linux-kernel - Re: [REGRESSION] uml: signal.c build errors

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Message-ID: <87hapj3a9q.fsf@mattleach.net>
Date:	Wed, 24 Oct 2012 21:06:25 +0100
From:	Matthew Leach <matthew@...tleach.net>
To:	Richard Weinberger <richard@....at>
Cc:	linux-kernel@...r.kernel.org,
	Martin Pärtel <martin.partel@...il.com>
Subject: Re: [REGRESSION] uml: signal.c build errors

Richard Weinberger <richard@....at> writes:
> Am Wed, 24 Oct 2012 20:48:52 +0100
> schrieb Matthew Leach <matthew@...tleach.net>:
>
>> 
>> Richard Weinberger <richard@....at> writes:
>> > Am Wed, 24 Oct 2012 00:18:34 +0100
>> >> I have tracked this down to [1] where, indeed, the type of
>> >> sig_info is different; the second parameter in signal.c is
>> >> 'siginfo_t' where as in as-layout.h the second parameter's type is
>> >> declared as 'struct siginfo'.
>> >> 
>> >> [1]: d3c1cfcdb43e023ab1b1c7a555cd9e929026500a
>> >
>> > Looks like we have to revert that commit.
>> > Moving everything to siginfo_t requires a non-trivial header cleanup
>> > and may introduce new regressions.
>> >
>> > Matthew, does the attached revert patch help?
>> 
>> The revert did remove the errors for the compilation of signal.c, so
>> that seems fine. I still get the following errors, however:
>> 
>>   CC      arch/um/os-Linux/sigio.o
>>   CC      arch/um/os-Linux/signal.o
>>   CC      arch/um/os-Linux/start_up.o
>> arch/um/os-Linux/start_up.c: In function ‘check_coredump_limit’:
>> arch/um/os-Linux/start_up.c:338:16: error: storage size of ‘lim’
>> isn’t known arch/um/os-Linux/start_up.c:339:2: error: implicit
>> declaration of function
>> ‘getrlimit’ [-Werror=implicit-function-declaration]
>> arch/um/os-Linux/start_up.c:339:22: error: ‘RLIMIT_CORE’ undeclared
>> (first use in this function) arch/um/os-Linux/start_up.c:339:22:
>> note: each undeclared identifier is reported only once for each
>> function it appears in arch/um/os-Linux/start_up.c:347:22: error:
>> ‘RLIM_INFINITY’ undeclared (first use in this function)
>> arch/um/os-Linux/start_up.c:338:16: warning: unused variable
>> ‘lim’ [-Wunused-variable] cc1: some warnings being treated as errors
>> make[1]: *** [arch/um/os-Linux/start_up.o] Error 1 make: ***
>> [arch/um/os-Linux] Error 2
>
> Does adding
> #include <sys/time.h>
> #include <sys/resource.h>
>
> to arch/um/os-Linux/start_up.c help?

Adding the above includes and the revert commit did the trick!

Thanks,
matt
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