mandatory:

_POSIX_VERSION (wrong value)
_POSIX2_VERSION
_POSIX_ASYNCHRONOUS_IO
_POSIX_BARRIERS
_POSIX_CLOCK_SELECTION
_POSIX_READER_WRITER_LOCKS
_POSIX_REGEXP
_POSIX_SEMAPHORES (wrong value)
_POSIX_SHELL
_POSIX_SPIN_LOCKS
_POSIX_THREAD_SAFE_FUNCTIONS
_POSIX_THREADS (wrong value)
_POSIX_TIMEOUTS
all _POSIX_V7_* constants
all _POSIX2* constants
_POSIX_ASYNC_IO
_POSIX_PRIO_IO
_POSIX_SYNC_IO
_POSIX_TIMESTAMP_RESOLUTION
all _CS_POSIX_* constants
---------------------------
_SC_ADVISORY_INFO
all _SC_AIO_* constants
_SC_ASYNCHRONOUS_IO
_SC_BARRIERS
all _SC_BC_* constants
_SC_CLOCK_SELECTION
_SC_COLL_WEIGHTS_MAX
_SC_EXPR_NEST_MAX
_SC_FSYNC
_SC_HOST_NAME_MAX
_SC_IPV6
_SC_LINE_MAX
_SC_LOGIN_NAME_MAX
_SC_MEMLOCK
_SC_MEMLOCK_RANGE
_SC_MESSAGE_PASSING
_SC_MQ_OPEN_MAX
_SC_MQ_PRIO_MAX
_SC_PRIORITIZED_IO
_SC_PRIORITY_SCHEDULING
_SC_RAW_SOCKETS
_SC_RE_DUP_MAX
_SC_READER_WRITER_LOCKS
_SC_REGEXP
_SC_SHARED_MEMORY_OBJECTS
_SC_SHELL
_SC_SPAWN
_SC_SPIN_LOCKS
_SC_SPORADIC_SERVER
_SC_SS_REPL_MAX
_SC_SYMLOOP_MAX
_SC_SYNCHRONIZED_IO
_SC_THREAD_DESTRUCTOR_ITERATIONS
_SC_THREAD_KEYS_MAX
_SC_THREAD_PRIO_INHERIT
_SC_THREAD_PRIO_PROTECT
_SC_THREAD_ROBUST_PRIO_INHERIT
_SC_THREAD_ROBUST_PRIO_PROTECT
_SC_THREAD_SAFE_FUNCTIONS
_SC_THREAD_SPORADIC_SERVER
_SC_THREAD_THREADS_MAX
_SC_TIMEOUTS
all _SC_TRACE* constants
_SC_TTY_NAME_MAX
_SC_TYPED_MEMORY_OBJECTS
all _SC_V7_* constants
all _SC_XOPEN_* constants

===============================

optional:
_XOPEN_VERSION
_POSIX_ADVISORY_INFO
_POSIX_FSYNC
_POSIX_IPV6
_POSIX_MEMLOCK
_POSIX_MEMLOCK_RANGE
_POSIX_MESSAGE_PASSING
_POSIX_PRIORITIZED_IO
_POSIX_PRIORITY_SCHEDULING
_POSIX_RAW_SOCKETS
_POSIX_SHARED_MEMORY_OBJECTS
_POSIX_SPAWN
_POSIX_SPORADIC_SERVER
_POSIX_SYNCHRONIZED_IO
_POSIX_THREAD_PRIO_INHERIT
_POSIX_THREAD_PRIO_PROTECT
_POSIX_THREAD_SPORADIC_SERVER
all _POSIX_TRACE* constants
_POSIX_TYPED_MEMORY_OBJECTS
all _POSIX_V6_* constants
all _POSIX2* constants
all _XOPEN_* constants
all _CS_POSIX_V6_* constants
_CS_V6_ENV
-------------------------------
all _SC_2_* constants
all _SC_V6_* constants