Import readline 7.0 (patch 5)

This imports readline 7.0 (up to patch 5) while preserving all
gdb-local changes.

This was done by checking out the readline git repository, making a
branch based on the gdb baseline revision, applying the gdb changes to
that branch, and then merging from readline 7.

readline/ChangeLog.gdb
2019-08-12  Tom Tromey  <tom@tromey.com>

	* Imported readline 7.0 patch 5.

1 files changed, 304 insertions, 0 deletions

diff --git a/readline/configure.ac b/readline/configure.ac
new file mode 100644
index 0000000..f482579
--- /dev/null
+++ b/readline/configure.ac
@@ -0,0 +1,304 @@
+dnl
+dnl Configure script for readline library
+dnl
+dnl report bugs to chet@po.cwru.edu
+dnl
+dnl Process this file with autoconf to produce a configure script.
+
+# Copyright (C) 1987-2016 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
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+
+#   This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+
+AC_REVISION([for Readline 7.0, version 2.81])
+
+m4_include([../config/override.m4])
+
+AC_INIT(readline, 7.0, bug-readline@gnu.org)
+
+dnl make sure we are using a recent autoconf version
+AC_PREREQ(2.50)
+
+AC_CONFIG_SRCDIR(readline.h)
+dnl GDB LOCAL
+dnl AC_CONFIG_AUX_DIR(./support)
+AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/..)
+AC_CONFIG_HEADERS(config.h)
+
+dnl update the value of RL_READLINE_VERSION in readline.h when this changes
+LIBVERSION=7.0
+
+AC_CANONICAL_HOST
+AC_CANONICAL_BUILD
+
+dnl configure defaults
+opt_curses=no
+
+dnl arguments to configure
+AC_ARG_WITH(curses, AC_HELP_STRING([--with-curses], [use the curses library instead of the termcap library]), opt_curses=$withval)
+
+if test "$opt_curses" = "yes"; then
+	prefer_curses=yes
+fi
+
+dnl option parsing for optional features
+opt_multibyte=yes
+opt_static_libs=yes
+opt_shared_libs=no
+
+AC_ARG_ENABLE(multibyte, AC_HELP_STRING([--enable-multibyte], [enable multibyte characters if OS supports them]), opt_multibyte=$enableval)
+dnl AC_ARG_ENABLE(shared, AC_HELP_STRING([--enable-shared], [build shared libraries [[default=YES]]]), opt_shared_libs=$enableval)
+AC_ARG_ENABLE(static, AC_HELP_STRING([--enable-static], [build static libraries [[default=YES]]]), opt_static_libs=$enableval)
+
+if test $opt_multibyte = no; then
+AC_DEFINE(NO_MULTIBYTE_SUPPORT)
+fi
+
+dnl load up the cross-building cache file -- add more cases and cache
+dnl files as necessary
+
+dnl Note that host and target machine are the same, and different than the
+dnl build machine.
+
+CROSS_COMPILE=
+if test "x$cross_compiling" = "xyes"; then
+    case "${host}" in
+    *-cygwin*)
+        cross_cache=${srcdir}/cross-build/cygwin.cache
+        ;;
+    *-mingw*)
+        cross_cache=${srcdir}/cross-build/mingw.cache
