Dear Andreas and Marcel, I checked my Visual Studio 13 Update : it is Update 5, so on this side it is ok. But Andreas you were perfectly right : as soon as I get Boost release 1.56, compilation completes with no warning and no error. I retry Boost 1.62 but it still does not work : it claims for a msvc internal error C1001. Sorry I won't keep investigating since I do not have time for that. I get at least one that works and for now it is enough to help me move on on my project matters that are quite far for boost. I greatly thank both of you for your help, I really appreciate. Best regards, Thierry Note: I do no know why I could not login with my email/password and reply directly on http://boost.2283326.n4.nabble.com/build-of-datetime-library-fails-td468 9472.html#a4689486