diff --git a/ChangeLog b/ChangeLog
index 3874db71..1076d6ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2008-10-08  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
+
+	Added missing m4 macros.
+	* m4/cppunit.m4
+	* m4/libgcrypt.m4
+	* m4/libgnutls-extra.m4
+	* m4/libgnutls.m4
+	* m4/libxml2.m4
+
 2008-10-07  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
 
 	Fixed compile error with gcc-4.4(snapshot)
diff --git a/Makefile.in b/Makefile.in
index 0fa8638d..7399153f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -43,24 +43,26 @@ DIST_COMMON = README $(am__configure_deps) $(dist_doc_DATA) \
 	missing mkinstalldirs
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/aria2_arg.m4 \
-	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/gettext.m4 \
-	$(top_srcdir)/m4/glibc2.m4 $(top_srcdir)/m4/glibc21.m4 \
-	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intdiv0.m4 \
-	$(top_srcdir)/m4/intl.m4 $(top_srcdir)/m4/intlmacosx.m4 \
-	$(top_srcdir)/m4/intmax.m4 $(top_srcdir)/m4/inttypes-pri.m4 \
+	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/cppunit.m4 \
+	$(top_srcdir)/m4/gettext.m4 $(top_srcdir)/m4/glibc2.m4 \
+	$(top_srcdir)/m4/glibc21.m4 $(top_srcdir)/m4/iconv.m4 \
+	$(top_srcdir)/m4/intdiv0.m4 $(top_srcdir)/m4/intl.m4 \
+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/intmax.m4 \
+	$(top_srcdir)/m4/inttypes-pri.m4 \
 	$(top_srcdir)/m4/inttypes_h.m4 $(top_srcdir)/m4/lcmessage.m4 \
 	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
 	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/libares.m4 \
 	$(top_srcdir)/m4/libcares.m4 $(top_srcdir)/m4/libexpat.m4 \
-	$(top_srcdir)/m4/libz.m4 $(top_srcdir)/m4/lock.m4 \
-	$(top_srcdir)/m4/longlong.m4 $(top_srcdir)/m4/nls.m4 \
-	$(top_srcdir)/m4/openssl.m4 $(top_srcdir)/m4/po.m4 \
-	$(top_srcdir)/m4/printf-posix.m4 $(top_srcdir)/m4/progtest.m4 \
-	$(top_srcdir)/m4/size_max.m4 $(top_srcdir)/m4/sqlite3.m4 \
-	$(top_srcdir)/m4/stdint_h.m4 $(top_srcdir)/m4/uintmax_t.m4 \
-	$(top_srcdir)/m4/visibility.m4 $(top_srcdir)/m4/wchar_t.m4 \
-	$(top_srcdir)/m4/wint_t.m4 $(top_srcdir)/m4/xsize.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/libgcrypt.m4 $(top_srcdir)/m4/libgnutls.m4 \
+	$(top_srcdir)/m4/libxml2.m4 $(top_srcdir)/m4/libz.m4 \
+	$(top_srcdir)/m4/lock.m4 $(top_srcdir)/m4/longlong.m4 \
+	$(top_srcdir)/m4/nls.m4 $(top_srcdir)/m4/openssl.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/printf-posix.m4 \
+	$(top_srcdir)/m4/progtest.m4 $(top_srcdir)/m4/size_max.m4 \
+	$(top_srcdir)/m4/sqlite3.m4 $(top_srcdir)/m4/stdint_h.m4 \
+	$(top_srcdir)/m4/uintmax_t.m4 $(top_srcdir)/m4/visibility.m4 \
+	$(top_srcdir)/m4/wchar_t.m4 $(top_srcdir)/m4/wint_t.m4 \
+	$(top_srcdir)/m4/xsize.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
diff --git a/aclocal.m4 b/aclocal.m4
index 68d87bd1..38daad18 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -19,558 +19,6 @@ You have another version of autoconf.  It may work, but is not guaranteed to.
 If you have problems, you may need to regenerate the build system entirely.
 To do so, use the procedure documented by the package, typically `autoreconf'.])])
 
-dnl
-dnl AM_PATH_CPPUNIT(MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
-dnl
-AC_DEFUN([AM_PATH_CPPUNIT],
-[
-
-AC_ARG_WITH(cppunit-prefix,[  --with-cppunit-prefix=PFX   Prefix where CppUnit is installed (optional)],
-            cppunit_config_prefix="$withval", cppunit_config_prefix="")
-AC_ARG_WITH(cppunit-exec-prefix,[  --with-cppunit-exec-prefix=PFX  Exec prefix where CppUnit is installed (optional)],
-            cppunit_config_exec_prefix="$withval", cppunit_config_exec_prefix="")
-
-  if test x$cppunit_config_exec_prefix != x ; then
-     cppunit_config_args="$cppunit_config_args --exec-prefix=$cppunit_config_exec_prefix"
-     if test x${CPPUNIT_CONFIG+set} != xset ; then
-        CPPUNIT_CONFIG=$cppunit_config_exec_prefix/bin/cppunit-config
-     fi
-  fi
-  if test x$cppunit_config_prefix != x ; then
-     cppunit_config_args="$cppunit_config_args --prefix=$cppunit_config_prefix"
-     if test x${CPPUNIT_CONFIG+set} != xset ; then
-        CPPUNIT_CONFIG=$cppunit_config_prefix/bin/cppunit-config
-     fi
-  fi
-
-  AC_PATH_PROG(CPPUNIT_CONFIG, cppunit-config, no)
-  cppunit_version_min=$1
-
-  AC_MSG_CHECKING(for Cppunit - version >= $cppunit_version_min)
-  no_cppunit=""
-  if test "$CPPUNIT_CONFIG" = "no" ; then
-    AC_MSG_RESULT(no)
-    no_cppunit=yes
-  else
-    CPPUNIT_CFLAGS=`$CPPUNIT_CONFIG --cflags`
-    CPPUNIT_LIBS=`$CPPUNIT_CONFIG --libs`
-    cppunit_version=`$CPPUNIT_CONFIG --version`
-
-    cppunit_major_version=`echo $cppunit_version | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
-    cppunit_minor_version=`echo $cppunit_version | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
-    cppunit_micro_version=`echo $cppunit_version | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
-
-    cppunit_major_min=`echo $cppunit_version_min | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
-    if test "x${cppunit_major_min}" = "x" ; then
-       cppunit_major_min=0
-    fi
-    
-    cppunit_minor_min=`echo $cppunit_version_min | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
-    if test "x${cppunit_minor_min}" = "x" ; then
-       cppunit_minor_min=0
-    fi
-    
-    cppunit_micro_min=`echo $cppunit_version_min | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
-    if test "x${cppunit_micro_min}" = "x" ; then
-       cppunit_micro_min=0
-    fi
-
-    cppunit_version_proper=`expr \
-        $cppunit_major_version \> $cppunit_major_min \| \
-        $cppunit_major_version \= $cppunit_major_min \& \
-        $cppunit_minor_version \> $cppunit_minor_min \| \
-        $cppunit_major_version \= $cppunit_major_min \& \
-        $cppunit_minor_version \= $cppunit_minor_min \& \
-        $cppunit_micro_version \>= $cppunit_micro_min `
-
-    if test "$cppunit_version_proper" = "1" ; then
-      AC_MSG_RESULT([$cppunit_major_version.$cppunit_minor_version.$cppunit_micro_version])
-    else
-      AC_MSG_RESULT(no)
-      no_cppunit=yes
-    fi
-  fi
-
-  if test "x$no_cppunit" = x ; then
-     ifelse([$2], , :, [$2])     
-  else
-     CPPUNIT_CFLAGS=""
-     CPPUNIT_LIBS=""
-     ifelse([$3], , :, [$3])
-  fi
-
-  AC_SUBST(CPPUNIT_CFLAGS)
-  AC_SUBST(CPPUNIT_LIBS)
-])
-
-
-
-
-dnl Autoconf macros for libgcrypt
-dnl       Copyright (C) 2002, 2004 Free Software Foundation, Inc.
-dnl
-dnl This file is free software; as a special exception the author gives
-dnl unlimited permission to copy and/or distribute it, with or without
-dnl modifications, as long as this notice is preserved.
-dnl
-dnl This file is distributed in the hope that it will be useful, but
-dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
-dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
-
-dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
-dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
-dnl Test for libgcrypt and define LIBGCRYPT_CFLAGS and LIBGCRYPT_LIBS.
-dnl MINIMUN-VERSION is a string with the version number optionalliy prefixed
-dnl with the API version to also check the API compatibility. Example:
-dnl a MINIMUN-VERSION of 1:1.2.5 won't pass the test unless the installed 
-dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1.  Using
-dnl this features allows to prevent build against newer versions of libgcrypt
-dnl with a changed API.
