* configure: Rebuild with autoconf 2.12.

2 files changed, 490 insertions, 220 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 424c348..7b5e1c4 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+Tue Nov 26 17:21:37 1996  Ian Lance Taylor  <ian@cygnus.com>
+
+	* configure: Rebuild with autoconf 2.12.
+
 Mon Nov 25 13:17:16 1996  Fred Fish  <fnf@ninemoons.com>
 
 	From: Paul Eggert <eggert@twinsun.com>
diff --git a/gdb/configure b/gdb/configure
index 79f0b98..61af5e2 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 2.10 
+# 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
@@ -67,6 +67,8 @@ mandir='${prefix}/man'
 # Initialize some other variables.
 subdirs=
 MFLAGS= MAKEFLAGS=
+# Maximum number of lines to put in a shell here document.
+ac_max_here_lines=12
 
 ac_prev=
 for ac_option
@@ -348,7 +350,7 @@ EOF
     verbose=yes ;;
 
   -version | --version | --versio | --versi | --vers)
-    echo "configure generated by autoconf version 2.10"
+    echo "configure generated by autoconf version 2.12"
     exit 0 ;;
 
   -with-* | --with-*)
@@ -450,11 +452,14 @@ do
 done
 
 # NLS nuisances.
-# Only set LANG and LC_ALL to C if already set.
-# These must not be set unconditionally because not all systems understand
-# e.g. LANG=C (notably SCO).
-if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+# Only set these to C if already set.  These must not be set unconditionally
+# because not all systems understand e.g. LANG=C (notably SCO).
+# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
+# Non-C LC_CTYPE values break the ctype check.
 if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
+if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi
 
 # confdefs.h avoids OS command line length limits that DEFS can exceed.
 rm -rf conftest* confdefs.h
@@ -516,6 +521,7 @@ ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
 
 if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
   # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
@@ -535,6 +541,7 @@ 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:545: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -563,6 +570,7 @@ if test -z "$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:574: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -609,7 +617,47 @@ fi
   test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
 fi
 
+echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
+echo "configure:622: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+cat > conftest.$ac_ext <<EOF
+#line 632 "configure"
+#include "confdefs.h"
+main(){return(0);}
+EOF
+if { (eval echo configure:636: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  ac_cv_prog_cc_works=yes
+  # If we can't run a trivial program, we are probably using a cross compiler.
+  if (./conftest; exit) 2>/dev/null; then
+    ac_cv_prog_cc_cross=no
+  else
+    ac_cv_prog_cc_cross=yes
+  fi
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  ac_cv_prog_cc_works=no
+fi
+rm -fr conftest*
+
+echo "$ac_t""$ac_cv_prog_cc_works" 1>&6
+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""... $ac_c" 1>&6
+echo "configure:656: checking whether the C compiler ($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""... $ac_c" 1>&6
+echo "configure:661: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -618,7 +666,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:622: \"$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:670: \"$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
@@ -626,29 +674,34 @@ fi
 fi
 
 echo "$ac_t""$ac_cv_prog_gcc" 1>&6
+
 if test $ac_cv_prog_gcc = yes; then
   GCC=yes
-  if test "${CFLAGS+set}" != set; then
-    echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-if eval "test \"`echo '$''{'ac_cv_prog_gcc_g'+set}'`\" = set"; then
+  ac_test_CFLAGS="${CFLAGS+set}"
+  ac_save_CFLAGS="$CFLAGS"
+  CFLAGS=
+  echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
+echo "configure:685: checking whether ${CC-cc} accepts -g" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   echo 'void f(){}' > conftest.c
 if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
-  ac_cv_prog_gcc_g=yes
+  ac_cv_prog_cc_g=yes
 else
-  ac_cv_prog_gcc_g=no
+  ac_cv_prog_cc_g=no
 fi
 rm -f conftest*
 
 fi
 
-echo "$ac_t""$ac_cv_prog_gcc_g" 1>&6
-    if test $ac_cv_prog_gcc_g = yes; then
-      CFLAGS="-g -O"
-    else
-      CFLAGS="-O"
-    fi
+echo "$ac_t""$ac_cv_prog_cc_g" 1>&6
+  if test "$ac_test_CFLAGS" = set; then
+    CFLAGS="$ac_save_CFLAGS"
+  elif test $ac_cv_prog_cc_g = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-O2"
   fi
 else
   GCC=
@@ -656,6 +709,7 @@ else
 fi
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
+echo "configure:713: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -670,33 +724,37 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 674 "configure"
+#line 728 "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:680: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:734: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
 else
   echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 689 "configure"
+#line 745 "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:695: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:751: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
 else
   echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   CPP=/lib/cpp
 fi
@@ -712,8 +770,9 @@ fi
 echo "$ac_t""$CPP" 1>&6
 
 echo $ac_n "checking for AIX""... $ac_c" 1>&6
+echo "configure:774: checking for AIX" >&5
 cat > conftest.$ac_ext <<EOF
-#line 717 "configure"
+#line 776 "configure"
 #include "confdefs.h"
 #ifdef _AIX
   yes
@@ -734,24 +793,27 @@ fi
 rm -f conftest*
 
