fatal error: SDL.h

[RoboCop]

Describe the bug
After "make" fatal error: SDL.h: Aucun fichier ou dossier de ce type

To Reproduce
Steps to reproduce the behavior:

1. mkdir BUILD
2. cd BUILD
3. cmake ..
4. make

Expected behavior
Build the game

Screenshots
https://postimg.cc/JGcjzkyP

Desktop (please complete the following information):

• OS: Linux Ubuntu
• Browser Firefox
• Version 19.10

Additional context
I have ps2toolchain and SDL installed.