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Several selftests Makefiles (e.g. prctl, breakpoints, etc) attempt to normalize the ARCH variable by converting x86_64 and i.86 to x86. However, it uses the conditional assignment operator '?='. When ARCH is passed as a command-line argument (e.g., during an rpmbuild process), the '?=' operator ignores the shell command and the sed transformation. This leads to an incorrect ARCH value being used, which causes build failures # make -C tools/testing/selftests TARGETS=prctl ARCH=x86_64 make: Entering directory '/build/tools/testing/selftests' make[1]: Entering directory '/build/tools/testing/selftests/prctl' make[1]: *** No targets. Stop. make[1]: Leaving directory '/build/tools/testing/selftests/prctl' make: *** [Makefile:197: all] Error 2 Change the assignment to use 'override' and ':=' to ensure the normalization logic is applied regardless of how the ARCH variable was initially defined. Link: https://lkml.kernel.org/r/20260309205145.572778-1-aleksey.oladko@virtuozzo.com Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Bala-Vignesh-Reddy <reddybalavignesh9979@gmail.com> Cc: Chelsy Ratnawat <chelsyratnawat2001@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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