7/1/09 LATEST RUBY 1.9! Easy to change version number. More robust.

build_ruby19.sh

#!/bin/bash

set -e

RUBY_BASE="ruby-1.9.1-p129"
RUBY_URL="ftp://ftp.ruby-lang.org/pub/ruby/1.9/$RUBY_BASE.tar.bz2"

install_ruby19() {
  create_src_directory
  download_ruby19_source
  extract_source
  build_ruby19
}

create_src_directory() {
  mkdir -p /usr/local/src
}

download_ruby19_source() {
  (cd /usr/local/src && sudo curl -O $RUBY_URL)
}

extract_source() {
  (cd /usr/local/src && sudo tar -xjvf $RUBY_BASE.tar.bz2)
}

build_ruby19() {
  (cd /usr/local/src/$RUBY_BASE &&
    sudo ./configure --prefix=/usr --program-suffix=19 --enable-shared &&
    sudo make && sudo make install)
}

install_ruby19