atom.xml

<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">

  <title><![CDATA[chuckg.notes]]></title>
  <link href="http://chuckg.org/atom.xml" rel="self"/>
  <link href="http://chuckg.org/"/>
  <updated>2013-03-25T22:30:21-07:00</updated>
  <id>http://chuckg.org/</id>
  <author>
    <name><![CDATA[chuckg]]></name>
    
  </author>
  <generator uri="http://octopress.org/">Octopress</generator>

  
  <entry>
    <title type="html"><![CDATA[ruby-1.9.3 and ruby-debug]]></title>
    <link href="http://chuckg.org/blog/2012/03/24/ruby-1-dot-9-3-and-ruby-debug/"/>
    <updated>2012-03-24T17:52:00-07:00</updated>
    <id>http://chuckg.org/blog/2012/03/24/ruby-1-dot-9-3-and-ruby-debug</id>
    <content type="html"><![CDATA[<p>To get <code>ruby-debug</code> working with <code>ruby-1.9.3-p0</code> you have to use some as yet
unpublished versions of <code>ruby-debug-base19</code> (0.11.26) and it&#8217;s dependency,
<code>linecache19</code> (0.5.13).  Additionally, you&#8217;ll need to apply the aptly named
&#8220;debug&#8221; patch to <code>ruby-1.9.3-p0</code>.  I don&#8217;t recall the specific reason the gems
are not yet available on <a href="http://rubygems.org">rubygems.org</a> (as of
2012-02-22), but until such time, here&#8217;s how you get <code>ruby-debug</code> working with
version <code>ruby-1.9.3-p0</code>.</p>

<p><em>Note</em>: If you&#8217;re not using <code>rvm</code>, shame on you. You&#8217;ll need to apply the patch
manually, which I won&#8217;t detail.  The patch can be found
<a href="https://github.com/ruby/ruby/pull/47">here</a>.</p>

<p>Apply the &#8220;debug&#8221; patch:</p>

<pre><code>$ rvm reinstall 1.9.3-p0 --patch debug --force-autoconf
</code></pre>

<p>Point your favorite editor at your <code>Gemfile</code> and add:</p>

<pre><code>gem 'ruby-debug19', :require =&gt; false
gem 'ruby-debug-base19', :git =&gt; 'https://github.com/tribune/ruby-debug-base19.git', :require =&gt; false
gem 'linecache19', :git =&gt; 'git@github.com:chuckg/linecache19.git', :branch =&gt; "0_5_13/dependencies", :require =&gt; false
</code></pre>

<p>And now the secret sauce to allow <code>ruby-debug-base19</code> to compile correctly:</p>

<pre><code>$ bundle config build.ruby-debug-base19 --with-ruby-include=$rvm_path/src/ruby-1.9.3-p0/
</code></pre>

<p>Without the above command you&#8217;ll receive the
<code>Gem::Installer::ExtensionBuildError</code> error listed below. If you&#8217;re working
with a team, it may be useful to check the bundle config into your repository.
Check out <code>bundle help config</code> for more details.</p>

<h5>rdebug</h5>

<p>The caveat to using git as the gem source for our dependencies is that they
are installed in a separate (non-standard) gem path, causing <code>rdebug</code> to puke
when it can&#8217;t find them. <code>bundler</code> to the rescue:</p>

<pre><code>$ bundle exec rdebug ...
</code></pre>

<p>This executes <code>rdebug</code> within the context of the bundle, thereby including the
necessary dependencies.</p>

<h2>Common errors:</h2>

<p>For reference (and the glory of search) here are some common errors you might have seen during your journey here.</p>

<h5>ruby-debug</h5>

<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
</pre></td><td class='code'><pre><code class='bash'><span class='line'><span class="nv">$ </span>bundle install
</span><span class='line'>...
</span><span class='line'>Could not find rbx-require-relative-0.0.6 in any of the sources
</span></code></pre></td></tr></table></div></figure>


<p><em>You&#8217;re still using the <code>ruby-debug</code> gem, not <code>ruby-debug19</code>.</em></p>

<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
</pre></td><td class='code'><pre><code class='bash'><span class='line'><span class="nv">$ </span>rdebug -Itest <span class="nb">test</span>/unit/model_test.rb
</span><span class='line'>/Users/rubyist/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in <span class="sb">`</span>to_specs<span class="s1">&#39;: Could not find linecache19 (&gt;= 0.5.11) amongst [...] (Gem::LoadError)</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:771:in `block in activate_dependencies&#39;</span>
</span><span class='line'>  from /Users/rubyist/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:760:in <span class="sb">`</span>each<span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:760:in `activate_dependencies&#39;</span>
</span><span class='line'>  from /Users/rubyist/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:744:in <span class="sb">`</span>activate<span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/rubygems.rb:1209:in `gem&#39;</span>
</span><span class='line'>  from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/bin/rdebug:18:in <span class="sb">`</span>&lt;main&gt;<span class="err">&#39;</span>
</span></code></pre></td></tr></table></div></figure>


