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Wed, 04 Feb 2026 20:18:19 -0800 (PST) From: HeeSu Kim To: nathan@kernel.org Cc: a.hindborg@kernel.org, aliceryhl@google.com, bjorn3_gh@protonmail.com, boqun@google.com, charmitro@posteo.net, dakr@kernel.org, gary@garyguo.net, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, lossin@kernel.org, miguel.ojeda.sandonis@gmail.com, nsc@kernel.org, ojeda@kernel.org, rust-for-linux@vger.kernel.org, stable@vger.kernel.org, tmgross@umich.edu, HeeSu Kim Subject: [PATCH v5 1/2] kbuild: add rustc-max-version macro Date: Thu, 5 Feb 2026 22:18:14 +0900 Message-ID: <20260205131815.2943152-1-mlksvender@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260203221224.GA2703490@ax162> References: <20260203221224.GA2703490@ax162> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add `rustc-max-version` macro to `scripts/Makefile.compiler` for version upper bound checks, mirroring the existing `rustc-min-version`. This will be used to bound workarounds to specific compiler version ranges. Suggested-by: Miguel Ojeda Link: https://lore.kernel.org/rust-for-linux/CANiq72n39eU9WE=Yh0_yJzmqMxo=QAaU2pN0UqP9jZ7bT7rhgA@mail.gmail.com/ Acked-by: Nathan Chancellor Signed-off-by: HeeSu Kim --- Changes in v5: - Split rustc-max-version macro into separate patch for easier backporting (was part of the workaround patch in v4) scripts/Makefile.compiler | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler index ef91910de265..85268f6f1494 100644 --- a/scripts/Makefile.compiler +++ b/scripts/Makefile.compiler @@ -71,6 +71,10 @@ clang-min-version = $(call test-ge, $(CONFIG_CLANG_VERSION), $1) # Usage: rustc-$(call rustc-min-version, 108500) += -Cfoo rustc-min-version = $(call test-ge, $(CONFIG_RUSTC_VERSION), $1) +# rustc-max-version +# Usage: rustc-$(call rustc-max-version, 109000) += -Cfoo +rustc-max-version = $(call test-le, $(CONFIG_RUSTC_VERSION), $1) + # ld-option # Usage: KBUILD_LDFLAGS += $(call ld-option, -X, -Y) ld-option = $(call try-run, $(LD) $(KBUILD_LDFLAGS) $(1) -v,$(1),$(2),$(3)) -- 2.52.0