X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fulonglong.m4;h=9fae98e3a6c839221c28ee7e206e225828ec8b64;hb=3bad30ae5fcb8bcf05dc7a125d899350860c5da7;hp=15fab9f46e45c3227499dd23c3d9101ad489c9d9;hpb=3965bf4053324a67ed53e3d261471a567cff2502;p=gnulib.git

diff --git a/m4/ulonglong.m4 b/m4/ulonglong.m4
index 15fab9f46..9fae98e3a 100644
--- a/m4/ulonglong.m4
+++ b/m4/ulonglong.m4
@@ -1,4 +1,4 @@
-# ulonglong.m4 serial 5
+# ulonglong.m4 serial 6
 dnl Copyright (C) 1999-2006 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -10,6 +10,11 @@ dnl From Paul Eggert.
 # This fixes a bug in Autoconf 2.60, but can be removed once we
 # assume 2.61 everywhere.
 
+# Note: If the type 'unsigned long long int' exists but is only 32 bits
+# large (as on some very old compilers), AC_TYPE_UNSIGNED_LONG_LONG_INT
+# will not be defined. In this case you can treat 'unsigned long long int'
+# like 'unsigned long int'.
+
 AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT],
 [
   AC_CACHE_CHECK([for unsigned long long int],