Import readline 8.0

This imports readline 8.0.

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

	* Imported readline 8.0.

4 files changed, 277 insertions, 136 deletions

diff --git a/readline/support/config.guess b/readline/support/config.guess
index 637da23..15c6cbf 100755
--- a/readline/support/config.guess
+++ b/readline/support/config.guess
@@ -247,7 +247,7 @@ case "$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
 	exit ;;
     *:Bitrig:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
-	echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE}
+	echo "$UNAME_MACHINE_ARCH"-unknown-bitrig"$UNAME_RELEASE"
 	exit ;;
     *:OpenBSD:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
@@ -395,7 +395,7 @@ case "$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
 	echo i386-pc-auroraux"$UNAME_RELEASE"
 	exit ;;
     i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
-	echo i386-pc-auroraux${UNAME_RELEASE}
+	echo i386-pc-auroraux"$UNAME_RELEASE"
 	exit ;;
     i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
 	set_cc_for_build
@@ -877,7 +877,7 @@ EOF
 	echo "$UNAME_MACHINE"-pc-mingw64
 	exit ;;
     *:MINGW64*:*)
-	echo ${UNAME_MACHINE}-pc-mingw64
+	echo "$UNAME_MACHINE"-pc-mingw64
 	exit ;;
     *:MINGW*:*)
 	echo "$UNAME_MACHINE"-pc-mingw32
@@ -945,11 +945,11 @@ EOF
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
     aarch64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
     aarch64_be:Linux:*:*)
 	UNAME_MACHINE=aarch64_be
-	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
     alpha:Linux:*:*)
 	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
@@ -962,11 +962,11 @@ EOF
 	  EV68*) UNAME_MACHINE=alphaev68 ;;
 	esac
 	objdump --private-headers /bin/sh | grep -q ld.so.1
-	if test "$?" = 0 ; then LIBC="gnulibc1" ; fi
-	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
     arc:Linux:*:* | arceb:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
     arm*:Linux:*:*)
 	set_cc_for_build
@@ -1494,10 +1494,13 @@ EOF
 	echo "$UNAME_MACHINE"-unknown-unleashed"$UNAME_RELEASE"
 	exit ;;
     i*86:AROS:*:*)
-	echo ${UNAME_MACHINE}-pc-aros
+	echo "$UNAME_MACHINE"-pc-aros
 	exit ;;
     x86_64:VMkernel:*:*)
-	echo ${UNAME_MACHINE}-unknown-esx
+	echo "$UNAME_MACHINE"-unknown-esx
+	exit ;;
+    amd64:Isilon\ OneFS:*:*)
+	echo x86_64-unknown-onefs
 	exit ;;
 esac
 
@@ -1624,12 +1627,13 @@ main ()
 #endif
 #endif
 
-#if defined (alliant) && defined (i860)
-  printf ("i860-alliant-bsd\n"); exit (0);
-#endif
+case "$UNAME_MACHINE:$UNAME_SYSTEM" in
+    mips:Linux | mips64:Linux)
+	# If we got here on MIPS GNU/Linux, output extra information.
+	cat >&2 <<EOF
 
-  exit (1);
-}
+NOTE: MIPS GNU/Linux systems require a C compiler to fully recognize
+the system type. Please install a C compiler and try again.
 EOF
 
 $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`$dummy` &&
diff --git a/readline/support/config.rpath b/readline/support/config.rpath
index b6c4d8f..fc5913d 100755
--- a/readline/support/config.rpath
+++ b/readline/support/config.rpath
@@ -2,27 +2,13 @@
 # Output a system dependent set of variables, describing how to set the
 # run time search path of shared libraries in an executable.
 #
-#   Copyright 1996-2003 Free Software Foundation, Inc.
+#   Copyright 1996-2018 Free Software Foundation, Inc.
 #   Taken from GNU libtool, 2001
 #   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
 #
-#   This program is free software: you can redistribute it and/or modify
-#   it under the terms of the GNU General Public License as published by
-#   the Free Software Foundation, either version 3 of the License, or
-#   (at your option) any later version.
-#
-#   This program is distributed in the hope that it will be useful,
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#   GNU General Public License for more details.
-#
-#   You should have received a copy of the GNU General Public License
-#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-#   As a special exception to the GNU General Public License, if you
-#   distribute this file as part of a program that contains a
-#   configuration script generated by Autoconf, you may include it under
-#   the same distribution terms that you use for the rest of that program.
+#   This file is free software; the Free Software Foundation gives
+#   unlimited permission to copy and/or distribute it, with or without
+#   modifications, as long as this notice is preserved.
 #
 # The first argument passed to this file is the canonical host specification,
 #    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
@@ -39,7 +25,7 @@
 #   known workaround is to choose shorter directory names for the build
 #   directory and/or the installation directory.
 
