qcewebz{PWD}# gem install mysql
Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
        ERROR: Failed to build gem native extension.

        /usr/local/bin/ruby extconf.rb
checking for mysql_ssl_set()... *** 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
        --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=/usr/local/bin/ruby
        --with-mysql-config
        --without-mysql-config
/usr/local/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:461:in `try_link0'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:476:in `try_link'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:619:in `try_func'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:894:in `block in have_func'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:790:in `block in checking_for'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:284:in `block (2 levels) in postpone'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:284:in `block in postpone'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:280:in `postpone'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:789:in `checking_for'
        from /usr/local/lib/ruby/1.9.1/mkmf.rb:893:in `have_func'
        from extconf.rb:45:in `<main>'


Gem files will remain installed in /usr/local/lib/ruby/gems/1.9.1/gems/mysql-2.9.1 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.9.1/gems/mysql-2.9.1/ext/mysql_api/gem_make.out
qcewebz{PWD}#