-# longlong.m4 serial 14
-dnl Copyright (C) 1999-2007, 2009 Free Software Foundation, Inc.
+# longlong.m4 serial 17
+dnl Copyright (C) 1999-2007, 2009-2016 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_INT if 'long long int' works.
-# This fixes a bug in Autoconf 2.61, but can be removed once we
-# assume 2.62 everywhere.
+# This fixes a bug in Autoconf 2.61, and can be faster
+# than what's in Autoconf 2.62 through 2.68.
# Note: If the type 'long long int' exists but is only 32 bits large
# (as on some very old compilers), HAVE_LONG_LONG_INT will not be
AC_DEFUN([AC_TYPE_LONG_LONG_INT],
[
+ AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
AC_CACHE_CHECK([for long long int], [ac_cv_type_long_long_int],
- [AC_LINK_IFELSE(
- [_AC_TYPE_LONG_LONG_SNIPPET],
- [dnl This catches a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.
- dnl If cross compiling, assume the bug isn't important, since
- dnl nobody cross compiles for this platform as far as we know.
- AC_RUN_IFELSE(
- [AC_LANG_PROGRAM(
- [[@%:@include <limits.h>
- @%:@ifndef LLONG_MAX
- @%:@ define HALF \
- (1LL << (sizeof (long long int) * CHAR_BIT - 2))
- @%:@ define LLONG_MAX (HALF - 1 + HALF)
- @%:@endif]],
- [[long long int n = 1;
- int i;
- for (i = 0; ; i++)
- {
- long long int m = n << i;
- if (m >> i != n)
- return 1;
- if (LLONG_MAX / 2 < m)
- break;
- }
- return 0;]])],
- [ac_cv_type_long_long_int=yes],
- [ac_cv_type_long_long_int=no],
- [ac_cv_type_long_long_int=yes])],
- [ac_cv_type_long_long_int=no])])
+ [ac_cv_type_long_long_int=yes
+ if test "x${ac_cv_prog_cc_c99-no}" = xno; then
+ ac_cv_type_long_long_int=$ac_cv_type_unsigned_long_long_int
+ if test $ac_cv_type_long_long_int = yes; then
+ dnl Catch a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.
+ dnl If cross compiling, assume the bug is not important, since
+ dnl nobody cross compiles for this platform as far as we know.
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[@%:@include <limits.h>
+ @%:@ifndef LLONG_MAX
+ @%:@ define HALF \
+ (1LL << (sizeof (long long int) * CHAR_BIT - 2))
+ @%:@ define LLONG_MAX (HALF - 1 + HALF)
+ @%:@endif]],
+ [[long long int n = 1;
+ int i;
+ for (i = 0; ; i++)
+ {
+ long long int m = n << i;
+ if (m >> i != n)
+ return 1;
+ if (LLONG_MAX / 2 < m)
+ break;
+ }
+ return 0;]])],
+ [],
+ [ac_cv_type_long_long_int=no],
+ [:])
+ fi
+ fi])
if test $ac_cv_type_long_long_int = yes; then
AC_DEFINE([HAVE_LONG_LONG_INT], [1],
- [Define to 1 if the system has the type `long long int'.])
+ [Define to 1 if the system has the type 'long long int'.])
fi
])
# Define HAVE_UNSIGNED_LONG_LONG_INT if 'unsigned long long int' works.
-# This fixes a bug in Autoconf 2.61, but can be removed once we
-# assume 2.62 everywhere.
+# This fixes a bug in Autoconf 2.61, and can be faster
+# than what's in Autoconf 2.62 through 2.68.
# Note: If the type 'unsigned long long int' exists but is only 32 bits
# large (as on some very old compilers), AC_TYPE_UNSIGNED_LONG_LONG_INT
[
AC_CACHE_CHECK([for unsigned long long int],
[ac_cv_type_unsigned_long_long_int],
- [AC_LINK_IFELSE(
- [_AC_TYPE_LONG_LONG_SNIPPET],
- [ac_cv_type_unsigned_long_long_int=yes],
- [ac_cv_type_unsigned_long_long_int=no])])
+ [ac_cv_type_unsigned_long_long_int=yes
+ if test "x${ac_cv_prog_cc_c99-no}" = xno; then
+ AC_LINK_IFELSE(
+ [_AC_TYPE_LONG_LONG_SNIPPET],
+ [],
+ [ac_cv_type_unsigned_long_long_int=no])
+ fi])
if test $ac_cv_type_unsigned_long_long_int = yes; then
AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],
- [Define to 1 if the system has the type `unsigned long long int'.])
+ [Define to 1 if the system has the type 'unsigned long long int'.])
fi
])
[
AC_LANG_PROGRAM(
[[/* For now, do not test the preprocessor; as of 2007 there are too many
- implementations with broken preprocessors. Perhaps this can
- be revisited in 2012. In the meantime, code should not expect
- #if to work with literals wider than 32 bits. */
+ implementations with broken preprocessors. Perhaps this can
+ be revisited in 2012. In the meantime, code should not expect
+ #if to work with literals wider than 32 bits. */
/* Test literals. */
long long int ll = 9223372036854775807ll;
long long int nll = -9223372036854775807LL;
unsigned long long int ull = 18446744073709551615ULL;
/* Test constant expressions. */
typedef int a[((-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
- ? 1 : -1)];
+ ? 1 : -1)];
typedef int b[(18446744073709551615ULL <= (unsigned long long int) -1
- ? 1 : -1)];
+ ? 1 : -1)];
int i = 63;]],
[[/* Test availability of runtime routines for shift and division. */
long long int llmax = 9223372036854775807ll;
unsigned long long int ullmax = 18446744073709551615ull;
return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
- | (llmax / ll) | (llmax % ll)
- | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)
- | (ullmax / ull) | (ullmax % ull));]])
+ | (llmax / ll) | (llmax % ll)
+ | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)
+ | (ullmax / ull) | (ullmax % ull));]])
])
projects / debian / gzip / blobdiff