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From: "Andy Lutomirski" <luto@kernel.org>
To: "Florian Weimer" <fweimer@redhat.com>
Cc: linux-arch@vger.kernel.org,
	"Linux API" <linux-api@vger.kernel.org>,
	linux-x86_64@vger.kernel.org,
	kernel-hardening@lists.openwall.com, linux-mm@kvack.org,
	"the arch/x86 maintainers" <x86@kernel.org>,
	musl@lists.openwall.com,
	"Dave Hansen via Libc-alpha" <libc-alpha@sourceware.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"Dave Hansen" <dave.hansen@intel.com>,
	"Kees Cook" <keescook@chromium.org>,
	"Andrei Vagin" <avagin@gmail.com>
Subject: [musl] Re: [PATCH v3 2/3] selftests/x86/Makefile: Support per-target $(LIBS) configuration
Date: Thu, 13 Jan 2022 18:34:20 -0800	[thread overview]
Message-ID: <5a4f01f4-cd16-47dd-880b-dcfb7ec5daeb@www.fastmail.com> (raw)
In-Reply-To: <87lezjxpnc.fsf@oldenburg.str.redhat.com>

On Thu, Jan 13, 2022, at 2:00 PM, Florian Weimer wrote:
> * Andy Lutomirski:
>
>> On 1/5/22 08:03, Florian Weimer wrote:
>>> And avoid compiling PCHs by accident.
>>> 
>>
>> The patch seems fine, but I can't make heads or tails of the
>> $SUBJECT. Can you help me?
>
> What about this?
>
> selftests/x86/Makefile: Set linked libraries using $(LIBS)
>
> I guess that it's possible to use make features to set this per target
> isn't important.

I think that's actually important -- it's nice to explain to make dummies (e.g. me) what the purpose is is.  I assume it's so that a given test can override the libraries.  Also, you've conflated two different changes into one patch: removal of .h and addition of LIBS.

--Andy



>
> Thanks,
> Florian
>
>>> Signed-off-by: Florian Weimer <fweimer@redhat.com>
>>> ---
>>> v3: Patch split out.
>>>   tools/testing/selftests/x86/Makefile | 6 ++++--
>>>   1 file changed, 4 insertions(+), 2 deletions(-)
>>> diff --git a/tools/testing/selftests/x86/Makefile
>>> b/tools/testing/selftests/x86/Makefile
>>> index 8a1f62ab3c8e..0993d12f2c38 100644
>>> --- a/tools/testing/selftests/x86/Makefile
>>> +++ b/tools/testing/selftests/x86/Makefile
>>> @@ -72,10 +72,12 @@ all_64: $(BINARIES_64)
>>>   EXTRA_CLEAN := $(BINARIES_32) $(BINARIES_64)
>>>     $(BINARIES_32): $(OUTPUT)/%_32: %.c helpers.h
>>> -	$(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl -lm
>>> +	$(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $(filter-out %.h, $^) \
>>> +		$(or $(LIBS), -lrt -ldl -lm)
>>>     $(BINARIES_64): $(OUTPUT)/%_64: %.c helpers.h
>>> -	$(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl
>>> +	$(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $(filter-out %.h, $^) \
>>> +		$(or $(LIBS), -lrt -ldl -lm)
>>>     # x86_64 users should be encouraged to install 32-bit libraries
>>>   ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)

  reply	other threads:[~2022-01-14  2:35 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-05 16:02 [musl] [PATCH v3 1/3] x86: Implement arch_prctl(ARCH_VSYSCALL_CONTROL) to disable vsyscall Florian Weimer
2022-01-05 16:03 ` [musl] [PATCH v3 2/3] selftests/x86/Makefile: Support per-target $(LIBS) configuration Florian Weimer
2022-01-05 16:03   ` [musl] [PATCH v3 3/3] x86: Add test for arch_prctl(ARCH_VSYSCALL_CONTROL) Florian Weimer
2022-01-13 21:31     ` [musl] " Andy Lutomirski
2022-01-13 21:57       ` Florian Weimer
2022-01-13 21:31   ` [musl] Re: [PATCH v3 2/3] selftests/x86/Makefile: Support per-target $(LIBS) configuration Andy Lutomirski
2022-01-13 22:00     ` Florian Weimer
2022-01-14  2:34       ` Andy Lutomirski [this message]
2022-01-14 13:28         ` Florian Weimer
2022-01-13 17:27 ` [musl] Re: [PATCH v3 1/3] x86: Implement arch_prctl(ARCH_VSYSCALL_CONTROL) to disable vsyscall Florian Weimer
2022-01-13 21:47 ` Andy Lutomirski
2022-01-14 13:36   ` Florian Weimer

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