From: Nick Desaulniers <ndesaulniers@google.com>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: llvm@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Lucas Henneman <henneman@google.com>,
Masahiro Yamada <masahiroy@kernel.org>
Subject: [PATCH v2 3/4] arm64: vdso32: suppress error message for 'make mrproper'
Date: Tue, 19 Oct 2021 15:36:45 -0700 [thread overview]
Message-ID: <20211019223646.1146945-4-ndesaulniers@google.com> (raw)
In-Reply-To: <20211019223646.1146945-1-ndesaulniers@google.com>
When running the following command without arm-linux-gnueabi-gcc in
one's $PATH, the following warning is observed:
$ ARCH=arm64 CROSS_COMPILE_COMPAT=arm-linux-gnueabi- make -j72 LLVM=1 mrproper
make[1]: arm-linux-gnueabi-gcc: No such file or directory
This is because KCONFIG is not run for mrproper, so CONFIG_CC_IS_CLANG
is not set, and we end up eagerly evaluating various variables that try
to invoke CC_COMPAT.
This is a similar problem to what was observed in
commit dc960bfeedb0 ("h8300: suppress error messages for 'make clean'")
Reported-by: Lucas Henneman <henneman@google.com>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
Changes v1 -> v2:
* Change to suppressing via redirecting stderr to /dev/null, as per
Masahiro.
* Add Masahiro's SB tag.
* Cite dc960bfeedb0.
arch/arm64/kernel/vdso32/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 1407516e041e..e478cebb9891 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -38,7 +38,8 @@ cc32-disable-warning = $(call try-run,\
# As a result we set our own flags here.
# KBUILD_CPPFLAGS and NOSTDINC_FLAGS from top-level Makefile
-VDSO_CPPFLAGS := -DBUILD_VDSO -D__KERNEL__ -nostdinc -isystem $(shell $(CC_COMPAT) -print-file-name=include)
+VDSO_CPPFLAGS := -DBUILD_VDSO -D__KERNEL__ -nostdinc
+VDSO_CPPFLAGS += -isystem $(shell $(CC_COMPAT) -print-file-name=include 2>/dev/null)
VDSO_CPPFLAGS += $(LINUXINCLUDE)
# Common C and assembly flags
--
2.33.0.1079.g6e70778dc9-goog
WARNING: multiple messages have this Message-ID (diff)
From: Nick Desaulniers <ndesaulniers@google.com>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: llvm@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Lucas Henneman <henneman@google.com>,
Masahiro Yamada <masahiroy@kernel.org>
Subject: [PATCH v2 3/4] arm64: vdso32: suppress error message for 'make mrproper'
Date: Tue, 19 Oct 2021 15:36:45 -0700 [thread overview]
Message-ID: <20211019223646.1146945-4-ndesaulniers@google.com> (raw)
In-Reply-To: <20211019223646.1146945-1-ndesaulniers@google.com>
When running the following command without arm-linux-gnueabi-gcc in
one's $PATH, the following warning is observed:
$ ARCH=arm64 CROSS_COMPILE_COMPAT=arm-linux-gnueabi- make -j72 LLVM=1 mrproper
make[1]: arm-linux-gnueabi-gcc: No such file or directory
This is because KCONFIG is not run for mrproper, so CONFIG_CC_IS_CLANG
is not set, and we end up eagerly evaluating various variables that try
to invoke CC_COMPAT.
This is a similar problem to what was observed in
commit dc960bfeedb0 ("h8300: suppress error messages for 'make clean'")
Reported-by: Lucas Henneman <henneman@google.com>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
Changes v1 -> v2:
* Change to suppressing via redirecting stderr to /dev/null, as per
Masahiro.
* Add Masahiro's SB tag.
* Cite dc960bfeedb0.
arch/arm64/kernel/vdso32/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 1407516e041e..e478cebb9891 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -38,7 +38,8 @@ cc32-disable-warning = $(call try-run,\
# As a result we set our own flags here.
# KBUILD_CPPFLAGS and NOSTDINC_FLAGS from top-level Makefile
-VDSO_CPPFLAGS := -DBUILD_VDSO -D__KERNEL__ -nostdinc -isystem $(shell $(CC_COMPAT) -print-file-name=include)
+VDSO_CPPFLAGS := -DBUILD_VDSO -D__KERNEL__ -nostdinc
+VDSO_CPPFLAGS += -isystem $(shell $(CC_COMPAT) -print-file-name=include 2>/dev/null)
VDSO_CPPFLAGS += $(LINUXINCLUDE)
# Common C and assembly flags
--
2.33.0.1079.g6e70778dc9-goog
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next prev parent reply other threads:[~2021-10-19 22:36 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-19 22:36 [PATCH v2 0/4] compat vdso cleanups Nick Desaulniers
2021-10-19 22:36 ` Nick Desaulniers
2021-10-19 22:36 ` [PATCH v2 1/4] arm64: vdso32: drop the test for dmb ishld Nick Desaulniers
2021-10-19 22:36 ` Nick Desaulniers
2021-10-20 0:42 ` Nathan Chancellor
2021-10-20 0:42 ` Nathan Chancellor
2021-10-20 7:51 ` Vincenzo Frascino
2021-10-20 7:51 ` Vincenzo Frascino
2021-10-19 22:36 ` [PATCH v2 2/4] arm64: vdso32: drop test for -march=armv8-a Nick Desaulniers
2021-10-19 22:36 ` Nick Desaulniers
2021-10-20 0:43 ` Nathan Chancellor
2021-10-20 0:43 ` Nathan Chancellor
2021-10-20 7:52 ` Vincenzo Frascino
2021-10-20 7:52 ` Vincenzo Frascino
2021-10-19 22:36 ` Nick Desaulniers [this message]
2021-10-19 22:36 ` [PATCH v2 3/4] arm64: vdso32: suppress error message for 'make mrproper' Nick Desaulniers
2021-10-20 0:50 ` Nathan Chancellor
2021-10-20 0:50 ` Nathan Chancellor
2021-10-20 7:54 ` Vincenzo Frascino
2021-10-20 7:54 ` Vincenzo Frascino
2021-10-19 22:36 ` [PATCH v2 4/4] arm64: vdso32: require CROSS_COMPILE_COMPAT for gcc+bfd Nick Desaulniers
2021-10-19 22:36 ` Nick Desaulniers
2021-10-20 9:08 ` Vincenzo Frascino
2021-10-20 9:08 ` Vincenzo Frascino
2021-10-21 10:05 ` [PATCH v2 0/4] compat vdso cleanups Will Deacon
2021-10-21 10:05 ` Will Deacon
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