http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46749
--- Comment #29 from Mike Stump <mikestump at comcast dot net> 2010-12-03 23:13:02 UTC --- > The darwin people have to design a more robust way to run dsymutil. Ok. How's this, you must run LINK_COMMAND_SPEC to link. When you run it, any temporary real .o files created by the compilation process cannot be removed until after it finishes running, including any sub-invocations of the compiler that contribute content.