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我正在构建一个应用程序,部署目标是 4.2。我需要使用 QuartzCore,但是当我尝试将其添加到“Link Binary With Libraries”时,我只能使用 5.0 SDK。
我可以使用 5.0 还是应该从某个地方获得 4.2 的 QuartzCore?