Index: boost_1_36_0/tools/build/v2/tools/vacpp.jam
===================================================================
--- boost_1_36_0.orig/tools/build/v2/tools/vacpp.jam	2008-09-02 19:55:36.000000000 -0400
+++ boost_1_36_0/tools/build/v2/tools/vacpp.jam	2008-09-02 19:55:42.000000000 -0400
@@ -60,7 +60,10 @@
 # Enable 64-bit memory addressing model
 flags vacpp CFLAGS <address-model>64 : -q64 ;
 flags vacpp LINKFLAGS <address-model>64 : -q64 ;
-flags vacpp ARFLAGS <address-model>64 : -X 64 ;
+if [ os.name ] = AIX
+{
+    flags vacpp ARFLAGS <address-model>64 : -X 64 ;
+}
 
 # Use absolute path when generating debug information
 flags vacpp CFLAGS <debug-symbols>on : -g -qfullpath ;