CentOS 6.3 Chef-Solo Bootstrap - Ruby1.9.3 + libyaml

centos6.3-chef-solo-bootstrap.sh

#! /bin/bash

#####################
# Run this as root! #
#####################

yum update

yum groupinstall "Development Tools"
yum install zlib-devel readline-devel openssl-devel

cd /tmp

# Compile libyaml
wget http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz
tar xzvf yaml-0.1.4.tar.gz
cd yaml-0.1.4
./configure --prefix=/usr/local

cd ..

# Compile Ruby
wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p194.tar.gz
tar xzvf ruby-1.9.3-p194.tar.gz
cd ruby-1.9.3-p194
./configure --prefix=/usr/local --enable-shared --disable-install-doc --with-opt-dir=/usr/local/lib
make
make install
ruby -v # Check to see that it worked

# No RI or RDoc
echo -e "install: --no-rdoc --no-ri\nupdate:  --no-rdoc --no-ri" > /etc/gemrc

# Update Gems
gem update

# Install chef-solo
gem install chef ruby-shadow

# Setup Chef
mkdir /var/chef
cd /var/chef

You seem to be missing make/make install after your configure step at line 18