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configure.in (LIMITS_INC_SRCDIR): New variable.

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* configure.in (LIMITS_INC_SRCDIR): New variable.
	* configure.target (LIMITSH): New variable.
	* porting.texi: Discuss numeric limits.
	* config/cpu/generic/bits/limits.h: New file.
	* config/cpu/i386/bits/limits.h: New file.
	* include/Makefile.am: Install bits/limits.h.
	* include/bits/c++config: Include bits/limits.h.

From-SVN: r44877
This commit is contained in:
Mark Mitchell 2001-08-13 22:26:11 +00:00 committed by Mark Mitchell
parent f22db2ef6d
commit 9f3c078ea9
18 changed files with 146 additions and 7 deletions
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10
libstdc++-v3/ChangeLog
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@ -1,3 +1,13 @@
2001-08-13 Mark Mitchell <mark@codesourcery.com>
* configure.in (LIMITS_INC_SRCDIR): New variable.
* configure.target (LIMITSH): New variable.
* porting.texi: Discuss numeric limits.
* config/cpu/generic/bits/limits.h: New file.
* config/cpu/i386/bits/limits.h: New file.
* include/Makefile.am: Install bits/limits.h.
* include/bits/c++config: Include bits/limits.h.
2001-08-13 H.J. Lu (hjl@gnu.org)
* testsuite/lib/libstdc++-v3-dg.exp (libstdc++-v3-copy-files):

1
libstdc++-v3/Makefile.in
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@ -105,6 +105,7 @@ LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_INCLUDES = @LIBSUPCXX_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@

40
libstdc++-v3/config/cpu/generic/bits/limits.h Normal file
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@ -0,0 +1,40 @@
// Copyright (C) 2001 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#ifndef _GLIBCPP_CPU_LIMITS
#define _GLIBCPP_CPU_LIMITS 1
// Nothing is defined in the generic file. In that way, we fall back
// on the defaults in std_limits.h.
// If you need to override these defaults, you can either use a
// CPU-specific version (in which case you must modify
// configure.target) or you must add the overrides to your
// os_defines.h. In general, if all systems for your CPU use the
// same values, it is best to use a cpu-specific configuration file.
#endif

33
libstdc++-v3/config/cpu/i386/bits/limits.h Normal file
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@ -0,0 +1,33 @@
// Copyright (C) 2001 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#ifndef _GLIBCPP_CPU_LIMITS
#define _GLIBCPP_CPU_LIMITS 1
#define __glibcpp_long_double_bits 80
#endif

