RVM Ruby 1.9.1 install can't locate zlib but its runtime and dev library are there
Use rvm to install zlib
https://rvm.io/packages/zlib/
rvm package install zlib
rvm remove 1.9.1
rvm install 1.9.1 -C --with-zlib-dir=$rvm_path/usr
Edit: The rvm package command was renamed to rvm pkg in v1.6.25.
You need to install zlib before compiling/installing Ruby. If you didn't do this, make sure to remove everything related to Ruby 1.9.1 from your ~/.rvm folder (so that it will be build from scratch).
Install zlib using your favorite package manager:
sudo apt-get install zlib1g-dev
You might also want to install the following packages as they are required by tools like OpenSSL,
Nokogiri, IRB or SQLite:
libssl-dev libreadline6-dev libxml2-dev libsqlite3-dev
Then install Ruby 1.9.1 again (nowadays I would suggest to use a newer version):
rvm install 1.9.1
Watch for "compiling ...". This should take a while. If it doesn't, then Ruby 1.9.1 might still be cached
in your ~/.rvm folder.
I encountered this problem when trying to:
gem install gruff
What actually worked for me (Ubunut 10.10, ruby MRI 1.8.7) is:
- reading the rvm notes and installing the dependencies for my ruby version
sudo apt-get install build-essential bison openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev autoconf
- then following closely the steps described in https://rvm.io/packages/zlib/
- rvm package install zlib
- rvm remove 1.8.7
- rvm install 1.8.7
So basically: just follow the rvm manual