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installed non-width patches imported from gnulib
|
From: |
Paul Eggert |
|
Subject: |
installed non-width patches imported from gnulib |
|
Date: |
Sat, 08 Apr 2006 14:48:25 -0700 |
|
User-agent: |
Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) |
To help simplify the discussion of the integer-width macros I
installed the following, which are all the other macros imported from
gnulib, and which seem to be noncontroversial. Perhaps the
integer-width stuff should wait until after Autoconf 2.60 comes out,
since it seems to be somewhat of a can of worms.
2006-04-08 Paul Eggert <address@hidden>
Import macros from gnulib (often changing their name).
* NEWS: AC_C_TYPE_LONG_DOUBLE is now obsolete.
New macros AC_CHECK_DECLS_ONCE, AC_CHECK_FUNCS_ONCE,
AC_CHECK_HEADERS_ONCE, AC_FUNC_STRTOLD, AC_HEADER_ASSERT,
AC_STRUCT_DIRENT_D_INO, AC_STRUCT_DIRENT_D_TYPE,
AC_TYPE_LONG_DOUBLE, AC_TYPE_LONG_DOUBLE_WIDER, AC_TYPE_INT8_T,
AC_TYPE_INT16_T, AC_TYPE_INT32_T, AC_TYPE_INT64_T,
AC_TYPE_INTMAX_T, AC_TYPE_INTPTR_T, AC_TYPE_LONG_LONG_INT,
AC_TYPE_UINT8_T, AC_TYPE_UINT16_T, AC_TYPE_UINT32_T,
AC_TYPE_UINT64_T, AC_TYPE_UINTMAX_T, AC_TYPE_UINTPTR_T,
AC_TYPE_UNSIGNED_LONG_LONG_INT, AC_USE_SYSTEM_EXTENSIONS.
The manual mentions Gnulib more prominently.
* doc/autoconf.texi (Gnulib): New node.
(Pointers): Add Gnulib URL.
(Particular Functions): Alphabetize. Add AC_FUNC_STRTOLD.
(Generic Functions): Add AC_CHECK_FUNCS_ONCE. Refer to new
Gnulib section.
(Particular Headers): Add AC_HEADER_ASSERT. For stdbool.h,
suggest a #define rather than a typedef for _Bool, and mention
Gnulib rather than trying to substitute stdbool code.
(Generic Headers): Add AC_CHECK_HEADERS_ONCE.
(Generic Declarations): Add AC_CHECK_DECLS_ONCE.
(Particular Structures): Add AC_STRUCT_DIRENT_D_INO,
AC_STRUCT_DIRENT_D_TYPE.
(Particular Types): Mention stdint.h and inttypes.h as standard
headers too.
Add AC_TYPE_INT8_T, AC_TYPE_INT16_T, AC_TYPE_INT32_T, AC_TYPE_INT64_T,
AC_TYPE_INTMAX_T, AC_TYPE_INTPTR_T, AC_TYPE_LONG_DOUBLE,
AC_TYPE_LONG_DOUBLE_WIDER, AC_TYPE_LONG_LONG_INT, AC_TYPE_UINT8_T,
AC_TYPE_UINT16_T, AC_TYPE_UINT32_T, AC_TYPE_UINT64_T,
AC_TYPE_UINTMAX_T, AC_TYPE_UINTPTR_T, AC_TYPE_UNSIGNED_LONG_LONG_INT.
(C Compiler): Move AC_C_LONG_DOUBLE to ...
(Obsolete Macros): here. Under AC_LONG_DOUBLE, mention
AC_TYPE_LONG_DOUBLE or AC_TYPE_LONG_DOUBLE_WIDER instead.
(Posix Variants): Add AC_USE_SYSTEM_EXTENSIONS.
(Coding Style). Don't mention m4_expand_once.
* lib/autoconf/c.m4 (AC_C_LONG_DOUBLE): Implement via
AC_TYPE_LONG_DOUBLE_WIDER. Now obsolete.
* lib/autoconf/functions.m4 (_AH_CHECK_FUNCS): New macro.
(AC_CHECK_FUNCS): Use it.
(AC_CHECK_FUNCS_ONCE, AC_FUNC_STRTOLD): New macros.
(AC_FUNC_WAIT3): "the Open Group standards" -> "POSIX".
* lib/autoconf/general.m4 (AC_CHECK_DECLS_ONCE): New macro.
* lib/autoconf/headers.m4 (AC_CHECK_HEADERS_ONCE): New macro.
(AC_HEADER_ASSERT): New macro.
(AC_HEADER_STDBOOL): Don't assume "#error" works.
Catch a bug in IBM AIX xlc compiler version 6.0.0.0.
Catch a bug in an HP-UX C compiler.
* lib/autoconf/specific.m4 (AC_USE_SYSTEM_EXTENSIONS): New macro.
* lib/autoconf/types.m4 (AC_TYPE_INTMAX_T. AC_TYPE_UINTMAX_T):
(AC_TYPE_INTPTR_T, AC_TYPE_UINTPTR_T. AC_TYPE_LONG_DOUBLE):
(AC_TYPE_LONG_DOUBLE_WIDER, AC_C_LONG_DOUBLE, AC_TYPE_LONG_LONG_INT):
(AC_TYPE_UNSIGNED_LONG_LONG_INT, _AC_TYPE_INT, _AC_TYPE_UNSIGNED_INT):
(_AC_STRUCT_DIRENT, AC_STRUCT_DIRENT_D_INO, AC_STRUCT_DIRENT_D_TYPE):
New macros.
Index: NEWS
===================================================================
RCS file: /cvsroot/autoconf/autoconf/NEWS,v
retrieving revision 1.357
diff -p -b -w -u -r1.357 NEWS
--- NEWS 5 Apr 2006 22:41:36 -0000 1.357
+++ NEWS 8 Apr 2006 21:43:16 -0000
@@ -35,6 +35,16 @@
** AC_C_TYPEOF
New macro to check for support of 'typeof' syntax a la GNU C.
+** AC_CHECK_DECLS_ONCE, AC_CHECK_FUNCS_ONCE, AC_CHECK_HEADERS_ONCE
+ New "once-only" variants of commonly-used macros, to make 'configure'
+ smaller and faster in common cases.
+
+** AC_FUNC_STRTOLD
+ New macro to check for strtold with C99 semantics.
+
+** AC_HEADER_ASSERT
+ New macro that lets builder disable assertions at 'configure'-time.
+
** AC_PATH_X
Now checks for X11/Xlib.h and XrmInitialize (X proper) rather than
X11/Intrinsic.h and XtMalloc (Xt).
@@ -62,6 +72,9 @@
ac_cv_prog_cc_c99 or ac_cv_prog_cc_c89 (whichever is valid, in
that order).
+** AC_STRUCT_DIRENT_D_INO, AC_STRUCT_DIRENT_D_TYPE
+ New macro for checking commonly-used members of struct dirent.
+
** AC_SUBST
The subtituted value can now contain newlines.
@@ -69,6 +82,20 @@
The substitution now occurs only when @variable@ is on a line by itself,
optionally surrounded by spaces and tabs. The whole line is replaced.
+** AC_TYPE_LONG_DOUBLE, AC_TYPE_LONG_DOUBLE_WIDER
+ New macros to check for long double, and whether it is wider than double.
+ The old macro AC_C_TYPE_LONG_DOUBLE has been marked as obsolete;
+ applications should switch to the new macro.
+
+** AC_TYPE_INT8_T, AC_TYPE_INT16_T, AC_TYPE_INT32_T, AC_TYPE_INT64_T,
+ AC_TYPE_INTMAX_T, AC_TYPE_INTPTR_T, AC_TYPE_LONG_LONG_INT, AC_TYPE_SSIZE_T,
+ AC_TYPE_UINT8_T, AC_TYPE_UINT16_T, AC_TYPE_UINT32_T, AC_TYPE_UINT64_T,
+ AC_TYPE_UINTMAX_T, AC_TYPE_UINTPTR_T, AC_TYPE_UNSIGNED_LONG_LONG_INT
+ New macros to check for C99 and POSIX types.
