Linker command failed with exit code 1 error in Xcode project

Question

I was working on my project and suddenly after editing the code and compiling gave this error:

ld: warning: directory not found for option \'-
L/Use

Answer 1

You may be accidentally #import'ing a .m file instead of a .h. Use Cmd+Shift+F and search for ".m" (without quotes). It will most likely lie in one of the classes mentioned in the warning. If not, clean and run again.