Ruby

CRuby or MRI (Matz's Ruby Implementation), is the defacto Ruby and sets the standards for other Ruby implementations.

Requirements

Operating System	Command
Debian / Ubuntu	sudo apt-get install -y build-essential bison zlib1g-dev libyaml-dev libssl-dev libgdbm-dev libreadline-dev libffi-dev
RedHat / Fedora	sudo dnf install -y gcc automake bison zlib-devel libyaml-devel openssl-devel gdbm-devel readline-devel libffi-devel
openSUSE	sudo zypper install gcc automake bison gdbm-devel libffi-devel libyaml-devel openssl-devel readline-devel zlib-devel
Arch Linux	sudo pacman -S gcc make bison zlib openssl readline libyaml gdbm libffi
FreeBSD	sudo pkg install bison gdbm libffi libyaml openssl readline
NetBSD	sudo pkgin -y install bison gdbm libffi libyaml openssl readline
macOS	Install Homebrew brew install automake bison openssl readline libyaml gdbm libffi
Alpine Linux	sudo apk add gcc g++ make linux-headers zlib-dev gdbm-dev openssl-dev readline-dev

Installation

Note: MRI requires OpenSSL >= 1.0.1.

wget https://cache.ruby-lang.org/pub/ruby/2.7/ruby-2.7.2.tar.bz2
tar -xjvf ruby-2.7.2.tar.bz2
cd ruby-2.7.2
./configure --prefix=/opt/rubies/ruby-2.7.2
make
sudo make install

Note: macOS users must update their OpenSSL CA cert bundle and properly set ./configure --with-opt-dir to compile against Homebrew's libraries:

curl --remote-name https://cache.ruby-lang.org/pub/ruby/2.7/ruby-2.7.2.tar.bz2
tar -xjvf ruby-2.7.2.tar.bz2
cd ruby-2.7.2
./configure --prefix="$HOME/.rubies/ruby-2.7.2" --with-opt-dir="$(brew --prefix openssl):$(brew --prefix readline):$(brew --prefix libyaml):$(brew --prefix gdbm):$(brew --prefix libffi)"
make -j2
make install