Hi, I'm trying to build Boost.Coroutine, but unfortunately I get the following output after a call to "bjam coroutine". ------------------------------------------ G:\Programme\boost\boost svn\trunk>bjam coroutine warning: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. warning: skipping optional Message Passing Interface (MPI) library. note: to enable MPI support, add "using mpi ;" to user-config.jam. note: to suppress this message, pass "--without-mpi" to bjam. note: otherwise, you can safely ignore this message. Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (don't panic: this is a strictly optional feature). ...found 13 targets... ...updating 3 targets... compile-c-c++ bin.v2\libs\coroutine\build\msvc-9.0\release\threading-multi\corou tine.obj cl /Zm800 -nologo @"bin.v2\libs\coroutine\build\msvc-9.0\release\threading-m ulti\coroutine.obj.rsp" ...failed compile-c-c++ bin.v2\libs\coroutine\build\msvc-9.0\release\threading-m ulti\coroutine.obj... ...skipped <pbin.v2\libs\coroutine\build\msvc-9.0\release\threading-multi>boost_ coroutine-vc90-mt-1_35.dll for lack of <pbin.v2\libs\coroutine\build\msvc-9.0\re lease\threading-multi>coroutine.obj... ...skipped <pbin.v2\libs\coroutine\build\msvc-9.0\release\threading-multi>boost_ coroutine-vc90-mt-1_35.lib for lack of <pbin.v2\libs\coroutine\build\msvc-9.0\re lease\threading-multi>coroutine.obj... ...failed updating 1 target... ...skipped 2 targets... G:\Programme\boost\boost svn\trunk> ------------------------------------------ I have no clue as to what went wrong, since I simply can't deduce any error from this message. It just says "failed compile-c-c++", but there is no reason specified as to why that is. I'm compiling boost directly from the trunk svn. All I did was copy & paste the Boost.Coroutine library from the vault into the appropriate folders. I bet I did something wrong, but alas, I have no clue what. Would love to get some help on this matter. Regards, Thomas K.