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Bug#1069498: libx86emu: FTBFS on armhf: mem.c:581:12: error: implicit declaration of function ‘inb’; did you mean ‘ins’? [-Werror=implicit-function-declaration]

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Hi Guillem,

On Tue, 2024-06-11 at 13:42 +0200, Guillem Jover wrote:
> > I had a look at this, and it seems like this package has never really
> > worked on ARM systems at all? And this was hidden due to the missing
> > declarations not being an error.
> > 
> > AFAIK, only x86 (i386 and amd64), ia64 and alpha have port I/O, other
> > systems have instead memory mapped I/O, but the code in mem.c is
> > unconditionally calling port I/O functions such as in*() and out*(),
> > provided by glibc.
> > 
> > Until the upstream code is ported to systems with memory mapper I/O, I
> > think the "best" way to resolve this would be to restrict the
> > architecture list to:
> > 
> >   any-amd64 any-i386 alpha ia64
> 
> The attached patch implements this. It should not affect reverse build
> depending packages (only hwinfo) which is already arch restricted to
> «amd64 i386».
> 
> I'm including the arm list to confirm the above, but also in case
> someone there feels like porting the library to support memory mapped
> I/O? (But perhaps that's not worth the effort.)

It's perfectly fine to disable libx86emu on ARM as it has already been
correctly stated, there are no I/O ports on ARM so the above code won't
work on ARM.

I also don't expect that to change in the future, so it's not worth bothering
about this in the future, especially since the upstream project hasn't been
very active lately [1].

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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Bug#1069498: libx86emu: FTBFS on armhf: mem.c:581:12: error: implicit declaration of function ‘inb’; did you mean ‘ins’? [-Werror=implicit-function-declaration] Guillem Jover <gjover@sipwise.com> - 2024-06-11 13:50 +0200
  Bug#1069498: libx86emu: FTBFS on armhf: mem.c:581:12: error: implicit declaration of function ‘inb’; did you mean ‘ins’? [-Werror=implicit-function-declaration] John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> - 2024-06-11 14:30 +0200

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