diff options
Diffstat (limited to 'absl/base')
| -rw-r--r-- | absl/base/config.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/absl/base/config.h b/absl/base/config.h index 1058ce74..5cbc9855 100644 --- a/absl/base/config.h +++ b/absl/base/config.h @@ -928,4 +928,15 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || #define ABSL_INTERNAL_HAVE_ARM_NEON 1 #endif +// ABSL_HAVE_CONSTANT_EVALUATED is used for compile-time detection of +// constant evaluation support through `absl::is_constant_evaluated`. +#ifdef ABSL_HAVE_CONSTANT_EVALUATED +#error ABSL_HAVE_CONSTANT_EVALUATED cannot be directly set +#endif +#ifdef __cpp_lib_is_constant_evaluated +#define ABSL_HAVE_CONSTANT_EVALUATED 1 +#elif ABSL_HAVE_BUILTIN(__builtin_is_constant_evaluated) +#define ABSL_HAVE_CONSTANT_EVALUATED 1 +#endif + #endif // ABSL_BASE_CONFIG_H_ |