Hi, I built boost under Solaris with the Sun C++ compiler 12. To summarize the experience: informations are very much scattered around in the boost documentation/web pages and you have to learn bjam Finally I did it like this: $ ./configure --prefix=/my/prefix \ --with-libraries=test,program_options --with-toolset=sun $ cat > user-config.jam using sun : 5.9 : CC : <cxxflags>"-library=stlport4 -features=tmplife -features=tmplrefstatic -O" <linkflags>-library=stlport4 ; ^D $ ./tools/jam/src/bin.solaris/bjam -sICU_PATH=/usr \ --user-config=user-config.jam --with-test --with-program_options \ address-model=64 -d3 $ ./tools/jam/src/bin.solaris/bjam -sICU_PATH=/usr \ --user-config=user-config.jam --with-test --with-program_options \ address-model=64 \ -d3 --prefix=/my/prefix install My software works so far with this compiled version of boost under Solaris 10. Well, is this the right/best/official/boost/bjam-way to build boost on Solaris 10? The default sun toolset-settings does not seem to include even '-library=stlport4' option, although the Sun CC is infamous for its nonconforming STL implementation which is selected by default. Is it possible to improve the sun bjam toolset in such a way, that it selects -features=tmplife by default, if it detects that CC is of version 5.9? And is it possible to select the addresss-model=64 property via the ./configure command line? Is there is a './configure --help' aequivalent for bjam to display the options of the current toolset without reading the bjam toolset source? Best regards Georg Sauthoff