Install liballegro5-dev by entering the following commands in the terminal:
sudo apt update sudo apt install liballegro5-dev
Description:
development files for the Allegro 5 library
This package is needed to build programs using the Allegro 5 library. Contains header files. . Allegro is a cross-platform library intended for use in computer games and other types of multimedia programming. Allegro 5 is the latest major revision of the library, designed to take advantage of modern hardware (e.g. hardware acceleration using 3D cards) and operating systems. Although it is not backwards compatible with earlier versions, it still occupies the same niche and retains a familiar style.
Homepage: http://liballeg.org/
Version: 2:5.2.3.0-1
Section: universe/libdevel