linux-kernel - [PATCH v2 3/6] kbuild: rust: move `-Dwarnings` handling to `Makefile.extrawarn`

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Message-Id: <20250814-kbuild-werror-v2-3-c01e596309d2@linutronix.de>
Date: Thu, 14 Aug 2025 12:14:43 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Nathan Chancellor <nathan@...nel.org>, 
 Nicolas Schier <nicolas.schier@...ux.dev>, Miguel Ojeda <ojeda@...nel.org>, 
 Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, 
 Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
 Danilo Krummrich <dakr@...nel.org>
Cc: linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, 
 rust-for-linux@...r.kernel.org, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH v2 3/6] kbuild: rust: move `-Dwarnings` handling to
 `Makefile.extrawarn`

From: Miguel Ojeda <ojeda@...nel.org>

Following commit e88ca24319e4 ("kbuild: consolidate warning flags
in scripts/Makefile.extrawarn"), move `-Dwarnings` handling into
`Makefile.extrawarn` like C's `-Werror`.

No functional change intended.

Signed-off-by: Miguel Ojeda <ojeda@...nel.org>
---
 Makefile                   | 3 ---
 scripts/Makefile.extrawarn | 1 +
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 6bfe776bf3c5ff0cf187dc6719dd5817cd4af2ca..6630a66659c6d1ca7e72448b04d16c3fdd1fbe24 100644
--- a/Makefile
+++ b/Makefile
@@ -901,9 +901,6 @@ stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG)      := -fstack-protector-strong
 
 KBUILD_CFLAGS += $(stackp-flags-y)
 
-KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarnings
-KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y)
-
 ifdef CONFIG_FRAME_POINTER
 KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 1ffc7beca43bc9e373064194dc8975182815a872..b04b3062e0e49c3ae7471973251017e8738cd244 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -217,5 +217,6 @@ endif
 ifneq ($(findstring e, $(KBUILD_EXTRA_WARN))$(CONFIG_WERROR),)
 
 KBUILD_CPPFLAGS		+= -Werror
+KBUILD_RUSTFLAGS	+= -Dwarnings
 
 endif

-- 
2.50.1