Readme.md

Fun for Fun

Welcome to fun for fun, a functional programming language compiler made for fun!

Build the project

To build the project, you need to install the dependencies using opam:

opam install . --deps-only --with-test --with-doc

Then, build the project using dune:

dune build

Finally, install the compiler and runtime. This will install the compiler ff and a compiler wrapper ffw in ~/.opam/<ocaml-version>/bin/, and the runtime library in ~/.opam/<ocaml-version>/share/fun4fun/.

dune install

Hello World

Create a hello world program hello.fun to test if compiler installed successfully.

external println_str : string -> unit = "ff_builtin_println_str"

let _ = println_str "Hello World!"

Compile and Run

1. Compile to C++ Source:

Use the previously installed compiler to generate a C++ source hello.cpp from hello.fun.

ff hello.fun -o hello.cpp

2. Compile C++ Source:

Use g++ to compile generated c++ source and link it to runtime library.

g++ hello.cpp -I $(opam var share)/fun4fun $(opam var share)/fun4fun/libfun_rt.a -o hello

3. Run the Executable:

Execute the compiled program.

./hello

and check the output.

Hello World!

Use Compiler Wrapper

Alternatively, you can use the compiler wrapper ffw to automatically call g++:

ffw hello.fun

This will generate an executable program hello.fun.out in current directly.

Run it:

./hello.fun.out

and check the output:

Hello World!