# ONLamp tutorial install issue (mysql gem) **URL:** \ **Category:** Ruby\ **Created:** [February 7, 2006, 11:18am UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971 "2006-02-07T11:18:59Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 7, 2006, 11:18am UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/1 "2006-02-07T11:18:59Z")
Hi all, I have downloaded and installed Ruby on Rails and started on the ONLamp tutorial (cookbook), all went well and RoR installed OK. My installation of MySql gem file failed with error: ERROR: Error installing gem mysql[.gem]: ERROR: Failed to build gem native extension. Gem files will remain installed in C:/ruby/lib/ruby/gems/1.8/gems/mysql-2.7 for inspection. ruby extconf.rb install mysql\nchecking for mysql\_query() in mysqlclient.lib… no checking for main() in m.lib… yes checking for mysql\_query() in mysqlclient.lib… no checking for main() in z.lib… no checking for mysql\_query() in mysqlclient.lib… no checking for main() in socket.lib… no checking for mysql\_query() in mysqlclient.lib… no checking for main() in nsl.lib… no checking for mysql\_query() in mysqlclient.lib… no Background info: Windows XP Ruby 1.8.4 installed OK MySQL 2.7 gem MySQL 5.0.18 installed OK (I created tables, inserted data, all OK) directory is C:\ent\mysql Ruby on Rails 1.0 installed OK After installing MySQL from installer, I noticed that MySQL did not install a /lib and /include directories. I then downloaded the zip version of MySQL which contained these diectories and added them, all to no avail - I still get the error above. BTW I have dowloaded the gem file and run it from a ‘temp’ directory. I have tried running ruby extconf.rb with various options, all with not luck Any ideas ? ( I am going to download InstantRails and try that - whilst I am a big fan of Ruby this whole RoR install/demo process needs more polishing) If i have missed anything out, I am happy to give more details. Regards, Serge ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 7, 2006, 4:46pm UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/2 "2006-02-07T16:46:55Z")
There is a known bug that causes this to happen of Fedora core 4. I can’t remember the exact method to fix it or the exact link of the tutorial on how to fix it, but you can google it. I know the solution is on [ocforums.com](http://ocforums.com) ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 7, 2006, 5:33pm UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/3 "2006-02-07T17:33:06Z")
You don’t need to install the MySQL gem at all (at least not for going through the tutorial). Rails comes with a pure-Ruby interface to MySQL that works just find for development (and even low volume production). The gem just gives you a faster C-based version of the driver. Also, you might want to consider trying Instant Rails and its “port” of the ONLamp tutorial to be Instant Rails specific: [http://instantrails.rubyforge.org/](http://instantrails.rubyforge.org/) Curt ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 11, 2006, 3:03am UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/4 "2006-02-11T03:03:29Z")
Thanks, I am not sure what the problem, but I downloaded RADRuby Eclipse plugin and recreated the tutorial, and it worked fine. I will investigate to see what the problem was. I appreciate all the prompt responses to my question. Regards, Serge ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 12, 2006, 10:14pm UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/5 "2006-02-12T22:14:30Z")
I’m trying to use the unnormalize method of the Text class in the REXML module to un-escape some XML, but I’m getting this error: /usr/local/lib/ruby/1.8/rexml/text.rb:304:in `unnormalize': private method`gsub!’ called for #REXML::Text:0x10aeb80 (NoMethodError) The code for the unnormalize method looks like this: def Text::unnormalize( string, doctype=nil, filter=nil, illegal=nil ) rv = string.clone rv.gsub!( /\r\n?/, “\n” ) … Any ideas as to why Ruby thinks gsub! is private, and why I can’t call the method? Thanks, Christian ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 12, 2006, 10:03pm UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/6 "2006-02-12T22:03:50Z")
mysqlclient.lib was not found it comes with mysql or development packages (in some linux distros) just install any of these, and if it still wont compile, you’ll have to set some parameters (–with-mysql=/path/to/mysql, or something) Meião ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 13, 2006, 5:16am UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/7 "2006-02-13T05:16:52Z")
For those interested, I was passing in an instance of Text rather than a string. Oops. Calling to\_s solved the problem. Christian ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [February 13, 2006, 5:32am UTC](https://www.ruby-forum.com/t/onlamp-tutorial-install-issue-mysql-gem/101971/8 "2006-02-13T05:32:23Z")
DÅ?a Pondelok 13 Február 2006 05:16 Christian Cantrell napísal: > For those interested, I was passing in an instance of Text rather > than a string. Oops. Calling to\_s solved the problem. > > Christian Weird. I’d say a Text XML node would be coercible to a String without much problems. I say hint the REXML people to have Text implement to\_str? David V.