-dnl
-AC_DEFUN([AM_PATH_LIBGCRYPT],
-[ AC_ARG_WITH(libgcrypt-prefix,
-            AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
-                           [prefix where LIBGCRYPT is installed (optional)]),
-     libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
-  if test x$libgcrypt_config_prefix != x ; then
-     if test x${LIBGCRYPT_CONFIG+set} != xset ; then
-        LIBGCRYPT_CONFIG=$libgcrypt_config_prefix/bin/libgcrypt-config
-     fi
-  fi
-
-  AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
-  tmp=ifelse([$1], ,1:1.2.0,$1)
-  if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
-     req_libgcrypt_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`
-     min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
-  else
-     req_libgcrypt_api=0
-     min_libgcrypt_version="$tmp"
-  fi
-
-  AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
-  ok=no
-  if test "$LIBGCRYPT_CONFIG" != "no" ; then
-    req_major=`echo $min_libgcrypt_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
-    req_minor=`echo $min_libgcrypt_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
-    req_micro=`echo $min_libgcrypt_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
-    libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
-    major=`echo $libgcrypt_config_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
-    minor=`echo $libgcrypt_config_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
-    micro=`echo $libgcrypt_config_version | \
-               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
-    if test "$major" -gt "$req_major"; then
-        ok=yes
-    else 
-        if test "$major" -eq "$req_major"; then
-            if test "$minor" -gt "$req_minor"; then
-               ok=yes
-            else
-               if test "$minor" -eq "$req_minor"; then
-                   if test "$micro" -ge "$req_micro"; then
-                     ok=yes
-                   fi
-               fi
-            fi
-        fi
-    fi
-  fi
-  if test $ok = yes; then
-    AC_MSG_RESULT([yes ($libgcrypt_config_version)])
-  else
-    AC_MSG_RESULT(no)
-  fi
-  if test $ok = yes; then
-     # If we have a recent libgcrypt, we should also check that the
-     # API is compatible
-     if test "$req_libgcrypt_api" -gt 0 ; then
-        tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
-        if test "$tmp" -gt 0 ; then
-           AC_MSG_CHECKING([LIBGCRYPT API version])
-           if test "$req_libgcrypt_api" -eq "$tmp" ; then
-             AC_MSG_RESULT([okay])
-           else
-             ok=no
-             AC_MSG_RESULT([does not match. want=$req_libgcrypt_api got=$tmp])
-           fi
-        fi
-     fi
-  fi
-  if test $ok = yes; then
-    LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
-    LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
-    ifelse([$2], , :, [$2])
-  else
-    LIBGCRYPT_CFLAGS=""
-    LIBGCRYPT_LIBS=""
-    ifelse([$3], , :, [$3])
-  fi
-  AC_SUBST(LIBGCRYPT_CFLAGS)
-  AC_SUBST(LIBGCRYPT_LIBS)
-])
-
-dnl Autoconf macros for libgnutls
-dnl $id$
-
-# Modified for LIBGNUTLS -- nmav
-# Configure paths for LIBGCRYPT
-# Shamelessly stolen from the one of XDELTA by Owen Taylor
-# Werner Koch   99-12-09
-
-dnl AM_PATH_LIBGNUTLS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
-dnl Test for libgnutls, and define LIBGNUTLS_CFLAGS and LIBGNUTLS_LIBS
-dnl
-AC_DEFUN([AM_PATH_LIBGNUTLS],
-[dnl
-dnl Get the cflags and libraries from the libgnutls-config script
-dnl
-AC_ARG_WITH(libgnutls-prefix,
-          [  --with-libgnutls-prefix=PFX   Prefix where libgnutls is installed (optional)],
-          libgnutls_config_prefix="$withval", libgnutls_config_prefix="")
-
-  if test x$libgnutls_config_prefix != x ; then
-     if test x${LIBGNUTLS_CONFIG+set} != xset ; then
-        LIBGNUTLS_CONFIG=$libgnutls_config_prefix/bin/libgnutls-config
-     fi
-  fi
-
-  AC_PATH_PROG(LIBGNUTLS_CONFIG, libgnutls-config, no)
-  min_libgnutls_version=ifelse([$1], ,0.1.0,$1)
-  AC_MSG_CHECKING(for libgnutls - version >= $min_libgnutls_version)
-  no_libgnutls=""
-  if test "$LIBGNUTLS_CONFIG" = "no" ; then
-    no_libgnutls=yes
-  else
-    LIBGNUTLS_CFLAGS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --cflags`
-    LIBGNUTLS_LIBS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --libs`
-    libgnutls_config_version=`$LIBGNUTLS_CONFIG $libgnutls_config_args --version`
-
-
-      ac_save_CFLAGS="$CFLAGS"
-      ac_save_LIBS="$LIBS"
-      CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
-      LIBS="$LIBS $LIBGNUTLS_LIBS"
-dnl
-dnl Now check if the installed libgnutls is sufficiently new. Also sanity
-dnl checks the results of libgnutls-config to some extent
-dnl
-      rm -f conf.libgnutlstest
-      AC_TRY_RUN([
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <gnutls/gnutls.h>
-
-int
-main ()
-{
-    system ("touch conf.libgnutlstest");
-
-    if( strcmp( gnutls_check_version(NULL), "$libgnutls_config_version" ) )
-    {
-      printf("\n*** 'libgnutls-config --version' returned %s, but LIBGNUTLS (%s)\n",
-             "$libgnutls_config_version", gnutls_check_version(NULL) );
-      printf("*** was found! If libgnutls-config was correct, then it is best\n");
-      printf("*** to remove the old version of LIBGNUTLS. You may also be able to fix the error\n");
-      printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
-      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
-      printf("*** required on your system.\n");
-      printf("*** If libgnutls-config was wrong, set the environment variable LIBGNUTLS_CONFIG\n");
-      printf("*** to point to the correct copy of libgnutls-config, and remove the file config.cache\n");
-      printf("*** before re-running configure\n");
-    }
-    else if ( strcmp(gnutls_check_version(NULL), LIBGNUTLS_VERSION ) )
-    {
-      printf("\n*** LIBGNUTLS header file (version %s) does not match\n", LIBGNUTLS_VERSION);
-      printf("*** library (version %s)\n", gnutls_check_version(NULL) );
-    }
-    else
-    {
-      if ( gnutls_check_version( "$min_libgnutls_version" ) )
-      {
-        return 0;
-      }
-     else
-      {
-        printf("no\n*** An old version of LIBGNUTLS (%s) was found.\n",
-                gnutls_check_version(NULL) );
-        printf("*** You need a version of LIBGNUTLS newer than %s. The latest version of\n",
-               "$min_libgnutls_version" );
-        printf("*** LIBGNUTLS is always available from ftp://gnutls.hellug.gr/pub/gnutls.\n");
-        printf("*** \n");
-        printf("*** If you have already installed a sufficiently new version, this error\n");
-        printf("*** probably means that the wrong copy of the libgnutls-config shell script is\n");
-        printf("*** being found. The easiest way to fix this is to remove the old version\n");
-        printf("*** of LIBGNUTLS, but you can also set the LIBGNUTLS_CONFIG environment to point to the\n");
-        printf("*** correct copy of libgnutls-config. (In this case, you will have to\n");
-        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
-        printf("*** so that the correct libraries are found at run-time))\n");
-      }
-    }
-  return 1;
-}
-],, no_libgnutls=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
-       CFLAGS="$ac_save_CFLAGS"
-       LIBS="$ac_save_LIBS"
-  fi
-
-  if test "x$no_libgnutls" = x ; then
-     AC_MSG_RESULT(yes)
-     ifelse([$2], , :, [$2])
-  else
-     if test -f conf.libgnutlstest ; then
-        :
-     else
-        AC_MSG_RESULT(no)
-     fi
-     if test "$LIBGNUTLS_CONFIG" = "no" ; then
-       echo "*** The libgnutls-config script installed by LIBGNUTLS could not be found"
-       echo "*** If LIBGNUTLS was installed in PREFIX, make sure PREFIX/bin is in"
-       echo "*** your path, or set the LIBGNUTLS_CONFIG environment variable to the"
-       echo "*** full path to libgnutls-config."
-     else
-       if test -f conf.libgnutlstest ; then
-        :
-       else
-          echo "*** Could not run libgnutls test program, checking why..."
-          CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
-          LIBS="$LIBS $LIBGNUTLS_LIBS"
-          AC_TRY_LINK([
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <gnutls/gnutls.h>
-],      [ return !!gnutls_check_version(NULL); ],
-        [ echo "*** The test program compiled, but did not run. This usually means"
-          echo "*** that the run-time linker is not finding LIBGNUTLS or finding the wrong"
-          echo "*** version of LIBGNUTLS. If it is not finding LIBGNUTLS, you'll need to set your"
-          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
-          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
-          echo "*** is required on your system"
-          echo "***"
-          echo "*** If you have an old version installed, it is best to remove it, although"
-          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
-          echo "***" ],
-        [ echo "*** The test program failed to compile or link. See the file config.log for the"
-          echo "*** exact error that occured. This usually means LIBGNUTLS was incorrectly installed"
-          echo "*** or that you have moved LIBGNUTLS since it was installed. In the latter case, you"
-          echo "*** may want to edit the libgnutls-config script: $LIBGNUTLS_CONFIG" ])
-          CFLAGS="$ac_save_CFLAGS"
-          LIBS="$ac_save_LIBS"
-       fi
-     fi
-     LIBGNUTLS_CFLAGS=""
-     LIBGNUTLS_LIBS=""
-     ifelse([$3], , :, [$3])
-  fi
-  rm -f conf.libgnutlstest
-  AC_SUBST(LIBGNUTLS_CFLAGS)
-  AC_SUBST(LIBGNUTLS_LIBS)
-])
-
-dnl *-*wedit:notab*-*  Please keep this as the last line.
