On Sun, Oct 27, 2013 at 12:04 PM, Gerald Pfeifer <ger...@pfeifer.com> wrote: > To make it easier to reproduce builds of software and entire GNU/Linux > distributions, RMS had the idea of adding a warning to GCC that warns > about the use of __DATE__ and __TIME__. > > Short of "interesting" changes to the environment or #defining these > two, as soon as a program uses __DATE__ or __TIME__ at least once, > builds of the program will differ for that reason alone. (There are > others, but one step at a time; this is not the point of this mail). > > I was thinking a new warning -Wdate-time or similar could address > this.
I don't have any strong objection, but I'll note that it's even easier to use -D options. CC='gcc -D__DATE__=today' Ian
