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
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