SSE4 Compilation

  • Hello,

    I need to compile my program using either AVX or SSE4 instructions for a library I am using (dlib).
    I want my program to run on different computers so I would prefer to use SSE4 since its more general (some computers don't have AVX).

    I am not sure exactly what each line does but with these instructions my program was running well:


    I guess "-mavx" was to enable AVX instructions. However, I want to use SSE4 instructions but I can't make it work. What should I do ?

    I am using mingw 32 bit on Windows 10.

    Thank you so much,


  • Lifetime Qt Champion


    Isn't the -msseXXXwhat you are looking for ? See here.

  • Yes, I guess I should use -msse4. It just that when I try that my program crashes. But I think that it comes from one of my library. I just thought that I did something wrong. Thanks again.


  • Lifetime Qt Champion

    Then you should check exactly what parameters were used to build that library.

Log in to reply

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.