How to install "pg" gem for rails 3 on ubuntu "can not build native extensions"

Question

Possible Duplicate:
Unable to install pg gem on ubuntu - Can’t find the 'libpq-fe.h header

Whenever I try to install the pg gem for my Rails project, it gives me Error "failed to build native extensions".

I already used a couple of tricks but failed.

score 2 · Answer 1 · edited Oct 30 '12 at 06:25

2

Try this:

$ sudo apt-get install ruby-dev build-essential

or:

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

then:

$ sudo gem install pg

edited Oct 30 '12 at 06:25

the Tin Man

answered Oct 30 '12 at 05:51

Dipak Panchal

You also need to add `libpq-dev` to that list, then it should work to install the gem as asked. – Joachim Isaksson Oct 30 '12 at 05:56

score 1 · Answer 2 · edited Oct 30 '12 at 06:24

1

This is a traditional problem if you are installing the pg gem for Rails and getting this error.

Run the following commands on your terminal:

edited Oct 30 '12 at 06:24

the Tin Man

answered Oct 30 '12 at 05:59

score 0 · Answer 3 · answered Oct 30 '12 at 05:52

0

Edit your Gemfile and add gem pg to the file. It will make sense to also comment out the gem sqlite3 instead.

Save the file and then issue the bundle install command.

answered Oct 30 '12 at 05:52

tokhi

1

SQLite3 is not a replacement for PostgreSQL. [See here](http://www.postgresql.org/about/) – nurettin Oct 30 '12 at 05:58
@pwned: thanks for the comment. You are right, if we compare the capabilities of both then PostgreSQL wins http://database-management-systems.findthebest.com/compare/43-53/PostgreSQL-vs-SQLite. I thought the user might want to use only one DBMS for data storage. – tokhi Oct 30 '12 at 07:10

vijikumar · Answer 4 · 2012-10-30T07:04:48.813

0

Try with this. It will work..

sudo apt-get install postgresql-8.4

sudo apt-get install pgadmin3

edited Oct 30 '12 at 07:04

answered Oct 30 '12 at 06:58

vijikumar

4 Answers4