i've compiled my boost library. i want to use threads in my stand- alone application i want this to work even on machines that don't have boost installed, obviously. so i have a couple custom build steps in my XCode proj: I have a "Copy Files" step which copies "libboost_thread.dylib" into the "SharedSupport" folder of my application bundle then the normal "link with binaries" step, which links with the thread.dylib which is in the normal "install" location (/usr/local/lib/) then i have a "custom shell script" step (after the linking step) which does this: install_name_tool -change libboost_thread.dylib @loader_path/../ SharedSupport/libboost_thread.dylib "${BUILT_PRODUCTS_DIR}/$ {EXECUTABLE_PATH}"; what this does is cause the executable to link with the libboost_thread.dylib that is in the SharedSupport folder in the app bundle, or so i thought. because when i run, it fails to launch because it can't find the dylib, i get this in the console: 10/9/09 2:19:35 PM [0x0-0x41d41d].com.foo.foo[88777] dyld: Library not loaded: @loader_path/../SharedSupport/libboost_thread.dylib 10/9/09 2:19:35 PM [0x0-0x41d41d].com.foo.foo[88777] Referenced from: /Users/davec/Desktop/Foo.app/Contents/MacOS/Foo 10/9/09 2:19:35 PM [0x0-0x41d41d].com.foo.foo[88777] Reason: no suitable image found. Did find: 10/9/09 2:19:35 PM [0x0-0x41d41d].com.foo.foo[88777] /Users/davec/ Desktop/Foo.app/Contents/MacOS/../SharedSupport/libboost_thread.dylib: unknown required load command 0x80000022