* [PATCH v3] selftests: kvm: Fix libkvm build error
@ 2019-10-02 23:14 Shuah Khan
2019-10-03 10:00 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Shuah Khan @ 2019-10-02 23:14 UTC (permalink / raw)
To: pbonzini, rkrcmar, shuah; +Cc: Shuah Khan, kvm, linux-kselftest, linux-kernel
Fix the following build error from "make TARGETS=kvm kselftest":
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
This error is seen when build is done from the main Makefile using
kselftest target. In this case KBUILD_CPPFLAGS and CC_OPTION_CFLAGS
are defined.
When build is invoked using:
"make -C tools/testing/selftests/kvm" KBUILD_CPPFLAGS and CC_OPTION_CFLAGS
aren't defined.
There is no need to pass in KBUILD_CPPFLAGS and CC_OPTION_CFLAGS for the
check to determine if --no-pie is necessary, which is the case when these
two aren't defined when "make -C tools/testing/selftests/kvm" runs.
Fix it by simplifying the no-pie-option logic. With this change, both
build variations work.
"make TARGETS=kvm kselftest"
"make -C tools/testing/selftests/kvm"
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
---
Changes since v2:
-- Removed extra blank line added by accident.
-- Fixed commit log.
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..7ee097658ef0 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -48,7 +48,7 @@ CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
-I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -Iinclude/$(UNAME_M) -I..
no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
- $(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)
+ $(CC) -Werror -no-pie -x c - -o "$$TMP", -no-pie)
# On s390, build the testcases KVM-enabled
pgste-option = $(call try-run, echo 'int main() { return 0; }' | \
--
2.20.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v3] selftests: kvm: Fix libkvm build error
2019-10-02 23:14 [PATCH v3] selftests: kvm: Fix libkvm build error Shuah Khan
@ 2019-10-03 10:00 ` Paolo Bonzini
0 siblings, 0 replies; 2+ messages in thread
From: Paolo Bonzini @ 2019-10-03 10:00 UTC (permalink / raw)
To: Shuah Khan, rkrcmar, shuah; +Cc: kvm, linux-kselftest, linux-kernel
On 03/10/19 01:14, Shuah Khan wrote:
> Fix the following build error from "make TARGETS=kvm kselftest":
>
> libkvm.a(assert.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIC
>
> This error is seen when build is done from the main Makefile using
> kselftest target. In this case KBUILD_CPPFLAGS and CC_OPTION_CFLAGS
> are defined.
>
> When build is invoked using:
>
> "make -C tools/testing/selftests/kvm" KBUILD_CPPFLAGS and CC_OPTION_CFLAGS
> aren't defined.
>
> There is no need to pass in KBUILD_CPPFLAGS and CC_OPTION_CFLAGS for the
> check to determine if --no-pie is necessary, which is the case when these
> two aren't defined when "make -C tools/testing/selftests/kvm" runs.
>
> Fix it by simplifying the no-pie-option logic. With this change, both
> build variations work.
>
> "make TARGETS=kvm kselftest"
> "make -C tools/testing/selftests/kvm"
>
> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
> ---
> Changes since v2:
> -- Removed extra blank line added by accident.
> -- Fixed commit log.
>
> tools/testing/selftests/kvm/Makefile | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index 62c591f87dab..7ee097658ef0 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -48,7 +48,7 @@ CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
> -I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -Iinclude/$(UNAME_M) -I..
>
> no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
> - $(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)
> + $(CC) -Werror -no-pie -x c - -o "$$TMP", -no-pie)
>
> # On s390, build the testcases KVM-enabled
> pgste-option = $(call try-run, echo 'int main() { return 0; }' | \
>
Queued, thanks.
Paolo
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