Improve GDB support for FreeBSD host/target.

To configure.in: make PRINTF_HAS_LONG_LONG check more pedantic; check
that SCANF_HAS_LONG_DOUBLE instead of assuming PRINTF_HAS_LONG_DOUBLE
implies it; document.

7 files changed, 260 insertions, 137 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 98786ee..de43a91 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,21 @@
+Mon Nov 24 08:59:28 1997  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* config/i386/tm-fbsd.h: New file.
+	* config/i386/fbsd.mt (TM_FILE): Change to tm-fbsd.h.
+
+	* config/i386/nm-fbsd.h (FLOAT_INFO): Move definition from here.
+ 	* config/i386/tm-fbsd.h (FLOAT_INFO): To here.
+
+	* configure.in (PRINTF_HAS_LONG_LONG): Check full functionality of
+ 	%ll format specifier.
+	(SCANF_HAS_LONG_DOUBLE): Check the scanf family for support of
+ 	long double using %Lg.
+	* acconfig.h: Provide default undef for SCANF_HAS_LONG_DOUBLE.
+	* configure: Re-generate.
+	
+	* c-exp.y (parse_number): Use sscanf %Lg when host has
+ 	SCANF_HAS_LONG_DOUBLE not PRINTF_HAS_LONG_DOUBLE
+
 Sun Nov 23 17:12:58 1997  Andrew Cagney  <cagney@b1.cygnus.com>
 
 	* printcmd.c (print_insn): Set the machine type if known.
diff --git a/gdb/acconfig.h b/gdb/acconfig.h
index ec4ad2b..bd53ec3 100644
--- a/gdb/acconfig.h
+++ b/gdb/acconfig.h
@@ -24,6 +24,9 @@
 /* Define if the "%Lg" format works to print long doubles. */
 #undef PRINTF_HAS_LONG_DOUBLE
 
+/* Define if the "%Lg" format works to scan long doubles. */
+#undef SCANF_HAS_LONG_DOUBLE
+
 /* Define if using Solaris thread debugging.  */
 #undef HAVE_THREAD_DB_LIB
 
diff --git a/gdb/c-exp.y b/gdb/c-exp.y
index 7ea6c1f..7316ae8 100644
--- a/gdb/c-exp.y
+++ b/gdb/c-exp.y
@@ -936,7 +936,7 @@ parse_number (p, len, parsed_float, putithere)
 	num = sscanf (p, "%lg%c", (double *) &putithere->typed_val_float.dval,&c);
       else
 	{
-#ifdef PRINTF_HAS_LONG_DOUBLE
+#ifdef SCANF_HAS_LONG_DOUBLE
 	  num = sscanf (p, "%Lg%c", &putithere->typed_val_float.dval,&c);
 #else
 	  /* Scan it into a double, then assign it to the long double.
diff --git a/gdb/config/i386/tm-fbsd.h b/gdb/config/i386/tm-fbsd.h
new file mode 100644
index 0000000..9933e10
--- /dev/null
+++ b/gdb/config/i386/tm-fbsd.h
@@ -0,0 +1,32 @@
+/* Target macro definitions for i386 running FreeBSD
+   Copyright (C) 1997 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+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 2 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, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "i386/tm-i386bsd.h"
+
+
+#undef NUM_REGS
+#define NUM_REGS 14
+
+
+#undef IN_SOLIB_CALL_TRAMPOLINE
+#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) STREQ (name, "_DYNAMIC")
+
+
+extern i386_float_info ();
+#define FLOAT_INFO  i386_float_info ()
diff --git a/gdb/configure b/gdb/configure
index 51d3254..9ca121c 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -1,7 +1,7 @@
 #! /bin/sh
 
