Install xpaint-dev by entering the following commands in the terminal:
sudo apt update sudo apt install xpaint-dev
Description:
simple paint program for X (development files)
XPaint is a program suitable for producing simple graphics. This package contains the headers and other development files not included in the main xpaint package. Install this if you wish to compile programs that use the libxaw3dxft library.
Homepage: https://sourceforge.net/projects/sf-xpaint/
Version: 2.9.1.4-3.2
Section: universe/libdevel