Include macOS libraries
Probably options:
glew.def
compilerOpts.osx = -I/usr/include -I/usr/local/include
linkerOpts.osx = -L/usr/lib -L/usr/local/lib -lGL -lGLEW
glfw.def
compilerOpts.osx = -I/usr/include -I/usr/local/include
linkerOpts.osx = -L/usr/lib -L/usr/local/lib -lglfw