Re: [PATCH v5] build: update DPDK to use C11 standard

[Bruce Richardson <bruce.richardson@intel.com>]

On Wed, Aug 02, 2023 at 01:31:34PM +0100, Bruce Richardson wrote:
> As previously announced, DPDK 23.11 will require a C11 supporting
> compiler and will use the C11 standard in all builds.
> 
> Forcing use of the C standard, rather than the standard with
> GNU extensions, means that some posix definitions which are not in
> the C standard are unavailable by default. We fix this by ensuring
> the correct defines or cflags are passed to the components that
> need them.
> 
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> Acked-by: Morten Brørup <mb@smartsharesystems.com>
> Acked-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> ---
> V5:
> * Fix build issues with bool type in altivec code, due to bool type
>   being in C11. Use __bool for altivec-specific version instead.
> 
Just a note on the altivec builds: from my testing on latest ubuntu with
"powerpc64le-linux-gnu-gcc (Ubuntu 12.3.0-1ubuntu1~23.04)", there are quite
a few warnings/errors building the current DPDK mainline. This patch
doesn't fix any of those errors, but neither does it add any new ones,
as far as I can see! However, we may need some more PPC fixes and updated
CI coverage to catch these issues sooner in future.

/Bruce