+### Use libxml (-lxml2) if available
+if test "${with_xml2}" != "no"; then
+ ### I'm not sure what the version number should be, so I just guessed.
+
+ succeeded=no
+
+ # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_path_PKG_CONFIG+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $PKG_CONFIG in
+ [\\/]* | ?:[\\/]*)
+ ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+ ;;
+ *)
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+ test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"
+ ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+ if test "$PKG_CONFIG" = "no" ; then
+ HAVE_LIBXML2=no
+ else
+ PKG_CONFIG_MIN_VERSION=0.9.0
+ if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libxml-2.0 > 2.2.0" >&5
+$as_echo_n "checking for libxml-2.0 > 2.2.0... " >&6; }
+
+ if $PKG_CONFIG --exists "libxml-2.0 > 2.2.0" 2>&5; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ succeeded=yes
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking LIBXML2_CFLAGS" >&5
+$as_echo_n "checking LIBXML2_CFLAGS... " >&6; }
+ LIBXML2_CFLAGS=`$PKG_CONFIG --cflags "libxml-2.0 > 2.2.0"|sed -e 's,///*,/,g'`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIBXML2_CFLAGS" >&5
+$as_echo "$LIBXML2_CFLAGS" >&6; }
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking LIBXML2_LIBS" >&5
+$as_echo_n "checking LIBXML2_LIBS... " >&6; }
+ LIBXML2_LIBS=`$PKG_CONFIG --libs "libxml-2.0 > 2.2.0"|sed -e 's,///*,/,g'`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIBXML2_LIBS" >&5
+$as_echo "$LIBXML2_LIBS" >&6; }
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ LIBXML2_CFLAGS=""
+ LIBXML2_LIBS=""
+ ## If we have a custom action on failure, don't print errors, but
+ ## do set a variable so people can do so.
+ LIBXML2_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "libxml-2.0 > 2.2.0"`
+
+ fi
+
+
+
+ else
+ echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
+ echo "*** See http://www.freedesktop.org/software/pkgconfig"
+ fi
+ fi
+
+ if test $succeeded = yes; then
+ HAVE_LIBXML2=yes
+ else
+ HAVE_LIBXML2=no
+ fi
+
+ if test "${HAVE_LIBXML2}" = "yes"; then
+ LIBS="$LIBXML2_LIBS $LIBS"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for htmlReadMemory in -lxml2" >&5
+$as_echo_n "checking for htmlReadMemory in -lxml2... " >&6; }
+if test "${ac_cv_lib_xml2_htmlReadMemory+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lxml2 $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char htmlReadMemory ();
+int
+main ()
+{
+return htmlReadMemory ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_xml2_htmlReadMemory=yes
+else
+ ac_cv_lib_xml2_htmlReadMemory=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_xml2_htmlReadMemory" >&5
+$as_echo "$ac_cv_lib_xml2_htmlReadMemory" >&6; }
+if test "x$ac_cv_lib_xml2_htmlReadMemory" = x""yes; then :
+ HAVE_LIBXML2=yes
+else
+ HAVE_LIBXML2=no
+fi
+
+ if test "${HAVE_LIBXML2}" = "yes"; then
+
+$as_echo "#define HAVE_LIBXML2 1" >>confdefs.h
+
+ else
+ LIBXML2_LIBS=""
+ LIBXML2_CFLAGS=""
+ fi
+ fi
+fi
+
+
+