From: Brian Candler <b.candler@...>
Date: 2008-10-10T01:47:16+09:00
Subject: Re: gem_original_require zlib problem

>> Check you have a package called something like 'zlib-devel' and rebuild 
>> ruby.
> 
> I have been wrestling with this issue as well. How do I check for a 
> package, and if I don't have it, then what do i do?

Depends on what platform you're using. For example:

On CentOS:
rpm -qa | grep zlib
yum install zlib-devel

On Ubuntu:
dpkg-query -l | grep zlib
apt-get install zlib1g-dev
# or something like that - I don't have an Ubuntu box handy right now
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