Quick and dirty script for compiling a ruby file with mruby. Run it with ruby ./compile_mruby.rb my_mruby_file.rb

compile_mruby.rb

#!/usr/bin/env ruby
require 'fileutils'


def shell(cmd)
  puts "Running #{cmd}"
  `#{cmd}`
end

infile = ARGV[0]
name = ARGV[0][/^(.+)\.rb/, 1]
cdatafile = name + '.c'
cfile = name + '_launcher.c'
ofile = name + '_launcher.o'
execfile = name

shell %Q[../bin/mrbc -B#{name} #{infile}] # Produces cdatafile

File.open(cfile, 'w') do |f|
  f.puts <<-END
    #include "mruby.h"
    #include "mruby/irep.h"
    #include "mruby/proc.h"

    int main(void)
    {
      #{File.read cdatafile}

      /* new interpreter instance */
      mrb_state *mrb;
      mrb = mrb_open();


      /* read and execute compiled symbols */
      int n = mrb_read_irep(mrb, #{name});
      mrb_run(mrb, mrb_proc_new(mrb, mrb->irep[n]), mrb_top_self(mrb));

      mrb_close(mrb);

      return 0;
    }
  END
end


shell %Q{ gcc -I../src -I../include -c #{cfile} }
shell %Q{ gcc -o #{execfile} #{ofile} ../lib/libmruby.a }


FileUtils.rm ofile
FileUtils.rm cfile
FileUtils.rm cdatafile