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bpftool: Define _GNU_SOURCE only once

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_GNU_SOURCE is defined in several source files for bpftool, but only one
of them takes the precaution of checking whether the value is already
defined. Add #ifndef for other occurrences too.

This is in preparation for the support of disassembling JIT-ed programs
with LLVM, with $(llvm-config --cflags) passing -D_GNU_SOURCE as a
compilation argument.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Tested-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20221025150329.97371-2-quentin@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Quentin Monnet
2022-10-25 16:03:22 +01:00
committed by Alexei Starovoitov
parent 8f4bc15b9a
commit b3d84af7cd
7 changed files with 14 additions and 0 deletions
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2
tools/bpf/bpftool/jit_disasm.c
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@@ -11,7 +11,9 @@
* Licensed under the GNU General Public License, version 2.0 (GPLv2)
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <stdarg.h>
#include <stdint.h>