--- a/include/SDL_opengl_glext.h	2019-07-25 06:32:36.000000000 +0200
+++ b/include/SDL_opengl_glext.h	2019-12-13 01:24:33.908796188 +0100
@@ -469,9 +469,10 @@
 typedef long GLsizeiptr;
 typedef long GLintptr;
 #else
+#define GL_VERSION_ES_CM_1_0 1	/* Avoid redifinition in /usr/include/GLES/gl.h */
 typedef ptrdiff_t GLsizeiptr;
 typedef ptrdiff_t GLintptr;
 #endif
 #define GL_BUFFER_SIZE                    0x8764
 #define GL_BUFFER_USAGE                   0x8765
 #define GL_QUERY_COUNTER_BITS             0x8864
