m4/uintmax_t.m4

   1 #serial 5
   2
   3 dnl From Paul Eggert.
   4
   5 AC_PREREQ(2.13)
   6
   7 # Define uintmax_t to `unsigned long' or `unsigned long long'
   8 # if <inttypes.h> does not exist.
   9
  10 AC_DEFUN(jm_AC_TYPE_UINTMAX_T,
  11 [
  12   AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
  13   if test $jm_ac_cv_header_inttypes_h = no; then
  14     AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG])
  15     test $ac_cv_type_unsigned_long_long = yes \
  16       && ac_type='unsigned long long' \
  17       || ac_type='unsigned long'
  18     AC_DEFINE_UNQUOTED(uintmax_t, $ac_type,
  19 [  Define to unsigned long or unsigned long long
  20    if <inttypes.h> doesn't define.])
  21   fi
  22 ])