Richard Hart

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Kent, UK

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Ruby Gem Mysql on Suse 10

If you get the error below while trying to install the ruby mysql gem on Suse 10 then follow the instuctions below to get it going:

incei273:~ # gem install mysql
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
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… no
checking for main() in -lsocket… no
checking for mysql_query() in -lmysqlclient… no
checking for main() in -lnsl… yes
checking for mysql_query() in -lmysqlclient… 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.

Checking the mkmf.log in:

{ruby-dir}/gems/1.8/gems/mysql-2.7/mkmf.log

… shows libmysql is missing. But looking in /usr/lib/mysql shows some libmysqlclient*.so files but GCC actually needs the .a files.

So fire up yast and install the mysql-devel package.

Then install the Ruby Mysql Gem using:

gem install mysql — –with-mysql-lib=/usr/lib/mysql/