Juergen Hunold schrieb:
Could you please post your command line ? Maybe your build is picking up the 32bit version... Those errors are impossible to debug without the _exact_ command lines executed (and response files on windows ...)
Hello Juergen, thanks for your reply. I use the following command line to build the boost libraries: bjam --toolset=msvc --address-model=64 stage The resulting dlls in the stage\lib directory are 32-bit. They have the same size as the dlls built without the address-model parameter. And the dependency walker shows direct references to dlls inside the windows\syswow64 directory which is the system directory for the 32-bit dlls. (btw. 64-bit dlls resides in the system32 directory, that's the special kind of logic used by microsoft ;) I really need 64-bit boost libraries. If there is no official way, i have to build my own visual studio projects... thanks in advance -- Sebastian Pfützner s.pfuetzner@onlinehome.de ICQ-ID: 39965036