diff -up qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/jsruntime.pri.no_sse2 qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/jsruntime.pri

--- qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/jsruntime.pri.no_sse2	2013-12-08 11:10:19.000000000 -0600

+++ qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/jsruntime.pri	2013-12-12 11:30:36.763009499 -0600

@@ -91,7 +91,7 @@ HEADERS += \

 # Use SSE2 floating point math on 32 bit instead of the default

 # 387 to make test results pass on 32 and on 64 bit builds.

-linux-g++*:isEqual(QT_ARCH,i386) {

+linux-g++*:isEqual(QT_ARCH,i386):!no_sse2 {

     QMAKE_CFLAGS += -march=pentium4 -msse2 -mfpmath=sse

     QMAKE_CXXFLAGS += -march=pentium4 -msse2 -mfpmath=sse

 }

diff -up qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/qv4global_p.h.no_sse2 qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/qv4global_p.h

--- qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/qv4global_p.h.no_sse2	2013-12-08 11:10:19.000000000 -0600

+++ qtdeclarative-opensource-src-5.2.0/src/qml/jsruntime/qv4global_p.h	2013-12-12 11:32:21.555865718 -0600

@@ -45,6 +45,8 @@

 #include <QtCore/qglobal.h>

 #include <QString>

 #include <qtqmlglobal.h>

+// To get __SSE2__ defined when building with MSVC

+//#include <private/qsimd_p.h>

 #if defined(Q_CC_MSVC)

 #include <float.h>

@@ -70,7 +72,7 @@ inline double trunc(double d) { return d

 // White list architectures

-#if defined(Q_PROCESSOR_X86)

+#if defined(Q_PROCESSOR_X86) && defined(__SSE2__)

 #define V4_ENABLE_JIT

 #elif defined(Q_PROCESSOR_X86_64)

 #define V4_ENABLE_JIT