Question

My code is identical to this question I asked earlier so there’s no point in duplicating it here

This is the error I am getting:

Undefined symbols for architecture x86_64:
  "_stdscr", referenced from:
      _screen_init in screen.o
  "_werase", referenced from:
      _screen_init in screen.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I’ve had this error in the past and I feel like it has something to do with a duplicate function name or something, but I have no idea how to debug this.

EDIT:

After adding the libncurses.dylib file to my project, the errors discussed above have disappeared, but a new error has emerged when I call screen_init(); in my main.cpp:

// main.cpp

#include "screen.h"

int main(){
   screen_init();
}

// new error

Undefined symbols for architecture x86_64:
  "screen_init()", referenced from:
      _main in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Pretty much the same error except now in my main. Is there another library I am missing? These errors are very mysterious and not very helpful.

Answer 1

I guess you need to add the library to your link phase, if you are going with XCode you should add it in project details:

• choose project details
• choose build phases tab
• open link binary with libraries part
• click the plus symbol
• add libncurses.dylib to your project.