Gnuk with GCC >= 5

[NIIBE Yutaka]

NIIBE Yutaka <gniibe at fsij.org> wrote:
> So, some configure options are irrelevant.

And I found another problem (not severe, though).

>>  *      --enable-multilib

It seems that it only enables libs for generic ARM and generic Thumb.

I think that you need to specify multilib-list to fully support
optimization for different sub architectures.

In 7.x, it's:

	--with-multilib-list=rmprofile

where "R M profile" stands for support of ARM-R and ARM-M.
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