[v3,0/3] bpftool: Fix the static linkage failure

Message

Leo Yan Dec. 15, 2024, 10:12 p.m. UTC

This series follows up on the discussion in [1] for fixing the static
linkage issue in bpftool.

Patch 01 introduces a new feature for libelf-zstd.  If this feature
is detected, it means the zstd lib is required by libelf.

Patch 02 is a minor improvement for linking the zstd lib in the perf.

Patch 03 fixes the static build failure by linking the zstd lib when
the feature-libelf-zstd is detected.

[1] https://lore.kernel.org/linux-perf-users/Z1H9-9xrWM4FBbNI@mini-arch/T/#m2300b127424e9e2ace7da497a20d88534eb6866f

Changes from v2:
- Refined commit log in patch 01 for recording info that from which
  libelf version it requires to link libzstd. (Quentin)
- Removed to display feature 'libelf-zstd' in bpftool. (Quentin)
- Added Test and Ack tags. Thanks all! (Quentin/Jiri/Namhyung/Andrii)


Leo Yan (3):
  tools build: Add feature test for libelf with ZSTD
  perf: build: Minor improvement for linking libzstd
  bpftool: Link zstd lib required by libelf

 tools/bpf/bpftool/Makefile             | 7 +++++++
 tools/build/Makefile.feature           | 1 +
 tools/build/feature/Makefile           | 4 ++++
 tools/build/feature/test-all.c         | 4 ++++
 tools/build/feature/test-libelf-zstd.c | 9 +++++++++
 tools/perf/Makefile.config             | 8 +++++++-
 6 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 tools/build/feature/test-libelf-zstd.c