Hi, I am trying to build boost.threads 1.32 statically with struct alignment set to 1. I dug up from the documentation that this should do the trick: bjam -sTOOLS=vc-7_1 "-sBUILD=debug <struct-alignment>1" -a -d+2 however, I don't see the alignment switch '/Zp1' on the command line : "cl" /Zm800 -nologo /EHsc -c -DBOOST_THREAD_LIB_NAME=boost_thread -DBOOST_THREAD_BUILD_LIB=1 /Z7 /Od /Ob0 /EHsc /GR /MDd /Op Zc:forScope /Zc:wchar_t -I"..\..\..\bin\boost\libs\thread\build" -I"C:\Program Files\Microsoft Visual Studio .NET 2003\VC7\include" I"G:\boost_1_32_0" -Fo"..\..\..\bin\boost\libs\thread\build\libboost_thread.lib\vc-7_1\debug\threading-multi\tss.obj" -Tp"..\..\..\libs\thread\build\..\src\tss.cpp" Is there something I am missing ? -seb