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authorQuentin Monnet <quentin@isovalent.com>2022-10-25 16:03:22 +0100
committerAlexei Starovoitov <ast@kernel.org>2022-10-25 10:11:56 -0700
commitb3d84af7cdfc079ef86d94f7cf125821559925fa (patch)
treeccf59a53c1caa6f861363f00caa9c06eb88a1f2f /tools/bpf/bpftool/prog.c
parent8f4bc15b9ad73434643aadb19506e1547bedf7eb (diff)
bpftool: Define _GNU_SOURCE only once
_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>
Diffstat (limited to 'tools/bpf/bpftool/prog.c')
-rw-r--r--tools/bpf/bpftool/prog.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 10ec29cb4598..dbf5489b8fde 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -1,7 +1,9 @@
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
+#ifndef _GNU_SOURCE
#define _GNU_SOURCE
+#endif
#include <errno.h>
#include <fcntl.h>
#include <signal.h>