Install libgtkhex-3-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libgtkhex-3-dev
Description:
GNOME Hex editor for files (development headers)
The GHex program can view and edit files in two ways, hex or ascii. Good for editing saved game files. . This package contains the development headers.
Homepage: https://wiki.gnome.org/Apps/Ghex
Version: 3.18.3-3
Section: universe/libdevel