I'm running El Capitan (Fresh install) and a Rails 4.2.1 app with Ruby 2.2.2. I've ran into issues initially with installing libv8 and had to force an install with brew install v8 and gem install libv8 (version) with systemv8 as a flag. Bundle works fine and installs all the gem dependencies.
But when I go to load rails s or bundle exec thin start to launch my app server I get the following error.
dyld: lazy symbol binding failed: Symbol not found: __ZN2v82V821AddGCPrologueCallbackEPFvNS_6GCTypeENS_15GCCallbackFlagsEES1_
Referenced from: /Users/shakycode/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-15/2.2.0-static/therubyracer-0.12.2/v8/init.bundle
Expected in: flat namespace
dyld: Symbol not found: __ZN2v82V821AddGCPrologueCallbackEPFvNS_6GCTypeENS_15GCCallbackFlagsEES1_
Referenced from: /Users/shakycode/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-15/2.2.0-static/therubyracer-0.12.2/v8/init.bundle
Expected in: flat namespace
I'm googling and searching for answers but haven't come up with much that works so far. My other machine which was an upgrade to El Capitan works no problem, but this clean install is problematic with libv8/v8/therubyracer.
Any thoughts on how I can debug this one? I want to code.
I've just had this problem as well and I solved it by uninstalling and reinstalling therubyracer like so:
gem uninstall therubyracer
gem install therubyracer -v '0.12.2' -- --with-system-v8
For me it was triggered by an update to libv8 in the Gemfile. bundle install appeared to run without any problem after the update but I was seeing the same error as the OP whenever I tried to do anything on the command line.