[Buildroot] [PATCHv5 4/5] package/bpftrace: new package
qais.yousef at arm.com
Mon Dec 21 11:44:04 UTC 2020
On 12/20/20 11:01, Romain Naour wrote:
> Le 20/12/2020 à 02:47, Qais Yousef a écrit :
> > On 12/06/20 18:35, Romain Naour wrote:
> >> From: Qais Yousef <qais.yousef at arm.com>
> >> bpftrace is a high-level tracing language for Linux enhanced Berkeley
> >> Packet Filter (eBPF) available in recent Linux kernels (4.x).
> >> Only tested on x86_64 and aarch64. The package doesn't support i386 and
> >> aarch32.
> >> Signed-off-by: Qais Yousef <qais.yousef at arm.com>
> >> Signed-off-by: Romain Naour <romain.naour at gmail.com>
> >> Cc: Jugurtha BELKALEM <jugurtha.belkalem at smile.fr>
> >> ---
> >> v2: patch to build bundled libraries statically
> >> Add glibc dependency
> >> Rework to select bcc, libbpf and llvm RTII dependencies.
> >> Add reverse dependencies
> >> Add BR2_PACKAGE_BPFTRACE_ARCH_SUPPORTS
> >> Bump the version to the latest (upcoming 0.12)
> >> due to many build issues (and patch to backport) with
> >> the latest release.
> >> Add binutils optional dependency to provide libbfd and libopcodes.
> >> Disable manpages.
> >> ---
> > I don't think we need the dependency on libbpf? BCC provides it and we depend
> > on it.
> The libbpf provided by BCC is named libbcc_bpf.so but bpftrace really expect
> I added libbpf package since distribution packages use it.
> But bpftrace try to find bcc_bpf only for static linking.
> It's not clear what's the libbpf implementation the buildsystem is trying to
> use. Why it is not using the same bpf library for both static ans shared linking ?
I don't know to be honest. I saw that bpftrace uses bcc/libbpf.h in all places,
except for btf handling which is guarded by HAVE_LIBBPF_BTF_DUMP.
The INSTALL.md doesn't mention libbpf as dependency too..
I think you have better experience than myself in this packaging related
problems. We could ask the bpftrace developers directly too to clarify the
> I think it's better use use the library from upstream (libbpf) rather than a
> library bundled in another software (bcc_libbpf).
I don't see this dependency will break anything. So I will trust your judgement
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