title: portable way to deal with 64/32 bit time_t
body: <p>I have some code which is built both on Windows and Linux.  Linux at this point is always 32bit but Windows is 32 and 64bit.  Windows wants to have time_t be 64 bit and Linux still has it as 32 bit.  I'm fine with that, except in some places time_t values are converted to strings.  So when time_T is 32 bit it should be done with %d and when it is 64bit with %lld... what is the smart way to do this?  Also: any ideas how I may find all places where time_t's are passed to printf-style functions to address this issue?</p>
  
  <p>edit:
  I came up with declaring TT_FMT as "%d" or "%lld" and then changing my printfs as in
  printf("time: %d, register: blah") to be printf("time: " TT_FMT ", register: blah")
  Is there a better way?  And how do I find them all?</p>