[patch] allow suppression of fde encoding warning

[Ian Lance Taylor]

On Sat, Jan 19, 2013 at 12:14 PM, Sandra Loosemore
<sandra@codesourcery.com> wrote:
>
> Google turned up a few references to this problem on other targets that
> indicated that the "right" solution is for GCC to emit section-relative
> references in the FDE data.  But, not all architectures support such a thing
> in the ABI (and, in particular, the Nios II ABI doesn't have an appropriate
> relocation for this purpose).  So, it seems like we should be able to turn
> the warning off on architectures where the optimization cannot possibly
> work.

I think the correct solution is to avoid using the --eh-frame-hdr
option on architectures where it can not work.  I think the linker is
correctly warning you that although you explicitly specified
--eh-frame-hdr, you aren't going to get an exception frame header.

Ian