I'm trying to install postgres onto Ubuntu. When running the Bundle Install in terminal I'm receiving this message at the end of the running code. How do I get pg to install properly? Libpq-dev is installed as well.

Using coffee-rails (3.2.2) 
Using diff-lcs (1.1.3) 
Using jquery-rails (2.0.2) 
Installing pg (0.12.2) with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /usr/bin/ruby1.9.1 extconf.rb 
checking for pg_config... yes
Using config values from /usr/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for PQconnectdb() in -lpq... yes
checking for PQconnectionUsedPassword()... yes
checking for PQisthreadsafe()... yes
checking for PQprepare()... yes
checking for PQexecParams()... yes
checking for PQescapeString()... yes
checking for PQescapeStringConn()... yes
checking for PQgetCancel()... yes
checking for lo_create()... yes
checking for pg_encoding_to_char()... yes
checking for PQsetClientEncoding()... yes
checking for rb_encdb_alias()... yes
checking for rb_enc_alias()... no
checking for struct pgNotify.extra in libpq-fe.h... yes
checking for unistd.h... yes
checking for ruby/st.h... yes
creating extconf.h
creating Makefile

make
compiling compat.c
compiling pg.c
pg.c: In function ‘pgconn_wait_for_notify’:
pg.c:2117:3: warning: ‘rb_thread_select’ is deprecated (declared at /usr/include/ruby-
1.9.1/ruby/intern.h:379) [-Wdeprecated-declarations]
pg.c: In function ‘pgconn_block’:
pg.c:2592:3: error: format not a string literal and no format arguments [-Werror=format-
security]
pg.c:2598:3: warning: ‘rb_thread_select’ is deprecated (declared at /usr/include/ruby-
1.9.1/ruby/intern.h:379) [-Wdeprecated-declarations]
pg.c:2607:4: error: format not a string literal and no format arguments [-Werror=format-
security]
pg.c: In function ‘pgconn_locreate’:
pg.c:2866:11: warning: variable ‘lo_oid’ set but not used [-Wunused-but-set-variable]
pg.c: In function ‘find_or_create_johab’:
pg.c:3947:3: warning: implicit declaration of function ‘rb_encdb_alias’ [-Wimplicit-
function-declaration]
cc1: some warnings being treated as errors
make: *** [pg.o] Error 1

Gem files will remain installed in /home/jason/.bundler/tmp/10083/gems/pg-0.12.2 for  
inspection.
Results logged to /home/jason/.bundler/tmp/10083/gems/pg-0.12.2/ext/gem_make.out
An error occurred while installing pg (0.12.2), and Bundler cannot continue.
Make sure that `gem install pg -v '0.12.2'` succeeds before bundling.