> On Thu, Apr 27, 2023 at 4:36 PM Daniel Rosenberg <drosen@xxxxxxxxxx> wrote: >> >> On Wed, Apr 26, 2023 at 4:39 PM Andrii Nakryiko >> <andrii.nakryiko@xxxxxxxxx> wrote: >> > >> > 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. >> >> I've tried the same, modulo some paths. I'm pretty sure it's version >> related at this point. >> The current issue I'm seeing is "error: indirect call in function, >> which are not supported by eBPF" when using GCC-BPF for >> progs/bind4_prog.c > > I don't think GCC-BPF is able to compile selftests properly just yet. > So I guess the problem is that you do have some version of gcc-bpf in > the system and selftest's Makefile tries to build gcc variants of > test_progs? That's bad (I don't have GCC-BPF locally, and everyone > else apparently as well). > > So for now just `make BPF_GCC=` ? CC'ing Jose, we should probably > agree on some criteria of "GCC-BPF is really capable of building > selftests" and adjust Makefile to only attempt GCC BPF build in that > case. Being able to run the selftests is our goal at the moment, but we are not there yet, no. What about making the kernel build system to emit a visible warning before it builds the GCC variants of the tests programs? Something like "this is experimental and will likely fail". >> >> Currently using clang 16.0.0 and gcc 12.2.0-14. >> I did manage to get it to build by just commenting out TEST_GEN_PROGS >> += test_progs-bpf_gcc
