How to require only the extensions my system supports?
Hi,
If I use the Web service and I "add all" of the extensions - when I use the resulting file does the header `#define` macros for only the extensions available on my system?

In other words, If i try to do `#ifdef GL_EXT_memory_object`  and I requested that extension but it is not available on my platform, will it be defined (incorrectly)?