Ruby MYSQL2 gem installation on windows 7
I've tried the solution of @Mrk Fldig but it didn't work... So what solved the problem was:
- Downloaded the lastest MySQL Installer for windows 7 32 bits
- Installed the gem with the following command:
gem install mysql2 --platform=ruby -- '--with-mysql-dir="C:/Program Files/MySQL/MySQL Connector C 6.1 6.1.2/"'
One pitfall to be aware of is that I changed the backslashes (\) to normal slashes (/). I've tried the same procedure with backslashes and it didn't work.
The installer already includes the C connectors for MySQL at MySQL Connector C 6.1 6.1.2 directory. Therefore, passing only the --with-mysql-dir parameter without the --with-mysql-lib or --with-mysql-include parameters, makes the gem to look at the same directory for the lib and include directories
EDIT 30/09/2014
When this answer was posted the 64 bit rails installer wasn't the recommended version - it now seems people are starting to use it more. It should be noted when you download the MySQL Connector you need to download either 64 or 32bit to correspond to the version of rails you installed.
Amazingly I lucked upon an answer very early this morning as I happened to be looking for something else of a similar nature. I'm not quite sure why there isn't a single simple guide for this as it appears to be very straight forward!
For some reason just specifying the mysql-dir when you install the gem doesn't pick up with other sub directories so you need to set the parameters manually.
For anyone else experiencing the same problem, I did the following:
1) Download the MySql C Connector from: http://dev.mysql.com/downloads/connector/c/
NOTE Don't download the installer, download the ARCHIVE for your OS
Download either the 32bit or 64 bit ARCHIVE to correspond with the version of rails you installed.
2) Extract the file to C:\mysql-connector
3) Then ran:
gem install mysql2 --platform=ruby -- '--with-mysql-lib="C:\mysql-connector\lib" --with-mysql-include="C:\mysql-connector\include" --with-mysql-dir="C:\mysql-connector"'
Voila everything is working fine.
EDIT 30/01/2014
I just had to do a fresh install on a bricked machine and the command in step 3 didn't work, what did work was:
gem install mysql2 --platform=ruby -- '--with-mysql-dir="C:\mysql-connector"'
I'm not quite sure what the difference is but this time it seems to be picking up the directories ok, so if the first one doesn't work try this one!
I think this has to do with how you go about installing rails, this time round I used the railsinstaller which seems to set the paths up correctly.
A lot of the outcome here seems to depend on the shell your using, a lot of people are having problems with powershell so I wouldn't advise using it. I did this in an elevated command prompt.
Oh and lastly if you get an error regarding the mysql2 gem when you do RAILS S you need to copy the libmysql.dll from the LIB directory of the mysql connector to the bin directory where rails has been installed.