gem install libv8 -v '5.3.332.38.1' ... Error installing libv8: ERROR: Failed to build gem native extension

Try this (requires Homebrew):

brew install v8gem install libv8 -- --with-system-v8

For a specific version:

gem install libv8 -v '5.3.332.38.1' -- --with-system-v8

but I'm assuming the version number would need to match whatever the Homebrew formula version of v8 is.

CodeHunter