如何使用rdiscount在Heroku？(How can I use rdiscount on H

我试图把一个小的测试应用的Heroku。 这里是应用程序和创业板文件：

应用程序：

require 'sinatra'
require 'haml'
require 'rdiscount'

set :markdown, :layout_engine => :haml, :layout => :layout


get '/' do 
  haml :index
end

get '/blog' do 
  markdown :test
end

的Gemfile：

source :rubygems
gem 'sinatra'
gem 'thin'
gem 'haml'
gem 'rdiscount'

力推的Heroku之前，我跑bundle install 。 但是，试图安装rdiscount宝石当推到Heroku的失败：

-----> 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

我不明白，rdiscount可能依赖于其他一些宝石或图书馆，这种依赖似乎并没有得到解决。 不过，我不知道如何解决这个问题。 你能给我如何得到这个工作一些建议吗？

Answer 1:

似乎有一个问题，使用Ruby 1.9.2在Heroku以及它如何可能字节认为int是。

尝试添加ruby "1.9.3"给你的Gemfile这样的：

source :rubygems
ruby "1.9.3"

gem 'sinatra'
gem 'thin'
gem 'haml'
gem 'rdiscount'

我自己的测试重现了1.9.2你的错误，并成功在1.9.3

文章来源: How can I use rdiscount on Heroku?