 # Guess values for system-dependent variables and create Makefiles.
-# Generated automatically using autoconf version 2.12.1 
+# Generated automatically using autoconf version 2.12 
 # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
 #
 # This configure script is free software; the Free Software Foundation
@@ -65,7 +65,6 @@ mandir='${prefix}/man'
 # Initialize some other variables.
 subdirs=
 MFLAGS= MAKEFLAGS=
-SHELL=${CONFIG_SHELL-/bin/sh}
 # Maximum number of lines to put in a shell here document.
 ac_max_here_lines=12
 
@@ -349,7 +348,7 @@ EOF
     verbose=yes ;;
 
   -version | --version | --versio | --versi | --vers)
-    echo "configure generated by autoconf version 2.12.1"
+    echo "configure generated by autoconf version 2.12"
     exit 0 ;;
 
   -with-* | --with-*)
@@ -540,7 +539,7 @@ fi
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:544: checking for $ac_word" >&5
+echo "configure:543: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -569,7 +568,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:573: checking for $ac_word" >&5
+echo "configure:572: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -617,7 +616,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:621: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:620: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -627,11 +626,11 @@ ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS
 cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 631 "configure"
+#line 630 "configure"
 #include "confdefs.h"
 main(){return(0);}
 EOF
-if { (eval echo configure:635: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:634: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -651,12 +650,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:655: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:654: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:660: checking whether we are using GNU C" >&5
+echo "configure:659: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -665,7 +664,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:669: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:668: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -680,7 +679,7 @@ if test $ac_cv_prog_gcc = yes; then
   ac_save_CFLAGS="$CFLAGS"
   CFLAGS=
   echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:684: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:683: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -708,7 +707,7 @@ else
 fi
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:712: checking how to run the C preprocessor" >&5
+echo "configure:711: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -723,13 +722,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 727 "configure"
+#line 726 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:733: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:732: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -740,13 +739,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 744 "configure"
+#line 743 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:750: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:749: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -769,9 +768,9 @@ fi
 echo "$ac_t""$CPP" 1>&6
 
 echo $ac_n "checking for AIX""... $ac_c" 1>&6
-echo "configure:773: checking for AIX" >&5
+echo "configure:772: checking for AIX" >&5
 cat > conftest.$ac_ext <<EOF
-#line 775 "configure"
+#line 774 "configure"
 #include "confdefs.h"
 #ifdef _AIX
   yes
@@ -794,17 +793,17 @@ rm -f conftest*
 
 ac_safe=`echo "minix/config.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for minix/config.h""... $ac_c" 1>&6
-echo "configure:798: checking for minix/config.h" >&5
+echo "configure:797: checking for minix/config.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 803 "configure"
+#line 802 "configure"
 #include "confdefs.h"
 #include <minix/config.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:808: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:807: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -842,7 +841,7 @@ EOF
 fi
 
 echo $ac_n "checking for POSIXized ISC""... $ac_c" 1>&6
-echo "configure:846: checking for POSIXized ISC" >&5
+echo "configure:845: checking for POSIXized ISC" >&5
 if test -d /etc/conf/kconfig.d &&
   grep _POSIX_VERSION /usr/include/sys/unistd.h >/dev/null 2>&1
 then
@@ -908,33 +907,33 @@ esac
 
 
 # Make sure we can run config.sub.
-if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
+if $ac_config_sub sun4 >/dev/null 2>&1; then :
 else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:917: checking host system type" >&5
+echo "configure:916: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
 NONE)
   case $nonopt in
   NONE)
-    if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
+    if host_alias=`$ac_config_guess`; then :
     else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
     fi ;;
   *) host_alias=$nonopt ;;
   esac ;;
 esac
 
-host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
+host=`$ac_config_sub $host_alias`
 host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
 host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$host" 1>&6
 
 echo $ac_n "checking target system type""... $ac_c" 1>&6
-echo "configure:938: checking target system type" >&5
+echo "configure:937: checking target system type" >&5
 
 target_alias=$target
 case "$target_alias" in
@@ -945,14 +944,14 @@ NONE)
   esac ;;
 esac
 
