rbenv (Simple Ruby Version Management) lets you easily switch between multiple versions of Ruby. It's simple, unobtrusive, and follows the UNIX tradition of single-purpose tools that do one thing well.
Another tool to be used for the same purpose is RVM.
Install the AUR package.
rbenv can be extended via a plugin system, and the rbenv wiki includes a list of useful plugins. The ruby-build plugin is especially useful, as it allows you to install Ruby versions with the
rbenv install command. You can install AUR from the AUR.
Before compiling, make sure you have all the dependencies needed:
pacman -S --needed base-devel libffi libyaml openssl zlib
Installation of Ruby 2.3.x may break down due to openssl version described here:
ossl_ssl.c:465:38: error: ‘CRYPTO_LOCK_SSL_SESSION’ undeclared
Here is a way how you can make a ruby compile:
1. Install the package first.
2. Then run:
PKG_CONFIG_PATH=/usr/lib/openssl-1.0/pkgconfig \ rbenv install 2.3.4
Installation of Ruby 2.0.0, 2.1.4, 2.1.6, 2.1.7, 2.2.2 and 2.2.3 may show this error
ossl_ssl.c:141:27: error: ‘SSLv3_method’ undeclared here (not in a function)
This can be solved using the patch as described here
curl -fsSL https://gist.github.com/mislav/055441129184a1512bb5.txt | PKG_CONFIG_PATH=/usr/lib/openssl-1.0/pkgconfig rbenv install --patch 2.2.3
Installation of Ruby 1.9.3 may show the same error:
ossl_ssl.c:116:27: error: ‘SSLv3_method’ undeclared here (not in a function)
This can be solved by using the patch as described here
curl -fsSL https://gist.githubusercontent.com/anonymous/679228bc324d6fdd3074.txt | rbenv install --patch 1.9.3-p448
If above was not enough you can install openssl-1.0 and gcc6 and try:
curl -fsSL https://gist.githubusercontent.com/anonymous/679228bc324d6fdd3074.txt | CC=/usr/bin/gcc-6 PKG_CONFIG_PATH=/usr/lib/openssl-1.0/pkgconfig rbenv install --patch 1.9.3-p551