11
libstdc++-v3/configure vendored
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@ -19156,6 +19156,8 @@ fi
# Propagate the target-specific source directories through the build chain.
OS_INC_SRCDIR=$os_include_dir/bits
ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
LIMITS_INC_SRCDIR=$LIMITSH/bits
@ -19237,13 +19239,13 @@ glibcpp_toolexeclibdir=no
glibcpp_prefixdir=${prefix}
echo $ac_n "checking for interface version number""... $ac_c" 1>&6
echo "configure:19241: checking for interface version number" >&5
echo "configure:19243: checking for interface version number" >&5
libstdcxx_interface=$INTERFACE
echo "$ac_t""$libstdcxx_interface" 1>&6
# Process the option --with-gxx-include-dir=<path to include-files directory>
echo $ac_n "checking for --with-gxx-include-dir""... $ac_c" 1>&6
echo "configure:19247: checking for --with-gxx-include-dir" >&5
echo "configure:19249: checking for --with-gxx-include-dir" >&5
# Check whether --with-gxx-include-dir or --without-gxx-include-dir was given.
if test "${with_gxx_include_dir+set}" = set; then
withval="$with_gxx_include_dir"
@ -19267,7 +19269,7 @@ echo "$ac_t""$gxx_include_dir" 1>&6
# Process the option "--enable-version-specific-runtime-libs"
echo $ac_n "checking for --enable-version-specific-runtime-libs""... $ac_c" 1>&6
echo "configure:19271: checking for --enable-version-specific-runtime-libs" >&5
echo "configure:19273: checking for --enable-version-specific-runtime-libs" >&5
# Check whether --enable-version-specific-runtime-libs or --disable-version-specific-runtime-libs was given.
if test "${enable_version_specific_runtime_libs+set}" = set; then
enableval="$enable_version_specific_runtime_libs"
@ -19308,7 +19310,7 @@ if test x"$glibcpp_toolexecdir" = x"no"; then
fi
echo $ac_n "checking for install location""... $ac_c" 1>&6
echo "configure:19312: checking for install location" >&5
echo "configure:19314: checking for install location" >&5
echo "$ac_t""$gxx_include_dir" 1>&6
@ -19603,6 +19605,7 @@ s%@USE_COMPLEX_LONG_DOUBLE@%$USE_COMPLEX_LONG_DOUBLE%g
s%@WERROR@%$WERROR%g
s%@OS_INC_SRCDIR@%$OS_INC_SRCDIR%g
s%@ATOMICITY_INC_SRCDIR@%$ATOMICITY_INC_SRCDIR%g
s%@LIMITS_INC_SRCDIR@%$LIMITS_INC_SRCDIR%g
s%@GLIBCPP_IS_CROSS_COMPILING@%$GLIBCPP_IS_CROSS_COMPILING%g
s%@CANADIAN_TRUE@%$CANADIAN_TRUE%g
s%@CANADIAN_FALSE@%$CANADIAN_FALSE%g

2
libstdc++-v3/configure.in
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@ -204,8 +204,10 @@ fi
# Propagate the target-specific source directories through the build chain.
OS_INC_SRCDIR=$os_include_dir/bits
ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
LIMITS_INC_SRCDIR=$LIMITSH/bits
AC_SUBST(OS_INC_SRCDIR)
AC_SUBST(ATOMICITY_INC_SRCDIR)
AC_SUBST(LIMITS_INC_SRCDIR)
# Set up cross-compile flags
AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)

13
libstdc++-v3/configure.target
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@ -122,3 +122,16 @@ case "${target}" in
ATOMICITYH=$cpu_include_dir
;;
esac
# Set LIMITSH to the directory where the configuration-dependent
# limits.h can be found.
# THIS TABLE IS SORTED. KEEP IT THAT WAY.
case "${target}" in
i?86-*-*)
LIMITSH=config/cpu/i386
;;
*)
LIMITSH=config/cpu/generic
;;
esac

5
libstdc++-v3/include/Makefile.am
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@ -21,7 +21,7 @@
## Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
## USA.
## $Id: Makefile.am,v 1.3 2001/08/10 15:47:21 gdr Exp $
## $Id: Makefile.am,v 1.4 2001/08/10 20:44:53 ljrittle Exp $
AUTOMAKE_OPTIONS = 1.3 gnits
MAINT_CHARSET = latin1
@ -285,7 +285,8 @@ target_headers = \
${target_srcdir}/ctype_inline.h \
${target_srcdir}/ctype_noninline.h \
${target_srcdir}/os_defines.h \
${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h
${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h \
${glibcpp_srcdir}/@LIMITS_INC_SRCDIR@/limits.h
thread_builddir = ./${target_alias}/bits
thread_headers = \

3
libstdc++-v3/include/Makefile.in
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@ -104,6 +104,7 @@ LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_INCLUDES = @LIBSUPCXX_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@
@ -180,7 +181,7 @@ std_headers = ${std_srcdir}/algorithm ${std_srcdir}/bitset ${std_srcdir}/com
target_srcdir = ${glibcpp_srcdir}/@OS_INC_SRCDIR@
target_builddir = ./${target_alias}/bits
target_headers = ${target_srcdir}/ctype_base.h ${target_srcdir}/ctype_inline.h ${target_srcdir}/ctype_noninline.h ${target_srcdir}/os_defines.h ${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h
target_headers = ${target_srcdir}/ctype_base.h ${target_srcdir}/ctype_inline.h ${target_srcdir}/ctype_noninline.h ${target_srcdir}/os_defines.h ${glibcpp_srcdir}/@ATOMICITY_INC_SRCDIR@/atomicity.h ${glibcpp_srcdir}/@LIMITS_INC_SRCDIR@/limits.h
thread_builddir = ./${target_alias}/bits

