Q&A
エラーメッセージは、簡単な英文なので、読みましょう。
前提・実現したいこと
bundle installしようとしたらmysql2がインストールされないという事態が発生した。
発生している問題・エラーメッセージ
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.
該当のソースコード
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`. Fetching gem metadata from https://rubygems.org/............ Fetching gem metadata from https://rubygems.org/. Resolving dependencies... Using rake 13.0.1 Following files may not be writable, so sudo is needed: /Library/Ruby/Gems/2.6.0 /Library/Ruby/Gems/2.6.0/build_info /Library/Ruby/Gems/2.6.0/cache /Library/Ruby/Gems/2.6.0/doc /Library/Ruby/Gems/2.6.0/extensions /Library/Ruby/Gems/2.6.0/gems /Library/Ruby/Gems/2.6.0/specifications Using concurrent-ruby 1.1.6 Using i18n 1.8.2 Using minitest 5.14.0 Using thread_safe 0.3.6 Using tzinfo 1.2.6 Using activesupport 5.2.4.1 Using builder 3.2.4 Using erubi 1.9.0 Using mini_portile2 2.4.0 Using nokogiri 1.10.8 Using rails-dom-testing 2.0.3 Using crass 1.0.6 Using loofah 2.4.0 Using rails-html-sanitizer 1.3.0 Using actionview 5.2.4.1 Using rack 2.2.2 Using rack-test 1.1.0 Using actionpack 5.2.4.1 Using nio4r 2.5.2 Using websocket-extensions 0.1.4 Using websocket-driver 0.7.1 Using actioncable 5.2.4.1 Using globalid 0.4.2 Using activejob 5.2.4.1 Using mini_mime 1.0.2 Using mail 2.7.1 Using actionmailer 5.2.4.1 Using activemodel 5.2.4.1 Using arel 9.0.0 Using activerecord 5.2.4.1 Using mimemagic 0.3.4 Using marcel 0.3.3 Using activestorage 5.2.4.1 Using public_suffix 4.0.3 Using addressable 2.7.0 Using io-like 0.3.1 Using archive-zip 0.12.0 Using bcrypt 3.1.13 Using bindex 0.8.1 Using msgpack 1.3.3 Using bootsnap 1.4.5 Using bundler 2.1.4 Using byebug 11.1.1 Using regexp_parser 1.7.0 Using xpath 3.2.0 Using capybara 3.31.0 Using childprocess 3.0.0 Using chromedriver-helper 2.1.1 Using chunky_png 1.3.11 Using coderay 1.1.2 Using coffee-script-source 1.12.2 Using execjs 2.7.0 Using coffee-script 2.4.1 Using method_source 0.9.2 Using thor 1.0.1 Using railties 5.2.4.1 Using coffee-rails 4.2.2 Using multi_json 1.14.1 Using sass 3.4.25 Using compass-core 1.0.3 Using compass-import-once 1.0.5 Using rb-fsevent 0.10.3 Using ffi 1.12.2 Using rb-inotify 0.10.1 Using compass 1.0.3 Using sprockets 3.7.2 Using sprockets-rails 3.2.1 Using tilt 2.0.10 Using sass-rails 5.0.8 Using compass-rails 3.1.0 Using orm_adapter 0.5.0 Using responders 3.0.0 Using warden 1.2.8 Using devise 4.7.1 Using jbuilder 2.10.0 Using kaminari-core 1.2.0 Using kaminari-actionview 1.2.0 Using kaminari-activerecord 1.2.0 Using kaminari 1.2.0 Using ruby_dep 1.5.0 Using listen 3.1.5 Fetching mysql2 0.5.3 Your user account isn't allowed to install to the system RubyGems. You can cancel this installation and run: bundle install --path vendor/bundle to install the gems into ./vendor/bundle/, or you can enter your password and install the bundled gems to RubyGems using sudo. Password: Installing mysql2 0.5.3 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /private/var/folders/t1/24y7lj016md7m0gxdts9c1t00000gn/T/bundler20200405-31805-14pkgzhmysql2-0.5.3/gems/mysql2-0.5.3/ext/mysql2 /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20200405-31805-aee2vn.rb extconf.rb --with-ldflags\=-L/usr/local/opt/openssl/lib checking for rb_absint_size()... *** 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=/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/$(RUBY_BASE_NAME) /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/tmpdir.rb:89:in `mkdir': No such file or directory @ dir_s_mkdir - /var/folders/c9/yt_mxkkn4sz69h6d2rp7gds00000gn/T/mkmf_20200405-31819-n9mezs (Errno::ENOENT) from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/tmpdir.rb:89:in `block in mktmpdir' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/tmpdir.rb:135:in `create' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/tmpdir.rb:87:in `mktmpdir' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:543:in `try_link0' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:570:in `try_link' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:782:in `try_func' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1069:in `block in have_func' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_for' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in postpone' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:357:in `postpone' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for' from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1068:in `have_func' from extconf.rb:25:in `<main>' To see why this extension failed to compile, please check the mkmf.log which can be found here: /var/folders/t1/24y7lj016md7m0gxdts9c1t00000gn/T/bundler20200405-31805-14pkgzhmysql2-0.5.3/extensions/universal-darwin-19/2.6.0/mysql2-0.5.3/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /var/folders/t1/24y7lj016md7m0gxdts9c1t00000gn/T/bundler20200405-31805-14pkgzhmysql2-0.5.3/gems/mysql2-0.5.3 for inspection. Results logged to /var/folders/t1/24y7lj016md7m0gxdts9c1t00000gn/T/bundler20200405-31805-14pkgzhmysql2-0.5.3/extensions/universal-darwin-19/2.6.0/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
試したこと
gemファイルをインストールしようとしたがこれもできなかった
% sudo gem install mysql2 -v '0.5.3'
Password:
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
current directory: /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3/ext/mysql2
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20200405-31837-pyp9ge.rb extconf.rb
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for rb_wait_for_single_fd()... yes
Using mysql_config at /usr/local/bin/mysql_config
checking for mysql.h... yes
checking for errmsg.h... yes
checking for SSL_MODE_DISABLED in mysql.h... yes
checking for SSL_MODE_PREFERRED in mysql.h... yes
checking for SSL_MODE_REQUIRED in mysql.h... yes
checking for SSL_MODE_VERIFY_CA in mysql.h... yes
checking for SSL_MODE_VERIFY_IDENTITY in mysql.h... yes
checking for MYSQL.net.vio in mysql.h... yes
checking for MYSQL.net.pvio in mysql.h... no
checking for MYSQL_ENABLE_CLEARTEXT_PLUGIN in mysql.h... yes
checking for SERVER_QUERY_NO_GOOD_INDEX_USED in mysql.h... yes
checking for SERVER_QUERY_NO_INDEX_USED in mysql.h... yes
checking for SERVER_QUERY_WAS_SLOW in mysql.h... yes
checking for MYSQL_OPTION_MULTI_STATEMENTS_ON in mysql.h... yes
checking for MYSQL_OPTION_MULTI_STATEMENTS_OFF in mysql.h... yes
checking for my_bool in mysql.h... no
Don't know how to set rpath on your system, if MySQL libraries are not in path mysql2 may not load
Setting libpath to /usr/local/Cellar/mysql/8.0.19/lib
creating Makefile
current directory: /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3/ext/mysql2
make "DESTDIR=" clean
current directory: /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3/ext/mysql2
make "DESTDIR="
compiling client.c
compiling infile.c
compiling mysql2_ext.c
compiling result.c
compiling statement.c
linking shared-object mysql2/mysql2.bundle
ld: warning: directory not found for option '-L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.Internal.sdk/usr/local/lib'
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mysql2.bundle] Error 1
make failed, exit code 2
Gem files will remain installed in /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3 for inspection.