<p><em>Trying using: <code>bundle exec rdebug ...</code></em></p>

<h5>ruby-debug-base19</h5>

<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
<span class='line-number'>10</span>
<span class='line-number'>11</span>
<span class='line-number'>12</span>
<span class='line-number'>13</span>
</pre></td><td class='code'><pre><code class='bash'><span class='line'>Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
</span><span class='line'>
</span><span class='line'>        /Users/rubyist/.rvm/rubies/ruby-1.9.3-p0/bin/ruby extconf.rb
</span><span class='line'>checking <span class="k">for </span>rb_method_entry_t.called_id in method.h... no
</span><span class='line'>checking <span class="k">for </span>rb_control_frame_t.method_id in method.h... no
</span><span class='line'>extconf.rb:16:in <span class="sb">`</span>block in &lt;main&gt;<span class="s1">&#39;: break from proc-closure (LocalJumpError)</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/ruby_core_source-0.1.5/lib/ruby_core_source.rb:18:in `call&#39;</span>
</span><span class='line'>  from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/ruby_core_source-0.1.5/lib/ruby_core_source.rb:18:in <span class="sb">`</span>create_makefile_with_core<span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from extconf.rb:32:in `&lt;main&gt;&#39;</span>
</span><span class='line'>
</span><span class='line'>
</span><span class='line'>An error occured <span class="k">while </span>installing ruby-debug-base19 <span class="o">(</span>0.11.26<span class="o">)</span>, and Bundler cannot <span class="k">continue</span>.
</span><span class='line'>Make sure that <span class="sb">`</span>gem install ruby-debug-base19 -v <span class="s1">&#39;0.11.26&#39;</span><span class="sb">`</span> succeeds before bundling.
</span></code></pre></td></tr></table></div></figure>


