-AC_CHECK_SIZEOF([off_t])
-AC_CHECK_SIZEOF([long long])
-ZEBRA_CFLAGS="-DZEBRA_ZINT=${ac_cv_sizeof_long_long}"
-AC_DEFINE_UNQUOTED(ZEBRA_ZINT,${ac_cv_sizeof_long_long})
+AC_CHECK_TYPES([long long])
+if test "${ac_cv_type_long_long}" = "yes"; then
+ ZINT_VALUE=1
+else
+ ZINT_VALUE=0
+fi
+ZEBRA_CFLAGS="-DZEBRA_ZINT=${ZINT_VALUE}"
+AC_DEFINE_UNQUOTED(ZEBRA_ZINT,${ZINT_VALUE})