Install libretro-gtk-0.14-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libretro-gtk-0.14-dev
Description:
library for GTK+ libretro frontends - development files
retro-gtk is a library for developers to make GTK+ frontends for the libretro API. . libretro is an API for the creation of games and emulators. The emulators and platforms are distributed as "libretro cores". . Therefore, a developer can use retro-gtk to make a gaming app that should be able to play any game that can be played using libretro cores. . This package contains the development files.
Homepage: https://wiki.gnome.org/Apps/Games
Version: 0.14.0-1
Section: universe/libdevel