X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Fulonglong.m4;h=15fab9f46e45c3227499dd23c3d9101ad489c9d9;hb=269c2a93c2770d5fbb2895b79afb84f1f35f96b2;hp=afc765a3eee2966dd06cf6a987cbf0e54d7217cd;hpb=5ee5377428346fa4f04fd2f12a68991bbaeb418c;p=gnulib.git

diff --git a/m4/ulonglong.m4 b/m4/ulonglong.m4
index afc765a3e..15fab9f46 100644
--- a/m4/ulonglong.m4
+++ b/m4/ulonglong.m4
@@ -1,16 +1,43 @@
-#serial 1
+# ulonglong.m4 serial 5
+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.
 
 dnl From Paul Eggert.
 
-AC_DEFUN(jm_AC_TYPE_UNSIGNED_LONG_LONG,
+# Define HAVE_UNSIGNED_LONG_LONG_INT if 'unsigned long long int' works.
+# This fixes a bug in Autoconf 2.60, but can be removed once we
+# assume 2.61 everywhere.
+
+AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT],
+[
+  AC_CACHE_CHECK([for unsigned long long int],
+    [ac_cv_type_unsigned_long_long_int],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+	  [[unsigned long long int ull = 18446744073709551615ULL;
+	    typedef int a[(18446744073709551615ULL <= (unsigned long long int) -1
+			   ? 1 : -1)];
+	   int i = 63;]],
+	  [[unsigned long long int ullmax = 18446744073709551615ull;
+	    return (ull << 63 | ull >> 63 | ull << i | ull >> i
+		    | ullmax / ull | ullmax % ull);]])],
+       [ac_cv_type_unsigned_long_long_int=yes],
+       [ac_cv_type_unsigned_long_long_int=no])])
+  if test $ac_cv_type_unsigned_long_long_int = yes; then
+    AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], 1,
+      [Define to 1 if the system has the type `unsigned long long int'.])
+  fi
+])
+
+# This macro is obsolescent and should go away soon.
+AC_DEFUN([gl_AC_TYPE_UNSIGNED_LONG_LONG],
 [
-  AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long,
-  [AC_TRY_COMPILE([],
-    [unsigned long long i = (unsigned long long) -1;],
-    ac_cv_type_unsigned_long_long=yes,
-    ac_cv_type_unsigned_long_long=no)])
+  AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
+  ac_cv_type_unsigned_long_long=$ac_cv_type_unsigned_long_long_int
   if test $ac_cv_type_unsigned_long_long = yes; then
     AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1,
-      [Define if you have the unsigned long long type.])
+      [Define if you have the 'unsigned long long' type.])
   fi
 ])