Results logged to /Library/Ruby/Gems/2.6.0/extensions/universal-darwin-19/2.6.0/mysql2-0.5.3/gem_make.out
補足情報（FW/ツールのバージョンなど）
which bundler -> /usr/bin/bundler
gemリストにmysql2はありませんでした。
書き忘れておりましたが、エラーメッセージを実行しところ
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
current directory: /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3/ext/mysql2
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20200405-32158-xeehz6.rb extconf.rb
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for rb_wait_for_single_fd()... yes
-----
Using mysql_config at /usr/local/bin/mysql_config
-----
checking for mysql.h... yes
checking for errmsg.h... yes
checking for SSL_MODE_DISABLED in mysql.h... yes
checking for SSL_MODE_PREFERRED in mysql.h... yes
checking for SSL_MODE_REQUIRED in mysql.h... yes
checking for SSL_MODE_VERIFY_CA in mysql.h... yes
checking for SSL_MODE_VERIFY_IDENTITY in mysql.h... yes
checking for MYSQL.net.vio in mysql.h... yes
checking for MYSQL.net.pvio in mysql.h... no
checking for MYSQL_ENABLE_CLEARTEXT_PLUGIN in mysql.h... yes
checking for SERVER_QUERY_NO_GOOD_INDEX_USED in mysql.h... yes
checking for SERVER_QUERY_NO_INDEX_USED in mysql.h... yes
checking for SERVER_QUERY_WAS_SLOW in mysql.h... yes
checking for MYSQL_OPTION_MULTI_STATEMENTS_ON in mysql.h... yes
checking for MYSQL_OPTION_MULTI_STATEMENTS_OFF in mysql.h... yes
checking for my_bool in mysql.h... no
-----
Don't know how to set rpath on your system, if MySQL libraries are not in path mysql2 may not load
-----
-----
Setting libpath to /usr/local/Cellar/mysql/8.0.19/lib
-----
creating Makefile
current directory: /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3/ext/mysql2
make "DESTDIR=" clean
current directory: /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3/ext/mysql2
make "DESTDIR="
compiling client.c
compiling infile.c
compiling mysql2_ext.c
compiling result.c
compiling statement.c
linking shared-object mysql2/mysql2.bundle
ld: warning: directory not found for option '-L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.Internal.sdk/usr/local/lib'
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mysql2.bundle] Error 1
make failed, exit code 2
Gem files will remain installed in /Library/Ruby/Gems/2.6.0/gems/mysql2-0.5.3 for inspection.
Results logged to /Library/Ruby/Gems/2.6.0/extensions/universal-darwin-19/2.6.0/mysql2-0.5.3/gem_make.out
といったメッセージが表示されました。こちらはどのようにすればよろしいでしょうか。
エラーメッセージを、読みましょうと言ってます。
「エラーメッセージを実行する」の意味が分かりませんが、
> ld: library not found for -lssl
なので、sslのライブラリをインストールし漏れているのでは？
回答1件
0
ベストアンサー
あちらこちらでパーミッションエラーが出ているのが原因でしょうが、sudo(root権限)が必要なruby環境構築はお勧めしません。
MacOSなら、Homebrew（パッケージ管理ツール）とrbenv（ruby管理ツール）で環境構築するのがお勧めです。
homebrewをインストールしてPathを通す
（必要なら）homebrewでmysqlをインストール、設定する
homebrewでrbenvをインストールしてPathを通す
rbenvで必要なバージョンのrubyをインストールする
gem(rails)をインストールするしてrailsアプリを構築する。
すべて一般ユーザ（あなた）で実行できます。
参考にしてください。
投稿2020/04/05 12:07
総合スコア7200
おっしゃる通り環境を再構築したらなんとか解決できました。
おそらく様々なエラーを解決すべくググっていろいろと設定を変えまくってたのが原因だったようです。
ありがとうございました。
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