[PATCH] D28898: [ELF] - Allow emulation to be different from input objects target.

[Simon Atanasyan via llvm-commits]

On Mon, Jan 23, 2017 at 5:54 PM, Rafael Avila de Espindola
<rafael.espindola at gmail.com> wrote:
> Rafael Avila de Espindola <rafael.espindola at gmail.com> writes:
>
>>> +  // Take machine type from emulation first. That is done early so
>>> +  // we are able to report wrong emulation values if any.
>>> +  if (!Config->Emulation.empty()) {
>>> +    std::tie(Config->EKind, Config->EMachine, Config->OSABI) =
>>> +        parseEmulation(Config->Emulation);
>>> +    Config->MipsN32Abi = Config->Emulation == "elf32btsmipn32" ||
>>> +                         Config->Emulation == "elf32ltsmipn32";
>>> +  }
>>
>> What breaks without this? I am probably OK with completely ignoring -m
>> if a .o is present (which I assume is what gold does), but it feels odd
>> to use only some bits of it.
>
> BTW, have you tried asking the original author why the mismatched -m and
> .o?

The idea is to show an error if a user provides mismatched input *.o files and
-m option's value.

-- 
Simon Atanasyan