title: Is it possible to make Microsoft build.exe include sources from remote directories?
body: <p>Adding source files more than one directory away (e.g. ../../source.cpp or ../../../somewhere_else/source.cpp, vs. just source.cpp or ../source.cpp) to the SOURCES= declaration in a WDK/DDK build yields the following error:</p>
  
  <pre><code>Ignoring invalid directory prefix in SOURCES= entry
  </code></pre>
  
  <p>Is it possible to include remote source files in a build?</p>