--- CMakeLists.txt.orig	2015-08-28 22:32:38 UTC
+++ CMakeLists.txt
@@ -46,7 +46,10 @@ ELSE(WIN32)
   ADD_DEFINITIONS (-Wall  -Wextra)
   ADD_DEFINITIONS (-pthread)
 
-  SET( CMAKE_CXX_FLAGS "-fPIC -msse4.1")
+  SET( CMAKE_CXX_FLAGS -fPIC )
+  IF(USE_SSE41)
+    SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.1" )
+  ENDIF()
 ENDIF(WIN32)
 
 ## Choose build options
@@ -99,4 +102,3 @@ ADD_SUBDIRECTORY (src/SeExpr)
 ADD_SUBDIRECTORY (src/SeExprEditor)
 ADD_SUBDIRECTORY (src/doc)
 ADD_SUBDIRECTORY (src/demos)
-ADD_SUBDIRECTORY (src/tests)