Hello, <br><br>I am trying to install ppl in my ubuntu 12.04. But &quot;./configure&quot;  gives me an error,<br><br><u> c++ preprocessor &quot;lib/cpp&quot; fails sanity check</u><br><br>I don&#39;t know what to do with it. I have my gcc  version 4.7.2, which should be Ok to compile PPL, right?<br>
<br>The ubuntu is run on the virtual machine.<br><br>Do you know how to solve this problem? A quick answer would be most appreciated. The installation of PPL is necessary for my artifacts submission for a conference whose deadline is the 17th. <br>
<br>Thank you for your help. <br><br>Zhoulai (Zell)<br><br>p.s<br>the confiig.log has a strange line<br>&quot; configure: 4332: gcc --version &gt;&amp; 5&quot; <br>which is strange because ppl documents say that it suffices to have a gcc later than 4.0.2 <br>