-
-# Configure paths for LIBXML2
-# Mike Hommey 2004-06-19
-# use CPPFLAGS instead of CFLAGS
-# Toshio Kuratomi 2001-04-21
-# Adapted from:
-# Configure paths for GLIB
-# Owen Taylor     97-11-3
-
-dnl AM_PATH_XML2([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
-dnl Test for XML, and define XML_CPPFLAGS and XML_LIBS
-dnl
-AC_DEFUN([AM_PATH_XML2],[ 
-AC_ARG_WITH(xml-prefix,
-            [  --with-xml-prefix=PFX   Prefix where libxml is installed (optional)],
-            xml_config_prefix="$withval", xml_config_prefix="")
-AC_ARG_WITH(xml-exec-prefix,
-            [  --with-xml-exec-prefix=PFX Exec prefix where libxml is installed (optional)],
-            xml_config_exec_prefix="$withval", xml_config_exec_prefix="")
-AC_ARG_ENABLE(xmltest,
-              [  --disable-xmltest       Do not try to compile and run a test LIBXML program],,
-              enable_xmltest=yes)
-
-  if test x$xml_config_exec_prefix != x ; then
-     xml_config_args="$xml_config_args"
-     if test x${XML2_CONFIG+set} != xset ; then
-        XML2_CONFIG=$xml_config_exec_prefix/bin/xml2-config
-     fi
-  fi
-  if test x$xml_config_prefix != x ; then
-     xml_config_args="$xml_config_args --prefix=$xml_config_prefix"
-     if test x${XML2_CONFIG+set} != xset ; then
-        XML2_CONFIG=$xml_config_prefix/bin/xml2-config
-     fi
-  fi
-
-  AC_PATH_PROG(XML2_CONFIG, xml2-config, no)
-  min_xml_version=ifelse([$1], ,2.0.0,[$1])
-  AC_MSG_CHECKING(for libxml - version >= $min_xml_version)
-  no_xml=""
-  if test "$XML2_CONFIG" = "no" ; then
-    no_xml=yes
-  else
-    XML_CPPFLAGS=`$XML2_CONFIG $xml_config_args --cflags`
-    XML_LIBS=`$XML2_CONFIG $xml_config_args --libs`
-    xml_config_major_version=`$XML2_CONFIG $xml_config_args --version | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
-    xml_config_minor_version=`$XML2_CONFIG $xml_config_args --version | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
-    xml_config_micro_version=`$XML2_CONFIG $xml_config_args --version | \
-           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
-    if test "x$enable_xmltest" = "xyes" ; then
-      ac_save_CPPFLAGS="$CPPFLAGS"
-      ac_save_LIBS="$LIBS"
-      CPPFLAGS="$CPPFLAGS $XML_CPPFLAGS"
-      LIBS="$XML_LIBS $LIBS"
-dnl
-dnl Now check if the installed libxml is sufficiently new.
-dnl (Also sanity checks the results of xml2-config to some extent)
-dnl
-      rm -f conf.xmltest
-      AC_TRY_RUN([
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <libxml/xmlversion.h>
-
-int 
-main()
-{
-  int xml_major_version, xml_minor_version, xml_micro_version;
-  int major, minor, micro;
-  char *tmp_version;
-
-  system("touch conf.xmltest");
-
-  /* Capture xml2-config output via autoconf/configure variables */
-  /* HP/UX 9 (%@#!) writes to sscanf strings */
-  tmp_version = (char *)strdup("$min_xml_version");
-  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
-     printf("%s, bad version string from xml2-config\n", "$min_xml_version");
-     exit(1);
-   }
-   free(tmp_version);
-
-   /* Capture the version information from the header files */
-   tmp_version = (char *)strdup(LIBXML_DOTTED_VERSION);
-   if (sscanf(tmp_version, "%d.%d.%d", &xml_major_version, &xml_minor_version, &xml_micro_version) != 3) {
-     printf("%s, bad version string from libxml includes\n", "LIBXML_DOTTED_VERSION");
-     exit(1);
-   }
-   free(tmp_version);
-
- /* Compare xml2-config output to the libxml headers */
-  if ((xml_major_version != $xml_config_major_version) ||
-      (xml_minor_version != $xml_config_minor_version) ||
-      (xml_micro_version != $xml_config_micro_version))
-    {
-      printf("*** libxml header files (version %d.%d.%d) do not match\n",
-         xml_major_version, xml_minor_version, xml_micro_version);
-      printf("*** xml2-config (version %d.%d.%d)\n",
-         $xml_config_major_version, $xml_config_minor_version, $xml_config_micro_version);
-      return 1;
-    } 
-/* Compare the headers to the library to make sure we match */
-  /* Less than ideal -- doesn't provide us with return value feedback, 
-   * only exits if there's a serious mismatch between header and library.
-   */
-    LIBXML_TEST_VERSION;
-
-    /* Test that the library is greater than our minimum version */
-    if ((xml_major_version > major) ||
-        ((xml_major_version == major) && (xml_minor_version > minor)) ||
-        ((xml_major_version == major) && (xml_minor_version == minor) &&
-        (xml_micro_version >= micro)))
-      {
-        return 0;
-       }
-     else
-      {
-        printf("\n*** An old version of libxml (%d.%d.%d) was found.\n",
-               xml_major_version, xml_minor_version, xml_micro_version);
-        printf("*** You need a version of libxml newer than %d.%d.%d. The latest version of\n",
-           major, minor, micro);
-        printf("*** libxml is always available from ftp://ftp.xmlsoft.org.\n");
-        printf("***\n");
-        printf("*** If you have already installed a sufficiently new version, this error\n");
-        printf("*** probably means that the wrong copy of the xml2-config shell script is\n");
-        printf("*** being found. The easiest way to fix this is to remove the old version\n");
-        printf("*** of LIBXML, but you can also set the XML2_CONFIG environment to point to the\n");
-        printf("*** correct copy of xml2-config. (In this case, you will have to\n");
-        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
-        printf("*** so that the correct libraries are found at run-time))\n");
-    }
-  return 1;
-}
-],, no_xml=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
-       CPPFLAGS="$ac_save_CPPFLAGS"
-       LIBS="$ac_save_LIBS"
-     fi
-  fi
-
-  if test "x$no_xml" = x ; then
-     AC_MSG_RESULT(yes (version $xml_config_major_version.$xml_config_minor_version.$xml_config_micro_version))
-     ifelse([$2], , :, [$2])     
-  else
-     AC_MSG_RESULT(no)
-     if test "$XML2_CONFIG" = "no" ; then
-       echo "*** The xml2-config script installed by LIBXML could not be found"
-       echo "*** If libxml was installed in PREFIX, make sure PREFIX/bin is in"
-       echo "*** your path, or set the XML2_CONFIG environment variable to the"
-       echo "*** full path to xml2-config."
-     else
-       if test -f conf.xmltest ; then
-        :
-       else
-          echo "*** Could not run libxml test program, checking why..."
-          CPPFLAGS="$CPPFLAGS $XML_CPPFLAGS"
-          LIBS="$LIBS $XML_LIBS"
-          AC_TRY_LINK([
-#include <libxml/xmlversion.h>
-#include <stdio.h>
-],      [ LIBXML_TEST_VERSION; return 0;],
-        [ echo "*** The test program compiled, but did not run. This usually means"
-          echo "*** that the run-time linker is not finding LIBXML or finding the wrong"
-          echo "*** version of LIBXML. If it is not finding LIBXML, you'll need to set your"
-          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
-          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
-          echo "*** is required on your system"
-          echo "***"
-          echo "*** If you have an old version installed, it is best to remove it, although"
-          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH" ],
-        [ echo "*** The test program failed to compile or link. See the file config.log for the"
-          echo "*** exact error that occured. This usually means LIBXML was incorrectly installed"
-          echo "*** or that you have moved LIBXML since it was installed. In the latter case, you"
-          echo "*** may want to edit the xml2-config script: $XML2_CONFIG" ])
-          CPPFLAGS="$ac_save_CPPFLAGS"
-          LIBS="$ac_save_LIBS"
-       fi
-     fi
-
-     XML_CPPFLAGS=""
-     XML_LIBS=""
-     ifelse([$3], , :, [$3])
-  fi
-  AC_SUBST(XML_CPPFLAGS)
-  AC_SUBST(XML_LIBS)
-  rm -f conf.xmltest
-])
-
 # Copyright (C) 2002, 2003, 2005, 2006, 2007  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
@@ -1420,6 +868,7 @@ AC_SUBST([am__untar])
 
 m4_include([m4/aria2_arg.m4])
 m4_include([m4/codeset.m4])
+m4_include([m4/cppunit.m4])
 m4_include([m4/gettext.m4])
 m4_include([m4/glibc2.m4])
 m4_include([m4/glibc21.m4])
@@ -1437,6 +886,9 @@ m4_include([m4/lib-prefix.m4])
 m4_include([m4/libares.m4])
 m4_include([m4/libcares.m4])
 m4_include([m4/libexpat.m4])
+m4_include([m4/libgcrypt.m4])
+m4_include([m4/libgnutls.m4])
+m4_include([m4/libxml2.m4])
 m4_include([m4/libz.m4])
 m4_include([m4/lock.m4])
 m4_include([m4/longlong.m4])
diff --git a/doc/Makefile.in b/doc/Makefile.in
index c8244aaa..00148659 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -38,24 +38,26 @@ DIST_COMMON = $(dist_doc_DATA) $(srcdir)/Makefile.am \
 	$(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/aria2_arg.m4 \
