--- CMakeLists.txt.orig	2019-12-17 03:49:21 UTC
+++ CMakeLists.txt
@@ -158,8 +158,8 @@ if(CMAKE_COMPILER_IS_GNUCC OR "${CMAKE_CXX_COMPILER_ID
   string(REGEX REPLACE "-O3" "-Ofast" CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
   string(REGEX REPLACE "-O0" "-Og" CMAKE_C_FLAGS_DEBUG ${CMAKE_C_FLAGS_DEBUG})
   string(REGEX REPLACE "-O3" "-Ofast" CMAKE_C_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE})
-  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -ffp-contract=fast -mavx -mavx2 -msse3 -msse4.1 -msse4.2 -msse4a")
-  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -ffp-contract=fast -mavx -mavx2 -msse3 -msse4.1 -msse4.2 -msse4a")
+  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -ffp-contract=fast ${FREEBSD_SIMD}")
+  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -ffp-contract=fast ${FREEBSD_SIMD}")
 endif()
 
 if(OpenCV_FOUND)