kernel: specify dependencies for compilation for config tasks
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 <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: William A. Kennington III <wak@google.com>
Change-Id: Ife5a5fb09523a7dfe359db49254a7600b4420a4c
Upstream: openembedded/openembedded-core@ff1bdd75d50f0ebac3d599e461685ace29559a82
diff --git a/import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass b/import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass
index 4ac3a39..82d8074 100644
--- a/import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass
+++ b/import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass
@@ -275,6 +275,9 @@
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} ${B}"
do_kernel_configme() {
set +e
@@ -304,7 +307,7 @@
bbfatal_log "Could not find configuration queue (${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/import-layers/yocto-poky/meta/classes/kernel.bbclass b/import-layers/yocto-poky/meta/classes/kernel.bbclass
index 78d6c30..7278514 100644
--- a/import-layers/yocto-poky/meta/classes/kernel.bbclass
+++ b/import-layers/yocto-poky/meta/classes/kernel.bbclass
@@ -489,7 +489,7 @@
:
}
-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')