diff --git a/ANNOUNCEMENT b/ANNOUNCEMENT
index 374adbd77..a61e0ef0c 100644
--- a/ANNOUNCEMENT
+++ b/ANNOUNCEMENT
@@ -35,8 +35,23 @@ Known issues
   quicklisp and have a C compiler accessible to ECL, you may use
   (ext:install-c-compiler) to switch back to the Lisp-to-C compiler.
 
-Changes since 13.5.1
-====================
+15.3.7 changes since 15.2.21
+============================
+
+* autoconf scripts are rewritten to support version 2.69 stack
+
+* direction is now correctly determined, so gcc 5.x builds should be
+
+* broken --with-sse=yes configure flag works once again
+
+* compilation of ECL under MSVC (2008/2010/2012) even with custom
+  code pages
+
+* stable-sort now works as desired
+
+
+15.2.21 changes since 13.5.1
+============================
 
 * Features coverity scan model, ffi-unload-module implementation,
   probably more.
diff --git a/msvc/Makefile b/msvc/Makefile
index 4a639c65f..ed4d47a7a 100755
--- a/msvc/Makefile
+++ b/msvc/Makefile
@@ -10,8 +10,8 @@ srcdir	= ..\src
 
 SHORT_SITE_NAME   =
 LONG_SITE_NAME    =
-ECL_VERSION       = 15.2.21
-ECL_VERSION_NUMBER= 150221
+ECL_VERSION       = 15.3.7
+ECL_VERSION_NUMBER= 150307
 ARCHITECTURE      = PENTIUM4
 SOFTWARE_TYPE     = NT
 SOFTWARE_VERSION  = 5.0
diff --git a/src/c/symbols_list2.h b/src/c/symbols_list2.h
index 70fdd1ae6..5d989ae31 100644
--- a/src/c/symbols_list2.h
+++ b/src/c/symbols_list2.h
@@ -1890,7 +1890,7 @@ cl_symbols[] = {
 {KEY_ "UCS-4LE",NULL},
 
 {EXT_ "LOAD-ENCODING",NULL},
-{EXT_ "MAKE-ENCODING","si_make_encoding"},
+{EXT_ "MAKE-ENCODING",NULL},
 {EXT_ "ALL-ENCODINGS","ECL_NAME(si_load_encoding)"},
 
 {KEY_ "US-ASCII",NULL},
diff --git a/src/configure b/src/configure
index ac9665791..8bf77b85c 100755
--- a/src/configure
+++ b/src/configure
@@ -1,7 +1,7 @@
 #! /bin/sh
 # From configure.ac Revision.
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for ecl 15.2.21.
+# Generated by GNU Autoconf 2.69 for ecl 15.3.7.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -578,8 +578,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='ecl'
 PACKAGE_TARNAME='ecl'
-PACKAGE_VERSION='15.2.21'
-PACKAGE_STRING='ecl 15.2.21'
+PACKAGE_VERSION='15.3.7'
+PACKAGE_STRING='ecl 15.3.7'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
@@ -1365,7 +1365,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures ecl 15.2.21 to adapt to many kinds of systems.
+\`configure' configures ecl 15.3.7 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1434,7 +1434,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of ecl 15.2.21:";;
+     short | recursive ) echo "Configuration of ecl 15.3.7:";;
    esac
   cat <<\_ACEOF
 
@@ -1611,7 +1611,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-ecl configure 15.2.21
+ecl configure 15.3.7
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2198,7 +2198,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by ecl $as_me 15.2.21, which was
+It was created by ecl $as_me 15.3.7, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -10062,7 +10062,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by ecl $as_me 15.2.21, which was
+This file was extended by ecl $as_me 15.3.7, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -10124,7 +10124,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-ecl config.status 15.2.21
+ecl config.status 15.3.7
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/src/configure.ac b/src/configure.ac
index 9495725d5..bc8d84ba7 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -8,7 +8,7 @@ dnl  AUTOCONF configuration for ECL
 dnl  Giuseppe Attardi 25.1.1994
 dnl
 
-AC_INIT([ecl],[15.2.21],[])
+AC_INIT([ecl],[15.3.7],[])
 AC_REVISION([$Revision$])
 AC_CONFIG_SRCDIR([bare.lsp.in])
 AC_CONFIG_AUX_DIR([gmp])