On Thu, 22 Jun 2017 23:34:01 +0930 Alan Modra <amodra@xxxxxxxxx> wrote: > On Thu, Jun 22, 2017 at 02:33:27PM +1000, Nicholas Piggin wrote: > > On Thu, 22 Jun 2017 11:48:38 +0800 > > kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > > > >> ia64-linux-ld: warning: .note.gnu.build-id section discarded, --build-id ignored. > > > > > > Sigh. > > > > What's happening here is that when performing the final link with the > > -R option, the linker forgets to emit the --build-id section it was > > asked to. > > > > This is the final link command line that causes the error: > > > > $ ia64-linux-ld -static -R arch/ia64/kernel/gate-syms.o --build-id -o vmlinux -T ./arch/ia64/kernel/vmlinux.lds --whole-archive built-in.o --no-whole-archive --start-group lib/lib.a arch/ia64/lib/lib.a --end-group > > Try putting the --just-symbols (-R) file after --no-whole-archive. > The idea being to make it not the first object file. --just-symbols > files have their contents discarded, and the linker is stupidly > attaching the section it creates to hold the build-id, to that file. > That makes sense. It's a bit tricky to do this with the way options are provided by the arch code to the final link, but I worked around it by linking a small dummy .o file with the symbols and pulling that into the final link. Thanks, Nick -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
