tools/resolve_btfids: fix build with musl libc

Include the header that defines u32.
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.

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>
Tested-by: Greg Thelen <gthelen@google.com>
Link: https://lore.kernel.org/r/20240328110103.28734-1-ncopa@alpinelinux.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/include/linux/btf_ids.h b/tools/include/linux/btf_ids.h
index 72535f00572f6eca7f1d0df4511cf1dfd239b84b..72ea363d434db09c06c6acc9ed1855dec7188504 100644 (file)
--- 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[];