+
+** AC_USE_SYSTEM_EXTENSIONS
+ New macro to enable extensions to Posix.
+
** AH_HEADER
New macro which is defined to the name of the first declared config header
or undefined if no config headers have been declared yet.
@@ -99,6 +126,8 @@
New macros for configuring installation of Erlang libraries:
AC_ERLANG_SUBST_INSTALL_LIB_DIR, AC_ERLANG_SUBST_INSTALL_LIB_SUBDIR.
+** The manual now mentions Gnulib more prominently.
+
** New macros to support Objective C.
AC_PROG_OBJC, AC_PROG_OBJCPP.
Index: doc/autoconf.texi
===================================================================
RCS file: /cvsroot/autoconf/autoconf/doc/autoconf.texi,v
retrieving revision 1.988
diff -p -b -w -u -r1.988 autoconf.texi
--- doc/autoconf.texi 7 Apr 2006 18:00:55 -0000 1.988
+++ doc/autoconf.texi 8 Apr 2006 21:43:17 -0000
@@ -279,6 +279,7 @@ published by the Free Software Foundatio
The @acronym{GNU} Build System
* Automake:: Escaping Makefile hell
+* Gnulib:: The @acronym{GNU} portability library
* Libtool:: Building libraries portably
* Pointers:: More info on the @acronym{GNU} build system
@@ -709,6 +710,7 @@ entire @acronym{GNU} build system for yo
@menu
* Automake:: Escaping Makefile hell
+* Gnulib:: The @acronym{GNU} portability library
* Libtool:: Building libraries portably
* Pointers:: More info on the @acronym{GNU} build system
@end menu
@@ -755,6 +757,32 @@ The benefits of Automake increase for la
with subdirectories), but even for small programs the added convenience
and portability can be substantial. And that's not address@hidden
address@hidden Gnulib
address@hidden Gnulib
+
address@hidden software has a well-deserved reputation for running on
+many different types of systems. While our primary goal is to write
+software for the @acronym{GNU} system, many users and developers have
+been introduced to us through the systems that they were already using.
+
address@hidden Gnulib
+Gnulib is a central location for common @acronym{GNU} code, intended to
+be shared among free software packages. Its components are typically
+shared at the source level, rather than being a library that gets built,
+installed, and linked against. The idea is to copy files from Gnulib
+into your own source tree. There is no distribution tarball; developers
+should just grab source modules from the repository. The source files
+are available online, under various licenses, mostly @acronym{GNU}
address@hidden or @acronym{GNU} @acronym{LGPL}.
+
+Gnulib modules typically contain C source code along with Autoconf
+macros used to configure the source code. For example, the Gnulib
address@hidden module implements a @file{stdbool.h} header that nearly
+conforms to C99, even on old-fashioned hosts that lack @file{stdbool.h}.
+This module contains a source file for the replacement header, along
+with an Autoconf macro that arranges to use the replacement header on
+old-fashioned systems.
+
@node Libtool
@section Libtool
@@ -802,7 +830,8 @@ the @acronym{GNU} build tools.
The home pages for
@uref{http://www.gnu.org/software/autoconf/, Autoconf},
address@hidden://www.gnu.org/software/automake/, Automake}, and
address@hidden://www.gnu.org/software/automake/, Automake},
address@hidden://www.gnu.org/software/gnulib/, Gnulib}, and
@uref{http://www.gnu.org/software/libtool/, Libtool}.
@item Automake Manual
@@ -4539,17 +4568,6 @@ If the @code{strcoll} function exists an
definitions of @code{strcoll} that should not be used.
@end defmac
address@hidden AC_FUNC_STRTOD
address@hidden
address@hidden POW_LIB
address@hidden @fuindex strtod
address@hidden @code{strtod}
-If the @code{strtod} function does not exist or doesn't work correctly,
-ask for an @code{AC_LIBOBJ} replacement of @samp{strtod}. In this case,
-because @file{strtod.c} is likely to need @samp{pow}, set the output
-variable @code{POW_LIB} to the extra library needed.
address@hidden defmac
-
@defmac AC_FUNC_STRERROR_R
@acindex{FUNC_STRERROR_R}
@cvindex HAVE_STRERROR_R
@@ -4576,6 +4594,24 @@ Check for @code{strftime} in the @file{i
Then, if @code{strftime} is available, define @code{HAVE_STRFTIME}.
@end defmac
address@hidden AC_FUNC_STRTOD
address@hidden
address@hidden POW_LIB
address@hidden @fuindex strtod
address@hidden @code{strtod}
+If the @code{strtod} function does not exist or doesn't work correctly,
+ask for an @code{AC_LIBOBJ} replacement of @samp{strtod}. In this case,
+because @file{strtod.c} is likely to need @samp{pow}, set the output
+variable @code{POW_LIB} to the extra library needed.
address@hidden defmac
+
address@hidden AC_FUNC_STRTOLD
address@hidden
address@hidden @code{strtold}
+If the @code{strtold} function exists and conforms to C99, define
address@hidden
address@hidden defmac
+
@defmac AC_FUNC_STRNLEN
@acindex{FUNC_STRNLEN}
@cvindex HAVE_STRNLEN
@@ -4657,6 +4693,17 @@ execute when one of the functions is fou
functions is not found.
@end defmac
address@hidden AC_CHECK_FUNCS_ONCE (@address@hidden)
address@hidden
address@hidden address@hidden
+For each @var{function} enumerated in the blank-or-newline-separated argument
+list, define @address@hidden (in all capitals) if it is available.
+This is a once-only variant of @code{AC_CHECK_FUNCS}. It generates the
+checking code at most once, so that @command{configure} is smaller and
+faster; but the checks cannot be conditionalized and are always done once,
+early during the @command{configure} run.
address@hidden defmac
+
@sp 1
Autoconf follows a philosophy that was formed over the years by those
@@ -4666,10 +4713,7 @@ environment. Some functions may be miss
package must be ready to replace them.
Suitable replacements for many such problem functions are available from
address@hidden://www.gnu.org/software/gnulib/, Gnulib}, which aims to
-provide a centralized repository of such portability functions (among
-other things). The source files are available online, under various
-licenses, mostly @acronym{GNU} @acronym{GPL} or @acronym{GNU} @acronym{LGPL}.
+Gnulib (@pxref{Gnulib}).
@defmac AC_LIBOBJ (@var{function})
@acindex{LIBOBJ}
@@ -4782,6 +4826,12 @@ problems they cause. By definition, thi
additions. Please help us keeping it as complete as possible.
@table @asis
+
address@hidden @file{limits.h}
+C99 says that @file{limits.h} defines @code{LLONG_MIN},
address@hidden, and @code{ULLONG_MAX}, but many almost-C99
+environments (e.g., default GCC 4.0.2 + glibc 2.4) do not define them.
+
@item @file{inttypes.h} vs.@: @file{stdint.h}
@hdrindex{inttypes.h}
@hdrindex{stdint.h}
@@ -4889,6 +4939,15 @@ AC_CHECK_HEADERS([X11/extensions/scrnsav
These macros check for particular system header files---whether they
exist, and in some cases whether they declare certain symbols.
address@hidden AC_HEADER_ASSERT
address@hidden
address@hidden NDEBUG
address@hidden
+Check whether to enable assertions in the style of @file{assert.h}.
+Assertions are enabled by default, but the user can override this by
+invoking @command{configure} with the @option{--disable-assert} option.
address@hidden defmac
+
@defmac AC_HEADER_DIRENT
@acindex{HEADER_DIRENT}
@cvindex HAVE_DIRENT_H
@@ -4940,6 +4999,9 @@ the length of a directory entry name by
@code{struct dirent} to the @code{NAMLEN} macro.
This macro also checks for the SCO Xenix @file{dir} and @file{x} libraries.
+
+Also see @code{AC_STRUCT_DIRENT_D_INO} and
address@hidden (@pxref{Particular Structures}).
@end defmac
@defmac AC_HEADER_MAJOR
@@ -4995,7 +5057,7 @@ Amdahl UTS and Motorola System V/88.
