On Sun, 1 Oct 2023 at 00:59, Nick Bowler <nbow...@draconx.ca> wrote: > Suggestion 2) All explicit --enable-foo/--disable-foo arguments to > a configure script are available in shell variables; in the case of > --disable-dependency-tracking you can do something like this in > configure.ac: > > AM_CONDITIONAL([NO_DEPS], [test x"$enable_dependency_tracking" = x"no"]) > > then in Makefile.am: > > if NO_DEPS > # stuff to do when dependency tracking is disabled > else > # stuff to do otherwise > endif > > Note that these approaches are different in the case where dependency > tracking is disabled because it is not supported by the user's tools, > rather than by explicit request. This may or may not matter for your > use case.
Thanks, Nick, Youi've made it easy for me without spelunking and trying to guess what's documented. I think I'll go with the documented approach as I am not concerned about the corner case. I don't know what tool deficiency might trigger it, but I'm going to assume for now that it's good enough to optimize build time only when --disable-depedency-tracking is used. Cheers, Dave Hart
