extconf.rb

# mkmf: http://ruby-doc.org/stdlib/libdoc/mkmf/rdoc/index.html
require 'mkmf'

# While looking at extconf.rb examples, I yoinked this... Forgetting who I snagged it from.
def command(cmd)
  $stderr.puts "execute '#{cmd}' ..."
  raise(RuntimeError, cmd) unless system(cmd)
  $stderr.puts "execute '#{cmd}' done"
end

# Name your extension
extension_name = 'Fraction'

# Set your target name
dir_config(extension_name)

# Compilation Flags. Not absolutely necessary, but may save you a headache.
$DLDFLAGS << " -framework Foundation"

# Do the work
create_makefile(extension_name)

command "mv -f Makefile Makefile.bak"
command "sed -e 's/^\.c\.o:$/\.m\.o:/' Makefile.bak > Makefile"
command "rm Makefile.bak"