-target=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $target_alias`
+target=`$ac_config_sub $target_alias`
 target_cpu=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 target_vendor=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
 target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$target" 1>&6
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:956: checking build system type" >&5
+echo "configure:955: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -963,7 +962,7 @@ NONE)
   esac ;;
 esac
 
-build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
+build=`$ac_config_sub $build_alias`
 build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
 build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
@@ -993,12 +992,11 @@ configdirs="doc testsuite"
 # SunOS /usr/etc/install
 # IRIX /sbin/install
 # AIX /bin/install
-# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
 # AFS /usr/afsws/bin/install, which mishandles nonexistent args
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1002: checking for a BSD compatible install" >&5
+echo "configure:1000: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1010,13 +1008,12 @@ else
     /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
     *)
       # OSF1 and SCO ODT 3.0 have their own names for install.
-      # Don't use installbsd from OSF since it installs stuff as root
-      # by default.
-      for ac_prog in ginstall scoinst install; do
+      for ac_prog in ginstall installbsd scoinst install; do
         if test -f $ac_dir/$ac_prog; then
 	  if test $ac_prog = install &&
             grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
 	    # AIX install.  It has an incompatible calling convention.
+	    # OSF/1 installbsd also uses dspmsg, but is usable.
 	    :
 	  else
 	    ac_cv_path_install="$ac_dir/$ac_prog -c"
@@ -1057,7 +1054,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ar; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1061: checking for $ac_word" >&5
+echo "configure:1058: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1088,7 +1085,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1092: checking for $ac_word" >&5
+echo "configure:1089: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1119,7 +1116,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1123: checking for $ac_word" >&5
+echo "configure:1120: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1155,7 +1152,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1159: checking for $ac_word" >&5
+echo "configure:1156: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_YACC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1189,7 +1186,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1193: checking for $ac_word" >&5
+echo "configure:1190: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1239,12 +1236,12 @@ test "$program_transform_name" = "" && program_transform_name="s,x,x,"
 
 
 echo $ac_n "checking return type of signal handlers""... $ac_c" 1>&6
-echo "configure:1243: checking return type of signal handlers" >&5
+echo "configure:1240: checking return type of signal handlers" >&5
 if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1248 "configure"
+#line 1245 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -1261,7 +1258,7 @@ int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:1265: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1262: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_type_signal=void
 else
@@ -1281,12 +1278,12 @@ EOF
 
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:1285: checking for ANSI C header files" >&5
+echo "configure:1282: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1290 "configure"
+#line 1287 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -1294,7 +1291,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1298: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1295: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1311,7 +1308,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1315 "configure"
+#line 1312 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -1329,7 +1326,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1333 "configure"
+#line 1330 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -1350,7 +1347,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 1354 "configure"
+#line 1351 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -1361,7 +1358,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:1365: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1362: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -1388,17 +1385,17 @@ for ac_hdr in limits.h memory.h string.h strings.h unistd.h termios.h termio.h s
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1392: checking for $ac_hdr" >&5
+echo "configure:1389: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1397 "configure"
+#line 1394 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1402: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1399: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1425,12 +1422,12 @@ fi
 done
 
 echo $ac_n "checking whether stat file-mode macros are broken""... $ac_c" 1>&6
-echo "configure:1429: checking whether stat file-mode macros are broken" >&5
+echo "configure:1426: checking whether stat file-mode macros are broken" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stat_broken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1434 "configure"
+#line 1431 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -1482,12 +1479,12 @@ fi
 
