title: how to install postgresql in oracle linux 7.2
body: <p>I'm trying to work with postgresql but i had these problems when I tried to install it in Oracle Linux 7.2 kernel 3.10.0-327</p>
  
  <p>after using this command to compile the source:</p>
  
  <p>./configure --with-openssl</p>
  
  <p>I have this error:</p>
  
  <pre><code>checking for main in -lm... yes
  checking for library containing setproctitle... no
  checking for library containing dlopen... -ldl
  checking for library containing socket... none required
  checking for library containing shl_load... no
  checking for library containing getopt_long... none required
  checking for library containing crypt... -lcrypt
  checking for library containing shm_open... -lrt
  checking for library containing shm_unlink... none required
  checking for library containing fdatasync... none required
  checking for library containing sched_yield... none required
  checking for library containing gethostbyname_r... none required
  checking for library containing shmget... none required
  checking for library containing readline... no
  configure: error: readline library not found
  If you have readline already installed, see config.log for details on the
  failure.  It is possible the compiler isn't looking in the proper directory.
  Use --without-readline to disable readline support.
  [root@localhost postgresql-9.5.1]# brew
  bash: brew: command not found...
  [root@localhost postgresql-9.5.1]# find readline
  find: ‘readline’: No such file or directory
  [root@localhost postgresql-9.5.1]# yum install readline
  Loaded plugins: langpacks, ulninfo
  </code></pre>
  
  <p>pgdg95                                                                                                                                                        | 3.6 kB  00:00:00<br>
  (1/2): pgdg95/7Server/x86_64/group_gz                                                                                                                         |  333 B  00:00:00<br>
  (2/2): pgdg95/7Server/x86_64 /primary_db                                                                                                                       | 127 kB  00:00:00     </p>
  
  <pre><code>Package readline-6.2-9.el7.x86_64 already installed and latest version
  Nothing to do
  [root@localhost postgresql-9.5.1]#
  </code></pre>
  
  <p>readline is already installed , i do not understand why i have the problem</p>