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From: Leo Yan <leo.yan@arm.com>
To: "Arnaldo Carvalho de Melo" <acme@kernel.org>,
	"Ian Rogers" <irogers@google.com>,
	"Namhyung Kim" <namhyung@kernel.org>,
	"James Clark" <james.clark@linaro.org>,
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	"Haiyang Zhang" <haiyangz@microsoft.com>,
	"Wei Liu" <wei.liu@kernel.org>,
	"Dexuan Cui" <decui@microsoft.com>,
	"Long Li" <longli@microsoft.com>,
	"Jonathan Cameron" <jic23@kernel.org>,
	"David Lechner" <dlechner@baylibre.com>,
	"Nuno Sá" <nuno.sa@analog.com>,
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	"Willy Tarreau" <w@1wt.eu>,
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	"Josh Poimboeuf" <jpoimboe@kernel.org>,
	"Robert Moore" <robert.moore@intel.com>,
	"Len Brown" <lenb@kernel.org>,
	"Srinivas Pandruvada" <srinivas.pandruvada@linux.intel.com>,
	"Tejun Heo" <tj@kernel.org>, "David Vernet" <void@manifault.com>,
	"Andrea Righi" <arighi@nvidia.com>,
	"Changwoo Min" <changwoo@igalia.com>,
	"Mark Brown" <broonie@kernel.org>,
	"Steven Rostedt" <rostedt@goodmis.org>,
	"Gabriele Monaco" <gmonaco@redhat.com>,
	"Shuah Khan" <shuah@kernel.org>, "Jiri Kosina" <jikos@kernel.org>,
	"Benjamin Tissoires" <bentiss@kernel.org>
Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-perf-users@vger.kernel.org, Leo Yan <leo.yan@arm.com>
Subject: [PATCH v7 05/23] selftests/nolibc: Use a dedicated cross cc-option helper
Date: Tue, 02 Jun 2026 15:40:39 +0100	[thread overview]
Message-ID: <20260602-tools_build_fix_zero_init-v7-5-631baf679fe7@arm.com> (raw)
In-Reply-To: <20260602-tools_build_fix_zero_init-v7-0-631baf679fe7@arm.com>

Makefile.nolibc uses cc-option for architecture-specific flag probes
such as -m32, -mmultiple and -mabi=elfv2. These probes need to include
CLANG_CROSS_FLAGS so that Clang tests the option for the selected target
instead of the host.

The file also includes tools/scripts/Makefile.include. In a sequential
change, Makefile.include will define its own cc-option helper.

Rename the nolibc helper to cross-cc-option and use it for the
architecture-specific probes that require CLANG_CROSS_FLAGS. This keeps
the cross-build checks explicit and avoids clashing with the common
tools cc-option helper.

Signed-off-by: Leo Yan <leo.yan@arm.com>
---
 tools/testing/selftests/nolibc/Makefile.nolibc | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/nolibc/Makefile.nolibc b/tools/testing/selftests/nolibc/Makefile.nolibc
index f30bc68470cceec2b61805af0a4a9f2fb2de7c57..e88b1c15445f3c64dd78cc7edef5c9670a389b50 100644
--- a/tools/testing/selftests/nolibc/Makefile.nolibc
+++ b/tools/testing/selftests/nolibc/Makefile.nolibc
@@ -23,7 +23,7 @@ include $(srctree)/scripts/subarch.include
 ARCH = $(SUBARCH)
 endif
 
-cc-option = $(call __cc-option, $(CC),$(CLANG_CROSS_FLAGS),$(1),$(2))
+cross-cc-option = $(call __cc-option, $(CC),$(CLANG_CROSS_FLAGS),$(1),$(2))
 
 # XARCH extends the kernel's ARCH with a few variants of the same
 # architecture that only differ by the configuration, the toolchain
@@ -211,13 +211,13 @@ else
 Q=@
 endif
 
