From: Leo Yan <leo.yan@arm.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>,
James Clark <james.clark@linaro.org>
Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
llvm@lists.linux.dev, linux-riscv@lists.infradead.org,
Leo Yan <leo.yan@arm.com>
Subject: [PATCH v2 3/8] perf: build: Correct CROSS_ARCH for clang
Date: Tue, 30 Sep 2025 17:54:51 +0100 [thread overview]
Message-ID: <20250930-perf_build_android_ndk-v2-3-2ea440b7ef01@arm.com> (raw)
In-Reply-To: <20250930-perf_build_android_ndk-v2-0-2ea440b7ef01@arm.com>
Clang's -dumpmachine outputs "aarch64-unknown-linux-gnu", which does not
match the MultiArch convention. This prevents the build system from
detecting installed packages.
Fix by stripping the trailing '-' from CROSS_COMPILE when setting
CROSS_ARCH.
Signed-off-by: Leo Yan <leo.yan@arm.com>
---
tools/build/feature/Makefile | 2 +-
tools/perf/Makefile.perf | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index bd615a708a0aa89ddbe87401f04bd736e384a9c4..214ccaee69181cce1f8e736b85c8dc940efa6c19 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -94,7 +94,7 @@ else
# paths are used instead.
ifdef CROSS_COMPILE
ifeq ($(PKG_CONFIG_LIBDIR)$(PKG_CONFIG_PATH)$(PKG_CONFIG_SYSROOT_DIR),)
- CROSS_ARCH = $(shell $(CC) -dumpmachine)
+ CROSS_ARCH = $(notdir $(CROSS_COMPILE:%-=%))
PKG_CONFIG_LIBDIR := /usr/local/$(CROSS_ARCH)/lib/pkgconfig/
PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/local/lib/$(CROSS_ARCH)/pkgconfig/
PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/lib/$(CROSS_ARCH)/pkgconfig/
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index e2150acc2c13325f93a2d5cd4a60b4a6bfeedc94..47bc9d8a91df90535408c427909bcb3f7cd50970 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -194,7 +194,7 @@ else
# paths are used instead.
ifdef CROSS_COMPILE
ifeq ($(PKG_CONFIG_LIBDIR)$(PKG_CONFIG_PATH)$(PKG_CONFIG_SYSROOT_DIR),)
- CROSS_ARCH = $(shell $(CC) -dumpmachine)
+ CROSS_ARCH = $(notdir $(CROSS_COMPILE:%-=%))
PKG_CONFIG_LIBDIR := /usr/local/$(CROSS_ARCH)/lib/pkgconfig/
PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/local/lib/$(CROSS_ARCH)/pkgconfig/
PKG_CONFIG_LIBDIR := $(PKG_CONFIG_LIBDIR):/usr/lib/$(CROSS_ARCH)/pkgconfig/
--
2.34.1
next prev parent reply other threads:[~2025-09-30 16:55 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-30 16:54 [PATCH v2 0/8] perf build: Support building with Clang Leo Yan
2025-09-30 16:54 ` [PATCH v2 1/8] tools build: Align warning options with perf Leo Yan
2025-09-30 16:54 ` [PATCH v2 2/8] perf python: split Clang options when invoking Popen Leo Yan
2025-09-30 16:54 ` Leo Yan [this message]
2025-09-30 16:54 ` [PATCH v2 4/8] perf test coresight: Dismiss clang warning for memcpy thread Leo Yan
2025-09-30 16:54 ` [PATCH v2 5/8] perf test coresight: Dismiss clang warning for thread loop Leo Yan
2025-09-30 16:54 ` [PATCH v2 6/8] perf test coresight: Dismiss clang warning for unroll loop thread Leo Yan
2025-09-30 16:54 ` [PATCH v2 7/8] perf build: Support build with clang Leo Yan
2025-09-30 16:54 ` [PATCH v2 8/8] perf docs: Document building with Clang Leo Yan
2025-09-30 18:14 ` [PATCH v2 0/8] perf build: Support " Ian Rogers
2025-10-01 13:45 ` Arnaldo Carvalho de Melo
2025-10-01 14:21 ` Arnaldo Carvalho de Melo
2025-10-01 15:22 ` Leo Yan
2025-10-01 18:25 ` Arnaldo Carvalho de Melo
2025-10-01 18:32 ` Leo Yan
2025-10-01 20:20 ` Leo Yan
2025-10-02 17:43 ` Arnaldo Carvalho de Melo
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