[671/906] win32: #include GL/glext.h on windows

also add some GL default variables if some GL types are not defined

gst-libs/gst/gl/glprototypes/gstgl_compat.h

@@ -0,0 +1,38 @@
+ /*
+ * GStreamer
+ * Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_GL_COMPAT_H__
+#define __GST_GL_COMPAT_H__
+
+/* undefined typedefs */
+#ifndef GLeglImageOES
+typedef gpointer GLeglImageOES;
+#endif
+#ifndef GLchar
+typedef gchar GLchar;
+#endif
+#ifndef GLsizeiptr
+typedef ptrdiff_t GLsizeiptr;
+#endif
+#ifndef GLintptr
+typedef ptrdiff_t GLintptr;
+#endif
+
+#endif

gst-libs/gst/gl/gstglapi.h

@@ -40,8 +40,13 @@
 # else
 #  include <GL/glu.h>
 #  include <GL/gl.h>
+#  if __WIN32__
+#   include <GL/glext.h>
 #  endif
 # endif
+#endif
+
+#include "glprototypes/gstgl_compat.h"
 
 #include <gst/gst.h>