How to install mysql gem on Mac os 10.6? - ruby-on-rails

Question

i just installed MAMP on this iMac and the rubygems but when i run:
sudo gem install mysql — –with-mysql-config=/usr/local/mysql/bin/mysql_config
gives me
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
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
ERROR: could not find gem — locally or in a repository
ERROR: could not find gem –with-mysql-config=/usr/local/mysql/bin/mysql_config locally or in a repository
how can i install this gem ?

Answer 1

I found this and worked out perfectly:
you can go to http://www.tmtm.org/en/ruby/mysql/ to download the tar
file, and run the command below
# ruby ./install.rb
to install the mysql.rb

Answer 2

Use the following it worked with me
brew install mysql

Answer 3

Do you have the Xcode developer tools installed on Mac OS X? If not, I'd start there.
You can download them here: http://developer.apple.com/technologies/xcode.html
Once you've installed that, try again.

Answer 4

i'm still getting this
$ sudo env ARCHFLAGS="-arch i386" gem install mysql -- --with-mysql-config=/Applications/MAMP/Library/bin/mysql_config
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 --with-mysql-config=/Applications/MAMP/Library/bin/mysql_config
checking for mysql_ssl_set()... no
checking for rb_str_set_len()... no
checking for rb_thread_start_timer()... no
checking for mysql.h... no
checking for mysql/mysql.h... 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=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
--with-mysql-config
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

Answer 5

You need the mysql development libs to compile it. If you were on linux you could use "yum install mysql-devel". Not sure about how to get them installed on a mac, but try downloading the connector libraries from here:
MySql Connector Downloads
You may have to pass in a --with-mysql-libs option to point to the directory when the C libraries are unpacked to. Hope this points you in the right direction.
Or you can just put the libraries in the default directory:
/usr/lib64/mysql

Answer 6

Download mysql-dev from mysql.com