MySQL 安装：错误：无法构建 gem 原生扩展

Question

I'm trying to get MySQL installed to the latest version due to some installation going wrong somewhere along the line. I run the command gem install mysql and I receive the following:

Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb extconf.rb:4: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 extconf.rb:4: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 extconf.rb:7: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ruby.h

Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/mysql-2.8.1 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/mysql-2.8.1/ext/mysql_api/gem_make.out

I've searched, and tried a whole host of things, from installing specific versions to trying to reinstall ruby without any luck.

Any ideas where I may be going wrong?

I'm trying to get MySQL installed to the latest version due to some installation going wrong somewhere along the line. I run the command gem install mysql and I receive the following:

Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb extconf.rb:4: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 extconf.rb:4: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 extconf.rb:7: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ruby.h

Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/mysql-2.8.1 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/mysql-2.8.1/ext/mysql_api/gem_make.out

I've searched, and tried a whole host of things, from installing specific versions to trying to reinstall ruby without any luck.

Any ideas where I may be going wrong?

EDIT : I installed XCode off my Snow Leopard DVD and the error just changed slightly to the following:

Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb extconf.rb:4: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 extconf.rb:4: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 extconf.rb:7: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 extconf.rb:17: warning: Insecure world writable dir /usr/bin in PATH, mode 040777 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 necessa ry 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=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/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 /Library/Ruby/Gems/1.8/gems/mysql-2.8.1 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/mysql-2.8.1/ext/mysql_api/gem_make.out

doing "which mysql" on the command line returns nothing, which means it's not recognizing it. I also installed the MySQL system preferences option, and I can't stop MySQL from running. Now I'm completely stuck as what to do!

EDIT EDIT

I've just completely reinstalled MySQL using this guide http://hivelogic.com/articles/installing-mysql-on-mac-os-x

Unfortunately this didn't work either, I still receive the same errors. I can't even do mysql -uroot at the command line, I get the error of:

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

So I think I've tried everything.

**SOLVED*

Sorry guys, the reason for this not working was because of the MySQL paths. I've blogged on it here: http://www.kieransenior.co.uk/2010/02/mysql-cant-connect-using-ruby-on-rails-mac-os-x-snow-leopard/

Answer 1

On Debian (or Ubuntu) systems, just install libmysqlclient-dev package using:

sudo apt-get install libmysqlclient-dev

and then:

gem install mysql

It will be installed without any error.

Answer 2

Installing the mysql gem on OSX

in a terminal.. First do a 'locate mysql_config' and then replace the path in the following command with where that file is .

$ sudo gem install mysql -- —–with-mysql-config=/usr/local/mysql/bin/mysql_config
Building native extensions. This could take a while…
Successfully installed mysql-2.7
1 gem installed

Answer 3

First of all you need to differentiate between the MySQL as Server, MySQL as Client and the Ruby bindings to MySQL.

I'm not familiar with Mac, but for *nix OS you need to install MySQL through your package manager. To get the Ruby bindings installed with

gem install mysql

you need the development headers of ruby (in Ubuntu it is the package ruby-dev) and the development headers of the MySQL-Client (currently libmysqlclient16-dev in Ubuntu). I don't know if they are named different on Mac, but after you got those installed the Ruby bindings should install without any error.

Answer 4

A number of people found this post helpful.

Also, I needed to do first type this:

yum install mysql-devel

and then:

gem install mysql 

For some people you may need to type:

gem install mysql -- --with-mysql-config=/usr/local/mysql/mysql_config

Answer 5

on OSX mountain Lion: If you have brew installed, then brew install mysql and follow the instructions on creating a test database with mysql on your machine. You don't have to go all the way through, I didn't need to After I did that I was able to bundle install and rake.

Answer 6

In order to resolve

Gem::Ext::BuildError: ERROR: Failed to build gem native extension error for mysql2,

I think libmysql-ruby got changed with ruby-mysql

Simply try with following commands,

sudo apt-get install ruby-mysql

& then

sudo apt-get install libmysqlclient-dev

Answer 7

I had also forgotten to actually install MySQL in the first place. Following this guide helped a lot.

http://www.djangoapp.com/blog/2011/07/24/installation-of-mysql-server-on-mac-os-x-lion/

As well as adding these lines to my .profile:

export PATH="/usr/local/mysql/bin:$PATH"
alias mysql=/usr/local/mysql/bin/mysql
alias mysqladmin=/usr/local/mysql/bin/mysqladmin

Answer 8

I had a similar experience, so here are the things that I tried

Firstly, I tried to install mysql's required packages by running the command below in my terminal

sudo apt-get install build-essential libmysqlclient-dev

Secondly, I tried updating rubygems on my system by running the command below in my terminal

sudo gem update --system

But I was still experiencing the same issue. After much research I realized that I was using an almost out-of-date version of the mysql gem. I simply needed to use the mysql2 gem ( mysql2 gem )and not the mysql gem, so I fixed it by running the command below in my terminal

gem install mysql2

This worked fine for me. Before running the last command, ensure that you've ran the first and second commands to be sure that everything is fine on your system.

That's all.

I hope this helps

Answer 9

If you use Percona Mysql server

$ yum install Percona-Server-devel-55

$ gem install mysql

Answer 10

you can try to reinstall the latest version of xcode / dev. tools for snow leopard - this should fix your errors

Answer 11

如果你从源码安装这里是一个教程。如果它有帮助，请高兴http://raihan90.blogspot.com/2009/03/mysql-step-by-step-hacking-into-mysql.html

Answer 12

注意：你需要指定 - 键，而不是--with-mysql-config = / usr / local / mysql / bin / mysql_config

Answer 13

yum -y install gcc mysql-devel ruby-devel rubygems
gem install mysql2

Answer 14

Your Ubuntu OS need to install library for mysql client sudo apt-get install libmysqlclient-dev

After That just install bundle or bundle install

Answer 15

While these answers pointed me in the right direction, on Alpine linux the package I needed was mariadb-dev , eg. run apk add mariadb-dev before the gem install mysql command.