On Tue, Oct 27, 2020 at 08:07:01PM -0700, Joelle van Dyne wrote: > macOS 11/iOS 14 added preadv/pwritev APIs. Due to weak linking, configure > will succeed with CONFIG_PREADV even when targeting a lower OS version. We > therefore need to check at run time if we can actually use these APIs. > > Signed-off-by: Joelle van Dyne <j...@getutm.app> > --- > block/file-posix.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+)
What happens when preadv() is called prior to macOS 11/iOS 14? If I understand correctly the runtime check is preferrable because otherwise a binary compiled on recent macOS/iOS would ship with preadv() support but fail when executed on an older macOS/iOS?
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