I noticed an issue with the new XCode 8, that makes it impossible to archive on XCode 7 with bitcode. So for example if I'm trying to develop a library on XCode 8, when using on Xcode 7 and enabling bitcode I'm getting this error:
Invalid bitcode version (Producer: '800.0.38.0_0' Reader: '703.0.29_0')
Is there any workaround for that when developing libraries on Xcode 8 (objective c)?