Re: [Boost-users] undefined reference to `__sync_fetch_and_add_4'

Vladimir Prus:

Peter Dimov wrote:

...

...

This could be caused by an issue we've identified recently of libstdc++ standard headers using __sync_fetch_and_add as part of their reference counted implementation of std::string and std::locale.

Or probably by the fact that -m32 was not, in fact, passed to compiler when building boost.

The original post stated:

I built boost 1.38 as so:

bjam architecture=x86 address-model=32 --stagedir=stage32 --with-filesystem --with-thread --with-signals --with-serialization --with-system --with-program_options --with-date_time stage

so I assumed that address-model=32 does pass -m32 to g++.