Hi Paolo, as python and meson are required dependencies to building qemu
now,
can we detecting python/meson at the very begining of configure,
even before the --help parameter.

On Wed, Jan 13, 2021 at 6:08 AM Paolo Bonzini <pbonzini@redhat.com> wrote:
>
> On 13/01/21 11:31, Daniel P. Berrangé wrote:
> >>   meson-buildoptions.json                 | 717
++++++++++++++++++++++++
> > I'm not a fan of seeing this file introduced as it has significant
> > overlap with meson_options.txt.    I feel like the latter has enough
> > information present to do an acceptable job for help output. After
> > all that's sufficient if we were using meson directly.
>
> Sorry, I missed this remark.  meson-buildoptions.json is not
> hand-written.  It is the result of Meson's own parsing meson_options.txt
> exported as JSON.
>
> In the commit message "because we parse command-line options before
> meson is available, the introspection output is stored in the source
> tree.  This is the reason for the unattractive diffstat; the number of
> JSON lines added is higher than the number of configure lines removed.
> Of course the latter are code that must be maintained manually and the
> former is not".
>
> Paolo
>
>


--
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    sincerely,
Yonggang Luo