aha/include/linux/compiler-gcc3.h
Ingo Molnar 6680598b44 Disallow gcc versions 3.{0,1}
GCC 3.0 and 3.1 are too old to build a working kernel.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
[ This check got dropped as obsolete when I simplified the gcc header
  inclusion mess in f153b82121, but Willy
  Tarreau reports actually having those old versions still..  -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-02 12:19:34 -08:00

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C

#ifndef __LINUX_COMPILER_H
#error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
#endif
#if __GNUC_MINOR__ < 2
# error Sorry, your compiler is too old - please upgrade it.
#endif
#if __GNUC_MINOR__ >= 3
# define __used __attribute__((__used__))
#else
# define __used __attribute__((__unused__))
#endif
#if __GNUC_MINOR__ >= 4
#define __must_check __attribute__((warn_unused_result))
#endif
/*
* A trick to suppress uninitialized variable warning without generating any
* code
*/
#define uninitialized_var(x) x = x
#define __always_inline inline __attribute__((always_inline))