On Wed, Apr 26, 2023 at 3:07 PM Daniel Rosenberg <drosen@xxxxxxxxxx> wrote: > > > > > It is expected that you build the freshest vmlinux image before > > building selftests, because we generate vmlinux.h from it. In your > > case we generated vmlinux.h from your system-wide > > /sys/kernel/btf/vmlinux BTF information, which doesn't yet have latest > > UAPI enums. > > > I'm still unable to build the selftests. I've got it pointed to a > locally built kernel built using the config/config.x86_64, and have > tried running the vmtest.sh script, and building just the tests via > make. I'm using O= to direct it to the out directory for the kernel > build. I've been hitting various errors when trying this. Confusingly > the error message isn't always the same. Currently from a clean build, > it complains about "linux/atomic.h" not found via #include > "../../../include/linux/filter.h"'s in various files. Other times it's > complained about the various helper functions from bpf_helper_defs.h > being unused. > > I'm not sure if I'm invoking the command wrong, or missing > dependencies or something. I got past some earlier issues by updating > clang. Any idea what I'm doing wrong? Don't know, show the sequence of commands you are running? I have linux source in ~/linux, and KBUILD_OUTPUT set to ~/linux-build/default. And it only takes this: $ cd ~/linux $ make -j90 # build kernel $ cd tools/testing/selftests/bpf $ make -j90 # build selftests And that's it.