 
-ac_safe=`echo "minix/config.h" | tr './\055' '___'`
+ac_safe=`echo "minix/config.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for minix/config.h""... $ac_c" 1>&6
+echo "configure:799: checking for minix/config.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 744 "configure"
+#line 804 "configure"
 #include "confdefs.h"
 #include <minix/config.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:749: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:809: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=yes"
 else
   echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=no"
 fi
@@ -781,6 +843,7 @@ EOF
 fi
 
 echo $ac_n "checking for POSIXized ISC""... $ac_c" 1>&6
+echo "configure:847: 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
@@ -848,6 +911,7 @@ 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:915: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -862,12 +926,13 @@ NONE)
 esac
 
 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/'`
+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:936: checking target system type" >&5
 
 target_alias=$target
 case "$target_alias" in
@@ -879,12 +944,13 @@ NONE)
 esac
 
 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/'`
+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:954: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -896,9 +962,9 @@ NONE)
 esac
 
 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/'`
+build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$build" 1>&6
 
 test "$host_alias" != "$target_alias" &&
@@ -918,11 +984,12 @@ test "$host_alias" != "$target_alias" &&
 # 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""... $ac_c" 1>&6
+echo "configure:988: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
-    IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS="${IFS}:"
+    IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS="${IFS}:"
   for ac_dir in $PATH; do
     # Account for people who put trailing slashes in PATH elements.
     case "$ac_dir/" in
@@ -945,7 +1012,7 @@ else
       ;;
     esac
   done
-  IFS="$ac_save_ifs"
+  IFS="$ac_save_IFS"
 
 fi
   if test "${ac_cv_path_install+set}" = set; then
@@ -975,6 +1042,7 @@ fi
 # Extract the first word of "${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:1046: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1005,6 +1073,7 @@ fi
 # Extract the first word of "${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:1077: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1035,6 +1104,7 @@ if test -n "$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:1108: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1070,6 +1140,7 @@ do
 # Extract the first word of "$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:1144: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_YACC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1103,6 +1174,7 @@ do
 # Extract the first word of "$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:1178: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1170,38 +1242,13 @@ test "$program_suffix" != NONE &&
 test "$program_transform_name" = "" && program_transform_name="s,x,x,"
 
 
-# If we cannot run a trivial program, we must be cross compiling.
-echo $ac_n "checking whether cross-compiling""... $ac_c" 1>&6
-if eval "test \"`echo '$''{'ac_cv_c_cross'+set}'`\" = set"; then
-  echo $ac_n "(cached) $ac_c" 1>&6
-else
-  if test "$cross_compiling" = yes; then
-  ac_cv_c_cross=yes
-else
-cat > conftest.$ac_ext <<EOF
-#line 1183 "configure"
-#include "confdefs.h"
-main(){return(0);}
-EOF
-{ (eval echo configure:1187: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
-if test -s conftest && (./conftest; exit) 2>/dev/null; then
-  ac_cv_c_cross=no
-else
-  ac_cv_c_cross=yes
-fi
-fi
-rm -fr conftest*
-fi
-
-echo "$ac_t""$ac_cv_c_cross" 1>&6
-cross_compiling=$ac_cv_c_cross
-
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
+echo "configure:1247: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1205 "configure"
+#line 1252 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -1209,13 +1256,15 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1213: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1260: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
   ac_cv_header_stdc=yes
 else
   echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   ac_cv_header_stdc=no
 fi
@@ -1224,7 +1273,7 @@ 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 1228 "configure"
+#line 1277 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -1242,7 +1291,7 @@ 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 1246 "configure"
+#line 1295 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -1262,8 +1311,8 @@ if test $ac_cv_header_stdc = yes; then
 if test "$cross_compiling" = yes; then
   :
 else
-cat > conftest.$ac_ext <<EOF
-#line 1267 "configure"
+  cat > conftest.$ac_ext <<EOF
+#line 1316 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -1274,15 +1323,19 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-{ (eval echo configure:1278: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
-if test -s conftest && (./conftest; exit) 2>/dev/null; then
+if { (eval echo configure:1327: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
   :
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
   ac_cv_header_stdc=no
 fi
-fi
 rm -fr conftest*
 fi
+
+fi
 fi
 
