RFC: requiring GCC >= 4.7 to build glibc

[H.J. Lu]

On Thu, Aug 20, 2015 at 6:51 AM, Joseph Myers <joseph@codesourcery.com> wrote:
> For glibc 2.21 we increased the minimum GCC version for building glibc to
> 4.6.  There's one major GCC release a year, so the correspondingly old
> version for glibc 2.23 would be GCC 4.7.  What do people think about
> increasing the minimum version requirement?
>
> Benefits include:
>
> * Being able to assume __atomic_* are supported by the compiler if
> desired.
>
> * When using pragmas to disable -Wmaybe-uninitialized warnings, no need to
> have conditionals to disable -Wuninitialized instead for 4.6
> (-Wmaybe-uninitialized was added in 4.7).
>
> * More C11 support, so we no longer need to XFAIL some conform/ tests and
> could use the new features in glibc if desired.
>

No problem on i386, x86-64 and x32.

-- 
H.J.