I'm trying to build boost (boost_1_31_0) as a dependency for monotone http://venge.net/monotone/ on Mac OS X 10.4 (tiger). I'm doing this using gcc-3.3 because monotone doesn't work properly with gcc 4. Following the instructions in monotone for how to build boost, it tells me to do this: $BJAM "-sBUILD=release <threading>single <optimization>speed <runtime- link>static" This failed on a few of the targets, with an error that crt0.o was not found. This is probably because static linking of binaries is not supported on Mac OS X: http://developer.apple.com/qa/qa2001/qa1118.html So I tried removing the <runtime-link>static option, but then I started getting errors about not being able to find certain symbols. For some projects, it was complaining about not being able to find _main. It also complained about not being able to find __Z20init_unit_test_suiteiPPc in libboost_unit_test_framework, and there may have been other errors too. Here's the error output for some of these: gcc-Link-action bin/boost/libs/thread/build/libboost_thread.dylib/gcc/ release/shared-linkable-true/libboost_thread-gcc-1_31.dylib c++: unrecognized option `-shared' ld: Undefined symbols: _main gcc-Link-action bin/boost/libs/test/build/ libboost_unit_test_framework.dylib/gcc/release/shared-linkable-true/ libboost_unit_test_framework-gcc-1_31.dylib c++: unrecognized option `-shared' ld: Undefined symbols: __Z20init_unit_test_suiteiPPc So, I'm wondering what I need to do to get boost to build on darwin. Can anyone give me some help? Thanks, Brian