puts "CC = #{RbConfig::CONFIG['CC']}"
puts "CC_VERSION = #{RbConfig::CONFIG['CC_VERSION']}"
puts "CC_VERSION_MESSAGE = #{RbConfig::CONFIG['CC_VERSION_MESSAGE']}"
puts "arch = #{RbConfig::CONFIG['arch']}"
puts "host = #{RbConfig::CONFIG['host']}"
puts "host_alias =#{RbConfig::CONFIG['host_alias']}"
puts "host_cpu = #{RbConfig::CONFIG['host_cpu']}"
puts "host_os = #{RbConfig::CONFIG['host_os']}"
puts "host_vendor = #{RbConfig::CONFIG['host_vendor']}"
puts "\n----------------------------------------\n"
RbConfig::CONFIG.sort.each do |key, value|
   puts "#{key} = #{value}"
end
