POSIX_V6_ILP32_OFF32
POSIX_V6_ILP32_OFFBIG
POSIX_V6_LP64_OFF64
POSIX_V7_ILP32_OFF32
POSIX_V7_ILP32_OFFBIG
POSIX_V7_LP64_OFF64
XBS5_ILP32_OFF32
XBS5_ILP32_OFFBIG
XBS5_LP64_OFF64
default