Message 265129 - Python tracker

Undefining the SEM_* macros in multiprocessing.h when __ANDROID__ is set, would allow for an easier update when those functions become implemented at a future API level. The __ANDROID_API__ macro can be used for that purpose. For example, if this happens at API 24, this could be a changed to:

#if defined(__ANDROID__)
# include <android/api-level.h>
# if __ANDROID_API__ < 24
#  undef sem_open
#  ...
# endif
#endif