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From: Natanael Copa <ncopa@alpinelinux.org>
To: bpf@vger.kernel.org
Cc: Natanael Copa <ncopa@alpinelinux.org>,
	stable@vger.kernel.org,
	Viktor Malik <vmalik@redhat.com>,
	Daniel Xu <dxu@dxuuu.xyz>,
	Alexei Starovoitov <ast@kernel.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Andrii Nakryiko <andrii@kernel.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH] tools/resolve_btfids: fix build with musl libc
Date: Thu, 28 Mar 2024 11:59:13 +0100
Message-ID: <20240328110103.28734-1-ncopa@alpinelinux.org>
Precedence: bulk
MIME-Version: 1.0
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Include the header that defines u32.

Fixes: 9707ac4fe2f5 ("tools/resolve_btfids: Refactor set sorting with types from btf_ids.h")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218647
Cc: stable@vger.kernel.org
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
---
This fixes build of 6.6.23 and 6.1.83 kernels for Alpine Linux, which
uses musl libc. I assume that GNU libc indirecly pulls in linux/types.h.

 tools/include/linux/btf_ids.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/include/linux/btf_ids.h b/tools/include/linux/btf_ids.h
index 72535f00572f..72ea363d434d 100644
--- a/tools/include/linux/btf_ids.h
+++ b/tools/include/linux/btf_ids.h
@@ -3,6 +3,8 @@
 #ifndef _LINUX_BTF_IDS_H
 #define _LINUX_BTF_IDS_H
 
+#include <linux/types.h> /* for u32 */
+
 struct btf_id_set {
 	u32 cnt;
 	u32 ids[];
-- 
2.44.0