diff -up rpm-4.9.1.3/macros.in.power64 rpm-4.9.1.3/macros.in
--- rpm-4.9.1.3/macros.in.power64	2012-05-03 13:34:17.000000000 +0200
+++ rpm-4.9.1.3/macros.in	2012-05-03 13:45:44.002388724 +0200
@@ -1038,6 +1038,10 @@ done \
 %arm	armv3l armv4b armv4l armv4tl armv5tel armv5tejl armv6l armv7l armv7hl armv7hnl
 
 #------------------------------------------------------------------------------
+# arch macro for all supported PowerPC 64 processors
+%power64	ppc64 ppc64p7
+
+#------------------------------------------------------------------------------
 # arch macro for all supported Sparc processors
 %sparc sparc sparcv8 sparcv9 sparcv9v sparc64 sparc64v