diff --git a/.cvsignore b/.cvsignore
index e38a50b..397691f 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -23,3 +23,5 @@
 buildpkg.sh
 autom4te.cache
 ssh-rand-helper
+survey.sh
+survey
diff --git a/ChangeLog b/ChangeLog
index 797ff28..2cead3c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+20040118
+ - (dtucker) [INSTALL Makefile.in configure.ac survey.sh.in] Implement
+   "make survey" and "make send-survey".  This will provide data on the
+   configure parameters, platform and platform features to the development
+   team, which will allow (among other things) better targetting of testing.
+   It's entirely voluntary and is off be default. ok djm@
+
 20041220
  - (dtucker) [ssh-rand-helper.c] Fall back to command-based seeding if reading
    from prngd is enabled at compile time but fails at run time, eg because
@@ -1960,4 +1967,4 @@
    - (djm) Trim deprecated options from INSTALL. Mention UsePAM
    - (djm) Fix quote handling in sftp; Patch from admorten AT umich.edu
 
-$Id: ChangeLog,v 1.3606 2004/12/20 01:35:42 dtucker Exp $
+$Id: ChangeLog,v 1.3607 2005/01/18 01:05:18 dtucker Exp $
diff --git a/INSTALL b/INSTALL
index 26d6297..4fc3744 100644
--- a/INSTALL
+++ b/INSTALL
@@ -200,7 +200,20 @@
 For more information on configuration, please refer to the manual pages
 for sshd, ssh and ssh-agent.
 
-4. Problems?
+4. (Optional) Send survey
+-------------------------
+
+$ make survey
+[check the contents and make sure there's no sensitive information]
+$ make send-survey
+
+This will send configuration information for the currently configured
+host to a survey address.  This will help determine which configurations
+are actually in use, and what valid combinations of configure options
+exist.  The raw data is available only to the OpenSSH developers, however
+summary data may be published.
+
+5. Problems?
 ------------
 
 If you experience problems compiling, installing or running OpenSSH.
@@ -208,4 +221,4 @@
 http://www.openssh.com/
 
 
-$Id: INSTALL,v 1.65 2004/11/07 09:14:34 dtucker Exp $
+$Id: INSTALL,v 1.66 2005/01/18 01:05:18 dtucker Exp $
diff --git a/Makefile.in b/Makefile.in
index 940e686..8a1c9f7 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,4 +1,4 @@
-# $Id: Makefile.in,v 1.266 2004/11/07 09:14:34 dtucker Exp $
+# $Id: Makefile.in,v 1.267 2005/01/18 01:05:18 dtucker Exp $
 
 # uncomment if you run a non bourne compatable shell. Ie. csh
 #SHELL = @SH@
@@ -195,13 +195,13 @@
 
 clean:	regressclean
 	rm -f *.o *.a $(TARGETS) logintest config.cache config.log
-	rm -f *.out core
+	rm -f *.out core survey
 	(cd openbsd-compat && $(MAKE) clean)
 
 distclean:	regressclean
 	rm -f *.o *.a $(TARGETS) logintest config.cache config.log
 	rm -f *.out core opensshd.init
-	rm -f Makefile buildpkg.sh config.h config.status ssh_prng_cmds *~
+	rm -f Makefile buildpkg.sh config.h config.status ssh_prng_cmds survey.sh *~
 	rm -rf autom4te.cache
 	(cd openbsd-compat && $(MAKE) distclean)
 	(cd scard && $(MAKE) distclean)
@@ -411,6 +411,15 @@
 		(cd regress && $(MAKE) clean) \
 	fi
 
+survey: survey.sh ssh
+	@$(SHELL) ./survey.sh > survey
+	@echo 'The survey results have been placed in the file "survey" in the'
+	@echo 'current directory.  Please review the file then send with'
+	@echo '"make send-survey".'
+
+send-survey:	survey
+	mail portable-survey@mindrot.org <survey
+
 package: $(CONFIGFILES) ssh_prng_cmds.out $(MANPAGES) $(TARGETS)
 	if [ "@MAKE_PACKAGE_SUPPORTED@" = yes ]; then \
 		sh buildpkg.sh; \
diff --git a/configure.ac b/configure.ac
index 4b40b76..d4151fe 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-# $Id: configure.ac,v 1.234 2004/12/09 02:29:59 tim Exp $
+# $Id: configure.ac,v 1.235 2005/01/18 01:05:18 dtucker Exp $
 #
 # Copyright (c) 1999-2004 Damien Miller
 #
@@ -3020,7 +3020,8 @@
 fi
 
 AC_EXEEXT
-AC_CONFIG_FILES([Makefile buildpkg.sh opensshd.init openbsd-compat/Makefile scard/Makefile ssh_prng_cmds])
+AC_CONFIG_FILES([Makefile buildpkg.sh opensshd.init openbsd-compat/Makefile \
+	scard/Makefile ssh_prng_cmds survey.sh])
 AC_OUTPUT
 
 # Print summary of options
diff --git a/survey.sh.in b/survey.sh.in
new file mode 100644
index 0000000..6a0c08d
--- /dev/null
+++ b/survey.sh.in
@@ -0,0 +1,67 @@
+#!/bin/sh
+#
+# Copyright (c) 2004, 2005 Darren Tucker
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+host="@host@"
+AWK="@AWK@"
+CC="@CC@"
+CPP="@CPP@"
+CFLAGS="@CFLAGS@"
+CPPFLAGS="@CPPFLAGS@"
+LDFLAGS="@LDFLAGS@"
+LIBS="@LIBS@"
+
+# Note format:
+# identifier: [data] CRCR
+
+echo "openssh-survey-version: 1"
+echo
+echo "openssh-version: `./ssh -V 2>&1`"
+echo
+configinv=`$AWK '/^  \\\$.*configure/' config.log | sed 's/^  \\\$ //g'`
+echo "configure-invocation: $configinv"
+echo
+echo "host: $host"
+echo
+echo "uname: `uname`"
+echo
+echo "uname-r: `uname -r`"
+echo
+echo "uname-m: `uname -m`"
+echo
+echo "uname-p: `uname -p`"
+echo
+echo "oslevel: `oslevel 2>/dev/null`"
+echo
+echo "cc: $CC"
+echo
+echo "cflags: $CFLAGS"
+echo
+echo "cppflags: $CPPFLAGS"
+echo
+echo "ldflags: $LDFLAGS"
+echo
+echo "libs: $LIBS"
+echo
+echo "ccver-v: `$CC -v 2>&1`"
+echo
+echo "ccver-V: `$CC -V 2>&1`"
+echo
+echo "cppdefines:"
+${CPP} -dM - </dev/null
+echo
+echo "config.h:"
+egrep '#define|#undef' config.h
+echo