linux-kernel - [PATCH] scripts/gen-btf.sh: fix shebang for NixOS

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Message-ID: <20260120182034.3647092-1-gary@kernel.org>
Date: Tue, 20 Jan 2026 18:20:33 +0000
From: Gary Guo <gary@...nel.org>
To: Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Eduard Zingerman <eddyz87@...il.com>,
	Song Liu <song@...nel.org>,
	Yonghong Song <yonghong.song@...ux.dev>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Hao Luo <haoluo@...gle.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Ihor Solodrai <ihor.solodrai@...ux.dev>
Cc: Gary Guo <gary@...yguo.net>,
	bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] scripts/gen-btf.sh: fix shebang for NixOS

From: Gary Guo <gary@...yguo.net>

NixOS only puts /usr/bin/env and /bin/sh at the standard location as
required by POSIX, but not other shells. Other program that kernel build
depends on is supplied via PATH, so shebang needs to use /usr/bin/env to
find them.

This has been done to a few other scripts already, e.g.
gen_test_kallsyms.sh or decode_stacktrace.sh.

Fixes: 522397d05e7d ("resolve_btfids: Change in-place update with raw binary output")
Signed-off-by: Gary Guo <gary@...yguo.net>
---
 scripts/gen-btf.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/gen-btf.sh b/scripts/gen-btf.sh
index be21ccee3487..4cd3159f2ddb 100755
--- a/scripts/gen-btf.sh
+++ b/scripts/gen-btf.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (c) 2025 Meta Platforms, Inc. and affiliates.
 #

base-commit: 053966c344dbd346e71305f530e91ea77916189f
-- 
2.51.2