Install libcsound64-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libcsound64-dev
Description:
development files for Csound
This package contains the development files needed to build programs linking to the Csound library. . For more information on Csound, see the csound package.
Homepage: https://csound.github.io/
Version: 1:6.10.0~dfsg-1
Section: universe/libdevel