-	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/gettext.m4 \
-	$(top_srcdir)/m4/glibc2.m4 $(top_srcdir)/m4/glibc21.m4 \
-	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intdiv0.m4 \
-	$(top_srcdir)/m4/intl.m4 $(top_srcdir)/m4/intlmacosx.m4 \
-	$(top_srcdir)/m4/intmax.m4 $(top_srcdir)/m4/inttypes-pri.m4 \
+	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/cppunit.m4 \
+	$(top_srcdir)/m4/gettext.m4 $(top_srcdir)/m4/glibc2.m4 \
+	$(top_srcdir)/m4/glibc21.m4 $(top_srcdir)/m4/iconv.m4 \
+	$(top_srcdir)/m4/intdiv0.m4 $(top_srcdir)/m4/intl.m4 \
+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/intmax.m4 \
+	$(top_srcdir)/m4/inttypes-pri.m4 \
 	$(top_srcdir)/m4/inttypes_h.m4 $(top_srcdir)/m4/lcmessage.m4 \
 	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
 	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/libares.m4 \
 	$(top_srcdir)/m4/libcares.m4 $(top_srcdir)/m4/libexpat.m4 \
-	$(top_srcdir)/m4/libz.m4 $(top_srcdir)/m4/lock.m4 \
-	$(top_srcdir)/m4/longlong.m4 $(top_srcdir)/m4/nls.m4 \
-	$(top_srcdir)/m4/openssl.m4 $(top_srcdir)/m4/po.m4 \
-	$(top_srcdir)/m4/printf-posix.m4 $(top_srcdir)/m4/progtest.m4 \
-	$(top_srcdir)/m4/size_max.m4 $(top_srcdir)/m4/sqlite3.m4 \
-	$(top_srcdir)/m4/stdint_h.m4 $(top_srcdir)/m4/uintmax_t.m4 \
-	$(top_srcdir)/m4/visibility.m4 $(top_srcdir)/m4/wchar_t.m4 \
-	$(top_srcdir)/m4/wint_t.m4 $(top_srcdir)/m4/xsize.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/libgcrypt.m4 $(top_srcdir)/m4/libgnutls.m4 \
+	$(top_srcdir)/m4/libxml2.m4 $(top_srcdir)/m4/libz.m4 \
+	$(top_srcdir)/m4/lock.m4 $(top_srcdir)/m4/longlong.m4 \
+	$(top_srcdir)/m4/nls.m4 $(top_srcdir)/m4/openssl.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/printf-posix.m4 \
+	$(top_srcdir)/m4/progtest.m4 $(top_srcdir)/m4/size_max.m4 \
+	$(top_srcdir)/m4/sqlite3.m4 $(top_srcdir)/m4/stdint_h.m4 \
+	$(top_srcdir)/m4/uintmax_t.m4 $(top_srcdir)/m4/visibility.m4 \
+	$(top_srcdir)/m4/wchar_t.m4 $(top_srcdir)/m4/wint_t.m4 \
+	$(top_srcdir)/m4/xsize.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
diff --git a/lib/Makefile.in b/lib/Makefile.in
index cd6509e3..ff8c96a2 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -36,24 +36,26 @@ subdir = lib
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/aria2_arg.m4 \
-	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/gettext.m4 \
-	$(top_srcdir)/m4/glibc2.m4 $(top_srcdir)/m4/glibc21.m4 \
-	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intdiv0.m4 \
-	$(top_srcdir)/m4/intl.m4 $(top_srcdir)/m4/intlmacosx.m4 \
-	$(top_srcdir)/m4/intmax.m4 $(top_srcdir)/m4/inttypes-pri.m4 \
+	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/cppunit.m4 \
+	$(top_srcdir)/m4/gettext.m4 $(top_srcdir)/m4/glibc2.m4 \
+	$(top_srcdir)/m4/glibc21.m4 $(top_srcdir)/m4/iconv.m4 \
+	$(top_srcdir)/m4/intdiv0.m4 $(top_srcdir)/m4/intl.m4 \
+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/intmax.m4 \
+	$(top_srcdir)/m4/inttypes-pri.m4 \
 	$(top_srcdir)/m4/inttypes_h.m4 $(top_srcdir)/m4/lcmessage.m4 \
 	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
 	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/libares.m4 \
 	$(top_srcdir)/m4/libcares.m4 $(top_srcdir)/m4/libexpat.m4 \
-	$(top_srcdir)/m4/libz.m4 $(top_srcdir)/m4/lock.m4 \
-	$(top_srcdir)/m4/longlong.m4 $(top_srcdir)/m4/nls.m4 \
-	$(top_srcdir)/m4/openssl.m4 $(top_srcdir)/m4/po.m4 \
-	$(top_srcdir)/m4/printf-posix.m4 $(top_srcdir)/m4/progtest.m4 \
-	$(top_srcdir)/m4/size_max.m4 $(top_srcdir)/m4/sqlite3.m4 \
-	$(top_srcdir)/m4/stdint_h.m4 $(top_srcdir)/m4/uintmax_t.m4 \
-	$(top_srcdir)/m4/visibility.m4 $(top_srcdir)/m4/wchar_t.m4 \
-	$(top_srcdir)/m4/wint_t.m4 $(top_srcdir)/m4/xsize.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/libgcrypt.m4 $(top_srcdir)/m4/libgnutls.m4 \
+	$(top_srcdir)/m4/libxml2.m4 $(top_srcdir)/m4/libz.m4 \
+	$(top_srcdir)/m4/lock.m4 $(top_srcdir)/m4/longlong.m4 \
+	$(top_srcdir)/m4/nls.m4 $(top_srcdir)/m4/openssl.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/printf-posix.m4 \
+	$(top_srcdir)/m4/progtest.m4 $(top_srcdir)/m4/size_max.m4 \
+	$(top_srcdir)/m4/sqlite3.m4 $(top_srcdir)/m4/stdint_h.m4 \
+	$(top_srcdir)/m4/uintmax_t.m4 $(top_srcdir)/m4/visibility.m4 \
+	$(top_srcdir)/m4/wchar_t.m4 $(top_srcdir)/m4/wint_t.m4 \
+	$(top_srcdir)/m4/xsize.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
diff --git a/m4/Makefile.in b/m4/Makefile.in
index a7a9cd07..b6d22ab0 100644
--- a/m4/Makefile.in
+++ b/m4/Makefile.in
@@ -36,24 +36,26 @@ subdir = m4
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in ChangeLog
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/aria2_arg.m4 \
-	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/gettext.m4 \
-	$(top_srcdir)/m4/glibc2.m4 $(top_srcdir)/m4/glibc21.m4 \
-	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intdiv0.m4 \
-	$(top_srcdir)/m4/intl.m4 $(top_srcdir)/m4/intlmacosx.m4 \
-	$(top_srcdir)/m4/intmax.m4 $(top_srcdir)/m4/inttypes-pri.m4 \
+	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/cppunit.m4 \
+	$(top_srcdir)/m4/gettext.m4 $(top_srcdir)/m4/glibc2.m4 \
+	$(top_srcdir)/m4/glibc21.m4 $(top_srcdir)/m4/iconv.m4 \
+	$(top_srcdir)/m4/intdiv0.m4 $(top_srcdir)/m4/intl.m4 \
+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/intmax.m4 \
+	$(top_srcdir)/m4/inttypes-pri.m4 \
 	$(top_srcdir)/m4/inttypes_h.m4 $(top_srcdir)/m4/lcmessage.m4 \
 	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
 	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/libares.m4 \
 	$(top_srcdir)/m4/libcares.m4 $(top_srcdir)/m4/libexpat.m4 \
-	$(top_srcdir)/m4/libz.m4 $(top_srcdir)/m4/lock.m4 \
-	$(top_srcdir)/m4/longlong.m4 $(top_srcdir)/m4/nls.m4 \
-	$(top_srcdir)/m4/openssl.m4 $(top_srcdir)/m4/po.m4 \
-	$(top_srcdir)/m4/printf-posix.m4 $(top_srcdir)/m4/progtest.m4 \
-	$(top_srcdir)/m4/size_max.m4 $(top_srcdir)/m4/sqlite3.m4 \
-	$(top_srcdir)/m4/stdint_h.m4 $(top_srcdir)/m4/uintmax_t.m4 \
-	$(top_srcdir)/m4/visibility.m4 $(top_srcdir)/m4/wchar_t.m4 \
-	$(top_srcdir)/m4/wint_t.m4 $(top_srcdir)/m4/xsize.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/libgcrypt.m4 $(top_srcdir)/m4/libgnutls.m4 \
+	$(top_srcdir)/m4/libxml2.m4 $(top_srcdir)/m4/libz.m4 \
+	$(top_srcdir)/m4/lock.m4 $(top_srcdir)/m4/longlong.m4 \
+	$(top_srcdir)/m4/nls.m4 $(top_srcdir)/m4/openssl.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/printf-posix.m4 \
+	$(top_srcdir)/m4/progtest.m4 $(top_srcdir)/m4/size_max.m4 \
+	$(top_srcdir)/m4/sqlite3.m4 $(top_srcdir)/m4/stdint_h.m4 \
+	$(top_srcdir)/m4/uintmax_t.m4 $(top_srcdir)/m4/visibility.m4 \
+	$(top_srcdir)/m4/wchar_t.m4 $(top_srcdir)/m4/wint_t.m4 \
+	$(top_srcdir)/m4/xsize.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
diff --git a/m4/cppunit.m4 b/m4/cppunit.m4
new file mode 100644
index 00000000..41f067b6
--- /dev/null
+++ b/m4/cppunit.m4
@@ -0,0 +1,92 @@
+dnl
+dnl AM_PATH_CPPUNIT(MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+dnl
+AC_DEFUN([AM_PATH_CPPUNIT],
+[
+
+AC_ARG_WITH(cppunit-prefix,[  --with-cppunit-prefix=PFX   Prefix where CppUnit is installed (optional)],
+            cppunit_config_prefix="$withval", cppunit_config_prefix="")
+AC_ARG_WITH(cppunit-exec-prefix,[  --with-cppunit-exec-prefix=PFX  Exec prefix where CppUnit is installed (optional)],
+            cppunit_config_exec_prefix="$withval", cppunit_config_exec_prefix="")
+
+  if test x$cppunit_config_exec_prefix != x ; then
+     cppunit_config_args="$cppunit_config_args --exec-prefix=$cppunit_config_exec_prefix"
+     if test x${CPPUNIT_CONFIG+set} != xset ; then
+        CPPUNIT_CONFIG=$cppunit_config_exec_prefix/bin/cppunit-config
+     fi
+  fi
+  if test x$cppunit_config_prefix != x ; then
+     cppunit_config_args="$cppunit_config_args --prefix=$cppunit_config_prefix"
+     if test x${CPPUNIT_CONFIG+set} != xset ; then
+        CPPUNIT_CONFIG=$cppunit_config_prefix/bin/cppunit-config
+     fi
+  fi
+
+  AC_PATH_PROG(CPPUNIT_CONFIG, cppunit-config, no)
+  cppunit_version_min=$1
+
+  AC_MSG_CHECKING(for Cppunit - version >= $cppunit_version_min)
+  no_cppunit=""
+  if test "$CPPUNIT_CONFIG" = "no" ; then
+    AC_MSG_RESULT(no)
+    no_cppunit=yes
+  else
+    CPPUNIT_CFLAGS=`$CPPUNIT_CONFIG --cflags`
+    CPPUNIT_LIBS=`$CPPUNIT_CONFIG --libs`
+    cppunit_version=`$CPPUNIT_CONFIG --version`
+
+    cppunit_major_version=`echo $cppunit_version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+    cppunit_minor_version=`echo $cppunit_version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+    cppunit_micro_version=`echo $cppunit_version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+
+    cppunit_major_min=`echo $cppunit_version_min | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+    if test "x${cppunit_major_min}" = "x" ; then
+       cppunit_major_min=0
+    fi
+    
+    cppunit_minor_min=`echo $cppunit_version_min | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+    if test "x${cppunit_minor_min}" = "x" ; then
