It is part of the linker stage so each rebuild should produce an unique UUID. Note, the MacOS X linker actually makes the UUID by checksumming the binary - minus some obvious bits the linker knows to contain timestamps - so if you rebuild the same sources with the same compiler & compiler options, you will get the same UUID. This can cause some confusion, for instance changing just a comment and rebuilding will produce the same UUID... That is an implementation detail, however, and usually doesn't cause problems...
Jim > On Feb 11, 2015, at 4:59 PM, Oleksiy Vyalov <[email protected]> wrote: > > In http://reviews.llvm.org/D7574#122311, @clayborg wrote: > >> looks good. >> >> By the way: on MacOSX we have UUIDs in all of our binaries, so our IDE just >> gives us all of the files that it builds by adding them to our target. They >> first create a target, then they add all built modules using: >> >> lldb::SBModule module = target.AddModule (const char *path, const char >> *triple, const char *uuid_cstr, const char *symfile); >> >> >> >> Then when we run, we discover, via the dynamic loader, that we need some >> binary whose UUID is 1234. Since we were given the local copy of the binary >> already, we can just match it up and not worry about search paths. Any files >> that we weren't given binaries for, we expect them to be in the sys root of >> the platform (where all the /usr/lib binaries are cached, etc). So we expect >> any binaries that were locally built to be supplied to us (which can be done >> in the test suite for example) and all others to be in the SDK and the >> platform plug-in will locate them. > > > Thank you for context. UUID in some way does simplify correct symbols > discovery. > Does it mean that every time you re-build a binary it gets a new UUID > assigned (if it's a part of compilation or linker stage)? > > > http://reviews.llvm.org/D7574 > > EMAIL PREFERENCES > http://reviews.llvm.org/settings/panel/emailpreferences/ > > > > _______________________________________________ > lldb-commits mailing list > [email protected] > http://lists.cs.uiuc.edu/mailman/listinfo/lldb-commits _______________________________________________ lldb-commits mailing list [email protected] http://lists.cs.uiuc.edu/mailman/listinfo/lldb-commits
