Hi All,

I am getting below issue while installing mysql gem on my windows
machine. Please help to resolve this issue.

C:\Documents and Settings\Raj>gem install mysql
Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
        ERROR: Failed to build gem native extension.

C:/Ruby19/bin/ruby.exe extconf.rb
checking for mysql_query() in -lmysqlclient... *** 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=C:/Ruby19/bin/ruby
  --with-mysql-config
  --without-mysql-config
  --with-mysql-dir
  --without-mysql-dir
  --with-mysql-include
  --without-mysql-include=${mysql-dir}/include
  --with-mysql-lib
  --without-mysql-lib=${mysql-dir}/lib
  --with-mysqlclientlib
  --without-mysqlclientlib
C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:362:in `try_do': The complier failed to
generate an executable file. (RuntimeError)
You have to install development tools first.
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:415:in `try_link0'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:419:in `try_link'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:527:in `try_func'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:748:in `block in find_library'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:668:in `block in checking_for'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:274:in `block (2 levels) in
postpone'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:248:in `open'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:274:in `block in postpone'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:248:in `open'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:270:in `postpone'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:667:in `checking_for'
  from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:744:in `find_library'
  from extconf.rb:14:in `<main>'
-- 
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