-# All known linkers require a `.a' archive for static linking (except M$VC,
+# All known linkers require a '.a' archive for static linking (except MSVC,
 # which needs '.lib').
 libext=a
 shrext=.so
@@ -49,7 +35,19 @@ host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
 host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 
-# Code taken from libtool.m4's AC_LIBTOOL_PROG_COMPILER_PIC.
+# Code taken from libtool.m4's _LT_CC_BASENAME.
+
+for cc_temp in $CC""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`echo "$cc_temp" | sed -e 's%^.*/%%'`
+
+# Code taken from libtool.m4's _LT_COMPILER_PIC.
 
 wl=
 if test "$GCC" = yes; then
@@ -59,7 +57,7 @@ else
     aix*)
       wl='-Wl,'
       ;;
-    mingw* | pw32* | os2*)
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
       ;;
     hpux9* | hpux10* | hpux11*)
       wl='-Wl,'
@@ -67,40 +65,83 @@ else
     irix5* | irix6* | nonstopux*)
       wl='-Wl,'
       ;;
-    newsos6)
-      ;;
-    linux*)
-      case $CC in
-        icc|ecc)
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+        ecc*)
+          wl='-Wl,'
+          ;;
+        icc* | ifort*)
+          wl='-Wl,'
+          ;;
+        lf95*)
+          wl='-Wl,'
+          ;;
+        nagfor*)
+          wl='-Wl,-Wl,,'
+          ;;
+        pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+          wl='-Wl,'
+          ;;
+        ccc*)
           wl='-Wl,'
           ;;
-        ccc)
+        xl* | bgxl* | bgf* | mpixl*)
           wl='-Wl,'
           ;;
+        como)
+          wl='-lopt='
+          ;;
+        *)
+          case `$CC -V 2>&1 | sed 5q` in
+            *Sun\ F* | *Sun*Fortran*)
+              wl=
+              ;;
+            *Sun\ C*)
+              wl='-Wl,'
+              ;;
+          esac
+          ;;
       esac
       ;;
+    newsos6)
+      ;;
+    *nto* | *qnx*)
+      ;;
     osf3* | osf4* | osf5*)
       wl='-Wl,'
       ;;
-    sco3.2v5*)
+    rdos*)
       ;;
     solaris*)
-      wl='-Wl,'
+      case $cc_basename in
+        f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
+          wl='-Qoption ld '
+          ;;
+        *)
+          wl='-Wl,'
+          ;;
+      esac
       ;;
     sunos4*)
       wl='-Qoption ld '
       ;;
-    sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+    sysv4 | sysv4.2uw2* | sysv4.3*)
       wl='-Wl,'
       ;;
     sysv4*MP*)
       ;;
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      wl='-Wl,'
+      ;;
+    unicos*)
+      wl='-Wl,'
+      ;;
     uts4*)
       ;;
   esac
 fi
 
-# Code taken from libtool.m4's AC_LIBTOOL_PROG_LD_SHLIBS.
+# Code taken from libtool.m4's _LT_LINKER_SHLIBS.
 
