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*** does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE 

Xcode 7 运行项目报错:

错误1.  Undefined symbols for architecture armv7:

  "_compress2", referenced from:

      +[UMANDeflated deflatedDataPrefixedWith:level:source:] in libMobClickLibrary.a(UMDeflated.o)

ld: symbol(s) not found for architecture armv7

clang: error: linker command failed with exit code 1 (use -v to see invocation)

错误2.   *** does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target. for architecture armv7

由于Xcode自身的一些小问题,运行项目时一直报错 错误1的内容.然后我就检查项目友盟这个库的依赖呀.非常肯定的确认库已经导入而且在链接的二进制库里面.(就是build phases里面).然后就不断的重新导入clean了好多次还是不行.然后我就崩溃了..  后来把Xcode重启再次运行真正的错误终于浮出水面(毕竟Xcode是beta版).就是错误2的内容.原来是友盟的二进制库不支持bitcode.而Xcode默认是要支持bitcode的,而且如果支持的话,其中所有的二进制库和framework都必须包含bitcode.至于什么是bitcode,请看这里: http://blog.csdn.net/soindy/article/details/48518717     Bitcode

现在我们把bitcode关掉:  

does not contain bitcode. You must rebuild it with

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原文地址：http://www.cnblogs.com/feijietongti/p/5010819.html