diff options
Diffstat (limited to 'absl/base/config.h')
| -rw-r--r-- | absl/base/config.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/absl/base/config.h b/absl/base/config.h index a8f2eab5..13263f9d 100644 --- a/absl/base/config.h +++ b/absl/base/config.h @@ -941,6 +941,27 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || #define ABSL_HAVE_CONSTANT_EVALUATED 1 #endif +// ABSL_CONSTEXPR_SINCE_CXXYY is used to conditionally define constexpr for +// different C++ versions. +#if defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ + ABSL_INTERNAL_CPLUSPLUS_LANG >= 201402L +#define ABSL_CONSTEXPR_SINCE_CXX14 constexpr +#else +#define ABSL_CONSTEXPR_SINCE_CXX14 +#endif +#if defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ + ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L +#define ABSL_CONSTEXPR_SINCE_CXX17 constexpr +#else +#define ABSL_CONSTEXPR_SINCE_CXX17 +#endif +#if defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ + ABSL_INTERNAL_CPLUSPLUS_LANG >= 202002L +#define ABSL_CONSTEXPR_SINCE_CXX20 constexpr +#else +#define ABSL_CONSTEXPR_SINCE_CXX20 +#endif + // ABSL_INTERNAL_EMSCRIPTEN_VERSION combines Emscripten's three version macros // into an integer that can be compared against. #ifdef ABSL_INTERNAL_EMSCRIPTEN_VERSION |