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Date: Tue, 19 Oct 2021 15:36:45 -0700 From: Nick Desaulniers <ndesaulniers@...gle.com> To: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org> Cc: llvm@...ts.linux.dev, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Vincenzo Frascino <vincenzo.frascino@....com>, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Lucas Henneman <henneman@...gle.com>, Masahiro Yamada <masahiroy@...nel.org> Subject: [PATCH v2 3/4] arm64: vdso32: suppress error message for 'make mrproper' 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@...gle.com> Suggested-by: Masahiro Yamada <masahiroy@...nel.org> Signed-off-by: Nick Desaulniers <ndesaulniers@...gle.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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