Hi, I have a darwinbuild derived project that crashes at the first usage of the C++ standard lib on 10.6.x if not compiled with darwinbuild. (on 10.5 it works fine). It's pretty stomping as the build options for the Xcode and darwinbuild compiles are identical. I pimped the darwinbuild Tokend project to include my tokend. I have three associated questions, the most important one is how to extend the build dependencies: Q1: I extended the 10A432.plist with the additional dependency, but it does not seem the get read with a simple "darwinbuild Tokend". I need additionally CoreServices.framework. How can I force re-reading of the 10A432.plist? darwinxref? Q2: the header <dlfcn.h> is missing in the darwinbuild environment. However, the project is dependent from the "dyld" root, which contains the header. Bug or oversight on my part? I tried to force addition of the headers with "darwinbuild -header dyld" and "darwinbuild -header libdyld" but both fail. Q3: How can I build a certain target of an project? "darwinbuild -target=PIV Tokend" did not work. TIA, Thomas