[PATCH v3 bpf-next 0/3] Fixes for bpftool-prog-profile

[Song Liu <songliubraving@xxxxxx>]

1. Fix build for older clang;
2. Fix skeleton's dependency on libbpf;
3. Add files to .gitignore.

Changes v2 => v3:
1. Add -I$(LIBBPF_PATH) to Makefile (Quentin);
2. Use p_err() for error message (Quentin).

Changes v1 => v2:
1. Rewrite patch 1 with real feature detection (Quentin, Alexei).
2. Add files to .gitignore (Andrii).

Song Liu (3):
  bpftool: only build bpftool-prog-profile if supported by clang
  bpftool: skeleton should depend on libbpf
  bpftool: add _bpftool and profiler.skel.h to .gitignore

 tools/bpf/bpftool/.gitignore                  |  2 ++
 tools/bpf/bpftool/Makefile                    | 20 +++++++++++++------
 tools/bpf/bpftool/prog.c                      |  1 +
 tools/build/feature/Makefile                  |  9 ++++++++-
 .../build/feature/test-clang-bpf-global-var.c |  4 ++++
 5 files changed, 29 insertions(+), 7 deletions(-)
 create mode 100644 tools/build/feature/test-clang-bpf-global-var.c

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2.17.1