Not all CPU architectures support these instructions.
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,8 +92,6 @@
   SET(CMAKE_THREAD_PREFER_PTHREAD ON)
   FIND_PACKAGE(Threads REQUIRED)
   ADD_COMPILE_FLAG("-std=c++11")
-  ADD_COMPILE_FLAG("-msse2")
-  ADD_COMPILE_FLAG("-mfpmath=sse")
   ADD_COMPILE_FLAG("-Wall")
   ADD_COMPILE_FLAG("-Werror")
   ADD_COMPILE_FLAG("-Wextra")