Specify how undefined weak symbol should be resolved in executable

[Michael Matz]

Hi,

On Tue, 23 Feb 2016, H.J. Lu wrote:

> Not only we need to change defined weak symbol behavior, we also need to 
> change undefined non-weak symbol behavior when taking its address.

Why?  An undefined non-weak symbol reference leads to a linker error, 
done.  Why change that?


Ciao,
Michael.