Cocos2d 3.2.1可以在Xcode 6上以调试模式运行而不是在发布模式下运行

Question

我下载了cocos2d 3.2.1.zip并在xcode 6上运行它。 调试模式很好，但发布模式根本不行。 我收到以下错误

Undefined symbols for architecture armv7:
  "_uncompress", referenced from:
      _ccInflateCCZFile in libcocos2d.a(ZipUtils.o)
  "_gzopen", referenced from:
      _ccInflateGZipFile in libcocos2d.a(ZipUtils.o)
  "_gzread", referenced from:
      _ccInflateGZipFile in libcocos2d.a(ZipUtils.o)
  "_gzclose", referenced from:
      _ccInflateGZipFile in libcocos2d.a(ZipUtils.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我确信它与项目设置有关。有谁知道如何解决它？