Hi, I build the Boost libraries and installed them, and when I did I specified --prefix, --exec-prefix/,/ and / /--builddir so that all of my build products would be placed in a separate directory tree. I have been looking at the thread library. I could run the test as described, using bjam -sTOOLS=darwin test in the proper directory. It built and ran with no problems. (This is under Mac OS 10.3.8) Flushed with success, I built the thread example programs using this command: bjam -sTOOLS=darwin This did build the programs, placing them under $BOOST_ROOT/bin/boost/libs/thread/example/. For instance, the "condition" program is located in: $BOOST_ROOT/bin/boost/libs/thread/example/condition/darwin/debug/ All okay. Here is my problem. When I try to run these programs, they all fail. A representative error is: dyld: ./condition/darwin/debug/condition can't open library: ../../../bin/boost/libs/thread/build/libboost_thread.dylib/darwin/debug/shared-linkable-true/libboost_thread-d-1_32.dylib (No such file or directory, errno = 2) It appears to me that the link knows the relative path to the default library build location, and specified that as the path to the dynamic library. The problem is that I didn't build my libraries there. I tried setting BOOST_ROOT to the equivalent top level location in my build products tree, but that didn't change anything. I tried to force a static link (hoping to force a different link error that might give me another hint), but that blew up bjam in a different way that I don't want to get into here. (Should I be able to statically link these programs?) Is there some way to change the library path used for linking these programs? Thanks, Rush