This file (extfuncs.lst) is automatically read if extfuncs.py is run without
parameters. The file is simply scanned for patterns that look like OpenGL
function calls, everything else is ignored. You may put a simple list of used
functions here, or, as I did in this example, the linker messages that complain
about the missing functions:

shader.obj : error LNK2001: unresolved external symbol _glGetShaderInfoLog
shader.obj : error LNK2001: unresolved external symbol _glGetShaderiv
shader.obj : error LNK2001: unresolved external symbol _glCompileShader
shader.obj : error LNK2001: unresolved external symbol _glShaderSource
shader.obj : error LNK2001: unresolved external symbol _glCreateShader
shader.obj : error LNK2001: unresolved external symbol _glUseProgram
shader.obj : error LNK2001: unresolved external symbol _glGetProgramInfoLog
shader.obj : error LNK2001: unresolved external symbol _glGetProgramiv
shader.obj : error LNK2001: unresolved external symbol _glLinkProgram
shader.obj : error LNK2001: unresolved external symbol _glAttachShader
shader.obj : error LNK2001: unresolved external symbol _glCreateProgram

scene_clock.obj : error LNK2001: unresolved external symbol _glGetUniformLocation
scene_clock.obj : error LNK2001: unresolved external symbol _glUniform3f
scene_clock.obj : error LNK2001: unresolved external symbol _glUniform1i
scene_clock.obj : error LNK2001: unresolved external symbol _glActiveTexture
postfx.obj : error LNK2001: unresolved external symbol _glUniform1f

fbo.obj : error LNK2001: unresolved external symbol _glBindFramebufferEXT
fbo.obj : error LNK2001: unresolved external symbol _glCheckFramebufferStatusEXT
fbo.obj : error LNK2001: unresolved external symbol _glFramebufferTexture2DEXT
fbo.obj : error LNK2001: unresolved external symbol _glGenerateMipmapEXT
fbo.obj : error LNK2001: unresolved external symbol _glFramebufferRenderbufferEXT
fbo.obj : error LNK2001: unresolved external symbol _glRenderbufferStorageEXT
fbo.obj : error LNK2001: unresolved external symbol _glBindRenderbufferEXT
fbo.obj : error LNK2001: unresolved external symbol _glGenRenderbuffersEXT
fbo.obj : error LNK2001: unresolved external symbol _glGenFramebuffersEXT
fbo.obj : error LNK2001: unresolved external symbol _glDeleteRenderbuffersEXT
fbo.obj : error LNK2001: unresolved external symbol _glDeleteFramebuffersEXT