mirror/autoconf
2
0
Fork 0
mirror of git://git.sv.gnu.org/autoconf synced 2025-01-06 10:25:53 +08:00
Code Issues Packages Projects Releases Wiki Activity

* lib/autoconf/types.m4 (_AC_TYPE_LONG_LONG_SNIPPET): New macro,

Browse Source 
extracted from AC_TYPE_LONG_LONG_INT and AC_TYPE_UNSIGNED_LONG_LONG_INT.
(AC_TYPE_LONG_LONG_INT, AC_TYPE_UNSIGNED_LONG_LONG_INT): Use it.
Fixes problem with Sun C 5.[0-8] in 32-bit mode, reported in
<http://lists.gnu.org/archive/html/autoconf-patches/2007-10/msg00210.html>
Suggested by Paul Eggert.
This commit is contained in:
Bruno Haible 2007-10-30 19:09:54 -07:00 committed by Paul Eggert
parent 4bf3c4459c
commit dc51583646
2 changed files with 48 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
ChangeLog
View File

@ -1,3 +1,12 @@
2007-10-30 Bruno Haible <bruno@clisp.org>
* lib/autoconf/types.m4 (_AC_TYPE_LONG_LONG_SNIPPET): New macro,
extracted from AC_TYPE_LONG_LONG_INT and AC_TYPE_UNSIGNED_LONG_LONG_INT.
(AC_TYPE_LONG_LONG_INT, AC_TYPE_UNSIGNED_LONG_LONG_INT): Use it.
Fixes problem with Sun C 5.[0-8] in 32-bit mode, reported in
<http://lists.gnu.org/archive/html/autoconf-patches/2007-10/msg00210.html>
Suggested by Paul Eggert.
2007-10-28 Jim Meyering <meyering@redhat.com>
* README-hacking: Autoconf, Automake, and Perl are required to build.

63
lib/autoconf/types.m4
View File

@ -465,25 +465,50 @@ You should use `AC_TYPE_LONG_DOUBLE' or `AC_TYPE_LONG_DOUBLE_WIDER' instead.]
)
# _AC_TYPE_LONG_LONG_SNIPPET
# --------------------------
# Expands to a C program that can be used to test for simultaneous support
# of 'long long' and 'unsigned long long'. We don't want to say that
# 'long long' is available if 'unsigned long long' is not, or vice versa,
# because too many programs rely on the symmetry between signed and unsigned
# integer types (excluding 'bool').
AC_DEFUN([_AC_TYPE_LONG_LONG_SNIPPET],
[
AC_LANG_PROGRAM(
[[/* Test preprocessor. */
#if ! (-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
error in preprocessor;
#endif
#if ! (18446744073709551615ULL <= -1ull)
error in preprocessor;
#endif
/* 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)];
typedef int b[(18446744073709551615ULL <= (unsigned long long int) -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));]])
])
# AC_TYPE_LONG_LONG_INT
# ---------------------
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(
[[#if ! (-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
error in preprocessor;
#endif
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_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.
@ -524,17 +549,7 @@ AC_DEFUN([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_LANG_PROGRAM(
[[#if ! (18446744073709551615ULL <= -1ull)
error in preprocessor;
#endif
unsigned long long int ull = 18446744073709551615ULL;
typedef int a[(18446744073709551615ULL <= (unsigned long long int) -1
? 1 : -1)];
int i = 63;]],
[[unsigned long long int ullmax = 18446744073709551615ull;
return (ull << 63 | ull >> 63 | ull << i | ull >> i
| ullmax / ull | ullmax % ull);]])],
[_AC_TYPE_LONG_LONG_SNIPPET],
[ac_cv_type_unsigned_long_long_int=yes],
[ac_cv_type_unsigned_long_long_int=no])])
if test $ac_cv_type_unsigned_long_long_int = yes; then