Unable to build: Conflicting types for 'GLsizeiptr'

[fabiensanglard]

gcc -c -g -O0 -Wall -Icommon -o common/u2gl.o common/u2gl.c
In file included from /usr/include/GL/gl.h:2085:0,
from /usr/include/GL/glu.h:38,
from common/u2gl.c:4:
/usr/include/GL/glext.h:459:19: error: conflicting types for ‘GLsizeiptr’
typedef ptrdiff_t GLsizeiptr;
^
In file included from common/u2gl.c:3:0:
/usr/include/GLES2/gl2.h:39:26: note: previous declaration of ‘GLsizeiptr’ was here
typedef khronos_ssize_t GLsizeiptr;
^
In file included from /usr/include/GL/gl.h:2085:0,
from /usr/include/GL/glu.h:38,
from common/u2gl.c:4:
/usr/include/GL/glext.h:460:19: error: conflicting types for ‘GLintptr’
typedef ptrdiff_t GLintptr;
^
In file included from common/u2gl.c:3:0:
/usr/include/GLES2/gl2.h:38:26: note: previous declaration of ‘GLintptr’ was here
typedef khronos_intptr_t GLintptr;
^
make: *** [common/u2gl.o] Error 1

Removing glu include fixed the problem