在 iOS 中导入 zlib 时出错:找不到符号 collect2:ld [英] error when import zlib in iOS: symbol(s) not found collect2: ld

问题描述

我在我的 iphone 应用程序中包含了 <zlib.h> 以及我正在模拟 Brad Larson 提供的 Molecules 示例代码的源代码，但是，当我构建项目时，它返回如下错误.谁能帮我指出这是图书馆链接问题还是我遗漏了什么?

I have included <zlib.h> in my iphone application and the source code I was mocking up the sample code of Molecules provided by Brad Larson, however, when I build the project, it returns the error as below. Can anyone point out for me whether this is a library linking problem or am I missing something else?

"_deflate", referenced from: -[NSData(Gzip) gzipDeflate] in NSData+Gzip.o "_inflateEnd", 
referenced from: -[NSData(Gzip) initWithGzippedData:] in NSData+Gzip.o "inflateInit2", 
referenced from: -[NSData(Gzip) initWithGzippedData:] in NSData+Gzip.o "_inflate", 
referenced from: -[NSData(Gzip) initWithGzippedData:] in NSData+Gzip.o "_deflateEnd", 
referenced from: -[NSData(Gzip) gzipDeflate] in NSData+Gzip.o "deflateInit2", referenced 
from: -[NSData(Gzip) gzipDeflate] in NSData+Gzip.o ld: symbol(s) not found collect2: ld 
returned 1 exit status

推荐答案

在 Target 的 Build Settings 选项卡中，向下滚动到 Other Linker Flags 部分并确保 -lz 在该字段中.这将链接到内置的 zlib，您的错误应该会消失.

In your Target's Build Settings tab, scroll down to the Other Linker Flags section and make sure -lz is in the field. This will link against the built-in zlib, and your error should go away.

更改链接器标志后，您必须在再次构建之前从 Product 菜单中选择 Clean.

After changing the Linker Flags you must select Clean from the Product menu before building again.

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