On Wed, 2018-11-14 at 12:34 +0100, Christian Ehrhardt wrote:
> Add the machine definition 'baseline' which is special compared
> to 'native' (most optimized for current system) or any explicit
> type (external entity has to decide on the type).
>
> It defaults to the per arch agreed common minimal baseline
> needed for DPDK to reasonable work.
>
> That might not be the most optimized, but the most portable
> version while still being able to support the CPU features
> required for DPDK.
>
> Going forward this can be bumped up by the DPDK project, but it
> can never be an invariant like 'native'.
>
> Distributions and other needing portable code are expected to
> define the machine as 'baseline'.
>
> Signed-off-by: Christian Ehrhardt <christian.ehrha...@canonical.com>
> ---
> config/meson.build | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/config/meson.build b/config/meson.build
> index 1af305f46..23f612457 100644
> --- a/config/meson.build
> +++ b/config/meson.build
> @@ -7,6 +7,27 @@ if meson.is_cross_build()
> else
> machine = get_option('machine')
> endif
> +
> +# machine type 'baseline' is special, it defaults to the per arch
> agreed common
> +# minimal baseline needed for DPDK.
> +# That might not be the most optimized, but the most portable
> version while
> +# still being able to support the CPU features required for DPDK.
> +# This can be bumped up by the DPDK project, but it can never be an
> +# invariant like 'native'
> +if machine == 'baseline'
> + if host_machine.cpu_family().startswith('x86')
> + # matches the old pre-meson build systems default
> + machine = 'corei7'
> + elif host_machine.cpu_family().startswith('arm')
> + machine = 'armv7a'
> + elif host_machine.cpu_family().startswith('aarch')
> + # arm64 manages defaults in config/arm/meson.build
> + machine = 'default'
> + elif host_machine.cpu_family().startswith('ppc')
> + machine = 'power8'
> + endif
> +endif
> +
> dpdk_conf.set('RTE_MACHINE', machine)
> machine_args = []
Acked-by: Luca Boccassi <bl...@debian.org>
--
Kind regards,
Luca Boccassi
