try_compile(MFC_HAVE_MFC
      ${CMAKE_BINARY_DIR}
      ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFile.cxx
      CMAKE_FLAGS
      # XXX(bruening): this requests shared libs while we build DRstats with
      # static.  But, this try_compile() appends some default flags with /MDd
      # *after* what I put here so I can't pass 1 here and /MT (grrr).
      -DCMAKE_MFC_FLAG:STRING=2
      # XXX(bruening): we have our own variant of the standard FindMFC.cmake
      # so we can pass -D_UNICODE, as MBCS MFC support is not part of VS2013.
      COMPILE_DEFINITIONS -D_AFXDLL -D_UNICODE
      OUTPUT_VARIABLE OUTPUT)