#if 0 DEF DEFINED = 1 DEF NOT_DEFINED = 0 #endif from libc.stdint cimport int8_t, int16_t, int32_t, int64_t, intptr_t from libc.stdint cimport uint8_t, uint16_t, uint32_t, uint64_t, uintptr_t cdef extern from *: ctypedef bint bool ctypedef struct va_list cdef extern from *: IF NOT_DEFINED: const int32_t DEFAULT_X # = 8 IF DEFINED: const int32_t DEFAULT_X # = 42 IF (NOT_DEFINED or DEFINED): ctypedef struct Foo: int32_t x; IF NOT_DEFINED: ctypedef struct Bar: Foo y; IF DEFINED: ctypedef struct Bar: Foo z; ctypedef struct Root: Bar w; void root(Root a);