therubyracerがinstallできない
はじめに・環境
このエラーについては様々な記事を読んだが、どれも自分に当てはまらないものが多かった。 libv8などのversionによっても解決方法が変わるため、あくまで参考程度に読んでいただくと良いかもしれません。
| 対象 | Version |
|---|---|
| OS | macOS Catalina version10.15.7 |
| libv8 | 3.16.14.19 |
| therubyracer | 0.12.3 |
| rails | 5.2.3 |
| ruby | 2.6.5 |
| bundler | 2.0.2 |
therubyracerとは
therubyracerは、Javascriptの実行エンジンであるv8をrubyから叩くために導入するgem。
libv8は以下の様に、therubyracerとの依存関係があり、インストールされるようになっている。
Gemfile.lock
therubyracer (0.12.3)
libv8 (~> 3.16.14.15)
ref
経緯
まず、bundle install --vendor/bundleを実行した際に以下エラーが出現。
Fetching therubyracer 0.12.3 Installing therubyracer 0.12.3 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /Users/myname/Desktop/runteq/advanced/workdir/vendor/bundle/ruby/2.6.0/gems/therubyracer-0.12.3/ext/v8 /Users/myname/.rbenv/versions/2.6.5/bin/ruby -I /Users/myname/.rbenv/versions/2.6.5/lib/ruby/2.6.0 -r ./siteconf20210123-53283-11tly30.rb extconf.rb --with-v8-dir\=/usr/local/Cellar/v8/8.8.278.14 checking for -lpthread... yes checking for -lobjc... yes checking for v8.h... no *** 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/hamorotaiga/.rbenv/versions/2.6.5/bin/$(RUBY_BASE_NAME) --with-pthreadlib --without-pthreadlib --with-objclib --without-objclib --enable-debug --disable-debug --with-v8-dir --with-v8-include --without-v8-include=${v8-dir}/include --with-v8-lib --without-v8-lib=${v8-dir}/lib /Users/myname/Desktop/workdir/vendor/bundle/ruby/2.6.0/gems/libv8-3.16.14.19/ext/libv8/location.rb:50:in `configure': By using --with-system-v8, you have chosen to use the version (Libv8::Location::System::NotFoundError) of V8 found on your system and *not* the one that is bundled with the libv8 rubygem. However, your system version of v8 could not be located. Please make sure your system version of v8 that is compatible with 3.16.14.19 installed. You may need to use the --with-v8-dir option if it is installed in a non-standard location from /Users/myname/Desktop/workdir/vendor/bundle/ruby/2.6.0/gems/libv8-3.16.14.19/lib/libv8.rb:7:in `configure_makefile' from extconf.rb:32:in `<main>' To see why this extension failed to compile, please check the mkmf.log which can be found here: /Users/myname/workdir/vendor/bundle/ruby/2.6.0/extensions/x86_64-darwin-19/2.6.0/therubyracer-0.12.3/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /Users/myname/workdir/vendor/bundle/ruby/2.6.0/gems/therubyracer-0.12.3 for inspection. Results logged to /Users/myname/workdir/vendor/bundle/ruby/2.6.0/extensions/x86_64-darwin-19/2.6.0/therubyracer-0.12.3/gem_make.out An error occurred while installing therubyracer (0.12.3), and Bundler cannot continue. Make sure that `gem install therubyracer -v '0.12.3' --source 'https://rubygems.org/'` succeeds before bundling. In Gemfile: therubyracer
最後らへんに、
gem install therubyracer -v '0.12.3' --source 'https://rubygems.org/'
とあり、実行してもこんな感じのエラーが出る。
checking for -lpthread... yes checking for -lobjc... yes *** 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. ~中略~ extconf failed, exit code 1 ~後略~
解決策
① brew listを実行し、v8@3.15がインストールされているのを確認
autoconf ghostscript imagemagick liblqr node pkg-config shared-mime-info yarn composer glib jpeg libomp oniguruma postgresql sqlite docbook gnu-getopt jq libpng openexr protobuf v8@3.15 docbook-xsl heroku krb5 libtiff openjpeg python@3.8 webp freetype heroku-node libde265 libtool openssl@1.1 rbenv x265 gdbm icu4c libffi little-cms2 pcre readline xmlto gettext ilmbase libheif mysql phpmyadmin ruby-build xz
② brew uninstall v8@3.15で、v8@3.15を一旦アンインストールする。
③ brew install v8@3.15で、再びインストールする。
④ libv8のパスの設定をする
bundle config --local build.libv8 --with-system-v8
⑤ therubyracerのパスの設定をする
myname@mbp workdir % bundle config --local build.therubyracer --with-v8-dir=$(brew --prefix v8-315) You are replacing the current local value of build.therubyracer, which is currently "--with-v8-dir=/usr/local/Cellar/v8/8.8.278.14"
which is currently のあとが nilになってしまう場合は失敗している可能性がある。
--with-v8-dir=$(brew --prefix v8-315)
このフラグは、brew installした際に格納される場所を返している。
⑥ これでbundle install --vendor/bundleを実行
以上、手順で解決。