@cvindex HAVE__BOOL
@hdrindex{stdbool.h}
@hdrindex{system.h}
-If @file{stdbool.h} exists and is conformant to C99, define
+If @file{stdbool.h} exists and conforms to C99, define
@code{HAVE_STDBOOL_H} to 1; if the type @code{_Bool} is defined, define
@code{HAVE__BOOL} to 1. To fulfill the C99 requirements, your
@file{system.h} could contain the following code:
@@ -5008,7 +5070,7 @@ If @file{stdbool.h} exists and is confor
# ifdef __cplusplus
typedef bool _Bool;
# else
-typedef unsigned char _Bool;
+# define _Bool signed char
# endif
# endif
# define bool _Bool
@@ -5018,37 +5080,10 @@ typedef unsigned char _Bool;
#endif
@end verbatim
-Alternatively you can construct an output variable that includes only
-those headers and definitions needed. For example:
+Alternatively you can use the @samp{stdbool} package of Gnulib
+(@pxref{Gnulib}); it packages the above code into a replacement header
+and contains a few other bells and whistles.
address@hidden
-AC_HEADER_STDBOOL
-AC_SUBST([stdbool])
-if test "x$ac_cv_header_stdbool_h" = xyes; then
- stdbool='
-#include <stdbool.h>
-'
-else
- if test "x$ac_cv_type__Bool" != xyes; then
- stdbool='
-#ifdef __cplusplus
-typedef bool _Bool;
-#else
-typedef unsigned char _Bool;
-#endif
-'
- else
- stdbool='
-'
- fi
- stdbool=$stdbool'
-#define bool _Bool
-#define false 0
-#define true 1
-#define __bool_true_false_are_defined 1
-'
-fi
address@hidden verbatim
@end defmac
@@ -5299,6 +5334,21 @@ AC_CHECK_HEADERS([bar.h], [], [],
])
@end verbatim
+The following variant generates smaller, faster @command{configure}
+files if you do not need the full power of @code{AC_CHECK_HEADERS}.
+
address@hidden AC_CHECK_HEADERS_ONCE (@address@hidden)
address@hidden
address@hidden address@hidden
+For each given system header file @var{header-file} in the
+blank-separated argument list that exists, define
address@hidden@var{header-file}} (in all capitals).
+This is a once-only variant of @code{AC_CHECK_HEADERS}. It generates the
+checking code at most once, so that @command{configure} is smaller and
+faster; but the checks cannot be conditionalized and are always done once,
+early during the @command{configure} run.
address@hidden defmac
+
@node Declarations
@section Declarations
@cindex Declaration, checking
@@ -5384,6 +5434,18 @@ your files may be used without being con
the configuration. In most cases the traditional approach is enough.
@end defmac
address@hidden AC_CHECK_DECLS_ONCE (@var{symbols})
address@hidden
address@hidden address@hidden
+For each of the @var{symbols} (@emph{comma}-separated list), define
address@hidden@var{symbol}} (in all capitals) to @samp{1} if
address@hidden is declared in the default include files, otherwise to
address@hidden This is a once-only variant of @code{AC_CHECK_DECLS}. It
+generates the checking code at most once, so that @command{configure} is
+smaller and faster; but the checks cannot be conditionalized and are
+always done once, early during the @command{configure} run.
address@hidden defmac
+
@node Structures
@section Structures
@@ -5405,6 +5467,28 @@ member you need, then you can use the ge
The following macros check for certain structures or structure members.
address@hidden AC_STRUCT_DIRENT_D_INO
address@hidden
address@hidden HAVE_STRUCT_DIRENT_D_INO
+Perform all the actions of @code{AC_HEADER_DIRENT} (@pxref{Particular
+Headers}). Then, if @code{struct dirent} contains a @code{d_ino}
+member, define @code{HAVE_STRUCT_DIRENT_D_INO}.
+
address@hidden indicates only the presence of
address@hidden, not whether its contents are always reliable.
+Traditionally, a zero @code{d_ino} indicated a deleted directory entry,
+though modern systems hide this detail from the user and never return
+zero @code{d_ino} values.
address@hidden defmac
+
address@hidden AC_STRUCT_DIRENT_D_TYPE
address@hidden
address@hidden HAVE_STRUCT_DIRENT_D_TYPE
+Perform all the actions of @code{AC_HEADER_DIRENT} (@pxref{Particular
+Headers}). Then, if @code{struct dirent} contains a @code{d_type}
+member, define @code{HAVE_STRUCT_DIRENT_D_TYPE}.
address@hidden defmac
+
@defmac AC_STRUCT_ST_BLKSIZE
@acindex{STRUCT_ST_BLKSIZE}
@cvindex HAVE_STRUCT_STAT_ST_BLKSIZE
@@ -5528,8 +5612,15 @@ use a general type-check macro.
@hdrindex{sys/types.h}
@hdrindex{stdlib.h}
address@hidden
address@hidden
These macros check for particular C types in @file{sys/types.h},
address@hidden and others, if they exist.
address@hidden, @file{stdint.h}, @file{inttypes.h} and others, if they
+exist.
+
+The Gnulib @code{stdint} module is an alternate way to define many of
+these symbols; it is useful if you prefer your code to assume a
+C99-or-better environment. @xref{Gnulib}.
@defmac AC_TYPE_GETGROUPS
@acindex{TYPE_GETGROUPS}
@@ -5538,6 +5629,79 @@ Define @code{GETGROUPS_T} to be whicheve
is the base type of the array argument to @code{getgroups}.
@end defmac
address@hidden AC_TYPE_INT8_T
address@hidden
address@hidden HAVE_INT8_T
address@hidden int8_t
+If @file{stdint.h} or @file{inttypes.h} defines the type @code{int8_t},
+define @code{HAVE_INT8_T}. Otherwise, define @code{int8_t} to a signed
+integer type that is exactly 8 bits wide and that uses two's complement
+representation, if such a type exists.
address@hidden defmac
+
address@hidden AC_TYPE_INT16_T
address@hidden
address@hidden HAVE_INT16_T
address@hidden int16_t
+This is like @code{AC_TYPE_INT8_T}, except for 16-bit integers.
address@hidden defmac
+
address@hidden AC_TYPE_INT32_T
address@hidden
address@hidden HAVE_INT32_T
address@hidden int32_t
+This is like @code{AC_TYPE_INT8_T}, except for 32-bit integers.
address@hidden defmac
+
address@hidden AC_TYPE_INT64_T
address@hidden
address@hidden HAVE_INT64_T
address@hidden int64_t
+This is like @code{AC_TYPE_INT8_T}, except for 64-bit integers.
address@hidden defmac
+
address@hidden AC_TYPE_INTMAX_T
address@hidden
address@hidden HAVE_INTMAX_T
address@hidden intmax_t
+If @file{stdint.h} or @file{inttypes.h} defines the type @code{intmax_t},
+define @code{HAVE_INTMAX_T}. Otherwise, define @code{intmax_t} to the
+widest signed integer type.
address@hidden defmac
+
address@hidden AC_TYPE_INTPTR_T
address@hidden
address@hidden HAVE_INTPTR_T
address@hidden intptr_t
+If @file{stdint.h} or @file{inttypes.h} defines the type @code{intptr_t},
+define @code{HAVE_INTPTR_T}. Otherwise, define @code{intptr_t} to a
+signed integer type wide enough to hold a pointer, if such a type
+exists.
address@hidden defmac
+
address@hidden AC_TYPE_LONG_DOUBLE
address@hidden
address@hidden HAVE_LONG_DOUBLE
+If the C compiler supports a working @code{long double} type, define
address@hidden The @code{long double} type might have the
+same range and precision as @code{double}.
address@hidden defmac
+
address@hidden AC_TYPE_LONG_DOUBLE_WIDER
address@hidden
address@hidden HAVE_LONG_DOUBLE_WIDER
+If the C compiler supports a working @code{long double} type with more
+range or precision than the @code{double} type, define
address@hidden
address@hidden defmac
+
address@hidden AC_TYPE_LONG_LONG_INT
address@hidden
address@hidden HAVE_LONG_LONG_INT
+If the C compiler supports a working @code{long long int} type, define
address@hidden
address@hidden defmac
+
@defmac AC_TYPE_MBSTATE_T
@acindex{TYPE_MBSTATE_T}
@cvindex mbstate_t
@@ -5592,6 +5756,12 @@ hup_handler ()
Equivalent to @samp{AC_CHECK_TYPE([size_t], [unsigned int])}.
