kunit kernel build could fail if there are ny build artifacts from a
prior kernel build. These can be hard to debug if the build artifact
happens to be generated header file. It took me a while to debug kunit
build fail on ARCH=x86_64 in a tree which had a generated header file
arch/x86/realmode/rm/pasyms.h
make ARCH=um mrproper will not clean the tree. It is necessary to run
make ARCH=x86_64 mrproper
Example work-flow that could lead to this:
make allmodconfig (x86_64)
make
./tools/testing/kunit/kunit.py run
Add this to the documentation and kunit.py build help message.
Shuah Khan (2):
doc: kunit: add information about cleaning source trees
kunit: add tips to clean source tree to build help message
Documentation/dev-tools/kunit/start.rst | 12 ++++++++++++
tools/testing/kunit/kunit.py | 2 +-
2 files changed, 13 insertions(+), 1 deletion(-)
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2.47.2
