tools/compilers/gcc-glibc/glibc-2.19-akaros/sysdeps/akaros/kernel-features.h - upstream - Git at Google

 /* Glibc uses this header to set a bunch of #defines to show what is supported
  * on a particular kernel version.  They set things like __ASSUME_AT_RANDOM. */

 #pragma once
	/* Glibc uses this header to set a bunch of #defines to show what is supported
	* on a particular kernel version. They set things like __ASSUME_AT_RANDOM. */

	#pragma once