[oe-commits] [openembedded-core] 13/17: kernel: specify dependencies for compilation for config tasks

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rpurdie pushed a commit to branch master-next
in repository openembedded-core.

commit 1da086b842c20ce4a1bf4606c11c9722a054e9cf
Author: Bruce Ashfield <bruce.ashfield at windriver.com>
AuthorDate: Wed Jun 6 22:07:26 2018 -0400

    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 at windriver.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 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 4ac3a39..82d8074 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 68d2185..972ac52 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')

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