--- CMakeLists.txt.orig	2021-03-12 15:55:41 UTC
+++ CMakeLists.txt
@@ -12,7 +12,7 @@ endif()
 # project name
 project( vvdec VERSION 1.0.0.0 )
 
-set( VVDEC_ENABLE_X86_SIMD TRUE )
+set( VVDEC_ENABLE_X86_SIMD ${FREEBSD_VVDEC_ENABLE_X86_SIMD} )
 set( VVDEC_ENABLE_ARM_SIMD FALSE )
 
 if( APPLE )
@@ -37,7 +37,7 @@ endif()
 # enable sse4.1 build for all source files for gcc and clang
 if( VVDEC_ENABLE_X86_SIMD )
   if( UNIX OR MINGW )
-    add_compile_options( "-msse4.1" )
+    add_compile_options( ${FREEBSD_SIMD_CFLAGS} )
   endif()
 
   set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DTARGET_SIMD_X86" )