+       cppunit_minor_min=0
+    fi
+    
+    cppunit_micro_min=`echo $cppunit_version_min | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+    if test "x${cppunit_micro_min}" = "x" ; then
+       cppunit_micro_min=0
+    fi
+
+    cppunit_version_proper=`expr \
+        $cppunit_major_version \> $cppunit_major_min \| \
+        $cppunit_major_version \= $cppunit_major_min \& \
+        $cppunit_minor_version \> $cppunit_minor_min \| \
+        $cppunit_major_version \= $cppunit_major_min \& \
+        $cppunit_minor_version \= $cppunit_minor_min \& \
+        $cppunit_micro_version \>= $cppunit_micro_min `
+
+    if test "$cppunit_version_proper" = "1" ; then
+      AC_MSG_RESULT([$cppunit_major_version.$cppunit_minor_version.$cppunit_micro_version])
+    else
+      AC_MSG_RESULT(no)
+      no_cppunit=yes
+    fi
+  fi
+
+  if test "x$no_cppunit" = x ; then
+     ifelse([$2], , :, [$2])     
+  else
+     CPPUNIT_CFLAGS=""
+     CPPUNIT_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+
+  AC_SUBST(CPPUNIT_CFLAGS)
+  AC_SUBST(CPPUNIT_LIBS)
+])
+
+
+
diff --git a/m4/libgcrypt.m4 b/m4/libgcrypt.m4
new file mode 100644
index 00000000..854eaaa8
--- /dev/null
+++ b/m4/libgcrypt.m4
@@ -0,0 +1,108 @@
+dnl Autoconf macros for libgcrypt
+dnl       Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+dnl
+dnl This file is free software; as a special exception the author gives
+dnl unlimited permission to copy and/or distribute it, with or without
+dnl modifications, as long as this notice is preserved.
+dnl
+dnl This file is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+
+dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
+dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
+dnl Test for libgcrypt and define LIBGCRYPT_CFLAGS and LIBGCRYPT_LIBS.
+dnl MINIMUN-VERSION is a string with the version number optionalliy prefixed
+dnl with the API version to also check the API compatibility. Example:
+dnl a MINIMUN-VERSION of 1:1.2.5 won't pass the test unless the installed 
+dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1.  Using
+dnl this features allows to prevent build against newer versions of libgcrypt
+dnl with a changed API.
+dnl
+AC_DEFUN([AM_PATH_LIBGCRYPT],
+[ AC_ARG_WITH(libgcrypt-prefix,
+            AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
+                           [prefix where LIBGCRYPT is installed (optional)]),
+     libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
+  if test x$libgcrypt_config_prefix != x ; then
+     if test x${LIBGCRYPT_CONFIG+set} != xset ; then
+        LIBGCRYPT_CONFIG=$libgcrypt_config_prefix/bin/libgcrypt-config
+     fi
+  fi
+
+  AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
+  tmp=ifelse([$1], ,1:1.2.0,$1)
+  if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
+     req_libgcrypt_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`
+     min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
+  else
+     req_libgcrypt_api=0
+     min_libgcrypt_version="$tmp"
+  fi
+
+  AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
+  ok=no
+  if test "$LIBGCRYPT_CONFIG" != "no" ; then
+    req_major=`echo $min_libgcrypt_version | \
+               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
+    req_minor=`echo $min_libgcrypt_version | \
+               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
+    req_micro=`echo $min_libgcrypt_version | \
+               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
+    libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
+    major=`echo $libgcrypt_config_version | \
+               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
+    minor=`echo $libgcrypt_config_version | \
+               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
+    micro=`echo $libgcrypt_config_version | \
+               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
+    if test "$major" -gt "$req_major"; then
+        ok=yes
+    else 
+        if test "$major" -eq "$req_major"; then
+            if test "$minor" -gt "$req_minor"; then
+               ok=yes
+            else
+               if test "$minor" -eq "$req_minor"; then
+                   if test "$micro" -ge "$req_micro"; then
+                     ok=yes
+                   fi
+               fi
+            fi
+        fi
+    fi
+  fi
+  if test $ok = yes; then
+    AC_MSG_RESULT([yes ($libgcrypt_config_version)])
+  else
+    AC_MSG_RESULT(no)
+  fi
+  if test $ok = yes; then
+     # If we have a recent libgcrypt, we should also check that the
+     # API is compatible
+     if test "$req_libgcrypt_api" -gt 0 ; then
+        tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
+        if test "$tmp" -gt 0 ; then
+           AC_MSG_CHECKING([LIBGCRYPT API version])
+           if test "$req_libgcrypt_api" -eq "$tmp" ; then
+             AC_MSG_RESULT([okay])
+           else
+             ok=no
+             AC_MSG_RESULT([does not match. want=$req_libgcrypt_api got=$tmp])
+           fi
+        fi
+     fi
+  fi
+  if test $ok = yes; then
+    LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
+    LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
+    ifelse([$2], , :, [$2])
+  else
+    LIBGCRYPT_CFLAGS=""
+    LIBGCRYPT_LIBS=""
+    ifelse([$3], , :, [$3])
+  fi
+  AC_SUBST(LIBGCRYPT_CFLAGS)
+  AC_SUBST(LIBGCRYPT_LIBS)
+])
diff --git a/m4/libgnutls-extra.m4 b/m4/libgnutls-extra.m4
new file mode 100644
index 00000000..f91788f3
--- /dev/null
+++ b/m4/libgnutls-extra.m4
@@ -0,0 +1,161 @@
+dnl Autoconf macros for libgnutls-extra
+dnl $id$
+
+# Modified for LIBGNUTLS_EXTRA -- nmav
+# Configure paths for LIBGCRYPT
+# Shamelessly stolen from the one of XDELTA by Owen Taylor
+# Werner Koch   99-12-09
+
+dnl AM_PATH_LIBGNUTLS_EXTRA([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
+dnl Test for libgnutls-extra, and define LIBGNUTLS_EXTRA_CFLAGS and LIBGNUTLS_EXTRA_LIBS
+dnl
+AC_DEFUN([AM_PATH_LIBGNUTLS_EXTRA],
+[dnl
+dnl Get the cflags and libraries from the libgnutls-extra-config script
+dnl
+AC_ARG_WITH(libgnutls-extra-prefix,
+          [  --with-libgnutls-extra-prefix=PFX   Prefix where libgnutls-extra is installed (optional)],
+          libgnutls_extra_config_prefix="$withval", libgnutls_extra_config_prefix="")
+
+  if test x$libgnutls_extra_config_prefix != x ; then
+     if test x${LIBGNUTLS_EXTRA_CONFIG+set} != xset ; then
+        LIBGNUTLS_EXTRA_CONFIG=$libgnutls_extra_config_prefix/bin/libgnutls-extra-config
+     fi
+  fi
+
+  AC_PATH_PROG(LIBGNUTLS_EXTRA_CONFIG, libgnutls-extra-config, no)
+  min_libgnutls_version=ifelse([$1], ,0.1.0,$1)
+  AC_MSG_CHECKING(for libgnutls - version >= $min_libgnutls_version)
+  no_libgnutls=""
+  if test "$LIBGNUTLS_EXTRA_CONFIG" = "no" ; then
+    no_libgnutls=yes
+  else
+    LIBGNUTLS_EXTRA_CFLAGS=`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --cflags`
+    LIBGNUTLS_EXTRA_LIBS=`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --libs`
+    libgnutls_extra_config_version=`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --version`
+
+
+      ac_save_CFLAGS="$CFLAGS"
+      ac_save_LIBS="$LIBS"
+      CFLAGS="$CFLAGS $LIBGNUTLS_EXTRA_CFLAGS"
+      LIBS="$LIBS $LIBGNUTLS_EXTRA_LIBS"
+dnl
+dnl Now check if the installed libgnutls is sufficiently new. Also sanity
+dnl checks the results of libgnutls-extra-config to some extent
+dnl
+      rm -f conf.libgnutlstest
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnutls/extra.h>
+
+int
+main ()
+{
+    system ("touch conf.libgnutlstest");
+
+    if( strcmp( gnutls_extra_check_version(NULL), "$libgnutls_extra_config_version" ) )
+    {
+      printf("\n*** 'libgnutls-extra-config --version' returned %s, but LIBGNUTLS_EXTRA (%s)\n",
+             "$libgnutls_extra_config_version", gnutls_extra_check_version(NULL) );
+      printf("*** was found! If libgnutls-extra-config was correct, then it is best\n");
+      printf("*** to remove the old version of LIBGNUTLS_EXTRA. You may also be able to fix the error\n");
+      printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
+      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
+      printf("*** required on your system.\n");
+      printf("*** If libgnutls-extra-config was wrong, set the environment variable LIBGNUTLS_EXTRA_CONFIG\n");
+      printf("*** to point to the correct copy of libgnutls-extra-config, and remove the file config.cache\n");
+      printf("*** before re-running configure\n");
+    }
+    else if ( strcmp(gnutls_extra_check_version(NULL), LIBGNUTLS_EXTRA_VERSION ) )
+    {
+      printf("\n*** LIBGNUTLS_EXTRA header file (version %s) does not match\n", LIBGNUTLS_EXTRA_VERSION);
+      printf("*** library (version %s). This is may be due to a different version of gnutls\n", gnutls_extra_check_version(NULL) );
