Willani

Willani is a self-hosted compiler for the C programming language inspired by Compiler book. It makes AT&T syntax assembly language code for the machine of Linux on x86_64.

Setup

Linux

$ git clone https://github.com/basd4g/willani.git
$ cd willani
$ make test   # Run test.
$ ./self.sh # Build 3rd generation compiler

macOS

$ git clone https://github.com/basd4g/willani.git
$ cd willani
$ ./docker.sh pull
$ ./docker.sh sh
# run interactive shell on a docker container.
$ make test   # Run test.

Demo

Now, willani can compile such as the following code.

int fibonacci(int n);

int main () {
  return fibonacci(10);
}

int fibonacci(int n) {
  if ( n <= 1 ) {
    return n;
  }
  return n + fibonacci(n-1);
}

You can run the code by executing the following commands on a Linux machine.

$ git clone https://github.com/basd4g/willani.git
$ cd willani
$ make
$ echo 'int fibonacci(int n); int main () { return fibonacci(10); } int fibonacci(int n) { if ( n <= 1 ) { return n; } return n + fibonacci(n-1); }' > fib.c
$ ./willani fib.c -o fib.s
$ gcc --static fib.s -o fib.out
$ ./fib.out
$ echo "$?"