Re: [dpdk-dev] [dpdk-stable] [PATCH] build: mention -march in pkg-config description

[Thomas Monjalon <thomas@monjalon.net>]

> > > Applications need to at least match DPDK's -march option to build
> > > successfully due to some static inline functions in the public headers.
> > >
> > > This might cause problems, especially in distributions, so add a note
> > > in the pkg-config description.
> > >
> > > Fixes: a25a650be5f0 ("build: add infrastructure for meson and ninja builds")
> > > Cc: stable@dpdk.org
> > >
> > > Signed-off-by: Luca Boccassi <bluca@debian.org>
> > > ---
> > > At the moment there are no adversely affected applications in Debian and
> > > Ubuntu (collectd builds a separate shared object, and OVS/virtio-forwareder
> > > are stand-alone DPDK-specific binaries), but we thought that having an
> > > explicit notice would be good.
> > >
> > > --- a/meson.build
> > > +++ b/meson.build
> > > @@ -83,7 +83,9 @@ pkg.generate(name: meson.project_name(),
> > >  libraries: dpdk_libraries,
> > >  libraries_private: dpdk_drivers + dpdk_static_libraries +
> > >  ['-Wl,-Bdynamic'] + dpdk_extra_ldflags,
> > > -description: 'The Data Plane Development Kit (DPDK)',
> > > +description: '''The Data Plane Development Kit (DPDK).
> > > +Note that CFLAGS might contain an -march flag higher than typical baseline.
> > > +This is required for a number of static inline functions in the public
> > From Arm's perspective, this notice is really necessary for some extensions like LSE to work for performance.
> > Reviewed-by: Gavin Hu <gavin.hu@arm.com>
> > 
> No objection from me for more documentation.
> 
> Acked-by: Bruce Richardson <bruce.richardson@intel.com>

Applied, thanks