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【Mac】bundle installでmysql2が入らないときの対策コマンド

Last updated at Posted at 2019-12-06

◆現象

bundle installをすると次のようなエラーが出てmysql2が上手く入らない。

〜省略〜
current directory: /Users/hogehoge/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.2/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: 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 /Users/hogehoge/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/mysql2-0.5.2 for inspection.
Results logged to /Users/hogehoge/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/extensions/x86_64-darwin-18/2.5.0/mysql2-0.5.2/gem_make.out

An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.5.2' --source 'https://rubygems.org/'` succeeds before bundling.

●エラーで言われていること

ld: library not found for -lssl

ライブラリ(mysql2を入れるのに必要なもの)が見つからないと言われている。ライブラリが見つかるよう指定してあげると解決できる。

◆対策コマンド

ターミナルで次のコマンドを実行してから再度bundle installをする。

bundle config --global build.mysql2 --with-opt-dir="$(brew --prefix openssl)"

これでbundlerを使ってmysql2を入れる際、以下のような場所にあるライブラリを使ってくれるようになる。

brew --prefix openssl
=> /usr/local/opt/openssl@1.1
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