configure: error: header file is required for XML support

Hi there,

I try to configure postgres:

/configure --prefix=/usr/local/postgresql-8.4.4/ \
--without-docdir \
--with-openssl \
--with-libxml \
--with-libxslt \
--with-libraries=/usr/local/openssl:/lib:/lib64:/usr/local/readline/lib:/usr/local/zlib/lib:/usr/local/openssl/lib64:/usr/local/libxml2/lib:/usr/local/libxslt/lib \
--with-includes=/usr/local/readline/include:/usr/local/zlib/include:/usr/local/openssl/include:/usr/local/libxml2/include/libxml2/libxml:/usr/local/libxslt/include

Now even though parser.h can be found in the includes path it claims:

configure: error: header file <libxml/parser.h> is required for XML support


Any idea ?

Thanks Peter