+        ;;
+    i[[3456]]86-*-beos*)
+        cross_cache=${srcdir}/cross-build/x86-beos.cache
+        ;;
+    *)  echo "configure: cross-compiling for $host is not supported" >&2
+        ;;
+    esac
+    if test -n "${cross_cache}" && test -r "${cross_cache}"; then
+        echo "loading cross-build cache file ${cross_cache}"
+        . ${cross_cache}
+    fi
+    unset cross_cache
+    CROSS_COMPILE='-DCROSS_COMPILING'
+    AC_SUBST(CROSS_COMPILE)
+fi
+
+echo ""
+echo "Beginning configuration for readline-$LIBVERSION for ${host_cpu}-${host_vendor}-${host_os}"
+echo ""
+
+# We want these before the checks, so the checks can modify their values.
+test -z "$CFLAGS" && CFLAGS=-g auto_cflags=1
+
+AC_PROG_MAKE_SET
+AC_PROG_CC
+dnl AC_AIX
+AC_MINIX
+
+# If we're using gcc and the user hasn't specified CFLAGS, add -O to CFLAGS.
+test -n "$GCC" && test -n "$auto_cflags" && CFLAGS="$CFLAGS -O"
+
+AC_PROG_GCC_TRADITIONAL
+AC_PROG_INSTALL
+AC_CHECK_TOOL(AR, ar)
+dnl Set default for ARFLAGS, since autoconf does not have a macro for it.
+dnl This allows people to set it when running configure or make
+test -n "$ARFLAGS" || ARFLAGS="cr"
+AC_PROG_RANLIB
+
+MAKE_SHELL=/bin/sh
+AC_SUBST(MAKE_SHELL)
+
+AC_C_CONST
+AC_C_PROTOTYPES
+AC_C_CHAR_UNSIGNED
+AC_C_VOLATILE
+
+AC_TYPE_SIGNAL
+
+AC_TYPE_SIZE_T
+AC_CHECK_TYPE(ssize_t, int)
+
+AC_HEADER_STDC
+
+AC_HEADER_STAT
+AC_HEADER_DIRENT
+
+AC_CHECK_FUNCS(fcntl kill lstat readlink)
+AC_CHECK_FUNCS(memmove pselect putenv select setenv setlocale \
+		strcasecmp strpbrk tcgetattr vsnprintf)
+AC_CHECK_FUNCS(isascii isxdigit)
+AC_CHECK_FUNCS(getpwent getpwnam getpwuid)
+
+AC_FUNC_CHOWN
+AC_FUNC_STRCOLL
+
+AC_CHECK_HEADERS(fcntl.h unistd.h stdlib.h varargs.h stdarg.h stdbool.h \
+		string.h strings.h \
+		limits.h locale.h pwd.h memory.h termcap.h termios.h termio.h)
+AC_CHECK_HEADERS(sys/ioctl.h sys/pte.h sys/stream.h sys/select.h sys/file.h)
+
+AC_CHECK_HEADERS(sys/ptem.h,,,
+[[
+#if HAVE_SYS_STREAM_H
+#  include <sys/stream.h>
+#endif
+]])
+
+AC_SYS_LARGEFILE
+
+BASH_SYS_SIGNAL_VINTAGE
+BASH_SYS_REINSTALL_SIGHANDLERS
+
+BASH_FUNC_POSIX_SETJMP
+BASH_FUNC_LSTAT
+BASH_FUNC_STRCOLL
+BASH_FUNC_CTYPE_NONASCII
+
+BASH_CHECK_GETPW_FUNCS
+
+AC_HEADER_TIOCGWINSZ
+
+BASH_TYPE_SIG_ATOMIC_T
+BASH_TYPE_SIGHANDLER
+
+BASH_HAVE_TIOCSTAT
+BASH_HAVE_FIONREAD
+BASH_CHECK_SPEED_T
+BASH_STRUCT_WINSIZE
+BASH_STRUCT_DIRENT_D_INO
+BASH_STRUCT_DIRENT_D_FILENO
+
+AC_CHECK_HEADERS(libaudit.h)
+AC_CHECK_DECLS([AUDIT_USER_TTY],,, [[#include <linux/audit.h>]])
+
+dnl yuck
+case "$host_os" in
+aix*)   prefer_curses=yes ;;
+esac
+BASH_CHECK_LIB_TERMCAP
+if test "$TERMCAP_LIB" = "./lib/termcap/libtermcap.a"; then
+	if test "$prefer_curses" = yes; then
+		TERMCAP_LIB=-lcurses
+	else
