-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Loading Jamfile at '/usr/home/oxyd/development/boost/boost_1_45_0' Assigned project target object(project-target)@557 to 'Jamfile' Loading Jamfile at '.' Initializing project 'Jamfile' Assigned project target object(project-target)@597 to 'Jamfile' Class top-level-target already defined zsh: abort bjam --debug-loading toolset=gcc stage Is there a second copy of boost in /usr/home/oxyd/BACKUP/development/boost/boost_1_45_0? That would be your problem, bjam is detecting the backup and the is confused, because there's a second Boost that's trying to become the top level target. I think. - -- Bryce Lelbach aka wash boost-spirit.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkznBOMACgkQO/fqqIuE2t7OFwCg2z1NoIDOLrp9PJs0KXZTlVyd 8X8AoK5iJZcYhKX21T2ahL981Dwlmfal =vyOw -----END PGP SIGNATURE-----