This information is to build postgresql 9.1.X on a Redhat6 machine.  postgresql9.1 will not officially be in a distro until Redhat7 and SLES 12, so for PCM to use it we need to build for the current Redhat6.3 which we will release xCAT/PCM produce.

1) Need to install rpmbuild from the disto and gcc on  your build machine
2)Must have uuid_devel, did  not see to be in the Redhat6.3 distro.  
I downloaded  from 
  http://pkgs.org/centos-6-rhel-6/centos-rhel-x86_64/uuid-devel-1.6.1-10.el6.x86_64.rpm/download/
 rpm -ivn uuid-devel-1.6.1-10.el6.x86_64.rpm 

3) Use the below website to download src rpms for postgresql91.  I picked the latest
PTF level 9.1.5.
http://yum.postgresql.org/srpms/9.1/redhat/rhel-6-x86_64/
From here I got postgresql91-9.1.5-1PGDG.rhel6.src.rpm

4)Run rpm -ivh postgresql91-9.1.5-1PGDG.rhel6.src.rpm to install the source rpms no the build machine. 


5)When  you installed the source rpm, it put the data in /root/rpmbuild
cd /root/rpmbuild/SPECS
cp postgresql-9.1.spec postgresql-9.1.spec.org
We have modified the spec that Fedora16 used to build postgresql91, so 
that all the commands and code will go in the normal locations and provide 
that spec here
cp postgresql-9.1.spec provided by xCAT  in this directory to /root/rpmbuild/SPECS 

6)If not building 9.1.5-1 then modifiy  /root/rpmbuild/SPECS/postgresql-9.1.spec and change the VERSION:   and RELEASE: line to match your level of postgresql.

6) build  the rpms
rpmbuild -ba postgresql-9.1.spec