--- SConstruct
+++ SConstruct
@@ -117,6 +117,8 @@
                   None),
   RawListVariable('CPPFLAGS', "Extra flags for the C preprocessor "
                   "(space separated)", None), 
+  RawListVariable('AR', "Command name or path of the static library archiver", None),
+  RawListVariable('RANLIB', "Command name or path of the archive indexer", None),
   )
 
 if sys.platform == 'win32':