pg gemをレールにインストールするには

Question

pg gemをインストールしようとしました。しかし、次のエラーが発生します。誰も私がこの問題を解決するのを助けることができますか？

root@localhost:/home/rails/Project# gem install pg 
Building native extensions. This could take a while... 
ERROR: Error installing pg: 
    ERROR: Failed to build gem native extension. 

    current directory: /var/lib/gems/2.3.0/gems/pg-0.18.4/ext 
/usr/bin/ruby2.3 -r ./siteconf20160908-9582-xu3pmx.rb extconf.rb 
checking for pg_config... yes 
Using config values from /usr/bin/pg_config 
You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application. 
You need to install postgresql-server-dev-X.Y for building a server-side extension or libpq-dev for building a client-side application. 
checking for libpq-fe.h... no 
Can't find the 'libpq-fe.h header 
*** 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=/usr/bin/$(RUBY_BASE_NAME)2.3 
    --with-pg 
    --without-pg 
    --enable-windows-cross 
    --disable-windows-cross 
    --with-pg-config 
    --without-pg-config 
    --with-pg_config 
    --without-pg_config 
    --with-pg-dir 
    --without-pg-dir 
    --with-pg-include 
    --without-pg-include=${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: 

    /var/lib/gems/2.3.0/extensions/x86-linux/2.3.0/pg-0.18.4/mkmf.log 

extconf failed, exit code 1 

Gem files will remain installed in /var/lib/gems/2.3.0/gems/pg-0.18.4 for inspection. 
Results logged to /var/lib/gems/2.3.0/extensions/x86-linux/2.3.0/pg-0.18.4/gem_make.out 
root@localhost:/home/rails/Project#