Re: [PATCH v3] build: update DPDK to use C11 standard

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

+David Christensen

On Tue, Aug 01, 2023 at 01:47:19PM +0000, Ali Alnubani wrote:
> > -----Original Message-----
> > From: Bruce Richardson <bruce.richardson@intel.com>
> > Sent: Tuesday, August 1, 2023 4:22 PM
> > To: Ali Alnubani <alialnu@nvidia.com>
> > Cc: David Marchand <david.marchand@redhat.com>; Patrick Robb
> > <probb@iol.unh.edu>; Tyler Retzlaff <roretzla@linux.microsoft.com>;
> > dev@dpdk.org; Morten Brørup <mb@smartsharesystems.com>; NBU-
> > Contact-Thomas Monjalon (EXTERNAL) <thomas@monjalon.net>
> > Subject: Re: [PATCH v3] build: update DPDK to use C11 standard
> > 
> > On Tue, Aug 01, 2023 at 12:42:36PM +0000, Ali Alnubani wrote:
> > <snip>
> > >
> > > On Ubuntu 20.04 while cross compiling for ppc64le with powerpc64le-linux-
> > gnu-gcc 9.4, I see:
> > >
> > > [..]
> > > lib/acl/acl_run_altivec.h:44:16: error: two or more data types in declaration
> > specifiers
> > > [..]
> > > lib/acl/acl_run_altivec.h:44:2: error: use of boolean types in AltiVec types is
> > invalid
> > > [..]
> > > error: incompatible types when assigning to type '__vector unsigned char'
> > {aka '__vector(16) unsigned char'} from type '__vector __bool int' {aka
> > '__vector(4) __bool int'}
> > > [..]
> > > lib/acl/acl_run_altivec.h:66:4: error: invalid parameter combination for
> > AltiVec intrinsic '__builtin_vec_sel'
> > > [..]
> > >
> > Hi Ali,
> > 
> > where can I get the full log for this error? Is it recorded in patchwork
> > under a particular test set? I see compile runs for loongarch and
> > aarch(64), but nothing listed for PPC.
> 
> Hello Bruce,
> 
> I run this build internally. Attaching build log with more info about the environment.
> 
> Note: I'm using an out-of-tree cross file because the in-tree one doesn't set binaries.pkgconfig.

<snip>

> In file included from ../../root/dpdk/lib/acl/acl_run_altivec.c:6:
> ../../root/dpdk/lib/acl/acl_run_altivec.h: In function 'resolve_priority_altivec':
> ../../root/dpdk/lib/acl/acl_run_altivec.h:44:16: error: two or more data types in declaration specifiers
>    44 |  __vector bool int selector;
>       |                ^~~
> ../../root/dpdk/lib/acl/acl_run_altivec.h:44:2: error: use of boolean types in AltiVec types is invalid
>    44 |  __vector bool int selector;
>       |  ^~~~~~~~

I don't know anything about altivec, unfortunately, and the use of "bool
int" together looks very strange. Adding PPC maintainer to thread.

David, can you perhaps help out with these issues?

Thanks,
/Bruce