Aha. I was using "bjam -sTOOLS=gcc", when I *should* have used bjam -sTOOLS=darwin reed I wrote:

Hello. I'm new to Boost, and am trying to build the boost_thread library on Darwin (Mac OSX 10.2.4). I have tried 1.30.0 and the CVS version, but get a bunch of linker errors (copied below), as well as a warning about Python (which I assume is safe to ignore if I don't want Python stuff).

What is the correct way to build boost on Darwin/OSX?

I have tried the following: bjam boost_thread bjam -sTOOLS=gcc boost_thread bjam -sBUILD="framework bundle-loader" boost_thread bjam bjam -sTOOLS=gcc ... And I tried hacking tools/build/gcc-tools.jam to add "-lstdc++" to the linker command line.

All have the same problem.

here is my GCC version: $ gcc --version 2.95.2

(3.2, which is also available for OSX, and I think might be the defauld, has bugs [so does 2.95 though...], so I can't use it for my own c++ code)

Here is the bjam output (I used "bjam -q boost_thread" on the CVS checkout):

[...Python warning...]

...found 322 targets... ...updating 6 targets... gcc-Link-action libs/thread/build/bin/libboost_thread.dylib/gcc/debug/runtime-link- dynamic/shared-linkable-true/libboost_thread.dylib /usr/bin/ld: Undefined symbols: _main __._9exception ___builtin_delete ___cp_push_exception ___eh_alloc ...