Messages in this thread | | | From | Alexei Starovoitov <> | Date | Wed, 19 Feb 2020 08:41:27 -0800 | Subject | Re: Kernel 5.5.4 build fail for BPF-selftests with latest LLVM |
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On Wed, Feb 19, 2020 at 4:30 AM Jesper Dangaard Brouer <brouer@redhat.com> wrote: > > I'm willing to help out, such that we can do either version or feature > detection, to either skip compiling specific test programs or at least > give users a proper warning of they are using a too "old" LLVM version. ... > progs/test_core_reloc_bitfields_probed.c:47:13: error: use of unknown builtin '__builtin_preserve_field_info' [-Wimplicit-function-declaration] > out->ub1 = BPF_CORE_READ_BITFIELD_PROBED(in, ub1);
imo this is proper warning message already.
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