--- a/make-rules/shared-macros.mk	Wed Sep 18 09:05:51 2013 -0700
+++ b/make-rules/shared-macros.mk	Mon Sep 23 10:03:20 2013 -0700
@@ -280,6 +280,7 @@
 RUBY_VERSION = 1.8
 RUBY.1.8 =     /usr/bin/ruby18
 VENDOR_RUBY =  /usr/ruby/$(RUBY_VERSION)/lib/ruby/vendor_ruby/$(RUBY_VERSION)
+RUBY =         $(RUBY.$(RUBY_VERSION))
 
 PYTHON_VENDOR_PACKAGES.32 = /usr/lib/python$(PYTHON_VERSION)/vendor-packages
 PYTHON_VENDOR_PACKAGES.64 = /usr/lib/python$(PYTHON_VERSION)/vendor-packages/64