Ruby 2.3.0 on Cygwin x64

ruby-2.3.0-cygwin-x64.md

Installing Ruby 2.3.0 on Cygwin x64

Warning!

You won't get a fully-functional installation! At the time of writing, it turned out gem is kind of broken on Ruby 2.3.0. Ruby gem installation fails with an error like kernel_require.rb:54:in require': cannot load such file -- win32/resolv`.

Prerequisites

• Cygwin x64
• apt-cyg

Installation

Install essential packages

The following packages should be installed with apt-cyg:

• git
• gcc-core
• gcc-g++
• make
• zlib-devel
• curl
• autoconf
• libiconv
• libiconv-devel
• rsync
• patch
• unzip
• openssh
• openssl-devel
• libxml2-devel
• libxslt-devel
• libffi-devel
• libgdbm-devel
• libreadline-devel

Install rbenv

Install rbenv and ruby-build as usual.

Build Ruby 2.3.0

$ rbenv install 2.3.0
$ rbenv global 2.3.0
$ rbenv rehash

To check, run ruby -v. You will get something like that:

ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-cygwin]

Here is the correct way to fix the issue: https://gist.github.com/panyamin/8d7c03cfbf8d558b1e3f
See https://bugs.ruby-lang.org/issues/12071

Had to do following to make it work:

$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.zshenv
$ echo 'eval "$(rbenv init -)"' >> ~/.zshenv
$ echo 'source $HOME/.zshenv' >> ~/.zshrc
$ exec $SHELL