hi, i try to compile boost 1.35.0 with mingw 3.4.5, bjam 3.1.16 and winxp sp2. so i created a *.BAT-file like follows: @echo off SETLOCAL SET MINGW=C:\Development_Compiler\MinGW SET PYTHN=C:\Development_Compiler\Python25 SET BUILD=C:\Development_Libs\Boost_v1.35.0 SET path=C:\WINDOWS;C:\WINDOWS\system32;%MINGW%\Bin cls bjam.exe -a "-sTOOLS=mingw" "-sGCC_ROOT_DIRECTORY=%MINGW%" "-sPYTHON_ROOT=%PYTHN%" "-sPYTHON_VERSION=2.5" --link=static --runtime-link=static --threading=single --optimization=on --toolset=gcc --build-dir=%BUILD% --build-type=complete install ENDLOCAL for builing boost 1.34.1 (bjam 3.1.15) this works well and i get a bunch of *.A-files (*). but with combination named above i get no *.A-files, but *.LIBs. is there a different library naming than described in http://www.boost.org/doc/libs/1_35_0/more/getting_started/windows.html#libra... ? regardless of "--threading=single" i also get many "libboost...mt...lib"-files. why ("--build-type=complete" covers "--threading=single"?) ? thank you, daniel (*) i didn't tested it over again, but the BAT-file is always the same