 hardcode_libdir_flag_spec=
 hardcode_libdir_separator=
@@ -108,7 +149,7 @@ hardcode_direct=no
 hardcode_minus_L=no
 
 case "$host_os" in
-  cygwin* | mingw* | pw32*)
+  cygwin* | mingw* | pw32* | cegcc*)
     # FIXME: the MSVC++ port hasn't been tested in a loooong time
     # When not using gcc, we currently assume that we are using
     # Microsoft Visual C++.
@@ -116,6 +157,10 @@ case "$host_os" in
       with_gnu_ld=no
     fi
     ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
   openbsd*)
     with_gnu_ld=no
     ;;
@@ -123,32 +168,37 @@ esac
 
 ld_shlibs=yes
 if test "$with_gnu_ld" = yes; then
+  # Set some defaults for GNU ld with shared library support. These
+  # are reset later if shared libraries are not supported. Putting them
+  # here allows them to be overridden if necessary.
+  # Unlike libtool, we use -rpath here, not --rpath, since the documented
+  # option of GNU ld is called -rpath, not --rpath.
+  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
   case "$host_os" in
-    aix3* | aix4* | aix5*)
+    aix[3-9]*)
       # On AIX/PPC, the GNU linker is very broken
       if test "$host_cpu" != ia64; then
         ld_shlibs=no
       fi
       ;;
     amigaos*)
-      hardcode_libdir_flag_spec='-L$libdir'
-      hardcode_minus_L=yes
-      # Samuel A. Falvo II <kc5tja@dolphin.openprojects.net> reports
-      # that the semantics of dynamic libraries on AmigaOS, at least up
-      # to version 4, is to share data among multiple programs linked
-      # with the same dynamic library.  Since this doesn't match the
-      # behavior of shared libraries on other platforms, we can use
-      # them.
-      ld_shlibs=no
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
       ;;
     beos*)
-      if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
         :
       else
         ld_shlibs=no
       fi
       ;;
-    cygwin* | mingw* | pw32*)
+    cygwin* | mingw* | pw32* | cegcc*)
       # hardcode_libdir_flag_spec is actually meaningless, as there is
       # no search path for DLLs.
       hardcode_libdir_flag_spec='-L$libdir'
@@ -158,32 +208,57 @@ if test "$with_gnu_ld" = yes; then
         ld_shlibs=no
       fi
       ;;
+    haiku*)
+      ;;
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      ;;
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
     netbsd*)
       ;;
-    solaris* | sysv5*)
-      if $LD -v 2>&1 | egrep 'BFD 2\.8' > /dev/null; then
+    solaris*)
+      if $LD -v 2>&1 | grep 'BFD 2\.8' > /dev/null; then
         ld_shlibs=no
-      elif $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
+      elif $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
         :
       else
         ld_shlibs=no
       fi
       ;;
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+          ld_shlibs=no
+          ;;
+        *)
+          if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+            hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-rpath,$libdir`'
+          else
+            ld_shlibs=no
+          fi
+          ;;
+      esac
+      ;;
     sunos4*)
       hardcode_direct=yes
       ;;
     *)
-      if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
         :
       else
         ld_shlibs=no
       fi
       ;;
   esac
-  if test "$ld_shlibs" = yes; then
-    # Unlike libtool, we use -rpath here, not --rpath, since the documented
-    # option of GNU ld is called -rpath, not --rpath.
-    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+  if test "$ld_shlibs" = no; then
+    hardcode_libdir_flag_spec=
   fi
 else
   case "$host_os" in
@@ -197,7 +272,7 @@ else
         hardcode_direct=unsupported
       fi
       ;;
-    aix4* | aix5*)
+    aix[4-9]*)
       if test "$host_cpu" = ia64; then
         # On IA64, the linker does run time linking by default, so we don't
         # have to do anything special.
@@ -207,13 +282,14 @@ else
         # Test if we are trying to use run time linking or normal
         # AIX style linking. If -brtl is somewhere in LDFLAGS, we
         # need to do runtime linking.
-        case $host_os in aix4.[23]|aix4.[23].*|aix5*)
+        case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
           for ld_flag in $LDFLAGS; do
             if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
               aix_use_runtimelinking=yes
               break
             fi
           done
+          ;;
         esac
       fi
       hardcode_direct=yes
@@ -225,7 +301,7 @@ else
             strings "$collect2name" | grep resolve_lib_name >/dev/null
           then
             # We have reworked collect2
-            hardcode_direct=yes
+            :
           else
             # We have old collect2
             hardcode_direct=unsupported
@@ -233,6 +309,7 @@ else
