gstreamer/subprojects/gst-plugins-base/tests/examples/gl/qt/gl-compat-defines.h

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/*
* GStreamer
* Copyright (C) 2020 Matthew Waters <matthew@centricular.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.
*/
#include <gst/gl/gstglconfig.h>
/* The glext.h guard was renamed in 2018, but some software which
* includes their own copy of the GL headers (such as qt) might have
* older version which use the old guard. This would result in the
* header being included again (and symbols redefined).
*
* To avoid this, we define the "old" guard if the "new" guard is
* defined.*/
#if GST_GL_HAVE_OPENGL
#ifdef __gl_glext_h_
#ifndef __glext_h_
#define __glext_h_ 1
#endif
#endif
#endif