IOS error diagnosis-linker command failed with exit code 1

IOS error diagnosis-linker command failed with exit code 1
After Xcode was recently upgraded, it was found that all previous projects could not be compiled, and different errors were reported, some of which were-fembed-bitcode is not supported on versions of iOS prior to 6.0 and some were: linker command failed with exit code 1 has been tried repeatedly and found a solution to the problem. Solution: select the project file, select the "Build Settings" tab on the right, and find "Build Options" --> "Enable Bitcode" in the long list of Build Settings ", change it from YES to NO. You can also enter Bitcode in the search location. Xcode will automatically list the "Enable Bitcode" option and change it from YES to NO.