Ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Explanation:

The given error message:

ld: symbol(s) not found for architecture x86_64

indicates that some symbols (functions or variables) are missing during the linking process for the specified architecture (x86_64).

The error message:

clang: error: linker command failed with exit code 1 (use -v to see invocation)

states that the linker command failed with exit code 1, which means there was an error during the linking process. Adding the option -v can provide more detailed information about the error.

Example:

Let’s consider a simple C program that uses a function called sum defined in another source file:

main.c:

#include <stdio.h>

// Function prototype
int sum(int a, int b);

int main() {
  int result = sum(3, 5);
  printf("Sum: %d\n", result);
  return 0;
}

sum.c:

int sum(int a, int b) {
  return a + b;
}

When compiling and linking the program using the command clang main.c sum.c -o program, the following error may occur:

ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

This error occurs because the linker is unable to find the implementation of the sum function during the linking process. To fix this error, we need to provide the linker with the necessary object file containing the implementation:

clang main.c sum.c -o program

By compiling and linking the source files together, the error should be resolved, and the executable program will be generated.