Dear, recently I started to use boost::log api. I work on win7 machine and use mingw-x86-64 compiler ver. 4.5.4. Now I got trunk version for boost and boost::log api and encountered problems with compilation. Problem is with: C:\Users\sandro\Documents\progs\opt\cpp_libs\boost_trunk>bjam --with-log -a toolset=gcc target-os=windows variant=release link=shared runtime-link=sha red define=BOOST_ALL_DYN_LINK define=BOOST_LOG_USE_CHAR stage C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\generators.jam:1085: in ensure-type from module generators error: target { simple_event_log.mc. } has no type C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\generators.jam:1319: in generators.construct from module generators C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:1495: in construct from module object(typed-target)@354 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:1298: in object(typed-target)@354.generate from module objec t(typed-target)@354 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@834 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:704: in object(main-target)@834.generate from module object( main-target)@834 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:258: in object(project-target)@343.generate from module obje ct(project-target)@343 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:848: in targets.generate-from-reference from module targets C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:1217: in generate-dependencies from module object(install-ta rget-class)@97 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:1269: in object(install-target-class)@97.generate from modul e object(install-target-class)@97 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@808 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:704: in object(main-target)@808.generate from module object( main-target)@808 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:848: in targets.generate-from-reference from module targets C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:1217: in generate-dependencies from module object(top-level- target)@106 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:1269: in alias-target-class.generate from module object(top- level-target)@106 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk\boostcpp.jam:409: in build-multiple from module object(top-level-target)@106 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk\boostcpp.jam:373: in object(top-level-target)@106.generate from module object(top-level-targe t)@106 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:732: in generate-really from module object(main-target)@812 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2/build\targets.jam:704: in object(main-target)@812.generate from module object( main-target)@812 C:/Users/sandro/Documents/progs/opt/cpp_libs/boost_trunk/tools/build/v2\build-system.jam:736: in load from module build-system C:\Users\sandro\Documents\progs\opt\cpp_libs\boost_trunk\tools\build\v2/kernel\modules.jam:283: in import from module modules C:\Users\sandro\Documents\progs\opt\cpp_libs\boost_trunk\tools\build\v2/kernel/bootstrap.jam:142: in boost-build from module C:\Users\sandro\Documents\progs\opt\cpp_libs\boost_trunk\boost-build.jam:17: in module scope from module To correct the error in the spirit of link ...( unfortunately I can't find it now ) 1. boost_trunk\tools\build\v2\tools\mc.jam: line 41: actions compile { # mc $(MCFLAGS) -h "$(<[1]:DW)" -r "$(<[2]:DW)" "$(>:W)" # --- replace mc with windmc --- windmc $(MCFLAGS) -h "$(<[1]:DW)" -r "$(<[2]:DW)" "$(>:W)" } 2. boost_trunk\tools\build\v2\tools\gcc.jam: line 28: addin additional import import fortran ; import mc ; After compile starts but got errors in compile time. All compile message is attached in compile.log I use trunk versions from date 18.01.2012 for both, boost and boost::log api. Best regards, Sandro.