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tools headers: Add conditional __has_builtin() 

As it'll be used by the ctype.h sync with its kernel source original.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2020-12-18 10:16:08 -03:00
parent 4bba4c4bb0
commit ffb9beb13e
1 changed files with 11 additions and 0 deletions
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11
tools/include/linux/compiler_types.h
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@ -2,6 +2,17 @@
#ifndef __LINUX_COMPILER_TYPES_H
#define __LINUX_COMPILER_TYPES_H
/* Builtins */
/*
* __has_builtin is supported on gcc >= 10, clang >= 3 and icc >= 21.
* In the meantime, to support gcc < 10, we implement __has_builtin
* by hand.
*/
#ifndef __has_builtin
#define __has_builtin(x) (0)
#endif
/* Compiler specific macros. */
#ifdef __GNUC__
#include <linux/compiler-gcc.h>