Cstore_fdw issue.

Hi,I am new to PostgreSQL, successfully installed PGSql v12.2 on my CentOS 7 machine and I am trying to install cstore_fdw.
    1. I have managed to run this command;
        sudo yum install protobuf-c-devel
    2. Per the instructions I am followin;
        Once you have protobuf-c installed on your machine, you are ready to build cstore_fdw. For this, you need to include the pg_config directory path in your make command. 

    3. I have searched for pg_config directory and found 2 locations;
        /usr/bin/pg_config        /usr/pgsql-12/bin/pg_config        4. However when I try to run makefile in c_store_fdw I get this error;
        [postgres(at)dart-centos cstore_fdw]$ sudo PATH=/usr/bin/:$PATH make        [sudo] password for postgres:         Makefile:50: *** PostgreSQL 9.3 to 12 is required to compile this extension.  Stop.
        I even tried the other path, same error;        [postgres(at)dart-centos cstore_fdw]$ PATH=/usr/pgsql-12/bin/:$PATH make        Makefile:50: *** PostgreSQL 9.3 to 12 is required to compile this extension.  Stop.

    5. PostgreSQL Version        postgres=# show server_version;        server_version         ----------------     12.2     (1 row)
    postgres=# \! psql -V    psql (PostgreSQL) 12.2
May you please assist me with this issue.  
Thank You,Moses