我尝试更改4到5的应用程序，在构建期间它显示如下错误 .
任何人都可以为此提供解决方案吗？
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_FlurryAPI", referenced from:
objc-class-ref in NewsViewController.o
objc-class-ref in NewsDetailViewController.o
objc-class-ref in ArchiveIndvidualView.o
objc-class-ref in ArchiveMenuViewController.o
objc-class-ref in ReleaseDetailView.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)