Hello, On Wed, May 30, 2007 at 11:48:42AM +0100, Patrick Welche wrote: > - I never see uint8_t (cached), and I think this is because > AC_TYPE_INT8_T uses ac_cv_c_uint8_t, whereas AC_CHECK_TYPES tests > ac_cv_type_uint8_t, yet you seem to see it - I do see it for size_t... well, I was cheating. It was not paste, it was edited. The actual results look like this: checking for uint8_t... yes checking for size_t... yes checking for uint8_t... yes checking for size_t... (cached) yes And yes, it sounds inconsistent. IMVHO the ac_cv_c_ prefix should be changed to ac_cv_type_ here. What do others think? So it might be safer to use AC_CHECK_TYPES([int64_t]) AC_TYPE_INT64_T which will continue to give the same results even if the above inconsistency gets fixed. > #ifdef HAVE_INT64_T > code using int64_t > #else > long winded int32_t alternative > #endif You explanation is correct: this works, but might prove to be fragile. It is documented that the fallback definition is provided as #define, not typedef. So you might rely on that and use: #if defined(HAVE_INT64_T) || defined(int64_t) #define USE_INT64 1 #else #undef USE_INT64 #endif > > Hope you find this mosaic of comments useful, ... ``incorrect comments,'' I should have said ... > Yes, thank you! Yet it helped, wow! Have a nice day, Stepan _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