+      printf("*** and gnutls-extra.\n");
+    }
+    else
+    {
+      if ( gnutls_extra_check_version( "$min_libgnutls_version" ) )
+      {
+        return 0;
+      }
+     else
+      {
+        printf("no\n*** An old version of LIBGNUTLS_EXTRA (%s) was found.\n",
+                gnutls_extra_check_version(NULL) );
+        printf("*** You need a version of LIBGNUTLS_EXTRA newer than %s. The latest version of\n",
+               "$min_libgnutls_version" );
+        printf("*** LIBGNUTLS_EXTRA is always available from ftp://gnutls.hellug.gr/pub/gnutls.\n");
+        printf("*** \n");
+        printf("*** If you have already installed a sufficiently new version, this error\n");
+        printf("*** probably means that the wrong copy of the libgnutls-extra-config shell script is\n");
+        printf("*** being found. The easiest way to fix this is to remove the old version\n");
+        printf("*** of LIBGNUTLS_EXTRA, but you can also set the LIBGNUTLS_EXTRA_CONFIG environment to point to the\n");
+        printf("*** correct copy of libgnutls-extra-config. (In this case, you will have to\n");
+        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
+        printf("*** so that the correct libraries are found at run-time))\n");
+      }
+    }
+  return 1;
+}
+],, no_libgnutls=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+  fi
+
+  if test "x$no_libgnutls" = x ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$2], , :, [$2])
+  else
+     if test -f conf.libgnutlstest ; then
+        :
+     else
+        AC_MSG_RESULT(no)
+     fi
+     if test "$LIBGNUTLS_EXTRA_CONFIG" = "no" ; then
+       echo "*** The libgnutls-extra-config script installed by LIBGNUTLS_EXTRA could not be found"
+       echo "*** If LIBGNUTLS_EXTRA was installed in PREFIX, make sure PREFIX/bin is in"
+       echo "*** your path, or set the LIBGNUTLS_EXTRA_CONFIG environment variable to the"
+       echo "*** full path to libgnutls-extra-config."
+     else
+       if test -f conf.libgnutlstest ; then
+        :
+       else
+          echo "*** Could not run libgnutls test program, checking why..."
+          CFLAGS="$CFLAGS $LIBGNUTLS_EXTRA_CFLAGS"
+          LIBS="$LIBS $LIBGNUTLS_EXTRA_LIBS"
+          AC_TRY_LINK([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnutls/extra.h>
+],      [ return !!gnutls_extra_check_version(NULL); ],
+        [ echo "*** The test program compiled, but did not run. This usually means"
+          echo "*** that the run-time linker is not finding LIBGNUTLS_EXTRA or finding the wrong"
+          echo "*** version of LIBGNUTLS_EXTRA. If it is not finding LIBGNUTLS_EXTRA, you'll need to set your"
+          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
+          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
+          echo "*** is required on your system"
+          echo "***"
+          echo "*** If you have an old version installed, it is best to remove it, although"
+          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
+          echo "***" ],
+        [ echo "*** The test program failed to compile or link. See the file config.log for the"
+          echo "*** exact error that occured. This usually means LIBGNUTLS_EXTRA was incorrectly installed"
+          echo "*** or that you have moved LIBGNUTLS_EXTRA since it was installed. In the latter case, you"
+          echo "*** may want to edit the libgnutls-extra-config script: $LIBGNUTLS_EXTRA_CONFIG" ])
+          CFLAGS="$ac_save_CFLAGS"
+          LIBS="$ac_save_LIBS"
+       fi
+     fi
+     LIBGNUTLS_EXTRA_CFLAGS=""
+     LIBGNUTLS_EXTRA_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+  rm -f conf.libgnutlstest
+  AC_SUBST(LIBGNUTLS_EXTRA_CFLAGS)
+  AC_SUBST(LIBGNUTLS_EXTRA_LIBS)
+])
+
+dnl *-*wedit:notab*-*  Please keep this as the last line.
diff --git a/m4/libgnutls.m4 b/m4/libgnutls.m4
new file mode 100644
index 00000000..99f0aa27
--- /dev/null
+++ b/m4/libgnutls.m4
@@ -0,0 +1,160 @@
+dnl Autoconf macros for libgnutls
+dnl $id$
+
+# Modified for LIBGNUTLS -- nmav
+# Configure paths for LIBGCRYPT
+# Shamelessly stolen from the one of XDELTA by Owen Taylor
+# Werner Koch   99-12-09
+
+dnl AM_PATH_LIBGNUTLS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
+dnl Test for libgnutls, and define LIBGNUTLS_CFLAGS and LIBGNUTLS_LIBS
+dnl
+AC_DEFUN([AM_PATH_LIBGNUTLS],
+[dnl
+dnl Get the cflags and libraries from the libgnutls-config script
+dnl
+AC_ARG_WITH(libgnutls-prefix,
+          [  --with-libgnutls-prefix=PFX   Prefix where libgnutls is installed (optional)],
+          libgnutls_config_prefix="$withval", libgnutls_config_prefix="")
+
+  if test x$libgnutls_config_prefix != x ; then
+     if test x${LIBGNUTLS_CONFIG+set} != xset ; then
+        LIBGNUTLS_CONFIG=$libgnutls_config_prefix/bin/libgnutls-config
+     fi
+  fi
+
+  AC_PATH_PROG(LIBGNUTLS_CONFIG, libgnutls-config, no)
+  min_libgnutls_version=ifelse([$1], ,0.1.0,$1)
+  AC_MSG_CHECKING(for libgnutls - version >= $min_libgnutls_version)
+  no_libgnutls=""
+  if test "$LIBGNUTLS_CONFIG" = "no" ; then
+    no_libgnutls=yes
+  else
+    LIBGNUTLS_CFLAGS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --cflags`
+    LIBGNUTLS_LIBS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --libs`
+    libgnutls_config_version=`$LIBGNUTLS_CONFIG $libgnutls_config_args --version`
+
+
+      ac_save_CFLAGS="$CFLAGS"
+      ac_save_LIBS="$LIBS"
+      CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
+      LIBS="$LIBS $LIBGNUTLS_LIBS"
+dnl
+dnl Now check if the installed libgnutls is sufficiently new. Also sanity
+dnl checks the results of libgnutls-config to some extent
+dnl
+      rm -f conf.libgnutlstest
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnutls/gnutls.h>
+
+int
+main ()
+{
+    system ("touch conf.libgnutlstest");
+
+    if( strcmp( gnutls_check_version(NULL), "$libgnutls_config_version" ) )
+    {
+      printf("\n*** 'libgnutls-config --version' returned %s, but LIBGNUTLS (%s)\n",
+             "$libgnutls_config_version", gnutls_check_version(NULL) );
+      printf("*** was found! If libgnutls-config was correct, then it is best\n");
+      printf("*** to remove the old version of LIBGNUTLS. You may also be able to fix the error\n");
+      printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
+      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
+      printf("*** required on your system.\n");
+      printf("*** If libgnutls-config was wrong, set the environment variable LIBGNUTLS_CONFIG\n");
+      printf("*** to point to the correct copy of libgnutls-config, and remove the file config.cache\n");
+      printf("*** before re-running configure\n");
+    }
+    else if ( strcmp(gnutls_check_version(NULL), LIBGNUTLS_VERSION ) )
+    {
+      printf("\n*** LIBGNUTLS header file (version %s) does not match\n", LIBGNUTLS_VERSION);
+      printf("*** library (version %s)\n", gnutls_check_version(NULL) );
+    }
+    else
+    {
+      if ( gnutls_check_version( "$min_libgnutls_version" ) )
+      {
+        return 0;
+      }
+     else
+      {
+        printf("no\n*** An old version of LIBGNUTLS (%s) was found.\n",
+                gnutls_check_version(NULL) );
+        printf("*** You need a version of LIBGNUTLS newer than %s. The latest version of\n",
+               "$min_libgnutls_version" );
+        printf("*** LIBGNUTLS is always available from ftp://gnutls.hellug.gr/pub/gnutls.\n");
+        printf("*** \n");
+        printf("*** If you have already installed a sufficiently new version, this error\n");
+        printf("*** probably means that the wrong copy of the libgnutls-config shell script is\n");
+        printf("*** being found. The easiest way to fix this is to remove the old version\n");
+        printf("*** of LIBGNUTLS, but you can also set the LIBGNUTLS_CONFIG environment to point to the\n");
+        printf("*** correct copy of libgnutls-config. (In this case, you will have to\n");
+        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
+        printf("*** so that the correct libraries are found at run-time))\n");
+      }
+    }
+  return 1;
+}
+],, no_libgnutls=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+  fi
+
+  if test "x$no_libgnutls" = x ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$2], , :, [$2])
+  else
+     if test -f conf.libgnutlstest ; then
+        :
+     else
+        AC_MSG_RESULT(no)
+     fi
+     if test "$LIBGNUTLS_CONFIG" = "no" ; then
+       echo "*** The libgnutls-config script installed by LIBGNUTLS could not be found"
+       echo "*** If LIBGNUTLS was installed in PREFIX, make sure PREFIX/bin is in"
+       echo "*** your path, or set the LIBGNUTLS_CONFIG environment variable to the"
+       echo "*** full path to libgnutls-config."
