diff --git a/config/install-sh b/config/install-sh
index fdca6338c2..377bb8687f 100755
--- a/config/install-sh
+++ b/config/install-sh
@@ -1,9 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-# config/install-sh
-
-scriptversion=2009-08-26.20
+scriptversion=2011-11-20.07; # UTC
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -37,7 +35,7 @@ scriptversion=2009-08-26.20
 # FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
-# `make' implicit rules from creating a file called install from it
+# 'make' implicit rules from creating a file called install from it
 # when there is no Makefile.
 #
 # This script is compatible with the BSD install script, but was written
@@ -69,12 +67,6 @@ mkdirprog=${MKDIRPROG-mkdir}
 mvprog=${MVPROG-mv}
 rmprog=${RMPROG-rm}
 stripprog=${STRIPPROG-strip}
-# Darwin normal strip removes symbols from shared libraries that are
-# later needed for dynamic linking, so use strip -x.
-# http://archives.postgresql.org/pgsql-hackers/2007-10/msg01470.php
-case `uname -s` in
-  Darwin) stripprog="${STRIPPROG-strip -x}";;
-esac
 
 posix_glob='?'
 initialize_posix_glob='
@@ -164,6 +156,10 @@ while test $# -ne 0; do
     -s) stripcmd=$stripprog;;
 
     -t) dst_arg=$2
+	# Protect names problematic for 'test' and other utilities.
+	case $dst_arg in
+	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
+	esac
 	shift;;
 
     -T) no_target_directory=true;;
@@ -194,6 +190,10 @@ if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
     fi
     shift # arg
     dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
   done
 fi
 
@@ -202,13 +202,17 @@ if test $# -eq 0; then
     echo "$0: no input file specified." >&2
     exit 1
   fi
-  # It's OK to call `install-sh -d' without argument.
+  # It's OK to call 'install-sh -d' without argument.
   # This can happen when creating conditional directories.
   exit 0
 fi
 
 if test -z "$dir_arg"; then
-  trap '(exit $?); exit' 1 2 13 15
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
 
   # Set umask so as not to create temps with too-generous modes.
   # However, 'strip' requires both read and write access to temps.
@@ -236,9 +240,9 @@ fi
 
 for src
 do
-  # Protect names starting with `-'.
+  # Protect names problematic for 'test' and other utilities.
   case $src in
-    -*) src=./$src;;
+    -* | [=\(\)!]) src=./$src;;
   esac
 
   if test -n "$dir_arg"; then
@@ -260,12 +264,7 @@ do
       echo "$0: no destination specified." >&2
       exit 1
     fi
-
     dst=$dst_arg
-    # Protect names starting with `-'.
-    case $dst in
-      -*) dst=./$dst;;
-    esac
 
     # If destination is a directory, append the input filename; won't work
     # if double slashes aren't ignored.
@@ -355,7 +354,7 @@ do
 	      if test -z "$dir_arg" || {
 		   # Check for POSIX incompatibilities with -m.
 		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-		   # other-writeable bit of parent directory when it shouldn't.
+		   # other-writable bit of parent directory when it shouldn't.
 		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
 		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
 		   case $ls_ld_tmpdir in
@@ -393,7 +392,7 @@ do
 
       case $dstdir in
 	/*) prefix='/';;
-	-*) prefix='./';;
+	[-=\(\)!]*) prefix='./';;
 	*)  prefix='';;
       esac
 
@@ -411,7 +410,7 @@ do
 
       for d
       do
-	test -z "$d" && continue
+	test X"$d" = X && continue
 
 	prefix=$prefix$d
 	if test -d "$prefix"; then
@@ -523,5 +522,6 @@ done
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
 # End:
diff --git a/config/programs.m4 b/config/programs.m4
index 565195d06d..c70a0c2f7b 100644
--- a/config/programs.m4
+++ b/config/programs.m4
@@ -218,9 +218,19 @@ AC_DEFUN([PGAC_CHECK_STRIP],
     STRIP_SHARED_LIB="$STRIP --strip-unneeded"
     AC_MSG_RESULT(yes)
   else
-    STRIP_STATIC_LIB=:
-    STRIP_SHARED_LIB=:
-    AC_MSG_RESULT(no)
+    case $host_os in
+      darwin*)
+        STRIP="$STRIP -x"
+        STRIP_STATIC_LIB=$STRIP
+        STRIP_SHARED_LIB=$STRIP
+        AC_MSG_RESULT(yes)
+        ;;
+      *)
+        STRIP_STATIC_LIB=:
+        STRIP_SHARED_LIB=:
+        AC_MSG_RESULT(no)
+        ;;
+    esac
   fi
   AC_SUBST(STRIP_STATIC_LIB)
   AC_SUBST(STRIP_SHARED_LIB)
diff --git a/configure b/configure
index 5449d02c9b..5fd7651812 100755
--- a/configure
+++ b/configure
@@ -6480,10 +6480,21 @@ $as_echo_n "checking whether it is possible to strip libraries... " >&6; }
     { $as_echo "$as_me:$LINENO: result: yes" >&5
 $as_echo "yes" >&6; }
   else
-    STRIP_STATIC_LIB=:
-    STRIP_SHARED_LIB=:
-    { $as_echo "$as_me:$LINENO: result: no" >&5
+    case $host_os in
+      darwin*)
+        STRIP="$STRIP -x"
+        STRIP_STATIC_LIB=$STRIP
+        STRIP_SHARED_LIB=$STRIP
+        { $as_echo "$as_me:$LINENO: result: yes" >&5
+$as_echo "yes" >&6; }
+        ;;
+      *)
+        STRIP_STATIC_LIB=:
+        STRIP_SHARED_LIB=:
+        { $as_echo "$as_me:$LINENO: result: no" >&5
 $as_echo "no" >&6; }
+        ;;
+    esac
   fi