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:1486: checking for working const" >&5
+echo "configure:1483: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1491 "configure"
+#line 1488 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -1536,7 +1533,7 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:1540: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1537: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -1560,12 +1557,12 @@ fi
 for ac_func in setpgid sbrk select poll
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1564: checking for $ac_func" >&5
+echo "configure:1561: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1569 "configure"
+#line 1566 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1588,7 +1585,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1592: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1589: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1630,19 +1627,19 @@ EOF
 fi
 
 echo $ac_n "checking for gregset_t type""... $ac_c" 1>&6
-echo "configure:1634: checking for gregset_t type" >&5
+echo "configure:1631: checking for gregset_t type" >&5
 if eval "test \"`echo '$''{'gdb_cv_have_gregset_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1639 "configure"
+#line 1636 "configure"
 #include "confdefs.h"
 #include <sys/procfs.h>
 int main() {
 gregset_t *gregsetp = 0
 ; return 0; }
 EOF
-if { (eval echo configure:1646: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1643: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   gdb_cv_have_gregset_t=yes
 else
@@ -1663,19 +1660,19 @@ EOF
 fi
 
 echo $ac_n "checking for fpregset_t type""... $ac_c" 1>&6
-echo "configure:1667: checking for fpregset_t type" >&5
+echo "configure:1664: checking for fpregset_t type" >&5
 if eval "test \"`echo '$''{'gdb_cv_have_fpregset_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1672 "configure"
+#line 1669 "configure"
 #include "confdefs.h"
 #include <sys/procfs.h>
 int main() {
 fpregset_t *fpregsetp = 0
 ; return 0; }
 EOF
-if { (eval echo configure:1679: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1676: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   gdb_cv_have_fpregset_t=yes
 else
@@ -1696,7 +1693,7 @@ EOF
 fi
 
 echo $ac_n "checking for main in -lm""... $ac_c" 1>&6
-echo "configure:1700: checking for main in -lm" >&5
+echo "configure:1697: checking for main in -lm" >&5
 ac_lib_var=`echo m'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1704,14 +1701,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lm  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1708 "configure"
+#line 1705 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:1715: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1712: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1741,12 +1738,12 @@ fi
 
 
 echo $ac_n "checking for long long support in compiler""... $ac_c" 1>&6
-echo "configure:1745: checking for long long support in compiler" >&5
+echo "configure:1742: checking for long long support in compiler" >&5
 if eval "test \"`echo '$''{'gdb_cv_c_long_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1750 "configure"
+#line 1747 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -1756,7 +1753,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1760: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1757: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gdb_cv_c_long_long=yes
 else
@@ -1778,7 +1775,7 @@ fi
 
 
 echo $ac_n "checking for long long support in printf""... $ac_c" 1>&6
-echo "configure:1782: checking for long long support in printf" >&5
+echo "configure:1779: checking for long long support in printf" >&5
 if eval "test \"`echo '$''{'gdb_cv_printf_has_long_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1786,17 +1783,21 @@ else
   gdb_cv_printf_has_long_long=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 1790 "configure"
+#line 1787 "configure"
 #include "confdefs.h"
 
 int main () {
-  char buf[16];
-  long long l = 0x12345;
-  sprintf (buf, "%llx", l);
-  return (strcmp ("12345", buf));
+  char buf[32];
+  long long l = 0;
+  l = (l << 16) + 0x0123;
+  l = (l << 16) + 0x4567;
+  l = (l << 16) + 0x89ab;
+  l = (l << 16) + 0xcdef;
+  sprintf (buf, "0x%016llx", l);
+  return (strcmp ("0x0123456789abcdef", buf));
 }
 EOF
-if { (eval echo configure:1800: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1801: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   gdb_cv_printf_has_long_long=yes
 else
@@ -1820,19 +1821,19 @@ echo "$ac_t""$gdb_cv_printf_has_long_long" 1>&6
 
 
 echo $ac_n "checking for long double support in compiler""... $ac_c" 1>&6
-echo "configure:1824: checking for long double support in compiler" >&5
+echo "configure:1825: checking for long double support in compiler" >&5
 if eval "test \"`echo '$''{'ac_cv_c_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1829 "configure"
+#line 1830 "configure"
 #include "confdefs.h"
 
 int main() {
 long double foo;
 ; return 0; }
 EOF
-if { (eval echo configure:1836: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1837: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_long_double=yes
 else
@@ -1854,7 +1855,7 @@ fi
 
