Fix therubyracer/libv8 (0.12.1) installation on Mavericks

Question

OK, I’m at the end of my tether with this. There are a few similar questions but they all refer to therubyracer 0.10, and they mostly conclude that the problem can be fixed by u

Answer 1

I had this same problem when I upgraded from OSX Mountain Lion to OSX Mavericks. The patch level of ruby 1.8.7 apparently matters.

Upgrading from ruby-1.8.7-p354 to ruby-1.8.7-375 did the trick for me.

libv8 (3.16.14.3-x86_64-darwin-13) and the therubyracer (0.12.0) gems installed without problem.

assuming you use rbenv:

rbenv versions
  system
  * 1.8.7-p354
  2.0.0-rc2

rbenv uninstall 1.8.7-p354
rbenv install 1.8.7-p375

rbenv versions
  system
  * 1.8.7-p375
  2.0.0-rc2

bundle install

Answer 2

This issue no longer exists in the latest version of therubyracer (0.12.3).

bundle update therubyracer

Answer 3

I was able to get things going again by running gem install libv8 -v '3.16.14.3' -- --with-system-v8.

Reference: https://github.com/cowboyd/libv8/issues/120

Answer 4

It could be that rubygems is fetching the wrong binaries for your system.

Diagnosis:

• Compare the output of gem env platform to 'Kernel Version' under  > About This Mac > System Report > Software
• If those don't match (e.g. Kernel Version: 14.4.0 and x86_64-darwin-12) then RubyGems is grabbing the wrong version of therubyracer and libv8 for your system

Fix:

• short-term: bundle update therubyracer --platform=x86_64-darwin-14

Answer 5

OK, so this is now sorted.

For future people with the same problem, I was suffering from having ruby built against a previous installation of OS X.

Fixed by completely nuking rvm and starting from scratch, though I imagine you could just uninstall/reinstall the offending ruby.

More details on how the problem was solved here:

https://github.com/cowboyd/libv8/issues/120

Answer 6

I was able to proceed with ruby racer after rm Gemfile.lock Perhaps try this, which is easier than the RVM nuke option.

beforehand: I installed v8 via brew install v8, and then did gem install libv8 -v '3.16.14.3' -- --with-system-v8

and I am running 10.10 Yosemite