<https://github.com/diasks2/heroku-buildpack-mecab>
を用いてHerokuにmecabを入れようとしましたが、できませんでした。

mecabを入れたい理由は、nattoを使うためです。もし、herokuでnattoを使っている方で、herokuのイントール方法が分かる方がいらっしゃれば教えていただきたいです。

## エラーログ

```

    Counting objects: 5, done.
    Delta compression using up to 4 threads.
    Compressing objects: 100% (5/5), done.
    Writing objects: 100% (5/5), 1.09 KiB | 371.00 KiB/s, done.
    Total 5 (delta 0), reused 0 (delta 0)
    remote: Compressing source files... done.
    remote: Building source:
    remote:
    remote: -----> Ruby app detected
    remote: -----> Compiling Ruby
    remote: -----> Using Ruby version: ruby-2.3.4
    remote: -----> Installing dependencies using bundler 1.15.2
    remote:        Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
    remote:        Warning: the running version of Bundler (1.15.2) is older than the version that created the lockfile (1.16.0.pre.2). We suggest you upgrade to the latest version of Bundler by running `gem install bundler --pre`.
    remote:        Fetching gem metadata from https://rubygems.org/.
    remote:        Fetching version metadata from https://rubygems.org/
    remote:        Using bundler 1.15.2
    remote:        Fetching mecab 0.996
    remote:        Installing mecab 0.996 with native extensions
    remote:        Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
    remote:        current directory:
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/gems/mecab-0.996/ext/mecab
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/ruby-2.3.4/bin/ruby -r
    remote:        ./siteconf20171211-265-7zd2yx.rb extconf.rb
    remote:        checking for make... yes
    remote:        *** extconf.rb failed ***
    remote:        Could not create Makefile due to some reason, probably lack of necessary
    remote:        libraries and/or headers.  Check the mkmf.log file for more details.  You may
    remote:        need configuration options.
    remote:        Provided configuration options:
    remote:        --with-opt-dir
    remote:        --without-opt-dir
    remote:        --with-opt-include
    remote:        --without-opt-include=${opt-dir}/include
    remote:        --with-opt-lib
    remote:        --without-opt-lib=${opt-dir}/lib
    remote:        --with-make-prog
    remote:        --without-make-prog
    remote:        --srcdir=.
    remote:        --curdir
    remote:        --ruby=/tmp/build_329729ef0eca3400055681880f97452b/vendor/ruby-2.3.4/bin/$(RUBY_BASE_NAME)
    remote:        --with-mecab-config
    remote:        --without-mecab-config
    remote:        --enable-mecab-config
    remote:        --disable-mecab-config
    remote:        extconf.rb:12:in ``': No such file or directory - mecab-config (Errno::ENOENT)
    remote:        from extconf.rb:12:in `<main>'
    remote:        To see why this extension failed to compile, please check the mkmf.log which can
    remote:        be found here:
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/extensions/x86_64-linux/2.3.0/mecab-0.996/mkmf.log
    remote:        extconf failed, exit code 1
    remote:        Gem files will remain installed in
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/gems/mecab-0.996
    remote:        for inspection.
    remote:        Results logged to
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/extensions/x86_64-linux/2.3.0/mecab-0.996/gem_make.out
    remote:        An error occurred while installing mecab (0.996), and Bundler cannot continue.
    remote:        Make sure that `gem install mecab -v '0.996'` succeeds before bundling.
    remote:        In Gemfile:
    remote:        mecab
    remote:        Bundler Output: Warning: the running version of Bundler (1.15.2) is older than the version that created the lockfile (1.16.0.pre.2). We suggest you upgrade to the latest version of Bundler by running `gem install bundler --pre`.
    remote:        Fetching gem metadata from https://rubygems.org/.
    remote:        Fetching version metadata from https://rubygems.org/
    remote:        Using bundler 1.15.2
    remote:        Fetching mecab 0.996
    remote:        Installing mecab 0.996 with native extensions
    remote:        Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
    remote:
    remote:        current directory:
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/gems/mecab-0.996/ext/mecab
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/ruby-2.3.4/bin/ruby -r
    remote:        ./siteconf20171211-265-7zd2yx.rb extconf.rb
    remote:        checking for make... yes
    remote:        *** extconf.rb failed ***
    remote:        Could not create Makefile due to some reason, probably lack of necessary
    remote:        libraries and/or headers.  Check the mkmf.log file for more details.  You may
    remote:        need configuration options.
    remote:
    remote:        Provided configuration options:
    remote:        --with-opt-dir
    remote:        --without-opt-dir
    remote:        --with-opt-include
    remote:        --without-opt-include=${opt-dir}/include
    remote:        --with-opt-lib
    remote:        --without-opt-lib=${opt-dir}/lib
    remote:        --with-make-prog
    remote:        --without-make-prog
    remote:        --srcdir=.
    remote:        --curdir
    remote:        --ruby=/tmp/build_329729ef0eca3400055681880f97452b/vendor/ruby-2.3.4/bin/$(RUBY_BASE_NAME)
    remote:        --with-mecab-config
    remote:        --without-mecab-config
    remote:        --enable-mecab-config
    remote:        --disable-mecab-config
    remote:        extconf.rb:12:in ``': No such file or directory - mecab-config (Errno::ENOENT)
    remote:        from extconf.rb:12:in `<main>'
    remote:
    remote:        To see why this extension failed to compile, please check the mkmf.log which can
    remote:        be found here:
    remote:
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/extensions/x86_64-linux/2.3.0/mecab-0.996/mkmf.log
    remote:
    remote:        extconf failed, exit code 1
    remote:
    remote:        Gem files will remain installed in
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/gems/mecab-0.996
    remote:        for inspection.
    remote:        Results logged to
    remote:        /tmp/build_329729ef0eca3400055681880f97452b/vendor/bundle/ruby/2.3.0/extensions/x86_64-linux/2.3.0/mecab-0.996/gem_make.out
    remote:
    remote:        An error occurred while installing mecab (0.996), and Bundler cannot continue.
    remote:        Make sure that `gem install mecab -v '0.996'` succeeds before bundling.
    remote:
    remote:        In Gemfile:
    remote:        mecab
    remote:  !
    remote:  !     Failed to install gems via Bundler.
    remote:  !
    remote:  !     Push rejected, failed to compile Ruby app.
    remote:
    remote:  !     Push failed
    remote: Verifying deploy...
    remote:
    remote: !   Push rejected to afternoon-scrubland-60893.
    remote:
    To https://git.heroku.com/afternoon-scrubland-60893.git
     ! [remote rejected] master -> master (pre-receive hook declined)
    error: failed to push some refs to 'https://git.heroku.com/afternoon-scrubland-60893.git
    
```
CC BY-SA 3.0
2017-12-12T01:04:31.783
40200
2018-07-20T16:09:23.620
14516
question
heroku mecab
Herokuにmecabをインストールできない
こんにちは。類似の質問をして、回答をいただきました。