@end defmac
address@hidden AC_TYPE_SSIZE_T
address@hidden
address@hidden ssize_t
+Equivalent to @samp{AC_CHECK_TYPE([ssize_t], [int])}.
address@hidden defmac
+
@defmac AC_TYPE_UID_T
@acindex{TYPE_UID_T}
@cvindex uid_t
@@ -5600,6 +5770,63 @@ If @code{uid_t} is not defined, define @
@code{gid_t} to be @code{int}.
@end defmac
address@hidden AC_TYPE_UINT8_T
address@hidden
address@hidden HAVE_UINT8_T
address@hidden uint8_t
+If @file{stdint.h} or @file{inttypes.h} defines the type @code{uint8_t},
+define @code{HAVE_UINT8_T}. Otherwise, define @code{uint8_t} to an
+unsigned integer type that is exactly 8 bits wide, if such a type
+exists.
address@hidden defmac
+
address@hidden AC_TYPE_UINT16_T
address@hidden
address@hidden HAVE_UINT16_T
address@hidden uint16_t
+This is like @code{AC_TYPE_UINT8_T}, except for 16-bit unsigned integers.
address@hidden defmac
+
address@hidden AC_TYPE_UINT32_T
address@hidden
address@hidden HAVE_UINT32_T
address@hidden uint32_t
+This is like @code{AC_TYPE_UINT8_T}, except for 32-bit unsigned integers.
address@hidden defmac
+
address@hidden AC_TYPE_UINT64_T
address@hidden
address@hidden HAVE_UINT64_T
address@hidden uint64_t
+This is like @code{AC_TYPE_UINT8_T}, except for 64-bit unsigned integers.
address@hidden defmac
+
address@hidden AC_TYPE_UINTMAX_T
address@hidden
address@hidden HAVE_UINTMAX_T
address@hidden uintmax_t
+If @file{stdint.h} or @file{inttypes.h} defines the type @code{uintmax_t},
+define @code{HAVE_UINTMAX_T}. Otherwise, define @code{uintmax_t} to the
+widest unsigned integer type.
address@hidden defmac
+
address@hidden AC_TYPE_UINTPTR_T
address@hidden
address@hidden HAVE_UINTPTR_T
address@hidden uintptr_t
+If @file{stdint.h} or @file{inttypes.h} defines the type @code{uintptr_t},
+define @code{HAVE_UINTPTR_T}. Otherwise, define @code{uintptr_t} to an
+unsigned integer type wide enough to hold a pointer, if such a type
+exists.
address@hidden defmac
+
address@hidden AC_TYPE_UNSIGNED_LONG_LONG_INT
address@hidden
address@hidden HAVE_UNSIGNED_LONG_LONG_INT
+If the C compiler supports a working @code{unsigned long long int} type,
+define @code{HAVE_UNSIGNED_LONG_LONG_INT}.
address@hidden defmac
+
@node Generic Types
@subsection Generic Type Checks
@@ -6045,14 +6272,6 @@ If the C type @code{char} is unsigned, d
unless the C compiler predefines it.
@end defmac
address@hidden AC_C_LONG_DOUBLE
address@hidden
address@hidden HAVE_LONG_DOUBLE
-If the C compiler supports a working @code{long double} type with more
-range or precision than the @code{double} type, define
address@hidden
address@hidden defmac
-
@defmac AC_C_STRINGIZE
@acindex{C_STRINGIZE}
@cvindex HAVE_STRINGIZE
@@ -6749,6 +6968,23 @@ If on Minix, define @code{_MINIX} and @c
facilities. Should be called before any macros that run the C compiler.
@end defmac
address@hidden AC_USE_SYSTEM_EXTENSIONS
address@hidden
address@hidden _ALL_SOURCE
address@hidden _GNU_SOURCE
address@hidden _MINIX
address@hidden _POSIX_1_SOURCE
address@hidden _POSIX_PTHREAD_SEMANTICS
address@hidden _POSIX_SOURCE
address@hidden __EXTENSIONS__
+If possible, enable extensions to Posix on hosts that normally disable
+the extensions, typically due to standards-conformance namespace issues.
+This may involve defining @code{__EXTENSIONS__} and
address@hidden, which are macros used by Solaris. This
+macro also has the combined effects of @code{AC_GNU_SOURCE},
address@hidden, and @code{AC_MINIX}.
address@hidden defmac
+
@node Erlang Libraries
@section Erlang Libraries
@@ -10004,8 +10240,8 @@ by setting @address@hidden,
But since there is a macro named @code{AC_SUBST_FILE}, it was just
impossible to @samp{AC_SUBST(FILE)}! In this case,
@code{AC_SUBST(@var{symbol})} or @code{_AC_SUBST(@var{symbol})} should
-have been used (yes, with the parentheses)@dots{}or better yet, high-level
-macros such as @code{AC_EXPAND_ONCE}.
+have been used (yes, with the parentheses).
address@hidden or better yet, high-level macros such as @code{m4_expand_once}
No Autoconf macro should ever enter the user-variable name space; i.e.,
except for the variables that are the actual result of running the
@@ -15045,6 +15281,17 @@ removed because of limited usefulness
This macro is obsolete; it does nothing.
@end defmac
address@hidden AC_C_LONG_DOUBLE
address@hidden
address@hidden HAVE_LONG_DOUBLE
+If the C compiler supports a working @code{long double} type with more
+range or precision than the @code{double} type, define
address@hidden
+
+You should use @code{AC_TYPE_LONG_DOUBLE} or
address@hidden instead. @xref{Particular Types}.
address@hidden defmac
+
@defmac AC_CANONICAL_SYSTEM
@acindex{CANONICAL_SYSTEM}
Determine the system type and set output variables to the names of the
@@ -15429,7 +15676,12 @@ Use the generic macro @samp{AC_CHECK_SIZ
@defmac AC_LONG_DOUBLE
@acindex{LONG_DOUBLE}
address@hidden
+If the C compiler supports a working @code{long double} type with more
+range or precision than the @code{double} type, define
address@hidden
+
+You should use @code{AC_TYPE_LONG_DOUBLE} or
address@hidden instead. @xref{Particular Types}.
@end defmac
@defmac AC_LONG_FILE_NAMES
Index: lib/autoconf/c.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/c.m4,v
retrieving revision 1.220
diff -p -b -w -u -r1.220 c.m4
--- lib/autoconf/c.m4 6 Apr 2006 11:24:00 -0000 1.220
+++ lib/autoconf/c.m4 8 Apr 2006 21:43:17 -0000
@@ -1275,42 +1275,6 @@ fi
])# AC_C_CHAR_UNSIGNED
-# AC_C_LONG_DOUBLE
-# ----------------
-AC_DEFUN([AC_C_LONG_DOUBLE],
-[AC_CACHE_CHECK(
- [for working long double with more range or precision than double],
- [ac_cv_c_long_double],
- [AC_COMPILE_IFELSE(
- [AC_LANG_BOOL_COMPILE_TRY(
- [[#include <float.h>
- long double const a[] =
- {
- 0.0L, DBL_MIN, DBL_MAX, DBL_EPSILON,
- LDBL_MIN, LDBL_MAX, LDBL_EPSILON
- };
- long double
- f (long double x)
- {
- return ((x + (unsigned long int) 10) * (-1 / x) + a[0]
- + (x ? f (x) : 'c'));
- }
- ]],
- [[(0 < ((DBL_MAX_EXP < LDBL_MAX_EXP)
- + (DBL_MANT_DIG < LDBL_MANT_DIG)
- - (LDBL_MAX_EXP < DBL_MAX_EXP)
- - (LDBL_MANT_DIG < DBL_MANT_DIG)))
- && (int) LDBL_EPSILON == 0
- ]])],
- ac_cv_c_long_double=yes,
- ac_cv_c_long_double=no)])
-if test $ac_cv_c_long_double = yes; then
- AC_DEFINE(HAVE_LONG_DOUBLE, 1,
- [Define to 1 if long double works and has more range or precision
than double.])
