linux-kernel - Re: [PATCH] kselftest/alsa: add silent flag to reduce noise

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Message-ID: <62c6883c-19ca-4ccb-ae78-dd3e665fca08@linuxfoundation.org>
Date: Fri, 20 Sep 2024 10:24:56 -0600
From: Shuah Khan <skhan@...uxfoundation.org>
To: Abdul Rahim <abdul.rahim@...ahoo.com>
Cc: perex@...ex.cz, tiwai@...e.com, broonie@...nel.org, shuah@...nel.org,
 linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
 Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH] kselftest/alsa: add silent flag to reduce noise

On 9/20/24 09:27, Shuah Khan wrote:
> On 9/19/24 15:49, Abdul Rahim wrote:
>> On Thu, Sep 19, 2024 at 09:40:34AM GMT, Shuah Khan wrote:
>>> On 9/15/24 17:41, Abdul Rahim wrote:
>>>> When ALSA is not installed on the users system, the error:
>>>>
>>>> "Package alsa was not found in the pkg-config search path.
>>>> Perhaps you should add the directory containing `alsa.pc'
>>>> to the PKG_CONFIG_PATH environment variable
>>>> Package 'alsa', required by 'virtual:world', not found"
>>>>
>>>
>>> extra line?
>>>
>>>> is printed 3 times, which generates unnecessary noise.
>>>> Hence, Remove unnecessary noise using `--silence-errors` on LDLIBS
>>>> assignment, so the message is printed only once.
>>>
>>> I would say this message is alerting the user that the package is missing.
>>> Why would you want to delete it?
>>>
>>>>
>>>> Signed-off-by: Abdul Rahim <abdul.rahim@...ahoo.com>
>>>> ---
>>>>    tools/testing/selftests/alsa/Makefile | 2 +-
>>>>    1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/tools/testing/selftests/alsa/Makefile b/tools/testing/selftests/alsa/Makefile
>>>> index 25be68025290..cd022fc869fb 100644
>>>> --- a/tools/testing/selftests/alsa/Makefile
>>>> +++ b/tools/testing/selftests/alsa/Makefile
>>>> @@ -2,7 +2,7 @@
>>>>    #
>>>>    CFLAGS += $(shell pkg-config --cflags alsa) $(KHDR_INCLUDES)
>>>> -LDLIBS += $(shell pkg-config --libs alsa)
>>>> +LDLIBS += $(shell pkg-config --silence-errors --libs alsa)
>>>>    ifeq ($(LDLIBS),)
>>>>    LDLIBS += -lasound
>>>>    endif
>>>
>>>
>>> thanks,
>>> -- Shuah
>>>
>>
>> This can also be handled like this:
>> ---
>> CHECK := $(shell pkg-config --exists alsa; echo $?)
>> ifneq ($(CHECK),0)
>> $(error Package alsa not found! Add directory containing alsa.pc in PKG_CONFIG_PATH)
>> endif
>> ---
>>
> 
> This is a better solution than suppressing errors.
> 

One more thing. "make kselftest-all" has to continue even if this error causes alsa
compile to fail.

thanks,
-- Shuah