Error installing Mysql2 gem-10.6 server

I try to install gem mysql2 on server 10.6 and I get an error message that I did not see:

EBuilding native extensions. This could take a while... ERROR: Error installing mysql2: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb checking for rb_thread_blocking_region()... no checking for mysql.h... no checking for mysql/mysql.h... no ----- mysql.h is missing. please check your installation of mysql 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 --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 Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/ext/mysql2/gem_make.out 

I tried a couple of things, indicating where the built-in MySQL sudo gem install mysql2 -- --with-mysql-dir=/var/mysql , and also replacing the built-in mysql with a pre-installed 64-bit installer with mysql.com

Any ideas?

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3 answers

It revealed:

 sudo env ARCHFLAGS="-arch x86_64" gem install mysql2 -- --with-mysql-config=/usr/local/mysql/bin/mysql_config 
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I found out that you have to install the mysql-devel ... On Centos do yum -y install mysql-devel , and you're good to go.

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I have the same problem on OSX 10.5 with RVM with a "system" Ruby interpreter. Using Ruby 1.8.7 through RVM fixed the situation.

I was inspired: https://gist.github.com/440334#file_gistfile1.txt

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