вт, 11 янв. 2022 г., 5:10 AM Jason Wang <jasowang@redhat.com>:
On Tue, Jan 11, 2022 at 12:49 AM Peter Maydell
<peter.maydell@linaro.org> wrote:
>
> On Mon, 10 Jan 2022 at 03:40, Jason Wang <jasowang@redhat.com>
wrote:
> >
> > The following changes since commit
df722e33d5da26ea8604500ca8f509245a0ea524:
> >
> > Merge tag 'bsd-user-arm-pull-request' of
gitlab.com:bsdimp/qemu into staging (2022-01-08 09:37:59 -0800)
> >
> > are available in the git repository at:
> >
> > https://github.com/jasowang/qemu.git tags/net-pull-request
> >
> > for you to fetch changes up to
5136cc6d3b8b74f4fa572f0874656947a401330e:
> >
> > net/vmnet: update MAINTAINERS list (2022-01-10 11:30:55 +0800)
> >
> > ----------------------------------------------------------------
> >
> > ----------------------------------------------------------------
>
> Fails to build on OSX Catalina:
>
> ../../net/vmnet-common.m:165:10: error: use of undeclared identifier
> 'VMNET_SHARING_SERVICE_BUSY'
> case VMNET_SHARING_SERVICE_BUSY:
> ^
>
> This constant only got added in macOS 11.0. I guess that technically
> our supported-platforms policy only requires us to support 11
(Big Sur)
> and 12 (Monterey) at this point, but it would be nice to still
be able
> to build on Catalina (10.15).
Yes, it was only supported by the vmnet framework starting from
Catalyst according to
https://developer.apple.com/documentation/vmnet?language=objc.
Yes, there are some symbols from macOS >= 11.0 new backend
uses, not only this one, ex. vmnet_enable_isolation_key:
https://developer.apple.com/documentation/vmnet/vmnet_enable_isolation_key
>
> (Personally I would like Catalina still to work at least for a
little
> while, because my x86 Mac is old enough that it is not supported by
> Big Sur. I'll have to dump it once Apple stops doing security
support
> for Catalina, but they haven't done that quite yet.)
Sure, broken builds on old macOSes are bad. For this case I think
it's enough to disable vmnet for macOS < 11.0 with a probe while
configure build step. Especially given that Apple supports ~three
latest macOS versions, support for Catalina is expected to end
in 2022, when QEMU releases 7.0.