             hardcode_libdir_flag_spec='-L$libdir'
             hardcode_libdir_separator=
           fi
+          ;;
         esac
       fi
       # Begin _LT_AC_SYS_LIBPATH_AIX.
@@ -260,14 +337,18 @@ else
       fi
       ;;
     amigaos*)
-      hardcode_libdir_flag_spec='-L$libdir'
-      hardcode_minus_L=yes
-      # see comment about different semantics on the GNU ld section
-      ld_shlibs=no
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
       ;;
-    bsdi4*)
+    bsdi[45]*)
       ;;
-    cygwin* | mingw* | pw32*)
+    cygwin* | mingw* | pw32* | cegcc*)
       # When not using gcc, we currently assume that we are using
       # Microsoft Visual C++.
       # hardcode_libdir_flag_spec is actually meaningless, as there is
@@ -276,25 +357,21 @@ else
       libext=lib
       ;;
     darwin* | rhapsody*)
-      if $CC -v 2>&1 | grep 'Apple' >/dev/null ; then
-        hardcode_direct=no
+      hardcode_direct=no
+      if { case $cc_basename in ifort*) true;; *) test "$GCC" = yes;; esac; }; then
+        :
+      else
+        ld_shlibs=no
       fi
       ;;
     dgux*)
       hardcode_libdir_flag_spec='-L$libdir'
       ;;
-    freebsd1*)
-      ld_shlibs=no
-      ;;
-    freebsd2.2*)
-      hardcode_libdir_flag_spec='-R$libdir'
-      hardcode_direct=yes
-      ;;
-    freebsd2*)
+    freebsd2.[01]*)
       hardcode_direct=yes
       hardcode_minus_L=yes
       ;;
-    freebsd*)
+    freebsd* | dragonfly*)
       hardcode_libdir_flag_spec='-R$libdir'
       hardcode_direct=yes
       ;;
@@ -306,24 +383,25 @@ else
       # but as the default location of the library.
       hardcode_minus_L=yes
       ;;
-    hpux10* | hpux11*)
+    hpux10*)
       if test "$with_gnu_ld" = no; then
-        case "$host_cpu" in
-          hppa*64*)
-            hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
-            hardcode_libdir_separator=:
-            hardcode_direct=no
-            ;;
-          ia64*)
-            hardcode_libdir_flag_spec='-L$libdir'
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        hardcode_direct=yes
+        # hardcode_minus_L: Not really in the search PATH,
+        # but as the default location of the library.
+        hardcode_minus_L=yes
+      fi
+      ;;
+    hpux11*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        case $host_cpu in
+          hppa*64*|ia64*)
             hardcode_direct=no
-            # hardcode_minus_L: Not really in the search PATH,
-            # but as the default location of the library.
-            hardcode_minus_L=yes
             ;;
           *)
-            hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
-            hardcode_libdir_separator=:
             hardcode_direct=yes
             # hardcode_minus_L: Not really in the search PATH,
             # but as the default location of the library.
@@ -345,19 +423,25 @@ else
       hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
       hardcode_libdir_separator=:
       ;;
+    *nto* | *qnx*)
+      ;;
     openbsd*)
-      hardcode_direct=yes
-      if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
-        hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      if test -f /usr/libexec/ld.so; then
+        hardcode_direct=yes
+        if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+          hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+        else
+          case "$host_os" in
+            openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+              hardcode_libdir_flag_spec='-R$libdir'
+              ;;
+            *)
+              hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+              ;;
+          esac
+        fi
       else
-        case "$host_os" in
-          openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
-            hardcode_libdir_flag_spec='-R$libdir'
-            ;;
-          *)
-            hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
-            ;;
-        esac
+        ld_shlibs=no
       fi
       ;;
     os2*)
@@ -377,8 +461,6 @@ else
       fi
       hardcode_libdir_separator=:
       ;;
-    sco3.2v5*)
-      ;;
     solaris*)
       hardcode_libdir_flag_spec='-R$libdir'
       ;;
@@ -407,14 +489,11 @@ else
         ld_shlibs=yes
       fi
       ;;
-    sysv4.2uw2*)
-      hardcode_direct=yes
-      hardcode_minus_L=no
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
       ;;
-    sysv5OpenUNIX8* | sysv5UnixWare7* |  sysv5uw[78]* | unixware7*)
-      ;;
-    sysv5*)
-      hardcode_libdir_flag_spec=
+    sysv5* | sco3.2v5* | sco5v6*)
+      hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-R,$libdir`'
+      hardcode_libdir_separator=':'
       ;;
     uts4*)
       hardcode_libdir_flag_spec='-L$libdir'
@@ -426,35 +505,59 @@ else
 fi
 
