Installing PG gem on OS X - failure to build native extension

Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.

Here's how I fixed it (with homebrew):

Install another build of Xcode Tools (typing brew update in the terminal will prompt you to update the Xcode build tools)
brew update
brew install postgresql

After that gem install pg worked for me.

If you are using Ubuntu try to install following lib file

sudo apt-get install libpq-dev

and then

gem install pg

worked for me.

I am using OS X Mavericks (version 10.9)

and when I run the above I got the following message: If builds of PostgreSQL 9 are failing and you have version 8.x installed.

So I run the following command:

ARCHFLAGS="-arch x86_64" gem install pg

and this worked for me, I hope this helps someone :)

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