"Steven G. Johnson" <stevenj@xxxxxxxxxxxx> writes: > As you yourself point out, the purpose of the AC_PROG_CC_C99 macro is > to discover compiler flags that put the compiler in a C99-ish mode, > *not* to guarantee that the compiler completely conforms to the [C99] > standard. Yes, quite clearly it's a judgment call. I listed what I considered to be important C99 features, features that even a half-baked "C99" compiler would have. It was not intended to be a comprehensive test for C99 conformance. For example, I didn't suggest testing for \U, since I don't think that's an important feature. I omitted far more C99 features than I mentioned. C99 is a bit trickier than C89, since its takeup is far more slower and gradual than C89's was. So it will be a trickier business to come up with a nice macro. I gave it my best shot, though. We can adjust the list of features as needed, based on further experience. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf