cannot "make USE_PGXS=1" b/c no pgxs.mk exists

Greetings
I'm trying to set up Cybertec's ODBC_LINK program
(http://www.cybertec.at/download/odbc_link/2010_03_16_odbc_link.pdf )
so I can read MS-SQL data into my Postgresql 8.4.8 database. I'm using
Ubuntu 10.04 LTS Server.

Their build instructions say to Compile the module using make USE_PGXS=1.
When I run that I get:

postgres(at)dev-postgres-1:~/ODBC-Link-1.0.4$ make USE_PGXS=1
Makefile:12: /usr/lib/postgresql/8.4/lib/pgxs/src/makefiles/pgxs.mk: No such
file or directory
make: *** No rule to make target
`/usr/lib/postgresql/8.4/lib/pgxs/src/makefiles/pgxs.mk'. Stop.
postgres(at)dev-postgres-1:~/ODBC-Link-1.0.4$

My pg_config says:
postgres(at)dev-postgres-1:~/ODBC-Link-1.0.4$ pg_config
BINDIR = /usr/lib/postgresql/8.4/bin
DOCDIR = /usr/share/doc/postgresql
HTMLDIR = /usr/share/doc/postgresql
INCLUDEDIR = /usr/include/postgresql
PKGINCLUDEDIR = /usr/include/postgresql
INCLUDEDIR-SERVER = /usr/include/postgresql/8.4/server
LIBDIR = /usr/lib
PKGLIBDIR = /usr/lib/postgresql/8.4/lib
LOCALEDIR = /usr/share/locale
MANDIR = /usr/share/postgresql/8.4/man
SHAREDIR = /usr/share/postgresql/8.4
SYSCONFDIR = /etc/postgresql-common
PGXS = /usr/lib/postgresql/8.4/lib/pgxs/src/makefiles/pgxs.mk
CONFIGURE = '--build=i486-linux-gnu' '--prefix=/usr'
'--includedir=/usr/include' '--mandir=/usr/share/man'
'--infodir=/usr/share/info' '--sysconfdir=/etc' '--localstatedir=/var'
'--libexecdir=/usr/lib/postgresql-8.4' '--disable-maintainer-mode'
'--disable-dependency-tracking' '--disable-silent-rules' '--srcdir=.'
'--mandir=/usr/share/postgresql/8.4/man'
'--with-docdir=/usr/share/doc/postgresql-doc-8.4'
'--sysconfdir=/etc/postgresql-common' '--datadir=/usr/share/postgresql/8.4'
'--bindir=/usr/lib/postgresql/8.4/bin'
'--includedir=/usr/include/postgresql/' '--enable-nls'
'--enable-integer-datetimes' '--enable-thread-safety' '--enable-debug'
'--disable-rpath' '--with-tcl' '--with-perl' '--with-python' '--with-pam'
'--with-krb5' '--with-gssapi' '--with-openssl' '--with-libxml'
'--with-libxslt' '--with-ldap' '--with-ossp-uuid' '--with-gnu-ld'
'--with-tclconfig=/usr/lib/tcl8.5' '--with-tkconfig=/usr/lib/tk8.5'
'--with-includes=/usr/include/tcl8.5'
'--with-system-tzdata=/usr/share/zoneinfo' '--with-pgport=5432' 'CFLAGS=-g
-O2 -g -Wall -O2 -fPIC' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,--as-needed'
'build_alias=i486-linux-gnu' 'CPPFLAGS='
CC = gcc
CPPFLAGS = -D_GNU_SOURCE -I/usr/include/libxml2 -I/usr/include/tcl8.5
CFLAGS = -g -O2 -g -Wall -O2 -fPIC -Wall -Wmissing-prototypes
-Wpointer-arith -Wdeclaration-after-statement -Wendif-labels
-fno-strict-aliasing -fwrapv -g
CFLAGS_SL = -fpic
LDFLAGS = -Wl,-Bsymbolic-functions -Wl,--as-needed -Wl,--as-needed
LDFLAGS_SL =
LIBS = -lpgport -lxslt -lxml2 -lpam -lssl -lcrypto -lkrb5 -lcom_err
-lgssapi_krb5 -lz -lreadline -lcrypt -ldl -lm
VERSION = PostgreSQL 8.4.8

I had to manually install the libpq-dev library and manually create a folder
for ' /usr/lib/postgresql/8.4/lib/pgxs/src/makefiles/" but I don't have a
pgxs.mk file to paste into that "makefiles" folder.

Why are the PGXS files / folders not automatically created for me?

If someone knows an easier way to read directly from a MS-SQL table or view
into a Postgres function I'd love to know about it!

Help!