-fi
-])# AC_C_LONG_DOUBLE
-
-
# AC_C_BIGENDIAN ([ACTION-IF-TRUE], [ACTION-IF-FALSE], [ACTION-IF-UNKNOWN])
# -------------------------------------------------------------------------
AC_DEFUN([AC_C_BIGENDIAN],
Index: lib/autoconf/functions.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/functions.m4,v
retrieving revision 1.97
diff -p -b -w -u -r1.97 functions.m4
--- lib/autoconf/functions.m4 3 Apr 2006 03:18:39 -0000 1.97
+++ lib/autoconf/functions.m4 8 Apr 2006 21:43:17 -0000
@@ -75,12 +75,18 @@ AS_VAR_POPDEF([ac_var])dnl
])# AC_CHECK_FUNC
+# _AH_CHECK_FUNCS(FUNCTION...)
+# ----------------------------
+m4_define([_AH_CHECK_FUNCS],
+[m4_foreach_w([AC_Func], [$1],
+ [AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([AC_Func])),
+ [Define to 1 if you have the `]m4_defn([AC_Func])[' function.])])])
+
+
# AC_CHECK_FUNCS(FUNCTION..., [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
# ---------------------------------------------------------------------
AC_DEFUN([AC_CHECK_FUNCS],
-[m4_foreach_w([AC_Func], [$1],
- [AH_TEMPLATE(AS_TR_CPP(HAVE_[]AC_Func),
- [Define to 1 if you have the `]AC_Func[' function.])])dnl
+[_AH_CHECK_FUNCS([$1])dnl
for ac_func in $1
do
AC_CHECK_FUNC($ac_func,
@@ -90,6 +96,26 @@ done
])
+# AC_CHECK_FUNCS_ONCE(FUNCTION...)
+# --------------------------------
+AC_DEFUN([AC_CHECK_FUNCS_ONCE],
+[
+ _AH_CHECK_FUNCS([$1])
+ m4_foreach_w([AC_Func], [$1],
+ [AC_DEFUN([_AC_Func_]m4_defn([AC_Func]),
+ [m4_divert_text([INIT_PREPARE],
+ [ac_func_list="$ac_func_list AC_Func"])
+ _AC_FUNCS_EXPANSION])
+ AC_REQUIRE([_AC_Func_]m4_defn([AC_Func]))])
+])
+m4_define([_AC_FUNCS_EXPANSION],
+[
+ m4_divert_text([DEFAULTS], [ac_func_list=])
+ AC_CHECK_FUNCS([$ac_func_list])
+ m4_define([_AC_FUNCS_EXPANSION], [])
+])
+
+
# AC_REPLACE_FUNCS(FUNCTION...)
# -----------------------------
AC_DEFUN([AC_REPLACE_FUNCS],
@@ -1499,6 +1525,36 @@ fi
])
+# AC_FUNC_STRTOLD
+# ---------------
+AC_DEFUN([AC_FUNC_STRTOLD],
+[
+ AC_CACHE_CHECK([whether strtold conforms to C99],
+ [ac_cv_func_strtold],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[/* On HP-UX before 11.23, strtold returns a struct instead of
+ long double. Reject implementations like that, by requiring
+ compatibility with the C99 prototype. */
+# include <stdlib.h>
+ static long double (*p) (char const *, char **) = strtold;
+ static long double
+ test (char const *nptr, char **endptr)
+ {
+ long double r;
+ r = strtold (nptr, endptr);
+ return r;
+ }]],
+ [[return test ("1.0", NULL) != 1 || p ("1.0", NULL) != 1;]])],
+ [ac_cv_func_strtold=yes],
+ [ac_cv_func_strtold=no])])
+ if test $ac_cv_func_strtold = yes; then
+ AC_DEFINE([HAVE_STRTOLD], 1,
+ [Define to 1 if strtold exists and conforms to C99.])
+ fi
+])# AC_FUNC_STRTOLD
+
+
# AU::AM_FUNC_STRTOD
# ------------------
AU_ALIAS([AM_FUNC_STRTOD], [AC_FUNC_STRTOD])
@@ -1894,7 +1950,7 @@ AU_ALIAS([AC_VPRINTF], [AC_FUNC_VPRINTF]
AN_FUNCTION([wait3], [AC_FUNC_WAIT3])
AC_DEFUN([AC_FUNC_WAIT3],
[AC_DIAGNOSE([obsolete],
-[$0: `wait3' is being removed from the Open Group standards.
+[$0: `wait3' has been removed from POSIX.
Remove this `AC_FUNC_WAIT3' and adjust your code to use `waitpid' instead.])dnl
AC_CACHE_CHECK([for wait3 that fills in rusage],
[ac_cv_func_wait3_rusage],
Index: lib/autoconf/general.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/general.m4,v
retrieving revision 1.902
diff -p -b -w -u -r1.902 general.m4
--- lib/autoconf/general.m4 8 Apr 2006 17:59:57 -0000 1.902
+++ lib/autoconf/general.m4 8 Apr 2006 21:43:17 -0000
@@ -2490,6 +2490,18 @@ $3],
])# AC_CHECK_DECLS
+# AC_CHECK_DECLS_ONCE(SYMBOLS)
+# ----------------------------
+# Like AC_CHECK_DECLS(SYMBOLS), but do it at most once.
+AC_DEFUN([AC_CHECK_DECLS_ONCE],
+[
+ m4_foreach([AC_Symbol], [$1],
+ [AC_DEFUN([_AC_Check_Decl_]m4_defn([AC_Symbol]),
+ [AC_CHECK_DECLS(m4_defn([AC_Symbol]))])
+ AC_REQUIRE([_AC_Check_Decl_]m4_defn([AC_Symbol]))])
+])
+
+
## ---------------------------------- ##
## Replacement of library functions. ##
@@ -2568,8 +2580,8 @@ AC_SUBST([LTLIBOBJS], [$ac_ltlibobjs])
## ----------------------------------- ##
-# _AC_COMPUTE_INT_COMPILE(EXPRESSION, VARIABLE, [INCLUDES], [IF-FAILS])
-# ---------------------------------------------------------------------
+# _AC_COMPUTE_INT_COMPILE(EXPRESSION, VARIABLE, PROLOGUE, [IF-FAILS])
+# -------------------------------------------------------------------
# Compute the integer EXPRESSION and store the result in the VARIABLE.
# Works OK if cross compiling, but assumes twos-complement arithmetic.
m4_define([_AC_COMPUTE_INT_COMPILE],
@@ -2612,15 +2624,15 @@ esac[]dnl
])# _AC_COMPUTE_INT_COMPILE
-# _AC_COMPUTE_INT_RUN(EXPRESSION, VARIABLE, [INCLUDES], [IF-FAILS])
-# -----------------------------------------------------------------
+# _AC_COMPUTE_INT_RUN(EXPRESSION, VARIABLE, PROLOGUE, [IF-FAILS])
+# ---------------------------------------------------------------
# Store the evaluation of the integer EXPRESSION in VARIABLE.
m4_define([_AC_COMPUTE_INT_RUN],
[_AC_RUN_IFELSE([AC_LANG_INT_SAVE([$3], [$1])],
[$2=`cat conftest.val`], [$4])])
-# _AC_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
+# _AC_COMPUTE_INT(EXPRESSION, VARIABLE, PROLOGUE, IF-FAILS)
# ---------------------------------------------------------
m4_define([_AC_COMPUTE_INT],
[AC_LANG_COMPILER_REQUIRE()dnl
Index: lib/autoconf/headers.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/headers.m4,v
