您没有包含这些函数的libz.dylib。选择项目节点，选择目标，进入Build Phases选项卡，展开Link Binaries With Libraries，添加libz.dylib，然后重试。

You didn't include the libz.dylib where those functions are. Select the project node, select your target, go to the Build Phases tab, expand "Link Binaries With Libraries", add libz.dylib, and try again.