[boost] linking on OSX

Subject: [boost] linking on OSX
From: David M. Cotter (me_at_[hidden])
Date: 2009-10-09 17:35:18

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