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POIs it possible to control which libraries apache uses?
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  1. POIs it possible to control which libraries apache uses?
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    copied!<p>Okay, so I had an <a href="https://stackoverflow.com/questions/2110588/getting-invalid-image-error-in-django-but-pil-is-installed-and-passes-all-tests">earlier problem with PIL</a> that is still unresolved. Someone else had this problem and had success by <a href="http://salamand.wordpress.com/2009/08/25/problem-uploading-image-file-to-satchmo/" rel="nofollow noreferrer">removing the old JPEG library</a>. I can't really do that on my machine, however, as it's RHEL and so many things are dependent on libjpeg and libjpeg-devel (when I tried yum remove libjpeg just to see, there were a total of 252 packages that would have been removed!) </p> <p>I have jpeg-8 installed in /usr/local/lib. It's correctly being used by python, but <em>not</em> by apache. Here's a list from lsof:</p> <pre><code>COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME httpd xxxxx root mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 python xxxxx jordan DEL REG 253,3 xxxxx63 /usr/local/lib/libjpeg.so.8.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 httpd xxxxx apache mem REG 253,3 xxxxx0 xxxxx34 /usr/lib64/libjpeg.so.62.0.0 </code></pre> <p>So, here's what I'm wondering. Given that I can't uninstall libjpeg-6b, is there any way I can <em>force</em> apache to use libjpeg-8 instead?</p> <p>Okay, so a recent run of <code>lsof</code> shows that apache is now loading libjpeg.so.8.0.0 <strong>also</strong> but still running into errors, which suggests that it is still using the 62 version. Is there some way to give the 8 version precedence instead?</p> <p><strong>UPDATE #1</strong></p> <p>Running <code>ldd</code> against all of the modules in lib64/modules came up with no reference to libjpeg. Running <code>ldd</code> on PIL's _imaging.so file showed that it is using the new version of libjpeg. I'm pretty sure there is only one version of PIL on my system -- I've done a pretty thorough search.</p> <p>Does anyone out there know which programs or modules tied to httpd or python are likely to load libjpeg? I know that <em>something</em> is loading it via apache since it is showing up in <code>lsof</code>.</p>
 

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