title: log4cpp compile error in one project but not another
body: <p>Note: I am new to c++. I had an existing solution with multiple projects that I was able to create a new project/.cpp file and include the .h file successfully(ie, compile and run the executable as expected) in one of the application's lower level files/projects. However, when I include the header for my file at the top level .cpp file/entry point for the application, several syntax errors are returned regarding log4cpp/category.hh. </p>
  
  <p>After some searching I it seems it might be caused by a conflict between log4cpp and boost (I have 1.55) based on some SO questions. The existing solution has the log4cpp includes, and my .h/.cpp has the boost\filesystem.hpp include. </p>
  
  <p>When I open category.hh, the errors point to 2 lines, each with 'Priority::ERROR'. The errors include "'constant': illegal token on right side of ::" and "function does not take 0 arguments".</p>
  
  <p>Looking at Priority.hh, they have a typedef enum {} for various levels of priority. When I hover the cursor over each enum, all of them have an associated integer value except for ERROR.</p>
  
  <p>What is strange to me is that the file I originally included my header in also has the log4cpp #includes, and does not throw any errors. The two locations are in different projects however.</p>
  
  <p>With my knowledge of c++ I'm just not sure of how to go about resolving/debugging this. Is there a certain project property/setting I need to look for that would cause it to fail in one project but not the other? Any help is greatly appreciated.</p>