 echo "$ac_t""$ac_cv_header_stdc" 1>&6
@@ -1295,24 +1348,27 @@ fi
 
 for ac_hdr in limits.h memory.h string.h strings.h unistd.h termios.h termio.h sgtty.h stddef.h stdlib.h sys/procfs.h link.h endian.h
 do
-ac_safe=`echo "$ac_hdr" | tr './\055' '___'`
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:1354: 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 1305 "configure"
+#line 1359 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1310: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1364: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=yes"
 else
   echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=no"
 fi
@@ -1320,7 +1376,7 @@ rm -f conftest*
 fi
 if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
   echo "$ac_t""yes" 1>&6
-    ac_tr_hdr=HAVE_`echo $ac_hdr | tr 'abcdefghijklmnopqrstuvwxyz./\055' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ___'`
+    ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
   cat >> confdefs.h <<EOF
 #define $ac_tr_hdr 1
 EOF
@@ -1331,11 +1387,12 @@ fi
 done
 
 echo $ac_n "checking whether stat file-mode macros are broken""... $ac_c" 1>&6
+echo "configure:1391: checking whether stat file-mode macros are broken" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stat_broken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1339 "configure"
+#line 1396 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -1387,15 +1444,15 @@ fi
 
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
+echo "configure:1448: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1395 "configure"
+#line 1453 "configure"
 #include "confdefs.h"
 
-int main() { return 0; }
-int t() {
+int main() {
 
 /* Ultrix mips cc rejects this.  */
 typedef int charset[2]; const charset x;
@@ -1441,15 +1498,16 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:1445: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1502: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   ac_cv_c_const=no
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$ac_cv_c_const" 1>&6
@@ -1464,11 +1522,12 @@ fi
 for ac_func in setpgid sbrk select poll
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:1526: 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 1472 "configure"
+#line 1531 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1478,8 +1537,7 @@ else
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
 
-int main() { return 0; }
-int t() {
+int main() {
 
 /* The GNU C library defines this for functions which it implements
     to always fail with ENOSYS.  Some functions are actually named
@@ -1492,16 +1550,18 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1496: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1554: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=no"
 fi
 rm -f conftest*
-
 fi
+
 if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
   echo "$ac_t""yes" 1>&6
     ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
@@ -1532,27 +1592,28 @@ EOF
 fi
 
 echo $ac_n "checking for gregset_t type""... $ac_c" 1>&6
+echo "configure:1596: checking for gregset_t type" >&5
 if eval "test \"`echo '$''{'gdb_cv_have_gregset_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1540 "configure"
+#line 1601 "configure"
 #include "confdefs.h"
 #include <sys/procfs.h>
-int main() { return 0; }
-int t() {
+int main() {
 gregset_t *gregsetp = 0
 ; return 0; }
 EOF
-if { (eval echo configure:1548: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1608: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   gdb_cv_have_gregset_t=yes
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   gdb_cv_have_gregset_t=no
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$gdb_cv_have_gregset_t" 1>&6
@@ -1564,27 +1625,28 @@ EOF
 fi
 
 echo $ac_n "checking for fpregset_t type""... $ac_c" 1>&6
+echo "configure:1629: checking for fpregset_t type" >&5
 if eval "test \"`echo '$''{'gdb_cv_have_fpregset_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1572 "configure"
+#line 1634 "configure"
 #include "confdefs.h"
 #include <sys/procfs.h>
-int main() { return 0; }
-int t() {
+int main() {
 fpregset_t *fpregsetp = 0
 ; return 0; }
 EOF
-if { (eval echo configure:1580: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1641: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   gdb_cv_have_fpregset_t=yes
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   gdb_cv_have_fpregset_t=no
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$gdb_cv_have_fpregset_t" 1>&6
@@ -1597,30 +1659,31 @@ fi
 
 
 echo $ac_n "checking for long long support in compiler""... $ac_c" 1>&6
+echo "configure:1663: checking for long long support in compiler" >&5
 if eval "test \"`echo '$''{'gdb_cv_c_long_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1605 "configure"
+#line 1668 "configure"
 #include "confdefs.h"
 
-int main() { return 0; }
-int t() {
+int main() {
 
   extern long long foo;
   switch (foo & 2) { case 0: return 1; }
 
 ; return 0; }
 EOF
-if { (eval echo configure:1616: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1678: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   gdb_cv_c_long_long=yes
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   gdb_cv_c_long_long=no
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$gdb_cv_c_long_long" 1>&6
@@ -1633,14 +1696,15 @@ fi
 
 
 echo $ac_n "checking for long long support in printf""... $ac_c" 1>&6
+echo "configure:1700: checking for long long support in printf" >&5
 if eval "test \"`echo '$''{'gdb_cv_printf_has_long_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
   gdb_cv_printf_has_long_long=no
 else
-cat > conftest.$ac_ext <<EOF
-#line 1644 "configure"
+  cat > conftest.$ac_ext <<EOF
+#line 1708 "configure"
 #include "confdefs.h"
 
 int main () {
@@ -1650,16 +1714,20 @@ int main () {
   return (strcmp ("12345", buf));
 }
 EOF
-{ (eval echo configure:1654: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
-if test -s conftest && (./conftest; exit) 2>/dev/null; then
+if { (eval echo configure:1718: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
   gdb_cv_printf_has_long_long=yes
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
   gdb_cv_printf_has_long_long=no
 fi
-fi
 rm -fr conftest*
 fi
 
