X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fuintmax_t.m4;h=c1f954ee7ebe49d9a463bf7ace334f8afda23416;hb=c1dcfef8c8e60b139732f79bd8a9787e5d6a805f;hp=8c0189bca061f2fa702df8a3b4bb4ac045423eda;hpb=6ef23b78d694abc9b08785432a352fb12b42bf6f;p=gnulib.git

diff --git a/m4/uintmax_t.m4 b/m4/uintmax_t.m4
index 8c0189bca..c1f954ee7 100644
--- a/m4/uintmax_t.m4
+++ b/m4/uintmax_t.m4
@@ -1,26 +1,30 @@
-#serial 2
+# uintmax_t.m4 serial 12
+dnl Copyright (C) 1997-2004, 2007-2011 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_PREREQ(2.13)
+AC_PREREQ([2.13])
 
-# Define uintmax_t to `unsigned long' or `unsigned long long'
-# if <inttypes.h> does not exist.
+# Define uintmax_t to 'unsigned long' or 'unsigned long long'
+# if it is not already defined in <stdint.h> or <inttypes.h>.
 
-AC_DEFUN(jm_AC_TYPE_UINTMAX_T,
+AC_DEFUN([gl_AC_TYPE_UINTMAX_T],
 [
-  AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
-  if test $jm_ac_cv_header_inttypes_h = no; then
-    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)])
-    test $ac_cv_type_unsigned_long_long = yes \
+  AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
+  AC_REQUIRE([gl_AC_HEADER_STDINT_H])
+  if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then
+    AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
+    test $ac_cv_type_unsigned_long_long_int = yes \
       && ac_type='unsigned long long' \
       || ac_type='unsigned long'
-    AC_DEFINE(uintmax_t, $ac_type,
-	      [  Define to \`unsigned long' or \`unsigned long long'
-   if <inttypes.h> doesn't define.])
+    AC_DEFINE_UNQUOTED([uintmax_t], [$ac_type],
+      [Define to unsigned long or unsigned long long
+       if <stdint.h> and <inttypes.h> don't define.])
+  else
+    AC_DEFINE([HAVE_UINTMAX_T], [1],
+      [Define if you have the 'uintmax_t' type in <stdint.h> or <inttypes.h>.])
   fi
 ])