path: root/meta/classes
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authorJustin Bronder <>2019-03-01 00:34:26 -0500
committerRichard Purdie <>2019-03-01 07:12:40 +0000
commit7d4fdd3b95c949277f77df90bb2e8120b8d167ae (patch)
tree86857afd8bea4ce9c4843e835ef89c836c640e7d /meta/classes
parent5c1c1f223c6618d033ea23abb33dacc230e754de (diff)
kernel: add objtool to shared workdir when CONFIG_UNWINDER_ORC is set
Based on: When x86_64 enables CONFIG_UNWINDER_ORC [ORC (Oops Rewind Capability) unwinder for unwinding kernel stack traces], objtool is required to generate the required information. If we don't copy objtool to the shared workdir, out-of-tree modules cannot generate object files. For instance, meta-skeleton/hello-mod fails with: | make[3]: *** No rule to make target 'tools/objtool/objtool', needed by ... Signed-off-by: Bruce Ashfield <> Signed-off-by: Richard Purdie <>
Diffstat (limited to 'meta/classes')
1 files changed, 9 insertions, 0 deletions
diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index a5b1df1b0d..9da9818962 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -487,6 +487,15 @@ do_shared_workdir () {
mkdir -p $kerneldir/arch/${ARCH}/include/generated/
cp -fR arch/${ARCH}/include/generated/* $kerneldir/arch/${ARCH}/include/generated/
+ if (grep -q -i -e '^CONFIG_UNWINDER_ORC=y$' $kerneldir/.config); then
+ # With CONFIG_UNWINDER_ORC (the default in 4.14), objtool is required for
+ # out-of-tree modules to be able to generate object files.
+ if [ -x tools/objtool/objtool ]; then
+ mkdir -p ${kerneldir}/tools/objtool
+ cp tools/objtool/objtool ${kerneldir}/tools/objtool/
+ fi
+ fi
# We don't need to stage anything, not the modules/firmware since those would clash with linux-firmware