+fi
+
 if test $gdb_cv_printf_has_long_long = yes; then
   cat >> confdefs.h <<\EOF
 #define PRINTF_HAS_LONG_LONG 1
@@ -1670,27 +1738,28 @@ echo "$ac_t""$gdb_cv_printf_has_long_long" 1>&6
 
 
 echo $ac_n "checking for long double support in compiler""... $ac_c" 1>&6
+echo "configure:1742: checking for long double support in compiler" >&5
 if eval "test \"`echo '$''{'ac_cv_c_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1678 "configure"
+#line 1747 "configure"
 #include "confdefs.h"
 
-int main() { return 0; }
-int t() {
+int main() {
 long double foo;
 ; return 0; }
 EOF
-if { (eval echo configure:1686: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1754: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_long_double=yes
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   ac_cv_c_long_double=no
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$ac_cv_c_long_double" 1>&6
@@ -1703,14 +1772,15 @@ fi
 
 
 echo $ac_n "checking for long double support in printf""... $ac_c" 1>&6
+echo "configure:1776: checking for long double support in printf" >&5
 if eval "test \"`echo '$''{'gdb_cv_printf_has_long_double'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
   gdb_cv_printf_has_long_double=no
 else
-cat > conftest.$ac_ext <<EOF
-#line 1714 "configure"
+  cat > conftest.$ac_ext <<EOF
+#line 1784 "configure"
 #include "confdefs.h"
 
 int main () {
@@ -1720,16 +1790,20 @@ int main () {
   return (strncmp ("3.14159", buf, 7));
 }
 EOF
-{ (eval echo configure:1724: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
-if test -s conftest && (./conftest; exit) 2>/dev/null; then
+if { (eval echo configure:1794: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
   gdb_cv_printf_has_long_double=yes
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
   gdb_cv_printf_has_long_double=no
 fi
-fi
 rm -fr conftest*
 fi
 
+fi
+
 if test $gdb_cv_printf_has_long_double = yes; then
   cat >> confdefs.h <<\EOF
 #define PRINTF_HAS_LONG_DOUBLE 1
@@ -1738,14 +1812,55 @@ EOF
 fi
 echo "$ac_t""$gdb_cv_printf_has_long_double" 1>&6
 
-for ac_func in valloc getpagesize
+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:1820: 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 1825 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:1830: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
+for ac_func in getpagesize
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:1859: 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 1749 "configure"
+#line 1864 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1755,8 +1870,7 @@ else
     builtin and then its argument prototype would still apply.  */
 char $ac_func();
 
-int main() { return 0; }
-int t() {
+int main() {
 
 /* The GNU C library defines this for functions which it implements
     to always fail with ENOSYS.  Some functions are actually named
@@ -1769,16 +1883,18 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1773: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1887: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=no"
 fi
 rm -f conftest*
-
 fi
+
 if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
   echo "$ac_t""yes" 1>&6
     ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
@@ -1792,94 +1908,170 @@ fi
 done
 
 echo $ac_n "checking for working mmap""... $ac_c" 1>&6
-if eval "test \"`echo '$''{'ac_cv_func_mmap'+set}'`\" = set"; then
+echo "configure:1912: checking for working mmap" >&5
+if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
-  ac_cv_func_mmap=no
+  ac_cv_func_mmap_fixed_mapped=no
 else
-cat > conftest.$ac_ext <<EOF
-#line 1803 "configure"
+  cat > conftest.$ac_ext <<EOF
+#line 1920 "configure"
 #include "confdefs.h"
 
-/* Thanks to Mike Haertel and Jim Avera for this test. */
+/* Thanks to Mike Haertel and Jim Avera for this test.
+   Here is a matrix of mmap possibilities:
+	mmap private not fixed
+	mmap private fixed at somewhere currently unmapped
+	mmap private fixed at somewhere already mapped
+	mmap shared not fixed
+	mmap shared fixed at somewhere currently unmapped
+	mmap shared fixed at somewhere already mapped
+   For private mappings, we should verify that changes cannot be read()
+   back from the file, nor mmap's back from the file at a different
+   address.  (There have been systems where private was not correctly
+   implemented like the infamous i386 svr4.0, and systems where the
+   VM page cache was not coherent with the filesystem buffer cache
+   like early versions of FreeBSD and possibly contemporary NetBSD.)
+   For shared mappings, we should conversely verify that changes get
+   propogated back to all the places they're supposed to be.
+
+   Grep wants private fixed already mapped.
+   The main things grep needs to know about mmap are:
+   * does it exist and is it safe to write into the mmap'd area
+   * how to use it (BSD variants)  */
 #include <sys/types.h>
 #include <fcntl.h>
 #include <sys/mman.h>
 
