# Problems installing mysql-gem **URL:** \ **Category:** Rails\ **Created:** [April 30, 2007, 8:51am UTC](https://www.ruby-forum.com/t/problems-installing-mysql-gem/93269 "2007-04-30T08:51:57Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![emuen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/96bed5/32.png) [@emuen](https://www.ruby-forum.com/u/emuen)\ **Post date:** [April 30, 2007, 8:51am UTC](https://www.ruby-forum.com/t/problems-installing-mysql-gem/93269/1 "2007-04-30T08:51:57Z")
Hi. I have been trying to install the mysql-gem with the inatllation instructions from hivelogic. After running the sudo gem install mysql – --with-mysql-dir=/usr/local/mysql I get the following error: * * * jekyll:/usr/local/src emil$ sudo gem install mysql – –with-mysql-dir=/usr/local/mysql Password: Select which gem to install for your platform (i686-darwin8.9.1) 1. mysql 2.7.3 (mswin32) 2. mysql 2.7.1 (mswin32) 3. mysql 2.7 (ruby) 4. mysql 2.6 (ruby) 5. Skip this gem 6. Cancel installation > 3 > Building native extensions. This could take a while… > ERROR: While executing gem … (Gem::Installer::ExtensionBuildError) > ERROR: Failed to build gem native extension. ruby extconf.rb install mysql – --with-mysql-dir=/usr/local/mysql 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… yes checking for mysql\_ssl\_set()… yes checking for mysql.h… yes creating Makefile make gcc -I. -I. -I/usr/local/lib/ruby/1.8/i686-darwin8.9.1 -I. -DHAVE\_MYSQL\_SSL\_SET -DHAVE\_MYSQL\_H -I/usr/local/mysql/include -fno-common -g -O2 -pipe -fno-common -c mysql.c mysql.c: In function ‘query’: mysql.c:635: error: invalid storage class for function ‘res\_free’ mysql.c:637: error: ‘res\_free’ undeclared (first use in this function) mysql.c:637: error: (Each undeclared identifier is reported only once mysql.c:637: error: for each function it appears in.) mysql.c: In function ‘Init\_mysql’: mysql.c:1299: error: ‘ulong’ undeclared (first use in this function) mysql.c:1299: error: parse error before numeric constant mysql.c:1302: error: parse error before numeric constant make: \*\*\* [mysql.o] Error 1 * * * I currently have mysql 5.x installed. Does anyone of you know this error? Thank you. Emil ---
**Author:** ![emuen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/96bed5/32.png) [@emuen](https://www.ruby-forum.com/u/emuen)\ **Post date:** [April 30, 2007, 9:07am UTC](https://www.ruby-forum.com/t/problems-installing-mysql-gem/93269/2 "2007-04-30T09:07:12Z")
Hola, > Does anyone of you know this error? > I guess I do. I bet you are on Ubuntu… Try this: sudo apt-get install build-essential ruby1.8-dev I am pretty sure you are missing at least one of these packages (According to the error, it seems ruby1.8-dev). If this still does not help (but I am almost sure it will), just ping me, we will try to find out something. Have a nice day, Peter \_\_ [http://www.rubyrailways.com](http://www.rubyrailways.com) :: Ruby and Web2.0 blog [http://scrubyt.org](http://scrubyt.org) :: Ruby web scraping framework [http://rubykitchensink.ca/](http://rubykitchensink.ca/) :: The indexed archive of all things Ruby ---
**Author:** ![emuen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/96bed5/32.png) [@emuen](https://www.ruby-forum.com/u/emuen)\ **Post date:** [April 30, 2007, 12:01pm UTC](https://www.ruby-forum.com/t/problems-installing-mysql-gem/93269/3 "2007-04-30T12:01:07Z")
Hi Peter. Thank you for replying, im not using debian, im istalling on my os x intel-mac. ---
**Author:** ![emuen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/96bed5/32.png) [@emuen](https://www.ruby-forum.com/u/emuen)\ **Post date:** [April 30, 2007, 7:54pm UTC](https://www.ruby-forum.com/t/problems-installing-mysql-gem/93269/4 "2007-04-30T19:54:19Z")
On 4/30/07, Emil K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > In that case, I’d install ruby and rubygems using Macports. It’s a snap after that. ---
**Author:** ![emuen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/96bed5/32.png) [@emuen](https://www.ruby-forum.com/u/emuen)\ **Post date:** [May 14, 2007, 1:25am UTC](https://www.ruby-forum.com/t/problems-installing-mysql-gem/93269/5 "2007-05-14T01:25:40Z")
On 4/30/07, Emil K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Hi Peter. > Thank you for replying, im not using debian, im istalling on my os x > intel-mac. i have always followed JDD’s sandboxing rails with macports instructions without issue: [http://blog.duncandavidson.com/2006/04/sandboxing\_rail.html](http://blog.duncandavidson.com/2006/04/sandboxing_rail.html) cheers, jean-pierre ---
**Author:** ![emuen](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/96bed5/32.png) [@emuen](https://www.ruby-forum.com/u/emuen)\ **Post date:** [May 14, 2007, 1:23am UTC](https://www.ruby-forum.com/t/problems-installing-mysql-gem/93269/6 "2007-05-14T01:23:39Z")
I’m trying to install the mysql gem. I have mysql up and running, everything is up to date through yum in fedora, fc6. [root@localhost ~]# [root@localhost ~]# gem install mysql -y Select which gem to install for your platform (i386-linux) 1. mysql 2.7.3 (mswin32) 2. mysql 2.7.1 (mswin32) 3. mysql 2.7 (ruby) 4. mysql 2.6 (ruby) 5. Skip this gem 6. Cancel installation > 3 Building native extensions. This could take a while… ERROR: While executing gem … (Gem::Installer::ExtensionBuildError) ERROR: Failed to build gem native extension. ruby extconf.rb install mysql -y can’t find header files for ruby. Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/ mysql-2.7 for inspection. Results logged to /usr/lib/ruby/gems/1.8/gems/mysql-2.7/gem\_make.out [root@localhost ~]# [root@localhost ~]# cat /etc/fedora-release Fedora Core release 6 (Zod) [root@localhost ~]# [root@localhost ~]# date Sun May 13 08:01:18 BST 2007 [root@localhost ~]# [root@localhost ~]# thanks, Thufir