1 files changed, 57 insertions, 0 deletions
diff --git a/runruby.rb b/runruby.rb
new file mode 100755
index 0000000000..a175dcb9aa
--- /dev/null
+++ b/runruby.rb
@@ -0,0 +1,57 @@
+#!./miniruby
+
+while arg = ARGV[0]
+  break ARGV.shift if arg == '--'
+  /\A--([-\w]+)(?:=(.*))?\z/ =~ arg or break
+  arg, value = $1, $2
+  re = Regexp.new('\A'+arg.gsub(/\w+\b/, '\&\\w*')+'\z', "i")
+  case
+  when re =~ "srcdir"
+    srcdir = value
+  when re =~ "archdir"
+    archdir = value
+  when re =~ "extout"
+    extout = value
+  else
+    break
+  end
+  ARGV.shift
+end
+
+require 'rbconfig'
+config = Config::CONFIG
+
+srcdir ||= File.dirname(__FILE__)
+archdir ||= '.'
+
+ruby = File.join(archdir, config["RUBY_INSTALL_NAME"]+config['EXEEXT'])
+unless File.exist?(ruby)
+  abort "#{ruby} is not found.\nTry `make' first, then `make test', please.\n"
+end
+
+abs_archdir = File.expand_path(archdir)
+libs = [abs_archdir, File.expand_path("lib", srcdir)]
+if extout
+  abs_extout = File.expand_path(extout)
+  libs << abs_extout << File.expand_path(RUBY_PLATFORM, abs_extout)
+end
+config["bindir"] = abs_archdir
+ENV["RUBY"] = File.expand_path(ruby)
+ENV["PATH"] = [abs_archdir, ENV["PATH"]].compact.join(File::PATH_SEPARATOR)
+
+if e = ENV["RUBYLIB"]
+  libs |= e.split(File::PATH_SEPARATOR)
+end
+ENV["RUBYLIB"] = $:.replace(libs).join(File::PATH_SEPARATOR)
+
+libruby_so = File.join(abs_archdir, config['LIBRUBY_SO'])
+if File.file?(libruby_so)
+  if e = config['LIBPATHENV'] and !e.empty?
+    ENV[e] = [abs_archdir, ENV[e]].compact.join(File::PATH_SEPARATOR)
+  end
+  if /linux/ =~ RUBY_PLATFORM
+    ENV["LD_PRELOAD"] = [libruby_so, ENV["LD_PRELOAD"]].compact.join(' ')
+  end
+end
+
+exec ruby, *ARGV