title: Can't find libavcodec when running ./configure for vlc
body: <p>I am trying to run './configure' for vlc on ubuntu 10.04. But it can't find libavcode libraries for some reason.  I have check /usr/lib, it has the libraries, why ./configure can't find it?</p>
  
  <p>This is the error from './configure':</p>
  
  <pre><code>checking for AVCODEC... no
  configure: error: Could not find libavcodec or libavutil. Use --disable-avcodec to ignore this error.
  </code></pre>
  
  <p>But I already install libavcodec-dev, but it still fails:</p>
  
  <pre><code>$ sudo apt-get install libavcodec-dev
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  libavcodec-dev is already the newest version.
  0 upgraded, 0 newly installed, 0 to remove and 201 not upgraded.
  </code></pre>
  
  <p>I have checked '/usr/lib', I see the libavcodec.so:</p>
  
  <pre><code>-rw-r--r-- 1 root root 7339558 2010-03-04 04:42 libavcodec.a
  lrwxrwxrwx 1 root root      21 2010-06-26 00:38 libavcodec.so -&gt; libavcodec.so.52.20.1
  lrwxrwxrwx 1 root root      21 2010-05-10 22:30 libavcodec.so.52 -&gt; libavcodec.so.52.20.1
  -rw-r--r-- 1 root root 5560152 2010-03-04 04:54 libavcodec.so.52.20.1
  -rw-r--r-- 1 root root 1316312 2010-03-04 04:42 libavformat.a
  lrwxrwxrwx 1 root root      22 2010-06-26 00:38 libavformat.so -&gt; libavformat.so.52.31.0
  lrwxrwxrwx 1 root root      22 2010-05-10 22:30 libavformat.so.52 -&gt; libavformat.so.52.31.0
  -rw-r--r-- 1 root root  694880 2010-03-04 04:42 libavformat.so.52.31.0
  -rw-r--r-- 1 root root   85164 2010-03-04 04:42 libavutil.a
  lrwxrwxrwx 1 root root      20 2010-06-26 00:38 libavutil.so -&gt; libavutil.so.49.15.0
  lrwxrwxrwx 1 root root      20 2010-05-10 22:30 libavutil.so.49 -&gt; libavutil.so.49.15.0
  -rw-r--r-- 1 root root   47296 2010-03-04 04:54 libavutil.so.49.15.0
  </code></pre>
  
  <p>Thank you for any help.</p>