1 files changed, 15 insertions, 38 deletions

diff --git a/m4/longlong.m4 b/m4/longlong.m4
index 3716c09f..d7d7350b 100644
--- a/m4/longlong.m4
+++ b/m4/longlong.m4
@@ -1,46 +1,23 @@
-# longlong.m4 serial 8
-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,
-dnl with or without modifications, as long as this notice is preserved.
+# longlong.m4 serial 4
+dnl Copyright (C) 1999-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
 
 dnl From Paul Eggert.
 
-# Define HAVE_LONG_LONG_INT if 'long long int' works.
-# This fixes a bug in Autoconf 2.60, but can be removed once we
-# assume 2.61 everywhere.
+# Define HAVE_LONG_LONG if 'long long' works.
 
-# 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 $ac_cv_type_long_long_int = yes; then
-    AC_DEFINE([HAVE_LONG_LONG_INT], 1,
-      [Define to 1 if the system has the type `long long int'.])
-  fi
-])
-
-# This macro is obsolescent and should go away soon.
-AC_DEFUN([gl_AC_TYPE_LONG_LONG],
+AC_DEFUN([jm_AC_TYPE_LONG_LONG],
 [
-  AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
-  ac_cv_type_long_long=$ac_cv_type_long_long_int
+  AC_CACHE_CHECK([for long long], ac_cv_type_long_long,
+  [AC_TRY_LINK([long long ll = 1LL; int i = 63;],
+    [long long llmax = (long long) -1;
+     return ll << i | ll >> i | llmax / ll | llmax % ll;],
+    ac_cv_type_long_long=yes,
+    ac_cv_type_long_long=no)])
   if test $ac_cv_type_long_long = yes; then
     AC_DEFINE(HAVE_LONG_LONG, 1,
       [Define if you have the 'long long' type.])