+# Note: If the type 'long long int' exists but is only 32 bits large
+# (as on some very old compilers), AC_TYPE_LONG_LONG_INT will not be
+# defined. In this case you can treat 'long long int' like 'long int'.
+
+AC_DEFUN([AC_TYPE_LONG_LONG_INT],
+[
+ AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[long long int ll = 9223372036854775807ll;
+ long long int nll = -9223372036854775807LL;
+ typedef int a[((-9223372036854775807LL < 0
+ && 0 < 9223372036854775807ll)
+ ? 1 : -1)];
+ int i = 63;]],
+ [[long long int llmax = 9223372036854775807ll;
+ return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
+ | (llmax / ll) | (llmax % ll));]])],
+ [ac_cv_type_long_long_int=yes],
+ [ac_cv_type_long_long_int=no])])
+ if test $ac_cv_type_long_long_int = yes; then
+ AC_DEFINE([HAVE_LONG_LONG_INT], 1,
+ [Define to 1 if the system has the type `long long int'.])
+ fi
+])
+
+# This macro is obsolescent and should go away soon.
+AC_DEFUN([gl_AC_TYPE_LONG_LONG],