FFI

The Foreign Function Interface (FFI) enables calling code written in other programming languages.

TODO: Does this work with any languages other than C?

TODO: Add detail on this.

Example

Let’s create a shared library containing simple C functions.

Here is the file mylib.c:

#include <stdio.h>

void hello() {
    printf("Hello from a shared library!\n");
}

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

To build a shared library from this, enter the command clang -dynamiclib -o libmylib.dylib mylib.c.

TODO: Learn how to implement these.