The boost/build/v1 common-names rule computes a toolset name of "bcb56" when using borland-5.6.4-tools. The boost/config/auto_link.hpp file does not discriminate between bcb5.5 and bcb5.6, using "bcb". Auto link therefore fails. I have made the following local fix to auto_link.hpp, since to me the common-names toolset name computation seems to be self-consist across toolsets. Whould it be possible to fix either auto_link.hpp or the boost build v1 common-names rule - whichever makes more sense. Thanks Hugo Index: auto_link.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/config/auto_link.hpp,v retrieving revision 1.9 diff -u -r1.9 auto_link.hpp --- auto_link.hpp 21 Jan 2004 11:54:55 -0000 1.9 +++ auto_link.hpp 22 Mar 2004 14:09:39 -0000 @@ -120,9 +120,14 @@ // vc71: # define BOOST_LIB_TOOLSET "vc71" -#elif defined(__BORLANDC__) +#elif defined(__BORLANDC__) && (__BORLANDC__ >= 0x560) // CBuilder 6: +# define BOOST_LIB_TOOLSET "bcb56" + +#elif defined(__BORLANDC__) + + // BCB: # define BOOST_LIB_TOOLSET "bcb" #elif defined(__ICL)