<p><em>This is fixed by adding the build flags to your bundle config.</em></p>

<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
<span class='line-number'>10</span>
<span class='line-number'>11</span>
<span class='line-number'>12</span>
<span class='line-number'>13</span>
<span class='line-number'>14</span>
<span class='line-number'>15</span>
<span class='line-number'>16</span>
<span class='line-number'>17</span>
<span class='line-number'>18</span>
<span class='line-number'>19</span>
<span class='line-number'>20</span>
<span class='line-number'>21</span>
<span class='line-number'>22</span>
<span class='line-number'>23</span>
<span class='line-number'>24</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span> <span class="p">:</span><span class="mo">001</span> <span class="o">&gt;</span> <span class="nb">require</span> <span class="s1">&#39;ruby-debug&#39;</span>
</span><span class='line'><span class="ss">LoadError</span><span class="p">:</span> <span class="n">dlopen</span><span class="p">(</span><span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="n">debug</span><span class="o">-</span><span class="n">base19</span><span class="o">-</span><span class="mi">0</span><span class="o">.</span><span class="mi">11</span><span class="o">.</span><span class="mi">25</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">ruby_debug</span><span class="o">.</span><span class="n">bundle</span><span class="p">,</span> <span class="mi">9</span><span class="p">):</span> <span class="no">Symbol</span> <span class="ow">not</span> <span class="ss">found</span><span class="p">:</span> <span class="n">_ruby_threadptr_data_type</span>
</span><span class='line'>  <span class="no">Referenced</span> <span class="ss">from</span><span class="p">:</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="n">debug</span><span class="o">-</span><span class="n">base19</span><span class="o">-</span><span class="mi">0</span><span class="o">.</span><span class="mi">11</span><span class="o">.</span><span class="mi">25</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">ruby_debug</span><span class="o">.</span><span class="n">bundle</span>
</span><span class='line'>  <span class="no">Expected</span> <span class="k">in</span><span class="p">:</span> <span class="n">flat</span> <span class="n">namespace</span>
</span><span class='line'> <span class="k">in</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="n">debug</span><span class="o">-</span><span class="n">base19</span><span class="o">-</span><span class="mi">0</span><span class="o">.</span><span class="mi">11</span><span class="o">.</span><span class="mi">25</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">ruby_debug</span><span class="o">.</span><span class="n">bundle</span> <span class="o">-</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="n">debug</span><span class="o">-</span><span class="n">base19</span><span class="o">-</span><span class="mi">0</span><span class="o">.</span><span class="mi">11</span><span class="o">.</span><span class="mi">25</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">ruby_debug</span><span class="o">.</span><span class="n">bundle</span>
</span><span class='line'>  <span class="n">from</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">activesupport</span><span class="o">-</span><span class="mi">3</span><span class="o">.</span><span class="mi">2</span><span class="o">.</span><span class="mi">1</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">active_support</span><span class="o">/</span><span class="n">dependencies</span><span class="o">.</span><span class="n">rb</span><span class="p">:</span><span class="mi">251</span><span class="ss">:in</span> <span class="sb">`require&#39;</span>
</span><span class='line'><span class="sb"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `</span><span class="n">block</span> <span class="k">in</span> <span class="nb">require</span><span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:236:in `load_dependency&#39;</span>
</span><span class='line'>  <span class="n">from</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">activesupport</span><span class="o">-</span><span class="mi">3</span><span class="o">.</span><span class="mi">2</span><span class="o">.</span><span class="mi">1</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">active_support</span><span class="o">/</span><span class="n">dependencies</span><span class="o">.</span><span class="n">rb</span><span class="p">:</span><span class="mi">251</span><span class="ss">:in</span> <span class="sb">`require&#39;</span>
</span><span class='line'><span class="sb"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/ruby-debug-base19-0.11.25/lib/ruby-debug-base.rb:1:in `</span><span class="o">&lt;</span><span class="n">top</span> <span class="p">(</span><span class="n">required</span><span class="p">)</span><span class="o">&gt;</span><span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `require&#39;</span>
</span><span class='line'>  <span class="n">from</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">activesupport</span><span class="o">-</span><span class="mi">3</span><span class="o">.</span><span class="mi">2</span><span class="o">.</span><span class="mi">1</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">active_support</span><span class="o">/</span><span class="n">dependencies</span><span class="o">.</span><span class="n">rb</span><span class="p">:</span><span class="mi">251</span><span class="ss">:in</span> <span class="sb">`block in require&#39;</span>
</span><span class='line'><span class="sb"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:236:in `</span><span class="n">load_dependency</span><span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `require&#39;</span>
</span><span class='line'>  <span class="n">from</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="n">debug19</span><span class="o">-</span><span class="mi">0</span><span class="o">.</span><span class="mi">11</span><span class="o">.</span><span class="mi">6</span><span class="o">/</span><span class="n">cli</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="n">debug</span><span class="o">.</span><span class="n">rb</span><span class="p">:</span><span class="mi">5</span><span class="ss">:in</span> <span class="sb">`&lt;top (required)&gt;&#39;</span>
</span><span class='line'><span class="sb"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `</span><span class="nb">require</span><span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `block in require&#39;</span>
</span><span class='line'>  <span class="n">from</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">activesupport</span><span class="o">-</span><span class="mi">3</span><span class="o">.</span><span class="mi">2</span><span class="o">.</span><span class="mi">1</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">active_support</span><span class="o">/</span><span class="n">dependencies</span><span class="o">.</span><span class="n">rb</span><span class="p">:</span><span class="mi">236</span><span class="ss">:in</span> <span class="sb">`load_dependency&#39;</span>
</span><span class='line'><span class="sb"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `</span><span class="nb">require</span><span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from (irb):1</span>
</span><span class='line'><span class="s1"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/railties-3.2.1/lib/rails/commands/console.rb:47:in `start&#39;</span>
</span><span class='line'>  <span class="n">from</span> <span class="sr">/Users/</span><span class="n">rubyist</span><span class="o">/.</span><span class="n">rvm</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">ruby</span><span class="o">-</span><span class="mi">1</span><span class="o">.</span><span class="mi">9</span><span class="o">.</span><span class="mi">3</span><span class="o">-</span><span class="n">p0</span><span class="vi">@railsapp</span><span class="o">/</span><span class="n">gems</span><span class="o">/</span><span class="n">railties</span><span class="o">-</span><span class="mi">3</span><span class="o">.</span><span class="mi">2</span><span class="o">.</span><span class="mi">1</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">rails</span><span class="o">/</span><span class="n">commands</span><span class="o">/</span><span class="n">console</span><span class="o">.</span><span class="n">rb</span><span class="p">:</span><span class="mi">8</span><span class="ss">:in</span> <span class="sb">`start&#39;</span>
</span><span class='line'><span class="sb"> from /Users/rubyist/.rvm/gems/ruby-1.9.3-p0@railsapp/gems/railties-3.2.1/lib/rails/commands.rb:41:in `</span><span class="o">&lt;</span><span class="n">top</span> <span class="p">(</span><span class="n">required</span><span class="p">)</span><span class="o">&gt;</span><span class="s1">&#39;</span>
</span><span class='line'><span class="s1"> from script/rails:6:in `require&#39;</span>
</span></code></pre></td></tr></table></div></figure>


<p><em>Seeing this? You&#8217;re probably still using <code>ruby-debug-base19</code> (0.11.25) and <code>linecache19</code> (0.5.12).  Make sure you manually added the correct versions to your <code>Gemfile</code>.</em></p>
]]></content>
  </entry>
  
</feed>