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mysql - 错误：mysql gem 的捆绑安装失败

问题描述

提前抱歉我的英语不好。我正在尝试在 RoR 中安装 mysql，但是当我尝试时出现此错误：

Installing mysql2 0.4.10 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/mysql2-0.4.10/ext/mysql2
C:/Ruby25-x64/bin/ruby.exe -r ./siteconf20191021-9148-s1v8ez.rb extconf.rb
--with-opt-dir=/usr/local/opt/openssl
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... no
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
checking for rb_big_cmp()... yes
checking for mysql_query() in -lmysqlclient... no
-----
mysql client is missing. Check your installation of MySQL or Connector/C, and
try again.
-----
*** 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
        --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=C:/Ruby25-x64/bin/$(RUBY_BASE_NAME)
        --with-mysql-dir
        --without-mysql-dir
        --with-mysql-include
        --without-mysql-include=${mysql-dir}/include
        --with-mysql-lib
        --without-mysql-lib=${mysql-dir}/lib
        --with-mysql-config
        --without-mysql-config
        --with-mysql-dir
        --without-mysql-dir
        --with-mysql-include
        --without-mysql-include=${mysql-dir}/include
        --with-mysql-lib
        --without-mysql-lib=${mysql-dir}/lib
        --with-mysqlclientlib
        --without-mysqlclientlib

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

C:/Ruby25-x64/lib/ruby/gems/2.5.0/extensions/x64-mingw32/2.5.0/mysql2-0.4.10/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in
C:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/mysql2-0.4.10 for inspection.
Results logged to
C:/Ruby25-x64/lib/ruby/gems/2.5.0/extensions/x64-mingw32/2.5.0/mysql2-0.4.10/gem_make.out

An error occurred while installing mysql2 (0.4.10), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.4.10' --source 'https://rubygems.org/'`
succeeds before bundling.

In Gemfile:
  mysql2

我已经在这里看到了所有的旧帖子，我尝试解决一些问题，但没有奏效。我已经安装了 ruby​​ 2.5 和 Rails 5。我正在尝试安装 gem mysql2 -v '4.0.10'。你能帮我吗？

标签： mysqlruby-on-railsrubyrubygemsmysql-error-1064

解决方案

它抱怨缺少mysql客户端试试这个命令

sudo apt-get install libmysqlclient-dev

然后重新启动你的mysql然后尝试捆绑

更多：如果您从头开始安装新应用程序，请点击此链接 https://gorails.com/setup/ubuntu/18.04#mysql

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