 
 echo $ac_n "checking for long double support in printf""... $ac_c" 1>&6
-echo "configure:1858: checking for long double support in printf" >&5
+echo "configure:1859: checking for long double support in printf" >&5
 if eval "test \"`echo '$''{'gdb_cv_printf_has_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1862,7 +1863,7 @@ else
   gdb_cv_printf_has_long_double=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 1866 "configure"
+#line 1867 "configure"
 #include "confdefs.h"
 
 int main () {
@@ -1872,7 +1873,7 @@ int main () {
   return (strncmp ("3.14159", buf, 7));
 }
 EOF
-if { (eval echo configure:1876: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1877: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   gdb_cv_printf_has_long_double=yes
 else
@@ -1894,21 +1895,63 @@ EOF
 fi
 echo "$ac_t""$gdb_cv_printf_has_long_double" 1>&6
 
+
+echo $ac_n "checking for long double support in scanf""... $ac_c" 1>&6
+echo "configure:1901: checking for long double support in scanf" >&5
+if eval "test \"`echo '$''{'gdb_cv_scanf_has_long_double'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test "$cross_compiling" = yes; then
+  gdb_cv_scanf_has_long_double=no
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1909 "configure"
+#include "confdefs.h"
+
+int main () {
+  char *buf = "3.141592653";
+  long double f = 0;
+  sscanf (buf, "%Lg", &f);
+  return !(f > 3.14159 && f < 3.14160);
+}
+EOF
+if { (eval echo configure:1919: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  gdb_cv_scanf_has_long_double=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  gdb_cv_scanf_has_long_double=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+if test $gdb_cv_scanf_has_long_double = yes; then
+  cat >> confdefs.h <<\EOF
+#define SCANF_HAS_LONG_DOUBLE 1
+EOF
+
+fi
+echo "$ac_t""$gdb_cv_scanf_has_long_double" 1>&6
+
 for ac_hdr in unistd.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1902: checking for $ac_hdr" >&5
+echo "configure:1945: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1907 "configure"
+#line 1950 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1912: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1955: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1937,12 +1980,12 @@ done
 for ac_func in getpagesize
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1941: checking for $ac_func" >&5
+echo "configure:1984: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1946 "configure"
+#line 1989 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1965,7 +2008,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1969: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:2012: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -1990,7 +2033,7 @@ fi
 done
 
 echo $ac_n "checking for working mmap""... $ac_c" 1>&6
-echo "configure:1994: checking for working mmap" >&5
+echo "configure:2037: checking for working mmap" >&5
 if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1998,7 +2041,7 @@ else
   ac_cv_func_mmap_fixed_mapped=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2002 "configure"
+#line 2045 "configure"
 #include "confdefs.h"
 
 /* Thanks to Mike Haertel and Jim Avera for this test.
@@ -2138,7 +2181,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:2142: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2185: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_mmap_fixed_mapped=yes
 else
@@ -2162,12 +2205,12 @@ fi
 
 
 echo $ac_n "checking whether malloc must be declared""... $ac_c" 1>&6
-echo "configure:2166: checking whether malloc must be declared" >&5
+echo "configure:2209: checking whether malloc must be declared" >&5
 if eval "test \"`echo '$''{'bfd_cv_decl_needed_malloc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2171 "configure"
+#line 2214 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2188,7 +2231,7 @@ int main() {
 char *(*pfn) = (char *(*)) malloc
 ; return 0; }
 EOF
-if { (eval echo configure:2192: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2235: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   bfd_cv_decl_needed_malloc=no
 else
@@ -2210,12 +2253,12 @@ EOF
 fi
 
