From: Thomas Weißschuh <linux@weissschuh.net>
Date: Thu, 26 Feb 2026 21:23:58 +0000 (+0100)
Subject: tools/build: Reject unexpected values for LLVM=
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7239ae5331ae077c2621740a5db89e65611182cd;p=thirdparty%2Fkernel%2Fstable.git

tools/build: Reject unexpected values for LLVM=

Since commit 502678b88cb3 ("kbuild: Reject unexpected values for LLVM=")
the regular kbuild rejects unexpected values of LLVM=1 instead of
silently treating them as LLVM=1.

Align the tools build to kbuild.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260226-kbuild-llvm-followup-v1-2-201cc2a492d9@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
---

diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index b5ecf137febca..41971a68972dd 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -56,6 +56,8 @@ ifneq ($(filter %/,$(LLVM)),)
 LLVM_PREFIX := $(LLVM)
 else ifneq ($(filter -%,$(LLVM)),)
 LLVM_SUFFIX := $(LLVM)
+else ifneq ($(LLVM),1)
+$(error Invalid value for LLVM, see Documentation/kbuild/llvm.rst)
 endif
 
 $(call allow-override,CC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX))