linux-kernel - [PATCH] kbuild: refactor cc-option-yn, cc-disable-warning, rust-option-yn macros

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Message-ID: <20241009102821.2675718-1-masahiroy@kernel.org>
Date: Wed,  9 Oct 2024 19:27:37 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: Miguel Ojeda <ojeda@...nel.org>,
	Matthew Maurer <mmaurer@...gle.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	rust-for-linux@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Benno Lossin <benno.lossin@...ton.me>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>,
	Trevor Gross <tmgross@...ch.edu>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] kbuild: refactor cc-option-yn, cc-disable-warning, rust-option-yn macros

cc-option-yn and cc-disable-warning duplicate the compile command seen
a few lines above. These can be defined based on cc-option.

I also refactored rustc-option-yn in the same way, although there are
currently no users of it.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

This avoids applying similar fixes to rustc-option and rustc-option-yn.

 scripts/Makefile.compiler | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler
index 057305eae85c..73d611d383b2 100644
--- a/scripts/Makefile.compiler
+++ b/scripts/Makefile.compiler
@@ -53,13 +53,11 @@ cc-option = $(call __cc-option, $(CC),\
 
 # cc-option-yn
 # Usage: flag := $(call cc-option-yn,-march=winchip-c6)
-cc-option-yn = $(call try-run,\
-	$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
+cc-option-yn = $(if $(call cc-option,$1),y,n)
 
 # cc-disable-warning
 # Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
-cc-disable-warning = $(call try-run,\
-	$(CC) -Werror $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
+cc-disable-warning = $(if $(call cc-option,-W$(strip $1)),-Wno-$(strip $1))
 
 # gcc-min-version
 # Usage: cflags-$(call gcc-min-version, 70100) += -foo
@@ -85,5 +83,4 @@ rustc-option = $(call __rustc-option, $(RUSTC),\
 
 # rustc-option-yn
 # Usage: flag := $(call rustc-option-yn,-Cinstrument-coverage)
-rustc-option-yn = $(call try-run,\
-	$(RUSTC) $(KBUILD_RUSTFLAGS) $(1) --crate-type=rlib /dev/null --out-dir=$$TMPOUT -o "$$TMP",y,n)
+rustc-option-yn = $(if $(call rustc-option,$1),y,n)
-- 
2.43.0