configure error

I am trying to build libxfce4util from the sources (on libxfce4util@9dd7973f), using this environment variables (also tried without them with the same result):

export PREFIX=/usr/local
export  \
  CFLAGS="-O2 -pipe" \
  PKG_CONFIG_PATH="${PREFIX}/lib/pkgconfig:$PKG_CONFIG_PATH" \
  XDG_DATA_DIRS="$PREFIX/share:$XDG_DATA_DIRS"

Also i have compiled xfce4-dev-tools here

me@host:~$ ls /usr/local/bin/x*
/usr/local/bin/xdt-autogen  /usr/local/bin/xfce-build       /usr/local/bin/xfce-get-release-notes  /usr/local/bin/xfce-update-news
/usr/local/bin/xdt-csource  /usr/local/bin/xfce-do-release  /usr/local/bin/xfce-get-translations

me@host:~$ xdt-autogen --version
xdt-autogen 4.19.0

When i run

./autogen.sh --prefix=${PREFIX}

from sources i get this:

Running /usr/local/src/libxfce4util/configure --enable-maintainer-mode --prefix=/usr/local...
./configure: line 2717: syntax error near unexpected token `('
./configure: line 2717: `LIBXFCE4UTIL_VERSION=xdt_version()'

Please explain what i do wrong?