+--- geos-3.3.8/macros/ruby.m4~ 2013-07-14 21:24:58.543846706 +0200
++++ geos-3.3.8/macros/ruby.m4 2013-07-14 21:34:50.456329482 +0200
+@@ -33,7 +33,7 @@
+ RUBY_LIB_DIR=`$RUBY -rrbconfig -e 'puts Config::CONFIG[["libdir"]]'`
+
+ dnl Get Ruby extensions directory
+- RUBY_EXTENSION_DIR=`$RUBY -rrbconfig -e 'puts Config::CONFIG[["sitearchdir"]]'`
++ RUBY_EXTENSION_DIR=`$RUBY -rrbconfig -e 'puts Config::CONFIG[["vendorarchdir"]]'`
+
+ dnl Get Ruby shared library name, this does not include the lib prefix or extension name
+ RUBY_SO_NAME=`$RUBY -rrbconfig -e 'puts Config::CONFIG[["RUBY_SO_NAME"]]'`