+     else
+       if test -f conf.libgnutlstest ; then
+        :
+       else
+          echo "*** Could not run libgnutls test program, checking why..."
+          CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
+          LIBS="$LIBS $LIBGNUTLS_LIBS"
+          AC_TRY_LINK([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnutls/gnutls.h>
+],      [ return !!gnutls_check_version(NULL); ],
+        [ echo "*** The test program compiled, but did not run. This usually means"
+          echo "*** that the run-time linker is not finding LIBGNUTLS or finding the wrong"
+          echo "*** version of LIBGNUTLS. If it is not finding LIBGNUTLS, you'll need to set your"
+          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
+          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
+          echo "*** is required on your system"
+          echo "***"
+          echo "*** If you have an old version installed, it is best to remove it, although"
+          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
+          echo "***" ],
+        [ echo "*** The test program failed to compile or link. See the file config.log for the"
+          echo "*** exact error that occured. This usually means LIBGNUTLS was incorrectly installed"
+          echo "*** or that you have moved LIBGNUTLS since it was installed. In the latter case, you"
+          echo "*** may want to edit the libgnutls-config script: $LIBGNUTLS_CONFIG" ])
+          CFLAGS="$ac_save_CFLAGS"
+          LIBS="$ac_save_LIBS"
+       fi
+     fi
+     LIBGNUTLS_CFLAGS=""
+     LIBGNUTLS_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+  rm -f conf.libgnutlstest
+  AC_SUBST(LIBGNUTLS_CFLAGS)
+  AC_SUBST(LIBGNUTLS_LIBS)
+])
+
+dnl *-*wedit:notab*-*  Please keep this as the last line.
diff --git a/m4/libxml2.m4 b/m4/libxml2.m4
new file mode 100644
index 00000000..68cd8242
--- /dev/null
+++ b/m4/libxml2.m4
@@ -0,0 +1,188 @@
+# Configure paths for LIBXML2
+# Mike Hommey 2004-06-19
+# use CPPFLAGS instead of CFLAGS
+# Toshio Kuratomi 2001-04-21
+# Adapted from:
+# Configure paths for GLIB
+# Owen Taylor     97-11-3
+
+dnl AM_PATH_XML2([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for XML, and define XML_CPPFLAGS and XML_LIBS
+dnl
+AC_DEFUN([AM_PATH_XML2],[ 
+AC_ARG_WITH(xml-prefix,
+            [  --with-xml-prefix=PFX   Prefix where libxml is installed (optional)],
+            xml_config_prefix="$withval", xml_config_prefix="")
+AC_ARG_WITH(xml-exec-prefix,
+            [  --with-xml-exec-prefix=PFX Exec prefix where libxml is installed (optional)],
+            xml_config_exec_prefix="$withval", xml_config_exec_prefix="")
+AC_ARG_ENABLE(xmltest,
+              [  --disable-xmltest       Do not try to compile and run a test LIBXML program],,
+              enable_xmltest=yes)
+
+  if test x$xml_config_exec_prefix != x ; then
+     xml_config_args="$xml_config_args"
+     if test x${XML2_CONFIG+set} != xset ; then
+        XML2_CONFIG=$xml_config_exec_prefix/bin/xml2-config
+     fi
+  fi
+  if test x$xml_config_prefix != x ; then
+     xml_config_args="$xml_config_args --prefix=$xml_config_prefix"
+     if test x${XML2_CONFIG+set} != xset ; then
+        XML2_CONFIG=$xml_config_prefix/bin/xml2-config
+     fi
+  fi
+
+  AC_PATH_PROG(XML2_CONFIG, xml2-config, no)
+  min_xml_version=ifelse([$1], ,2.0.0,[$1])
+  AC_MSG_CHECKING(for libxml - version >= $min_xml_version)
+  no_xml=""
+  if test "$XML2_CONFIG" = "no" ; then
+    no_xml=yes
+  else
+    XML_CPPFLAGS=`$XML2_CONFIG $xml_config_args --cflags`
+    XML_LIBS=`$XML2_CONFIG $xml_config_args --libs`
+    xml_config_major_version=`$XML2_CONFIG $xml_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+    xml_config_minor_version=`$XML2_CONFIG $xml_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+    xml_config_micro_version=`$XML2_CONFIG $xml_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+    if test "x$enable_xmltest" = "xyes" ; then
+      ac_save_CPPFLAGS="$CPPFLAGS"
+      ac_save_LIBS="$LIBS"
+      CPPFLAGS="$CPPFLAGS $XML_CPPFLAGS"
+      LIBS="$XML_LIBS $LIBS"
+dnl
+dnl Now check if the installed libxml is sufficiently new.
+dnl (Also sanity checks the results of xml2-config to some extent)
+dnl
+      rm -f conf.xmltest
+      AC_TRY_RUN([
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <libxml/xmlversion.h>
+
+int 
+main()
+{
+  int xml_major_version, xml_minor_version, xml_micro_version;
+  int major, minor, micro;
+  char *tmp_version;
+
+  system("touch conf.xmltest");
+
+  /* Capture xml2-config output via autoconf/configure variables */
+  /* HP/UX 9 (%@#!) writes to sscanf strings */
+  tmp_version = (char *)strdup("$min_xml_version");
+  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
+     printf("%s, bad version string from xml2-config\n", "$min_xml_version");
+     exit(1);
+   }
+   free(tmp_version);
+
+   /* Capture the version information from the header files */
+   tmp_version = (char *)strdup(LIBXML_DOTTED_VERSION);
+   if (sscanf(tmp_version, "%d.%d.%d", &xml_major_version, &xml_minor_version, &xml_micro_version) != 3) {
+     printf("%s, bad version string from libxml includes\n", "LIBXML_DOTTED_VERSION");
+     exit(1);
+   }
+   free(tmp_version);
+
+ /* Compare xml2-config output to the libxml headers */
+  if ((xml_major_version != $xml_config_major_version) ||
+      (xml_minor_version != $xml_config_minor_version) ||
+      (xml_micro_version != $xml_config_micro_version))
+    {
+      printf("*** libxml header files (version %d.%d.%d) do not match\n",
+         xml_major_version, xml_minor_version, xml_micro_version);
+      printf("*** xml2-config (version %d.%d.%d)\n",
+         $xml_config_major_version, $xml_config_minor_version, $xml_config_micro_version);
+      return 1;
+    } 
+/* Compare the headers to the library to make sure we match */
+  /* Less than ideal -- doesn't provide us with return value feedback, 
+   * only exits if there's a serious mismatch between header and library.
