我在安装mysql2 gem时遇到问题。
当我做gem install mysql2
时,这就出现了:
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
此外,当我使用rails server
时,这会出现:
Could not find gem 'mysql2 (>= 0, runtime)' in any of the gem sources listed in your Gemfile.
看来它找不到MySQL库。你安装了MySQL吗? 尝试通过homebrew安装它:
brew install mysql
或者通过macports或fink或任何你喜欢的方式安装它,然后再试一次:
gem install mysql2
我知道这已被多次回答了,这里有什么对我有用:2019年5月20日OSX Mojave 10.14.4 MySQL Ver 14.14 Distrib 5.7.24,for osx10.14(x86_64)使用EditLine wrapper ruby 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/[email protected]/5.7.24/bin/mysql_config”更改为当前有效路径来自“/ usr / local / Cellar / mysql”
希望这可以帮助!
这个命令对我有用:
gem install mysql2 -- --srcdir=/usr/local/mysql/include
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
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
以下对我有用
brew install mysql
brew install mysql-connector-c
gem install mysql2
如果您使用自制软件安装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
以找到它的mysql版本。
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) *
...
那么如果你想用bundle安装:
bundle config build.mysql --with-mysql-config=/usr/local/Cellar/mysql/y.y.y/bin/mysql_config
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"
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 - 请务必遵循自制软件中的所有说明!我错过了几步,浪费了另一个小时来追踪这个问题 - 这里是那些指示:https://stackoverflow.com/a/11061487/1241271
MySQL成功安装后,我运行: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)。
确保通过Homebrew在Mac上安装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