Install libespeak-ng-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libespeak-ng-dev
Description:
Multi-lingual software speech synthesizer: development files
eSpeak NG is a software speech synthesizer for English, and some other languages. . This package contains the eSpeak NG development files needed to build against the espeak-ng shared library.
Homepage: https://github.com/espeak-ng/espeak-ng
Version: 1.49.2+dfsg-1
Section: libdevel