I just need a big help while i was facing this for past 3 months.
I am using windows 8 machine.
I was trying to install ruby in rails.Everything got success.
but while installing mysql gem i can face many errors which i have copied and pasted below
C:\Users\Mounarajan P A>gem install mysql Temporarily enhancing PATH to include DevKit... Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension. C:/Ruby200-x64/bin/ruby.exe extconf.rb checking for main() in -llibmysql... 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. 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:/Ruby200-x64/bin/ruby --with-mysql-dir --without-mysql-dir --with-mysql-include --without-mysql-include=${mysql-dir}/include --with-mysql-lib --without-mysql-lib=${mysql-dir}/ --with-libmysqllib --without-libmysqllib Gem files will remain installed in C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql -2.9.1 for inspection. Results logged to C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql-2.9.1/ext/mysql_ api/gem_make.out 
