undeclared function sem_clockwait #3407

i try to make kivy app through buildozer on termux android. termux is not standard environment for buildozer, so i was stepping through procedure and placing adequate files and patching python code.

but now i'm stuck on problem which seems to originate from "python for android" and is related to c language, so i don't know how to resolve this. i attached terminal output below. problem is message "call to undeclared function 'sem_clockwait'", and according to this web page

python/cpython#143640

it is caused by termux being kind of old ubuntu bionic.

is there some easy solution to this?

error.log