Exception: user error (unknown GLUT entry glutInit) on ubuntu

Question

i keep getting this error when trying to use gloss on ubuntu. this is my code.

import Graphics.Gloss

main :: IO ()
main = display window background drawing
    where
      window = InWindow "Nice Window" (200, 200) (0, 0) 
      background = white 
      drawing = Circle 80

Can you guys help me??

what does `ldd ./your_executable` says? does it find libglut? — Yuras, Jul 08 '18 at 20:18
If this problem persists you could try to avoid glut by installing gloss via `cabal install gloss -fglfw` (i.e. use the glfw flag). — Thomas M. DuBuisson, Jul 09 '18 at 06:51

score 0 · Answer 1 · answered Nov 01 '19 at 14:54

For me the problem was missing freeglut package.

$ cd /usr/lib; find | grep glut

It should find something like this:

./libglut.so
./libglut.so.3
./libglut.so.3.11.0

If you lack similar files chances are you have the same problem as I did. Just install freeglut package.

score 0 · Answer 2 · answered Jul 10 '21 at 19:31

0

The problem is that your system is missing the required shared library. On Ubuntu (and similar systems), you can install it with this simple command in a terminal:

sudo apt-get install freeglut3

from GLUT Error in Haskell Program

answered Jul 10 '21 at 19:31

ecburx

45
1
5

Exception: user error (unknown GLUT entry glutInit) on ubuntu

2 Answers2