Ruby gem installation error after OSX Yosemite and Xcode 6 installation

Question

I tried installing a gem like I did before installing Yosemite, but now I\'m getting an error:

/Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:159:in `synchronize\': E

Answer 1

I had a same problem when I installed mysql via bitnami, Looks like you do not have all required mysql libraries .

I used brewsh and reinstalled mysql by

brew install mysql

sudo gem install mysql2

Also you need to load the dynamic library in your .profile file in the home directory, you can achieve this by adding these lines in .profile file .

export PATH=$PATH:$MYSQL
export DYLD_LIBRARY_PATH=/Applications/mysql/lib:$DYLD_LIBRARY_PATH

In the above two lines of code

/Applications/mysql/lib , is the path where your mysql libraries are installed , in yours it might be different please check and use as per your environment

Answer 2

I had the same issue. Downgrading to ruby 1.9.3 with RVM fixed the issue for me on 10.10 Yosemite - here are the steps taken:

$ \curl -sSL https://get.rvm.io | bash
$ source /Users/shedali/.rvm/scripts/rvm
$ rvm install 1.9.3 --with-gcc=clang
$ gem install [packagename]