Re: [PATCH] selftests: kvm: Fix libkvm build error

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On 24/09/19 22:14, Shuah Khan wrote:
> Fix the following build error:
> 
> libkvm.a(assert.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIC
> 
> Add -fPIC to CFLAGS to fix it.

This is wrong, these testcases cannot be position-independent 
executables.  Can you include the failing command line from "V=1" 
output?

The problem seems to be that these definitions are not working properly:

no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
        $(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)

LDFLAGS += -pthread $(no-pie-option)

Thanks,

Paolo

> Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
> ---
>  tools/testing/selftests/kvm/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index 62c591f87dab..b4a55d300e75 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -44,7 +44,7 @@ INSTALL_HDR_PATH = $(top_srcdir)/usr
>  LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/
>  LINUX_TOOL_INCLUDE = $(top_srcdir)/tools/include
>  CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
> -	-fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \
> +	-fno-stack-protector -fPIC -fno-PIE -I$(LINUX_TOOL_INCLUDE) \
>  	-I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -Iinclude/$(UNAME_M) -I..
>  
>  no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
> 




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