--- CMakeLists.txt.orig	2021-09-09 15:34:30 UTC
+++ CMakeLists.txt
@@ -81,7 +81,7 @@ endif()
 
 set(SSE_FLAGS "")
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  set(SSE_FLAGS -mfpmath=sse -msse -msse2 -msse3 -mssse3)
+  set(SSE_FLAGS -mfpmath=sse ${OPT_SSE_SSE2} ${OPT_SSE_SSE3} ${OPT_SSE_SSSE3} ${OPT_SSE_SSE4} ${OPT_SSE_SSE41} ${OPT_SSE_SSE42} ${OPT_SSE_SSE4A})
 elseif(MSVC)
   # Win64 will add the flag automatically
   if(CMAKE_VS_PLATFORM_NAME STREQUAL "Win32")
@@ -102,7 +102,7 @@ else()
   check_cxx_compiler_flag("${SSE_FLAGS}" _compiler_supports_sse)
 
   if(_has_sse AND _has_sse2 AND _compiler_supports_sse)
-    set(FCL_TARGET_SUPPORT_X64_SSE ON)
+    set(FCL_TARGET_SUPPORT_X64_SSE ${FREEBSD_ENABLE_SSE})
   else()
     set(FCL_TARGET_SUPPORT_X64_SSE OFF)
   endif()