我在安装mysql2 gem时遇到问题。
当我gem install mysql2
时出现:
Marks-MacBook-Pro:~ Mark$ gem install mysql2
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/Users/useruser/.rvm/rubies/ruby-1.9.2-p136/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lmygcc... no
checking for mysql_query() in -lmysqlclient... 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/useruser/.rvm/rubies/ruby-1.9.2-p136/bin/ruby
--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
--with-mlib
--without-mlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-zlib
--without-zlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-socketlib
--without-socketlib
--with-mysqlclientlib
--without-mysqlclientlib
--with-nsllib
--without-nsllib
--with-mysqlclientlib
--without-mysqlclientlib
--with-mygcclib
--without-mygcclib
--with-mysqlclientlib
--without-mysqlclientlib
Gem files will remain installed in /Users/useruser/.rvm/gems/ruby-1.9.2-p136/gems/mysql2-0.2.6 for inspection.
Results logged to /Users/useruser/.rvm/gems/ruby-1.9.2-p136/gems/mysql2-0.2.6/ext/mysql2/gem_make.out
当我使用rails server
时,会出现这个问题:
Could not find gem 'mysql2 (>= 0, runtime)' in any of the gem sources listed in your Gemfile.
答案 0 :(得分:50)
似乎找不到MySQL库。你安装了MySQL吗? 尝试通过homebrew安装它:
brew install mysql
或通过macports或fink或任何你喜欢的方式安装它,然后再试一次:
gem install mysql2
答案 1 :(得分:37)
这个命令对我有用:
gem install mysql2 -- --srcdir=/usr/local/mysql/include
答案 2 :(得分:22)
以下命令成功地为我工作。
x.x.x =您要安装的mysql2版本。
gem install mysql2 -v 'x.x.x' -- --srcdir=/usr/local/mysql/include
答案 3 :(得分:17)
我在Mac OS X上不需要MySQL,因为我在Vagrant盒子上安装了MySQL。因此,我刚刚安装了mysql-connector-c。
brew install mysql-connector-c
gem install mysql2
答案 4 :(得分:4)
如果您使用自制来安装mysql brew install mysql
,这对我有用:
gem install mysql2 -v 'x.x.x' -- --with-mysql-config=/usr/local/Cellar/mysql/y.y.y/bin/mysql_config
x.x.x =您要安装的mysql2 gem的版本
y.y.y =您已安装ls /usr/local/Cellar/mysql
的mysql版本,以便找到它。
获取mysql的版本
brew info mysql
mysql: stable 5.7.19 (bottled)
...
/usr/local/Cellar/mysql/5.7.19 (322 files, 233MB) *
...
然后如果你想用bundle安装:
bundle config build.mysql --with-mysql-config=/usr/local/Cellar/mysql/y.y.y/bin/mysql_config
答案 5 :(得分:3)
您必须指定一些其他环境变量才能在Mac OSX 10.6的64位架构上安装此gem:
env ARCHFLAGS="-arch x86_64" gem install mysql2
如果您使用的是rvm,可以在〜/ .rvmrc文件中将其添加为默认选项:
rvm_archflags="-arch x86_64"
答案 6 :(得分:1)
我有完全相同的问题和错误尝试安装mysql2。我认为我的mamp安装的MySQL可以正常工作并花了几个小时来玩这些工作的路径 - 没有成功。
终于从ALoR发现了这篇文章并通过自制软件安装了一个新版本 - 但是 - 请务必按照自制程序中的所有说明进行操作!我错过了几个步骤,浪费了另一个小时来追踪这个问题 - 这是这些说明: https://stackoverflow.com/a/11061487/1241271
成功安装MySQL之后,我运行了sudo gem install mysql2
,它就像一个魅力。
希望这可以帮助某人浪费几个小时,因为他们忽略了阅读文档(newb错误)。
答案 7 :(得分:0)
确保通过Homebrew在Mac上安装了openssl。
brew install openssl
Install mysql2 gem.
gem install mysql2 -v '0.5.2' -- --with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/i
答案 8 :(得分:0)
我知道这个问题已经被回答了很多次,以下是对我有用的方法: 五月20,2019 OSX Mojave 10.14.4 使用EditLine包装器的osx10.14(x86_64)的MySQL Ver 14.14 Distrib 5.7.24 红宝石2.5.0p0(2017-12-25修订版61468)[x86_64-darwin17] Rails 5.2.1
export LIBRARY_PATH=$LIBRARY_PATH:/usr/local/opt/openssl/lib/
gem install mysql2 -- --with-mysql-config=/usr/local/Cellar/mysql\@5.7/5.7.24/bin/mysql_config
将“ /usr/local/Cellar/mysql@5.7/5.7.24/bin/mysql_config”更改为您当前从“ / usr / local / Cellar / mysql”获得的有效路径
希望这会有所帮助!
答案 9 :(得分:0)
升级到Catalina(10.15.x)后,我遇到了同样的问题
我的Gemfile.lock定义了mysql2-0.3.20,无法安装。 但是,当我将其升级到mysql2-0.5.2
时,它起作用了gem update mysql2 -- --srcdir=/usr/local/include/mysql/
请确保已将Brew与mysql一起安装。
brew install mysql
brew link mysql
(链接/usr/local/Cellar/mysql/8.0.18 ...已创建95个符号链接)
但是,此后安装了gem mysql2,但捆绑更新mysql2无法正常工作。
但这另一个答案帮助了我 https://stackoverflow.com/a/39628463/110214
bundle config --local build.mysql2 "--with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include"
bundle update mysql2
答案 10 :(得分:0)
要修复手动安装gem:
brew install openssl
gem install mysql2 -- --with-opt-dir="$(brew --prefix openssl)"
要修复所有捆绑包安装,请执行以下操作:
brew install openssl
bundle config --global build.mysql2 --with-opt-dir="$(brew --prefix openssl)"
bundle install