Re: [Qemu-devel] [PATCH for-2.7] pc-bios/optionrom: Fix OpenBSD build with better detection of linker emulation

[Peter Maydell]

On 11 August 2016 at 00:42, Brad Smith <address@hidden> wrote:
> On 08/08/16 12:11, Peter Maydell wrote:
>>
>> The various host OSes are irritatingly variable about the name
>> of the linker emulation we need to pass to ld's -m option to
>> build the i386 option ROMs. Instead of doing this via a
>> CONFIG ifdef, check in configure whether any of the emulation
>> names we know about will work and pass the right answer through
>> to the makefile. If we can't find one, we fall back to not trying
>> to build the option ROMs, in the same way we would for a non-x86
>> host platform.
>>
>> This is in particular necessary to unbreak the build on OpenBSD,
>> since it wants a different answer to FreeBSD and we don't have
>> an existing CONFIG_ variable that distinguishes the two.
>
>
> To add to this.. amd64 uses "elf_i386". Looking at i386 it uses
> elf_i386_obsd and that is the only emulation supported.
>
> So change the list of emulations to try to
>
> elf_i386 elf_i386_fbsd elf_i386_obsd i386pe
>
>
> Someone needs to take a look at what NetBSD / DragonFly are
> using.

My NetBSD 6.1.4 amd64 VM uses elf_i386. Building should
still work on an OS which doesn't support an emulation
in the list in configure -- we'll just fall back to
not building the option ROMs, which is the same position
any non-x86 host architecture is in.

thanks
-- PMM