1: # generated automatically by aclocal 1.11.6 -*- Autoconf -*-
2:
3: # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4: # 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation,
5: # Inc.
6: # This file is free software; the Free Software Foundation
7: # gives unlimited permission to copy and/or distribute it,
8: # with or without modifications, as long as this notice is preserved.
9:
10: # This program is distributed in the hope that it will be useful,
11: # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
12: # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
13: # PARTICULAR PURPOSE.
14:
15: # longlong.m4 serial 17
16: dnl Copyright (C) 1999-2007, 2009-2012 Free Software Foundation, Inc.
17: dnl This file is free software; the Free Software Foundation
18: dnl gives unlimited permission to copy and/or distribute it,
19: dnl with or without modifications, as long as this notice is preserved.
20:
21: dnl From Paul Eggert.
22:
23: # Define HAVE_LONG_LONG_INT if 'long long int' works.
24: # This fixes a bug in Autoconf 2.61, and can be faster
25: # than what's in Autoconf 2.62 through 2.68.
26:
27: # Note: If the type 'long long int' exists but is only 32 bits large
28: # (as on some very old compilers), HAVE_LONG_LONG_INT will not be
29: # defined. In this case you can treat 'long long int' like 'long int'.
30:
31: AC_DEFUN([AC_TYPE_LONG_LONG_INT],
32: [
33: AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
34: AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int],
35: [ac_cv_type_long_long_int=yes
36: if test "x${ac_cv_prog_cc_c99-no}" = xno; then
37: ac_cv_type_long_long_int=$ac_cv_type_unsigned_long_long_int
38: if test $ac_cv_type_long_long_int = yes; then
39: dnl Catch a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.
40: dnl If cross compiling, assume the bug is not important, since
41: dnl nobody cross compiles for this platform as far as we know.
42: AC_RUN_IFELSE(
43: [AC_LANG_PROGRAM(
44: [[@%:@include <limits.h>
45: @%:@ifndef LLONG_MAX
46: @%:@ define HALF \
47: (1LL << (sizeof (long long int) * CHAR_BIT - 2))
48: @%:@ define LLONG_MAX (HALF - 1 + HALF)
49: @%:@endif]],
50: [[long long int n = 1;
51: int i;
52: for (i = 0; ; i++)
53: {
54: long long int m = n << i;
55: if (m >> i != n)
56: return 1;
57: if (LLONG_MAX / 2 < m)
58: break;
59: }
60: return 0;]])],
61: [],
62: [ac_cv_type_long_long_int=no],
63: [:])
64: fi
65: fi])
66: if test $ac_cv_type_long_long_int = yes; then
67: AC_DEFINE([HAVE_LONG_LONG_INT], [1],
68: [Define to 1 if the system has the type 'long long int'.])
69: fi
70: ])
71:
72: # Define HAVE_UNSIGNED_LONG_LONG_INT if 'unsigned long long int' works.
73: # This fixes a bug in Autoconf 2.61, and can be faster
74: # than what's in Autoconf 2.62 through 2.68.
75:
76: # Note: If the type 'unsigned long long int' exists but is only 32 bits
77: # large (as on some very old compilers), AC_TYPE_UNSIGNED_LONG_LONG_INT
78: # will not be defined. In this case you can treat 'unsigned long long int'
79: # like 'unsigned long int'.
80:
81: AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT],
82: [
83: AC_CACHE_CHECK([for unsigned long long int],
84: [ac_cv_type_unsigned_long_long_int],
85: [ac_cv_type_unsigned_long_long_int=yes
86: if test "x${ac_cv_prog_cc_c99-no}" = xno; then
87: AC_LINK_IFELSE(
88: [_AC_TYPE_LONG_LONG_SNIPPET],
89: [],
90: [ac_cv_type_unsigned_long_long_int=no])
91: fi])
92: if test $ac_cv_type_unsigned_long_long_int = yes; then
93: AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],
94: [Define to 1 if the system has the type 'unsigned long long int'.])
95: fi
96: ])
97:
98: # Expands to a C program that can be used to test for simultaneous support
99: # of 'long long' and 'unsigned long long'. We don't want to say that
100: # 'long long' is available if 'unsigned long long' is not, or vice versa,
101: # because too many programs rely on the symmetry between signed and unsigned
102: # integer types (excluding 'bool').
103: AC_DEFUN([_AC_TYPE_LONG_LONG_SNIPPET],
104: [
105: AC_LANG_PROGRAM(
106: [[/* For now, do not test the preprocessor; as of 2007 there are too many
107: implementations with broken preprocessors. Perhaps this can
108: be revisited in 2012. In the meantime, code should not expect
109: #if to work with literals wider than 32 bits. */
110: /* Test literals. */
111: long long int ll = 9223372036854775807ll;
112: long long int nll = -9223372036854775807LL;
113: unsigned long long int ull = 18446744073709551615ULL;
114: /* Test constant expressions. */
115: typedef int a[((-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
116: ? 1 : -1)];
117: typedef int b[(18446744073709551615ULL <= (unsigned long long int) -1
118: ? 1 : -1)];
119: int i = 63;]],
120: [[/* Test availability of runtime routines for shift and division. */
121: long long int llmax = 9223372036854775807ll;
122: unsigned long long int ullmax = 18446744073709551615ull;
123: return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
124: | (llmax / ll) | (llmax % ll)
125: | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)
126: | (ullmax / ull) | (ullmax % ull));]])
127: ])
128:
129: m4_include([m4/ax_check_compile_flag.m4])
130: m4_include([m4/ax_check_link_flag.m4])
131: m4_include([m4/ax_func_getaddrinfo.m4])
132: m4_include([m4/ax_func_snprintf.m4])
133: m4_include([m4/libtool.m4])
134: m4_include([m4/ltoptions.m4])
135: m4_include([m4/ltsugar.m4])
136: m4_include([m4/ltversion.m4])
137: m4_include([m4/lt~obsolete.m4])
138: m4_include([m4/sudo.m4])
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