 echo $ac_n "checking whether realloc must be declared""... $ac_c" 1>&6
-echo "configure:2214: checking whether realloc must be declared" >&5
+echo "configure:2257: checking whether realloc must be declared" >&5
 if eval "test \"`echo '$''{'bfd_cv_decl_needed_realloc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2219 "configure"
+#line 2262 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2236,7 +2279,7 @@ int main() {
 char *(*pfn) = (char *(*)) realloc
 ; return 0; }
 EOF
-if { (eval echo configure:2240: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2283: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   bfd_cv_decl_needed_realloc=no
 else
@@ -2258,12 +2301,12 @@ EOF
 fi
 
 echo $ac_n "checking whether free must be declared""... $ac_c" 1>&6
-echo "configure:2262: checking whether free must be declared" >&5
+echo "configure:2305: checking whether free must be declared" >&5
 if eval "test \"`echo '$''{'bfd_cv_decl_needed_free'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2267 "configure"
+#line 2310 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2284,7 +2327,7 @@ int main() {
 char *(*pfn) = (char *(*)) free
 ; return 0; }
 EOF
-if { (eval echo configure:2288: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2331: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   bfd_cv_decl_needed_free=no
 else
@@ -2312,7 +2355,7 @@ if test ${build} = ${host} -a ${host} = ${target} ; then
 	case ${host_os} in
 	hpux*)
 		echo $ac_n "checking for HPUX/OSF thread support""... $ac_c" 1>&6
-echo "configure:2316: checking for HPUX/OSF thread support" >&5
+echo "configure:2359: checking for HPUX/OSF thread support" >&5
 		if test -f /usr/include/dce/cma_config.h ; then
 			if test "$GCC" = "yes" ; then
 				echo "$ac_t""yes" 1>&6
@@ -2330,7 +2373,7 @@ EOF
 		;;
 	solaris*)
 		echo $ac_n "checking for Solaris thread debugging library""... $ac_c" 1>&6
-echo "configure:2334: checking for Solaris thread debugging library" >&5
+echo "configure:2377: checking for Solaris thread debugging library" >&5
 		if test -f /usr/lib/libthread_db.so.1 ; then
 			echo "$ac_t""yes" 1>&6
 			cat >> confdefs.h <<\EOF
@@ -2339,7 +2382,7 @@ EOF
 
 			CONFIG_OBS="${CONFIG_OBS} sol-thread.o"
 			echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
-echo "configure:2343: checking for dlopen in -ldl" >&5
+echo "configure:2386: checking for dlopen in -ldl" >&5
 ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2347,7 +2390,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2351 "configure"
+#line 2394 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2358,7 +2401,7 @@ int main() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:2362: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:2405: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2466,12 +2509,12 @@ fi
 
 # In the cygwin32 environment, we need some additional flags.
 echo $ac_n "checking for cygwin32""... $ac_c" 1>&6
-echo "configure:2470: checking for cygwin32" >&5
+echo "configure:2513: checking for cygwin32" >&5
 if eval "test \"`echo '$''{'gdb_cv_os_cygwin32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2475 "configure"
+#line 2518 "configure"
 #include "confdefs.h"
 
 #ifdef __CYGWIN32__
@@ -2524,7 +2567,7 @@ if test "${with_tclconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Tcl configuration""... $ac_c" 1>&6
-echo "configure:2528: checking for Tcl configuration" >&5
+echo "configure:2571: checking for Tcl configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_tclconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2632,7 +2675,7 @@ if test "${with_tkconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Tk configuration""... $ac_c" 1>&6
-echo "configure:2636: checking for Tk configuration" >&5
+echo "configure:2679: checking for Tk configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_tkconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2728,7 +2771,7 @@ fi
 
