Constructing Custom Heroku Ruby/Rails Buildpack for Web App Using Taglib-Ruby
问题 I've built an application using Rails 3.2 that makes use of the taglib-ruby gem. I need to upload this app to Heroku, but it cannot successfully build the taglib-ruby gem because the associated C++ taglib library needs to be installed on the machine. Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. /usr/local/bin/ruby extconf.rb checking for main() in -lstdc++... yes checking for main() in -ltag... no You must have taglib installed in order to use taglib-ruby.