[PATCH] D13055: [ELF2] Handle -m option

[Rafael Espíndola via llvm-commits]

> Returned back FirstObjName config variable since we need a flag indicating whether ELF parameters were grabbed from the first object file or from the -m option.

Why?

You report an error as soon as an incompatibility is found. If
getFirstELF returns non null, you know either

* There was a -m and it is compatible with it
* There was no -m and you don't have to worry about it

In any case you only have to check if that file is compatible with the
current one.

Cheers,
Rafael