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Michael Ellerman authored
The changes to enable building with a separate output directory, in commit a8ba798b ("selftests: enable O and KBUILD_OUTPUT") broke building the powerpc selftests on their own, eg: $ cd tools/testing/selftests/powerpc; make It was partially fixed in commit e53aff45 ("selftests: lib.mk Fix individual test builds"), which defined OUTPUT for standalone tests. But that only defines OUTPUT within the Makefile, the value is not exported so sub-shells can't see it. We could export OUTPUT, but it's actually cleaner to just expand the value of OUTPUT before we invoke the shell. Fixes: a8ba798b ("selftests: enable O and KBUILD_OUTPUT") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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