--- /dev/null
+--- qt-x11-opensource-src-4.2.2/mkspecs/linux-g++-64/qmake.conf.multilib 2006-11-27 11:26:42.000000000 -0600
++++ qt-x11-opensource-src-4.2.2/mkspecs/linux-g++-64/qmake.conf 2007-02-26 15:01:02.000000000 -0600
+@@ -14,6 +14,8 @@
+ QMAKE_CFLAGS = -m64
+ QMAKE_LFLAGS = -m64
+
++QMAKE_CFLAGS_RELEASE += -O2
++
+ include(../common/g++.conf)
+ include(../common/linux.conf)
+
+--- qt-x11-opensource-src-4.2.2/mkspecs/linux-g++-32/qmake.conf.multilib 2006-11-27 11:26:42.000000000 -0600
++++ qt-x11-opensource-src-4.2.2/mkspecs/linux-g++-32/qmake.conf 2007-02-26 15:01:34.000000000 -0600
+@@ -11,6 +11,8 @@
+ QMAKE_CFLAGS = -m32
+ QMAKE_LFLAGS = -m32
+
++QMAKE_CFLAGS_RELEASE += -O2
++
+ include(../common/g++.conf)
+ include(../common/linux.conf)
+ load(qt_config)
+--- qt-x11-opensource-src-4.2.2/mkspecs/linux-g++/qmake.conf.multilib 2006-11-27 11:26:42.000000000 -0600
++++ qt-x11-opensource-src-4.2.2/mkspecs/linux-g++/qmake.conf 2007-02-26 15:01:26.000000000 -0600
+@@ -8,6 +8,8 @@
+ QT += core gui
+ QMAKE_INCREMENTAL_STYLE = sublib
+
++QMAKE_CFLAGS_RELEASE += -O2
++
+ include(../common/g++.conf)
+ include(../common/linux.conf)
+ load(qt_config)