diff -up qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-32/qmake.conf.multilib_optflags qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-32/qmake.conf
--- qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-32/qmake.conf.multilib_optflags 2012-11-10 13:03:34.000000000 -0600
+++ qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-32/qmake.conf 2012-11-13 13:21:06.055794647 -0600
@@ -9,6 +9,8 @@ QMAKE_INCREMENTAL_STYLE = sublib
QMAKE_CFLAGS = -m32
QMAKE_LFLAGS = -m32
+QMAKE_CFLAGS_RELEASE += -O2
+
include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)
diff -up qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-64/qmake.conf.multilib_optflags qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-64/qmake.conf
--- qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-64/qmake.conf.multilib_optflags 2012-11-10 13:03:34.000000000 -0600
+++ qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++-64/qmake.conf 2012-11-13 13:21:06.056794635 -0600
@@ -12,6 +12,8 @@ QMAKE_INCREMENTAL_STYLE = sublib
QMAKE_CFLAGS = -m64
QMAKE_LFLAGS = -m64
+QMAKE_CFLAGS_RELEASE += -O2
+
include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)
diff -up qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++/qmake.conf.multilib_optflags qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++/qmake.conf
--- qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++/qmake.conf.multilib_optflags 2012-11-10 13:03:34.000000000 -0600
+++ qtbase-opensource-src-5.0.0-beta2/mkspecs/linux-g++/qmake.conf 2012-11-13 13:21:55.171189736 -0600
@@ -6,6 +6,8 @@ MAKEFILE_GENERATOR = UNIX
CONFIG += incremental gdb_dwarf_index
QMAKE_INCREMENTAL_STYLE = sublib
+QMAKE_CFLAGS_RELEASE += -O2
+
include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)