Railsへのpostgre installのエラー

RailsにPostgreをinstallしたいのですが、以下のエラーが出てきます。Netで調べているのですが、うまく行かず、解決方法をご存じの方は教えて頂けますと幸いです。
尚、こちらのサイトを参考にしました。
リンク内容
psql (PostgreSQL) 9.6.1はinstall済みです

*** 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=/Users/chimaki1987/.rbenv/versions/2.3.0/bin/$(RUBY_BASE_NAME)
	--with-pg
	--without-pg
	--enable-windows-cross
	--disable-windows-cross
	--with-pg-config
	--with-pg-dir
	--without-pg-dir
	--with-pg-include
	--without-pg-include=${pg-dir}/include
	--with-pg-lib
	--without-pg-lib=${pg-dir}/lib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

/Users/chimaki1987/cuty/cuty/vendor/bundle/ruby/2.3.0/extensions/x86_64-darwin-14/2.3.0-static/pg-0.19.0/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /Users/chimaki1987/cuty/cuty/vendor/bundle/ruby/2.3.0/gems/pg-0.19.0 for
inspection.
Results logged to
/Users/chimaki1987/cuty/cuty/vendor/bundle/ruby/2.3.0/extensions/x86_64-darwin-14/2.3.0-static/pg-0.19.0/gem_make.out

An error occurred while installing pg (0.19.0), and Bundler cannot continue.
Make sure that `gem install pg -v '0.19.0'` succeeds before bundling.