这个问题快把我逼疯了,我不知道怎么解决它。

    Undefined symbols for architecture armv7:
  "_deflateEnd", referenced from:
      -[ASIDataCompressor closeStream] in ASIDataCompressor.o
  "_OBJC_CLASS_$_ASIDataDecompressor", referenced from:
      objc-class-ref in ASIHTTPRequest.o
  "_deflate", referenced from:
      -[ASIDataCompressor compressBytes:length:error:shouldFinish:] in ASIDataCompressor.o
  "_deflateInit2_", referenced from:
      -[ASIDataCompressor setupStream] in ASIDataCompressor.o
ld: symbol(s) not found for architecture armv7
collect2: ld returned 1 exit status
Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1

我认为这与:

ld: symbol(s) not found for architecture armv7

但是我添加了:libz.1.2.3。Dylib并没有帮助,有人有什么想法吗?


当前回答

常见的原因

导致“架构armv7中未定义的符号”的常见原因有:

You import a header and do not link against the correct library. This is common, especially for headers for libraries like QuartzCore since it is not included in projects by default. To resolve: Add the correct libraries in the Link Binary With Libraries section of the Build Phases. If you want to add a library outside of the default search path you can include the path in the Library Search Paths value in the Build Settings and add -l{library_name_without_lib_and_suffix} (eg. for libz.a use -lz) to the Other Linker Flags section of Build Settings. You copy files into your project but forgot to check the target to add the files to. To resolve: Open the Build Phases for the correct target, expand Compile Sources and add the missing .m files. If this is your issue please upvote Cortex's answer below as well. You include a static library that is built for another architecture like i386, the simulator on your host machine. To resolve: If you have multiple library files from your libraries vendor to include in the project you need to include the one for the simulator (i386) and the one for the device (armv7 for example). Optionally, you could create a fat static library that contains both architectures.


最初的回答:

您没有链接到正确的libz文件。如果你右键点击该文件并在finder中显示它的路径应该在iOS sdk文件夹中的某个地方。这是我的例子

/开发/平台/ iPhoneOS.platform /开发/ sdk / iPhoneOS4.3.sdk / usr / lib

我建议删除引用,然后在目标的构建阶段Link Binary With Libraries部分重新添加它。

其他回答

我也有同样的问题。我尝试了答案列表中的每一种方法,但最终我的问题是: 我正在使用openCV,所以我需要在我的代码中结合c++代码。要做到这一点,你应该将使用objective-c和c++的文件更改为.mm 我没有改变一个文件,这个文件没有连接到c++代码,但我必须改变它。

我在安装shareKit时遇到了这个问题。它可以在模拟器中运行,但不能在设备上运行。我从其他链接器标志中删除了-all_load,一切都在模拟器和iphone设备中正常工作。

我在iphone5s上运行app时遇到了这个问题,通过添加arm64到架构解决了这个问题。

这解决了我的问题:我正在使用的依赖不支持armv7。所以我别无选择,只能把它切除。Armv7只用于非常老的iphone(比如iphone 4)。

点击“构建设置/全部” 设置“有效架构”为“arm64 arm64e”

我有这个警告,当在另一个类的.h文件中写两个类时,但忘记在.m文件中写这个类的实现。