mac上でbundle installした時に、以下のようなエラーが出て失敗する事がある
Fetching mysql2 0.5.3 Installing mysql2 0.5.3 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /Users/mapyo/tmp/mysql2_sample/vendor/bundle/ruby/2.6.0/gems/mysql2-0.5.3/ext/mysql2 /Users/mapyo/.anyenv/envs/rbenv/versions/2.6.4/bin/ruby -I /Users/mapyo/.anyenv/envs/rbenv/versions/2.6.4/lib/ruby/2.6.0 -r ./siteconf20200113-35739-1ltnc8d.rb extconf.rb checking for rb_absint_size()... yes checking for rb_absint_singlebit_p()... yes checking for rb_wait_for_single_fd()... yes checking for -lmysqlclient... no ----- mysql client is missing. You may need to 'brew install mysql' or 'port install mysql', and try again. ----- *** 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 --without-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=/Users/mapyo/.anyenv/envs/rbenv/versions/2.6.4/bin/$(RUBY_BASE_NAME) --with-mysql-dir --without-mysql-dir --with-mysql-include --without-mysql-include=${mysql-dir}/include --with-mysql-lib --without-mysql-lib=${mysql-dir}/lib --with-mysql-config --without-mysql-config --with-mysql-dir --without-mysql-dir --with-mysql-include --without-mysql-include=${mysql-dir}/include --with-mysql-lib --without-mysql-lib=${mysql-dir}/lib --with-mysqlclientlib --without-mysqlclientlib To see why this extension failed to compile, please check the mkmf.log which can be found here: /Users/mapyo/tmp/mysql2_sample/vendor/bundle/ruby/2.6.0/extensions/x86_64-darwin-17/2.6.0-static/mysql2-0.5.3/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /Users/mapyo/tmp/mysql2_sample/vendor/bundle/ruby/2.6.0/gems/mysql2-0.5.3 for inspection. Results logged to /Users/mapyo/tmp/mysql2_sample/vendor/bundle/ruby/2.6.0/extensions/x86_64-darwin-17/2.6.0-static/mysql2-0.5.3/gem_make.out An error occurred while installing mysql2 (0.5.3), and Bundler cannot continue. Make sure that `gem install mysql2 -v '0.5.3' --source 'https://rubygems.org/'` succeeds before bundling. In Gemfile: mysql2
対応方法としては、--with-mysql-config
のオプションを指定して、bundle configを実行してあげればよかった。。(パスは各自適切な場所になおしてください)
bundle config --local build.mysql2 "--with-mysql-config=/usr/local/opt/mysql@5.7/bin/mysql_config"
オプションは、これを1つだけ指定しないとうまくいかなかった。
最初はwith-mysql-dir
などを雑につけてみて試してみていたのだが、それだとbundle installは成功するがその後実際に使う場所でエラーが出てしまった。。。
mysqlの最新のバージョンじゃないものをbrewで入れていて、それを使いたかったからこういうエラーが出てしまうのかもしれない。
というか、READMEをよくみてみるとちゃんと説明が書いてあったので、それを読めばすぐわかったのかもしれない。。