[PATCH v2] build: announce requirement for C11

[Bruce Richardson]

On Thu, May 04, 2023 at 09:50:09AM +0200, Mattias Rönnblom wrote:
> On 2023-05-03 19:30, Bruce Richardson wrote:
> > Add a deprecation notice informing users that we will require a C11
> > compiler from 23.11 release onwards. This requirement was agreed by
> > technical board to enable use of newer C language features, e.g.
> > standard atomics. [1]
> > 
> > [1] http://inbox.dpdk.org/dev/DBAPR08MB58148CEC3E1454E8848A938998AB9@DBAPR08MB5814.eurprd08.prod.outlook.com/
> > 
> > Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
> > Acked-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
> > 
> > ---
> > 
> > V2:
> > - add requirement for stdatomics
> > - fix sphinx formatting
> > ---
> >   doc/guides/rel_notes/deprecation.rst | 9 +++++++++
> >   1 file changed, 9 insertions(+)
> > 
> > diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
> > index dcc1ca1696..70c6019d26 100644
> > --- a/doc/guides/rel_notes/deprecation.rst
> > +++ b/doc/guides/rel_notes/deprecation.rst
> > @@ -11,6 +11,15 @@ here.
> >   Deprecation Notices
> >   -------------------
> > +* C Compiler: From DPDK 23.11 onwards,
> > +  building DPDK will require a C compiler which supports the C11 standard,
> > +  including support for C11 standard atomics.
> 
> The whole of C11, or just the mandatory parts (+atomics)?
> 
I assume we only need mandatory + atomics, however perhaps someone more
knowledgable about what the optional parts of the spec are, can correct me
on this. Once clarified, I maybe should reword this yet again to call it
out even more specificallly.

/Bruce