Mac で Rails を使う
Mac ( OS X ) に Rails をインストールしようとするといつもコケるのでメモ
前提
$ brew -v Homebrew 0.9.5 $ ruby -v ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-darwin14]
よくあるエラー
Building native extensions. This could take a while... ERROR: Error installing rails: ERROR: Failed to build gem native extension. /usr/local/opt/ruby/bin/ruby -r ./siteconf20150421-1193-63p9ed.rb extconf.rb checking if the C compiler accepts ... yes checking if the C compiler accepts -Wno-error=unused-command-line-argument-hard-error-in-future... no Building nokogiri using packaged libraries. ----- The file "/usr/include/iconv.h" is missing in your build environment, which means you haven't installed Xcode Command Line Tools properly. To install Command Line Tools, try running `xcode-select --install` on terminal and follow the instructions. If it fails, open Xcode.app, select from the menu "Xcode" - "Open Developer Tool" - "More Developer Tools" to open the developer site, download the installer for your OS version and run it. ----- *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/local/Cellar/ruby/2.2.2/bin/$(RUBY_BASE_NAME) --help --clean --use-system-libraries --enable-static --disable-static --with-zlib-dir --without-zlib-dir --with-zlib-include --without-zlib-include=${zlib-dir}/include --with-zlib-lib --without-zlib-lib=${zlib-dir}/lib --enable-cross-build --disable-cross-build extconf failed, exit code 1 Gem files will remain installed in /usr/local/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2 for inspection. Results logged to /usr/local/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-14/2.2.0/nokogiri-1.6.6.2/gem_make.out
要は nokogiri が入らないわけです。
(あと xcode-select --install
もやれって言われているような... )
手順
必要なものをインストール
# とりあえず言われたことをやりましょう $ xcode-select --install $ brew tap homebrew/dupes $ brew install libxml2 libxslt $ brew install libiconv
nokogiri だけ先にインストール
いろいろ試してダメダメだったので調べてたらこんなのを見つけたので試したら通りました。
https://github.com/sparklemotion/nokogiri/issues/1210#issuecomment-67758774
# まずは nokogiri をなんとかインストール $ gem install nokogiri -- --use-system-libraries --with-xml2-include=/usr/include/libxml2 --with-xml2- lib=/usr/lib/ # rails をインストール $ gem install rails
できました
$ rails -v
Rails 4.2.1