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[findutils.git] / m4 / uintmax_t.m4
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1 #serial 5
3 dnl From Paul Eggert.
5 AC_PREREQ(2.13)
7 # Define uintmax_t to `unsigned long' or `unsigned long long'
8 # if <inttypes.h> does not exist.
10 AC_DEFUN(jm_AC_TYPE_UINTMAX_T,
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