scons: Try to support building 64bit binaries on 32bit windows.
diff --git a/SConstruct b/SConstruct
index a2c2047..3908840 100644
--- a/SConstruct
+++ b/SConstruct
@@ -132,7 +132,7 @@
 #
 
 # Create host environent
-if env['platform'] != common.host_platform:
+if env['crosscompile'] and env['platform'] != 'embedded':
     host_env = Environment(
         options = opts,
         # no tool used