小さなテストアプリを Heroku にプッシュしようとしています。アプリと Gem ファイルは次のとおりです。
アプリ:
require 'sinatra'
require 'haml'
require 'rdiscount'
set :markdown, :layout_engine => :haml, :layout => :layout
get '/' do
haml :index
end
get '/blog' do
markdown :test
end
Gemfile:
source :rubygems
gem 'sinatra'
gem 'thin'
gem 'haml'
gem 'rdiscount'
Heroku にプッシュする前に、 を実行しbundle install
ます。しかし、rdiscount gem をインストールしようとすると、Heroku へのプッシュが失敗します。
-----> Ruby/Rack app detected
-----> Installing dependencies using Bundler version 1.3.0.pre.5
Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin --deployment
Fetching gem metadata from http://rubygems.org/..........
Fetching gem metadata from http://rubygems.org/..
Using daemons (1.1.9)
Using eventmachine (1.0.0)
Using haml (3.1.7)
Using rack (1.4.3)
Using rack-protection (1.3.2)
installing rdiscount (2.0.7)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/usr/local/bin/ruby extconf.rb
checking for random()... yes
checking for srandom()... yes
checking for rand()... yes
checking for srand()... yes
checking size of unsigned long... long
checking size of unsigned int... int
no int with size 4
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/local/bin/ruby
--with-rdiscount-dir
--without-rdiscount-dir
--with-rdiscount-include
--without-rdiscount-include=${rdiscount-dir}/include
--with-rdiscount-lib
--without-rdiscount-lib=${rdiscount-dir}/lib
Gem files will remain installed in /tmp/build_3aijv3ga0dy1y/vendor/bundle/ruby/1.9.1/gems/rdiscount-2.0.7 for inspection.
Results logged to /tmp/build_3aijv3ga0dy1y/vendor/bundle/ruby/1.9.1/gems/rdiscount-2.0.7/ext/gem_make.out
An error occurred while installing rdiscount (2.0.7), and Bundler cannot continue.
Make sure that `gem install rdiscount -v '2.0.7'` succeeds before bundling.
!
! Failed to install gems via Bundler.
!
! Heroku push rejected, failed to compile Ruby/rack app
rdiscount が他の Gem またはライブラリに依存している可能性があることは理解していますが、この依存関係は解決されていないようです。ただし、この問題を解決する方法がわかりません。これを機能させる方法についてアドバイスをいただけますか?