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Ruby インストール(mac)

Ruby インストール(mac

Homebrewのインストール

Homebrew はインストールが済んでいる前提で説明します。 下記記事の Homebrew インストール説明部分を参照してください。 Javascript(Node.js) 開発環境の構築 - ifujimori’s blog

rbenv のインストール

brew install を使って rbenvをインストーする。

brew install rbenv ruby-build
~ $ brew install rbenv ruby-build
-bash: rew: command not found
~ $ brew install rbenv ruby-build
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
==> Updated Formulae
ammonite-repl            gitlab-ci-multi-runner   mcabber                  tin
apktool                  groonga                  pgformatter              vapoursynth
caddy                    influxdb                 prometheus               vim
collectd                 kapacitor                pushpin                  youtube-dl
dnscrypt-proxy           khal                     qbs
extract_url              libosmium                stormpath-cli
fzf                      link-grammar             telegraf

==> Installing dependencies for rbenv: autoconf, pkg-config, openssl, ruby-build
==> Installing rbenv dependency: autoconf
==> Downloading https://homebrew.bintray.com/bottles/autoconf-2.69.sierra.bottle.4.tar.gz
######################################################################## 100.0%
==> Pouring autoconf-2.69.sierra.bottle.4.tar.gz
==> Caveats
Emacs Lisp files have been installed to:
  /usr/local/share/emacs/site-lisp/autoconf
==> Summary
🍺  /usr/local/Cellar/autoconf/2.69: 70 files, 3.0M
==> Installing rbenv dependency: pkg-config
==> Downloading https://homebrew.bintray.com/bottles/pkg-config-0.29.1_2.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring pkg-config-0.29.1_2.sierra.bottle.tar.gz
🍺  /usr/local/Cellar/pkg-config/0.29.1_2: 10 files, 627.5K
==> Installing rbenv dependency: openssl
==> Downloading https://homebrew.bintray.com/bottles/openssl-1.0.2j.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring openssl-1.0.2j.sierra.bottle.tar.gz
==> Using the sandbox
==> Caveats
A CA file has been bootstrapped using certificates from the SystemRoots
keychain. To add additional certificates (e.g. the certificates added in
the System keychain), place .pem files in
  /usr/local/etc/openssl/certs

and run
  /usr/local/opt/openssl/bin/c_rehash

This formula is keg-only, which means it was not symlinked into /usr/local.

Apple has deprecated use of OpenSSL in favor of its own TLS and crypto libraries

Generally there are no consequences of this for you. If you build your
own software and it requires this formula, you'll need to add to your
build variables:

    LDFLAGS:  -L/usr/local/opt/openssl/lib
    CPPFLAGS: -I/usr/local/opt/openssl/include
    PKG_CONFIG_PATH: /usr/local/opt/openssl/lib/pkgconfig

==> Summary
🍺  /usr/local/Cellar/openssl/1.0.2j: 1,695 files, 12M
==> Installing rbenv dependency: ruby-build
==> Downloading https://github.com/rbenv/ruby-build/archive/v20170112.tar.gz
==> Downloading from https://codeload.github.com/rbenv/ruby-build/tar.gz/v20170112
######################################################################## 100.0%
==> ./install.sh
🍺  /usr/local/Cellar/ruby-build/20170112: 325 files, 174.5K, built in 6 seconds
==> Installing rbenv
==> Downloading https://homebrew.bintray.com/bottles/rbenv-1.1.0.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring rbenv-1.1.0.sierra.bottle.tar.gz
==> Caveats
Rbenv stores data under ~/.rbenv by default. If you absolutely need to
store everything under Homebrew's prefix, include this in your profile:
  export RBENV_ROOT=/usr/local/var/rbenv

To enable shims and autocompletion, run this and follow the instructions:
  rbenv init
==> Summary
🍺  /usr/local/Cellar/rbenv/1.1.0: 36 files, 63.2K

rbenv が正しくインストールできたか、バージョンを確認

~ $ rbenv -v
rbenv 1.1.0

インストール可能な ruby のバージョンの一覧を表示

rbenv install -l

バージョン 2.4.0 の ruby をインストール

rbenv install 2.4.0
~ $ rbenv install 2.4.0
ruby-build: use openssl from homebrew
Downloading ruby-2.4.0.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.0.tar.bz2
Installing ruby-2.4.0...
Installed ruby-2.4.0 to /Users/fujimori/.rbenv/versions/2.4.0

インストールされたことを rbenv versions で確認

~ $ rbenv versions
* system (set by /Users/fujimori/.rbenv/version)
  2.4.0

PATH に下記ディレクトリを追加する(.bash_profile にて追加)

/Users/[ユーザー名]/.rbenv/shims

rbenv global にて ruby をインストールしたバージョンに切り替える

rbenv global 2.4.0

ruby のバージョンの確認

~ $ ruby -v
ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-darwin16]