modified CMAKELIST for avx and sse2

CMakeLists.txt

@@ -17,12 +17,14 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native -mtune=native -O3")
 
 if(USE_AVX)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DUSE_AVX")
-elseif(USE_SSE)
+endif(USE_AVX)
+
+if(USE_SSE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.2 -DUSE_SSE")
     if(USE_SSE2)
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DUSE_SSE2")
     endif(USE_SSE2)
-endif(USE_AVX)
+endif(USE_SSE)
 
 include_directories(./include/)