I'm having a hard time getting bjam --v2 to function properly on my system; it's probably just something stupid, but here's the problem : download latest CVS-HEAD snapshot and install ./configure --with-libraries=regex,serialization,mpi copy bjam to /usr/local/bin cd $BOOST_ROOT/libs/date_time/test bjam --v2 resulting in a slew of errors like the following sample : "g++" -o "../../../bin.v2/libs/date_time/test/ testgreg_day.test/gcc-4.0.1/debug/testgreg_day" -Wl,--start-group "../../../bin.v2/libs/date_time/test/testgreg_day.test/gcc-4.0.1/ debug/testgreg_day.o" "../../../bin.v2/libs/date_time/build/gcc-4.0.1/ debug/link-static/libboost_date_time-gcc40-d-1_35.a" -Wl,--end- group -g ...failed gcc.link ../../../bin.v2/libs/date_time/test/ testgreg_day.test/gcc-4.0.1/debug/testgreg_day... ...skipped <p../../../bin.v2/libs/date_time/test/testgreg_day.test/ gcc-4.0.1/debug>testgreg_day.run for lack of <p../../../bin.v2/libs/ date_time/test/testgreg_day.test/gcc-4.0.1/debug>testgreg_day... gcc.link ../../../bin.v2/libs/date_time/test/testgreg_month.test/ gcc-4.0.1/debug/testgreg_month /usr/bin/ld: unknown flag: --start-group collect2: ld returned 1 exit status "g++" -o "../../../bin.v2/libs/date_time/test/ testgreg_month.test/gcc-4.0.1/debug/testgreg_month" -Wl,--start-group "../../../bin.v2/libs/date_time/test/testgreg_month.test/gcc-4.0.1/ debug/testgreg_month.o" "../../../bin.v2/libs/date_time/build/ gcc-4.0.1/debug/link-static/libboost_date_time-gcc40-d-1_35.a" - Wl,--end-group -g ...failed gcc.link ../../../bin.v2/libs/date_time/test/ testgreg_month.test/gcc-4.0.1/debug/testgreg_month... ...skipped <p../../../bin.v2/libs/date_time/test/testgreg_month.test/ gcc-4.0.1/debug>testgreg_month.run for lack of <p../../../bin.v2/libs/ date_time/test/testgreg_month.test/gcc-4.0.1/debug>testgreg_month... gcc.link ../../../bin.v2/libs/date_time/test/testgreg_year.test/ gcc-4.0.1/debug/testgreg_year /usr/bin/ld: unknown flag: --start-group collect2: ld returned 1 exit status "g++" -o "../../../bin.v2/libs/date_time/test/ testgreg_year.test/gcc-4.0.1/debug/testgreg_year" -Wl,--start-group "../../../bin.v2/libs/date_time/test/testgreg_year.test/gcc-4.0.1/ debug/testgreg_year.o" "../../../bin.v2/libs/date_time/build/ gcc-4.0.1/debug/link-static/libboost_date_time-gcc40-d-1_35.a" - Wl,--end-group -g ...failed gcc.link ../../../bin.v2/libs/date_time/test/ testgreg_year.test/gcc-4.0.1/debug/testgreg_year... ...skipped <p../../../bin.v2/libs/date_time/test/testgreg_year.test/ gcc-4.0.1/debug>testgreg_year.run for lack of <p../../../bin.v2/libs/ date_time/test/testgreg_year.test/gcc-4.0.1/debug>testgreg_year... ...skipped <p../../../bin.v2/libs/date_time/test/testdate_dll.test/ gcc-4.0.1/debug>testdate_dll for lack of <p../../../bin.v2/libs/ date_time/build/gcc-4.0.1/debug>libboost_date_time-gcc40-d-1_35.dylib... ...skipped <p../../../bin.v2/libs/date_time/test/testdate_dll.test/ gcc-4.0.1/debug>testdate_dll.run for lack of <p../../../bin.v2/libs/ date_time/test/testdate_dll.test/gcc-4.0.1/debug>testdate_dll... ...skipped <p../../../bin.v2/libs/date_time/test/ testdate_duration_dll.test/gcc-4.0.1/debug>testdate_duration_dll for lack of <p../../../bin.v2/libs/date_time/build/gcc-4.0.1/ debug>libboost_date_time-gcc40-d-1_35.dylib... ...skipped <p../../../bin.v2/libs/date_time/test/ testdate_duration_dll.test/gcc-4.0.1/debug>testdate_duration_dll.run for lack of <p../../../bin.v2/libs/date_time/test/ testdate_duration_dll.test/gcc-4.0.1/debug>testdate_duration_dll... ...failed updating 53 targets... ...skipped 173 targets... The use of date_time is not the problem - I get similar errors for other Boost libraries... I'm running on a G5 Mac OSX system 10.4.8 using stock gcc provided with Xcode (gcc 4.0.1) : gcc --version : powerpc-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5363) BTW, simply doing make after configuring works fine... Any ideas? Matthias