iOS开发中遇见的错误

-fembed-bitcode is not supported on versions of iOS prior to 6.0 问题，
解决方案：搜索 BITCODE 将 YES 改成 NO

Unsupported compiler 'com.apple.compilers.llvmgcc42' selected for architecture 'armv7’问题

解决方案：Change your compiler for C/C++/ObjectiveC Go to Build Settings->Build OPtions->compiler for C/C++/ObjectiveC; select Default(Apple LLVM7.0)

Undefined symbols for architecture arm64 问题，

解决方案：build active architecture only 设置成Yes出错,设置成NO;