diff options
Diffstat (limited to 'm4/longlong.m4')
-rw-r--r-- | m4/longlong.m4 | 53 |
1 files changed, 38 insertions, 15 deletions
diff --git a/m4/longlong.m4 b/m4/longlong.m4 index d7d7350b..3716c09f 100644 --- a/m4/longlong.m4 +++ b/m4/longlong.m4 | |||
@@ -1,23 +1,46 @@ | |||
1 | # longlong.m4 serial 4 | 1 | # longlong.m4 serial 8 |
2 | dnl Copyright (C) 1999-2003 Free Software Foundation, Inc. | 2 | dnl Copyright (C) 1999-2006 Free Software Foundation, Inc. |
3 | dnl This file is free software, distributed under the terms of the GNU | 3 | dnl This file is free software; the Free Software Foundation |
4 | dnl General Public License. As a special exception to the GNU General | 4 | dnl gives unlimited permission to copy and/or distribute it, |
5 | dnl Public License, this file may be distributed as part of a program | 5 | dnl with or without modifications, as long as this notice is preserved. |
6 | dnl that contains a configuration script generated by Autoconf, under | ||
7 | dnl the same distribution terms as the rest of that program. | ||
8 | 6 | ||
9 | dnl From Paul Eggert. | 7 | dnl From Paul Eggert. |
10 | 8 | ||
11 | # Define HAVE_LONG_LONG if 'long long' works. | 9 | # Define HAVE_LONG_LONG_INT if 'long long int' works. |
10 | # This fixes a bug in Autoconf 2.60, but can be removed once we | ||
11 | # assume 2.61 everywhere. | ||
12 | 12 | ||
13 | AC_DEFUN([jm_AC_TYPE_LONG_LONG], | 13 | # Note: If the type 'long long int' exists but is only 32 bits large |
14 | # (as on some very old compilers), AC_TYPE_LONG_LONG_INT will not be | ||
15 | # defined. In this case you can treat 'long long int' like 'long int'. | ||
16 | |||
17 | AC_DEFUN([AC_TYPE_LONG_LONG_INT], | ||
18 | [ | ||
19 | AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int], | ||
20 | [AC_LINK_IFELSE( | ||
21 | [AC_LANG_PROGRAM( | ||
22 | [[long long int ll = 9223372036854775807ll; | ||
23 | long long int nll = -9223372036854775807LL; | ||
24 | typedef int a[((-9223372036854775807LL < 0 | ||
25 | && 0 < 9223372036854775807ll) | ||
26 | ? 1 : -1)]; | ||
27 | int i = 63;]], | ||
28 | [[long long int llmax = 9223372036854775807ll; | ||
29 | return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i) | ||
30 | | (llmax / ll) | (llmax % ll));]])], | ||
31 | [ac_cv_type_long_long_int=yes], | ||
32 | [ac_cv_type_long_long_int=no])]) | ||
33 | if test $ac_cv_type_long_long_int = yes; then | ||
34 | AC_DEFINE([HAVE_LONG_LONG_INT], 1, | ||
35 | [Define to 1 if the system has the type `long long int'.]) | ||
36 | fi | ||
37 | ]) | ||
38 | |||
39 | # This macro is obsolescent and should go away soon. | ||
40 | AC_DEFUN([gl_AC_TYPE_LONG_LONG], | ||
14 | [ | 41 | [ |
15 | AC_CACHE_CHECK([for long long], ac_cv_type_long_long, | 42 | AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) |
16 | [AC_TRY_LINK([long long ll = 1LL; int i = 63;], | 43 | ac_cv_type_long_long=$ac_cv_type_long_long_int |
17 | [long long llmax = (long long) -1; | ||
18 | return ll << i | ll >> i | llmax / ll | llmax % ll;], | ||
19 | ac_cv_type_long_long=yes, | ||
20 | ac_cv_type_long_long=no)]) | ||
21 | if test $ac_cv_type_long_long = yes; then | 44 | if test $ac_cv_type_long_long = yes; then |
22 | AC_DEFINE(HAVE_LONG_LONG, 1, | 45 | AC_DEFINE(HAVE_LONG_LONG, 1, |
23 | [Define if you have the 'long long' type.]) | 46 | [Define if you have the 'long long' type.]) |