Remove bundled glew, obsoleted by glad

Also make Haiku load the glad header for GLES3 too,
though I haven't test it.

SConstruct

@@ -144,7 +144,6 @@ opts.Add('vsproj', "Generate Visual Studio Project. (yes/no)", 'no')
 # Thirdparty libraries
 opts.Add('builtin_enet', "Use the builtin enet library (yes/no)", 'yes')
 opts.Add('builtin_freetype', "Use the builtin freetype library (yes/no)", 'yes')
-opts.Add('builtin_glew', "Use the builtin glew library (yes/no)", 'yes')
 opts.Add('builtin_libmpcdec', "Use the builtin libmpcdec library (yes/no)", 'yes')
 opts.Add('builtin_libogg', "Use the builtin libogg library (yes/no)", 'yes')
 opts.Add('builtin_libpng', "Use the builtin libpng library (yes/no)", 'yes')

platform/haiku/platform_config.h

@@ -31,4 +31,4 @@
 // for ifaddrs.h needed in drivers/unix/ip_unix.cpp
 #define _BSD_SOURCE 1
 
-#define GLES2_INCLUDE_H <GL/glew.h>
+#define GLES3_INCLUDE_H "glad/glad.h"

platform/x11/detect.py

@@ -175,9 +175,6 @@ def configure(env):
 
     env.Append(CPPFLAGS=['-DOPENGL_ENABLED'])
 
-    if (env['builtin_glew'] == 'no'):
-        env.ParseConfig('pkg-config glew --cflags --libs')
-
     if os.system("pkg-config --exists alsa") == 0:
         print("Enabling ALSA")
         env.Append(CPPFLAGS=["-DALSA_ENABLED"])

thirdparty/README.md

@@ -41,18 +41,6 @@ The files we package are automatically generated.
 See the header of glad.c for instructions on how to generate them for
 the GLES version Godot targets.
 
-## glew
-
-- Upstream: http://glew.sourceforge.net
-- Version: 1.13.0
-- License: BSD-3-Clause
-
-Files extracted from upstream source:
-
-- `src/glew.c`
-- include/GL/ as GL/
-- LICENSE.txt
-
 
 ## jpeg-compressor
 

thirdparty/glew/LICENSE.txt

@@ -1,73 +0,0 @@
-The OpenGL Extension Wrangler Library
-Copyright (C) 2002-2007, Milan Ikits <milan ikits[]ieee org>
-Copyright (C) 2002-2007, Marcelo E. Magallon <mmagallo[]debian org>
-Copyright (C) 2002, Lev Povalahev
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without 
-modification, are permitted provided that the following conditions are met:
-
-* Redistributions of source code must retain the above copyright notice, 
-  this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above copyright notice, 
-  this list of conditions and the following disclaimer in the documentation 
-  and/or other materials provided with the distribution.
-* The name of the author may be used to endorse or promote products 
-  derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
-THE POSSIBILITY OF SUCH DAMAGE.
-
-
-Mesa 3-D graphics library
-Version:  7.0
-
-Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
-BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
-Copyright (c) 2007 The Khronos Group Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and/or associated documentation files (the
-"Materials"), to deal in the Materials without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Materials, and to
-permit persons to whom the Materials are furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Materials.
-
-THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.