+/* This mess was copied from the GNU getpagesize.h.  */
 #ifndef HAVE_GETPAGESIZE
-# include <sys/param.h>
-# ifdef EXEC_PAGESIZE
-#  define getpagesize() EXEC_PAGESIZE
-# else
-#  ifdef NBPG
-#   define getpagesize() NBPG * CLSIZE
-#   ifndef CLSIZE
-#    define CLSIZE 1
-#   endif
-#  else
-#   ifdef NBPC
-#    define getpagesize() NBPC
-#   else
-#    define getpagesize() PAGESIZE /* SVR4 */
-#   endif
-#  endif
+# ifdef HAVE_UNISTD_H
+#  include <unistd.h>
 # endif
-#endif
 
-#ifndef HAVE_VALLOC
-# define valloc malloc
-#endif
+/* Assume that all systems that can run configure have sys/param.h.  */
+# ifndef HAVE_SYS_PARAM_H
+#  define HAVE_SYS_PARAM_H 1
+# endif
+
+# ifdef _SC_PAGESIZE
+#  define getpagesize() sysconf(_SC_PAGESIZE)
+# else /* no _SC_PAGESIZE */
+#  ifdef HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#   ifdef EXEC_PAGESIZE
+#    define getpagesize() EXEC_PAGESIZE
+#   else /* no EXEC_PAGESIZE */
+#    ifdef NBPG
+#     define getpagesize() NBPG * CLSIZE
+#     ifndef CLSIZE
+#      define CLSIZE 1
+#     endif /* no CLSIZE */
+#    else /* no NBPG */
+#     ifdef NBPC
+#      define getpagesize() NBPC
+#     else /* no NBPC */
+#      ifdef PAGESIZE
+#       define getpagesize() PAGESIZE
+#      endif /* PAGESIZE */
+#     endif /* no NBPC */
+#    endif /* no NBPG */
+#   endif /* no EXEC_PAGESIZE */
+#  else /* no HAVE_SYS_PARAM_H */
+#   define getpagesize() 8192	/* punt totally */
+#  endif /* no HAVE_SYS_PARAM_H */
+# endif /* no _SC_PAGESIZE */
+
+#endif /* no HAVE_GETPAGESIZE */
 
 #ifdef __cplusplus
-extern "C" { void *valloc(unsigned), *malloc(unsigned); }
+extern "C" { void *malloc(unsigned); }
 #else
-char *valloc(), *malloc();
+char *malloc();
 #endif
 
 int
 main()
 {
-  char *buf1, *buf2, *buf3;
-  int i = getpagesize(), j;
-  int i2 = i * 2;
-  int fd;
-
-  buf1 = (char *)valloc(i2);
-  buf2 = (char *)valloc(i);
-  buf3 = (char *)malloc(i2);
-  for (j = 0; j < i2; ++j)
-    *(buf1 + j) = rand();
-  fd = open("conftestmmap", O_CREAT | O_RDWR, 0666);
-  write(fd, buf1, i2);
-  mmap(buf2, i, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, fd, 0);
-  for (j = 0; j < i; ++j)
-    if (*(buf1 + j) != *(buf2 + j))
-      exit(1);
-  lseek(fd, (long)i, 0);
-  read(fd, buf2, i); /* read into mapped memory -- file should not change */
-  /* (it does in i386 SVR4.0 - Jim Avera, jima@netcom.com) */
-  lseek(fd, (long)0, 0);
-  read(fd, buf3, i2);
-  for (j = 0; j < i2; ++j)
-    if (*(buf1 + j) != *(buf3 + j))
-      exit(1);
-  exit(0);
+	char *data, *data2, *data3;
+	int i, pagesize;
+	int fd;
+
+	pagesize = getpagesize();
+
+	/*
+	 * First, make a file with some known garbage in it.
+	 */
+	data = malloc(pagesize);
+	if (!data)
+		exit(1);
+	for (i = 0; i < pagesize; ++i)
+		*(data + i) = rand();
+	umask(0);
+	fd = creat("conftestmmap", 0600);
+	if (fd < 0)
+		exit(1);
+	if (write(fd, data, pagesize) != pagesize)
+		exit(1);
+	close(fd);
+
+	/*
+	 * Next, try to mmap the file at a fixed address which
+	 * already has something else allocated at it.  If we can,
+	 * also make sure that we see the same garbage.
+	 */
+	fd = open("conftestmmap", O_RDWR);
+	if (fd < 0)
+		exit(1);
+	data2 = malloc(2 * pagesize);
+	if (!data2)
+		exit(1);
+	data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
+	if (data2 != mmap(data2, pagesize, PROT_READ | PROT_WRITE,
+	    MAP_PRIVATE | MAP_FIXED, fd, 0L))
+		exit(1);
+	for (i = 0; i < pagesize; ++i)
+		if (*(data + i) != *(data2 + i))
+			exit(1);
+
+	/*
+	 * Finally, make sure that changes to the mapped area
+	 * do not percolate back to the file as seen by read().
+	 * (This is a bug on some variants of i386 svr4.0.)
+	 */
+	for (i = 0; i < pagesize; ++i)
+		*(data2 + i) = *(data2 + i) + 1;
+	data3 = malloc(pagesize);
+	if (!data3)
+		exit(1);
+	if (read(fd, data3, pagesize) != pagesize)
+		exit(1);
+	for (i = 0; i < pagesize; ++i)
+		if (*(data + i) != *(data3 + i))
+			exit(1);
+	close(fd);
+	unlink("conftestmmap");
+	exit(0);
 }
 
