diff --git a/include/common/compiler.h b/include/common/compiler.h index a13aad5c6..125c47399 100644 --- a/include/common/compiler.h +++ b/include/common/compiler.h @@ -107,5 +107,23 @@ #endif #endif +#ifndef __GNUC_PREREQ__ +#if defined(__GNUC__) && !defined(__INTEL_COMPILER) +#define __GNUC_PREREQ__(ma, mi) \ + (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)) +#else +#define __GNUC_PREREQ__(ma, mi) 0 +#endif +#endif + +#ifndef offsetof +#if __GNUC_PREREQ__(4, 1) +#define offsetof(type, field) __builtin_offsetof(type, field) +#else +#define offsetof(type, field) \ + ((__size_t)(__uintptr_t)((const volatile void *)&((type *)0)->field)) +#endif +#endif + #endif /* _COMMON_COMPILER_H */