I tried using gem install pg
but it doesn't seem to work.
gem install pg
gives this error
Temporarily enhancing PATH to include DevKit...Building native extensions. This could take a while...ERROR: Error installing pg: ERROR: Failed to build gem native extension.C:/Ruby/bin/ruby.exe extconf.rbchecking for pg_config... noNo pg_config... trying anyway. If building fails, please try again with --with-pg-config=/path/to/pg_configchecking for libpq-fe.h... noCan't find the 'libpq-fe.h header*** extconf.rb failed ***Could not create Makefile due to some reason, probably lack ofnecessary libraries and/or headers. Check the mkmf.log file for moredetails. 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:/Ruby/bin/ruby --with-pg --without-pg --with-pg-dir --without-pg-dir --with-pg-include --without-pg-include=${pg-dir}/include --with-pg-lib --without-pg-lib=${pg-dir}/lib --with-pg-config --without-pg-config --with-pg_config --without-pg_configGem files will remain installed in C:/Ruby/lib/ruby/gems/1.8/gems/pg-0.10.1 forinspection.Results logged to C:/Ruby/lib/ruby/gems/1.8/gems/pg-0.10.1/ext/gem_make.out