 EOF
-{ (eval echo configure:1872: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
-if test -s conftest && (./conftest; exit) 2>/dev/null; then
-  ac_cv_func_mmap=yes
+if { (eval echo configure:2060: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+then
+  ac_cv_func_mmap_fixed_mapped=yes
 else
-  ac_cv_func_mmap=no
-fi
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  ac_cv_func_mmap_fixed_mapped=no
 fi
 rm -fr conftest*
 fi
 
-echo "$ac_t""$ac_cv_func_mmap" 1>&6
-if test $ac_cv_func_mmap = yes; then
+fi
+
+echo "$ac_t""$ac_cv_func_mmap_fixed_mapped" 1>&6
+if test $ac_cv_func_mmap_fixed_mapped = yes; then
   cat >> confdefs.h <<\EOF
 #define HAVE_MMAP 1
 EOF
@@ -1888,11 +2080,12 @@ fi
 
 
 echo $ac_n "checking whether malloc must be declared""... $ac_c" 1>&6
+echo "configure:2084: checking whether malloc must be declared" >&5
 if eval "test \"`echo '$''{'bfd_cv_decl_needed_malloc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1896 "configure"
+#line 2089 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -1909,20 +2102,20 @@ else
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-int main() { return 0; }
-int t() {
+int main() {
 char *(*pfn) = (char *(*)) malloc
 ; return 0; }
 EOF
-if { (eval echo configure:1918: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2110: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   bfd_cv_decl_needed_malloc=no
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   bfd_cv_decl_needed_malloc=yes
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$bfd_cv_decl_needed_malloc" 1>&6
@@ -1935,11 +2128,12 @@ EOF
 fi
 
 echo $ac_n "checking whether realloc must be declared""... $ac_c" 1>&6
+echo "configure:2132: checking whether realloc must be declared" >&5
 if eval "test \"`echo '$''{'bfd_cv_decl_needed_realloc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1943 "configure"
+#line 2137 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -1956,20 +2150,20 @@ else
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-int main() { return 0; }
-int t() {
+int main() {
 char *(*pfn) = (char *(*)) realloc
 ; return 0; }
 EOF
-if { (eval echo configure:1965: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2158: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   bfd_cv_decl_needed_realloc=no
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   bfd_cv_decl_needed_realloc=yes
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$bfd_cv_decl_needed_realloc" 1>&6
@@ -1982,11 +2176,12 @@ EOF
 fi
 
 echo $ac_n "checking whether free must be declared""... $ac_c" 1>&6
+echo "configure:2180: checking whether free must be declared" >&5
 if eval "test \"`echo '$''{'bfd_cv_decl_needed_free'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1990 "configure"
+#line 2185 "configure"
 #include "confdefs.h"
 
 #include <stdio.h>
@@ -2003,20 +2198,20 @@ else
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-int main() { return 0; }
-int t() {
+int main() {
 char *(*pfn) = (char *(*)) free
 ; return 0; }
 EOF
-if { (eval echo configure:2012: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2206: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   bfd_cv_decl_needed_free=no
 else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   bfd_cv_decl_needed_free=yes
 fi
 rm -f conftest*
-
 fi
 
 echo "$ac_t""$bfd_cv_decl_needed_free" 1>&6
@@ -2033,6 +2228,7 @@ fi
 
 if test ${build} = ${host} -a ${host} = ${target} ; then
 	echo $ac_n "checking for Solaris thread debugging library""... $ac_c" 1>&6
+echo "configure:2232: checking for Solaris thread debugging library" >&5
 	if test -f /usr/lib/libthread_db.so.1 ; then
 		echo "$ac_t""yes" 1>&6
 		THREAD_DB_OBS=sol-thread.o
@@ -2047,6 +2243,7 @@ EOF
 	case ${host_os} in
 	hpux*)
 		echo $ac_n "checking for HPUX/OSF thread support""... $ac_c" 1>&6
+echo "configure:2247: checking for HPUX/OSF thread support" >&5
 		if test -f /usr/include/dce/cma_config.h ; then
 			echo "$ac_t""yes" 1>&6
 			cat >> confdefs.h <<\EOF
@@ -2168,6 +2365,7 @@ if test "${with_tclconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Tcl configuration""... $ac_c" 1>&6
+echo "configure:2369: checking for Tcl configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_tclconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2275,6 +2473,7 @@ if test "${with_tkconfig+set}" = set; then
 fi
 
