iOS alignment lost in merging tentative definition

问题

when I archive my iOS app I get the following errors:

ld: warning: alignment lost in merging tentative definition _isDragging
ld: warning: alignment lost in merging tentative definition _isLoading

Could someone please tell me what's wrong and where should I look for...

Thanks!

回答1:

I just ran into this same issue. I'm assuming that _isDragging and _isLoading are global variables that you declared somewhere. If that is so, make sure you declare both as extern in your .h file thusly:

MyFile.h

extern bool _isDragging;
extern bool _isLoading;

MyFile.m

bool _isDragging = false;
bool _isLoading = false;`

Hope this helps!

来源：https://stackoverflow.com/questions/8743262/ios-alignment-lost-in-merging-tentative-definition