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Bug#1010849: DWARF support disabled during build / no symbolic stack traces or argument types

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Package: bpftrace
Version: 0.14.1-3
Severity: normal

It seems the Debian bpftrace is built without libdw support.  This means no stack
traces can be provided with uprobes, and one cannot dereference structs or other
type information from the DWARF information.

# bpftrace -lv 'uprobe:/usr/local/lib/libosmocore.so.18.0.0:osmo_timer_schedule'
WARNING: Cannot parse DWARF: libdw not available

# bpftrace --info
System
  OS: Linux 5.16.0-5-amd64 #1 SMP PREEMPT Debian 5.16.14-1 (2022-03-15)
  Arch: x86_64

Build
  version: v0.14.1
  LLVM: 13.0.1
  ORC: v2
  foreach_sym: yes
  unsafe uprobe: no
  bfd: no
  bpf_attach_kfunc: yes
  bcc_usdt_addsem: yes
  bcc bpf_attach_uprobe refcount: yes
  bcc library path resolution: yes
  libbpf: yes
  libbpf btf dump: yes
  libbpf btf dump type decl: yes
  libdw (DWARF support): no
  ^^^^^^^^^^^^^^^^^^^^^^^^^

I'm wondering what is the rationale of not including DWARF support?  Is this
intentional? It renders large portions of uprobe use cases useless.

-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.16.0-5-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_DIE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages bpftrace depends on:
ii  libbpf0       1:0.7.0-2
ii  libbpfcc      0.24.0+ds-1
ii  libc6         2.33-7
ii  libclang1-13  1:13.0.1-3+b2
ii  libgcc-s1     12.1.0-1
ii  libllvm13     1:13.0.1-3+b2
ii  libstdc++6    12.1.0-1

bpftrace recommends no packages.

bpftrace suggests no packages.

-- no debconf information

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Bug#1010849: DWARF support disabled during build / no symbolic stack traces or argument types Harald Welte <laforge@gnumonks.org> - 2022-05-11 16:20 +0200
  Bug#1010849: DWARF support disabled during build / no symbolic stack traces or argument types Vincent Bernat <bernat@debian.org> - 2022-05-11 20:30 +0200

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