 # Check dynamic linker characteristics
-# Code taken from libtool.m4's AC_LIBTOOL_SYS_DYNAMIC_LINKER.
+# Code taken from libtool.m4's _LT_SYS_DYNAMIC_LINKER.
+# Unlike libtool.m4, here we don't care about _all_ names of the library, but
+# only about the one the linker finds when passed -lNAME. This is the last
+# element of library_names_spec in libtool.m4, or possibly two of them if the
+# linker has special search rules.
+library_names_spec=      # the last element of library_names_spec in libtool.m4
 libname_spec='lib$name'
 case "$host_os" in
   aix3*)
+    library_names_spec='$libname.a'
     ;;
-  aix4* | aix5*)
+  aix[4-9]*)
+    library_names_spec='$libname$shrext'
     ;;
   amigaos*)
+    case "$host_cpu" in
+      powerpc*)
+        library_names_spec='$libname$shrext' ;;
+      m68k)
+        library_names_spec='$libname.a' ;;
+    esac
     ;;
   beos*)
+    library_names_spec='$libname$shrext'
     ;;
-  bsdi4*)
+  bsdi[45]*)
+    library_names_spec='$libname$shrext'
     ;;
-  cygwin* | mingw* | pw32*)
+  cygwin* | mingw* | pw32* | cegcc*)
     shrext=.dll
+    library_names_spec='$libname.dll.a $libname.lib'
     ;;
   darwin* | rhapsody*)
     shrext=.dylib
+    library_names_spec='$libname$shrext'
     ;;
   dgux*)
+    library_names_spec='$libname$shrext'
     ;;
-  freebsd1*)
+  freebsd[23].*)
+    library_names_spec='$libname$shrext$versuffix'
     ;;
-  freebsd*)
+  freebsd* | dragonfly*)
+    library_names_spec='$libname$shrext'
     ;;
   gnu*)
+    library_names_spec='$libname$shrext'
+    ;;
+  haiku*)
+    library_names_spec='$libname$shrext'
     ;;
   hpux9* | hpux10* | hpux11*)
-    case "$host_cpu" in
+    case $host_cpu in
       ia64*)
         shrext=.so
         ;;
@@ -465,8 +568,13 @@ case "$host_os" in
         shrext=.sl
         ;;
     esac
+    library_names_spec='$libname$shrext'
+    ;;
+  interix[3-9]*)
+    library_names_spec='$libname$shrext'
     ;;
   irix5* | irix6* | nonstopux*)
+    library_names_spec='$libname$shrext'
     case "$host_os" in
       irix5* | nonstopux*)
         libsuff= shlibsuff=
@@ -483,42 +591,65 @@ case "$host_os" in
     ;;
   linux*oldld* | linux*aout* | linux*coff*)
     ;;
-  linux*)
+  linux* | k*bsd*-gnu | kopensolaris*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  knetbsd*-gnu)
+    library_names_spec='$libname$shrext'
     ;;
   netbsd*)
+    library_names_spec='$libname$shrext'
     ;;
   newsos6)
+    library_names_spec='$libname$shrext'
     ;;
-  nto-qnx)
+  *nto* | *qnx*)
+    library_names_spec='$libname$shrext'
     ;;
   openbsd*)
+    library_names_spec='$libname$shrext$versuffix'
     ;;
   os2*)
     libname_spec='$name'
     shrext=.dll
+    library_names_spec='$libname.a'
     ;;
   osf3* | osf4* | osf5*)
+    library_names_spec='$libname$shrext'
     ;;
-  sco3.2v5*)
+  rdos*)
     ;;
   solaris*)
+    library_names_spec='$libname$shrext'
     ;;
   sunos4*)
+    library_names_spec='$libname$shrext$versuffix'
     ;;
-  sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+  sysv4 | sysv4.3*)
+    library_names_spec='$libname$shrext'
     ;;
   sysv4*MP*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+    library_names_spec='$libname$shrext'
+    ;;
+  tpf*)
+    library_names_spec='$libname$shrext'
     ;;
   uts4*)
+    library_names_spec='$libname$shrext'
     ;;
 esac
 
 sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
 escaped_wl=`echo "X$wl" | sed -e 's/^X//' -e "$sed_quote_subst"`
 shlibext=`echo "$shrext" | sed -e 's,^\.,,'`
+escaped_libname_spec=`echo "X$libname_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_library_names_spec=`echo "X$library_names_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
 escaped_hardcode_libdir_flag_spec=`echo "X$hardcode_libdir_flag_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
 
-sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
+LC_ALL=C sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
 
 # How to pass a linker flag through the compiler.
 wl="$escaped_wl"
@@ -529,6 +660,12 @@ libext="$libext"
 # Shared library suffix (normally "so").
 shlibext="$shlibext"
 
+# Format of library name prefix.
+libname_spec="$escaped_libname_spec"
+
+# Library names that the linker finds when passed -lNAME.
+library_names_spec="$escaped_library_names_spec"
+
 # Flag to hardcode \$libdir into a binary during linking.
 # This must work even if \$libdir does not exist.
 hardcode_libdir_flag_spec="$escaped_hardcode_libdir_flag_spec"
diff --git a/readline/support/shlib-install b/readline/support/shlib-install
index cfec3bd..f4eea27 100755
--- a/readline/support/shlib-install
+++ b/readline/support/shlib-install
@@ -73,7 +73,7 @@ fi
 case "$host_os" in
 hpux*|darwin*|macosx*|linux*|solaris2*)
 	if [ -z "$uninstall" ]; then
-		chmod 555 ${INSTALLDIR}/${LIBNAME}
+		chmod 755 ${INSTALLDIR}/${LIBNAME}
 	fi ;;
 cygwin*|mingw*)
 	IMPLIBNAME=`echo ${LIBNAME} \
diff --git a/readline/support/shobj-conf b/readline/support/shobj-conf
index 1f64433..7920f1b 100755
--- a/readline/support/shobj-conf
+++ b/readline/support/shobj-conf
@@ -189,7 +189,7 @@ darwin*)
 	darwin[1-7].*)
 		SHOBJ_STATUS=unsupported
 		SHOBJ_LDFLAGS='-dynamic'
-		SHLIB_XLDFLAGS='-arch_only `/usr/bin/arch` -install_name $(libdir)/`echo $@ | sed "s:\\..*::"`.$(SHLIB_MAJOR).$(SHLIB_LIBSUFF) -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR) -v'
+		SHLIB_XLDFLAGS='-arch_only `/usr/bin/arch` -install_name $(libdir)/`echo $@ | sed "s:\\..*::"`.$(SHLIB_MAJOR).$(SHLIB_LIBSUFF) -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -v'
 		;;
 	# Darwin 8 == Mac OS X 10.4; Mac OS X 10.N == Darwin N+4
 	*)
@@ -205,7 +205,7 @@ darwin*)
 			;;
 		 esac
 		 SHOBJ_LDFLAGS="-dynamiclib -dynamic -undefined dynamic_lookup ${SHOBJ_ARCHFLAGS}"
-		 SHLIB_XLDFLAGS="-dynamiclib ${SHOBJ_ARCHFLAGS}"' -install_name $(libdir)/`echo $@ | sed "s:\\..*::"`.$(SHLIB_MAJOR).$(SHLIB_LIBSUFF) -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR) -v'
+		 SHLIB_XLDFLAGS="-dynamiclib ${SHOBJ_ARCHFLAGS}"' -install_name $(libdir)/`echo $@ | sed "s:\\..*::"`.$(SHLIB_MAJOR).$(SHLIB_LIBSUFF) -current_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -compatibility_version $(SHLIB_MAJOR)$(SHLIB_MINOR) -v'
 		;;
 	esac