title: "You must specify a valid --with-apxs path" when building mod_jk on ubuntu
body: <p>I'm trying to build <code>mod_jk</code> for Apache on ubuntu, but when I issue: </p>
  
  <pre><code>./configure --with-apxs=/usr/local/apache/bin/apxs 
  </code></pre>
  
  <p>I got the following error:</p>
  
  <pre><code>checking build system type... x86_64-unknown-linux-gnu
  checking host system type... x86_64-unknown-linux-gnu
  checking target system type... x86_64-unknown-linux-gnu
  checking for a BSD-compatible install... /usr/bin/install -c
  checking whether build environment is sane... yes
  /home/Arbi/Downloads/tomcat-connectors-1.2.40-src/native/scripts/build/unix/missing: Unknown `--is-lightweight' option
  Try `/home/Arbi/Downloads/tomcat-connectors-1.2.40-src/native/scripts/build/unix/missing --help' for more information
  configure: WARNING: 'missing' script is too old or missing
  checking for a thread-safe mkdir -p... /bin/mkdir -p
  checking for gawk... gawk
  checking whether make sets $(MAKE)... yes
  checking whether make supports nested variables... yes
  checking for test... /usr/bin/test
  checking for grep... /bin/grep
  checking for echo... /bin/echo
  checking for sed... /bin/sed
  checking for cp... /bin/cp
  checking for mkdir... /bin/mkdir
  need to check for Perl first, apxs depends on it...
  checking for perl... /usr/bin/perl
  could not find /usr/local/apache/bin/apxs
  configure: error: You must specify a valid --with-apxs path
  </code></pre>
  
  <p>Apache is already installed, and the directory <code>/usr/local/apache/bin/</code> exists, also <code>apxs</code> can be found there!
  Any idea why I'm having this error and how I can build <code>mod_jk</code>?</p>