もしまだこちらの問題でお悩みであれば、こちらをご覧になってみてください。

[MeCabを用いたSinatraアプリをHerokuにデプロイする方法をご教示ください。](https://ja.stackoverflow.com/questions/46625/mecab%E3%82%92%E7%94%A8%E3%81%84%E3%81%9Fsinatra%E3%82%A2%E3%83%97%E3%83%AA%E3%82%92heroku%E3%81%AB%E3%83%87%E3%83%97%E3%83%AD%E3%82%A4%E3%81%99%E3%82%8B%E6%96%B9%E6%B3%95%E3%82%92%E3%81%94%E6%95%99%E7%A4%BA%E3%81%8F%E3%81%A0%E3%81%95%E3%81%84)

上記の質問でいただいたご指摘の通り1つずつ修正を進めたところ、

```

    No such file or directory - mecab-config (Errno::ENOENT)
    remote:        from extconf.rb:12:in `<main>'
    
```

というエラーは`LD_LIBRARY_PATH`のミスが原因と見えました。

ただ、環境変数の設定変更のみではうまくいかない場合もありそうです。

私はrubyのバージョンをGemfile内で指定することで、ひとまずデプロイはできました。

しかしデプロイ後さらにApplication Errorでつまづきました。

デプロイが完了してApplication Errorになる状態まで到達するとわかりますが、gem
nattoをrequireする行にてエラーが出ます。nattoは使えないのかもしれない…？です。

nattoを使わなくてもmecabというgemさえあれば問題ないと思いますので、以上、よろしければお試しください。
CC BY-SA 4.0
2018-07-20T16:09:23.620
46796
2018-07-20T16:09:23.620
29320
40200
answer