retrieving revision 1.47
diff -p -b -w -u -r1.47 headers.m4
--- lib/autoconf/headers.m4 4 Apr 2006 16:13:47 -0000 1.47
+++ lib/autoconf/headers.m4 8 Apr 2006 21:43:17 -0000
@@ -1,7 +1,7 @@
# This file is part of Autoconf. -*- Autoconf -*-
# Checking for headers.
#
-# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2006 Free Software
+# Copyright (C) 1988, 1999, 2000, 2001, 2002, 2003, 2004, 2006 Free Software
# Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
@@ -94,8 +94,8 @@ AC_DEFUN([AC_CHECK_HEADER],
# _AC_CHECK_HEADER_MONGREL(HEADER-FILE,
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
-# [INCLUDES])
-# --------------------------------------------------------------
+# [INCLUDES = DEFAULT-INCLUDES])
+# ------------------------------------------------------------------
# Check using both the compiler and the preprocessor. If they disagree,
# warn, and the preproc wins.
#
@@ -150,7 +150,7 @@ AS_VAR_POPDEF([ac_Header])dnl
# _AC_CHECK_HEADER_NEW(HEADER-FILE,
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
-# [INCLUDES])
+# [INCLUDES = DEFAULT-INCLUDES])
# --------------------------------------------------------------
# Check the compiler accepts HEADER-FILE. The INCLUDES are defaulted.
m4_define([_AC_CHECK_HEADER_NEW],
@@ -184,11 +184,11 @@ AS_VAR_POPDEF([ac_Header])dnl
# --------------------------------
m4_define([AH_CHECK_HEADERS],
[m4_foreach_w([AC_Header], [$1],
- [AH_TEMPLATE(AS_TR_CPP(HAVE_[]AC_Header),
- [Define to 1 if you have the <]AC_Header[> header file.])])])
+ [AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([AC_Header])),
+ [Define to 1 if you have the <]m4_defn([AC_Header])[> header file.])])])
-# AC_CHECK_HEADERS(HEADER-FILE...
+# AC_CHECK_HEADERS(HEADER-FILE...,
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
# [INCLUDES])
# ----------------------------------------------------------
@@ -204,6 +204,26 @@ done
])# AC_CHECK_HEADERS
+# AC_CHECK_HEADERS_ONCE(HEADER-FILE...)
+# -------------------------------------
+AC_DEFUN([AC_CHECK_HEADERS_ONCE],
+[
+ AH_CHECK_HEADERS([$1])
+ m4_foreach_w([AC_Header], [$1],
+ [AC_DEFUN([_AC_Header_]m4_quote(m4_translit(AC_Header, [./-], [___])),
+ [m4_divert_text([INIT_PREPARE],
+ [ac_header_list="$ac_header_list AC_Header"])
+ _AC_HEADERS_EXPANSION])
+ AC_REQUIRE([_AC_Header_]m4_quote(m4_translit(AC_Header, [./-], [___])))])
+])
+m4_define([_AC_HEADERS_EXPANSION],
+[
+ m4_divert_text([DEFAULTS], [ac_header_list=])
+ AC_CHECK_HEADERS([$ac_header_list])
+ m4_define([_AC_HEADERS_EXPANSION], [])
+])
+
+
## --------------------- ##
@@ -354,6 +374,19 @@ AN_HEADER([wctype.h], [AC_CHEC
## 4. Tests for specific headers. ##
## ------------------------------- ##
+# AC_HEADER_ASSERT
+# ----------------
+# Check whether to enable assertions.
+AC_DEFUN([AC_HEADER_ASSERT],
+[
+ AC_MSG_CHECKING([whether to enable assertions])
+ AC_ARG_ENABLE([assert],
+ [ --disable-assert turn off assertions],
+ [AC_MSG_RESULT([no])
+ AC_DEFINE(NDEBUG, 1, [Define to 1 if assertions should be disabled.])],
+ [AC_MSG_RESULT(yes)])
+])
+
# _AC_CHECK_HEADER_DIRENT(HEADER-FILE,
# [ACTION-IF-FOUND], [ACTION-IF-NOT_FOUND])
@@ -526,22 +559,22 @@ AC_DEFUN([AC_HEADER_STDBOOL],
[[
#include <stdbool.h>
#ifndef bool
-# error bool is not defined
+ "error: bool is not defined"
#endif
#ifndef false
-# error false is not defined
+ "error: false is not defined"
#endif
#if false
-# error false is not 0
+ "error: false is not 0"
#endif
#ifndef true
-# error true is not defined
+ "error: true is not defined"
#endif
#if true != 1
-# error true is not 1
+ "error: true is not 1"
#endif
#ifndef __bool_true_false_are_defined
-# error __bool_true_false_are_defined is not defined
+ "error: __bool_true_false_are_defined is not defined"
#endif
struct s { _Bool s: 1; _Bool t; } s;
@@ -558,10 +591,39 @@ AC_DEFUN([AC_HEADER_STDBOOL],
enum { j = false, k = true, l = false * true, m = true * 256 };
_Bool n[m];
char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+ char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
+# if defined __xlc__ || defined __GNUC__
+ /* Catch a bug in IBM AIX xlc compiler version 6.0.0.0
+ reported by James Lemley on 2005-10-05; see
+
http://lists.gnu.org/archive/html/bug-coreutils/2005-10/msg00086.html
+ This test is not quite right, since xlc is allowed to
+ reject this program, as the initializer for xlcbug is
+ not one of the forms that C requires support for.
+ However, doing the test right would require a run-time
+ test, and that would make cross-compilation harder.
+ Let us hope that IBM fixes the xlc bug, and also adds
+ support for this kind of constant expression. In the
+ meantime, this test will reject xlc, which is OK, since
+ our stdbool.h substitute should suffice. We also test
+ this with GCC, where it should work, to detect more
+ quickly whether someone messes up the test in the
+ future. */
+ char digs[] = "0123456789";
+ int xlcbug = 1 / (&(digs + 5)[-2 + (bool) 1] == &digs[4] ? 1 : -1);
+# endif
+ /* Catch a bug in an HP-UX C compiler. See
+ http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+ http://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
+ */
+ _Bool q = true;
+ _Bool *pq = &q;
]],
[[
- return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !j + !k + !l
- + !m + !n + !o);
+ *pq |= q;
+ *pq |= ! q;
+ /* Refer to every declared value, to avoid compiler optimizations. */
+ return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l
+ + !m + !n + !o + !p + !q + !pq);
]])],
[ac_cv_header_stdbool_h=yes],
[ac_cv_header_stdbool_h=no])])
Index: lib/autoconf/specific.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/specific.m4,v
retrieving revision 1.365
diff -p -b -w -u -r1.365 specific.m4
--- lib/autoconf/specific.m4 5 Apr 2006 20:55:14 -0000 1.365
+++ lib/autoconf/specific.m4 8 Apr 2006 21:43:17 -0000
@@ -125,7 +125,7 @@ m4_define([_AC_SYS_LARGEFILE_TEST_INCLUD
# _AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE,
# CACHE-VAR,
# DESCRIPTION,
-# [INCLUDES], [FUNCTION-BODY])
+# PROLOGUE, [FUNCTION-BODY])
# ----------------------------------------------------------
m4_define([_AC_SYS_LARGEFILE_MACRO_VALUE],
[AC_CACHE_CHECK([for $1 value needed for large files], [$3],
@@ -379,6 +379,41 @@ esac
matches *mingw32*])# AC_MINGW32
+# AC_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
+[
+ AC_BEFORE([$0], [AC_COMPILE_IFELSE])
+ AC_BEFORE([$0], [AC_RUN_IFELSE])
+
+ AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([AC_AIX])
+ AC_REQUIRE([AC_MINIX])
+
+ AH_VERBATIM([__EXTENSIONS__],
+[/* Enable extensions on Solaris. */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif])
+ AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
+ [ac_cv_safe_to_define___extensions__],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([
+# define __EXTENSIONS__ 1
+ AC_INCLUDES_DEFAULT])],
+ [ac_cv_safe_to_define___extensions__=yes],
+ [ac_cv_safe_to_define___extensions__=no])])
+ test $ac_cv_safe_to_define___extensions__ = yes &&
+ AC_DEFINE([__EXTENSIONS__])
+ AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
+])
+
+
## -------------------------- ##
Index: lib/autoconf/types.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/autoconf/types.m4,v
