title: CMake Error: The following variables are used in this project, but they are set to NOTFOUND
body: <p>I am trying to configure the <code>whalebot</code> crawler with the tar file <code>whalebot-0.02.00.tar.gz</code>. I have extracted it correctly with:</p>
  
  <pre><code>root@Admin1:~/dls# tar xvzf whalebot-0.02.00.tar.gz
  </code></pre>
  
  <p>After that I want to configure it with:</p>
  
  <pre><code>root@Admin1:~/dls/whalebot# ./configure
  </code></pre>
  
  <p>It gives me error:</p>
  
  <blockquote>
    <p>bash: ./configure: No such file or directory</p>
  </blockquote>
  
  <p>also I have run the command:</p>
  
  <pre><code>root@Admin1:~/dls/whalebot# cmake ./
  </code></pre>
  
  <p>It gives me the following result:</p>
  
  <pre><code>root@Admin1:~/dls/whalebot# cmake ./
  -- The C compiler identification is GNU
  -- The CXX compiler identification is GNU
  -- Check for working C compiler: /usr/bin/gcc
  -- Check for working C compiler: /usr/bin/gcc -- works
  -- Detecting C compiler ABI info
  -- Detecting C compiler ABI info - done
  -- Check for working CXX compiler: /usr/bin/c++
  -- Check for working CXX compiler: /usr/bin/c++ -- works
  -- Detecting CXX compiler ABI info
  -- Detecting CXX compiler ABI info - done
  -- Boost version: 1.44.0
  -- Found the following Boost libraries:
  -- filesystem
  -- system
  -- thread
  -- program_options
  -- date_time
  CMake Warning (dev) at webspider/CMakeLists.txt:25 (link_directories):
  This command specifies the relative path
  
  ../statsem_string/bin
  
  as a link directory.
  
  Policy CMP0015 is not set: link_directories() treats paths relative to the
  source dir. Run "cmake --help-policy CMP0015" for policy details. Use the
  cmake_policy command to set the policy and suppress this warning.
  This warning is for project developers. Use -Wno-dev to suppress it.
  
  CMake Warning (dev) at webspider/CMakeLists.txt:25 (link_directories):
  This command specifies the relative path
  
  ../3dparty/google-url
  
  as a link directory.
  
  Policy CMP0015 is not set: link_directories() treats paths relative to the
  source dir. Run "cmake --help-policy CMP0015" for policy details. Use the
  cmake_policy command to set the policy and suppress this warning.
  This warning is for project developers. Use -Wno-dev to suppress it.
  
  CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
  Please set them or make sure they are set and tested correctly in the CMake files:
  HTMLCXX_LIBRARY
  linked by target "whalebot" in directory /root/dls/whalebot/webspider
  
  -- Configuring incomplete, errors occurred!
  </code></pre>
  
  <p>How do I proceed?</p>