diff -rupN MuseScore-3.6.old/build/CreatePrecompiledHeader.cmake MuseScore-3.6/build/CreatePrecompiledHeader.cmake
--- MuseScore-3.6.old/build/CreatePrecompiledHeader.cmake	2021-01-15 13:36:02.000000000 +0100
+++ MuseScore-3.6/build/CreatePrecompiledHeader.cmake	2021-01-20 11:29:16.830036993 +0100
@@ -36,6 +36,8 @@ macro( precompiled_header includes heade
         endforeach()
 
         list( APPEND compile_flags ${all_define_flags} )
+        
+        list( APPEND compile_flags ${CMAKE_CXX_FLAGS} )
 
         if (APPLE)
             list( APPEND compile_flags "-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
@@ -138,4 +140,4 @@ macro( vstudio_pch target_name )
                COMPILE_FLAGS "/Yc"
             ) 
     endif( MSVC )
-endmacro()
\ No newline at end of file
+endmacro()