Li Hao 41e3931b04 Fix build failures of new APIs on old macOS SDK
New APIs supported from macOS 11.0 cannot build successfully on macOS
10.15, even use @available to control whether a declaration is
available on target platform, but does not work in conditionally
compiling.

Update building.md to require the macOS 11.0 SDK.

Bug: dawn:1054
Change-Id: If22ada959c0c1ef41826f78bd337b912772000b1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/61021
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
2021-08-18 16:16:57 +00:00
..
2021-03-24 20:29:42 +00:00