[dpdk-stable] [PATCH v2] config/ppc: ignore gcc 11 psabi warnings

[David Christensen]

> Suppress the gcc warning "note: the layout of aggregates containing
> vectors with 4-byte alignment has changed in GCC 5" on POWER systems
> by setting "-Wno-psabi".  Warning was originally added to gcc in
> commit https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=9832651 to warn
> of the vector alignment changes introduced in GCC 5.  Older gcc
> versions forced vector alignment to 16 bytes due to requirements for
> POWER 6 and earlier CPUs, but these restrictions don't apply to CPUs
> supported by DPDK.
> 
> Bugzilla ID: 739
> 
> Signed-off-by: David Christensen <drc at linux.vnet.ibm.com>
> ---
> v2:
> - update copyright year
> - rebase for 21.11-rc0
> ---

David M,

Any chance of getting this approved in the 21.11 cycle?  Patch was 
originally submitted on 6/23, is only applicable to PPC architecture, 
and has no functional impact because it only disables warnings.  The 
failing test build on Windows reported at

http://mails.dpdk.org/archives/test-report/2021-September/216596.html

cannot in any way be caused by this patch.  We hope to have all changes 
in place to support POWER10 in this DPDK release so we're constantly 
testing with new compiler versions which add P10 support.

Dave