OpenGL headers for OS X & Linux

Question

I\'d like to have both the includes for OS X as well as linux in my opengl program (C++) how can I set my program to use one if the other is not available? Here\'s what i\'m cur

Answer 1

What we use for OSX, Unix, Linux, Android, and iOS

#if defined(_WIN32) || defined(_WIN64)
#  include 
#  include 
#  include 
#elif __APPLE__
#  include "TargetConditionals.h"
#  if (TARGET_OS_IPHONE && TARGET_IPHONE_SIMULATOR) || TARGET_OS_IPHONE
#    include 
#    include 
#  else
#    include 
#    include 
#    include 
#  endif
#elif defined(__ANDROID__) || defined(ANDROID)
#  include 
#  include 
#elif defined(__linux__) || defined(__unix__) || defined(__posix__)
#  include 
#  include 
#  include 
#else
#  error platform not supported.
#endif