   echo $ac_n "checking for Tk configuration""... $ac_c" 1>&6
+echo "configure:2477: checking for Tk configuration" >&5
   if eval "test \"`echo '$''{'ac_cv_c_tkconfig'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2368,6 +2567,7 @@ fi
 #
 no_tcl=true
 echo $ac_n "checking for Tcl private headers""... $ac_c" 1>&6
+echo "configure:2571: checking for Tcl private headers" >&5
 # Check whether --with-tclinclude or --without-tclinclude was given.
 if test "${with_tclinclude+set}" = set; then
   withval="$with_tclinclude"
@@ -2431,24 +2631,27 @@ if test x"${ac_cv_c_tclh}" = x ; then
 fi
 # see if one is installed
 if test x"${ac_cv_c_tclh}" = x ; then
-   ac_safe=`echo "tclInt.h" | tr './\055' '___'`
+   ac_safe=`echo "tclInt.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for tclInt.h""... $ac_c" 1>&6
+echo "configure:2637: checking for tclInt.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2441 "configure"
+#line 2642 "configure"
 #include "confdefs.h"
 #include <tclInt.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2446: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2647: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=yes"
 else
   echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=no"
 fi
@@ -2500,6 +2703,7 @@ fi
 #
 no_tk=true
 echo $ac_n "checking for Tk private headers""... $ac_c" 1>&6
+echo "configure:2707: checking for Tk private headers" >&5
 # Check whether --with-tkinclude or --without-tkinclude was given.
 if test "${with_tkinclude+set}" = set; then
   withval="$with_tkinclude"
@@ -2563,24 +2767,27 @@ if test x"${ac_cv_c_tkh}" = x ; then
 fi
 # see if one is installed
 if test x"${ac_cv_c_tkh}" = x ; then
-   ac_safe=`echo "tk.h" | tr './\055' '___'`
+   ac_safe=`echo "tk.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for tk.h""... $ac_c" 1>&6
+echo "configure:2773: checking for tk.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2573 "configure"
+#line 2778 "configure"
 #include "confdefs.h"
 #include <tk.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2578: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2783: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=yes"
 else
   echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
   rm -rf conftest*
   eval "ac_cv_header_$ac_safe=no"
 fi
@@ -2812,11 +3019,25 @@ cat > confcache <<\EOF
 # --recheck option to rerun configure.
 #
 EOF
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
 # 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 |
-  sed -n "s/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=\${\1='\2'}/p" \
-  >> confcache
+  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 \).
+    sed -n \
+      -e "s/'/'\\\\''/g" \
+      -e "s/^\\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\\)=\\(.*\\)/\\1=\${\\1='\\2'}/p"
+    ;;
+  *)
+    # `set' quotes correctly as required by POSIX, so do not add quotes.
+    sed -n -e 's/^\([a-zA-Z0-9_]*_cv_[a-zA-Z0-9_]*\)=\(.*\)/\1=${\1=\2}/p'
+    ;;
+  esac >> confcache
 if cmp -s $cache_file confcache; then
   :
 else
@@ -2871,7 +3092,7 @@ 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 2.10"
+    echo "$CONFIG_STATUS generated by autoconf version 2.12"
     exit 0 ;;
   -help | --help | --hel | --he | --h)
     echo "\$ac_cs_usage"; exit 0 ;;
@@ -2981,20 +3202,56 @@ s%@subdirs@%$subdirs%g
 
 CEOF
 EOF
+
+cat >> $CONFIG_STATUS <<\EOF
+
+# Split the substitutions into bite-sized pieces for seds with
+# small command number limits, like on Digital OSF/1 and HP-UX.
+ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script.
+ac_file=1 # Number of current file.
+ac_beg=1 # First line for current file.
+ac_end=$ac_max_sed_cmds # Line after last line for current file.
+ac_more_lines=:
+ac_sed_cmds=""
+while $ac_more_lines; do
+  if test $ac_beg -gt 1; then
+    sed "1,${ac_beg}d; ${ac_end}q" conftest.subs > conftest.s$ac_file
+  else
+    sed "${ac_end}q" conftest.subs > conftest.s$ac_file
+  fi
+  if test ! -s conftest.s$ac_file; then
+    ac_more_lines=false
+    rm -f conftest.s$ac_file
+  else
+    if test -z "$ac_sed_cmds"; then
+      ac_sed_cmds="sed -f conftest.s$ac_file"
+    else
+      ac_sed_cmds="$ac_sed_cmds | sed -f conftest.s$ac_file"
+    fi
+    ac_file=`expr $ac_file + 1`
+    ac_beg=$ac_end
+    ac_end=`expr $ac_end + $ac_max_sed_cmds`
+  fi
+done
+if test -z "$ac_sed_cmds"; then
+  ac_sed_cmds=cat
+fi
+EOF
+
 cat >> $CONFIG_STATUS <<EOF
 
