default.gembox

MRuby::GemBox.new do |conf|
  # Use standard Kernel#sprintf method
  conf.gem :core => "mruby-sprintf"

  # Use standard print/puts/p
  conf.gem :core => "mruby-print"

  # Use standard Math module
  conf.gem :core => "mruby-math"

  # Use standard Time class
#  conf.gem :core => "mruby-time"

  # Use standard Struct class
#  conf.gem :core => "mruby-struct"

  # Use Enumerable module extension
  conf.gem :core => "mruby-enum-ext"

  # Use String class extension
  conf.gem :core => "mruby-string-ext"

  # Use Numeric class extension
  conf.gem :core => "mruby-numeric-ext"

  # Use Array class extension
  conf.gem :core => "mruby-array-ext"

  # Use Hash class extension
  conf.gem :core => "mruby-hash-ext"

  # Use Range class extension
  conf.gem :core => "mruby-range-ext"

  # Use Proc class extension
  conf.gem :core => "mruby-proc-ext"

  # Use Symbol class extension
  conf.gem :core => "mruby-symbol-ext"

  # Use Random class
#  conf.gem :core => "mruby-random"

  # Use Object class extension
  conf.gem :core => "mruby-object-ext"

  # Use ObjectSpace class
  conf.gem :core => "mruby-objectspace"

  # Use Fiber class
  conf.gem :core => "mruby-fiber"

  # Use Enumerator class (require mruby-fiber)
  conf.gem :core => "mruby-enumerator"

  # Use Enumerable::Lazy class (require mruby-enumerator)
  conf.gem :core => "mruby-enum-lazy"

  # Use toplevel object (main) methods extension
  conf.gem :core => "mruby-toplevel-ext"

  # Generate mirb command
#  conf.gem :core => "mruby-bin-mirb"

  # Generate mruby command
#  conf.gem :core => "mruby-bin-mruby"

  # Generate mruby-strip command
  conf.gem :core => "mruby-bin-strip"

  # Use Kernel module extension
  conf.gem :core => "mruby-kernel-ext"

  # Use mruby-compiler to build other mrbgems
  # tu jest np.: mrb_load_string
#  conf.gem :core => "mruby-compiler"

end

file.c

#include <stdio.h>
#include "mruby.h"
#include <mruby/compile.h>

int main()
{
mrb_value c;
mrb_state *mrb = mrb_open();
FILE *kod;

 kod = fopen("test.rb", "r");
 c = mrb_load_file(mrb, kod);
 if (!mrb) { printf("Problemy z programem"); }
 fclose(kod);

 mrb_close(mrb);

return 0;
}

gistfile1.txt

#Why i can use Build.new('minimal') without default
MRuby::Build.new do |conf|
 toolchain :gcc
 conf.cc.flags << '-Os'
 conf.enable_test
 conf.gembox 'default' 
end

test.rb

#!/usr/bin/env ruby
# encoding: utf-8
File.open("zz",'w') do |f|
f.puts "LL"
end