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| author |  Yuriy Chernyshov <thegeorg@yandex-team.com> | 2023-08-21 07:05:50 -0700 |
|---|---|---|
| committer |  Copybara-Service <copybara-worker@google.com> | 2023-08-21 07:06:42 -0700 |
| commit | 36ff83f3789878044f3d1537fef387925330c579 (patch) | |
| tree | c7c78c99621ee8968b22f42eca018da31a081697 | |
| parent | 94b37802217a9c9bb182bd99d55096683ef45b2c (diff) | |
PR #1520: Make use of C++20 feature test macros to bestow better compatibility
Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1520
Fixes #1519 and removes the burden of manually feature testing all the platforms supported by absl.
Merge 26bc4ee13a93edaeee2a21b5eff3569b806acc91 into 94b37802217a9c9bb182bd99d55096683ef45b2c
Merging this change closes #1520
COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1520 from georgthegreat:feature-test-macros 26bc4ee13a93edaeee2a21b5eff3569b806acc91
PiperOrigin-RevId: 558777775
Change-Id: Ie3e1f309761c67fa233a03e42762776cd93c69b4
| -rw-r--r-- | absl/base/config.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/absl/base/config.h b/absl/base/config.h index 65a71199..a8425ba7 100644 --- a/absl/base/config.h +++ b/absl/base/config.h @@ -75,6 +75,12 @@ #define ABSL_INTERNAL_CPLUSPLUS_LANG __cplusplus #endif +#if defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ + ABSL_INTERNAL_CPLUSPLUS_LANG >= 202002L +// Include library feature test macros. +#include <version> +#endif + #if defined(__APPLE__) // Included for TARGET_OS_IPHONE, __IPHONE_OS_VERSION_MIN_REQUIRED, // __IPHONE_8_0. @@ -557,6 +563,8 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || // Checks whether C++17 std::any is available. #ifdef ABSL_HAVE_STD_ANY #error "ABSL_HAVE_STD_ANY cannot be directly set." +#elif defined(__cpp_lib_any) && __cpp_lib_any >= 201606L +#define ABSL_HAVE_STD_ANY 1 #elif defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L && \ !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE @@ -568,6 +576,8 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || // Checks whether C++17 std::optional is available. #ifdef ABSL_HAVE_STD_OPTIONAL #error "ABSL_HAVE_STD_OPTIONAL cannot be directly set." +#elif defined(__cpp_lib_optional) && __cpp_lib_optional >= 202106L +#define ABSL_HAVE_STD_OPTIONAL 1 #elif defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L && \ !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE @@ -579,6 +589,8 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || // Checks whether C++17 std::variant is available. #ifdef ABSL_HAVE_STD_VARIANT #error "ABSL_HAVE_STD_VARIANT cannot be directly set." +#elif defined(__cpp_lib_variant) && __cpp_lib_variant >= 201606L +#define ABSL_HAVE_STD_VARIANT 1 #elif defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L && \ !ABSL_INTERNAL_APPLE_CXX17_TYPES_UNAVAILABLE @@ -590,6 +602,8 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || // Checks whether C++17 std::string_view is available. #ifdef ABSL_HAVE_STD_STRING_VIEW #error "ABSL_HAVE_STD_STRING_VIEW cannot be directly set." +#elif defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L +#define ABSL_HAVE_STD_STRING_VIEW 1 #elif defined(ABSL_INTERNAL_CPLUSPLUS_LANG) && \ ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L #define ABSL_HAVE_STD_STRING_VIEW 1 |