Ruby-on-rails 安装mysql2(0.4.8)时出错，Bundler无法继续
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An error occurred while installing mysql2 (0.4.8), and Bundler cannot continue
提问by Sen Sokha
How can I fix this error in ruby on rail.
如何在 ruby on rail 中修复此错误。
source 'https://rubygems.org'
git_source(:github) do |repo_name|
repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
"https://github.com/#{repo_name}.git"
end
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.0.2'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use Puma as the app server
gem 'puma', '~> 3.0'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby
gem 'mysql 2', '0.4.8'
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 3.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platform: :mri
end
group :development do
# Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
gem 'web-console', '>= 3.3.0'
gem 'listen', '~> 3.0.5'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
gem 'spree', '~> 3.2.1'
gem 'spree_auth_devise', github: 'spree/spree_auth_devise'
gem 'spree_gateway', github: 'spree/spree_gateway'
gem 'spree_i18n', github: 'spree-contrib/spree_i18n', branch: 'master'
I ran the 'bundle install' and this error occurred. So to fix the bug of the project, I ran 'gem install mysql2 '0.4.8'' command in console but I can't fix it.
我运行了“捆绑安装”并发生了此错误。所以为了修复项目的错误，我在控制台中运行了 'gem install mysql2 '0.4.8'' 命令，但我无法修复它。
This ruby on rails uses Spree framework.
这个 ruby on rails 使用 Spree 框架。
edit:
编辑：
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /Users/admin/.rvm/gems/ruby-2.4.1/gems/mysql2-0.4.8/ext/mysql2
/Users/admin/.rvm/rubies/ruby-2.4.1/bin/ruby -r ./siteconf20170803-6579-foq4sg.rb extconf.rb
checking for rb_absint_size()... yes
I ran 'bundle install' but I can't success this command because of this error.
我运行了“捆绑安装”，但由于此错误，我无法成功执行此命令。
回答by Tomas Krmela
I think you missing dev library of mysql:
我认为您缺少 mysql 的开发库：
On ubuntu
在 ubuntu 上
sudo apt-get install libmysqlclient-dev
On Red Hat/CentOS and other distributions using yum:
在 Red Hat/CentOS 和其他使用 yum 的发行版上：
sudo yum install mysql-devel
On Mac OS X with Homebrew:
在带有 Homebrew 的 Mac OS X 上：
brew install mysql
回答by Sen Sokha
For Mac, I had a problem with openssl issue
对于 Mac，我遇到了 openssl 问题
An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue.
I fixed this issue use command as below;
我修复了这个问题，使用命令如下；
$ bundle config --local build.mysql2 "--with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include"
$ sudo bundle install
Console Result:
控制台结果：
Fetching mysql2 0.5.2
Installing mysql2 0.5.2 with native extensions
Using puma 3.12.0
Using sprockets 3.7.2
Using sprockets-rails 3.2.1
Fetching rails 5.2.2.1
Installing rails 5.2.2.1
Using rubyzip 1.2.2
Using sass-listen 4.0.0
Using sass 3.7.3
Using tilt 2.0.9
Using sass-rails 5.0.7
Using selenium-webdriver 3.141.0
Using spring 2.0.2
Using spring-watcher-listen 2.0.1
Using turbolinks-source 5.2.0
Using turbolinks 5.2.0
Using uglifier 4.1.20
Using web-console 3.7.0
Bundle complete! 18 Gemfile dependencies, 79 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
Alternative Resolve
替代解决方案
if you still have error and got the message in the console that:
You are replacing the current local value of build.mysql2, which is currently nil. Please try as below:
如果您仍然有错误并在控制台中收到以下消息：
You are replacing the current local value of build.mysql2, which is currently nil. 请尝试如下：
$ export LDFLAGS="-L/usr/local/opt/openssl/lib"
$ export CPPFLAGS="-I/usr/local/opt/openssl/include"
Then run:
然后运行：
$ sudo gem install mysql2 -v '0.5.2' --source 'https://rubygems.org/' -- --with-cppflags=-I/usr/local/opt/openssl/include --with-ldflags=-L/usr/local/opt/openssl/lib
Show result:
显示结果：
Building native extensions with: '--with-cppflags=-I/usr/local/opt/openssl/include --with-ldflags=-L/usr/local/opt/openssl/lib'
This could take a while...
Successfully installed mysql2-0.5.2
Parsing documentation for mysql2-0.5.2
Installing ri documentation for mysql2-0.5.2
Done installing documentation for mysql2 after 0 seconds
1 gem installed
Finally, run bundle install in your project:
最后，在您的项目中运行 bundle install ：
$ sudo bundle install
Let me know if it can save your day!!! :)
让我知道它是否可以挽救您的一天！！！:)
回答by saadlulu
if you are on mac, make sure openSSL is installed first.
如果您使用的是 mac，请确保首先安装了 openSSL。
brew install openssl
then export
然后导出
$ export LDFLAGS="-L/usr/local/opt/openssl/lib"
$ export CPPFLAGS="-I/usr/local/opt/openssl/include"
make sure you have mysql installed
确保你已经安装了 mysql
sudo gem install mysql2 -v '0.5.3' --source 'https://rubygems.org/' -- --with-cppflags=-I/usr/local/opt/openssl/include --with-ldflags=-L/usr/local/opt/openssl/lib
then run bundle
然后运行包
bundle install
I almost lost whats remaining of my hair because I got a new machine and I didnt remember that I had to install openssl.
我几乎失去了我剩下的头发，因为我买了一台新机器，我不记得我必须安装 openssl。
回答by ToTenMilan
回答by Mohd Abdul Mujib
I was having similar issue, but for v4.10
我有类似的问题，但对于 v4.10
Error occurred while installing mysql2 (0.4.10), and Bundler cannot continue
So I had to run the below commands to fix the above issue.
所以我不得不运行以下命令来解决上述问题。
sudo apt-get update
sudo apt-get install build-essential
