--- zfs-0.6.3/lib/libspl/include/sys/isa_defs.h~	2015-03-01 13:37:53.000000000 +0000
+++ zfs-0.6.3/lib/libspl/include/sys/isa_defs.h	2015-03-01 13:38:21.366669848 +0000
@@ -41,7 +41,7 @@
 #if !defined(__x86)
 #define	__x86
 #endif
 
-#if !defined(_LP64)
+#if !defined(_LP64) && !defined(_ILP32)
 #define	_LP64
 #endif