From: Suleiman Souhlal <suleiman@google.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>,
Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@fomichev.me>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>,
Masahiro Yamada <masahiroy@kernel.org>,
Ian Rogers <irogers@google.com>,
ssouhlal@freebsd.org, bpf@vger.kernel.org,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
Suleiman Souhlal <suleiman@google.com>,
stable@vger.kernel.org
Subject: [PATCH] tools/resolve_btfids: Fix build when cross compiling kernel with clang.
Date: Fri, 6 Jun 2025 14:23:01 +0900 [thread overview]
Message-ID: <20250606052301.810338-1-suleiman@google.com> (raw)
When cross compiling the kernel with clang, we need to override
CLANG_CROSS_FLAGS when preparing the step libraries for
resolve_btfids.
Prior to commit d1d096312176 ("tools: fix annoying "mkdir -p ..." logs
when building tools in parallel"), MAKEFLAGS would have been set to a
value that wouldn't set a value for CLANG_CROSS_FLAGS, hiding the
fact that we weren't properly overriding it.
Cc: stable@vger.kernel.org
Fixes: 56a2df7615fa ("tools/resolve_btfids: Compile resolve_btfids as host program")
Signed-of-by: Suleiman Souhlal <suleiman@google.com>
---
tools/bpf/resolve_btfids/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
index afbddea3a39c..ce1b556dfa90 100644
--- a/tools/bpf/resolve_btfids/Makefile
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -17,7 +17,7 @@ endif
# Overrides for the prepare step libraries.
HOST_OVERRIDES := AR="$(HOSTAR)" CC="$(HOSTCC)" LD="$(HOSTLD)" ARCH="$(HOSTARCH)" \
- CROSS_COMPILE="" EXTRA_CFLAGS="$(HOSTCFLAGS)"
+ CROSS_COMPILE="" CLANG_CROSS_FLAGS="" EXTRA_CFLAGS="$(HOSTCFLAGS)"
RM ?= rm
HOSTCC ?= gcc
--
2.50.0.rc0.642.g800a2b2222-goog
next reply other threads:[~2025-06-06 5:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-06 5:23 Suleiman Souhlal [this message]
2025-06-06 5:36 ` [RESEND][PATCH] tools/resolve_btfids: Fix build when cross compiling kernel with clang Suleiman Souhlal
2025-06-06 6:05 ` Greg KH
2025-06-06 6:08 ` Suleiman Souhlal
2025-06-06 6:20 ` Greg KH
2025-06-06 6:21 ` Suleiman Souhlal
2025-06-06 7:36 ` Greg KH
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