[RFC 0/2] Eliminate zero length arrays in DPDK

[Morten Brørup]

> From: Bruce Richardson [mailto:bruce.richardson at intel.com]
> Sent: Wednesday, 16 February 2022 10.33
> 
> On Tue, Feb 15, 2022 at 03:00:56PM -0800, Stephen Hemminger wrote:
> > Yet another case of applying Linux kernel best practices
> > to DPDK. Flexible arrays are supported by Clang, GCC and
> > Microsoft compilers (part of C99).
> >
> Do we need to start explicitly stating that DPDK uses C99 features, and
> adding -std=c99 to our build flags? Are we also requiring that
> applications
> are compiled with c99 features to use this (I would hope that they are,
> but
> I'm not sure we can mandate it).

No to -std=c99. It's >= C99 for applications; we should not prevent them from using a newer C standard.

Adding a note about the C standard version to the DPDK requirements documentation would be very nice. It only mentions a certain compiler version required. But I think that documenting the detailed build and runtime requirements (and why they are that way) is another task.