retrieving revision 1.36
diff -p -b -w -u -r1.36 types.m4
--- lib/autoconf/types.m4 5 Apr 2006 20:55:14 -0000 1.36
+++ lib/autoconf/types.m4 8 Apr 2006 21:43:17 -0000
@@ -1,6 +1,8 @@
# This file is part of Autoconf. -*- Autoconf -*-
# Type related macros: existence, sizeof, and structure members.
-# Copyright (C) 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+#
+# Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006 Free Software
+# Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -66,7 +68,7 @@
#
# AC_CHECK_TYPE(TYPE,
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
-# [INCLUDES])
+# [INCLUDES = DEFAULT-INCLUDES])
#
# In order to provide backward compatibility, the new scheme is
# implemented as _AC_CHECK_TYPE_NEW, the old scheme as _AC_CHECK_TYPE_OLD,
@@ -304,6 +306,204 @@ AU_DEFUN([AM_TYPE_PTRDIFF_T],
[AC_CHECK_TYPES(ptrdiff_t)])
+# AC_TYPE_INTMAX_T
+# -----------------
+AC_DEFUN([AC_TYPE_INTMAX_T],
+[
+ AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
+ AC_CHECK_TYPE([intmax_t],
+ [AC_DEFINE([HAVE_INTMAX_T], 1,
+ [Define to 1 if the system has the type `intmax_t'.])],
+ [test $ac_cv_type_long_long_int = yes \
+ && ac_type='long long int' \
+ || ac_type='long int'
+ AC_DEFINE_UNQUOTED([intmax_t], [$ac_type],
+ [Define to the widest signed integer type
+ if <stdint.h> and <inttypes.h> do not define.])])
+])
+
+
+# AC_TYPE_UINTMAX_T
+# -----------------
+AC_DEFUN([AC_TYPE_UINTMAX_T],
+[
+ AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
+ AC_CHECK_TYPE([uintmax_t],
+ [AC_DEFINE([HAVE_UINTMAX_T], 1,
+ [Define to 1 if the system has the type `uintmax_t'.])],
+ [test $ac_cv_type_unsigned_long_long_int = yes \
+ && ac_type='unsigned long long int' \
+ || ac_type='unsigned long int'
+ AC_DEFINE_UNQUOTED([uintmax_t], [$ac_type],
+ [Define to the widest unsigned integer type
+ if <stdint.h> and <inttypes.h> do not define.])])
+])
+
+
+# AC_TYPE_INTPTR_T
+# -----------------
+AC_DEFUN([AC_TYPE_INTPTR_T],
+[
+ AC_CHECK_TYPE([intptr_t],
+ [AC_DEFINE([HAVE_INTPTR_T], 1,
+ [Define to 1 if the system has the type `intptr_t'.])],
+ [for ac_type in 'int' 'long int' 'long long int'; do
+ AC_COMPILE_IFELSE(
+ [AC_LANG_BOOL_COMPILE_TRY(
+ [AC_INCLUDES_DEFAULT],
+ [[sizeof (void *) <= sizeof ($ac_type)]])],
+ [AC_DEFINE_UNQUOTED([intptr_t], [$ac_type],
+ [Define to the type of a signed integer type wide enough to
+ hold a pointer, if such a type exists, and if the system
+ does not define it.])
+ ac_type=])
+ test -z "$ac_type" && break
+ done])
+])
+
+
+# AC_TYPE_UINTPTR_T
+# -----------------
+AC_DEFUN([AC_TYPE_UINTPTR_T],
+[
+ AC_CHECK_TYPE([uintptr_t],
+ [AC_DEFINE([HAVE_UINTPTR_T], 1,
+ [Define to 1 if the system has the type `uintptr_t'.])],
+ [for ac_type in 'unsigned int' 'unsigned long int' \
+ 'unsigned long long int'; do
+ AC_COMPILE_IFELSE(
+ [AC_LANG_BOOL_COMPILE_TRY(
+ [AC_INCLUDES_DEFAULT],
+ [[sizeof (void *) <= sizeof ($ac_type)]])],
+ [AC_DEFINE_UNQUOTED([uintptr_t], [$ac_type],
+ [Define to the type of an unsigned integer type wide enough to
+ hold a pointer, if such a type exists, and if the system
+ does not define it.])
+ ac_type=])
+ test -z "$ac_type" && break
+ done])
+])
+
+
+# AC_TYPE_LONG_DOUBLE
+# -------------------
+AC_DEFUN([AC_TYPE_LONG_DOUBLE],
+[
+ AC_CACHE_CHECK([for long double], [ac_cv_type_long_double],
+ [if test "$GCC" = yes; then
+ ac_cv_type_long_double=yes
+ else
+ AC_COMPILE_IFELSE(
+ [AC_LANG_BOOL_COMPILE_TRY(
+ [[/* The Stardent Vistra knows sizeof (long double), but does
+ not support it. */
+ long double foo = 0.0L;]],
+ [[/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
+ sizeof (double) <= sizeof (long double)]])],
+ [ac_cv_type_long_double=yes],
+ [ac_cv_type_long_double=no])
+ fi])
+ if test $ac_cv_type_long_double = yes; then
+ AC_DEFINE([HAVE_LONG_DOUBLE], 1,
+ [Define to 1 if the system has the type `long double'.])
+ fi
+])
+
+
+# AC_TYPE_LONG_DOUBLE_WIDER
+# -------------------------
+AC_DEFUN([AC_TYPE_LONG_DOUBLE_WIDER],
+[
+ AC_CACHE_CHECK(
+ [for long double with more range or precision than double],
+ [ac_cv_type_long_double_wider],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_BOOL_COMPILE_TRY(
+ [[#include <float.h>
+ long double const a[] =
+ {
+ 0.0L, DBL_MIN, DBL_MAX, DBL_EPSILON,
+ LDBL_MIN, LDBL_MAX, LDBL_EPSILON
+ };
+ long double
+ f (long double x)
+ {
+ return ((x + (unsigned long int) 10) * (-1 / x) + a[0]
+ + (x ? f (x) : 'c'));
+ }
+ ]],
+ [[(0 < ((DBL_MAX_EXP < LDBL_MAX_EXP)
+ + (DBL_MANT_DIG < LDBL_MANT_DIG)
+ - (LDBL_MAX_EXP < DBL_MAX_EXP)
+ - (LDBL_MANT_DIG < DBL_MANT_DIG)))
+ && (int) LDBL_EPSILON == 0
+ ]])],
+ ac_cv_type_long_double_wider=yes,
+ ac_cv_type_long_double_wider=no)])
+ if test $ac_cv_type_long_double_wider = yes; then
+ AC_DEFINE([HAVE_LONG_DOUBLE_WIDER], 1,
+ [Define to 1 if the type `long double' works and has more range or
+ precision than `double'.])
+ fi
+])# AC_TYPE_LONG_DOUBLE_WIDER
+
+
+# AC_C_LONG_DOUBLE
+# ----------------
+AU_DEFUN([AC_C_LONG_DOUBLE],
+ [
+ AC_TYPE_LONG_DOUBLE_WIDER
+ ac_cv_c_long_double=$ac_cv_type_long_double_wider
+ if test $ac_cv_c_long_double = yes; then
+ AC_DEFINE([HAVE_LONG_DOUBLE], 1,
+ [Define to 1 if the type `long double' works and has more range or
+ precision than `double'.])
+ fi
+ ],
+ [The macro `AC_C_LONG_DOUBLE' is obsolete.
+You should use `AC_TYPE_LONG_DOUBLE' or `AC_TYPE_LONG_DOUBLE_WIDER' instead.]
+)
+
+
+# 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(
+ [long long int ll = 1LL; int i = 63;],
+ [long long int llmax = (long long int) -1;
+ return 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
+])
+
+
+# AC_TYPE_UNSIGNED_LONG_LONG_INT
+# ------------------------------
+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(
+ [unsigned long long int ull = 1ULL; int i = 63;],
+ [unsigned long long int ullmax = (unsigned long long int) -1;
+ return ull << i | ull >> i | ullmax / ull | ullmax % ull;])],
+ [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
+ AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], 1,
+ [Define to 1 if the system has the type `unsigned long long int'.])
