can't build: ./configure: line 13767: syntax error near unexpected token `LIBXML,'

[eroux]

When running ./autogen.sh after a fresh git clone on a Debian Sid I'm getting:

./autogen.sh 
I am going to run ./configure with no arguments - if you wish 
to pass any to it, please specify them on the ./autogen.sh command line.
Running libtoolize...
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
Running aclocal...
Running autoheader...
Running autoconf...
Running automake...
configure.ac:36: installing './compile'
configure.ac:13: installing './config.guess'
configure.ac:13: installing './config.sub'
configure.ac:24: installing './install-sh'
configure.ac:24: installing './missing'
apps/Makefile.am: installing './depcomp'
Running autoconf...
Running configure --enable-maintainer-mode ...
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
[....]
checking for development environment... no
checking for man pages build... no
checking for docs build... no
checking for __FUNCTION__ or __func__... __func__
checking size of size_t... 8
checking for pkg-config... yes
./configure: line 13767: syntax error near unexpected token `LIBXML,'
./configure: line 13767: `    PKG_CHECK_MODULES(LIBXML, libxml-2.0 >= $LIBXML_MIN_VERSION,'

Now type 'make' to compile xmlsec.

Note that pkg-config is installed and running

[eroux]

Sorry, my mistake, aclocal seem to be buggly configured these days...