Hi, I'm trying to build boost 1.40 on Mac OS X 10.6 Snow Leopard (with Xcode 3.2 is installed). This is the command I used to use on Mac OS X 10.5 Leopard and Xcode 3.1.x: bjam --prefix=/somepath --layout=versioned toolset=darwin architecture=combined address-model=32_64 link=static install This used to give me great universal binaries (ppc/intel, 32-/64-bit). But since installing Snow Leopard and Xcode 3.2 it does not build anymore. No binaries are created and I get strange compiler errors like this: /usr/include/time.h:77: error: expected constructor, destructor, or type conversion before ‘typedef’ /usr/include/time.h:124: error: ‘clock_t’ does not name a type In file included from /usr/include/c++/4.2.1/cwchar:52, from /usr/include/c++/4.2.1/bits/postypes.h:46, from /usr/include/c++/4.2.1/iosfwd:49, from /usr/include/c++/4.2.1/bits/stl_algobase.h:70, from /usr/include/c++/4.2.1/bits/char_traits.h:46, from /usr/include/c++/4.2.1/string:47, from ./boost/program_options/errors.hpp:12, from ./boost/program_options/options_description.hpp: 12, from libs/program_options/src/ options_description.cpp:10: I _assume_ the problem is gcc 4.2 that was probably installed by Xcode 3.2. I am also not sure if gcc 4.2 even supports PCC code generation. So is there a way to switch to gcc 4.0? Or any other solution for the problem? I tried toolset=gcc-4.0 instead of darwin. This resulted in some binaries, but they are not universal anymore, as far as I can see. Any ideas/hints how to successfully build boost on Snow Leopard? Thank you very much, Mani -- http://mani.de - friendly software iVolume - listen to music freehand LittleSecrets - the encrypted notepad Sahara - sand in your pocket Watchdog - baffle the curious