netdev - Re: [PATCH v2] selftests/seccomp: Fix seccomp failure by adding missing headers

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Message-ID: <4b739847-0622-c221-33b3-9fe428a52bc0@collabora.com>
Date:   Tue, 15 Feb 2022 23:17:39 +0500
From:   Muhammad Usama Anjum <usama.anjum@...labora.com>
To:     Sherry Yang <sherry.yang@...cle.com>
Cc:     usama.anjum@...labora.com, Shuah Khan <skhan@...uxfoundation.org>,
        "shuah@...nel.org" <shuah@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        "luto@...capital.net" <luto@...capital.net>,
        "wad@...omium.org" <wad@...omium.org>,
        "christian@...uner.io" <christian@...uner.io>,
        "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "andrii@...nel.org" <andrii@...nel.org>,
        "kafai@...com" <kafai@...com>,
        "songliubraving@...com" <songliubraving@...com>,
        "yhs@...com" <yhs@...com>,
        "john.fastabend@...il.com" <john.fastabend@...il.com>,
        "kpsingh@...nel.org" <kpsingh@...nel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>
Subject: Re: [PATCH v2] selftests/seccomp: Fix seccomp failure by adding
 missing headers


On 2/14/22 9:12 PM, Muhammad Usama Anjum wrote:
>>> "../../../../usr/include/" directory doesn't have header files if
>>> different output directory is used for kselftests build like "make -C
>>> tools/tests/selftest O=build". Can you try adding recently added
>>> variable, KHDR_INCLUDES here which makes this kind of headers inclusion
>>> easy and correct for other build combinations as well?
>>>
>>>
>>
>> Hi Muhammad,
>>
>> I just pulled linux-next, and tried with KHDR_INCLUDES. It works. Very nice 
>> work! I really appreciate you made headers inclusion compatible. However, 
>> my case is a little more complicated. It will throw warnings with -I, using 
>> -isystem can suppress these warnings, more details please refer to 
>> https://lore.kernel.org/all/C340461A-6FD2-440A-8EFC-D7E85BF48DB5@oracle.com/
>>
>> According to this case, do you think will it be better to export header path 
>> (KHDR_INCLUDES) without “-I”?
> Well said. I've thought about it and it seems like -isystem is better
> than -I. I've sent a patch:
> https://lore.kernel.org/linux-kselftest/20220214160756.3543590-1-usama.anjum@collabora.com/
> I'm looking forward to discussion on it.
The patch has been accepted. It should appear in linux-next soon. You
should be able to use KHDR_INCLUDES easily now.

Thanks,
Usama