I was trying to test my code on gcc and since do not have access to linux, I used cygwin gcc v 4.3.2 with boost 1.38. I first built bjam (it went Ok). copied it to /bin then created symlink g++ to gcc-4 (cygwin has gcc 4.3.2 as gcc-4) and then with this command bjam toolset=gcc variant=debug release link=shared threading=multi runtime-link=shared stage started the build thread library built (although I am not sure if pthreads are supported on cygwin, may be it was just a dummy library). Many link errors. So wanted to ask if anybody has tried - or if you guys would recommend to try the same with gcc-3.4 thank you in advance -- V S P toreason@fastmail.fm -- http://www.fastmail.fm - One of many happy users: http://www.fastmail.fm/docs/quotes.html