Xcode gives Apple Mach-O linker error
Teaching a man (or women) how to fish:
Usually Mach-O Linker Error means you have not included a header file for a function you are using in your code.
Easiest way is to copy that function or method call and paste into Xcode quick search using shift+command+O. This will search all frameworks (and header files), find that function or method call and show you its location (the header in this case):
In this case, this call belongs to the Accelerate framework so on top of your file, enter:
#import <Accelerate/Accelerate.h>When doing quick search, you might have to get rid of leading underscore. In other words, search for vImageBoxConvolve_ARGB8888
Hope this helps
Google is your friend: someone else fixed this by adding the Accelerate framework to their project (and this does look like a framework error).
https://github.com/rnystrom/RNBlurModalView/issues/5
Make sure you also have the QuartzCore framework included as well, as that is also required by that library.
Apparently vImageBoxConvolve_ARGB8888() is not defined. See if the Accelerate framework is properly included in the project.