Function arret_compiler::gen_program

pub fn gen_program(
    options: Options<'_>, 
    linked_libraries: &[Arc<LinkedLibrary>], 
    program: &BuiltProgram, 
    output_file: &Path, 
    debug_source_loader: Option<&SourceLoader>
)

Generates code for the program with the given output type

codegen::initialise_llvm() must be called before this.