nokogiriエラー。。。

bundle installをして開発をしていた時には、何もなかったのですが、

本番環境にあげようと思い、いざbundle install --path vendor/bundler

をするとノコギリでエラーが起きてしまします。

中略

Installing nokogiri 1.8.5 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/itou_ooji/re_japan_test/jp/j_p_10_16/vendor/bundler/ruby/2.5.0/gems/nokogiri-1.8.5/ext/nokogiri
/Users/itou_ooji/.rbenv/versions/2.5.0/bin/ruby -r ./siteconf20181025-18377-dn81v7.rb extconf.rb --use-system-libraries
checking if the C compiler accepts ... yes
checking if the C compiler accepts -Wno-error=unused-command-line-argument-hard-error-in-future... no
Building nokogiri using system libraries.
pkg-config could not be used to find libxml-2.0
Please install either `pkg-config` or the pkg-config gem per

    gem install pkg-config -v "~> 1.1"

pkg-config could not be used to find libxslt
Please install either `pkg-config` or the pkg-config gem per

    gem install pkg-config -v "~> 1.1"

pkg-config could not be used to find libexslt
Please install either `pkg-config` or the pkg-config gem per

    gem install pkg-config -v "~> 1.1"

ERROR: cannot discover where libxml2 is located on your system. please make sure `pkg-config` is installed.
*** 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/itou_ooji/.rbenv/versions/2.5.0/bin/$(RUBY_BASE_NAME)
	--help
	--clean
	--use-system-libraries
	--with-zlib-dir
	--without-zlib-dir
	--with-zlib-include
	--without-zlib-include=${zlib-dir}/include
	--with-zlib-lib
	--without-zlib-lib=${zlib-dir}/lib
	--with-xml2-dir
	--without-xml2-dir
	--with-xml2-include
	--without-xml2-include=${xml2-dir}/include
	--with-xml2-lib
	--without-xml2-lib=${xml2-dir}/lib
	--with-libxml-2.0-config
	--without-libxml-2.0-config
	--with-pkg-config
	--without-pkg-config
	--with-xslt-dir
	--without-xslt-dir
	--with-xslt-include
	--without-xslt-include=${xslt-dir}/include
	--with-xslt-lib
	--without-xslt-lib=${xslt-dir}/lib
	--with-libxslt-config
	--without-libxslt-config
	--with-exslt-dir
	--without-exslt-dir
	--with-exslt-include
	--without-exslt-include=${exslt-dir}/include
	--with-exslt-lib
	--without-exslt-lib=${exslt-dir}/lib
	--with-libexslt-config
	--without-libexslt-config

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /Users/itou_ooji/re_japan_test/jp/j_p_10_16/vendor/bundler/ruby/2.5.0/extensions/x86_64-darwin-17/2.5.0-static/nokogiri-1.8.5/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/itou_ooji/re_japan_test/jp/j_p_10_16/vendor/bundler/ruby/2.5.0/gems/nokogiri-1.8.5 for inspection.
Results logged to /Users/itou_ooji/re_japan_test/jp/j_p_10_16/vendor/bundler/ruby/2.5.0/extensions/x86_64-darwin-17/2.5.0-static/nokogiri-1.8.5/gem_make.out

An error occurred while installing nokogiri (1.8.5), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.8.5' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  rails was resolved to 5.2.1, which depends on
    actioncable was resolved to 5.2.1, which depends on
      actionpack was resolved to 5.2.1, which depends on
        actionview was resolved to 5.2.1, which depends on
          rails-dom-testing was resolved to 2.0.3, which depends on
            nokogiri

これを解決したいのですが、何をすればいいのでしょうか。
自分自身原因が全くわからないです。。。

エラー文に書かれていたgem install nokogiri -v '1.8.5' --source 'https://rubygems.org/'は通したのですが、それでもまだエラーが起きます。。

行動規範の内容に同意します

回答2件

ベストアンサー

お使いの環境がよくわからないので、具体的な指摘はできませんが...

pkg-config could not be used to find libxml-2.0

Please install either pkg-config or the pkg-config gem per

gem install pkg-config -v "~> 1.1"

pkg-config could not be used to find libxslt
Please install either pkg-config or the pkg-config gem per

gem install pkg-config -v "~> 1.1"

pkg-config could not be used to find libexslt
Please install either pkg-config or the pkg-config gem per
gem install pkg-config -v "~> 1.1"
ERROR: cannot discover where libxml2 is located on your system. please make sure pkg-config is installed.