therubyracer をインストールしているのに bundle install がこける事象に遭遇しました。 Gem::Ext::BuildError: ERROR: Failed to build gem native extension. /Users/t-fujiki/.rbenv/versions/2.1.0/bin/ruby extconf.rb checking for main() in -lpthread... yes checking for main() in -lobjc... yes checking for v8.h... no *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or h
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