 no_tcl=true
 echo $ac_n "checking for Tcl private headers. dir=${configdir}""... $ac_c" 1>&6
-echo "configure:2732: checking for Tcl private headers. dir=${configdir}" >&5
+echo "configure:2775: checking for Tcl private headers. dir=${configdir}" >&5
 # Check whether --with-tclinclude or --without-tclinclude was given.
 if test "${with_tclinclude+set}" = set; then
   withval="$with_tclinclude"
@@ -2794,17 +2837,17 @@ fi
 if test x"${ac_cv_c_tclh}" = x ; then
    ac_safe=`echo "tclInt.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for tclInt.h""... $ac_c" 1>&6
-echo "configure:2798: checking for tclInt.h" >&5
+echo "configure:2841: checking for tclInt.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2803 "configure"
+#line 2846 "configure"
 #include "confdefs.h"
 #include <tclInt.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2808: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2851: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2864,7 +2907,7 @@ fi
 #
 no_tk=true
 echo $ac_n "checking for Tk private headers""... $ac_c" 1>&6
-echo "configure:2868: checking for Tk private headers" >&5
+echo "configure:2911: checking for Tk private headers" >&5
 # Check whether --with-tkinclude or --without-tkinclude was given.
 if test "${with_tkinclude+set}" = set; then
   withval="$with_tkinclude"
@@ -2930,17 +2973,17 @@ fi
 if test x"${ac_cv_c_tkh}" = x ; then
    ac_safe=`echo "tk.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for tk.h""... $ac_c" 1>&6
-echo "configure:2934: checking for tk.h" >&5
+echo "configure:2977: checking for tk.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2939 "configure"
+#line 2982 "configure"
 #include "confdefs.h"
 #include <tk.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2944: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2987: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2986,7 +3029,7 @@ fi
 
 	   
 echo $ac_n "checking for Itcl private headers. srcdir=${srcdir}""... $ac_c" 1>&6
-echo "configure:2990: checking for Itcl private headers. srcdir=${srcdir}" >&5
+echo "configure:3033: checking for Itcl private headers. srcdir=${srcdir}" >&5
 if test x"${ac_cv_c_itclh}" = x ; then
   for i in ${srcdir}/../itcl ${srcdir}/../../itcl ${srcdir}/../../../itcl ; do
     if test -f $i/src/itcl.h ; then
@@ -3009,7 +3052,7 @@ fi
 
 	   
 echo $ac_n "checking for Tix private headers. srcdir=${srcdir}""... $ac_c" 1>&6
-echo "configure:3013: checking for Tix private headers. srcdir=${srcdir}" >&5
+echo "configure:3056: checking for Tix private headers. srcdir=${srcdir}" >&5
 if test x"${ac_cv_c_tixh}" = x ; then
   for i in ${srcdir}/../tix ${srcdir}/../../tix ${srcdir}/../../../tix ; do
     if test -f $i/generic/tix.h ; then
@@ -3215,7 +3258,7 @@ links="${links} nm.h"
 fi
 # start-sanitize-gdbtk
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:3219: checking whether ln -s works" >&5
+echo "configure:3262: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3250,19 +3293,19 @@ fi
 
 
 echo $ac_n "checking for Cygwin32 environment""... $ac_c" 1>&6
-echo "configure:3254: checking for Cygwin32 environment" >&5
+echo "configure:3297: checking for Cygwin32 environment" >&5
 if eval "test \"`echo '$''{'am_cv_cygwin32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3259 "configure"
+#line 3302 "configure"
 #include "confdefs.h"
 
 int main() {
 int main () { return __CYGWIN32__; }
 ; return 0; }
 EOF
-if { (eval echo configure:3266: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3309: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   am_cv_cygwin32=yes
 else
@@ -3280,7 +3323,7 @@ CYGWIN32=
 test "$am_cv_cygwin32" = yes && CYGWIN32=yes
 
