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PORuby gem mysql2 install error
 

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    <p>I have the Ruby version ruby 1.9.2p0 (2010-08-18) [i386-mingw32] installed in Windows7. and the gem vesion 1.3.7</p> <p>When i tried to install mysql gem, it is showing <code>Failed to build gem native extension</code> error, why is this? my mysql version is 5.1.36(WampServer)</p> <pre><code>E:\RubyApps\test_app2&gt;gem install mysql2 Building native extensions. This could take a while... ERROR: Error installing mysql2: ERROR: Failed to build gem native extension. E:/Ruby192/bin/ruby.exe extconf.rb checking for rb_thread_blocking_region()... *** 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. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=E:/Ruby192/bin/ruby E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed to genera te an executable file. (RuntimeError) You have to install development tools first. from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:435:in `try_link0' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:440:in `try_link' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:552:in `try_func' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:797:in `block in have_func' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postp one' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:276:in `postpone' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for' from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:796:in `have_func' from extconf.rb:9:in `&lt;main&gt;' Gem files will remain installed in E:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0. 2.3 for inspection. Results logged to E:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.2.3/ext/mysql2/ge m_make.out E:\RubyApps\test_app2&gt; </code></pre>
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    1. USMithun Sreedharan
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    1. COif you still have problems (i did) gem install mysql2 -v 0.2.6
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      1. USGaret Claborn
 

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