I have the very same problem concerning the missing references... how can I find out what went wrong? As soon as I add aes.c (!) as include, it works

Dear all, I'm trying to include mbedtls in my project. I actually have the same problem as the user here: https://esp32.com/viewtopic.php?f=2&t=3080&start=10# I really have to include aes.c, otherwise I got a lot of undefined references concerning the mbed stuff. Did I do something wrong with my too...