2
libstdc++-v3/include/bits/c++config
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@ -32,6 +32,8 @@
// Pick up any OS-specific definitions.
#include <bits/os_defines.h>
// And any CPU-specific definitions.
#include <bits/limits.h>
// The current version of the C++ library in compressed ISO date format.
#define __GLIBCPP__ 20010813

1
libstdc++-v3/intl/Makefile.in
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@ -105,6 +105,7 @@ LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_INCLUDES = @LIBSUPCXX_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@

1
libstdc++-v3/libio/Makefile.in
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@ -103,6 +103,7 @@ LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_INCLUDES = @LIBSUPCXX_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@

1
libstdc++-v3/libmath/Makefile.in
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@ -105,6 +105,7 @@ LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_INCLUDES = @LIBSUPCXX_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@

1
libstdc++-v3/libsupc++/Makefile.in
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@ -102,6 +102,7 @@ LIBMATHOBJS = @LIBMATHOBJS@
LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@

1
libstdc++-v3/po/Makefile.in
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@ -105,6 +105,7 @@ LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_INCLUDES = @LIBSUPCXX_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@

26
libstdc++-v3/porting.texi
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@ -74,6 +74,7 @@ Here are the primary steps required to port the library:
* Operating system:: Configuring for your operating system.
* Character types:: Implementing character classification.
* Thread safety:: Implementing atomic operations.
* Numeric limits:: Implementing numeric limits.
* Libtool:: Using libtool.
* GNU Free Documentation License:: How you can copy and share this manual.
@end menu
@ -436,6 +437,31 @@ __atomic_add (_Atomic_word* __mem, int __val)
@}
@end example
@c ---------------------------------------------------------------------
@c Numeric limits
@c ---------------------------------------------------------------------
@node Numeric limits
@chapter Numeric limits
The C++ library requires information about the fundamental data types,
such as the minimum and maximum representable values of each type.
You can define each of these values individually, but it is usually
easiest just to indicate how many bits are used in each of the data
types and let the library do the rest. For information about the
macros to define, see the top of @file{include/bits/std_limits.h}.
If you need to define any macros, you can do so in
@file{os_defines.h}. However, if all operating systems for your CPU
are likely to use the same values, you can provide a CPU-specific file
instead so that you do not have to provide the same definitions for
each operating system. To take that approach, create a new file
called @file{limits.h} in your CPU configuration directory (e.g.,
@file{config/cpu/i386/bits}) and then modify @file{configure.target}
so that @code{LIMITSH} is set to the CPU directory (e.g.,
@file{config/cpu/i386}). Note that @code{LIMITSH} should not include
the @samp{bits} part of the directory name.
@c ---------------------------------------------------------------------
@c Libtool
@c ---------------------------------------------------------------------

1
libstdc++-v3/src/Makefile.in
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@ -99,6 +99,7 @@ INTLOBJS = @INTLOBJS@
LIBMATHOBJS = @LIBMATHOBJS@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@

1
libstdc++-v3/testsuite/Makefile.in
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@ -105,6 +105,7 @@ LIBMATH_INCLUDES = @LIBMATH_INCLUDES@
LIBSUPCXX_INCLUDES = @LIBSUPCXX_INCLUDES@
LIBSUPCXX_PICFLAGS = @LIBSUPCXX_PICFLAGS@
LIBTOOL = @LIBTOOL@
LIMITS_INC_SRCDIR = @LIMITS_INC_SRCDIR@
LN_S = @LN_S@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@