attempting to install tds_fw-master on redhat

The following postgresql rpm is installed ..

rpm -qil postgresql-server-9.2.13-1.el7_1.x86_64

on redhat 7

Red Hat Enterprise Linux Server release 7.1 (Maipo)

Currently following the instructions at the following link in attempt to create the extension:

https://github.com/GeoffMontee/tds_fdw/blob/master/InstallCentOS.md

[root@scsblnx-994457 tds_fdw-master]# echo $PATH

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin

[root@scsblnx-994457 tds_fdw-master]# make USE_PXGS=1 install

Makefile:53: /usr/lib64/pgsql/pgxs/src/makefiles/pgxs.mk: No such file or direcy

make: *** No rule to make target `/usr/lib64/pgsql/pgxs/src/makefiles/pgxs.mk'..

[root@scsblnx-994457 tds_fdw-master]#

Any ideas?