gl_loader 0.1.2

Simple OpenGL function pointer loader based on Glad.
Documentation 
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/*
 * This file his an extract from glad: https://glad.dav1d.de/
 */

#ifndef __glad_h_
#define __glad_h_

#ifdef __gl_h_
#error OpenGL header already included, remove this include, glad already provides it
#endif
#define __gl_h_

#if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#ifndef NOMINMAX
#define NOMINMAX 1
#endif
#include <windows.h>
#endif

#ifndef APIENTRY
#define APIENTRY
#endif
#ifndef APIENTRYP
#define APIENTRYP APIENTRY *
#endif

#ifndef GLAPIENTRY
#define GLAPIENTRY APIENTRY
#endif

#ifndef GLAPI
#if defined(GLAD_GLAPI_EXPORT)
#if defined(_WIN32) || defined(__CYGWIN__)
#if defined(GLAD_GLAPI_EXPORT_BUILD)
#if defined(__GNUC__)
#define GLAPI __attribute__((dllexport)) extern
#else
#define GLAPI __declspec(dllexport) extern
#endif
#else
#if defined(__GNUC__)
#define GLAPI __attribute__((dllimport)) extern
#else
#define GLAPI __declspec(dllimport) extern
#endif
#endif
#elif defined(__GNUC__) && defined(GLAD_GLAPI_EXPORT_BUILD)
#define GLAPI __attribute__((visibility("default"))) extern
#else
#define GLAPI extern
#endif
#else
#define GLAPI extern
#endif
#endif

#endif