KERNEL_CC}" O=${B} oldnoconfig" python check_oldest_kernel() { oldest_kernel = d.getVar('OLDEST_KERNEL') -- 2.5.0 -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