 echo $ac_n "checking for executable suffix""... $ac_c" 1>&6
-echo "configure:3284: checking for executable suffix" >&5
+echo "configure:3327: checking for executable suffix" >&5
 if eval "test \"`echo '$''{'am_cv_exeext'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3329,7 +3372,7 @@ EOF
 # Ultrix sh set writes to stderr and can't be redirected directly,
 # and sets the high bit in the cache file unless we assign to the vars.
 (set) 2>&1 |
-  case `(ac_space=' '; set) 2>&1 | grep ac_space` in
+  case `(ac_space=' '; set) 2>&1` in
   *ac_space=\ *)
     # `set' does not quote correctly, so add quotes (double-quote substitution
     # turns \\\\ into \\, and sed turns \\ into \).
@@ -3396,7 +3439,7 @@ do
     echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
     exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
   -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
-    echo "$CONFIG_STATUS generated by autoconf version 2.12.1"
+    echo "$CONFIG_STATUS generated by autoconf version 2.12"
     exit 0 ;;
   -help | --help | --hel | --he | --h)
     echo "\$ac_cs_usage"; exit 0 ;;
@@ -3416,7 +3459,6 @@ sed 's/%@/@@/; s/@%/@@/; s/%g\$/@g/; /@g\$/s/[\\\\&%]/\\\\&/g;
  s/@@/%@/; s/@@/@%/; s/@g\$/%g/' > conftest.subs <<\\CEOF
 $ac_vpsub
 $extrasub
-s%@SHELL@%$SHELL%g
 s%@CFLAGS@%$CFLAGS%g
 s%@CPPFLAGS@%$CPPFLAGS%g
 s%@CXXFLAGS@%$CXXFLAGS%g
diff --git a/gdb/configure.in b/gdb/configure.in
index e573c5e..429a5dc 100644
--- a/gdb/configure.in
+++ b/gdb/configure.in
@@ -119,10 +119,14 @@ AC_MSG_CHECKING(for long long support in printf)
 AC_CACHE_VAL(gdb_cv_printf_has_long_long,
 [AC_TRY_RUN([
 int main () {
-  char buf[16];
-  long long l = 0x12345;
-  sprintf (buf, "%llx", l);
-  return (strcmp ("12345", buf));
+  char buf[32];
+  long long l = 0;
+  l = (l << 16) + 0x0123;
+  l = (l << 16) + 0x4567;
+  l = (l << 16) + 0x89ab;
+  l = (l << 16) + 0xcdef;
+  sprintf (buf, "0x%016llx", l);
+  return (strcmp ("0x0123456789abcdef", buf));
 }],
 gdb_cv_printf_has_long_long=yes,
 gdb_cv_printf_has_long_long=no,
@@ -164,6 +168,25 @@ if test $gdb_cv_printf_has_long_double = yes; then
 fi
 AC_MSG_RESULT($gdb_cv_printf_has_long_double)
 
+dnl See if the compiler and runtime support scanning long doubles
+
+AC_MSG_CHECKING(for long double support in scanf)
+AC_CACHE_VAL(gdb_cv_scanf_has_long_double,
+[AC_TRY_RUN([
+int main () {
+  char *buf = "3.141592653";
+  long double f = 0;
+  sscanf (buf, "%Lg", &f);
+  return !(f > 3.14159 && f < 3.14160);
+}],
+gdb_cv_scanf_has_long_double=yes,
+gdb_cv_scanf_has_long_double=no,
+gdb_cv_scanf_has_long_double=no)])
+if test $gdb_cv_scanf_has_long_double = yes; then
+  AC_DEFINE(SCANF_HAS_LONG_DOUBLE)
+fi
+AC_MSG_RESULT($gdb_cv_scanf_has_long_double)
+
 AC_FUNC_MMAP
 
 BFD_NEED_DECLARATION(malloc)
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index cf2d318..9632bda 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,8 @@
+Mon Nov 24 13:55:21 1997  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* gdbint.texinfo (Host Conditionals): Document
+ 	PRINTF_HAS_LONG_DOUBLE, SCANF_HAS_LONG_DOUBLE, HAVE_LONG_DOUBLE.
+
 Fri Jul  4 14:52:31 1997  Ian Lance Taylor  <ian@cygnus.com>
 
 	* gdbint.texinfo (Host Conditionals): Add CRLF_SOURCE_LINES.