-CFLAGS_i386 = $(call cc-option,-m32)
+CFLAGS_i386 = $(call cross-cc-option,-m32)
 CFLAGS_x32 = -mx32
 CFLAGS_arm = -marm
 CFLAGS_armthumb = -mthumb -march=armv6t2
-CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
-CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cc-option,-mmultiple)
-CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cc-option,-mabi=elfv2)
+CFLAGS_ppc = -m32 -mbig-endian -mno-vsx $(call cross-cc-option,-mmultiple)
+CFLAGS_ppc64 = -m64 -mbig-endian -mno-vsx $(call cross-cc-option,-mmultiple)
+CFLAGS_ppc64le = -m64 -mlittle-endian -mno-vsx $(call cross-cc-option,-mabi=elfv2)
 CFLAGS_s390x = -m64
 CFLAGS_mips32le = -EL -mabi=32 -fPIC
 CFLAGS_mips32be = -EB -mabi=32
@@ -226,7 +226,7 @@ CFLAGS_mipsn32be = -EB -mabi=n32 -march=mips64r6
 CFLAGS_mips64le = -EL -mabi=64 -march=mips64r6
 CFLAGS_mips64be = -EB -mabi=64 -march=mips64r2
 CFLAGS_loongarch = $(if $(LLVM),-fuse-ld=lld)
-CFLAGS_sparc32 = $(call cc-option,-m32) -mcpu=v8
+CFLAGS_sparc32 = $(call cross-cc-option,-m32) -mcpu=v8
 CFLAGS_sh4 = -ml -m4
 ifeq ($(origin XARCH),command line)
 CFLAGS_XARCH = $(CFLAGS_$(XARCH))

-- 
2.34.1


  parent reply	other threads:[~2026-06-02 14:41 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-02 14:40 [PATCH v7 00/23] tools build: Append -fzero-init-padding-bits=all option Leo Yan
2026-06-02 14:40 ` [PATCH v7 01/23] tools: lib: thermal: Fix typo Leo Yan
2026-06-02 14:40 ` [PATCH v7 02/23] tools/thermal: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 03/23] tools: lib: thermal: Initialize CFLAGS before including Makefile.include Leo Yan
2026-06-02 14:40 ` [PATCH v7 04/23] tools/thermal: " Leo Yan
2026-06-02 14:40 ` Leo Yan [this message]
2026-06-02 14:40 ` [PATCH v7 06/23] tools build: Append -fzero-init-padding-bits=all to extra cflags Leo Yan
2026-06-02 14:40 ` [PATCH v7 07/23] perf build: Append extra host flags Leo Yan
2026-06-02 14:40 ` [PATCH v7 08/23] tools build: Append extra host CFLAGS for fixdep Leo Yan
2026-06-02 14:40 ` [PATCH v7 09/23] tools: bootconfig: Append extra cflags Leo Yan
2026-06-02 14:40 ` [PATCH v7 10/23] tools: counter: " Leo Yan
2026-06-04  2:02   ` William Breathitt Gray
2026-06-02 14:40 ` [PATCH v7 11/23] tools: dma: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 12/23] tools: gpio: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 13/23] tools: hv: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 14/23] tools: iio: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 15/23] tools: mm: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 16/23] tools: objtool: Append extra host cflags Leo Yan
2026-06-02 14:40 ` [PATCH v7 17/23] tools: power: acpi: Append extra cflags Leo Yan
2026-06-02 14:40 ` [PATCH v7 18/23] tools: power: x86/intel-speed-select: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 19/23] tools: sched_ext: " Leo Yan
2026-06-02 21:27   ` Tejun Heo
2026-06-02 14:40 ` [PATCH v7 20/23] tools: spi: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 21/23] tools: tracing: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 22/23] tools: usb: " Leo Yan
2026-06-02 14:40 ` [PATCH v7 23/23] selftests: Include tools Makefile.include Leo Yan

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