From 0ed754bf6007fd6e496d70b6fd545b0cf936c950 Mon Sep 17 00:00:00 2001
From: "Mike C. Fletcher" <mcfletch@vrplumber.com>
Date: Mon, 30 Dec 2019 10:29:12 -0500
Subject: [PATCH] FIX for #27 to work on machines where libOpenGL is not
 present

Apparently the advice that we should use libOpenGL really isn't
universally applicable. Ubuntu 18.04 *does* seem to have it, though
that might be because of an installed package. Ubuntu 19.10 does
*not* have libOpenGL by default.
---
 OpenGL/platform/egl.py | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/OpenGL/platform/egl.py b/OpenGL/platform/egl.py
index 1e087eb0..ff9a68e0 100644
--- a/OpenGL/platform/egl.py
+++ b/OpenGL/platform/egl.py
@@ -31,11 +31,15 @@ def GLES3(self):
     @baseplatform.lazy_property
     def GL(self):
         try:
-            return ctypesloader.loadLibrary(
-                ctypes.cdll,
-                'OpenGL', 
-                mode=ctypes.RTLD_GLOBAL 
-            )
+            for name in ('OpenGL','GL'):
+                lib = ctypesloader.loadLibrary(
+                    ctypes.cdll,
+                    'GL', 
+                    mode=ctypes.RTLD_GLOBAL 
+                )
+                if lib:
+                    return lib 
+            raise OSError("No GL/OpenGL library available")
         except OSError:
             return self.GLES2 or self.GLES1
     @baseplatform.lazy_property