Hello, I am facing a similar error with clang, I am also using the M1 macbook ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation) my code is #include <cstdio> #include <iostream> using namespace std; int main() {   cout << "Hello World!!!" << endl;   int v = 10;   return 0; }; I tried what was suggested by eskimo. His code runs fine for me and I get file a.out a.out: Mach-O 64-bit executable arm64 but I am unable to run the simple Hello World program. I am a beginner at C++ Could someone please help? Thanks in advance