Hey boosters, We have found some problems with the following files: boost_1_31_0/libs/regex/src/cpp_regex_traits.cpp boost_1_31_0/libs/test/src/test_tools.cpp They use definitions from <ios> but never actually include it - they are relying on the fact that in some STLs the headers are pulled in by other header files. Unfortunately, under our STL (RW STL 6.0) this is not the case and hence the files fail to compile. Add the following include line to both to fix the problem: #include <ios> There is another STL related problem in boost_1_31_0/boost/regex/config/cwchar.hpp which manipulates some macros such as iswalnum etc. These are originally pulled in from <wctype.h> and <wchar.h> under /usr/include. With gcc, <cwctype> and <cwchar> undefine these macros as the first thing, however, our STL's headers don't. That leads to compilation errors from the above header. To fix this, add #undef iswalnum #undef iswalpha #undef iswblank #undef iswcntrl #undef iswdigit #undef iswgraph #undef iswlower #undef iswprint #undef iswprint #undef iswpunct #undef iswspace #undef iswupper #undef iswxdigit #undef iswctype #undef towlower #undef towupper #undef towctrans #undef wctrans #undef wctype when RW STL 6.0 is being used. The final problem is more of a feature request: In our environment, we build all shared objects with all external references unresolved, so that a .so A never depends on a shared library B. The symbols get only resolved once the final executable is linked. This causes us problems with boost when building the regression tests, as the final Jam link rule adds all additional libraries *before* the final libboost_*. That way, we end up with unresolved symbols to e.g. our STL. Is there any way in which this requirement could be incorporated into Boost.Build? I guess a simple solution would be to have another variable called e.g. ADDITIONAL_LIBS_LAST which would be passed as the last thing on linker line in the link rule. HW & SW details: OS: Red Hat Enterprise Linux 2.1 & 3.0 HW: various Compiler: gcc 3.2.3-20 STL: RogueWave 6.0 Boost: 1.31.0 Thanks, Tom _________________________________________________________________ It's fast, it's easy and it's free. Get MSN Messenger today! http://www.msn.co.uk/messenger