CentOS: How to install libyaml-devel from source

I'm trying to install RVM in a CentOS server which for some weird reason I do not have access to internet.

One of its dependencies is the library libyaml-devel.

I already installed the libyaml downloaded from here: http://pyyaml.org/download/libyaml/. But it didn't solve the problem.

First:

Where do I find the official repository of libyaml-devel (Yes, I tried Google. I couldn't find it here: http://pyyaml.org/wiki)

Second:

Probably I will have other issues with other libs on this server. How to install other libs easily without internet access (and of course, without yum install)?

Edit:

• I'm using CentOS 6.5

Edit 2:

Using another machine, I downloaded libyaml-devel from 2 sources, moved to the server and tried install it, without success.

http://pkgs.repoforge.org/libyaml/libyaml-devel-0.1.4-1.el6.rf.x86_64.rpm

$ sudo rpm -Uvh libyaml-devel-0.1.4-1.el6.rf.x86_64.rpm
warning: libyaml-devel-0.1.4-1.el6.rf.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 6b8d79e6: NOKEY
error: Failed dependencies:
    libyaml = 0.1.4-1.el6.rf is needed by libyaml-devel-0.1.4-1.el6.rf.x86_64
    libyaml-0.so.2()(64bit) is needed by libyaml-devel-0.1.4-1.el6.rf.x86_64

ftp://195.220.108.108/linux/centos/6.7/os/x86_64/Packages/libyaml-devel-0.1.3-4.el6_6.x86_64.rpm

$ sudo rpm -Uvh libyaml-devel-0.1.3-4.el6_6.x86_64.rpm
error: Failed dependencies:
    libyaml = 0.1.3-4.el6_6 is needed by libyaml-devel-0.1.3-4.el6_6.x86_64