Looking at: http://www.boost.org/development/requirements.html#Directory_structure I see that sub-directory 'build' should contain 'Library build files such as a Jamfile'. In SVN HEAD I also see: libs/program_options/CMakeLists.txt Now, cmake is clearly build system, so that file is in violation of the above guideline. May I ask to either: 1. Have cmake folks to fix this? 2. Have the guideline adjusted, with associated moving of Jamfiles out of 'build' directory and removal of 'build' directories that become empty as result? The background is that I plan some work that might require adding Jamfiles for header-only libraries and clearly having Jamfiles in build subdir while having CMakeLists.txt one directory higher is gonna be mightly confusing. Thanks, Volodya