+   */
+    LIBXML_TEST_VERSION;
+
+    /* Test that the library is greater than our minimum version */
+    if ((xml_major_version > major) ||
+        ((xml_major_version == major) && (xml_minor_version > minor)) ||
+        ((xml_major_version == major) && (xml_minor_version == minor) &&
+        (xml_micro_version >= micro)))
+      {
+        return 0;
+       }
+     else
+      {
+        printf("\n*** An old version of libxml (%d.%d.%d) was found.\n",
+               xml_major_version, xml_minor_version, xml_micro_version);
+        printf("*** You need a version of libxml newer than %d.%d.%d. The latest version of\n",
+           major, minor, micro);
+        printf("*** libxml is always available from ftp://ftp.xmlsoft.org.\n");
+        printf("***\n");
+        printf("*** If you have already installed a sufficiently new version, this error\n");
+        printf("*** probably means that the wrong copy of the xml2-config shell script is\n");
+        printf("*** being found. The easiest way to fix this is to remove the old version\n");
+        printf("*** of LIBXML, but you can also set the XML2_CONFIG environment to point to the\n");
+        printf("*** correct copy of xml2-config. (In this case, you will have to\n");
+        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
+        printf("*** so that the correct libraries are found at run-time))\n");
+    }
+  return 1;
+}
+],, no_xml=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CPPFLAGS="$ac_save_CPPFLAGS"
+       LIBS="$ac_save_LIBS"
+     fi
+  fi
+
+  if test "x$no_xml" = x ; then
+     AC_MSG_RESULT(yes (version $xml_config_major_version.$xml_config_minor_version.$xml_config_micro_version))
+     ifelse([$2], , :, [$2])     
+  else
+     AC_MSG_RESULT(no)
+     if test "$XML2_CONFIG" = "no" ; then
+       echo "*** The xml2-config script installed by LIBXML could not be found"
+       echo "*** If libxml was installed in PREFIX, make sure PREFIX/bin is in"
+       echo "*** your path, or set the XML2_CONFIG environment variable to the"
+       echo "*** full path to xml2-config."
+     else
+       if test -f conf.xmltest ; then
+        :
+       else
+          echo "*** Could not run libxml test program, checking why..."
+          CPPFLAGS="$CPPFLAGS $XML_CPPFLAGS"
+          LIBS="$LIBS $XML_LIBS"
+          AC_TRY_LINK([
+#include <libxml/xmlversion.h>
+#include <stdio.h>
+],      [ LIBXML_TEST_VERSION; return 0;],
+        [ echo "*** The test program compiled, but did not run. This usually means"
+          echo "*** that the run-time linker is not finding LIBXML or finding the wrong"
+          echo "*** version of LIBXML. If it is not finding LIBXML, you'll need to set your"
+          echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
+          echo "*** to the installed location  Also, make sure you have run ldconfig if that"
+          echo "*** is required on your system"
+          echo "***"
+          echo "*** If you have an old version installed, it is best to remove it, although"
+          echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH" ],
+        [ echo "*** The test program failed to compile or link. See the file config.log for the"
+          echo "*** exact error that occured. This usually means LIBXML was incorrectly installed"
+          echo "*** or that you have moved LIBXML since it was installed. In the latter case, you"
+          echo "*** may want to edit the xml2-config script: $XML2_CONFIG" ])
+          CPPFLAGS="$ac_save_CPPFLAGS"
+          LIBS="$ac_save_LIBS"
+       fi
+     fi
+
+     XML_CPPFLAGS=""
+     XML_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+  AC_SUBST(XML_CPPFLAGS)
+  AC_SUBST(XML_LIBS)
+  rm -f conf.xmltest
+])
diff --git a/src/Makefile.in b/src/Makefile.in
index da9b29cc..258fdb97 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -268,24 +268,26 @@ subdir = src
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in alloca.c
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/aria2_arg.m4 \
-	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/gettext.m4 \
-	$(top_srcdir)/m4/glibc2.m4 $(top_srcdir)/m4/glibc21.m4 \
-	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intdiv0.m4 \
-	$(top_srcdir)/m4/intl.m4 $(top_srcdir)/m4/intlmacosx.m4 \
-	$(top_srcdir)/m4/intmax.m4 $(top_srcdir)/m4/inttypes-pri.m4 \
+	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/cppunit.m4 \
+	$(top_srcdir)/m4/gettext.m4 $(top_srcdir)/m4/glibc2.m4 \
+	$(top_srcdir)/m4/glibc21.m4 $(top_srcdir)/m4/iconv.m4 \
+	$(top_srcdir)/m4/intdiv0.m4 $(top_srcdir)/m4/intl.m4 \
+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/intmax.m4 \
+	$(top_srcdir)/m4/inttypes-pri.m4 \
 	$(top_srcdir)/m4/inttypes_h.m4 $(top_srcdir)/m4/lcmessage.m4 \
 	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
 	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/libares.m4 \
 	$(top_srcdir)/m4/libcares.m4 $(top_srcdir)/m4/libexpat.m4 \
-	$(top_srcdir)/m4/libz.m4 $(top_srcdir)/m4/lock.m4 \
-	$(top_srcdir)/m4/longlong.m4 $(top_srcdir)/m4/nls.m4 \
-	$(top_srcdir)/m4/openssl.m4 $(top_srcdir)/m4/po.m4 \
-	$(top_srcdir)/m4/printf-posix.m4 $(top_srcdir)/m4/progtest.m4 \
-	$(top_srcdir)/m4/size_max.m4 $(top_srcdir)/m4/sqlite3.m4 \
-	$(top_srcdir)/m4/stdint_h.m4 $(top_srcdir)/m4/uintmax_t.m4 \
-	$(top_srcdir)/m4/visibility.m4 $(top_srcdir)/m4/wchar_t.m4 \
-	$(top_srcdir)/m4/wint_t.m4 $(top_srcdir)/m4/xsize.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/libgcrypt.m4 $(top_srcdir)/m4/libgnutls.m4 \
+	$(top_srcdir)/m4/libxml2.m4 $(top_srcdir)/m4/libz.m4 \
+	$(top_srcdir)/m4/lock.m4 $(top_srcdir)/m4/longlong.m4 \
+	$(top_srcdir)/m4/nls.m4 $(top_srcdir)/m4/openssl.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/printf-posix.m4 \
+	$(top_srcdir)/m4/progtest.m4 $(top_srcdir)/m4/size_max.m4 \
+	$(top_srcdir)/m4/sqlite3.m4 $(top_srcdir)/m4/stdint_h.m4 \
+	$(top_srcdir)/m4/uintmax_t.m4 $(top_srcdir)/m4/visibility.m4 \
+	$(top_srcdir)/m4/wchar_t.m4 $(top_srcdir)/m4/wint_t.m4 \
+	$(top_srcdir)/m4/xsize.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
diff --git a/test/Makefile.in b/test/Makefile.in
index d3a7a6fe..ea7e142b 100644
--- a/test/Makefile.in
+++ b/test/Makefile.in
@@ -144,24 +144,26 @@ subdir = test
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/aria2_arg.m4 \
-	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/gettext.m4 \
-	$(top_srcdir)/m4/glibc2.m4 $(top_srcdir)/m4/glibc21.m4 \
-	$(top_srcdir)/m4/iconv.m4 $(top_srcdir)/m4/intdiv0.m4 \
-	$(top_srcdir)/m4/intl.m4 $(top_srcdir)/m4/intlmacosx.m4 \
-	$(top_srcdir)/m4/intmax.m4 $(top_srcdir)/m4/inttypes-pri.m4 \
+	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/cppunit.m4 \
+	$(top_srcdir)/m4/gettext.m4 $(top_srcdir)/m4/glibc2.m4 \
+	$(top_srcdir)/m4/glibc21.m4 $(top_srcdir)/m4/iconv.m4 \
+	$(top_srcdir)/m4/intdiv0.m4 $(top_srcdir)/m4/intl.m4 \
+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/intmax.m4 \
+	$(top_srcdir)/m4/inttypes-pri.m4 \
 	$(top_srcdir)/m4/inttypes_h.m4 $(top_srcdir)/m4/lcmessage.m4 \
 	$(top_srcdir)/m4/lib-ld.m4 $(top_srcdir)/m4/lib-link.m4 \
 	$(top_srcdir)/m4/lib-prefix.m4 $(top_srcdir)/m4/libares.m4 \
 	$(top_srcdir)/m4/libcares.m4 $(top_srcdir)/m4/libexpat.m4 \
-	$(top_srcdir)/m4/libz.m4 $(top_srcdir)/m4/lock.m4 \
-	$(top_srcdir)/m4/longlong.m4 $(top_srcdir)/m4/nls.m4 \
-	$(top_srcdir)/m4/openssl.m4 $(top_srcdir)/m4/po.m4 \
-	$(top_srcdir)/m4/printf-posix.m4 $(top_srcdir)/m4/progtest.m4 \
-	$(top_srcdir)/m4/size_max.m4 $(top_srcdir)/m4/sqlite3.m4 \
-	$(top_srcdir)/m4/stdint_h.m4 $(top_srcdir)/m4/uintmax_t.m4 \
-	$(top_srcdir)/m4/visibility.m4 $(top_srcdir)/m4/wchar_t.m4 \
-	$(top_srcdir)/m4/wint_t.m4 $(top_srcdir)/m4/xsize.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/m4/libgcrypt.m4 $(top_srcdir)/m4/libgnutls.m4 \
+	$(top_srcdir)/m4/libxml2.m4 $(top_srcdir)/m4/libz.m4 \
+	$(top_srcdir)/m4/lock.m4 $(top_srcdir)/m4/longlong.m4 \
+	$(top_srcdir)/m4/nls.m4 $(top_srcdir)/m4/openssl.m4 \
+	$(top_srcdir)/m4/po.m4 $(top_srcdir)/m4/printf-posix.m4 \
+	$(top_srcdir)/m4/progtest.m4 $(top_srcdir)/m4/size_max.m4 \
+	$(top_srcdir)/m4/sqlite3.m4 $(top_srcdir)/m4/stdint_h.m4 \
+	$(top_srcdir)/m4/uintmax_t.m4 $(top_srcdir)/m4/visibility.m4 \
+	$(top_srcdir)/m4/wchar_t.m4 $(top_srcdir)/m4/wint_t.m4 \
+	$(top_srcdir)/m4/xsize.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs