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POProblem installing mysql gem on Snow Leopard: uninitialized constant MysqlCompat::MysqlRes
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copied!<p>I've got a problem trying to install the Ruby mysql gem driver.</p> <p>I recently upgraded to <strong>Snow Leopard</strong> and did the Hivelogic manual install of MySQL. This all seems to work fine as I can access mysql from the command line and make changes to the database.</p> <p>My problem is that if I now use</p> <pre><code>rake db:migrate </code></pre> <p>I get:</p> <pre><code>rake aborted! uninitialized constant MysqlCompat::MysqlRes (See full trace by running task with --trace) </code></pre> <p>Now it appears that my mysql gem isn't working correctly as I can access MySQL fine from Python using the Python driver (which I compiled to). I therefore tried to rebuild the gem using the following command from this site: <a href="http://techliberty.blogspot.com/" rel="nofollow noreferrer">http://techliberty.blogspot.com/</a>, (incidentally I am using a recent Intel MacBook Pro):</p> <pre><code> sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config </code></pre> <p>This compiles although I get No definition for the documentation:</p> <pre><code> Building native extensions. This could take a while... Successfully installed mysql-2.8.1 1 gem installed Installing ri documentation for mysql-2.8.1... No definition for next_result No definition for field_name ... </code></pre> <p>I'm a little stumped as my mysql_config is located in the correct place:</p> <pre><code> /usr/local/mysql/bin/mysql_config </code></pre> <p>And I have removed all other instances of the mysql gem, from my system.</p> <p>Any suggestions would be greatly appreciated. Many thanks.</p> <p>PS I saw this previous post <a href="https://stackoverflow.com/questions/1332207/uninitialized-constant-mysqlcompatmysqlres-using-mms2r-gem">uninitialized constant MysqlCompat::MysqlRes (using mms2r gem)</a> but it doesn't seem applicable for my version.</p>

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