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From: "james.hilliard1 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/109253] New: libbpf: failed to find BTF info for
 global/extern symbol '__divdi3'
Date: Thu, 23 Mar 2023 02:27:01 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109253

            Bug ID: 109253
           Summary: libbpf: failed to find BTF info for global/extern
                    symbol '__divdi3'
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: james.hilliard1 at gmail dot com
  Target Milestone: ---

I'm seeing this gen object error which does not occur in llvm for a bpf
test(tcp_ca_write_sk_pacing.c) in bpf-next.


GCC gen object failure:
$ /home/buildroot/bpf-next/tools/testing/selftests/bpf/tools/sbin/bpftool
--debug gen object
/home/buildroot/bpf-next/tools/testing/selftests/bpf/bpf_gcc/tcp_ca_write_s=
k_pacing.bpf.linked1.o
/home/buildroot/bpf-next/tools/testing/selftests/bpf/bpf_gcc/tcp_ca_write_s=
k_pacing.bpf.o
libbpf: linker: adding object file
'/home/buildroot/bpf-next/tools/testing/selftests/bpf/bpf_gcc/tcp_ca_write_=
sk_pacing.bpf.o'...
libbpf: failed to find BTF info for global/extern symbol '__divdi3'
Error: failed to link
'/home/buildroot/bpf-next/tools/testing/selftests/bpf/bpf_gcc/tcp_ca_write_=
sk_pacing.bpf.o':
No such file or directory (2)=