| // |
| // Copyright 2019 The Abseil Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef ABSL_FLAGS_CONFIG_H_ |
| #define ABSL_FLAGS_CONFIG_H_ |
| |
| // Determine if we should strip string literals from the Flag objects. |
| // By default we strip string literals on mobile platforms. |
| #if !defined(ABSL_FLAGS_STRIP_NAMES) |
| |
| #if defined(__ANDROID__) |
| #define ABSL_FLAGS_STRIP_NAMES 1 |
| |
| #elif defined(__APPLE__) |
| #include <TargetConditionals.h> |
| #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE |
| #define ABSL_FLAGS_STRIP_NAMES 1 |
| #elif defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED |
| #define ABSL_FLAGS_STRIP_NAMES 1 |
| #endif // TARGET_OS_* |
| #endif |
| |
| #endif // !defined(ABSL_FLAGS_STRIP_NAMES) |
| |
| #if !defined(ABSL_FLAGS_STRIP_NAMES) |
| // If ABSL_FLAGS_STRIP_NAMES wasn't set on the command line or above, |
| // the default is not to strip. |
| #define ABSL_FLAGS_STRIP_NAMES 0 |
| #endif |
| |
| #if !defined(ABSL_FLAGS_STRIP_HELP) |
| // By default, if we strip names, we also strip help. |
| #define ABSL_FLAGS_STRIP_HELP ABSL_FLAGS_STRIP_NAMES |
| #endif |
| |
| // ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD macro is used for using atomics with |
| // double words, e.g. absl::Duration. |
| // For reasons in bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80878, modern |
| // versions of GCC do not support cmpxchg16b instruction in standard atomics. |
| #ifdef ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD |
| #error "ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD should not be defined." |
| #elif defined(__clang__) && defined(__x86_64__) && \ |
| defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16) |
| #define ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD 1 |
| #endif |
| |
| // ABSL_FLAGS_INTERNAL_HAS_RTTI macro is used for selecting if we can use RTTI |
| // for flag type identification. |
| #ifdef ABSL_FLAGS_INTERNAL_HAS_RTTI |
| #error ABSL_FLAGS_INTERNAL_HAS_RTTI cannot be directly set |
| #elif !defined(__GNUC__) || defined(__GXX_RTTI) |
| #define ABSL_FLAGS_INTERNAL_HAS_RTTI 1 |
| #endif // !defined(__GNUC__) || defined(__GXX_RTTI) |
| |
| // These macros represent the "source of truth" for the list of supported |
| // built-in types. |
| #define ABSL_FLAGS_INTERNAL_BUILTIN_TYPES(A) \ |
| A(bool, bool) \ |
| A(short, short) \ |
| A(unsigned short, unsigned_short) \ |
| A(int, int) \ |
| A(unsigned int, unsigned_int) \ |
| A(long, long) \ |
| A(unsigned long, unsigned_long) \ |
| A(long long, long_long) \ |
| A(unsigned long long, unsigned_long_long) \ |
| A(double, double) \ |
| A(float, float) |
| |
| #define ABSL_FLAGS_INTERNAL_SUPPORTED_TYPES(A) \ |
| ABSL_FLAGS_INTERNAL_BUILTIN_TYPES(A) \ |
| A(std::string, std_string) \ |
| A(std::vector<std::string>, std_vector_of_string) |
| |
| #endif // ABSL_FLAGS_CONFIG_H_ |