linux-kernel - [PATCH 3/3] kbuild: rust: support `W=e` for Rust

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Date: Sun, 19 May 2024 23:12:35 +0200
From: Miguel Ojeda <ojeda@...nel.org>
To: Masahiro Yamada <masahiroy@...nel.org>,
	Miguel Ojeda <ojeda@...nel.org>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Alex Gaynor <alex.gaynor@...il.com>
Cc: Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...sung.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	linux-kbuild@...r.kernel.org,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	patches@...ts.linux.dev
Subject: [PATCH 3/3] kbuild: rust: support `W=e` for Rust

With `W=e`, kernel C targets error out on warnings.

Add support for the same feature for Rust code, but take the opportunity
to apply it for every Rust target (i.e. not just kernel code), so that
it behaves like having set `CONFIG_WERROR`.

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

diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 990890821889..214b5edce4f2 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -206,5 +206,6 @@ endif
 ifneq ($(findstring e, $(KBUILD_EXTRA_WARN)),)
 
 KBUILD_CFLAGS += -Werror
+rust_common_flags += -Dwarnings
 
 endif
-- 
2.45.1