From: Andy Lutomirski <luto@amacapital.net>
To: Ingo Molnar <mingo@kernel.org>
Cc: X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Denys Vlasenko <vda.linux@googlemail.com>,
Shuah Khan <shuah.kh@samsung.com>, Borislav Petkov <bp@alien8.de>
Subject: Re: [PATCH v2] x86, selftests: Add sigreturn_32 selftest
Date: Tue, 10 Mar 2015 06:17:59 -0700 [thread overview]
Message-ID: <CALCETrU2tcRt+AVwVN3z6cSev4g824b7gndBt+QT1ZU+nm63kQ@mail.gmail.com> (raw)
In-Reply-To: <20150310045725.GA10473@gmail.com>
On Mon, Mar 9, 2015 at 9:57 PM, Ingo Molnar <mingo@kernel.org> wrote:
>
> * Andy Lutomirski <luto@amacapital.net> wrote:
>
>> On Mon, Mar 9, 2015 at 9:48 AM, Ingo Molnar <mingo@kernel.org> wrote:
>> >
>> > now I get this build failure:
>> >
>> > make[1]: Entering directory
>> > '/home/mingo/tip/tools/testing/selftests/x86'
>> > gcc -m32 -o sigreturn_32 -O2 -g -std=gnu99 -pthread -Wall sigreturn.c -lrt -ldl
>> > In file included from /usr/include/time.h:27:0,
>> > from sigreturn.c:13:
>> > /usr/include/features.h:374:25: fatal error: sys/cdefs.h: No such file or directory
>> > # include <sys/cdefs.h>
>> > ^
>> > compilation terminated.
>> > Makefile:18: recipe for target 'sigreturn_32' failed
>> > make[1]: *** [sigreturn_32] Error 1
>>
>> It builds for me on Ubuntu.
>>
>> It looks like your 32-bit build setup is broken. The line that's
>> failing to compile is:
>>
>> #include <time.h>
>>
>> Are you missing 32-bit headers? This test *can't* be run as a 64-bit binary.
>
> Yeah, was a relatively fresh testbox, the magic incantation to get it
> to build there was:
>
> apt-get install gcc-multilib libc6-i386 libc6-dev-i386
>
> On Fedora it's:
>
> yum install glibc-devel.*i686
>
> Might make sense to include that in a README or so.
I could rig up the makefile to give that hint.
Should we just say that selftests/x86 won't work if you can't build
32-bit binaries, or should we try to degrade more gracefully?
--Andy
>
> Thanks,
>
> Ingo
--
Andy Lutomirski
AMA Capital Management, LLC
next prev parent reply other threads:[~2015-03-10 13:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-09 16:36 [PATCH v2] x86, selftests: Add sigreturn_32 selftest Andy Lutomirski
2015-03-09 16:48 ` Ingo Molnar
2015-03-09 17:48 ` Andy Lutomirski
2015-03-10 4:57 ` Ingo Molnar
2015-03-10 13:17 ` Andy Lutomirski [this message]
2015-03-10 13:55 ` Ingo Molnar
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