Install libpng++-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libpng++-dev
Description:
C++ interface to the PNG (Portable Network Graphics) library
PNG++ aims to provide simple yet powerful C++ interface to libpng, the Portable Network Graphics (PNG) reference implementation library.
Homepage: http://savannah.nongnu.org/projects/pngpp/
Version: 0.2.9-1
Section: universe/libdevel