diff -r 64db8473f3ab -r d0c5de7c5396 SConstruct
--- a/SConstruct	Mon Jun 18 15:43:12 2012 -0400
+++ b/SConstruct	Thu Jun 21 00:33:50 2012 +0100
@@ -580,7 +580,7 @@
     Exit(1)
 
 # Check for appropriate SWIG version
-swig_version = readCommand(('swig', '-version'), exception='').split()
+swig_version = readCommand([main['SWIG'], '-version'], exception='').split()
 # First 3 words should be "SWIG Version x.y.z"
 if len(swig_version) < 3 or \
         swig_version[0] != 'SWIG' or swig_version[1] != 'Version':