[ruby] 우분투에 PostgreSQL의 pg gem을 설치하는 방법은 무엇입니까?

Ruby 용 PostgreSQL의 pg gem을 설치하려고합니다.

나는 다음 명령을 내렸다.

gem install pg

RVM을 사용하여 Ruby 1.9.2를 설치했습니다.

위의 명령은 다음과 같은 오류를 보여줍니다.

오류는 다음과 같습니다

Building native extensions.  This could take a while...

ERROR:  Error installing pg:

ERROR: Failed to build gem native extension.

/home/User/.rvm/rubies/ruby-1.9.2-preview3/bin/ruby extconf.rb

checking for pg_config... yes
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)

*** 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=/home/User/.rvm/rubies/ruby-1.9.2-preview3/bin/ruby
 --with-pg
 --without-pg
 --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
 --enable-static-build
 --disable-static-build
 --with-pqlib
 --without-pqlib
 --with-libpqlib
 --without-libpqlib
 --with-ms/libpqlib
 --without-ms/libpqlib

Gem files will remain installed in /home/user/.rvm/gems/ruby-1.9.2-preview3/gems/pg-0.9.0 for inspection.

Results logged to /home/user/.rvm/gems/ruby-1.9.2-preview3/gems/pg-0.9.0/ext/gem_make.out

오류가 무엇인지 모르겠습니다 …

답변

sudo apt-get install libpq-dev

gem install pg  --   --with-pg-lib=/usr/lib   

Building native extensions.  This could take a while...
Successfully installed pg-0.13.1
1 gem installed
Installing ri documentation for pg-0.13.1...
Installing RDoc documentation for pg-0.13.1...  

apt-get install libpq-dev

sudo apt-get install libpq-dev

sudo apt-get install libpq-dev

gem install pg  --   --with-pg-lib=/usr/lib 

sudo apt-get install libpq-dev build-essential

sudo apt-get install postgresql
sudo apt-get install postgresql-client libpq5 libpq-dev

# for rvm (single user)
mv ~/.rvm/usr/lib ~/.rvm/usr/lib_rvm

# for rvm (multi-user)
mv /usr/local/rvm/usr/lib /usr/local/rvm/usr/lib_rvm

gem install pg  --   --with-pg-lib=/usr/lib