diff -ruN qt-x11-opensource-src-4.3.1.orig/src/corelib/arch/qatomic_powerpc.h qt-x11-opensource-src-4.3.1/src/corelib/arch/qatomic_powerpc.h
--- qt-x11-opensource-src-4.3.1.orig/src/corelib/arch/qatomic_powerpc.h	2007-08-07 15:08:39.000000000 +0200
+++ qt-x11-opensource-src-4.3.1/src/corelib/arch/qatomic_powerpc.h	2007-08-22 21:20:24.153357369 +0200
@@ -44,7 +44,7 @@
 QT_BEGIN_HEADER
 
 #if defined(Q_CC_GNU)
-#ifdef __64BIT__
+#ifdef __powerpc64__
 #  define LPARX "ldarx"
 #  define CMPP  "cmpd"
 #  define STPCX "stdcx."