--- audacity-2.4.2/cmake-proxies/sbsms/CMakeLists.txt.orig	2020-06-30 12:05:59.536705198 +0200
+++ audacity-2.4.2/cmake-proxies/sbsms/CMakeLists.txt	2020-06-30 12:06:50.161622716 +0200
@@ -28,7 +28,7 @@
 list( APPEND OPTIONS
    PRIVATE
       $<$<C_COMPILER_ID:AppleClang,Clang,GNU>:-Wno-enum-compare>
-      ${MMX_FLAG}
+      ${MMX_FLAG} ${SSE_FLAG}
 
 #     Bug 2488 - Do not define this for SBSMS
 #     ${SSE_FLAG}