+ fi
+])
+
+
# AC_TYPE_MBSTATE_T
# -----------------
AC_DEFUN([AC_TYPE_MBSTATE_T],
@@ -343,6 +543,9 @@ fi
AN_IDENTIFIER([size_t], [AC_TYPE_SIZE_T])
AC_DEFUN([AC_TYPE_SIZE_T], [AC_CHECK_TYPE(size_t, unsigned int)])
+AN_IDENTIFIER([ssize_t], [AC_TYPE_SSIZE_T])
+AC_DEFUN([AC_TYPE_SSIZE_T], [AC_CHECK_TYPE(ssize_t, int)])
+
AN_IDENTIFIER([pid_t], [AC_TYPE_PID_T])
AC_DEFUN([AC_TYPE_PID_T], [AC_CHECK_TYPE(pid_t, int)])
@@ -352,6 +555,82 @@ AC_DEFUN([AC_TYPE_OFF_T], [AC_CHECK_TYP
AN_IDENTIFIER([mode_t], [AC_TYPE_MODE_T])
AC_DEFUN([AC_TYPE_MODE_T], [AC_CHECK_TYPE(mode_t, int)])
+AN_IDENTIFIER([int8_t], [AC_TYPE_INT8_T])
+AN_IDENTIFIER([int16_t], [AC_TYPE_INT16_T])
+AN_IDENTIFIER([int32_t], [AC_TYPE_INT32_T])
+AN_IDENTIFIER([int64_t], [AC_TYPE_INT64_T])
+AN_IDENTIFIER([uint8_t], [AC_TYPE_UINT8_T])
+AN_IDENTIFIER([uint16_t], [AC_TYPE_UINT16_T])
+AN_IDENTIFIER([uint32_t], [AC_TYPE_UINT32_T])
+AN_IDENTIFIER([uint64_t], [AC_TYPE_UINT64_T])
+AC_DEFUN([AC_TYPE_INT8_T], [_AC_TYPE_INT(8)])
+AC_DEFUN([AC_TYPE_INT16_T], [_AC_TYPE_INT(16)])
+AC_DEFUN([AC_TYPE_INT32_T], [_AC_TYPE_INT(32)])
+AC_DEFUN([AC_TYPE_INT64_T], [_AC_TYPE_INT(64)])
+AC_DEFUN([AC_TYPE_UINT8_T], [_AC_TYPE_UNSIGNED_INT(8)])
+AC_DEFUN([AC_TYPE_UINT16_T], [_AC_TYPE_UNSIGNED_INT(16)])
+AC_DEFUN([AC_TYPE_UINT32_T], [_AC_TYPE_UNSIGNED_INT(32)])
+AC_DEFUN([AC_TYPE_UINT64_T], [_AC_TYPE_UNSIGNED_INT(64)])
+
+# _AC_TYPE_INT(NBITS)
+# -------------------
+AC_DEFUN([_AC_TYPE_INT],
+[
+ AC_CACHE_CHECK([for int$1_t], [ac_cv_c_int$1_t],
+ [ac_cv_c_int$1_t=no
+ for ac_type in 'int$1_t' 'int' 'long int' \
+ 'long long int' 'short int' 'signed char'; do
+ AC_COMPILE_IFELSE(
+ [AC_LANG_BOOL_COMPILE_TRY(
+ [AC_INCLUDES_DEFAULT],
+ [[0 < ($ac_type) (((($ac_type) 1 << ($1 - 2)) - 1) * 2 + 1)]])],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_BOOL_COMPILE_TRY(
+ [AC_INCLUDES_DEFAULT],
+ [[($ac_type) (((($ac_type) 1 << ($1 - 2)) - 1) * 2 + 1)
+ < ($ac_type) (((($ac_type) 1 << ($1 - 2)) - 1) * 2 + 2)]])],
+ [],
+ [ac_cv_c_int$1_t=$ac_type])])
+ test "$ac_cv_c_int$1_t" != no && break
+ done])
+ case $ac_cv_c_int$1_t in #(
+ no|int$1_t) ;; #(
+ *)
+ AC_DEFINE_UNQUOTED([int$1_t], [$ac_cv_c_int$1_t],
+ [Define to the type of a signed integer type of width exactly $1 bits
+ if such a type exists and the standard includes do not define it.]);;
+ esac
+])# _AC_TYPE_INT
+
+# _AC_TYPE_UNSIGNED_INT(NBITS)
+# ----------------------------
+AC_DEFUN([_AC_TYPE_UNSIGNED_INT],
+[
+ AC_CACHE_CHECK([for uint$1_t], [ac_cv_c_uint$1_t],
+ [ac_cv_c_uint$1_t=no
+ for ac_type in 'uint$1_t' 'unsigned int' 'unsigned long int' \
+ 'unsigned long long int' 'unsigned short int' 'unsigned char'; do
+ AC_COMPILE_IFELSE(
+ [AC_LANG_BOOL_COMPILE_TRY(
+ [AC_INCLUDES_DEFAULT],
+ [[($ac_type) -1 >> ($1 - 1) == 1]])],
+ [ac_cv_c_uint$1_t=$ac_type])
+ test "$ac_cv_c_uint$1_t" != no && break
+ done])
+ case $ac_cv_c_uint$1_t in #(
+ no|uint$1_t) ;; #(
+ *)
+ m4_if([$1], 32,
+ [AC_DEFINE([_UINT$1_T], 1,
+ [Define for Solaris 2.5.1 so the uint$1_t typedef from
+ <sys/synch.h>, <pthread.h>, or <semaphore.h> is not used.
+ If the typedef was allowed, the #define below would cause a
+ syntax error.])])
+ AC_DEFINE_UNQUOTED([uint$1_t], [$ac_cv_c_uint$1_t],
+ [Define to the type of an unsigned integer type of width exactly $1 bits
+ if such a type exists and the standard includes do not define it.]);;
+ esac
+])# _AC_TYPE_UNSIGNED_INT
# AC_TYPE_SIGNAL
# --------------
@@ -470,7 +749,7 @@ you adjust the code.])
# AC_CHECK_MEMBER(AGGREGATE.MEMBER,
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
-# [INCLUDES])
+# [INCLUDES = DEFAULT-INCLUDES])
# ---------------------------------------------------------
# AGGREGATE.MEMBER is for instance `struct passwd.pw_gecos', shell
# variables are not a valid argument.
@@ -504,7 +783,7 @@ AS_VAR_POPDEF([ac_Member])dnl
# AC_CHECK_MEMBERS([AGGREGATE.MEMBER, ...],
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]
-# [INCLUDES])
+# [INCLUDES = DEFAULT-INCLUDES])
# ---------------------------------------------------------
# The first argument is an m4 list.
AC_DEFUN([AC_CHECK_MEMBERS],
@@ -530,6 +809,40 @@ AN_IDENTIFIER([st_rdev], [AC_CHECK_ME
# Alphabetic order, please.
+# _AC_STRUCT_DIRENT(MEMBER)
+# -------------------------
+AC_DEFUN([_AC_STRUCT_DIRENT],
+[
+ AC_REQUIRE([AC_HEADER_DIRENT])
+ AC_CHECK_MEMBERS([struct dirent.$1], [], [],
+ [[
+#include <sys/types.h>
+#ifdef HAVE_DIRENT_H
+# include <dirent.h>
+#else
+# define dirent direct
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif
+ ]])
+])
+
+# AC_STRUCT_DIRENT_D_INO
+# -----------------------------------
+AC_DEFUN([AC_STRUCT_DIRENT_D_INO], [_AC_STRUCT_DIRENT([d_ino])])
+
+# AC_STRUCT_DIRENT_D_TYPE
+# ------------------------------------
+AC_DEFUN([AC_STRUCT_DIRENT_D_TYPE], [_AC_STRUCT_DIRENT([d_type])])
+
+
# AC_STRUCT_ST_BLKSIZE
# --------------------
AU_DEFUN([AC_STRUCT_ST_BLKSIZE],
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- installed non-width patches imported from gnulib,
Paul Eggert <=