diff --git a/configure b/configure
index 7342d7ad..ba94d3bd 100755
--- a/configure
+++ b/configure
@@ -658,7 +658,9 @@ CXXFLAGS
 CXX
 DROPBEAR_PLUGIN
 CRYPTLIB
-INSTALL
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
 STRIP
 RANLIB
 AR
@@ -2807,7 +2809,7 @@ as_fn_append ac_header_c_list " sys/select.h sys_select_h HAVE_SYS_SELECT_H"
 as_fn_append ac_header_c_list " sys/socket.h sys_socket_h HAVE_SYS_SOCKET_H"
 
 # Auxiliary files required by this configure script.
-ac_aux_files="config.guess config.sub"
+ac_aux_files="install-sh config.guess config.sub"
 
 # Locations in which to look for auxiliary files.
 ac_aux_dir_candidates="${srcdir}/src"
@@ -5116,19 +5118,29 @@ else
   STRIP="$ac_cv_prog_STRIP"
 fi
 
-if test -n "$ac_tool_prefix"; then
-  # Extract the first word of "${ac_tool_prefix}install", so it can be a program name with args.
-set dummy ${ac_tool_prefix}install; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-printf %s "checking for $ac_word... " >&6; }
-if test ${ac_cv_prog_INSTALL+y}
+
+  # Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+printf %s "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test ${ac_cv_path_install+y}
 then :
   printf %s "(cached) " >&6
 else $as_nop
-  if test -n "$INSTALL"; then
-  ac_cv_prog_INSTALL="$INSTALL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
 do
   IFS=$as_save_IFS
@@ -5137,86 +5149,73 @@ do
     */) ;;
     *) as_dir=$as_dir/ ;;
   esac
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
-    ac_cv_prog_INSTALL="${ac_tool_prefix}install"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
+    # Account for fact that we put trailing slashes in our PATH walk.
+case $as_dir in #((
+  ./ | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /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_exec_ext in '' $ac_executable_extensions; do
+	if as_fn_executable_p "$as_dir$ac_prog$ac_exec_ext"; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir/" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
   done
 IFS=$as_save_IFS
 
+rm -rf conftest.one conftest.two conftest.dir
+
 fi
+  if test ${ac_cv_path_install+y}; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
 fi
-INSTALL=$ac_cv_prog_INSTALL
-if test -n "$INSTALL"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
 printf "%s\n" "$INSTALL" >&6; }
-else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-fi
 
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
 
-fi
-if test -z "$ac_cv_prog_INSTALL"; then
-  ac_ct_INSTALL=$INSTALL
-  # Extract the first word of "install", so it can be a program name with args.
-set dummy install; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-printf %s "checking for $ac_word... " >&6; }
-if test ${ac_cv_prog_ac_ct_INSTALL+y}
-then :
-  printf %s "(cached) " >&6
-else $as_nop
-  if test -n "$ac_ct_INSTALL"; then
-  ac_cv_prog_ac_ct_INSTALL="$ac_ct_INSTALL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  case $as_dir in #(((
-    '') as_dir=./ ;;
-    */) ;;
-    *) as_dir=$as_dir/ ;;
-  esac
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
-    ac_cv_prog_ac_ct_INSTALL="install"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_INSTALL=$ac_cv_prog_ac_ct_INSTALL
-if test -n "$ac_ct_INSTALL"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_INSTALL" >&5
-printf "%s\n" "$ac_ct_INSTALL" >&6; }
-else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-fi
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
 
-  if test "x$ac_ct_INSTALL" = x; then
-    INSTALL=":"
-  else
-    case $cross_compiling:$ac_tool_warned in
-yes:)
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
-    INSTALL=$ac_ct_INSTALL
-  fi
-else
-  INSTALL="$ac_cv_prog_INSTALL"
-fi
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 
 
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC options needed to detect all undeclared functions" >&5
@@ -9275,6 +9274,7 @@ gives unlimited permission to copy, distribute and modify it."
 
 ac_pwd='$ac_pwd'
 srcdir='$srcdir'
+INSTALL='$INSTALL'
 test -n "\$AWK" || AWK=awk
 _ACEOF
 
@@ -9833,6 +9833,10 @@ ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
   # CONFIG_FILE
   #
 
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
 _ACEOF
 
 cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
@@ -9886,6 +9890,7 @@ s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
 s&@builddir@&$ac_builddir&;t t
 s&@abs_builddir@&$ac_abs_builddir&;t t
 s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
 $ac_datarootdir_hack
 "
 eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
diff --git a/configure.ac b/configure.ac
index 405113c0..7a69a653 100644
--- a/configure.ac
+++ b/configure.ac
@@ -200,7 +200,7 @@ esac
 AC_CHECK_TOOL(AR, ar, :)
 AC_CHECK_TOOL(RANLIB, ranlib, :)
 AC_CHECK_TOOL(STRIP, strip, :)
-AC_CHECK_TOOL(INSTALL, install, :)
+AC_PROG_INSTALL
 
 dnl Can't use login() or logout() with uclibc
 AC_CHECK_DECL(__UCLIBC__,