diff options
| author | Paul Eggert <eggert@cs.ucla.edu> | 2006-07-02 07:08:50 +0000 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2006-07-02 07:08:50 +0000 |
| commit | 047839ffb4fea7a632be0a3f66e174b3ac5c4004 (patch) | |
| tree | 7117d6f5f183736d5b76d73d67d769cf65425c83 /m4/longlong.m4 | |
| parent | 31acf81fa092fabe5fde9b3f23d564ff2f0b02a3 (diff) | |
| download | coreutils-047839ffb4fea7a632be0a3f66e174b3ac5c4004.tar.xz | |
Sync stdint module from gnulib.
Diffstat (limited to 'm4/longlong.m4')
| -rw-r--r-- | m4/longlong.m4 | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/m4/longlong.m4 b/m4/longlong.m4 index 7b399e012..ea7c485c3 100644 --- a/m4/longlong.m4 +++ b/m4/longlong.m4 @@ -1,21 +1,42 @@ -# longlong.m4 serial 5 -dnl Copyright (C) 1999-2004 Free Software Foundation, Inc. +# longlong.m4 serial 6 +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. -# Define HAVE_LONG_LONG if 'long long' works. +# Define HAVE_LONG_LONG_INT if '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_LONG_LONG_INT], +[ + AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[long long int ll = 9223372036854775807ll; + long long int nll = -9223372036854775807LL; + typedef int a[((-9223372036854775807LL < 0 + && 0 < 9223372036854775807ll) + ? 1 : -1)]; + int i = 63;]], + [[long long int llmax = 9223372036854775807ll; + return (ll << 63 | ll >> 63 | ll < i | ll > i + | llmax / ll | llmax % ll);]])], + [ac_cv_type_long_long_int=yes], + [ac_cv_type_long_long_int=no])]) + if test $ac_cv_type_long_long_int = yes; then + AC_DEFINE([HAVE_LONG_LONG_INT], 1, + [Define to 1 if the system has the type `long long int'.]) + fi +]) + +# This macro is obsolescent and should go away soon. AC_DEFUN([gl_AC_TYPE_LONG_LONG], [ - AC_CACHE_CHECK([for long long], ac_cv_type_long_long, - [AC_TRY_LINK([long long ll = 1LL; int i = 63;], - [long long llmax = (long long) -1; - return ll << i | ll >> i | llmax / ll | llmax % ll;], - ac_cv_type_long_long=yes, - ac_cv_type_long_long=no)]) + AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) + ac_cv_type_long_long=$ac_cv_type_long_long_int if test $ac_cv_type_long_long = yes; then AC_DEFINE(HAVE_LONG_LONG, 1, [Define if you have the 'long long' type.]) |