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libbpf: Provide GELF_ST_VISIBILITY() define for older libelf 

Where that macro isn't available.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/YJaspEh0qZr4LYOc@kernel.org
This commit is contained in:
Arnaldo Carvalho de Melo 2021-05-08 12:22:12 -03:00 committed by Daniel Borkmann
parent e2d5b2bb76
commit 67e7ec0bd4
1 changed files with 5 additions and 0 deletions
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5
tools/lib/bpf/libbpf_internal.h
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@ -41,6 +41,11 @@
#define ELF_C_READ_MMAP ELF_C_READ
#endif
/* Older libelf all end up in this expression, for both 32 and 64 bit */
#ifndef GELF_ST_VISIBILITY
#define GELF_ST_VISIBILITY(o) ((o) & 0x03)
#endif
#define BTF_INFO_ENC(kind, kind_flag, vlen) \
((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN))
#define BTF_TYPE_ENC(name, info, size_or_type) (name), (info), (size_or_type)