-# serial 17
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,
+# serial 20
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2011 Free Software Foundation,
dnl Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
int result = 0;
time_t t, delta;
int i, j;
+ int time_t_signed_magnitude = (time_t) ~ (time_t) 0 < (time_t) -1;
+ int time_t_signed = ! ((time_t) 0 < (time_t) -1);
/* This test makes some buggy mktime implementations loop.
Give up after 60 seconds; a mktime slower than that
isn't worth using anyway. */
alarm (60);
- for (;;)
- {
- t = (time_t_max << 1) + 1;
- if (t <= time_t_max)
- break;
- time_t_max = t;
- }
- time_t_min = - ((time_t) ~ (time_t) 0 == (time_t) -1) - time_t_max;
+ time_t_max = (! time_t_signed
+ ? (time_t) -1
+ : ((((time_t) 1 << (sizeof (time_t) * CHAR_BIT - 2)) - 1)
+ * 2 + 1));
+ time_t_min = (! time_t_signed
+ ? (time_t) 0
+ : time_t_signed_magnitude
+ ? ~ (time_t) 0
+ : ~ time_t_max);
delta = time_t_max / 997; /* a suitable prime number */
for (i = 0; i < N_STRINGS; i++)
fi
])
+AC_DEFUN([gl_FUNC_MKTIME_INTERNAL], [
+ AC_REQUIRE([gl_FUNC_MKTIME])
+ if test $REPLACE_MKTIME = 0; then
+ dnl BeOS has __mktime_internal in libc, but other platforms don't.
+ AC_CHECK_FUNC([__mktime_internal],
+ [AC_DEFINE([mktime_internal], [__mktime_internal],
+ [Define to the real name of the mktime_internal function.])
+ ],
+ [dnl mktime works but it doesn't export __mktime_internal,
+ dnl so we need to substitute our own mktime implementation.
+ REPLACE_MKTIME=1
+ AC_LIBOBJ([mktime])
+ gl_PREREQ_MKTIME
+ ])
+ fi
+])
+
# Prerequisites of lib/mktime.c.
AC_DEFUN([gl_PREREQ_MKTIME],
[