[PATCH] Raise the minimum GCC version to 5.2

[Joe Perches]

On Sun, 2021-05-02 at 15:32 -0500, Segher Boessenkool wrote:
> On Sun, May 02, 2021 at 01:00:28PM -0700, Joe Perches wrote:
[]
> > Perhaps 8 might be best as that has a __diag warning control mechanism.
> 
> I have no idea what you mean?

? read the last bit of compiler-gcc.h