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Re: Build system mess in stubdom


  • To: Jan Beulich <jbeulich@xxxxxxxx>
  • From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Date: Tue, 9 Jul 2024 16:18:55 +0100
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  • Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Anthony Perard <anthony@xxxxxxxxxxxxxx>, Charles Arnold <CARNOLD@xxxxxxxx>
  • Delivery-date: Tue, 09 Jul 2024 15:19:22 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 09/07/2024 3:55 pm, Jan Beulich wrote:
> On 09.07.2024 15:49, Andrew Cooper wrote:
>> I'm trying to investigate why stubdom/ is fatally failing now with a
>> rebuilt ArchLinux container (GCC 14).
>>
>> It is ultimately:
>>
>>> ../../../../../newlib-1.16.0/newlib/libc/reent/signalr.c:61:14: error:
>>> implicit declaration of function ‘kill’; did you mean ‘_kill’?
>>> [-Wimplicit-function-declaration]
>>>    61 |   if ((ret = _kill (pid, sig)) == -1 && errno != 0)
>>>       |              ^~~~~
>>> make[7]: *** [Makefile:483: lib_a-signalr.o] Error 1
>> which doesn't make sense, but is a consequence of the ifdefary in
>> newlib/libc/include/_syslist.h
> Charles, who is looking after our Xen packages, had run into exactly this.
> His workaround patch (added to the list of patches applied on top of
> newlib by stubdom/Makefile) is below, but in the given form I didn't expect
> it would be upstreamable. The diagnostics by the compiler may be a little
> misleading ...
>
> Jan

Looking through newlib's upstream, I'm going to experiment with updating
to 4.4.0 (Dec 2023).

It's the most recent version, and it's marginally ahead of a very large
number of "make build work with GCC 14" commits.

I feel this is going to be less effort than continuing to duct tape an
obsolete version for newer compilers.

~Andrew



 


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