+ FIND_PACKAGE(Boost COMPONENTS filesystem system signals date_time thread regex program_options REQUIRED)
+ IF(Boost_FOUND)
+ ADD_DEFINITIONS(-DBOOST_FILESYSTEM_VERSION=3)
+ ADD_DEFINITIONS(-DBOOST_MAYOR_VERSION=${Boost_MAJOR_VERSION})
+ ADD_DEFINITIONS(-DBOOST_MINOR_VERSION=${Boost_MINOR_VERSION})