+		TERMCAP_LIB=-ltermcap	#default
+	fi
+fi
+# Windows ncurses installation
+if test "$TERMCAP_LIB" = "-lncurses"; then
+	AC_CHECK_HEADERS(ncurses/termcap.h)
+fi
+
+BASH_CHECK_MULTIBYTE
+
+case "$host_cpu" in
+*cray*)	LOCAL_CFLAGS=-DCRAY ;;
+*s390*) LOCAL_CFLAGS=-fsigned-char ;;
+esac
+
+case "$host_os" in
+isc*)	LOCAL_CFLAGS=-Disc386 ;;
+esac
+
+# shared library configuration section
+#
+# Shared object configuration section.  These values are generated by
+# ${srcdir}/support/shobj-conf
+#
+if test -f ${srcdir}/support/shobj-conf; then
+        AC_MSG_CHECKING(configuration for building shared libraries)
+        eval `TERMCAP_LIB=$TERMCAP_LIB ${CONFIG_SHELL-/bin/sh} ${srcdir}/support/shobj-conf -C "${CC}" -c ${host_cpu} -o ${host_os} -v ${host_vendor}`
+
+#	case "$SHLIB_LIBS" in
+#	*curses*|*termcap*|*termlib*)	;;
+#	*)			SHLIB_LIBS="$SHLIB_LIBS $TERMCAP_LIB" ;;
+#	esac
+	
+        AC_SUBST(SHOBJ_CC)
+        AC_SUBST(SHOBJ_CFLAGS)
+        AC_SUBST(SHOBJ_LD)
+        AC_SUBST(SHOBJ_LDFLAGS)
+	AC_SUBST(SHOBJ_XLDFLAGS)
+        AC_SUBST(SHOBJ_LIBS)
+        AC_SUBST(SHOBJ_STATUS)
+	AC_SUBST(SHLIB_STATUS)
+	AC_SUBST(SHLIB_XLDFLAGS)
+	AC_SUBST(SHLIB_DOT)
+	AC_SUBST(SHLIB_LIBPREF)
+	AC_SUBST(SHLIB_LIBSUFF)
+	AC_SUBST(SHLIB_LIBVERSION)
+	AC_SUBST(SHLIB_DLLVERSION)
+	AC_SUBST(SHLIB_LIBS)
+        AC_MSG_RESULT($SHLIB_STATUS)
+
+	# SHLIB_STATUS is either `supported' or `unsupported'.  If it's
+	# `unsupported', turn off any default shared library building
+	if test "$SHLIB_STATUS" = 'unsupported'; then
+		opt_shared_libs=no
+	fi
+
+	# shared library versioning
+	# quoted for m4 so I can use character classes
+	SHLIB_MAJOR=[`expr "$LIBVERSION" : '\([0-9]\)\..*'`]
+	SHLIB_MINOR=[`expr "$LIBVERSION" : '[0-9]\.\([0-9]\).*'`]
+	AC_SUBST(SHLIB_MAJOR)
+	AC_SUBST(SHLIB_MINOR)
+fi
+
+if test "$opt_static_libs" = "yes"; then
+	STATIC_TARGET=static
+	STATIC_INSTALL_TARGET=install-static
+fi
+if test "$opt_shared_libs" = "yes"; then
+	SHARED_TARGET=shared
+	SHARED_INSTALL_TARGET=install-shared
+fi
+
+AC_SUBST(STATIC_TARGET)
+AC_SUBST(SHARED_TARGET)
+AC_SUBST(STATIC_INSTALL_TARGET)
+AC_SUBST(SHARED_INSTALL_TARGET)
+
+case "$build_os" in
+msdosdjgpp*)	BUILD_DIR=`pwd.exe` ;;	# to prevent //d/path/file
+*)		BUILD_DIR=`pwd` ;;
+esac
+
+case "$BUILD_DIR" in
+*\ *)	BUILD_DIR=`echo "$BUILD_DIR" | sed 's: :\\\\ :g'` ;;
+*)	;;
+esac
+
+AC_SUBST(BUILD_DIR)
+
+AC_SUBST(CFLAGS)
+AC_SUBST(LOCAL_CFLAGS)
+AC_SUBST(LOCAL_LDFLAGS)
+AC_SUBST(LOCAL_DEFS)
+
+AC_SUBST(AR)
+AC_SUBST(ARFLAGS)
+
+AC_SUBST(host_cpu)
+AC_SUBST(host_os)
+
+AC_SUBST(LIBVERSION)
+
+AC_SUBST(TERMCAP_LIB)
+
+AC_OUTPUT([Makefile doc/Makefile examples/Makefile shlib/Makefile readline.pc],
+[
+# Makefile uses this timestamp file to record whether config.h is up to date.
+echo > stamp-h
+])