From: Arnd Bergmann <arnd@xxxxxxxx> Subject: selftest/fpu: avoid clang warning With extra warnings enabled, clang complains about the redundant -mhard-float argument: clang: error: argument unused during compilation: '-mhard-float' [-Werror,-Wunused-command-line-argument] Move this into the gcc-only part of the Makefile. Link: https://lkml.kernel.org/r/20201203223652.1320700-1-arnd@xxxxxxxxxx Fixes: 4185b3b92792 ("selftests/fpu: Add an FPU selftest") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Cc: Nathan Chancellor <natechancellor@xxxxxxxxx> Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Cc: Petteri Aimonen <jpa@xxxxxxxxxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/lib/Makefile~selftest-fpu-avoid-clang-warning +++ a/lib/Makefile @@ -107,7 +107,7 @@ obj-$(CONFIG_TEST_FREE_PAGES) += test_fr # off the generation of FPU/SSE* instructions for kernel proper but FPU_FLAGS # get appended last to CFLAGS and thus override those previous compiler options. # -FPU_CFLAGS := -mhard-float -msse -msse2 +FPU_CFLAGS := -msse -msse2 ifdef CONFIG_CC_IS_GCC # Stack alignment mismatch, proceed with caution. # GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3 @@ -120,6 +120,7 @@ ifdef CONFIG_CC_IS_GCC # -mpreferred-stack-boundary=3 is not between 4 and 12 # # can be triggered. Otherwise gcc doesn't complain. +FPU_CFLAGS += -mhard-float FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-stack-boundary=4) endif _
