C/C++ preprocessor #if with datetime

Question

I guess this is not possible (yet) but not sure. I need to do conditional compilation based on current date. Something like:

#if (__CURRENT_YEAR < 2016)
...
#endif

I need to exclude something from project after some months and be sure that this will not be forgotten (in future releases).

Answer 1

In your Makefile add

CFLAGS += -DYEAR=$(shell date +%g)

Then in your C source:

#if (YEAR < 16)
....
#endif