--- a/rakelib/setup.rake	Thu Jun 21 08:07:41 2018 +0000
+++ b/rakelib/setup.rake	Tue Jun 26 21:50:57 2018 +0100
@@ -11,17 +11,15 @@
 
 
 
-# Guess the value of BUILD_TARGET for system on which we're currently running.
-# Think of this as of `config.guess` script used in autotools.
-# Returns the BUiLD_TARGET in form of GNU target triplet, such as 
-# `x86_64-pc-linux-gnu`
+# Guess the value of BUILD_TARGET for system on which we're currently 
+# running in form of GNU target triplet, such as `x86_64-pc-linux-gnu`.
+# Essentially a wrapper for config.guess used with autotools. 
 def build_target_guess()
-  RbConfig::CONFIG['target'] # Can't believe it's so easy...
+  return `./config.guess`.chop()
 end
 
 unless defined? BUILD_TARGET; BUILD_TARGET = ENV['BUILD_TARGET'] || build_target_guess(); end
 
-
 unless defined? TOOLCHAIN
   if ENV.has_key? 'TOOLCHAIN'
     TOOLCHAIN = ENV['TOOLCHAIN']