the error above arises when i attempt to build an Xcode project , the details of the error appears below , i can't understand the reason of this error, or how to resolve it, please help, thanks.
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_MBProgressHUD", referenced from:
objc-class-ref in BasicViewController.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
You need to build MBProgressHUD for the simulator as well.