Re: [dpdk-dev] [PATCH v2] build: mention machine=default and its use in documentation

[Thomas Monjalon <thomas@monjalon.net>]

14/01/2019 14:41, Luca Boccassi:
> Document the new value, as it's useful for distributions and users
> who need to use a stable baseline -march
> 
> Signed-off-by: Luca Boccassi <bluca@debian.org>
> Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
> ---
> +NOTE: machine=default will use the minimum required -march on all architectures
> +regardless of the capabilities of the machine where the build is happening.

This option is not really selecting the minimum but something which works
on every flavours of the CPU architecture.
For instance, on ARM it can select a cacheline of 128B to make it work
with 64B and 128B micro-architectures.

After discussing with Bruce and Luca I was convinced that "default"
is not a good name, and "machine=any" would be better.
The name "default" may also refer, in some contexts, to the config
of the basic/standard CPU design.
Even worst, "default" is not the default machine in DPDK...

Today I am not sure what is the best meaningful name,
and I tend to think that "default" is well understood by everyone.
So I am OK to apply this patch, but please replace
	"minimum required -march"
by
	"config working"
or something similar, thanks.