yum -y groupinstall “Development Tools”
yum -y install rpm-build openjade linuxdoc-tools openldap-devel pam-devel openssl-devel httpd rpm-devel expat-devel db4-devel libpcap-devel

For Centos : rpm -ihv http://www.jur-linux.com/rpms/el-updates/5Client/SRPMS/squid-3.1.0.15-2.el5.src.rpm
For Fedora : rpm -ihv http://www.jur-linux.com/rpms/el-updates/5Client/SRPMS/squid-3.1.0.15-2.fc13.src.rpm

cd /usr/src/redhat/SPECS
rpmbuild -bb squid.spec
rpm -Uhv /usr/src/redhat/RPMS/i386/squid-3.1.0.15-2.i386.rpm