### - _ -

- __cpp_lib_shared_timed_mutex : shared_mutex
- __glibcxx_check_erase : macros.h
- __glibcxx_check_erase_after : macros.h
- __glibcxx_check_erase_range : macros.h
- __glibcxx_check_erase_range_after : macros.h
- __glibcxx_check_heap_pred : macros.h
- __glibcxx_check_insert : macros.h
- __glibcxx_check_insert_after : macros.h
- __glibcxx_check_insert_range : macros.h
- __glibcxx_check_insert_range_after : macros.h
- __glibcxx_check_partitioned_lower : macros.h
- __glibcxx_check_partitioned_lower_pred : macros.h
- __glibcxx_check_partitioned_upper_pred : macros.h
- __glibcxx_check_sorted_pred : macros.h
- _BALLOC_ALIGN_BYTES : bitmap_allocator.h
- _GLIBCXX_BAL_QUICKSORT : features.h
- _GLIBCXX_CALL : compiletime_settings.h
- _GLIBCXX_DEBUG_VERIFY_AT : macros.h
- _GLIBCXX_DEQUE_BUF_SIZE : stl_deque.h
- _GLIBCXX_FIND_CONSTANT_SIZE_BLOCKS : features.h
- _GLIBCXX_FIND_EQUAL_SPLIT : features.h
- _GLIBCXX_FIND_GROWING_BLOCKS : features.h
- _GLIBCXX_HAS_NESTED_TYPE : type_traits
- _GLIBCXX_MERGESORT : features.h
- _GLIBCXX_PARALLEL_ASSERTIONS : compiletime_settings.h
- _GLIBCXX_PARALLEL_CONDITION : settings.h
- _GLIBCXX_PARALLEL_LENGTH : multiway_merge.h
- _GLIBCXX_QUICKSORT : features.h
- _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_L1 : compiletime_settings.h
- _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_TLB : compiletime_settings.h
- _GLIBCXX_SCALE_DOWN_FPU : compiletime_settings.h
- _GLIBCXX_TREE_DYNAMIC_BALANCING : features.h
- _GLIBCXX_TREE_FULL_COPY : features.h
- _GLIBCXX_TREE_INITIAL_SPLITTING : features.h
- _GLIBCXX_VERBOSE_LEVEL : compiletime_settings.h
- _GLIBCXX_VOLATILE : partition.h , queue.h

### - a -

- ATOMIC_BOOL_LOCK_FREE : atomic_lockfree_defines.h