Dear Boosters, I am trying to keep some backward compatibility (for some while) for the boost libraries we use in our codes (ublas for example), and I find that the addition below to boost/version.hpp helps a lot with readability in the code instead of using // BOOST_VERSION % 100 is the sub-minor version // BOOST_VERSION / 100 % 1000 is the minor version // BOOST_VERSION / 100000 is the major version ------------------- define BOOST_VERSION_MAJOR 1 #define BOOST_VERSION_MINOR 33 #define BOOST_VERSION_SUBMINOR 1 #define BOOST_MAKE_VERSION( a,b,c ) ((a)*100000+(b)*100+(c)) #define BOOST_VERSION \ BOOST_MAKE_VERSION(BOOST_VERSION_MAJOR,BOOST_VERSION_MINOR,BOOST_VERSION_SUBMINOR) #define BOOST_IS_VERSION(a,b,c) ( BOOST_VERSION >= BOOST_MAKE_VERSION(a,b,c) ) ---------------------------- In order to test the current version of boost: #if BOOST_IS_VERSION(1,33,0) ... write the code according to the API >= 1.33.0 #else ... write the code according to the API < 1.33.0 #endif would that be of interest ? Best regards C.