 CONFIG_FILES=\${CONFIG_FILES-"Makefile"}
 EOF
 cat >> $CONFIG_STATUS <<\EOF
 for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
-  # Support "outfile[:infile]", defaulting infile="outfile.in".
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
   case "$ac_file" in
-  *:*) ac_file_in=`echo "$ac_file"|sed 's%.*:%%'`
+  *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
        ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
   *) ac_file_in="${ac_file}.in" ;;
   esac
 
-  # Adjust relative srcdir, etc. for subdirectories.
+  # Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
 
   # Remove last slash and all that follows it.  Not all systems have dirname.
   ac_dir=`echo $ac_file|sed 's%/[^/][^/]*$%%'`
@@ -3022,6 +3279,7 @@ for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
   [/$]*) INSTALL="$ac_given_INSTALL" ;;
   *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
   esac
+
   echo creating "$ac_file"
   rm -f "$ac_file"
   configure_input="Generated automatically from `echo $ac_file_in|sed 's%.*/%%'` by configure."
@@ -3030,14 +3288,16 @@ for ac_file in .. $CONFIG_FILES; do if test "x$ac_file" != x..; then
 # $configure_input" ;;
   *) ac_comsub= ;;
   esac
+
+  ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
   sed -e "$ac_comsub
 s%@configure_input@%$configure_input%g
 s%@srcdir@%$srcdir%g
 s%@top_srcdir@%$top_srcdir%g
 s%@INSTALL@%$INSTALL%g
-" -f conftest.subs $ac_given_srcdir/$ac_file_in > $ac_file
+" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file
 fi; done
-rm -f conftest.subs
+rm -f conftest.s*
 
 # These sed commands are passed to sed as "A NAME B NAME C VALUE D", where
 # NAME is the cpp macro being defined and VALUE is the value it is being given.
@@ -3058,11 +3318,17 @@ ac_eB='$%\1#\2define\3'
 ac_eC=' '
 ac_eD='%g'
 
-CONFIG_HEADERS=${CONFIG_HEADERS-"config.h:config.in"}
+if test "${CONFIG_HEADERS+set}" != set; then
+EOF
+cat >> $CONFIG_STATUS <<EOF
+  CONFIG_HEADERS="config.h:config.in"
+EOF
+cat >> $CONFIG_STATUS <<\EOF
+fi
 for ac_file in .. $CONFIG_HEADERS; do if test "x$ac_file" != x..; then
-  # Support "outfile[:infile]", defaulting infile="outfile.in".
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
   case "$ac_file" in
-  *:*) ac_file_in=`echo "$ac_file"|sed 's%.*:%%'`
+  *:*) ac_file_in=`echo "$ac_file"|sed 's%[^:]*:%%'`
        ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
   *) ac_file_in="${ac_file}.in" ;;
   esac
@@ -3070,7 +3336,8 @@ for ac_file in .. $CONFIG_HEADERS; do if test "x$ac_file" != x..; then
   echo creating $ac_file
 
   rm -f conftest.frag conftest.in conftest.out
-  cp $ac_given_srcdir/$ac_file_in conftest.in
+  ac_file_inputs=`echo $ac_file_in|sed -e "s%^%$ac_given_srcdir/%" -e "s%:% $ac_given_srcdir/%g"`
+  cat $ac_file_inputs > conftest.in
 
 EOF
 
@@ -3098,8 +3365,6 @@ EOF
 
 # Break up conftest.vals because some shells have a limit on
 # the size of here documents, and old seds have small limits too.
-# Maximum number of lines to put in a single here document.
-ac_max_here_lines=12
 
 rm -f conftest.tail
 while :
@@ -3274,13 +3539,16 @@ if test "$no_recursion" != yes; then
     ac_popdir=`pwd`
     cd $ac_config_dir
 
+      # A "../" for each directory in /$ac_config_dir.
+      ac_dots=`echo $ac_config_dir|sed -e 's%^\./%%' -e 's%[^/]$%&/%' -e 's%[^/]*/%../%g'`
+
     case "$srcdir" in
     .) # No --srcdir option.  We are building in place.
       ac_sub_srcdir=$srcdir ;;
     /*) # Absolute path.
       ac_sub_srcdir=$srcdir/$ac_config_dir ;;
     *) # Relative path.
-      ac_sub_srcdir=../$srcdir/$ac_config_dir ;;
+      ac_sub_srcdir=$ac_dots$srcdir/$ac_config_dir ;;
     esac
 
     # Check for guested configure; otherwise get Cygnus style configure.
@@ -3297,8 +3565,6 @@ if test "$no_recursion" != yes; then
     if test -n "$ac_sub_configure"; then
 
       # Make the cache file name correct relative to the subdirectory.
-      # A "../" for each directory in /$ac_config_dir.
-      ac_dots=`echo $ac_config_dir|sed -e 's%^\./%%' -e 's%[^/]$%&/%' -e 's%[^/]*/%../%g'`
       case "$cache_file" in
       /*) ac_sub_cache_file=$cache_file ;;
       *) # Relative path.